{"id":509,"date":"2018-10-16T21:45:19","date_gmt":"2018-10-16T13:45:19","guid":{"rendered":"https:\/\/plasticmoldco.com\/?p=509"},"modified":"2018-10-20T01:25:01","modified_gmt":"2018-10-19T17:25:01","slug":"what-is-injection-molding","status":"publish","type":"post","link":"https:\/\/www.plasticmoldco.com\/es\/2018\/10\/16\/que-es-el-moldeo-por-inyeccion\/","title":{"rendered":"qu\u00e9 es el moldeo por inyecci\u00f3n"},"content":{"rendered":"<p>[et_pb_section bb_built=\"1\u2033 fullwidth=\"off\" specialty=\"off\"][et_pb_row][et_pb_column type=\"4_4\u2033][et_pb_text _builder_version=\"3.10.2\u2033 border_width_all=\"3px\" border_color_all=\"#e5e5e5\u2033]<\/p>\n<h1>qu\u00e9 es el moldeo por inyecci\u00f3n<\/h1>\n<p>En la pel\u00edcula de 1967 El graduado, el Sr. Robinson daba un \u00fanico consejo profesional a Benjamin Braddock, el personaje interpretado por Dustin Hoffman: \"<strong>Pl\u00e1sticos<\/strong>.\" Parece que Robinson ten\u00eda raz\u00f3n. La ciencia industrial que transforma las resinas pl\u00e1sticas en objetos \u00fatiles mediante el proceso de moldeo por inyecci\u00f3n ha tenido una enorme repercusi\u00f3n en la industria y en la mayor parte de nuestras vidas.<\/p>\n<p>En\u00a0<strong>proceso de moldeo por inyecci\u00f3n<\/strong>\u00a0se dise\u00f1\u00f3 por primera vez en la d\u00e9cada de 1930 y se bas\u00f3 originalmente en dise\u00f1os de fundici\u00f3n a presi\u00f3n de metal. El moldeo por inyecci\u00f3n ofrece muchas ventajas frente a otros m\u00e9todos de fabricaci\u00f3n, como las m\u00ednimas p\u00e9rdidas por desechos (ya que las piezas sobrantes pueden fundirse y reciclarse) y los m\u00ednimos requisitos de acabado. El moldeo por inyecci\u00f3n difiere de la fundici\u00f3n a presi\u00f3n de metales en que los metales fundidos pueden simplemente verterse; las resinas pl\u00e1sticas deben inyectarse con fuerza.<\/p>\n<p>El proceso utiliza grandes\u00a0<strong>m\u00e1quinas de moldeo por inyecci\u00f3n<\/strong>que hacen avanzar las resinas a trav\u00e9s de seis procesos principales para producir desde piezas de ordenador hasta ara\u00f1as de Halloween de pl\u00e1stico. Aunque una m\u00e1quina de moldeo por inyecci\u00f3n es un equipo complejo, consta de dos elementos b\u00e1sicos, la unidad de inyecci\u00f3n y la unidad de sujeci\u00f3n.<\/p>\n<p>El proceso comienza con un molde, que se sujeta a presi\u00f3n para acomodar el proceso de inyecci\u00f3n y enfriamiento. A continuaci\u00f3n, las resinas granuladas se introducen en la m\u00e1quina, seguidas de los colorantes adecuados. A continuaci\u00f3n, las resinas caen en un barril de inyecci\u00f3n, donde se calientan hasta el punto de fusi\u00f3n y se inyectan en el molde mediante un tornillo o un dispositivo de apisonamiento.<\/p>\n<p>A continuaci\u00f3n viene la fase de llenado, en la que los pl\u00e1sticos fundidos se introducen en el molde y se aplica presi\u00f3n hidr\u00e1ulica o mec\u00e1nica para asegurarse de que todas las cavidades del molde est\u00e1n llenas. A continuaci\u00f3n, se deja enfriar el pl\u00e1stico dentro del molde, que se abre separando las dos mitades del molde. En el \u00faltimo paso, la pieza de pl\u00e1stico se expulsa del molde con pasadores de expulsi\u00f3n. La pieza terminada puede contener trozos extra\u00f1os denominados correderas, que se recortan y reciclan. Todo el proceso es c\u00edclico, con tiempos de ciclo que oscilan entre diez y 100 segundos, dependiendo del tiempo de enfriamiento necesario.<\/p>\n<p>El proceso de moldeo por inyecci\u00f3n requiere algunos c\u00e1lculos complejos. Cada tipo de resina tiene un valor de contracci\u00f3n que debe tenerse en cuenta, y el molde debe compensarlo. Si este valor no se determina con precisi\u00f3n, el producto final tendr\u00e1 un tama\u00f1o incorrecto o puede contener defectos. Normalmente, esto se compensa llenando primero el molde con resina, manteni\u00e9ndola bajo presi\u00f3n y a\u00f1adiendo despu\u00e9s m\u00e1s resina para compensar la contracci\u00f3n. Otras complicaciones pueden ser piezas quemadas debido a una temperatura de fusi\u00f3n demasiado alta, alabeo debido a una temperatura superficial desigual o llenado incompleto debido a una carrera de inyecci\u00f3n demasiado lenta.<\/p>\n<p><strong>Moldes de inyecci\u00f3n<\/strong>\u00a0pueden resultar sorprendentemente caros, a veces m\u00e1s de $100.000. Sin embargo, si la cantidad de piezas deseada es lo suficientemente grande, el coste del molde pasa a ser relativamente insignificante y las piezas de pl\u00e1stico resultantes tienen un precio muy razonable. Algunos moldes se fabrican con m\u00e1s de una cavidad; estos moldes multicavidad cuestan m\u00e1s que sus hom\u00f3logos de una sola cavidad, pero debido a la mayor eficacia de la producci\u00f3n, el coste por pieza se minimiza.<\/p>\n<p><strong>Moldeo por inyecci\u00f3n<\/strong>\u00a0puede utilizarse con una gran variedad de resinas pl\u00e1sticas. Las resinas m\u00e1s populares para este tipo de moldeo son: polipropileno (PP), polietileno (PE) y ABS. Cada resina tiene sus propias ventajas e inconvenientes y se eligen en funci\u00f3n de las caracter\u00edsticas deseadas de la pieza final.<\/p>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section]<\/p>","protected":false},"excerpt":{"rendered":"<p><div class=\"et_pb_row et_pb_row_0 et_pb_row_empty\">\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t<\/div> qu\u00e9 es el moldeo por inyecci\u00f3n En la pel\u00edcula de 1967 El graduado, el Sr. Robinson ofreci\u00f3 un \u00fanico consejo profesional a Benjamin Braddock, el personaje interpretado por Dustin Hoffman: \u201cPl\u00e1sticos\u201d. Parece que Robinson ten\u00eda raz\u00f3n. La ciencia industrial de transformar resinas pl\u00e1sticas en cosas \u00fatiles mediante el proceso de moldeo por inyecci\u00f3n, ha [...]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[13,9],"tags":[],"class_list":["post-509","post","type-post","status-publish","format-standard","hentry","category-mold-indstry-blogy-1","category-news2"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>what is injection molding - Plastic Mold | China Mold Maker<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.plasticmoldco.com\/es\/2018\/10\/16\/que-es-el-moldeo-por-inyeccion\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"what is injection molding - Plastic Mold | China Mold Maker\" \/>\n<meta property=\"og:description\" content=\"what is injection molding In 1967 film The Graduate, Mr. Robinson offered a single word of career advice to Benjamin Braddock, the character played by Dustin Hoffman: \u201cPlastics.\u201d It would seem that Robinson had the right idea. 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