{"id":19650,"date":"2024-05-16T06:57:19","date_gmt":"2024-05-15T22:57:19","guid":{"rendered":"https:\/\/firstmold.com\/?p=19650"},"modified":"2026-02-02T11:14:25","modified_gmt":"2026-02-02T03:14:25","slug":"draft-angle","status":"publish","type":"post","link":"https:\/\/firstmold.com\/pt\/guides\/draft-angle\/","title":{"rendered":"O que \u00e9 o \u00e2ngulo de inclina\u00e7\u00e3o no projeto de moldes?"},"content":{"rendered":"<p class=\"wp-block-paragraph\">O \u00e2ngulo de projeto n\u00e3o \u00e9 exclusivo de <a href=\"https:\/\/firstmold.com\/pt\/guides\/what-is-injection-molding\/\" type=\"post\" id=\"9414\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>moldagem por inje\u00e7\u00e3o<\/strong><\/a>. A sua import\u00e2ncia repercute-se em v\u00e1rias tecnologias de processo. Por exemplo, na moldagem por inje\u00e7\u00e3o, o \u00e2ngulo de inclina\u00e7\u00e3o \u00e9 crucial para facilitar a eje\u00e7\u00e3o suave das pe\u00e7as sem causar danos. Do mesmo modo, na <a href=\"https:\/\/firstmold.com\/pt\/guides\/what-is-die-casting\/\" type=\"post\" id=\"32500\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>fundi\u00e7\u00e3o injectada<\/strong><\/a>, O \u00e2ngulo de inclina\u00e7\u00e3o evita que as pe\u00e7as fundidas fiquem presas no molde. Ao assegurar que o molde e as pe\u00e7as moldadas n\u00e3o est\u00e3o perfeitamente paralelos, o \u00e2ngulo de inclina\u00e7\u00e3o proporciona uma ligeira conicidade que facilita a remo\u00e7\u00e3o das pe\u00e7as. Este conceito estende-se \u00e0 maioria dos processos de fabrico que envolvem moldes, real\u00e7ando a sua import\u00e2ncia universal.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Hoje, vamos discutir este importante conceito.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/what-is-draft-angle.webp\" alt=\"o que \u00e9 o \u00e2ngulo de inclina\u00e7\u00e3o\" class=\"wp-image-31938\" srcset=\"https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/what-is-draft-angle.webp 1200w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/what-is-draft-angle-300x169.webp 300w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/what-is-draft-angle-1024x576.webp 1024w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/what-is-draft-angle-768x432.webp 768w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/what-is-draft-angle-18x10.webp 18w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/what-is-draft-angle-600x338.webp 600w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-meaning-of-draft-angle\">Significado de Draft Angle<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">O termo \u00e2ngulo de inclina\u00e7\u00e3o refere-se ao \u00e2ngulo projetado no molde para facilitar a remo\u00e7\u00e3o da pe\u00e7a moldada. Especificamente, \u00e9 o \u00e2ngulo das superf\u00edcies moldadas na dire\u00e7\u00e3o da abertura do molde.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-who-designs-the-draft-angle\">Quem concebe o \u00e2ngulo do projeto?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Uma vez que o \u00e2ngulo de inclina\u00e7\u00e3o se reflecte, em \u00faltima an\u00e1lise, no molde, discute-se frequentemente se o \u00e2ngulo de inclina\u00e7\u00e3o deve ser concebido pelo engenheiro de estruturas ou pelo engenheiro de moldes. Atualmente, existem duas abordagens principais:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>O engenheiro estrutural deve assegurar que todas as superf\u00edcies t\u00eam um \u00e2ngulo de inclina\u00e7\u00e3o durante a fase de conce\u00e7\u00e3o da pe\u00e7a (exceto no caso de algumas estruturas que requerem a avalia\u00e7\u00e3o do engenheiro de moldes).<\/li>\n\n\n\n<li>O engenheiro de estruturas \u00e9 respons\u00e1vel pela aplica\u00e7\u00e3o de \u00e2ngulos de inclina\u00e7\u00e3o nas superf\u00edcies de apar\u00eancia e nas principais superf\u00edcies de montagem, enquanto outras superf\u00edcies n\u00e3o cr\u00edticas s\u00e3o deixadas para o engenheiro de moldes tratar durante <a href=\"https:\/\/firstmold.com\/pt\/tips\/mold-design\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>conce\u00e7\u00e3o do molde<\/strong><\/a> com base na experi\u00eancia.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Ambas as abordagens t\u00eam os seus pr\u00f3s e contras, e a escolha deve ser feita com base na situa\u00e7\u00e3o espec\u00edfica:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-for-the-first-approach\">Para a primeira abordagem:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Pr\u00f3s:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Assegura a aus\u00eancia de interfer\u00eancias estruturais, mant\u00e9m os requisitos de conce\u00e7\u00e3o para as folgas de montagem e as toler\u00e2ncias dimensionais, garantindo assim a qualidade das pe\u00e7as.<\/li>\n\n\n\n<li>Poupa tempo na revis\u00e3o do DFM (Design for Manufacturability) do molde, evitando disputas de qualidade subsequentes.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Contras:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Requer que o engenheiro estrutural tenha uma vasta experi\u00eancia em moldes; caso contr\u00e1rio, os \u00e2ngulos de inclina\u00e7\u00e3o projectados podem n\u00e3o facilitar uma eje\u00e7\u00e3o suave.<\/li>\n\n\n\n<li>Uma vez que todas as superf\u00edcies necessitam de um \u00e2ngulo de inclina\u00e7\u00e3o, a carga de trabalho do engenheiro estrutural aumenta, podendo atrasar projectos com prazos apertados.<\/li>\n\n\n\n<li>As superf\u00edcies verticais originais tornam-se inclinadas ap\u00f3s a aplica\u00e7\u00e3o de \u00e2ngulos de inclina\u00e7\u00e3o, complicando as modifica\u00e7\u00f5es estruturais subsequentes.<\/li>\n\n\n\n<li>A adi\u00e7\u00e3o de \u00e2ngulos de inclina\u00e7\u00e3o resulta em mais linhas de interfer\u00eancia nos desenhos de engenharia, aumentando a probabilidade de erros de anota\u00e7\u00e3o.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-for-the-second-approach\">Para a segunda abordagem:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Pr\u00f3s:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Poupa tempo de conce\u00e7\u00e3o ao engenheiro estrutural; engenheiros de moldes experientes concebem os \u00e2ngulos de inclina\u00e7\u00e3o, assegurando normalmente uma eje\u00e7\u00e3o suave.<\/li>\n\n\n\n<li>Simplifica as modifica\u00e7\u00f5es estruturais subsequentes e as anota\u00e7\u00f5es de desenhos de engenharia para o engenheiro de estruturas.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Contras:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Os engenheiros de moldes podem n\u00e3o compreender totalmente os requisitos funcionais do produto, pensando apenas numa perspetiva de eje\u00e7\u00e3o, possivelmente n\u00e3o cumprindo os requisitos estruturais, tais como interfer\u00eancias, folgas, dimens\u00f5es e resist\u00eancia.<\/li>\n\n\n\n<li>Aumenta a carga de trabalho do engenheiro de moldes, uma vez que normalmente remove os filetes antes de adicionar o \u00e2ngulo de inclina\u00e7\u00e3o, e depois volta a aplicar os filetes, resultando potencialmente em discrep\u00e2ncias entre os filetes novos e os originais.