Injection molding nozzle with valve pin alignment

Details Injection molding nozzle with valve pin alignment Injection molding nozzle with valve pin alignment

B - Operations, Transporting

29

C

B29C 45/20 (2006.01) B29C 45/37 (2006.01)

Patent

CA 2630754

An injection molding apparatus is disclosed that includes a valve-gated nozzle having a nozzle tip assembly and a valve pin slidably disposed therein. The nozzle tip assembly includes a nozzle liner having a first valve pin guiding portion, a valve pin guide having a second valve pin guiding portion upstream of the first valve pin guiding portion, and a transfer seal having a bore for receiving the nozzle liner and the valve pin guide therein. The transfer seal bore includes an alignment surface that surrounds the nozzle liner and the valve pin guide to align the first and second valve pin guiding portions with the mold gate, such that the valve pin is accurately aligned during operation. The transfer seal also includes means to couple the nozzle tip assembly to the nozzle body.

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