{"id":41251,"date":"2025-06-20T11:26:52","date_gmt":"2025-06-20T03:26:52","guid":{"rendered":"https:\/\/zetarmold.com\/?p=41251"},"modified":"2026-04-09T08:10:29","modified_gmt":"2026-04-09T00:10:29","slug":"moldagem-por-injecao-glossario-basico","status":"publish","type":"post","link":"https:\/\/zetarmold.com\/pt\/moldagem-por-injecao-glossario-basico\/","title":{"rendered":"Gloss\u00e1rio e no\u00e7\u00f5es b\u00e1sicas de moldagem por inje\u00e7\u00e3o"},"content":{"rendered":"<figure class=\"wp-block-embed is-type-rich is-provider-spotify wp-block-embed-spotify wp-embed-aspect-21-9 wp-has-aspect-ratio\">\n<div class=\"wp-block-embed__wrapper\">\n<iframe title=\"Spotify Embed: <a href=\"https:>Molde de inje\u00e7\u00e3o<\/a>ing Glossary &amp; Basics&#8221; style=&#8221;border-radius: 12px&#8221; width=&#8221;100%&#8221; height=&#8221;152&#8243; frameborder=&#8221;0&#8243; allowfullscreen allow=&#8221;autoplay; clipboard-write; encrypted-media; fullscreen; picture-in-picture&#8221; loading=&#8221;lazy&#8221; src=&#8221;https:\/\/open.spotify.com\/embed\/episode\/1CMeeNSCg0rGXCvSnkrUWu?si=UHbn-LZ1RfeqbnUJMJ2REg&#038;utm_source=oembed&#8221;><\/iframe>\n<\/div>\n<\/figure>\n<p><strong>Introduction: plastic injection molding is a process where plastic particles are heated until they melt and then injected into a mold cavity at high pressure and speed to make a product with the right structure, look, and size.<\/strong><\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-902 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"386\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/\u8bbe\u8ba11.jpg\" alt=\"\" class=\"wp-image-41263\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/\u8bbe\u8ba11.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/\u8bbe\u8ba11-300x193.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p><strong>Quando se est\u00e1 a moldar, \u00e9 preciso pensar em muitas coisas para garantir que o produto \u00e9 bom (por exemplo, o aspeto, o tamanho, a resist\u00eancia, etc.) e que se pode fabric\u00e1-lo rapidamente (por exemplo, quanto tempo demora a fabric\u00e1-lo). Este artigo vai falar sobre as palavras e as coisas que precisa de saber para fazer moldagem por inje\u00e7\u00e3o.<\/strong><\/p>\n<h2 class=\"wp-block-heading\">Par\u00e2metros de moldagem por inje\u00e7\u00e3o<\/h2>\n<p><strong>Defini\u00e7\u00e3o: <\/strong>A qualidade de moldagem do produto \u00e9 afetada por cinco factores: temperatura, velocidade, press\u00e3o, posi\u00e7\u00e3o e tempo. As defini\u00e7\u00f5es destes cinco factores s\u00e3o os par\u00e2metros de moldagem.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-903 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"397\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/\u8131\u819c.jpg\" alt=\"\" class=\"wp-image-41261\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/\u8131\u819c.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/\u8131\u819c-300x199.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<h3 class=\"wp-block-heading\">Temperatura <\/h3>\n<h4 class=\"wp-block-heading\">Temperatura de secagem<\/h4>\n<p><strong>Defini\u00e7\u00e3o: <\/strong>A temperatura necess\u00e1ria para secar o pl\u00e1stico antes de o transformar em algo bom.<\/p>\n<p><strong>Fun\u00e7\u00e3o:<\/strong> Certifique-se de que o pl\u00e1stico est\u00e1 o mais seco poss\u00edvel, sem ficar demasiado seco.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-904 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"336\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.run2E3T7eNUZLY_Injection_molding_of_medic_8d0af55f-f58a-4e16-a4c5-9824ed949f1d_1.jpg\" alt=\"\" class=\"wp-image-41264\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.run2E3T7eNUZLY_Injection_molding_of_medic_8d0af55f-f58a-4e16-a4c5-9824ed949f1d_1.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.run2E3T7eNUZLY_Injection_molding_of_medic_8d0af55f-f58a-4e16-a4c5-9824ed949f1d_1-300x168.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p><strong>Princ\u00edpio:<\/strong> N\u00e3o a queime nem a fa\u00e7a colar (derreter), fa\u00e7a-o o mais depressa poss\u00edvel, fa\u00e7a-o o mais fresco poss\u00edvel sem que deixe de funcionar, coisas diferentes requerem tempos e temperaturas diferentes, use o que as pessoas que as fizeram dizem.<\/p>\n<h4 class=\"wp-block-heading\">Temperatura do material<\/h4>\n<p><strong>Defini\u00e7\u00e3o:<\/strong> A temperatura que define no tubo de material para garantir que a moldagem \u00e9 suave.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-905 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"336\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.rundOI1FsKl6A0_Injection_molding_of_vario_9bca3f9c-0ec7-49e1-9ade-80fb70c64685_0.jpg\" alt=\"\" class=\"wp-image-41266\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.rundOI1FsKl6A0_Injection_molding_of_vario_9bca3f9c-0ec7-49e1-9ade-80fb70c64685_0.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.rundOI1FsKl6A0_Injection_molding_of_vario_9bca3f9c-0ec7-49e1-9ade-80fb70c64685_0-300x168.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p><strong>Fun\u00e7\u00e3o:<\/strong> Aque\u00e7a a c\u00e2mara de material da m\u00e1quina de moldagem com o anel de aquecimento el\u00e9trico para fazer com que a mat\u00e9ria-prima passe de granular a fundida, certifique-se de que o pol\u00edmero \u00e9 bem derretido (cola derretida), certifique-se de que o molde \u00e9 preenchido e que a moldagem \u00e9 suave.<\/p>\n<p><strong>Princ\u00edpio:<\/strong> N\u00e3o fa\u00e7a com que o pl\u00e1stico se decomponha e carbonize, suba da sec\u00e7\u00e3o de alimenta\u00e7\u00e3o para o bocal, a temperatura do bocal deve ser um pouco mais baixa do que a temperatura da sec\u00e7\u00e3o frontal do barril para parar a baba, e a temperatura necess\u00e1ria depende do material que est\u00e1 a utilizar.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-906 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"452\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.rungIvheBqLGlU_plastic_injection_molding__8ab41f06-e40f-4fd1-ae29-1bf4c7863d15_1.jpg\" alt=\"\" class=\"wp-image-41267\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.rungIvheBqLGlU_plastic_injection_molding__8ab41f06-e40f-4fd1-ae29-1bf4c7863d15_1.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.rungIvheBqLGlU_plastic_injection_molding__8ab41f06-e40f-4fd1-ae29-1bf4c7863d15_1-300x226.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<h4 class=\"wp-block-heading\">Temperatura do molde<\/h4>\n<p><strong>Defini\u00e7\u00e3o: <\/strong>A temperatura da superf\u00edcie do molde em que o produto toca<\/p>\n<p><strong>Fun\u00e7\u00e3o:<\/strong> Controlar a rapidez com que o produto arrefece no molde e o aspeto do produto.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-907 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"400\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/08\/13-3.jpeg\" alt=\"\" class=\"wp-image-41073\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/08\/13-3.jpeg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/08\/13-3-300x200.jpeg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p><strong>Princ\u00edpio:<\/strong> Pense no tipo de pl\u00e1stico que est\u00e1 a utilizar, no tamanho e na forma do produto e na forma como o molde \u00e9 feito. Pense tamb\u00e9m na forma como o pl\u00e1stico entra no molde.<\/p>\n<h3 class=\"wp-block-heading\">Velocidade<\/h3>\n<h4 class=\"wp-block-heading\">Velocidade de inje\u00e7\u00e3o<\/h4>\n<p><strong>Defini\u00e7\u00e3o:<\/strong> A velocidade a que o pl\u00e1stico fundido \u00e9 injetado do bocal para a cavidade do molde a uma determinada press\u00e3o.