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-types-of-draft-angles\">Tipos de \u00e2ngulos de inclina\u00e7\u00e3o<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Os \u00e2ngulos de inclina\u00e7\u00e3o podem ser classificados em \u00e2ngulos de inclina\u00e7\u00e3o da cavidade e \u00e2ngulos de inclina\u00e7\u00e3o do n\u00facleo, que se distinguem pela <a href=\"https:\/\/firstmold.com\/pt\/guides\/what-is-a-parting-line\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>linha de separa\u00e7\u00e3o<\/strong><\/a> que separa a cavidade e o n\u00facleo. As superf\u00edcies paralelas \u00e0 dire\u00e7\u00e3o de eje\u00e7\u00e3o na cavidade requerem \u00e2ngulos de estiragem do n\u00facleo, e as do n\u00facleo requerem \u00e2ngulos de estiragem do n\u00facleo. Adicionalmente, se o molde tiver n\u00facleos laterais (<a href=\"https:\/\/firstmold.com\/pt\/guides\/mold-lifter\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>elevadores<\/strong><\/a> e <a href=\"https:\/\/firstmold.com\/pt\/guides\/what-is-an-injection-mold-slider\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>controles deslizantes<\/strong><\/a>), estes requerem \u00e2ngulos de tra\u00e7\u00e3o do elevador e \u00e2ngulos de tra\u00e7\u00e3o do cursor, com a dire\u00e7\u00e3o da tra\u00e7\u00e3o a seguir \u00e0 dire\u00e7\u00e3o do movimento do cursor.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" width=\"1000\" height=\"354\" src=\"https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Types-of-draft-angles.webp\" alt=\"Tipos de \u00e2ngulos de inclina\u00e7\u00e3o\" class=\"wp-image-19674\" srcset=\"https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Types-of-draft-angles.webp 1000w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Types-of-draft-angles-300x106.webp 300w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Types-of-draft-angles-768x272.webp 768w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Types-of-draft-angles-18x6.webp 18w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><figcaption class=\"wp-element-caption\">Tipos de \u00e2ngulos de inclina\u00e7\u00e3o<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">A dire\u00e7\u00e3o da estiragem \u00e9 geralmente baseada na linha de parti\u00e7\u00e3o para garantir que a maior dimens\u00e3o ap\u00f3s a estiragem esteja pr\u00f3xima da linha de parti\u00e7\u00e3o, facilitando a eje\u00e7\u00e3o suave.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" width=\"1000\" height=\"274\" src=\"https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Use-the-parting-line-as-the-DATUM.webp\" alt=\"Utilizar a linha de separa\u00e7\u00e3o como DATUM\" class=\"wp-image-19677\" srcset=\"https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Use-the-parting-line-as-the-DATUM.webp 1000w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Use-the-parting-line-as-the-DATUM-300x82.webp 300w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Use-the-parting-line-as-the-DATUM-768x210.webp 768w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Use-the-parting-line-as-the-DATUM-18x5.webp 18w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><figcaption class=\"wp-element-caption\">Utilizar a linha de separa\u00e7\u00e3o como DATUM<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-why-design-draft-angles\">Porqu\u00ea conceber \u00e2ngulos de inclina\u00e7\u00e3o?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Os \u00e2ngulos de inclina\u00e7\u00e3o s\u00e3o uma estrutura de processo. Teoricamente, as estruturas do produto n\u00e3o necessitam de \u00e2ngulos de inclina\u00e7\u00e3o, a menos que tal seja exigido pelo projeto. No entanto, devido \u00e0s limita\u00e7\u00f5es dos processos de moldagem, como a moldagem por inje\u00e7\u00e3o, os produtos de pl\u00e1stico t\u00eam de ser removidos do molde ap\u00f3s a moldagem e o arrefecimento. Sem os \u00e2ngulos de inclina\u00e7\u00e3o, seria muito dif\u00edcil remover as pe\u00e7as de pl\u00e1stico do molde. Pense na dificuldade de separar bancos de pl\u00e1stico empilhados, que j\u00e1 t\u00eam um \u00e2ngulo de inclina\u00e7\u00e3o, quanto mais pe\u00e7as de pl\u00e1stico sem \u00e2ngulos de inclina\u00e7\u00e3o que precisam de ser retiradas do molde.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-why-is-it-difficult-to-remove-plastic-parts-from-the-mold-without-a-draft-angle\">Porque \u00e9 que \u00e9 dif\u00edcil retirar pe\u00e7as de pl\u00e1stico do molde sem um \u00e2ngulo de inclina\u00e7\u00e3o?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Na moldagem por inje\u00e7\u00e3o, a resina fundida flui para o molde fechado e preenche a cavidade entre o n\u00facleo e a cavidade. Os materiais termopl\u00e1sticos tendem a encolher em dire\u00e7\u00e3o ao n\u00facleo do molde durante o arrefecimento, fazendo com que as pe\u00e7as de pl\u00e1stico adiram firmemente ao n\u00facleo do molde. Adicionalmente, alguns pl\u00e1sticos podem afastar-se microscopicamente da parede da cavidade do molde, mas a maioria continuar\u00e1 a entrar em contacto com a parede da cavidade.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Durante a abertura do molde, quer a superf\u00edcie exterior da pe\u00e7a pl\u00e1stica entre em contacto com a parede da cavidade, quer a superf\u00edcie interior entre em contacto com o n\u00facleo, a pe\u00e7a pl\u00e1stica experimenta uma resist\u00eancia de atrito oposta \u00e0 dire\u00e7\u00e3o de eje\u00e7\u00e3o. A for\u00e7a de atrito, representada por \ud835\udc53=\ud835\udf07\u00d7\ud835\udc39\ud835\udc5b<em>f<\/em>=<em>\u03bc<\/em>\u00d7<em>Fn<\/em>depende da rugosidade da superf\u00edcie de contacto (\ud835\udf07<em>\u03bc<\/em>) e o <a href=\"https:\/\/firstmold.com\/pt\/guides\/plastic-shrinkage\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>tens\u00e3o de contra\u00e7\u00e3o<\/strong><\/a> (\ud835\udc39\ud835\udc5b<em>Fn<\/em>), que por sua vez est\u00e1 relacionado com o \u00e2ngulo de inclina\u00e7\u00e3o.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"372\" src=\"https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/The-relationship-between-friction-shrinkage-stress-and-draft-angle.webp\" alt=\"A rela\u00e7\u00e3o entre o atrito, a tens\u00e3o de retra\u00e7\u00e3o e o \u00e2ngulo de inclina\u00e7\u00e3o\" class=\"wp-image-19671\" srcset=\"https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/The-relationship-between-friction-shrinkage-stress-and-draft-angle.webp 1000w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/The-relationship-between-friction-shrinkage-stress-and-draft-angle-300x112.webp 300w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/The-relationship-between-friction-shrinkage-stress-and-draft-angle-768x286.webp 768w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/The-relationship-between-friction-shrinkage-stress-and-draft-angle-18x7.webp 18w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><figcaption class=\"wp-element-caption\">A rela\u00e7\u00e3o entre o atrito, a tens\u00e3o de retra\u00e7\u00e3o e o \u00e2ngulo de inclina\u00e7\u00e3o<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Ao conceber um \u00e2ngulo de inclina\u00e7\u00e3o, a for\u00e7a de atrito na dire\u00e7\u00e3o de eje\u00e7\u00e3o \ud835\udc53=\ud835\udf07\u00d7\ud835\udc39\ud835\udc5b\u00d7cos\ud835\udefc<em>f<\/em>=<em>\u03bc<\/em>\u00d7<em>F<\/em><em>n<\/em>\u00d7cos<em>\u03b1<\/em> diminui \u00e0 medida que o \u00e2ngulo de inclina\u00e7\u00e3o \ud835\udefc<em>\u03b1<\/em> aumenta. Geralmente, o \u00e2ngulo de inclina\u00e7\u00e3o n\u00e3o \u00e9 muito grande, pelo que a sua contribui\u00e7\u00e3o para a redu\u00e7\u00e3o do atrito est\u00e1tico \u00e9 limitada.