{"id":11648,"date":"2023-05-11T09:35:31","date_gmt":"2023-05-11T01:35:31","guid":{"rendered":"https:\/\/firstmold.com\/?p=11648"},"modified":"2025-07-15T13:33:32","modified_gmt":"2025-07-15T05:33:32","slug":"feeding-system","status":"publish","type":"post","link":"https:\/\/firstmold.com\/fr\/guides\/feeding-system\/","title":{"rendered":"Syst\u00e8me d'alimentation dans un moule d'injection"},"content":{"rendered":"


En plus de la fond de moule<\/strong><\/a> mentionn\u00e9 plus haut, une autre composant de moule d'injection<\/strong><\/a> est le syst\u00e8me d'alimentation.<\/p>\n\n\n\n

Le syst\u00e8me d'alimentation (syst\u00e8me d'alimentation), \u00e9galement connu sous le nom de syst\u00e8me de coul\u00e9e, dirige le plastique fondu de la buse de la machine d'injection vers le syst\u00e8me de coul\u00e9e. cavit\u00e9 du moule<\/strong><\/a>. Son r\u00f4le est d'assurer un remplissage harmonieux et ordonn\u00e9 de la cavit\u00e9 et de transmettre la pression d'injection afin d'obtenir des pi\u00e8ces plastiques bien structur\u00e9es pendant le remplissage et la solidification.<\/p>\n\n\n\n

\"Syst\u00e8me
Syst\u00e8me d'alimentation pour le moulage par injection<\/figcaption><\/figure>\n\n\n\n

En g\u00e9n\u00e9ral, les moules dot\u00e9s de syst\u00e8mes d'alimentation conventionnels sont \u00e9galement appel\u00e9s moules \u00e0 canaux froids, bien que cette appellation soit rarement explicite.<\/p>\n\n\n\n

Composants et fonctions du syst\u00e8me d'alimentation<\/h2>\n\n\n\n

La conception du syst\u00e8me d'alimentation a un impact significatif sur l'apparence, les propri\u00e9t\u00e9s physiques, la pr\u00e9cision dimensionnelle et le cycle de moulage du produit final. Le syst\u00e8me d'alimentation se compose principalement des structures suivantes :<\/p>\n\n\n\n

\"Syst\u00e8me
Syst\u00e8me d'alimentation<\/figcaption><\/figure>\n\n\n\n

Tige<\/a>: <\/strong>Canal initial par lequel le plastique fondu est dirig\u00e9 \u00e0 partir de la buse de la machine d'injection. Il est responsable de l'acheminement de la mati\u00e8re plastique fondue vers les canaux.<\/p>\n\n\n\n

Coureur et sous-coureur<\/a>:<\/strong> Canaux de transition qui guident la mati\u00e8re fondue et la distribuent aux diff\u00e9rentes portes apr\u00e8s l'avoir re\u00e7ue de la carotte.<\/p>\n\n\n\n

Portail<\/a>:<\/strong> Des canaux courts qui acc\u00e9l\u00e8rent l'\u00e9coulement de la mati\u00e8re fondue dans la cavit\u00e9.<\/p>\n\n\n\n

Le froid est bien pr\u00e9sent :<\/strong> Stocke la mati\u00e8re froide pour \u00e9viter qu'elle ne p\u00e9n\u00e8tre dans la cavit\u00e9 et n'affecte la qualit\u00e9 de la pi\u00e8ce moul\u00e9e.<\/p>\n\n\n\n

Principes de conception du syst\u00e8me d'alimentation<\/h2>\n\n\n\n

1. Assurer la qualit\u00e9 des pi\u00e8ces en plastique<\/h3>\n\n\n\n

\u25cf \u00c9vitez autant que possible les marques de soudure. La pr\u00e9sence de marques de soudure affecte principalement l'aspect, rendant la surface du produit m\u00e9diocre. La r\u00e9sistance sera \u00e9galement m\u00e9diocre l\u00e0 o\u00f9 se trouvent les marques de soudure.<\/p>\n\n\n\n

\u25cf \u00c9viter un surconditionnement excessif et une pression de conditionnement insuffisante. Une mauvaise conception du syst\u00e8me d'injection ou des conditions de fonctionnement inappropri\u00e9es peuvent entra\u00eener un temps de tassement excessif ou une pression excessive sur le mat\u00e9riau fondu dans la cavit\u00e9. Un suremballage excessif augmente la densit\u00e9 du produit, accro\u00eet les contraintes internes et entra\u00eene des bavures.<\/p>\n\n\n\n

\u25cf \u00c9viter les questions telles que coup court<\/strong><\/a>, flash<\/strong><\/a>, l'emprisonnement de l'air, lignes de soudure<\/strong><\/a>Les contraintes r\u00e9siduelles, les traces, les jets, les contraintes r\u00e9siduelles, page de guerre<\/strong><\/a>, changement de base, etc.<\/p>\n\n\n\n

