{"id":1358,"date":"2025-05-23T14:14:16","date_gmt":"2025-05-23T06:14:16","guid":{"rendered":"https:\/\/old.jbrplas.com\/?p=1358"},"modified":"2025-05-23T14:14:18","modified_gmt":"2025-05-23T06:14:18","slug":"basics-of-plastic-mold-knowledge","status":"publish","type":"post","link":"https:\/\/old.jbrplas.com\/ro\/basics-of-plastic-mold-knowledge\/","title":{"rendered":"Bazele cunoa\u0219terii matri\u021belor din plastic"},"content":{"rendered":"<h4 class=\"wp-block-heading\" id=\"i-definition-of-mold\"><strong>I. Defini\u021bia mucegaiului<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Mold<\/strong>: Un instrument care modeleaz\u0103 materialele \u00een produse cu dimensiuni specifice. Determin\u0103 calitatea \u0219i costul de fabrica\u021bie, servind drept instrument de baz\u0103 pentru produc\u021bia de mas\u0103, adesea denumit \"mama produselor\".<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"ii-overview-of-plastic-injection-molds\"><strong>II. Prezentare general\u0103 a matri\u021belor de injec\u021bie din plastic<\/strong><\/h4>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li><strong>Principiul de func\u021bionare<\/strong>\n<ul class=\"wp-block-list\">\n<li><strong>Procesul de injectare<\/strong>: Str\u00e2ngere \u2192 Plasticizare (alimentare, decompresie) \u2192 Injectare (umplere, ambalare) \u2192 R\u0103cire \u2192 Ejectare.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Tendin\u021be de dezvoltare<\/strong>\n<ul class=\"wp-block-list\">\n<li>Matri\u021be mai mari, cerin\u021be de precizie mai ridicate, matri\u021be compozite multifunc\u021bionale.<\/li>\n\n\n\n<li>Utilizarea crescut\u0103 a sistemelor cu canal cald, standardizarea componentelor \u0219i integrarea tehnologic\u0103 avansat\u0103.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"iii-classification-and-applications-of-plastic-molds\"><strong>III. Clasificarea \u0219i aplica\u021biile matri\u021belor din plastic<\/strong><\/h4>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li><strong>Mucegai cu dou\u0103 pl\u0103ci<\/strong>\n<ul class=\"wp-block-list\">\n<li><strong>Structura<\/strong>: Separarea direct\u0103 a matri\u021belor masculine \u0219i feminine. Potrivit pentru por\u021bi directe cu o singur\u0103 cavitate sau por\u021bi de margine cu mai multe cavit\u0103\u021bi.<\/li>\n\n\n\n<li><strong>Aplica\u021bii<\/strong>: Produse simple, de exemplu, piese cu por\u021bi cu un singur punct.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Matri\u021b\u0103 cu trei pl\u0103ci<\/strong>\n<ul class=\"wp-block-list\">\n<li><strong>Structura<\/strong>: Adaug\u0103 o plac\u0103 de alergare pentru separarea automat\u0103 a por\u021bii. Potrivit pentru por\u021bi cu puncte multiple (por\u021bi cu puncte fixe).<\/li>\n\n\n\n<li><strong>Aplica\u021bii<\/strong>: Produse complexe care necesit\u0103 t\u0103ierea automat\u0103 a por\u021bii.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Mucegai cu dou\u0103 pl\u0103ci \u0219i jum\u0103tate<\/strong>\n<ul class=\"wp-block-list\">\n<li><strong>Caracteristici<\/strong>: Sistem de canal \u00eenc\u0103lzit pentru a men\u021bine plasticul topit, reduc\u00e2nd de\u0219eurile \u0219i presiunea de injectare.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Sistemul Hot Runner<\/strong>\n<ul class=\"wp-block-list\">\n<li><strong>Avantaje<\/strong>:\n<ul class=\"wp-block-list\">\n<li>Scurteaz\u0103 durata ciclului, \u00eembun\u0103t\u0103\u021be\u0219te eficien\u021ba;<\/li>\n\n\n\n<li>Reduce risipa de materiale;<\/li>\n\n\n\n<li>Scade presiunea de injectare, \u00eembun\u0103t\u0103\u021be\u0219te calitatea produsului.