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"437\" src=\"https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Effect-of-vacuum-suction-on-injection-molded-parts.webp\" alt=\"Efeito da suc\u00e7\u00e3o a v\u00e1cuo em pe\u00e7as moldadas por inje\u00e7\u00e3o\" class=\"wp-image-19657\" srcset=\"https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Effect-of-vacuum-suction-on-injection-molded-parts.webp 1000w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Effect-of-vacuum-suction-on-injection-molded-parts-300x131.webp 300w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Effect-of-vacuum-suction-on-injection-molded-parts-768x336.webp 768w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Effect-of-vacuum-suction-on-injection-molded-parts-18x8.webp 18w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><figcaption class=\"wp-element-caption\">Efeito da suc\u00e7\u00e3o a v\u00e1cuo em pe\u00e7as moldadas por inje\u00e7\u00e3o<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">A principal fun\u00e7\u00e3o do \u00e2ngulo de inclina\u00e7\u00e3o \u00e9 garantir que, quando a pe\u00e7a de pl\u00e1stico se separa do molde, j\u00e1 n\u00e3o entra em contacto com o molde, eliminando a fric\u00e7\u00e3o. Sem um \u00e2ngulo de inclina\u00e7\u00e3o, a pe\u00e7a de pl\u00e1stico passaria a ter uma fric\u00e7\u00e3o de deslizamento aquando da separa\u00e7\u00e3o e, no caso de superf\u00edcies de alto brilho, a cavidade poderia formar um v\u00e1cuo, dificultando a separa\u00e7\u00e3o completa da pe\u00e7a de pl\u00e1stico da cavidade. O pior cen\u00e1rio poss\u00edvel \u00e9 a ader\u00eancia \u00e0 cavidade, causando a deforma\u00e7\u00e3o da estrutura do n\u00facleo da pe\u00e7a de pl\u00e1stico durante a eje\u00e7\u00e3o.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-benefits-of-draft-angles\">Vantagens dos \u00e2ngulos de inclina\u00e7\u00e3o:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Os \u00e2ngulos de inclina\u00e7\u00e3o podem por vezes criar conflitos de interesse. Os moldadores de inje\u00e7\u00e3o preferem \u00e2ngulos de inclina\u00e7\u00e3o maiores para facilitar a eje\u00e7\u00e3o. Os fabricantes de moldes, por outro lado, consideram a maquina\u00e7\u00e3o de todas as superf\u00edcies da cavidade e do n\u00facleo com \u00e2ngulos uma tarefa dif\u00edcil, uma vez que complica caracter\u00edsticas simples que poderiam ser maquinadas com equipamento mais simples e custos mais baixos. Os projectistas de produtos podem considerar que os \u00e2ngulos de inclina\u00e7\u00e3o complicam o design da pe\u00e7a e alteram o seu aspeto.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Apesar destes desafios, \u00e9 crucial garantir que as pe\u00e7as moldadas cumprem os padr\u00f5es de qualidade exigidos. Sem \u00e2ngulos de inclina\u00e7\u00e3o, as hip\u00f3teses de problemas na moldagem por inje\u00e7\u00e3o aumentam, aumentando desnecessariamente os custos de produ\u00e7\u00e3o e prolongando os prazos de entrega. Para al\u00e9m de facilitar a remo\u00e7\u00e3o da pe\u00e7a do molde, os \u00e2ngulos de inclina\u00e7\u00e3o oferecem outras vantagens:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Reduzir a possibilidade de danificar as superf\u00edcies das pe\u00e7as durante a eje\u00e7\u00e3o.<\/li>\n\n\n\n<li>Assegurar a uniformidade e a integridade das texturas e dos acabamentos das superf\u00edcies.<\/li>\n\n\n\n<li>Minimizar a deforma\u00e7\u00e3o da pe\u00e7a devido \u00e0 resist\u00eancia \u00e0 eje\u00e7\u00e3o.<\/li>\n\n\n\n<li>Reduzir o desgaste das pe\u00e7as moldadas e diminuir a probabilidade de danos no molde.<\/li>\n\n\n\n<li>Reduzir o tempo total de arrefecimento, eliminando ou reduzindo a necessidade de configura\u00e7\u00f5es de eje\u00e7\u00e3o complexas.<\/li>\n\n\n\n<li>Redu\u00e7\u00e3o direta e indireta dos custos globais de produ\u00e7\u00e3o.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-principles-of-draft-angle-design\">Princ\u00edpios de conce\u00e7\u00e3o do \u00e2ngulo de inclina\u00e7\u00e3o<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Garantir uma eje\u00e7\u00e3o suave<\/li>\n\n\n\n<li>Manter a funcionalidade estrutural<\/li>\n\n\n\n<li>Satisfazer os requisitos est\u00e9ticos<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-ensuring-smooth-ejection\">Garantir uma eje\u00e7\u00e3o suave:<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-after-the-mold-opens-the-plastic-part-should-remain-on-the-core-side-to-facilitate-final-ejection\">Ap\u00f3s a abertura do molde, a pe\u00e7a de pl\u00e1stico deve permanecer no lado do n\u00facleo para facilitar a eje\u00e7\u00e3o final. <\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">A remo\u00e7\u00e3o de uma pe\u00e7a de pl\u00e1stico do molde envolve duas etapas:<\/p>\n\n\n\n<h5 class=\"wp-block-heading\" id=\"h-1-separates-from-the-cavity-wall\">1. Separa-se da parede da cavidade<\/h5>\n\n\n\n<p class=\"wp-block-paragraph\">A superf\u00edcie exterior da pe\u00e7a de pl\u00e1stico separa-se da parede da cavidade. Normalmente, n\u00e3o existem estruturas adicionais que ajudem a esta separa\u00e7\u00e3o, pelo que a fric\u00e7\u00e3o entre a superf\u00edcie exterior e a parede da cavidade deve ser minimizada.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-2-separates-from-the-core-wall\">2. Separa-se da parede do n\u00facleo<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">A superf\u00edcie interna da pe\u00e7a pl\u00e1stica separa-se da parede do n\u00facleo. O molde utiliza geralmente pinos ejectores, pinos angulares ou placas ejectoras para este efeito. A fric\u00e7\u00e3o entre a superf\u00edcie interna e o n\u00facleo deve ser maior do que a fric\u00e7\u00e3o entre a superf\u00edcie externa e a parede da cavidade para garantir que a pe\u00e7a permane\u00e7a no lado do n\u00facleo durante a abertura do molde.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Uma vez que o pl\u00e1stico tende a encolher em dire\u00e7\u00e3o ao n\u00facleo do molde, criando uma maior tens\u00e3o de encolhimento, o atrito entre a superf\u00edcie interna e o n\u00facleo ser\u00e1 maior do que entre a superf\u00edcie externa e a parede da cavidade, dada a rugosidade consistente e o \u00e2ngulo de inclina\u00e7\u00e3o. \u00c9 por este motivo que os machos s\u00e3o normalmente concebidos dentro do macho e as cavidades dentro da cavidade, com o lado complexo da pe\u00e7a de pl\u00e1stico no macho e o lado relativamente simples (lado da apar\u00eancia) na cavidade.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"523\" height=\"577\" src=\"https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Typically-CORE-and-Cavity-Designs.gif\" alt=\"Tipicamente CORE e desenhos de cavidades\" class=\"wp-image-19676\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">No entanto, existem excep\u00e7\u00f5es. Por exemplo, se a superf\u00edcie interna for uma superf\u00edcie de apar\u00eancia que n\u00e3o pode ter marcas de pinos ejectores, o n\u00facleo estaria na cavidade e a cavidade no n\u00facleo. Para evitar a ader\u00eancia \u00e0 cavidade, esta necessita de mecanismos de eje\u00e7\u00e3o auxiliares.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"585\" height=\"607\" src=\"https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Mold-design-for-products-that-do-not-allow-ejector-pin-marks-on-the-exterior-surface.gif\" alt=\"Conce\u00e7\u00e3o de moldes para produtos que n\u00e3o permitem marcas de pinos ejectores na superf\u00edcie exterior\" class=\"wp-image-19658\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Em alguns casos, as pe\u00e7as podem ter superf\u00edcies superiores e inferiores semelhantes, sem um lado de apar\u00eancia distinta. Para estas pe\u00e7as, se n\u00e3o existirem requisitos espec\u00edficos, o \u00e2ngulo de inclina\u00e7\u00e3o do n\u00facleo deve ser minimizado enquanto o \u00e2ngulo de inclina\u00e7\u00e3o da cavidade deve ser maximizado (dentro da toler\u00e2ncia da pe\u00e7a) para assegurar que a pe\u00e7a permanece no lado do molde em movimento, evitando a necessidade de mecanismos de eje\u00e7\u00e3o auxiliares na cavidade.