Apparatus and method for injection molding shooting pot...

Details Apparatus and method for injection molding shooting pot... Apparatus and method for injection molding shooting pot...

2007-11-06

2007-11-06

Heitbrink, Jill L. (Department: 1732)

Plastic and nonmetallic article shaping or treating: processes

With measuring, testing, or inspecting

C264S328800, C425S130000, C425S558000

Reexamination Certificate

active

10887353

ABSTRACT:
An injection molding shooting pot shot size control apparatus is 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 includes a valve inlet and a valve outlet. An adjustable melt control mechanism, preferably in the form of a hydraulically actuated wedge, is configured to (i) be disposed in a cavity plate adjacent to a hot runner assembly, and allow the shot size position to be set while the mold is open, and (ii) permit the charged shooting pot cylinder to decompress the melt when the wedge is pulled away from the shooting pot piston.

REFERENCES:
patent: 2770011 (1956-11-01), Kelly
patent: 4095931 (1978-06-01), Reitan
patent: 4717324 (1988-01-01), Schad
patent: 4966545 (1990-10-01), Brown et al.
patent: 6228309 (2001-05-01), Jones et al.
patent: 6491509 (2002-12-01), Schad et al.
patent: 2004/0217499 (2004-11-01), Manigatter et al.

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