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Componente<\/strong>: Duze fierbin\u021bi, colector, regulator de temperatur\u0103, secven\u021biator de supape.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<div class=\"wp-block-greenshift-blocks-image gspb_image gspb_image-id-gsbp-7e44e40\" id=\"gspb_image-id-gsbp-7e44e40\"><img decoding=\"async\" src=\"https:\/\/old.jbrplas.com\/wp-content\/uploads\/2025\/05\/mold.webp\" data-src=\"\" alt=\"\" loading=\"lazy\" width=\"543\" height=\"651\"\/><\/div>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"iv-key-components-functions-and-layout\"><strong>IV. Componente cheie: Func\u021bii \u0219i configura\u021bie<\/strong><\/h4>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li><strong>Pini de ghidare (G.P.)<\/strong>\n<ul class=\"wp-block-list\">\n<li><strong>Func\u021bia<\/strong>: Asigura\u021bi alinierea precis\u0103 a matri\u021belor masculine \u0219i feminine pentru a preveni deteriorarea miezului.<\/li>\n\n\n\n<li><strong>Plasament<\/strong>: Simetric la patru col\u021buri; buc\u0219e de ghidare pe matri\u021ba femel\u0103, pini pe matri\u021ba masculin\u0103; include fante de aerisire.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Pini de ghidare a ejectorului (E.G.P)<\/strong>\n<ul class=\"wp-block-list\">\n<li><strong>Func\u021bia<\/strong>: Ghidarea mi\u0219c\u0103rii pl\u0103cilor de ejec\u021bie.<\/li>\n\n\n\n<li><strong>Cantitate<\/strong>: De obicei, 4 (2 pentru matri\u021be mici), plasate l\u00e2ng\u0103 \u0219tifturile de \u00eentoarcere (R.P.).<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Piloni de sprijin (S.P.)<\/strong>\n<ul class=\"wp-block-list\">\n<li><strong>Func\u021bia<\/strong>: \u00cent\u0103ri\u021bi rezisten\u021ba pl\u0103cii de mucegai masculin, preveni\u021bi deformarea pl\u0103cii de ejec\u021bie.<\/li>\n\n\n\n<li><strong>Plasament<\/strong>: \u00cen apropierea zonelor de injec\u021bie de \u00eenalt\u0103 presiune, evit\u00e2nd interferen\u021ba cu alte componente.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Pini de oprire (STP)<\/strong>\n<ul class=\"wp-block-list\">\n<li><strong>Func\u021bia<\/strong>: Alinia\u021bi duza de injec\u021bie cu buc\u0219a de injec\u021bie, reduc\u00e2nd timpul de configurare.<\/li>\n\n\n\n<li><strong>Specifica\u021bii<\/strong>: Diametru \u03a6100 (forme mici) p\u00e2n\u0103 la \u03a6150 (forme mari), cu toleran\u021b\u0103 (-0,10\/-0,30 mm).<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Inel de localizare \u0219i buc\u0219\u0103 Sprue<\/strong>\n<ul class=\"wp-block-list\">\n<li><strong>Inel de localizare<\/strong>: Asigur\u0103 alinierea duzei cu canalul de turnare.<\/li>\n\n\n\n<li><strong>Buc\u0219\u0103 pentru tubulatur\u0103<\/strong>: Tratate termic pentru rezisten\u021b\u0103 la uzur\u0103; patinele de rulare necesit\u0103 unghiuri de tragere.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Tije mici de tragere \u0219i \u00eencuietori pentru matri\u021be<\/strong>\n<ul class=\"wp-block-list\">\n<li><strong>Tije de tragere mici<\/strong>: Utilizeaz\u0103 frecare de nylon pentru blocare, potrivite pentru matri\u021be cu volum redus sau temperatur\u0103 sc\u0103zut\u0103.<\/li>\n\n\n\n<li><strong>\u00cencuietoare de mucegai<\/strong>: Include tipuri de r\u0103\u0219in\u0103 (durabilitate ridicat\u0103) \u0219i tipuri mecanice pentru matri\u021be mari sau de precizie.