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"396\" src=\"https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Symmetrical-parts.webp\" alt=\"Pe\u00e7as sim\u00e9tricas\" class=\"wp-image-19665\" srcset=\"https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Symmetrical-parts.webp 1000w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Symmetrical-parts-300x119.webp 300w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Symmetrical-parts-768x304.webp 768w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Symmetrical-parts-18x7.webp 18w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><figcaption class=\"wp-element-caption\">Pe\u00e7as sim\u00e9tricas<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Para as estruturas de conce\u00e7\u00e3o ajust\u00e1vel, o n\u00facleo pode ser modificado de modo a que 1\/3 fique na cavidade e 2\/3 no n\u00facleo, reduzindo o risco de ader\u00eancia \u00e0 cavidade.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"434\" src=\"https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Mold-design-that-can-be-optimized.webp\" alt=\"Conce\u00e7\u00e3o do molde que pode ser optimizada\" class=\"wp-image-19659\" srcset=\"https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Mold-design-that-can-be-optimized.webp 1000w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Mold-design-that-can-be-optimized-300x130.webp 300w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Mold-design-that-can-be-optimized-768x333.webp 768w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Mold-design-that-can-be-optimized-18x8.webp 18w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><figcaption class=\"wp-element-caption\">Conce\u00e7\u00e3o do molde que pode ser optimizada<\/figcaption><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-determining-the-draft-angle-size\">Determina\u00e7\u00e3o do tamanho do \u00e2ngulo de inclina\u00e7\u00e3o:<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">N\u00e3o existe uma norma unificada para a dimens\u00e3o do \u00e2ngulo de inclina\u00e7\u00e3o e os c\u00e1lculos te\u00f3ricos s\u00e3o um desafio devido \u00e0 complexidade dos modelos de fric\u00e7\u00e3o e \u00e0 varia\u00e7\u00e3o dos par\u00e2metros de inje\u00e7\u00e3o. A simula\u00e7\u00e3o pode fornecer valores de refer\u00eancia, mas consome muito tempo e recursos, muitas vezes para al\u00e9m das capacidades das oficinas de moldes. A experi\u00eancia pr\u00e1tica \u00e9 crucial e os engenheiros estruturais t\u00eam de compreender este aspeto para incorporar \u00e2ngulos de inclina\u00e7\u00e3o em estruturas cr\u00edticas durante o projeto, reduzindo a necessidade de modifica\u00e7\u00f5es subsequentes com base no feedback do engenheiro de moldes e evitando problemas desnecess\u00e1rios.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\" id=\"h-factors-influencing-draft-angle-size\">Factores que influenciam a dimens\u00e3o do \u00e2ngulo de inclina\u00e7\u00e3o:<\/h5>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong><em>Caracter\u00edsticas do material:<\/em><\/strong> Os pl\u00e1sticos duros requerem \u00e2ngulos de inclina\u00e7\u00e3o maiores do que os pl\u00e1sticos macios, que podem n\u00e3o necessitar de \u00e2ngulos de inclina\u00e7\u00e3o devido \u00e0 sua flexibilidade.<\/li>\n\n\n\n<li><strong><em>Taxa de retra\u00e7\u00e3o:<\/em><\/strong> Os pl\u00e1sticos com taxas de retra\u00e7\u00e3o mais elevadas agarram o n\u00facleo com mais for\u00e7a, exigindo \u00e2ngulos de inclina\u00e7\u00e3o maiores.<\/li>\n\n\n\n<li><strong><em>Coeficiente de fric\u00e7\u00e3o:<\/em><\/strong> Materiais com coeficientes de atrito mais baixos, como PA e <a href=\"https:\/\/firstmold.com\/pt\/guides\/pom-plastic\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>POM<\/strong><\/a>As superf\u00edcies mais \u00e1speras necessitam de \u00e2ngulos de inclina\u00e7\u00e3o mais pequenos. As superf\u00edcies mais \u00e1speras requerem \u00e2ngulos de inclina\u00e7\u00e3o maiores.<\/li>\n\n\n\n<li><strong><em>Espessura da parede:<\/em><\/strong> Paredes mais espessas exercem maior for\u00e7a sobre o n\u00facleo, necessitando de \u00e2ngulos de inclina\u00e7\u00e3o maiores.<\/li>\n\n\n\n<li><strong><em>Complexidade geom\u00e9trica:<\/em><\/strong> Formas complexas ou pe\u00e7as com muitos furos requerem \u00e2ngulos de inclina\u00e7\u00e3o maiores para evitar a necessidade de numerosos pinos ejectores, que devem ser dispostos simetricamente para evitar deforma\u00e7\u00f5es durante a eje\u00e7\u00e3o.<\/li>\n\n\n\n<li><strong><em>Transpar\u00eancia:<\/em><\/strong> As pe\u00e7as com requisitos \u00f3pticos necessitam de \u00e2ngulos de inclina\u00e7\u00e3o maiores.<\/li>\n<\/ul>\n\n\n\n<h5 class=\"wp-block-heading\" id=\"h-specific-draft-angle-ranges\">Gamas espec\u00edficas de \u00e2ngulos de inclina\u00e7\u00e3o:<\/h5>\n\n\n\n<p class=\"wp-block-paragraph\">A rela\u00e7\u00e3o geom\u00e9trica para os \u00e2ngulos de projeto \u00e9 tan\ud835\udf03=\ud835\udc4b\ud835\udc3btan<em>\u03b8<\/em>=<em>H<\/em><em>X<\/em>, em que \ud835\udf03<em>\u03b8<\/em> \u00e9 o \u00e2ngulo de inclina\u00e7\u00e3o, \ud835\udc3b<em>H<\/em> \u00e9 a altura da superf\u00edcie projectada, e \ud835\udc4b<em>X<\/em> \u00e9 a espessura reduzida da parede ou a conicidade.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"343\" src=\"https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/The-relationship-between-the-draft-angle-and-the-height-of-the-draft-surface.webp\" alt=\"A rela\u00e7\u00e3o entre o \u00e2ngulo de estiragem e a altura da superf\u00edcie de estiragem\" class=\"wp-image-19672\" srcset=\"https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/The-relationship-between-the-draft-angle-and-the-height-of-the-draft-surface.webp 1000w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/The-relationship-between-the-draft-angle-and-the-height-of-the-draft-surface-300x103.webp 300w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/The-relationship-between-the-draft-angle-and-the-height-of-the-draft-surface-768x263.webp 768w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/The-relationship-between-the-draft-angle-and-the-height-of-the-draft-surface-18x6.webp 18w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><figcaption class=\"wp-element-caption\">A rela\u00e7\u00e3o entre o \u00e2ngulo de estiragem e a altura da superf\u00edcie de estiragem<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Teoricamente, \u00e2ngulos de inclina\u00e7\u00e3o maiores facilitam a eje\u00e7\u00e3o, especialmente para \u00e1reas altas (profundas) e de superf\u00edcie grande que agarram firmemente o n\u00facleo ou a cavidade, exigindo \u00e2ngulos maiores para uma eje\u00e7\u00e3o suave.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">No entanto, um maior \ud835\udf03<em>\u03b8<\/em> significa um maior \ud835\udc4b<em>X<\/em>o que afecta a conce\u00e7\u00e3o:<\/p>\n\n\n\n<h6 class=\"wp-block-heading\" id=\"h-1-for-appearance-surfaces\">1. Para superf\u00edcies de aspeto<\/h6>\n\n\n\n<p class=\"wp-block-paragraph\">Um \ud835\udc4b maior<em>X<\/em> altera significativamente o desenho, podendo desviar-se do aspeto pretendido. Por conseguinte, o \u00e2ngulo de inclina\u00e7\u00e3o deve ser t\u00e3o grande quanto poss\u00edvel. Caso contr\u00e1rio, considere o seguinte:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>As superf\u00edcies de alto brilho requerem pelo menos uma corrente de ar de 1\u00b0 para evitar riscos; se poss\u00edvel, s\u00e3o prefer\u00edveis valores mais elevados.<\/li>\n\n\n\n<li>As superf\u00edcies texturizadas requerem pelo menos 3\u00b0 de inclina\u00e7\u00e3o, dependendo do tipo de textura e da profundidade. Geralmente, a profundidade de 0,001 mm requer 1\u00b0 a 1,5\u00b0 de inclina\u00e7\u00e3o.<\/li>\n\n\n\n<li>As superf\u00edcies rectas necessitam de um esbo\u00e7o que considere as linhas de parti\u00e7\u00e3o, que ser\u00e3o discutidas numa sec\u00e7\u00e3o subsequente.