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-908 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"338\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/12.jpeg\" alt=\"\" class=\"wp-image-41254\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/12.jpeg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/12-300x169.jpeg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p><strong>Fun\u00e7\u00e3o:<\/strong> O aumento da velocidade de inje\u00e7\u00e3o aumenta a press\u00e3o de enchimento. O aumento da velocidade de inje\u00e7\u00e3o pode aumentar o comprimento do fluxo. Isto torna a qualidade do produto uniforme. A viscosidade elevada e o caudal r\u00e1pido na inje\u00e7\u00e3o a alta velocidade s\u00e3o adequados para produtos de processo longo. Fluxo suave a baixa velocidade e tamanho est\u00e1vel do produto.<\/p>\n<p><strong>Princ\u00edpio:<\/strong> Para evitar o apoio do molde e o transbordo, para evitar queimaduras devido \u00e0 velocidade excessiva e para garantir a qualidade do produto, tente escolher o enchimento a alta velocidade para encurtar o ciclo de moldagem.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-909 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"311\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/17.jpeg\" alt=\"\" class=\"wp-image-41255\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/17.jpeg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/17-300x156.jpeg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<h4 class=\"wp-block-heading\">Velocidade de fus\u00e3o<\/h4>\n<p><strong>Defini\u00e7\u00e3o: <\/strong>A velocidade a que o parafuso se desloca quando est\u00e1 a derreter o pl\u00e1stico.<\/p>\n<p><strong>Fun\u00e7\u00e3o:<\/strong> Um par\u00e2metro muito importante que afecta a capacidade de plastifica\u00e7\u00e3o, a qualidade da plastifica\u00e7\u00e3o e o ciclo de moldagem. Quanto maior for a velocidade, maior ser\u00e1 a temperatura de fus\u00e3o e maior ser\u00e1 a capacidade de plastifica\u00e7\u00e3o.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-910 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"300\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/7.jpeg\" alt=\"\" class=\"wp-image-41256\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/7.jpeg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/7-300x150.jpeg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p><strong>Princ\u00edpio:<\/strong>Quando se aumenta a velocidade do parafuso, a qualidade da plastifica\u00e7\u00e3o diminui.<\/p>\n<h4 class=\"wp-block-heading\">Velocidade de retra\u00e7\u00e3o<\/h4>\n<p><strong>Defini\u00e7\u00e3o: <\/strong>Depois de o parafuso (doseador) estar no lugar, recuar\u00e1 uma certa dist\u00e2ncia a uma determinada velocidade. A velocidade de recuo \u00e9 a velocidade de retra\u00e7\u00e3o.<\/p>\n<p><strong>Fun\u00e7\u00e3o:<\/strong> Reduzir o volume espec\u00edfico da massa fundida, reduzir a press\u00e3o na cavidade da massa fundida e impedir o seu escoamento.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-911 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"336\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runGJgb0J_1O30_Injection_molding_chairs_o_29135d9d-3651-46ed-9936-e7b15f9534b3_0-1.jpg\" alt=\"\" class=\"wp-image-41268\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runGJgb0J_1O30_Injection_molding_chairs_o_29135d9d-3651-46ed-9936-e7b15f9534b3_0-1.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runGJgb0J_1O30_Injection_molding_chairs_o_29135d9d-3651-46ed-9936-e7b15f9534b3_0-1-300x168.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p><strong>Princ\u00edpio:<\/strong>A regula\u00e7\u00e3o deve ser adaptada \u00e0 velocidade do parafuso e \u00e0 contrapress\u00e3o.<\/p>\n<h4 class=\"wp-block-heading\">Velocidade de abertura e fecho do molde<\/h4>\n<p><strong>Defini\u00e7\u00e3o: <\/strong>A velocidade a que o molde \u00e9 aberto e fechado.<\/p>\n<p><strong>Fun\u00e7\u00e3o:<\/strong> Uma velocidade razo\u00e1vel de abertura e fecho do molde \u00e9 essencial para garantir que a m\u00e1quina e a produ\u00e7\u00e3o funcionam sem problemas.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-912 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"373\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/\u5f00\u6a21.jpg\" alt=\"\" class=\"wp-image-41257\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/\u5f00\u6a21.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/\u5f00\u6a21-300x187.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p><strong>Princ\u00edpio:<\/strong>Para que a m\u00e1quina funcione sem problemas e com menos vibra\u00e7\u00f5es, a velocidade de abertura e fecho do molde deve ser definida para que o tempo de abertura e fecho do molde seja o mais curto poss\u00edvel, e a mudan\u00e7a de velocidade de abertura e fecho do molde deve ser razo\u00e1vel, seguindo o princ\u00edpio de lento-r\u00e1pido-lento.<\/p>\n<h4 class=\"wp-block-heading\">Velocidade do ejetor para a frente e para tr\u00e1s<\/h4>\n<p><strong>Defini\u00e7\u00e3o:<\/strong> A velocidade a que o pino ejetor se move para a frente e retrai ap\u00f3s a abertura do molde.<\/p>\n<p><strong>Fun\u00e7\u00e3o:<\/strong> Para garantir que a pe\u00e7a sai do molde sem ficar dobrada, deformada ou rachada.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-913 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"309\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/2.jpeg\" alt=\"\" class=\"wp-image-41258\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/2.jpeg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/2-300x155.jpeg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p><strong>Princ\u00edpio:<\/strong>A parte da frente deve mover-se lentamente para evitar dobrar ou rachar a pe\u00e7a, e a parte de tr\u00e1s deve mover-se rapidamente, mas tem de ser suave.<\/p>\n<h3 class=\"wp-block-heading\">Press\u00e3o <\/h3>\n<h4 class=\"wp-block-heading\">Um disparo Press\u00e3o<\/h4>\n<p><strong>Defini\u00e7\u00e3o: <\/strong>O parafuso empurra a mat\u00e9ria-prima da tremonha para o molde.&nbsp;<\/p>\n<p><strong>Fun\u00e7\u00e3o: <\/strong>Para garantir que o molde \u00e9 preenchido e que a pe\u00e7a sai corretamente.&nbsp;<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-914 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"336\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runGXZ4xOOmo-k_plastic_injection_molding__b9c89543-9219-4928-9205-13cc1e200da8_1.jpg\" alt=\"\" class=\"wp-image-41269\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runGXZ4xOOmo-k_plastic_injection_molding__b9c89543-9219-4928-9205-13cc1e200da8_1.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runGXZ4xOOmo-k_plastic_injection_molding__b9c89543-9219-4928-9205-13cc1e200da8_1-300x168.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p><strong>Princ\u00edpio:<\/strong>Tem de estar dentro do limite de press\u00e3o da m\u00e1quina, a curva de inje\u00e7\u00e3o tem de estar dentro do intervalo e a linha de press\u00e3o tem de ser suave e est\u00e1vel para que n\u00e3o haja flashes ou disparos curtos.<\/p>\n<h4 class=\"wp-block-heading\">Press\u00e3o de inje\u00e7\u00e3o secund\u00e1ria (press\u00e3o de manuten\u00e7\u00e3o)<\/h4>\n<p><strong>Defini\u00e7\u00e3o:<\/strong> Desde o momento em que a cavidade do molde \u00e9 preenchida com pl\u00e1stico at\u00e9 ao momento em que a porta \u00e9 completamente arrefecida e fechada, \u00e9 necess\u00e1ria uma press\u00e3o relativamente elevada para manter o tempo. Esta press\u00e3o \u00e9 designada por press\u00e3o de reten\u00e7\u00e3o.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-915 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"336\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runh2w0nm-V07s_Injection_molding_of_elect_5d4b99e7-e7a3-480e-8056-93b9dc5d2b4c_2.jpg\" alt=\"\" class=\"wp-image-41270\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runh2w0nm-V07s_Injection_molding_of_elect_5d4b99e7-e7a3-480e-8056-93b9dc5d2b4c_2.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runh2w0nm-V07s_Injection_molding_of_elect_5d4b99e7-e7a3-480e-8056-93b9dc5d2b4c_2-300x168.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p><strong>Fun\u00e7\u00e3o:<\/strong> Adicione mais material perto da localiza\u00e7\u00e3o da porta e evite que o pl\u00e1stico n\u00e3o endurecido na cavidade do molde flua de volta sob a press\u00e3o restante antes que a porta arrefe\u00e7a e feche.