Flash removal system for a mold

Details Flash removal system for a mold Flash removal system for a mold

1994-01-24

1995-10-03

Heitbrink, Tim

Plastic article or earthenware shaping or treating: apparatus

Female mold and means to shape parison directly by internal...

Including product ejector

264334, 425556, B29C 4540

Patent

active

054547083

ABSTRACT:
A mold is equipped with a flash removal system for automatically removing flash from a molded part. A flash-retaining pin is mounted in one of the mold parts in the flash area outside of the pinch line so that flash flows around the pin during molding. When the mold opens, the molded part and the flash is retained against the mold part. An ejector pin in the mold part inside the pinch line is extendable to eject the molded part along the pinch line while the flash is retained by the flash retaining pin. The flash retaining pin can be retractable to allow the flash to drop off, or an extendable flash ejecting piston can be used to eject the flash.

REFERENCES:
patent: 3362043 (1968-01-01), Langdon
patent: 3363282 (1968-01-01), Hagen
patent: 3499071 (1970-03-01), Hurst
patent: 3713764 (1973-01-01), Nelson
patent: 4272233 (1981-06-01), Cochran
patent: 4295813 (1981-10-01), Levine
patent: 4726925 (1988-02-01), Binder
patent: 4741874 (1988-05-01), Harrison

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