<\/li>\n<\/ul>\n\n\n\n<h6 class=\"wp-block-heading\" id=\"h-2-for-rib-surfaces\">2. Para superf\u00edcies de nervuras<\/h6>\n\n\n\n<p class=\"wp-block-paragraph\">Um \ud835\udc4b maior<em>X<\/em> reduz a largura superior \ud835\udc36<em>C<\/em>tornando a moldagem por inje\u00e7\u00e3o mais dif\u00edcil. As nervuras devem ser concebidas mais curtas, permitindo \u00e2ngulos de projeto maiores. Se tal for inevit\u00e1vel, assegurar que \ud835\udc4b\u22650,2<em>X<\/em>\u22650,2 e \ud835\udc36\u22650,6<em>C<\/em>\u22650.6.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"487\" src=\"https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/The-draft-angle-of-the-rib-surface.webp\" alt=\"O \u00e2ngulo de inclina\u00e7\u00e3o da superf\u00edcie da nervura\" class=\"wp-image-19666\" srcset=\"https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/The-draft-angle-of-the-rib-surface.webp 1000w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/The-draft-angle-of-the-rib-surface-300x146.webp 300w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/The-draft-angle-of-the-rib-surface-768x374.webp 768w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/The-draft-angle-of-the-rib-surface-18x9.webp 18w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><figcaption class=\"wp-element-caption\">O \u00e2ngulo de inclina\u00e7\u00e3o da superf\u00edcie da nervura<\/figcaption><\/figure>\n\n\n\n<h6 class=\"wp-block-heading\" id=\"h-3-for-screw-bosses\">3. Para bocais de parafuso<\/h6>\n\n\n\n<p class=\"wp-block-paragraph\">O furo interior requer precis\u00e3o dimensional. O \u00e2ngulo de sa\u00edda \u00e9 pequeno ou nulo, necessitando de pouca rugosidade ou polimento e de uma coloca\u00e7\u00e3o adequada do pino ejetor. A utiliza\u00e7\u00e3o de pinos de n\u00facleo para eje\u00e7\u00e3o evita a necessidade de um \u00e2ngulo de inclina\u00e7\u00e3o, enquanto os pinos ejectores normais requerem um \u00e2ngulo de inclina\u00e7\u00e3o. A altura das sali\u00eancias dos parafusos n\u00e3o deve ser excessiva, com \u00e2ngulos entre 0,5\u00b0 e 1,0\u00b0. O calado deve ser baseado em metade da profundidade de engate da rosca \ud835\udc3f<em>L<\/em> para assegurar um encaixe correto dos parafusos, evitando que fiquem soltos na parte superior e apertados na parte inferior, o que introduz tens\u00e3o.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"420\" src=\"https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/The-draft-angle-of-the-screw-boss-inner-hole.webp\" alt=\"O \u00e2ngulo de inclina\u00e7\u00e3o do furo interior da sali\u00eancia do parafuso\" class=\"wp-image-19667\" srcset=\"https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/The-draft-angle-of-the-screw-boss-inner-hole.webp 1000w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/The-draft-angle-of-the-screw-boss-inner-hole-300x126.webp 300w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/The-draft-angle-of-the-screw-boss-inner-hole-768x323.webp 768w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/The-draft-angle-of-the-screw-boss-inner-hole-18x8.webp 18w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><figcaption class=\"wp-element-caption\">O \u00e2ngulo de inclina\u00e7\u00e3o do furo interior da sali\u00eancia do parafuso<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">4. As outras superf\u00edcies internas utilizam um \u00e2ngulo de inclina\u00e7\u00e3o de 1\u00b0 como linha de base, ajustado com base na altura e na rugosidade, tendo em conta as altera\u00e7\u00f5es na espessura da parede para evitar <a href=\"https:\/\/firstmold.com\/pt\/tips\/injection-molding-defects\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>defeitos de moldagem<\/strong><\/a>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-ensuring-structural-functionality\">Garantir a funcionalidade estrutural:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Um produto completo \u00e9 composto por diferentes partes ligadas para formar um todo. O \u00e2ngulo de inclina\u00e7\u00e3o de uma pe\u00e7a afecta a pr\u00f3pria pe\u00e7a e as outras pe\u00e7as com as quais est\u00e1 ligada.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-1-impact-on-screw-support-surfaces\">1. Impacto nas superf\u00edcies de suporte dos parafusos: <\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">A aplica\u00e7\u00e3o de um \u00e2ngulo de inclina\u00e7\u00e3o facilita a eje\u00e7\u00e3o, mas faz com que a superf\u00edcie de apoio n\u00e3o seja perpendicular ao eixo do parafuso, podendo inclinar a pe\u00e7a fixa quando apertada.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"404\" src=\"https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/The-impact-on-the-screw-support-surface-after-the-part-is-drafted.webp\" alt=\"O impacto na superf\u00edcie de apoio do parafuso ap\u00f3s a elabora\u00e7\u00e3o da pe\u00e7a\" class=\"wp-image-19670\" srcset=\"https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/The-impact-on-the-screw-support-surface-after-the-part-is-drafted.webp 1000w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/The-impact-on-the-screw-support-surface-after-the-part-is-drafted-300x121.webp 300w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/The-impact-on-the-screw-support-surface-after-the-part-is-drafted-768x310.webp 768w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/The-impact-on-the-screw-support-surface-after-the-part-is-drafted-18x7.webp 18w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><figcaption class=\"wp-element-caption\">O impacto na superf\u00edcie de apoio do parafuso ap\u00f3s a elabora\u00e7\u00e3o da pe\u00e7a<\/figcaption><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-2-impact-on-interference-fits\">2. Impacto nos ajustes de interfer\u00eancia: <\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">As pe\u00e7as de pl\u00e1stico com correntes de ar correspondentes mant\u00eam a precis\u00e3o do ajuste por interfer\u00eancia. No entanto, as pe\u00e7as standard (por exemplo, rolamentos, veios) sem \u00e2ngulos de inclina\u00e7\u00e3o devem ser cuidadosamente consideradas. Por exemplo, um pequeno eixo de ajuste por interfer\u00eancia com um furo de coluna perde efic\u00e1cia se o furo tiver um \u00e2ngulo de inclina\u00e7\u00e3o. A utiliza\u00e7\u00e3o de um pino de n\u00facleo para eje\u00e7\u00e3o mant\u00e9m o furo sem um \u00e2ngulo de inclina\u00e7\u00e3o.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"503\" src=\"https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Optimization-design-of-the-interference-fit-between-the-small-shaft-and-the-boss-inner-hole.webp\" alt=\"Conce\u00e7\u00e3o optimizada do ajuste de interfer\u00eancia entre o veio pequeno e o orif\u00edcio interior da sali\u00eancia\" class=\"wp-image-19660\" srcset=\"https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Optimization-design-of-the-interference-fit-between-the-small-shaft-and-the-boss-inner-hole.webp 1000w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Optimization-design-of-the-interference-fit-between-the-small-shaft-and-the-boss-inner-hole-300x151.webp 300w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Optimization-design-of-the-interference-fit-between-the-small-shaft-and-the-boss-inner-hole-768x386.webp 768w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Optimization-design-of-the-interference-fit-between-the-small-shaft-and-the-boss-inner-hole-18x9.webp 18w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><figcaption class=\"wp-element-caption\">Conce\u00e7\u00e3o optimizada do ajuste de interfer\u00eancia entre o veio pequeno e o orif\u00edcio interior da sali\u00eancia<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"426\" src=\"https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/The-small-cross-sectional-area-of-the-rib-might-not-require-draf.webp\" alt=\"A pequena \u00e1rea da sec\u00e7\u00e3o transversal da nervura pode n\u00e3o