<\/p>\n<p>Isto evitar\u00e1 o encolhimento da pe\u00e7a, eliminar\u00e1 as marcas de afundamento, reduzir\u00e1 as armadilhas de ar e evitar\u00e1 que as pe\u00e7as se colem ao molde ou se dobrem ou partam devido a uma press\u00e3o de inje\u00e7\u00e3o excessiva.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-916 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"336\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runF0znDyT992E_Injection_molding_of_vario_f4506c61-f6b1-4c90-9efb-8fd9ee770056_0.jpg\" alt=\"\" class=\"wp-image-41271\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runF0znDyT992E_Injection_molding_of_vario_f4506c61-f6b1-4c90-9efb-8fd9ee770056_0.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runF0znDyT992E_Injection_molding_of_vario_f4506c61-f6b1-4c90-9efb-8fd9ee770056_0-300x168.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p><strong>Princ\u00edpio:<\/strong> A press\u00e3o e a velocidade de reten\u00e7\u00e3o s\u00e3o normalmente definidas para 50~60% da press\u00e3o e velocidade m\u00e1ximas quando o pl\u00e1stico preenche a cavidade do molde. A dura\u00e7\u00e3o do tempo de reten\u00e7\u00e3o est\u00e1 relacionada com a temperatura do material.<\/p>\n<p>O port\u00e3o de alta temperatura tem um tempo de fecho mais longo e um tempo de reten\u00e7\u00e3o mais longo. A press\u00e3o de reten\u00e7\u00e3o est\u00e1 relacionada com a \u00e1rea projectada e a espessura da parede do produto. Os produtos espessos e de grandes dimens\u00f5es requerem um tempo mais longo. A press\u00e3o de reten\u00e7\u00e3o est\u00e1 relacionada com o tamanho, a forma e a dimens\u00e3o do port\u00e3o.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-917 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"336\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runi71Zm84u5Iw_Flash_of_various_products__a049b89a-0f2b-45c6-b2b0-11b248967c31_2.jpg\" alt=\"\" class=\"wp-image-41272\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runi71Zm84u5Iw_Flash_of_various_products__a049b89a-0f2b-45c6-b2b0-11b248967c31_2.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runi71Zm84u5Iw_Flash_of_various_products__a049b89a-0f2b-45c6-b2b0-11b248967c31_2-300x168.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<h4 class=\"wp-block-heading\">Press\u00e3o da resina (contrapress\u00e3o)<\/h4>\n<p><strong>Defini\u00e7\u00e3o:<\/strong> A press\u00e3o que \u00e9 criada na cavidade de fus\u00e3o durante o processo de plastifica\u00e7\u00e3o do pl\u00e1stico.<\/p>\n<p><strong>Fun\u00e7\u00e3o:<\/strong> Para aumentar a gravidade espec\u00edfica da massa fundida, assegurar uma plastifica\u00e7\u00e3o uniforme da massa fundida, reduzir o teor de g\u00e1s na massa fundida e melhorar a qualidade da plastifica\u00e7\u00e3o.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-918 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"336\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runIHncgNE1e50_plastic_product_injection__2f98226e-dd9c-474a-82c4-b8ebdd82ede3_1.jpg\" alt=\"\" class=\"wp-image-41273\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runIHncgNE1e50_plastic_product_injection__2f98226e-dd9c-474a-82c4-b8ebdd82ede3_1.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runIHncgNE1e50_plastic_product_injection__2f98226e-dd9c-474a-82c4-b8ebdd82ede3_1-300x168.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p><strong>Princ\u00edpio:<\/strong> Ao ajustar a press\u00e3o da resina, deve ter em conta as propriedades do material pl\u00e1stico. Deve tamb\u00e9m ter em conta o aspeto e as dimens\u00f5es do produto.<\/p>\n<h4 class=\"wp-block-heading\">Press\u00e3o de aperto<\/h4>\n<p><strong>Defini\u00e7\u00e3o: <\/strong>O sistema de fixa\u00e7\u00e3o \u00e9 o que fecha o molde para evitar que este se abra quando o pl\u00e1stico est\u00e1 a ser injetado e embalado.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-919 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"336\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runH2dtixI45_M_Injection_molding_of_vario_2dabdb75-f8f9-4d83-8705-2a5addb7230f_1.jpg\" alt=\"\" class=\"wp-image-41274\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runH2dtixI45_M_Injection_molding_of_vario_2dabdb75-f8f9-4d83-8705-2a5addb7230f_1.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runH2dtixI45_M_Injection_molding_of_vario_2dabdb75-f8f9-4d83-8705-2a5addb7230f_1-300x168.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p><strong>Fun\u00e7\u00e3o: <\/strong>Para evitar que o molde se abra quando o pl\u00e1stico est\u00e1 a ser injetado e embalado, para que a pe\u00e7a tenha bom aspeto e para que a pe\u00e7a tenha o tamanho certo.<\/p>\n<p><strong>Princ\u00edpio:<\/strong> O tamanho da tonelagem da pin\u00e7a depende do tamanho da pe\u00e7a e do tamanho da m\u00e1quina.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-920 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"336\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runk5Wo3vf8AS0_Injection_molding_of_vario_5b7b679b-dce8-44a8-8005-6c359163d791_2.jpg\" alt=\"\" class=\"wp-image-41275\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runk5Wo3vf8AS0_Injection_molding_of_vario_5b7b679b-dce8-44a8-8005-6c359163d791_2.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runk5Wo3vf8AS0_Injection_molding_of_vario_5b7b679b-dce8-44a8-8005-6c359163d791_2-300x168.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p>Em geral, quanto menor for a tonelagem da pin\u00e7a, melhor. A tonelagem da pin\u00e7a n\u00e3o deve ser superior \u00e0 press\u00e3o nominal da m\u00e1quina, mas deve ser suficientemente elevada para que a pe\u00e7a n\u00e3o fique com folga.<\/p>\n<h4 class=\"wp-block-heading\">Prote\u00e7\u00e3o contra o bolor Press\u00e3o<\/h4>\n<p><strong>Defini\u00e7\u00e3o:&nbsp;<\/strong>Quando fabricamos moldes, normalmente utilizamos alta press\u00e3o e alta velocidade para baixa press\u00e3o e baixa velocidade antes de utilizarmos alta press\u00e3o para fixar o molde. A baixa press\u00e3o antes da fixa\u00e7\u00e3o a alta press\u00e3o \u00e9 designada por press\u00e3o de prote\u00e7\u00e3o do molde.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-921 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"336\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runmuGfiNNZig0_Injection_molding_of_mobil_131781b8-cfa3-4883-8040-cb70c9b02e94_3.jpg\" alt=\"\" class=\"wp-image-41277\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runmuGfiNNZig0_Injection_molding_of_mobil_131781b8-cfa3-4883-8040-cb70c9b02e94_3.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runmuGfiNNZig0_Injection_molding_of_mobil_131781b8-cfa3-4883-8040-cb70c9b02e94_3-300x168.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p><strong>Fun\u00e7\u00e3o:&nbsp;<\/strong>Para evitar que o molde seja esmagado por objectos estranhos no molde quando se utiliza alta press\u00e3o e alta velocidade.<\/p>\n<p><strong>Princ\u00edpio:<\/strong> Antes de definir e depurar, devemos primeiro ajustar a espessura do molde, e o valor de configura\u00e7\u00e3o inicial deve ser o mais baixo poss\u00edvel e n\u00e3o deve exceder 20% da for\u00e7a de fixa\u00e7\u00e3o. Quando o molde n\u00e3o pode ser corrigido, o valor de ajuste deve ser aumentado lentamente.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-922 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"336\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runrpXqUbgNogE_Injection_molding_of_vario_3e937500-1b04-4b4d-a04f-c6cb49352eb5_1.jpg\" alt=\"\" class=\"wp-image-41278\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runrpXqUbgNogE_Injection_molding_of_vario_3e937500-1b04-4b4d-a04f-c6cb49352eb5_1.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runrpXqUbgNogE_Injection_molding_of_vario_3e937500-1b04-4b4d-a04f-c6cb49352eb5_1-300x168.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<h3 class=\"wp-block-heading\">Posi\u00e7\u00e3o <\/h3>\n<h4 class=\"wp-block-heading\">Posi\u00e7\u00e3o de abertura do molde<\/h4>\n<p><strong>Defini\u00e7\u00e3o:<\/strong> A posi\u00e7\u00e3o do molde macho em rela\u00e7\u00e3o \u00e0 superf\u00edcie do molde f\u00eamea ap\u00f3s a separa\u00e7\u00e3o dos moldes macho e f\u00eamea.