B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
B29C 45/30 (2006.01) B29C 45/28 (2006.01) B29C 45/76 (2006.01)
Patent
CA 2582308
An injection molding three way shut off valve assembly and method in which the three way valve assembly is configured to be disposed to control a flow of a molten material from an injection unit to a runner system. Preferably, the valve assembly has a valve plunger configured to be disposed between the injection unit and the runner system; the valve plunger having a flow-through channel and a purge channel. Movement structure is configured to control the position of the valve plunger between (i) a molten material flow position where the molten material flows through the flow-through channel, (ii) a molten material blocked position where the molten material is blocked from flowing through the flow-through channel, and (iii) a molten material purge position where the molten material flows through the purge channel, without disconnecting the injection unit from the runner system.
L'invention concerne un ensemble vanne de fermeture trois voies en moulage par injection et un procédé pour la configuration de l'ensemble permettant de contrôler un flux de matériau en fusion depuis une unité d'injection vers un système de distribution. De préférence, l'ensemble comporte un plongeur destiné à être placé entre l'unité d'injection et le système de distribution; ce plongeur comporte un canal d'écoulement et un canal de purge. La structure de mouvement permet de contrôler la position du plongeur entre (i) une position de flux de matériau fondu dans laquelle ce matériau s'écoule à travers le canal en question, (ii) une position de blocage de matériau fondu dans laquelle ce matériau est bloqué quant à l'écoulement considéré, et (iii) une position de purge de matériau fondu dans laquelle ce matériau emprunte le canal de purge, sans déconnexion unité d'injection/système de distribution.
Husky Injection Molding Systems Inc.
Husky Intellectual Property Services
LandOfFree
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