\u25cf Garantir de bonnes propri\u00e9t\u00e9s d'aspect du produit, faciliter l'\u00e9limination des portillons lors de la finition et veiller \u00e0 ce que les marques de portillon n'affectent pas l'aspect et l'application des pi\u00e8ces en plastique.<\/p>\n\n\n\n

\"Syst\u00e8me
Syst\u00e8me d'alimentation des moules con\u00e7u<\/figcaption><\/figure>\n\n\n\n

2. Efficacit\u00e9 de la production<\/h3>\n\n\n\n

R\u00e9duire autant que possible le besoin de post-traitement, raccourcir le cycle de moulage et am\u00e9liorer l'efficacit\u00e9 de la production.<\/p>\n\n\n\n

3. Mati\u00e8res plastiques<\/h3>\n\n\n\n

\u00c9viter d'utiliser des canaux d'\u00e9coulement trop longs ou trop petits pour les mati\u00e8res plastiques \u00e0 haute viscosit\u00e9 ou \u00e0 rapport L\/t court.<\/p>\n\n\n\n

4. \u00c9limination des r\u00e9sidus de solidification<\/h3>\n\n\n\n

\u25cf \u00c9limination pratique et fiable des r\u00e9sidus de solidification du syst\u00e8me d'alimentation.<\/p>\n\n\n\n

\u25cf Envisager des positions d'\u00e9jection appropri\u00e9es pour \u00e9viter la d\u00e9formation des pi\u00e8ces moul\u00e9es lorsqu'elles sont \u00e9ject\u00e9es.<\/p>\n\n\n\n

5. Mati\u00e8res froides<\/h3>\n\n\n\n

Concevoir des puits de refroidissement et des rainures de d\u00e9bordement appropri\u00e9s pour \u00e9viter que le mat\u00e9riau froid ne p\u00e9n\u00e8tre directement dans la cavit\u00e9 et n'affecte la qualit\u00e9 du remplissage.<\/p>\n\n\n\n

6. Remplissage des d\u00e9chets : <\/h3>\n\n\n\n

Minimiser et raccourcir la section et la longueur du syst\u00e8me d'alimentation afin de r\u00e9duire l'utilisation du plastique et la taille du moule.<\/p>\n\n\n\n

7. Dissipation de la chaleur et perte de charge<\/h3>\n\n\n\n

\u25cf Veillez \u00e0 ce que le chemin d'\u00e9coulement soit court et assurez une section transversale ad\u00e9quate.<\/p>\n\n\n\n

\u25cf \u00c9vitez les coudes de la voie d'\u00e9coulement et les changements soudains de direction de l'\u00e9coulement (utilisez des coins arrondis pour changer de direction).<\/p>\n\n\n\n

\u25cf La rugosit\u00e9 de la surface doit \u00eatre faible pendant le traitement du chemin d'\u00e9coulement.<\/p>\n\n\n\n

\u25cf Le multi-gating peut r\u00e9duire la perte de charge et la pression d'injection requise, mais peut entra\u00eener une ligne de soudure.<\/p>\n\n\n\n

8. R\u00e9aliser des remplissages simultan\u00e9s dans la mesure du possible<\/h3>\n\n\n\n

Dans le cas de cavit\u00e9s multiples dans un moule, il faut s'assurer que la mati\u00e8re en fusion entrant dans chaque cavit\u00e9 peut atteindre simultan\u00e9ment et que la pression \u00e0 l'entr\u00e9e de chaque cavit\u00e9 est \u00e9gale.<\/p>\n\n\n\n

En conclusion<\/h2>\n\n\n\n

Le syst\u00e8me d'alimentation est un aspect essentiel des moules \u00e0 injection. Pour obtenir des informations plus d\u00e9taill\u00e9es sur la carotte, le canal de coul\u00e9e et les portes, veuillez suivre les liens hypertextes correspondants dans cet article. N'h\u00e9sitez pas \u00e0 nous contacter \u00e0 l'adresse suivante marketing@firstmold.com<\/strong><\/a> pour de plus amples discussions techniques ou si vous avez besoin de services de fabrication de moules ou de production de pi\u00e8ces, visitez notre site web. devis pour le moulage par injection<\/strong><\/a> page.<\/p>","protected":false},"excerpt":{"rendered":"

Le syst\u00e8me d'injection est un \u00e9l\u00e9ment essentiel des moules d'injection. Cet article explique ce qu'est le syst\u00e8me d'injection et ses principes de conception.<\/p>","protected":false},"author":5,"featured_media":18293,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[47],"tags":[60],"class_list":["post-11648","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-guides","tag-injection-mold-component"],"acf":[],"yoast_head":"\nFeeding System | Runner System In The Mold<\/title>\n<meta name=\"description\" content=\"The gating system is a crucial component within injection molds. 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