<\/p>\n<p><strong>Fun\u00e7\u00e3o:<\/strong>&nbsp;Certifique-se de que consegue retirar facilmente o objeto do molde.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-923 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"421\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/08\/Dingtalk_20240807152344.jpg\" alt=\"\" class=\"wp-image-40625\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/08\/Dingtalk_20240807152344.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/08\/Dingtalk_20240807152344-300x211.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p><strong>Princ\u00edpio:<\/strong> V\u00e1 o mais r\u00e1pido que puder durante o maior tempo poss\u00edvel. A posi\u00e7\u00e3o m\u00e1xima de abertura do molde deve basear-se no princ\u00edpio da facilidade de remo\u00e7\u00e3o (incluindo o robot) e de n\u00e3o danificar a superf\u00edcie do molde f\u00eamea ao retirar. A posi\u00e7\u00e3o m\u00e1xima de abertura do molde deve ser baseada no ciclo de moldagem mais curto.<\/p>\n<h4 class=\"wp-block-heading\">Curso de eje\u00e7\u00e3o e retra\u00e7\u00e3o<\/h4>\n<p><strong>Defini\u00e7\u00e3o:<\/strong> A posi\u00e7\u00e3o extrema do ejetor a ser ejectado e retra\u00eddo.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-924 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"336\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runvpFPwdTSMQU_Injection_molding_of_vario_8785b7ff-dbb4-470e-a8f7-c3e0934ab2a2_0-1.jpg\" alt=\"\" class=\"wp-image-41279\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runvpFPwdTSMQU_Injection_molding_of_vario_8785b7ff-dbb4-470e-a8f7-c3e0934ab2a2_0-1.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runvpFPwdTSMQU_Injection_molding_of_vario_8785b7ff-dbb4-470e-a8f7-c3e0934ab2a2_0-1-300x168.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p><strong>Fun\u00e7\u00e3o:<\/strong> O curso do ejetor \u00e9 utilizado para limitar o movimento para a frente e para tr\u00e1s do ejetor para assegurar uma desmoldagem suave do produto e uma reposi\u00e7\u00e3o precisa do ejetor. Para alguns moldes de reposi\u00e7\u00e3o por mola, o curso do ejetor tamb\u00e9m serve como uma prote\u00e7\u00e3o de limite de eje\u00e7\u00e3o.<\/p>\n<p><strong>Princ\u00edpio: <\/strong>A dist\u00e2ncia de eje\u00e7\u00e3o deve seguir o princ\u00edpio de pequena para grande, e a desmoldagem deve ser suave. Para moldes com mola sem pinos de limite de eje\u00e7\u00e3o, deve garantir-se que a mola n\u00e3o \u00e9 esmagada durante a eje\u00e7\u00e3o.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-925 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"336\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runTRZgJqXMo58_Injection_molding_of_house_28dd5918-4bf4-4cc1-ae15-daee85cef502_0.jpg\" alt=\"\" class=\"wp-image-41280\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runTRZgJqXMo58_Injection_molding_of_house_28dd5918-4bf4-4cc1-ae15-daee85cef502_0.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runTRZgJqXMo58_Injection_molding_of_house_28dd5918-4bf4-4cc1-ae15-daee85cef502_0-300x168.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p>O pino ejetor n\u00e3o deve estar mais alto do que a superf\u00edcie do molde macho quando est\u00e1 retra\u00eddo. O pino ejetor do molde com uma corredi\u00e7a deve ser retra\u00eddo para evitar interfer\u00eancia m\u00fatua.<\/p>\n<h4 class=\"wp-block-heading\">Curso de medi\u00e7\u00e3o<\/h4>\n<p><strong>Defini\u00e7\u00e3o:<\/strong> Ap\u00f3s o in\u00edcio da plastifica\u00e7\u00e3o, o parafuso come\u00e7a a recuar a partir da posi\u00e7\u00e3o final de inje\u00e7\u00e3o sob a for\u00e7a do pl\u00e1stico fundido at\u00e9 atingir o interrutor de limite para recuar durante o processo de rota\u00e7\u00e3o. Este processo \u00e9 designado por curso de dosagem.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-926 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"336\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runrivYKCu_IUI_Injection_molding_of_vario_75f8df7f-4a4e-4276-8a68-e2e4023c4c02_3.jpg\" alt=\"\" class=\"wp-image-41281\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runrivYKCu_IUI_Injection_molding_of_vario_75f8df7f-4a4e-4276-8a68-e2e4023c4c02_3.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runrivYKCu_IUI_Injection_molding_of_vario_75f8df7f-4a4e-4276-8a68-e2e4023c4c02_3-300x168.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p><strong>Fun\u00e7\u00e3o:<\/strong>Certifique-se de que tem pl\u00e1stico suficiente para preencher a cavidade do molde, de modo a obter o aspeto e o tamanho que pretende para o seu produto.<\/p>\n<p><strong>Princ\u00edpio : <\/strong>O curso de dosagem deve ser definido de acordo com o tamanho do produto e o tamanho da m\u00e1quina. O curso de dosagem n\u00e3o deve ser demasiado grande para evitar que a inje\u00e7\u00e3o de pl\u00e1stico em excesso permane\u00e7a no tubo de material durante demasiado tempo e provoque carboniza\u00e7\u00e3o.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-927 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"336\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runTX40mi4wo5M_Various_car_handles_in_var_c0dcf0db-0e37-4a3f-aae0-bcce02938122_0.jpg\" alt=\"\" class=\"wp-image-41282\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runTX40mi4wo5M_Various_car_handles_in_var_c0dcf0db-0e37-4a3f-aae0-bcce02938122_0.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runTX40mi4wo5M_Various_car_handles_in_var_c0dcf0db-0e37-4a3f-aae0-bcce02938122_0-300x168.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p>O curso de dosagem n\u00e3o pode ser demasiado pequeno para garantir que o enchimento \u00e9 suficiente e para evitar danos mec\u00e2nicos no parafuso e no bocal. Deve existir uma folga de 3 a 5 mm.<\/p>\n<h4 class=\"wp-block-heading\">Curso de inje\u00e7\u00e3o<\/h4>\n<p><strong>Defini\u00e7\u00e3o:<\/strong> O parafuso move-se para a frente e para tr\u00e1s durante o processo de inje\u00e7\u00e3o.<\/p>\n<p><strong>Fun\u00e7\u00e3o: <\/strong>O parafuso move-se r\u00e1pida ou lentamente para controlar a forma como o pl\u00e1stico flui.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-928 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"336\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runWCpiebvQVDs_Injection_molding_of_comme_fcb76cc2-8e47-473a-82fa-d45dfdc7477e_3.jpg\" alt=\"\" class=\"wp-image-41283\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runWCpiebvQVDs_Injection_molding_of_comme_fcb76cc2-8e47-473a-82fa-d45dfdc7477e_3.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runWCpiebvQVDs_Injection_molding_of_comme_fcb76cc2-8e47-473a-82fa-d45dfdc7477e_3-300x168.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p><strong>Princ\u00edpio : <\/strong>A posi\u00e7\u00e3o de dosagem \u00e9 determinada pela quantidade de enchimento do produto acabado. Normalmente, 3~5mm de impulso s\u00e3o adicionados a este valor para determinar a configura\u00e7\u00e3o final. O ponto de comuta\u00e7\u00e3o para a segunda velocidade \u00e9 normalmente comutado para a c\u00e2mara quente e para a posi\u00e7\u00e3o da cabe\u00e7a.<\/p>\n<p>O ponto de comuta\u00e7\u00e3o para a terceira velocidade \u00e9 definido com 90% do grau de enchimento do produto moldado. O ponto de comuta\u00e7\u00e3o de reten\u00e7\u00e3o de press\u00e3o \u00e9 geralmente definido na posi\u00e7\u00e3o 90% do grau de enchimento do produto acabado.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-929 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"336\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runvxtEQA4_gpM_Injection_molding_square_v_956cb755-065b-42ba-bb54-8821c6c18f89_3.jpg\" alt=\"\" class=\"wp-image-41284\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runvxtEQA4_gpM_Injection_molding_square_v_956cb755-065b-42ba-bb54-8821c6c18f89_3.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runvxtEQA4_gpM_Injection_molding_square_v_956cb755-065b-42ba-bb54-8821c6c18f89_3-300x168.