necessitar de desenho\" class=\"wp-image-19673\" srcset=\"https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/The-small-cross-sectional-area-of-the-rib-might-not-require-draf.webp 1000w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/The-small-cross-sectional-area-of-the-rib-might-not-require-draf-300x128.webp 300w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/The-small-cross-sectional-area-of-the-rib-might-not-require-draf-768x327.webp 768w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/The-small-cross-sectional-area-of-the-rib-might-not-require-draf-18x8.webp 18w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><figcaption class=\"wp-element-caption\">A pequena \u00e1rea da sec\u00e7\u00e3o transversal da nervura pode n\u00e3o necessitar de desenho<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Para encaixes de interfer\u00eancia de rolamentos, os di\u00e2metros de furo grandes n\u00e3o podem atingir um \u00e2ngulo de inclina\u00e7\u00e3o zero com pinos de n\u00facleo. A eje\u00e7\u00e3o convencional requer um \u00e2ngulo de inclina\u00e7\u00e3o. Por exemplo, os furos de rolamentos grandes necessitam de um \u00e2ngulo de inclina\u00e7\u00e3o interno, enquanto as superf\u00edcies das nervuras com \u00e1reas pequenas podem n\u00e3o necessitar de um \u00e2ngulo de inclina\u00e7\u00e3o, permitindo a eje\u00e7\u00e3o for\u00e7ada.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-3-concentricity-requirements\">3. Requisitos de concentricidade: <\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Quando h\u00e1 requisitos de concentricidade para caracter\u00edsticas como d1, d2, d3 e d4, a linha de parti\u00e7\u00e3o deve estar em A-A, com d1 e d2 no mesmo n\u00facleo para garantir a precis\u00e3o do molde.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"581\" src=\"https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Parts-with-concentricity-requirements.webp\" alt=\"Pe\u00e7as com requisitos de concentricidade\" class=\"wp-image-19661\" srcset=\"https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Parts-with-concentricity-requirements.webp 1000w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Parts-with-concentricity-requirements-300x174.webp 300w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Parts-with-concentricity-requirements-768x446.webp 768w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Parts-with-concentricity-requirements-18x10.webp 18w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-4-effect-on-appearance-and-structure-of-parting-lines\">4. Efeito sobre o aspeto e a estrutura das linhas de separa\u00e7\u00e3o: <\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Os furos de passagem comuns s\u00e3o formados pelo contacto entre a cavidade e o n\u00facleo em diferentes pontos, criando linhas de separa\u00e7\u00e3o. O desenho do furo de passagem apresenta tr\u00eas <a href=\"https:\/\/firstmold.com\/pt\/guides\/shut-off-and-kiss-off\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>beijar<\/strong><\/a> gerando linhas de parti\u00e7\u00e3o onde a cavidade e o n\u00facleo se encontram.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"300\" src=\"https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Types-of-kiss-off.webp\" alt=\"Tipos de kiss off\" class=\"wp-image-19675\" srcset=\"https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Types-of-kiss-off.webp 1000w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Types-of-kiss-off-300x90.webp 300w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Types-of-kiss-off-768x230.webp 768w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Types-of-kiss-off-18x5.webp 18w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><figcaption class=\"wp-element-caption\">Tipos de beijo<\/figcaption><\/figure>\n\n\n\n<h5 class=\"wp-block-heading\" id=\"h-cavity-kisses-off-core\">A cavidade beija o n\u00facleo: <\/h5>\n\n\n\n<p class=\"wp-block-paragraph\">A parede interior do orif\u00edcio, depois de esbo\u00e7ada, permanece na cavidade. Este m\u00e9todo \u00e9 normalmente utilizado para orif\u00edcios com caracter\u00edsticas de apar\u00eancia, tais como orif\u00edcios de ventila\u00e7\u00e3o, orif\u00edcios para altifalantes e orif\u00edcios de interface externa. Estes orif\u00edcios geralmente n\u00e3o permitem que a linha de separa\u00e7\u00e3o ou o flash sejam vis\u00edveis na superf\u00edcie exterior e normalmente requerem chanfros, tornando este m\u00e9todo a escolha preferida. No entanto, \u00e9 importante notar que este m\u00e9todo comporta um risco de ader\u00eancia \u00e0 cavidade, especialmente quando existem muitos orif\u00edcios, tais como orif\u00edcios de ventila\u00e7\u00e3o ou de altifalantes. Por conseguinte, se o n\u00facleo n\u00e3o tiver uma estrutura suficiente para garantir que a pe\u00e7a se mant\u00e9m no n\u00facleo ao separar o n\u00facleo e a cavidade, \u00e9 aconselh\u00e1vel utilizar um \"kiss off each other\", em que a profundidade da cavidade \u00e9 inferior \u00e0 profundidade do n\u00facleo.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"557\" src=\"https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Common-ventilation-holes-and-headphone-holes.webp\" alt=\"Orif\u00edcios de ventila\u00e7\u00e3o comuns e orif\u00edcios para auscultadores\" class=\"wp-image-19653\" srcset=\"https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Common-ventilation-holes-and-headphone-holes.webp 1000w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Common-ventilation-holes-and-headphone-holes-300x167.webp 300w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Common-ventilation-holes-and-headphone-holes-768x428.webp 768w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Common-ventilation-holes-and-headphone-holes-18x10.webp 18w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><figcaption class=\"wp-element-caption\">Orif\u00edcios de ventila\u00e7\u00e3o comuns e orif\u00edcios para auscultadores<\/figcaption><\/figure>\n\n\n\n<h5 class=\"wp-block-heading\" id=\"h-core-kisses-off-cavity\">O n\u00facleo beija a cavidade: <\/h5>\n\n\n\n<p class=\"wp-block-paragraph\">A parede interna do furo, depois de esbo\u00e7ada, permanece no n\u00facleo. Este m\u00e9todo \u00e9 geralmente utilizado para furos que n\u00e3o aparecem sozinhos porque a linha de separa\u00e7\u00e3o (flash) est\u00e1 na superf\u00edcie exterior. Estes furos s\u00e3o normalmente utilizados em conjunto com outras pe\u00e7as, como por exemplo, com uma pe\u00e7a decorativa colocada no meio do furo. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Uma vez que o fulgor dos orif\u00edcios formados desta forma se encontra na superf\u00edcie exterior, se a pe\u00e7a decorativa estiver nivelada com o inv\u00f3lucro, quaisquer erros (devido a uma baixa precis\u00e3o do molde ou a uma estrutura inst\u00e1vel) podem fazer com que n\u00e3o fiquem verdadeiramente nivelados, resultando num degrau que pode riscar as m\u00e3os. Se ambas as pe\u00e7as forem chanfradas no \u00e2ngulo R no exterior, n\u00e3o riscar\u00e3o as m\u00e3os, mas o intervalo parecer\u00e1 maior. Se apenas a pe\u00e7a decorativa for chanfrada no \u00e2ngulo R e a sua superf\u00edcie for cerca de 0,2 mm mais alta do que a superf\u00edcie do inv\u00f3lucro, n\u00e3o riscar\u00e1 as m\u00e3os e a fenda n\u00e3o parecer\u00e1 maior.