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"v-injection-machine-selection-and-guidelines\"><strong>V. Selectarea ma\u0219inii de injec\u021bie \u0219i orient\u0103ri<\/strong><\/h4>\n\n\n\n<div class=\"wp-block-greenshift-blocks-image gspb_image gspb_image-id-gsbp-21fb5c2\" id=\"gspb_image-id-gsbp-21fb5c2\"><img decoding=\"async\" src=\"https:\/\/old.jbrplas.com\/wp-content\/uploads\/2025\/05\/injection-molding-1.gif\" data-src=\"\" alt=\"\" loading=\"lazy\" width=\"556\" height=\"208\"\/><\/div>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li><strong>Calcularea for\u021bei de str\u00e2ngere<\/strong>\n<ul class=\"wp-block-list\">\n<li><strong>Formula<\/strong>: For\u021ba de str\u00e2ngere (T) = 330 kg\/cm2 \u00d7 lungimea produsului (cm) \u00d7 l\u0103\u021bimea produsului (cm) \u00d7 1,5 \/ 1000<\/li>\n\n\n\n<li><strong>Selec\u021bie<\/strong>: Tonajul ma\u0219inii trebuie s\u0103 dep\u0103\u0219easc\u0103 valoarea calculat\u0103; asigura\u021bi compatibilitatea cu grosimea matri\u021bei \u0219i distan\u021ba dintre bare.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>G\u0103uri Knockout (KO) \u0219i g\u0103uri de ridicare<\/strong>\n<ul class=\"wp-block-list\">\n<li><strong>G\u0103uri KO<\/strong>: Trebuie s\u0103 se alinieze cu buc\u0219a de injec\u021bie; nu este permis\u0103 nicio abatere pozi\u021bional\u0103.<\/li>\n\n\n\n<li><strong>G\u0103uri de ridicare<\/strong>: Dimensionate \u00een func\u021bie de greutatea matri\u021bei; matri\u021bele mari necesit\u0103 g\u0103uri pe toate laturile.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"vi-additional-notes\"><strong>VI. Note suplimentare<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u00centre\u021binere<\/strong>: Inspecta\u021bi periodic uzura pinilor de ghidare, a pinilor de ejec\u021bie etc.<\/li>\n\n\n\n<li><strong>Controlul canalelor fierbin\u021bi<\/strong>: Monitorizarea strict\u0103 a temperaturii pentru a preveni \u00eenfundarea sau degradarea materialului.<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>I. Defini\u021bia matri\u021bei II. Prezentare general\u0103 a matri\u021belor de injec\u021bie din plastic III. Clasificarea \u0219i aplica\u021biile matri\u021belor din plastic IV. Componente cheie: Func\u021bii \u0219i configura\u021bie V. Selectarea ma\u0219inii de injec\u021bie \u0219i orient\u0103ri VI. Note suplimentare<\/p>","protected":false},"author":1,"featured_media":1364,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_gspb_post_css":"#gspb_image-id-gsbp-21fb5c2,#gspb_image-id-gsbp-7e44e40{text-align:center}#gspb_image-id-gsbp-21fb5c2 img,#gspb_image-id-gsbp-7e44e40 img{vertical-align:top;display:inline-block;box-sizing:border-box;max-width:100%;height:auto}","footnotes":""},"categories":[19],"tags":[],"class_list":["post-1358","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-technology"],"blocksy_meta":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/old.jbrplas.com\/ro\/wp-json\/wp\/v2\/posts\/1358","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/old.jbrplas.com\/ro\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/old.jbrplas.com\/ro\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/old.jbrplas.com\/ro\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/old.jbrplas.com\/ro\/wp-json\/wp\/v2\/comments?post=1358"}],"version-history":[{"count":3,"href":"https:\/\/old.jbrplas.com\/ro\/wp-json\/wp\/v2\/posts\/1358\/revisions"}],"predecessor-version":[{"id":1365,"href":"https:\/\/old.jbrplas.com\/ro\/wp-json\/wp\/v2\/posts\/1358\/revisions\/1365"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/old.jbrplas.com\/ro\/wp-json\/wp\/v2\/media\/1364"}],"wp:attachment":[{"href":"https:\/\/old.jbrplas.com\/ro\/wp-json\/wp\/v2\/media?parent=1358"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/old.jbrplas.com\/ro\/wp-json\/wp\/v2\/categories?post=1358"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/old.jbrplas.com\/ro\/wp-json\/wp\/v2\/tags?post=1358"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}