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<h4 class=\"wp-block-heading\">Montante da retra\u00e7\u00e3o<\/h4>\n<p><strong>Defini\u00e7\u00e3o: <\/strong>Depois de o parafuso ser pr\u00e9-plastificado (doseado) no local, recua uma dist\u00e2ncia em linha reta. Esta a\u00e7\u00e3o de recuo \u00e9 designada por afrouxamento posterior, e a dist\u00e2ncia de afrouxamento \u00e9 designada por quantidade de afrouxamento ou quantidade anti-atraso.<\/p>\n<p><strong>princ\u00edpio:<\/strong> Pode ser definido de acordo com a viscosidade, densidade relativa e situa\u00e7\u00e3o atual da mat\u00e9ria-prima pl\u00e1stica. Uma maior quantidade de liberta\u00e7\u00e3o far\u00e1 com que a massa fundida se misture com bolhas, afectando a qualidade do produto.<\/p>\n<p><strong>Fun\u00e7\u00e3o: <\/strong>A v\u00e1lvula de contrapress\u00e3o aumenta o volume da massa fundida na c\u00e2mara de dosagem, baixa a press\u00e3o no interior e evita que a massa fundida saia da c\u00e2mara de dosagem.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-930 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"336\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runYzXTtWdRA4M_Injection_molding_of_vario_b69c43fb-5f8e-4055-b17b-c3ac5152c87f_3.jpg\" alt=\"\" class=\"wp-image-41285\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runYzXTtWdRA4M_Injection_molding_of_vario_b69c43fb-5f8e-4055-b17b-c3ac5152c87f_3.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runYzXTtWdRA4M_Injection_molding_of_vario_b69c43fb-5f8e-4055-b17b-c3ac5152c87f_3-300x168.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p>A defini\u00e7\u00e3o da quantidade de liberta\u00e7\u00e3o deve ser adaptada \u00e0 velocidade do parafuso e \u00e0 contrapress\u00e3o. Para mat\u00e9rias-primas com viscosidade mais elevada (como o PC), a quantidade de liberta\u00e7\u00e3o pode ser ajustada.<\/p>\n<h4 class=\"wp-block-heading\">Posi\u00e7\u00e3o residual<\/h4>\n<p><strong>Defini\u00e7\u00e3o:<\/strong>&nbsp;Quando a inje\u00e7\u00e3o do parafuso estiver conclu\u00edda, n\u00e3o se pretende empurrar para fora todo o material fundido na cabe\u00e7a do parafuso. \u00c9 necess\u00e1rio deixar algum para tr\u00e1s. Acaba por sobrar um pouco, que \u00e9 o tamp\u00e3o.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-931 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"377\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runq0LGsm2lA-w_Detailed_Realism_GENRE_Sti_9e3e82ef-3ea3-4964-a783-9dcc3da5028c_2.jpg\" alt=\"\" class=\"wp-image-41286\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runq0LGsm2lA-w_Detailed_Realism_GENRE_Sti_9e3e82ef-3ea3-4964-a783-9dcc3da5028c_2.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runq0LGsm2lA-w_Detailed_Realism_GENRE_Sti_9e3e82ef-3ea3-4964-a783-9dcc3da5028c_2-300x189.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p><strong>Fun\u00e7\u00e3o:<\/strong>&nbsp;Evitar os acidentes provocados pelo embate da cabe\u00e7a do parafuso no bico. Controlar a quantidade de pl\u00e1stico injectada de cada vez.<\/p>\n<p><strong>princ\u00edpio:<\/strong> N\u00e3o fa\u00e7a o amortecedor demasiado grande ou demasiado pequeno. Se for demasiado grande, ter\u00e1 demasiados restos de material, o que causar\u00e1 perda de press\u00e3o e degradar\u00e1 a mat\u00e9ria-prima. Se for demasiado pequeno, n\u00e3o obter\u00e1 o efeito de amortecimento que procura. A regra geral \u00e9 fazer o amortecedor de 3 a 5 mm.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-932 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"377\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_a_bag_of_orange_and_black_plastic_parts_in_the_styl_94904883-ff0a-4850-8499-3ffec9243cf5_2.jpg\" alt=\"\" class=\"wp-image-41287\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_a_bag_of_orange_and_black_plastic_parts_in_the_styl_94904883-ff0a-4850-8499-3ffec9243cf5_2.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_a_bag_of_orange_and_black_plastic_parts_in_the_styl_94904883-ff0a-4850-8499-3ffec9243cf5_2-300x189.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<h3 class=\"wp-block-heading\">Tempo <\/h3>\n<h4 class=\"wp-block-heading\">Ciclo<\/h4>\n<p><strong>Defini\u00e7\u00e3o: <\/strong>O tempo decorrido entre o fim da abertura do molde e o fim da abertura do molde ap\u00f3s a inje\u00e7\u00e3o seguinte \u00e9 arrefecido.<\/p>\n<p><strong>Fun\u00e7\u00e3o:<\/strong> Certificar-se de que o produto est\u00e1 formado e completamente arrefecido e fixado.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-933 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"496\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runi45YzMmm8bc_injection_molding_parts_-_1ff1d81b-5181-4e88-82d4-642b29345945_3.jpg\" alt=\"\" class=\"wp-image-41289\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runi45YzMmm8bc_injection_molding_parts_-_1ff1d81b-5181-4e88-82d4-642b29345945_3.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runi45YzMmm8bc_injection_molding_parts_-_1ff1d81b-5181-4e88-82d4-642b29345945_3-300x248.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p><strong>princ\u00edpio:<\/strong> Tornar o ciclo o mais curto poss\u00edvel. O encurtamento do ciclo deve ser efectuado com a premissa de garantir a qualidade do produto.<\/p>\n<h4 class=\"wp-block-heading\">Tempo de arrefecimento<\/h4>\n<p><strong>Defini\u00e7\u00e3o:<\/strong> O tempo que o produto demora a arrefecer e a endurecer sem ficar estragado depois de ser retirado do molde.<\/p>\n<p><strong>&nbsp;Fun\u00e7\u00e3o:<\/strong> Deixar o produto endurecer. Evitar que o produto se estrague.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-934 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"336\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runmRrB60uTAEY_Injection_molding_computer_d4d5f2fe-c510-472d-890c-77e135269b36_3.jpg\" alt=\"\" class=\"wp-image-41290\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runmRrB60uTAEY_Injection_molding_computer_d4d5f2fe-c510-472d-890c-77e135269b36_3.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runmRrB60uTAEY_Injection_molding_computer_d4d5f2fe-c510-472d-890c-77e135269b36_3-300x168.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p><strong>princ\u00edpio:<\/strong> O tempo de arrefecimento \u00e9 uma parte importante do tempo de ciclo e deve ser o mais curto poss\u00edvel, garantindo ao mesmo tempo a qualidade do produto. (2) O tempo de arrefecimento depende da temperatura da fus\u00e3o, da temperatura do molde, da forma e da espessura do produto.<\/p>\n<h4 class=\"wp-block-heading\">Tempo de reten\u00e7\u00e3o da prensa<\/h4>\n<p><strong>Defini\u00e7\u00e3o: <\/strong>A press\u00e3o que continua a ser aplicada ap\u00f3s a inje\u00e7\u00e3o para evitar o refluxo do pl\u00e1stico ap\u00f3s a inje\u00e7\u00e3o e a compensa\u00e7\u00e3o do encolhimento por arrefecimento.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-935 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"377\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runonKvqMbIZNU_Small_Mechanical_Parts_GEN_f06f5397-69d5-4c67-825e-955c87376780_2.jpg\" alt=\"\" class=\"wp-image-41291\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runonKvqMbIZNU_Small_Mechanical_Parts_GEN_f06f5397-69d5-4c67-825e-955c87376780_2.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runonKvqMbIZNU_Small_Mechanical_Parts_GEN_f06f5397-69d5-4c67-825e-955c87376780_2-300x189.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p><strong>Fun\u00e7\u00e3o:<\/strong> Evitar o refluxo da massa fundida ap\u00f3s a inje\u00e7\u00e3o. Compensa\u00e7\u00e3o do encolhimento por arrefecimento.<\/p>\n<p><strong>princ\u00edpio:<\/strong> O tempo de reten\u00e7\u00e3o da prensa depende da espessura do produto. O tempo de espera varia consoante a temperatura da massa fundida.<\/p>\n<p>Quanto mais elevada for a temperatura, maior ser\u00e1 o tempo necess\u00e1rio, enquanto que quanto mais baixa for a temperatura, menor ser\u00e1 o tempo de espera. A fim de melhorar a efici\u00eancia da produ\u00e7\u00e3o, o tempo de espera deve ser o mais curto poss\u00edvel, assegurando simultaneamente a qualidade do produto.