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"400\" src=\"https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Correct-mold-design-to-avoid-scratching.webp\" alt=\"Conce\u00e7\u00e3o correcta do molde para evitar riscos\" class=\"wp-image-19654\" srcset=\"https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Correct-mold-design-to-avoid-scratching.webp 1000w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Correct-mold-design-to-avoid-scratching-300x120.webp 300w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Correct-mold-design-to-avoid-scratching-768x307.webp 768w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Correct-mold-design-to-avoid-scratching-18x7.webp 18w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><figcaption class=\"wp-element-caption\">Conce\u00e7\u00e3o correcta do molde para evitar riscos<\/figcaption><\/figure>\n\n\n\n<h5 class=\"wp-block-heading\" id=\"h-core-and-cavity-kisses-off-each-other\">Beijos de n\u00facleo e de cavidade um do outro:<\/h5>\n\n\n\n<p class=\"wp-block-paragraph\">A parede interna do furo, depois de esbo\u00e7ada, permanece tanto no n\u00facleo como na cavidade. Este m\u00e9todo \u00e9 utilizado n\u00e3o s\u00f3 para resolver o risco de ader\u00eancia \u00e0 cavidade, como mencionado anteriormente, mas tamb\u00e9m em situa\u00e7\u00f5es em que o furo \u00e9 bastante profundo. Ap\u00f3s a estiragem, os di\u00e2metros das extremidades superior e inferior do furo podem diferir significativamente. Para evitar esta situa\u00e7\u00e3o, o n\u00facleo e a cavidade s\u00e3o normalmente utilizados para formar o furo, o que \u00e9 comummente aplicado em estruturas de bot\u00f5es, como mostra o diagrama abaixo.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"700\" src=\"https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Structure-of-cavity-and-core-kiss-off-each-other.webp\" alt=\"A estrutura da cavidade e do n\u00facleo beija-se mutuamente\" class=\"wp-image-19664\" srcset=\"https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Structure-of-cavity-and-core-kiss-off-each-other.webp 1000w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Structure-of-cavity-and-core-kiss-off-each-other-300x210.webp 300w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Structure-of-cavity-and-core-kiss-off-each-other-768x538.webp 768w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Structure-of-cavity-and-core-kiss-off-each-other-18x12.webp 18w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><figcaption class=\"wp-element-caption\">A estrutura da cavidade e do n\u00facleo beija-se mutuamente<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-ensuring-aesthetic-requirements\">Garantir os requisitos est\u00e9ticos:<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A necessidade de \u00e2ngulos de inclina\u00e7\u00e3o para as pe\u00e7as de apar\u00eancia depende principalmente do m\u00e9todo de desmontagem das pe\u00e7as de apar\u00eancia e do m\u00e9todo de eje\u00e7\u00e3o correspondente. Os projectistas com requisitos de apar\u00eancia rigorosos ter\u00e3o em considera\u00e7\u00e3o o estado do projeto e o m\u00e9todo geral de desmontagem nas fases iniciais do projeto. Isto porque, quando os engenheiros de estruturas adicionam \u00e2ngulos de inclina\u00e7\u00e3o ao aspeto mais tarde, isso ir\u00e1 afetar o aspeto at\u00e9 certo ponto. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Naturalmente, este impacto tem de ser reconhecido pelo projetista da apar\u00eancia antes de se avan\u00e7ar para o passo seguinte. Caso contr\u00e1rio, o engenheiro de estruturas deve considerar outros m\u00e9todos de eje\u00e7\u00e3o, preservando o aspeto original. Este processo envolve uma comunica\u00e7\u00e3o e coopera\u00e7\u00e3o constantes entre os engenheiros de estruturas e os projectistas de apar\u00eancia. Diferentes empresas podem dar uma \u00eanfase diferente \u00e0 estrutura e ao aspeto, o que leva a diferen\u00e7as na qualidade e no custo do produto.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"448\" src=\"https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/The-evolution-of-the-razors-appearance.webp\" alt=\"A evolu\u00e7\u00e3o do aspeto da l\u00e2mina de barbear\" class=\"wp-image-19669\" srcset=\"https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/The-evolution-of-the-razors-appearance.webp 800w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/The-evolution-of-the-razors-appearance-300x168.webp 300w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/The-evolution-of-the-razors-appearance-768x430.webp 768w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/The-evolution-of-the-razors-appearance-18x10.webp 18w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\">A evolu\u00e7\u00e3o do aspeto da l\u00e2mina de barbear<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">As imagens acima ilustram a evolu\u00e7\u00e3o dos designs t\u00edpicos dos corpos principais das m\u00e1quinas de barbear:<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-first-design\">Primeira conce\u00e7\u00e3o: <\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Este \u00e9 um projeto inicial com um casco superior e um inferior. A linha de separa\u00e7\u00e3o entre os cascos superior e inferior requer \u00e2ngulos de tra\u00e7\u00e3o. Ap\u00f3s a aplica\u00e7\u00e3o dos \u00e2ngulos de inclina\u00e7\u00e3o, a jun\u00e7\u00e3o entre as conchas superior e inferior muda ligeiramente e deixa de ser tangencial, pelo que s\u00e3o frequentemente adicionadas linhas decorativas para reduzir as arestas vivas que podem causar desconforto.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-second-design\">Segunda conce\u00e7\u00e3o: <\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Para resolver os problemas do primeiro projeto, foi acrescentada uma concha interm\u00e9dia, que tamb\u00e9m serve como elemento decorativo. Isto melhora significativamente o aspeto geral, mas acresce o custo de uma pe\u00e7a adicional.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-third-design\">Terceira conce\u00e7\u00e3o: <\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Trata-se de um estilo minimalista com um corpo principal de uma s\u00f3 pe\u00e7a e um aspeto cil\u00edndrico. N\u00e3o tem \u00e2ngulos de inclina\u00e7\u00e3o nos lados nem aberturas, preservando completamente o design original. Esta \u00e9 uma abordagem de design atual muito popular.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tend\u00eancias semelhantes aplicam-se aos secadores de cabelo, passando dos tradicionais aos modernos, com designs mais simples, com menos pe\u00e7as e menos impacto na apar\u00eancia a partir de \u00e2ngulos de projeto.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"326\" src=\"https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/The-evolution-of-the-hairdryers-appearance.webp\" alt=\"A evolu\u00e7\u00e3o do aspeto do secador de cabelo\" class=\"wp-image-19668\" srcset=\"https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/The-evolution-of-the-hairdryers-appearance.webp 800w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/The-evolution-of-the-hairdryers-appearance-300x122.webp 300w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/The-evolution-of-the-hairdryers-appearance-768x313.webp 768w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/The-evolution-of-the-hairdryers-appearance-18x7.webp 18w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\">A evolu\u00e7\u00e3o do aspeto do secador de cabelo<\/figcaption><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-zero-draft-angle-molds\">Moldes de \u00e2ngulo de inclina\u00e7\u00e3o zero:<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">Alguns produtos de aspeto cil\u00edndrico evitam os \u00e2ngulos de inclina\u00e7\u00e3o para manter a est\u00e9tica. Se o inv\u00f3lucro for met\u00e1lico, a extrus\u00e3o de alum\u00ednio permite um \u00e2ngulo de inclina\u00e7\u00e3o nulo nas paredes interior e exterior. No caso de pe\u00e7as de pl\u00e1stico, a parede interior continua a necessitar de um \u00e2ngulo de inclina\u00e7\u00e3o, sendo a parede exterior moldada com barras deslizantes laterais, deixando linhas de separa\u00e7\u00e3o que podem ser polidas e pintadas para as ocultar.