Mold clamping system

Details Mold clamping system Mold clamping system

1991-04-01

1993-03-30

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

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

With means to close mold

384909, 4254501, B29C 4564

Patent

active

051982498

ABSTRACT:
An injection molding machine clamping system in which a stepped bar is provided between the movable and stationary platens, and blocking apparatus is carried by one of the platens to block movement of the stepped bar upon the happening of certain conditions. The stepped bar is slidably carried in a bushing in the other mold platen, the bushing preferably being made from an ultra-high molecular weight polyethylene material to reduce wear, to eliminate the need for lubricants, and also to reduce the intermittent clicking noise that results when the notched bar is moved axially through a bore.

REFERENCES:
patent: 3921225 (1975-11-01), Suska
patent: 3929347 (1975-12-01), Masser
patent: 4066246 (1978-01-01), Korstvedt
patent: 4111115 (1978-09-01), Cory
patent: 4363580 (1982-12-01), Bell
patent: 4370869 (1983-02-01), Jonassen
patent: 4393792 (1983-07-01), St. Clair
patent: 4586865 (1986-05-01), Hansen
patent: 4737093 (1988-04-01), Hori et al.
patent: 5002164 (1991-03-01), Bowyer

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