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-936 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"377\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runq0LGsm2lA-w_Detailed_Realism_GENRE_Sti_9e3e82ef-3ea3-4964-a783-9dcc3da5028c_1.jpg\" alt=\"\" class=\"wp-image-41292\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runq0LGsm2lA-w_Detailed_Realism_GENRE_Sti_9e3e82ef-3ea3-4964-a783-9dcc3da5028c_1.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runq0LGsm2lA-w_Detailed_Realism_GENRE_Sti_9e3e82ef-3ea3-4964-a783-9dcc3da5028c_1-300x189.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<h4 class=\"wp-block-heading\">Tempo de inje\u00e7\u00e3o<\/h4>\n<p><strong>Defini\u00e7\u00e3o: <\/strong>O tempo necess\u00e1rio para que a massa fundida preencha toda a cavidade.<\/p>\n<p><strong>Fun\u00e7\u00e3o:<\/strong> O tempo de inje\u00e7\u00e3o \u00e9 determinado por factores como a press\u00e3o de inje\u00e7\u00e3o, a velocidade de inje\u00e7\u00e3o e o tamanho do produto.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-937 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"336\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.run5Used6H61-A_Injection_molded_barrels_o_e6e2de41-ce97-4dbf-bd4e-0c7466e9d18f_1.jpg\" alt=\"\" class=\"wp-image-41293\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.run5Used6H61-A_Injection_molded_barrels_o_e6e2de41-ce97-4dbf-bd4e-0c7466e9d18f_1.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.run5Used6H61-A_Injection_molded_barrels_o_e6e2de41-ce97-4dbf-bd4e-0c7466e9d18f_1-300x168.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p><strong>princ\u00edpio:<\/strong> Tornar o tempo de inje\u00e7\u00e3o t\u00e3o curto quanto poss\u00edvel, assegurando simultaneamente a moldagem do produto. O tempo de inje\u00e7\u00e3o \u00e9 afetado por factores como a temperatura do material e a temperatura do molde.<\/p>\n<h4 class=\"wp-block-heading\">Tempo de fus\u00e3o<\/h4>\n<p><strong>Defini\u00e7\u00e3o:<\/strong> O tempo necess\u00e1rio para que o parafuso chegue ao fim do cilindro ap\u00f3s a paragem da inje\u00e7\u00e3o.<\/p>\n<p><strong>Fun\u00e7\u00e3o:<\/strong> Certifique-se de que existe pl\u00e1stico derretido suficiente.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-938 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"336\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runUX2Pr0kxt4Y_plastic_injection_molding__2c35dd13-6c52-472a-a410-218b2ae33a5c_1.jpg\" alt=\"\" class=\"wp-image-41294\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runUX2Pr0kxt4Y_plastic_injection_molding__2c35dd13-6c52-472a-a410-218b2ae33a5c_1.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runUX2Pr0kxt4Y_plastic_injection_molding__2c35dd13-6c52-472a-a410-218b2ae33a5c_1-300x168.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p><strong>princ\u00edpio:<\/strong> A velocidade do parafuso e a contrapress\u00e3o est\u00e3o inter-relacionadas. N\u00e3o deixe que o pl\u00e1stico fundido permane\u00e7a no parafuso durante demasiado tempo, caso contr\u00e1rio decompor-se-\u00e1 e carbonizar\u00e1 a alta temperatura durante muito tempo.<\/p>\n<h4 class=\"wp-block-heading\">Tempo de secagem<\/h4>\n<p><strong>Defini\u00e7\u00e3o:<\/strong> O tempo necess\u00e1rio para secar previamente as mat\u00e9rias-primas utilizando equipamento de secagem.<\/p>\n<p><strong>Fun\u00e7\u00e3o:<\/strong> Tornar a superf\u00edcie brilhante, torn\u00e1-la flex\u00edvel e forte, n\u00e3o a deixar rachar ou fazer bolhas no interior. Torn\u00e1-lo f\u00e1cil de moldar e r\u00e1pido de moldar. As mat\u00e9rias-primas n\u00e3o devem estar molhadas nem h\u00famidas.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-939 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"377\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runVvSU0S0DotE_Professional_Product_Photo_75c888f6-4f00-40e0-8152-dca990b8fadd_2.jpg\" alt=\"\" class=\"wp-image-41295\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runVvSU0S0DotE_Professional_Product_Photo_75c888f6-4f00-40e0-8152-dca990b8fadd_2.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runVvSU0S0DotE_Professional_Product_Photo_75c888f6-4f00-40e0-8152-dca990b8fadd_2-300x189.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p><strong>princ\u00edpio:<\/strong> O tempo de secagem varia consoante as mat\u00e9rias-primas. Definir corretamente o tempo de secagem. Um tempo demasiado longo reduz a efici\u00eancia da secagem e pode mesmo provocar a aglomera\u00e7\u00e3o das mat\u00e9rias-primas. Demasiado curto resultar\u00e1 num efeito de secagem fraco.<\/p>\n<h2 class=\"wp-block-heading\">Como ajustar os par\u00e2metros do processo de moldagem por inje\u00e7\u00e3o<\/h2>\n<h3 class=\"wp-block-heading\">Temperatura<\/h3>\n<p>Temperature measurement and control are super important in injection molding. It\u2019s pretty easy to make these measurements, but most injection molding machines don\u2019t have enough temperature sampling points or lines.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-940 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"336\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runWCpiebvQVDs_Injection_molding_of_comme_fcb76cc2-8e47-473a-82fa-d45dfdc7477e_1.jpg\" alt=\"\" class=\"wp-image-41296\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runWCpiebvQVDs_Injection_molding_of_comme_fcb76cc2-8e47-473a-82fa-d45dfdc7477e_1.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runWCpiebvQVDs_Injection_molding_of_comme_fcb76cc2-8e47-473a-82fa-d45dfdc7477e_1-300x168.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p>A maioria das m\u00e1quinas de moldagem por inje\u00e7\u00e3o utiliza termopares para detetar a temperatura. Um termopar \u00e9 constitu\u00eddo por dois fios diferentes ligados numa extremidade. Se uma extremidade estiver mais quente do que a outra, \u00e9 gerado um pequeno sinal. Quanto mais quente estiver, mais forte \u00e9 o sinal.<\/p>\n<h4 class=\"wp-block-heading\">Temperatura de fus\u00e3o<\/h4>\n<p>Os termopares s\u00e3o tamb\u00e9m amplamente utilizados como sensores em sistemas de controlo de temperatura. No instrumento de controlo, define-se a temperatura pretendida e o visor do sensor compara a temperatura que est\u00e1 a detetar com a temperatura definida.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-941 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"336\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runF0znDyT992E_Injection_molding_of_vario_f4506c61-f6b1-4c90-9efb-8fd9ee770056_3.jpg\" alt=\"\" class=\"wp-image-41297\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runF0znDyT992E_Injection_molding_of_vario_f4506c61-f6b1-4c90-9efb-8fd9ee770056_3.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runF0znDyT992E_Injection_molding_of_vario_f4506c61-f6b1-4c90-9efb-8fd9ee770056_3-300x168.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p>No sistema mais simples, quando a temperatura atinge o ponto de regula\u00e7\u00e3o, a energia desliga-se e volta a ligar-se quando a temperatura desce. Este sistema \u00e9 designado por controlo on-off porque est\u00e1 ligado ou desligado.<\/p>\n<h4 class=\"wp-block-heading\">Controlo da temperatura<\/h4>\n<p>A temperatura de fus\u00e3o \u00e9 importante e a temperatura do cilindro de inje\u00e7\u00e3o utilizada \u00e9 apenas um guia. A temperatura de fus\u00e3o pode ser medida no bocal ou utilizando o m\u00e9todo do jato de ar.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-942 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"336\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runGFCo_eRXNXg_Injection_molding_of_compu_6386646c-bd2f-4d71-b82f-965ba4c3e033_0.jpg\" alt=\"\" class=\"wp-image-41298\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runGFCo_eRXNXg_Injection_molding_of_compu_6386646c-bd2f-4d71-b82f-965ba4c3e033_0.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runGFCo_eRXNXg_Injection_molding_of_compu_6386646c-bd2f-4d71-b82f-965ba4c3e033_0-300x168.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p>A regula\u00e7\u00e3o da temperatura do cilindro de inje\u00e7\u00e3o depende da temperatura da massa fundida, da velocidade da rosca, da contrapress\u00e3o, do tamanho da inje\u00e7\u00e3o e do ciclo de inje\u00e7\u00e3o.