Mold core positioning device

Details Mold core positioning device Mold core positioning device

1999-01-11

2000-07-25

Heitbrink, Tim

Plastic article or earthenware shaping or treating: apparatus

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

With product ejector

264318, 425DIG5, 425DIG58, B29C 4540

Patent

active

060930152

ABSTRACT:
A mold core positioning device includes a cam member carried by a first mold segment that is configured to engage a cam follower carried by a second, cooperating mold segment. The cam follower is provided on a core slide to which an outwardly extending core member, such as a core pin, is connected. The core slide is movable toward and away from a mold cavity to move the core pin into and out of a position within the mold cavity. The cam member includes an extension cam surface and a withdrawal cam surface. The withdrawal cam surface includes a breakaway cam surface that causes slow retraction of the core pin relative to the molded part, and a retraction cam surface that causes more rapid withdrawal of the core slide and core pin after the core pin has been initially separated from the molded part.

REFERENCES:
patent: 2481648 (1949-09-01), Dehn
patent: 3060509 (1962-10-01), McCubbins, Jr.
patent: 3266098 (1966-08-01), Bucy
patent: 3387323 (1968-06-01), Wyllie et al.
patent: 3811845 (1974-05-01), Feist
patent: 4515342 (1985-05-01), Boskovic
patent: 4889480 (1989-12-01), Nakamura et al.

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