Throttle for injection molding machine for injection molding...

B - Operations – Transporting – 29 – C

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Details

B29C 45/53 (2006.01) B29C 45/54 (2006.01) B29C 45/58 (2006.01) B29C 45/76 (2006.01) B29C 45/78 (2006.01)

Patent

CA 2659160

The present invention relates to a flow restrictor for an injection moulding machine for the injection moulding of rubber materials or of elastomer materials, and comprises a flow restrictor module, an in-flow channel and out-flow channel provided therein, and also a flow restrictor device. The in-flow channel can have been provided at an angle with respect to the out-flow channel. The flow restrictor device comprises a flow restrictor piston which more particularly serves not only for restricting the flow of the material but also for injection of the rubber material or of the elastomer material into the injection mould. Use of the inventive flow restrictor can give a system and method for the temperature control of rubber materials or of elastomer materials during injection moulding, and this more particularly can achieve shorter cycle times.

La présente invention concerne un étranglement pour une machine de moulage par injection pour le moulage de matériaux en caoutchouc ou élastomères, qui présente un bloc d'étranglement, un canal d'afflux disposé dans ce bloc et un canal de sortie ainsi qu'un dispositif d'étranglement. Le canal d'afflux peut être disposé suivant un certain angle par rapport au canal de sortie. Le dispositif d'étranglement présente un piston d'étranglement qui sert notamment à étrangler le flux de matériau et à injecter le matériau en caoutchouc ou élastomère dans le moule de moulage par injection. L'étranglement selon l'invention permet de réaliser un système et un procédé pour mettre en température des matériaux en caoutchouc ou élastomères lors du moulage par injection, de sorte que l'on obtienne notamment des temps de cycles plus courts.

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