<\/p>\n<p>Se n\u00e3o souber com que tipo de pl\u00e1stico est\u00e1 a trabalhar, comece com a defini\u00e7\u00e3o mais baixa. O cilindro de inje\u00e7\u00e3o est\u00e1 dividido em zonas, mas nem todas est\u00e3o reguladas para a mesma temperatura.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-943 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"336\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runLrirJ0nmGlA_injection_molding_product__9e7a337f-1a1c-4b1c-aa91-4a8da827aaa6_0.jpg\" alt=\"\" class=\"wp-image-41299\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runLrirJ0nmGlA_injection_molding_product__9e7a337f-1a1c-4b1c-aa91-4a8da827aaa6_0.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runLrirJ0nmGlA_injection_molding_product__9e7a337f-1a1c-4b1c-aa91-4a8da827aaa6_0-300x168.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p>Se estiver a executar um trabalho longo ou a funcionar a temperaturas elevadas, regule a temperatura da primeira zona para um valor mais baixo.<\/p>\n<p>Isto evitar\u00e1 que o pl\u00e1stico derreta e entre em curto-circuito demasiado cedo. Antes de come\u00e7ar a moldar, certifique-se de que o \u00f3leo hidr\u00e1ulico, a tremonha mais pr\u00f3xima, o molde e o cilindro de inje\u00e7\u00e3o est\u00e3o \u00e0 temperatura correta.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-944 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"336\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runSa5u7IoKP1A_Injection_molded_plastic_c_803ed853-f06f-4fe7-8324-b67474c401df_1.jpg\" alt=\"\" class=\"wp-image-41300\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runSa5u7IoKP1A_Injection_molded_plastic_c_803ed853-f06f-4fe7-8324-b67474c401df_1.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runSa5u7IoKP1A_Injection_molded_plastic_c_803ed853-f06f-4fe7-8324-b67474c401df_1-300x168.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<h3 class=\"wp-block-heading\">Press\u00e3o de inje\u00e7\u00e3o<\/h3>\n<p>Esta \u00e9 a press\u00e3o que faz com que o pl\u00e1stico se mova. Pode medi-la com um sensor no bocal ou na linha hidr\u00e1ulica.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-945 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"336\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runxJ2xfa0d-8M_Injection_molding_of_vario_7741867f-e11d-45c4-a261-5d732214af76_0.jpg\" alt=\"\" class=\"wp-image-41301\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runxJ2xfa0d-8M_Injection_molding_of_vario_7741867f-e11d-45c4-a261-5d732214af76_0.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runxJ2xfa0d-8M_Injection_molding_of_vario_7741867f-e11d-45c4-a261-5d732214af76_0-300x168.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p>N\u00e3o existe um n\u00famero definido. Quanto mais dif\u00edcil for encher o molde, maior ser\u00e1 a press\u00e3o de inje\u00e7\u00e3o. A press\u00e3o da linha de inje\u00e7\u00e3o e a press\u00e3o de inje\u00e7\u00e3o est\u00e3o diretamente relacionadas.<\/p>\n<h4 class=\"wp-block-heading\">Press\u00e3o do primeiro est\u00e1gio e press\u00e3o do segundo est\u00e1gio<\/h4>\n<p>Durante a fase de enchimento do ciclo de inje\u00e7\u00e3o, pode necessitar de uma press\u00e3o de inje\u00e7\u00e3o elevada para manter a velocidade de inje\u00e7\u00e3o na velocidade pretendida. Quando o molde estiver cheio, deixa de ser necess\u00e1ria uma press\u00e3o elevada.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-946 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"377\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runVvSU0S0DotE_Professional_Product_Photo_75c888f6-4f00-40e0-8152-dca990b8fadd_0.jpg\" alt=\"\" class=\"wp-image-41302\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runVvSU0S0DotE_Professional_Product_Photo_75c888f6-4f00-40e0-8152-dca990b8fadd_0.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runVvSU0S0DotE_Professional_Product_Photo_75c888f6-4f00-40e0-8152-dca990b8fadd_0-300x189.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p>No entanto, se estiver a injetar alguns termopl\u00e1sticos semi-cristalinos (como o PA e o POM), a estrutura degradar-se-\u00e1 se alterar subitamente a press\u00e3o, pelo que, por vezes, n\u00e3o \u00e9 necess\u00e1rio utilizar a press\u00e3o da segunda fase.<\/p>\n<h4 class=\"wp-block-heading\">Press\u00e3o de aperto<\/h4>\n<p>Para contrabalan\u00e7ar a press\u00e3o de inje\u00e7\u00e3o, \u00e9 necess\u00e1rio utilizar a press\u00e3o de aperto. N\u00e3o se limite a selecionar automaticamente o valor m\u00e1ximo dispon\u00edvel, mas considere a \u00e1rea projectada e calcule um valor adequado.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-947 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"336\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runKhO5KvZPHPA_Injection_molded_plastic_b_1c76fa26-bb0e-4bc2-b518-547fbf1c17ac_0.jpg\" alt=\"\" class=\"wp-image-41303\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runKhO5KvZPHPA_Injection_molded_plastic_b_1c76fa26-bb0e-4bc2-b518-547fbf1c17ac_0.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runKhO5KvZPHPA_Injection_molded_plastic_b_1c76fa26-bb0e-4bc2-b518-547fbf1c17ac_0-300x168.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p>A \u00e1rea projectada da pe\u00e7a moldada por inje\u00e7\u00e3o \u00e9 a \u00e1rea m\u00e1xima vista a partir da dire\u00e7\u00e3o de aplica\u00e7\u00e3o da for\u00e7a de aperto.<\/p>\n<p>Para a maioria dos <a href=\"https:\/\/zetarmold.com\/pt\/\" data-type=\"link\" data-id=\"https:\/\/zetarmold.com\/\" target=\"_blank\" rel=\"noreferrer noopener\">moldagem por inje\u00e7\u00e3o<\/a> situa\u00e7\u00f5es, \u00e9 cerca de 2 toneladas por polegada quadrada, ou 31 meganewtons por metro quadrado. Mas esse \u00e9 apenas um valor baixo e deve ser usado como uma regra geral, porque, se a pe\u00e7a tiver alguma profundidade, \u00e9 preciso considerar a parede lateral.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-948 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"336\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runPG9Sjj5vzSo_Injection_molding_of_vario_1488c58a-738c-4738-a559-e5dde33336d7_1.jpg\" alt=\"\" class=\"wp-image-41304\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runPG9Sjj5vzSo_Injection_molding_of_vario_1488c58a-738c-4738-a559-e5dde33336d7_1.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runPG9Sjj5vzSo_Injection_molding_of_vario_1488c58a-738c-4738-a559-e5dde33336d7_1-300x168.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<h4 class=\"wp-block-heading\">Press\u00e3o de retorno<\/h4>\n<p>Esta \u00e9 a press\u00e3o que tem de ser gerada e excedida antes de o parafuso recuar. Embora uma contrapress\u00e3o elevada seja boa para a distribui\u00e7\u00e3o uniforme dos corantes e para a fus\u00e3o dos pl\u00e1sticos, tamb\u00e9m torna o retorno do parafuso interm\u00e9dio mais lento, reduz o comprimento das fibras contidas no pl\u00e1stico de enchimento e aumenta a tens\u00e3o da m\u00e1quina de moldagem por inje\u00e7\u00e3o.<\/p>\n<p>Assim, quanto mais baixa for a contrapress\u00e3o, melhor.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-949 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"336\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.run5Y0u1MddjqA_Two-tone_yellow_and_black__ba2476a9-2855-458a-9df5-40cf32006b95_2-1.jpg\" alt=\"\" class=\"wp-image-41305\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.run5Y0u1MddjqA_Two-tone_yellow_and_black__ba2476a9-2855-458a-9df5-40cf32006b95_2-1.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.run5Y0u1MddjqA_Two-tone_yellow_and_black__ba2476a9-2855-458a-9df5-40cf32006b95_2-1-300x168.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p>Em qualquer caso, n\u00e3o pode exceder a press\u00e3o de moldagem por inje\u00e7\u00e3o da m\u00e1quina de moldagem por inje\u00e7\u00e3o.