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"377\" src=\"https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Cylindrical-shaped-appearance-product.webp\" alt=\"Produto de aspeto cil\u00edndrico\" class=\"wp-image-19655\" srcset=\"https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Cylindrical-shaped-appearance-product.webp 800w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Cylindrical-shaped-appearance-product-300x141.webp 300w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Cylindrical-shaped-appearance-product-768x362.webp 768w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Cylindrical-shaped-appearance-product-18x8.webp 18w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\">Produto de aspeto cil\u00edndrico<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"700\" src=\"https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Cylindrical-shaped-products-produce-weld-lines-by-means-of-sliders.webp\" alt=\"Os produtos de forma cil\u00edndrica produzem linhas de soldadura por meio de corredi\u00e7as\" class=\"wp-image-19656\" srcset=\"https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Cylindrical-shaped-products-produce-weld-lines-by-means-of-sliders.webp 1000w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Cylindrical-shaped-products-produce-weld-lines-by-means-of-sliders-300x210.webp 300w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Cylindrical-shaped-products-produce-weld-lines-by-means-of-sliders-768x538.webp 768w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Cylindrical-shaped-products-produce-weld-lines-by-means-of-sliders-18x12.webp 18w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><figcaption class=\"wp-element-caption\">Os produtos de forma cil\u00edndrica produzem linhas de soldadura por meio de corredi\u00e7as<\/figcaption><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"h-apple-pencil-1st-generation-zero-draft-angle\">L\u00e1pis Apple de 1\u00aa gera\u00e7\u00e3o \u00c2ngulo de inclina\u00e7\u00e3o zero:<\/h4>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"170\" src=\"https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Apple-pencil.webp\" alt=\"L\u00e1pis da Apple\" class=\"wp-image-19652\" srcset=\"https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Apple-pencil.webp 1000w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Apple-pencil-300x51.webp 300w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Apple-pencil-768x131.webp 768w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Apple-pencil-18x3.webp 18w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><figcaption class=\"wp-element-caption\">L\u00e1pis da Apple<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">O corpo do Apple Pencil de 1\u00aa gera\u00e7\u00e3o \u00e9 feito de pl\u00e1stico e apresenta uma sec\u00e7\u00e3o longa com \u00e2ngulo de inclina\u00e7\u00e3o zero nas paredes interior e exterior. Embora as solu\u00e7\u00f5es mencionadas anteriormente possam ser utilizadas para ejetar a parede exterior com \u00e2ngulo de inclina\u00e7\u00e3o zero, a eje\u00e7\u00e3o da parede interior com \u00e2ngulo de inclina\u00e7\u00e3o zero \u00e9 mais dif\u00edcil.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">De acordo com uma patente registada pela Apple, a solu\u00e7\u00e3o passa pela utiliza\u00e7\u00e3o de um n\u00facleo de molde flex\u00edvel composto por duas partes: uma manga met\u00e1lica flex\u00edvel com ranhuras (FIG. 3) e um n\u00facleo interno met\u00e1lico (FIG. 5). Esta manga flex\u00edvel pode deformar-se elasticamente em determinadas condi\u00e7\u00f5es, permitindo-lhe ser retirada da cavidade cil\u00edndrica do Apple Pencil.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"731\" src=\"https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Structure-of-apple-pencil-01.webp\" alt=\"Estrutura do l\u00e1pis de ma\u00e7\u00e3 01\" class=\"wp-image-19662\" srcset=\"https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Structure-of-apple-pencil-01.webp 800w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Structure-of-apple-pencil-01-300x274.webp 300w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Structure-of-apple-pencil-01-768x702.webp 768w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Structure-of-apple-pencil-01-13x12.webp 13w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\">Estrutura do l\u00e1pis de ma\u00e7\u00e3 01<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"554\" src=\"https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Structure-of-apple-pencil-02.webp\" alt=\"Estrutura do l\u00e1pis de ma\u00e7\u00e3 01\" class=\"wp-image-19663\" srcset=\"https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Structure-of-apple-pencil-02.webp 800w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Structure-of-apple-pencil-02-300x208.webp 300w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Structure-of-apple-pencil-02-768x532.webp 768w, https:\/\/firstmold.com\/wp-content\/uploads\/2024\/05\/Structure-of-apple-pencil-02-18x12.webp 18w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\">Estrutura do Apple Pencil 01<\/figcaption><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">Aplica\u00e7\u00e3o espec\u00edfica:<\/h4>\n\n\n\n<p class=\"wp-block-paragraph\">A manga met\u00e1lica \u00e9 feita de metal de baixo atrito e polida na superf\u00edcie exterior para reduzir o atrito com o pl\u00e1stico. A manga tem uma ranhura cont\u00ednua, proporcionando-lhe um espa\u00e7o de deforma\u00e7\u00e3o el\u00e1stica. O n\u00facleo interno de metal correspondente tem uma chave elevada e, em conjunto, formam o n\u00facleo do molde (FIG. 6).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Durante o processo de inje\u00e7\u00e3o, o n\u00facleo do molde \u00e9 primeiro colocado no interior do molde e, em seguida, o molde exterior \u00e9 fechado (FIG. 9) para completar a moldagem por inje\u00e7\u00e3o. Ap\u00f3s a moldagem, o n\u00facleo met\u00e1lico interno \u00e9 primeiro removido, criando espa\u00e7o para que a manga flex\u00edvel se deforme elasticamente para dentro. Esta contra\u00e7\u00e3o para o interior faz com que a manga met\u00e1lica se solte da parede interior da pe\u00e7a de pl\u00e1stico at\u00e9 certo ponto, facilitando a retirada da manga da parede interior da pe\u00e7a de pl\u00e1stico (a patente utiliza um exemplo de prisma triangular para ilustrar o cilindro de pl\u00e1stico cil\u00edndrico do Apple Pencil).<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-summary\">Resumo:<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Por \u00faltimo, voltamos a salientar a import\u00e2ncia do \u00e2ngulo de inclina\u00e7\u00e3o. A conce\u00e7\u00e3o correcta do \u00e2ngulo de inclina\u00e7\u00e3o tem um impacto crucial na qualidade do produto e na efici\u00eancia da produ\u00e7\u00e3o. Ao compreender os efeitos dos \u00e2ngulos de inclina\u00e7\u00e3o nos produtos e como aplic\u00e1-los corretamente no projeto do molde, podemos melhorar o trabalho de projeto do molde, melhorar a qualidade do produto e aumentar a efici\u00eancia da produ\u00e7\u00e3o.<\/p>","protected":false},"excerpt":{"rendered":"<p>A compreens\u00e3o mais abrangente dos tipos, benef\u00edcios e princ\u00edpios b\u00e1sicos dos \u00e2ngulos de inclina\u00e7\u00e3o no projeto de moldes.<\/p>","protected":false},"author":5,"featured_media":31938,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[47],"tags":[51,61],"class_list":["post-19650","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-guides","tag-injection-molding","tag-mold-design"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.3 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