Runner shearing assembly for plastic injection molding dies

Details Runner shearing assembly for plastic injection molding dies Runner shearing assembly for plastic injection molding dies

1984-09-27

1987-03-03

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

Female mold and charger to supply fluent stock under...

With preform severing means movable relative to mold

264161, 264163, 2643287, 425554, B29C 4538

Patent

active

046472754

ABSTRACT:
A runner shearing apparatus which is mounted in the ejection half of a plastic injection molding die for the purpose of separating the part and the runner during the ejection cycle. A sleeve is mounted in the die so that a hole drilled in the upper lip of the sleeve becomes the runner gate. An ejector pin is mounted in the sleeve so that during the ejection of the finished part the gate area is sheared, and the runner falls separate from the part.

REFERENCES:
patent: Re28158 (1974-09-01), Uhlig
patent: 3362046 (1968-01-01), Blummer
patent: 3672807 (1972-06-01), Genz
patent: 3776676 (1973-12-01), Kessler
patent: 3778211 (1973-12-01), Moen et al.
patent: 3936261 (1976-02-01), Jones et al.

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