<\/p>\n<h4 class=\"wp-block-heading\">Press\u00e3o do bico<\/h4>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-950 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"336\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.run9lE2c01aMZI_Injection_molded_lunch_box_2f9ae61f-7e21-47cd-979c-55526f910627_0.jpg\" alt=\"\" class=\"wp-image-41306\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.run9lE2c01aMZI_Injection_molded_lunch_box_2f9ae61f-7e21-47cd-979c-55526f910627_0.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.run9lE2c01aMZI_Injection_molded_lunch_box_2f9ae61f-7e21-47cd-979c-55526f910627_0-300x168.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p>A press\u00e3o do bocal \u00e9 a press\u00e3o no interior do bocal. \u00c9, grosso modo, a press\u00e3o que faz o pl\u00e1stico fluir. N\u00e3o tem um valor fixo, mas aumenta \u00e0 medida que o molde se torna mais dif\u00edcil de encher. A press\u00e3o do bico, a press\u00e3o da linha e a press\u00e3o de inje\u00e7\u00e3o est\u00e3o todas relacionadas.<\/p>\n<p>A press\u00e3o do bocal \u00e9 cerca de 10% inferior \u00e0 press\u00e3o de inje\u00e7\u00e3o. Numa m\u00e1quina de moldagem por inje\u00e7\u00e3o de parafuso, a perda de press\u00e3o pode ser de cerca de 10%. Numa m\u00e1quina de moldagem por inje\u00e7\u00e3o de pist\u00e3o, a perda de press\u00e3o pode ser de 50%.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-951 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"336\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runie9wJf3j0oo_injection_molding_product__51272f01-cb92-4a36-886e-6af1adc52e67_3.jpg\" alt=\"\" class=\"wp-image-41308\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runie9wJf3j0oo_injection_molding_product__51272f01-cb92-4a36-886e-6af1adc52e67_3.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runie9wJf3j0oo_injection_molding_product__51272f01-cb92-4a36-886e-6af1adc52e67_3-300x168.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<h3 class=\"wp-block-heading\">Velocidade de inje\u00e7\u00e3o<\/h3>\n<p>Trata-se da rapidez com que o molde se enche quando o parafuso \u00e9 utilizado como um \u00eambolo. Quando se est\u00e1 a fotografar pe\u00e7as de paredes finas, \u00e9 necess\u00e1rio fotografar rapidamente para encher o molde antes que o pl\u00e1stico congele e crie uma superf\u00edcie mais lisa.<\/p>\n<p>Utilizamos uma s\u00e9rie de velocidades de disparo programadas durante o enchimento para evitar defeitos como pulveriza\u00e7\u00e3o ou ar preso. A inje\u00e7\u00e3o pode ser feita atrav\u00e9s de um sistema de controlo de circuito aberto ou fechado.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-952 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"338\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/8.jpeg\" alt=\"\" class=\"wp-image-41309\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/8.jpeg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/8-300x169.jpeg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p>Independentemente da velocidade de inje\u00e7\u00e3o, deve registar a velocidade na folha de registo juntamente com o tempo. O tempo \u00e9 o tempo necess\u00e1rio para que o molde atinja a press\u00e3o de inje\u00e7\u00e3o da primeira fase que definiu, o que faz parte do tempo de avan\u00e7o do parafuso.<\/p>\n<h2 class=\"wp-block-heading\">Resumo<\/h2>\n<p>A qualidade e a efici\u00eancia da moldagem por inje\u00e7\u00e3o dependem da defini\u00e7\u00e3o \u00f3ptima de par\u00e2metros como a temperatura, a velocidade, a press\u00e3o, a posi\u00e7\u00e3o e o tempo. O ajuste correto destes par\u00e2metros pode garantir a qualidade e a efici\u00eancia da produ\u00e7\u00e3o do produto e reduzir a taxa de refugo. Estes conhecimentos b\u00e1sicos s\u00e3o essenciais para a implementa\u00e7\u00e3o bem sucedida da moldagem por inje\u00e7\u00e3o.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-953 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"336\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runh2w0nm-V07s_Injection_molding_of_elect_5d4b99e7-e7a3-480e-8056-93b9dc5d2b4c_1-1.jpg\" alt=\"\" class=\"wp-image-41307\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runh2w0nm-V07s_Injection_molding_of_elect_5d4b99e7-e7a3-480e-8056-93b9dc5d2b4c_1-1.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/zetar6756_httpss.mj_.runh2w0nm-V07s_Injection_molding_of_elect_5d4b99e7-e7a3-480e-8056-93b9dc5d2b4c_1-1-300x168.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p>Na moldagem por inje\u00e7\u00e3o, garantir a qualidade e a efici\u00eancia do produto requer uma regula\u00e7\u00e3o precisa da temperatura, velocidade, press\u00e3o, posi\u00e7\u00e3o e tempo.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-954 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"335\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/\u8bbe\u8ba111.jpg\" alt=\"\" class=\"wp-image-41262\" srcset=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/\u8bbe\u8ba111.jpg 600w, https:\/\/zetarmold.com\/wp-content\/uploads\/2024\/09\/\u8bbe\u8ba111-300x168.jpg 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p>Os moldes de inje\u00e7\u00e3o de pl\u00e1stico personalizados devem assegurar uma espessura de parede uniforme e uma linha de separa\u00e7\u00e3o correta do molde, e utilizar o desmoldante. A otimiza\u00e7\u00e3o destes par\u00e2metros (como a temperatura do material, a velocidade de inje\u00e7\u00e3o e o tempo de espera) ajuda a melhorar a qualidade do produto e a reduzir os ciclos de moldagem.<\/p>\n<p>Al\u00e9m disso, em <a href=\"https:\/\/zetarmold.com\/pt\/\" target=\"_blank\" rel=\"noreferrer noopener\">moldagem por inje\u00e7\u00e3o de pl\u00e1stico<\/a>O molde de inje\u00e7\u00e3o autom\u00e1tico personalizado pode ser utilizado para produzir com precis\u00e3o pe\u00e7as de pl\u00e1stico com a forma desejada. As metades do molde de inje\u00e7\u00e3o personalizado s\u00e3o utilizadas para otimizar a utiliza\u00e7\u00e3o do material de moldagem, melhorando assim a qualidade e a efici\u00eancia do produto.<\/p>\n<div style=\"background:#f0f4f8;padding:20px;border-radius:8px;margin-top:30px;\">\n<p style=\"margin:0 0 10px;font-size:18px;\"><strong>Need a Quote for Your Injection Molding Project?<\/strong><\/p>\n<p style=\"margin:0 0 10px;\">Get competitive pricing, DFM feedback, and production timeline from ZetarMold&#8217;s engineering team.<\/p>\n<p style=\"margin:0;\"><a href=\"https:\/\/zetarmold.com\/pt\/contactar-nos\/\" style=\"background:#2563eb;color:white;padding:12px 24px;border-radius:6px;text-decoration:none;font-weight:bold;\">Request a Free Quote \u2192<\/a> See our <a href=\"https:\/\/zetarmold.com\/pt\/injection-molding-complete-guide\/\">Injection Molding Complete Guide<\/a> for a comprehensive overview.<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":41263,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"none","_seopress_titles_title":"Injection Molding Glossary &#038; Basics | ZetarMold","_seopress_titles_desc":"Discover expert insights on injection molding glossary basics from ZetarMold. We provide professional injection molding services with DFM support, fast","_seopress_robots_index":"","_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[42],"tags":[72],"meta_box":{"post-to-quiz_to":[]},"_links":{"self":[{"href":"https:\/\/zetarmold.com\/pt\/wp-json\/wp\/v2\/posts\/41251"}],"collection":[{"href":"https:\/\/zetarmold.com\/pt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/zetarmold.com\/pt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/zetarmold.com\/pt\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/zetarmold.com\/pt\/wp-json\/wp\/v2\/comments?post=41251"}],"version-history":[{"count":0,"href":"https:\/\/zetarmold.com\/pt\/wp-json\/wp\/v2\/posts\/41251\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/zetarmold.com\/pt\/wp-json\/wp\/v2\/media\/41263"}],"wp:attachment":[{"href":"https:\/\/zetarmold.com\/pt\/wp-json\/wp\/v2\/media?parent=41251"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/zetarmold.com\/pt\/wp-json\/wp\/v2\/categories?post=41251"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/zetarmold.com\/pt\/wp-json\/wp\/v2\/tags?post=41251"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}