Apparatus and method for sealing injection unit and sprue

Details Apparatus and method for sealing injection unit and sprue Apparatus and method for sealing injection unit and sprue

B - Operations, Transporting

29

C

B29C 45/17 (2006.01)

Patent

CA 2567529

An injection molding sealing apparatus configured to be installed in a coinjection hot runner with a coinjection nozzle, the coinjection nozzle having at least two melt channels ending at the same gate. The sealing apparatus is configured for sealing the coinjection hot runner to a hot runner sprue bushing (32), which is coupled to an injection assembly (33), during relative movement between (i) the coinjection hot runner and (ii) a stationary mold or machine section (53) . Sealing structure is configured to seal the coinjection molding hot runner sprue bushing (32) to the coinjection hot runner during the relative movement. Coupling structure is configured to provide relative movement between the injection assembly (33) and the stationary mold or machine section (53).

Dispositif d'étanchéité de moulage par injection conçu pour être monté dans un canal chauffant d'injection bimatière comportant un ajutage d'injection bimatière possédant au moins deux canaux de fusion se terminant au niveau de la même entrée. Ce dispositif d'étanchéité est conçu pour fermer hermétiquement le canal chauffant d'injection bimatière par rapport à la buse de carotte de canal chauffant, qui est accouplée à un ensemble d'injection, pendant le déplacement relatif entre i) le canal chauffant d'injection bimatière et ii) un moule fixe ou une partie de machine. Cette structure d'étanchéité est conçue pour fermer hermétiquement la buse de carotte de canal chauffant de moulage par injection bimatière par rapport au canal chauffant d'injection bimatière pendant ce déplacement relatif. La structure d'accouplement est conçue pour permettre un déplacement relatif entre l'ensemble d'injection et le moule fixe ou la partie de machine.

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