Core lifter system for use in a plastic injection mold

Details Core lifter system for use in a plastic injection mold Core lifter system for use in a plastic injection mold

1997-08-15

1998-09-29

Heitbrink, Tim

Plastic article or earthenware shaping or treating: apparatus

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

With product ejector

264318, 264334, 425577, 425DIG58, B29C 4544

Patent

active

058143572

ABSTRACT:
A core lifter system for a plastic injection mold, where one or more core blades is used to not only provide an undercut in the formed molded part, but also aid in ejecting the molded part from the mold. A blade retainer for the core blade is located in a support, with the support having a semi-circular socket shaped to engage a coupling end of the blade retainer. The blade retainer is immobily secured in the socket at a desired angle of inclination relative to the support.

REFERENCES:
patent: 3642417 (1972-02-01), Von Holdt
patent: 4854849 (1989-08-01), Sudo
patent: 5137442 (1992-08-01), Starkey
patent: 5281127 (1994-01-01), Ramsey
patent: 5316467 (1994-05-01), Starkey
patent: 5551864 (1996-09-01), Boskovic

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