Interlock system for isostatic forming press

Details Interlock system for isostatic forming press Interlock system for isostatic forming press

1990-03-02

1991-04-23

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

Control means responsive to or actuated by means sensing or...

264 401, 419 49, 425 78, 425153, 425161, 425170, 4254052, 425595, B29C 4310, B22F 304

Patent

active

050095846

ABSTRACT:
Described herein is an interlock system for an isostatic press machine of the type including a high pressure container having upper and lower closure plugs releasably received in upper and lower openings to be used for loading and unloading work therethrough, and a holder frame for supporting the axial force of the container in an isostatic pressing phase of the press operation, the holder frame being pivotally supported at one side thereof for swinging movements about a vertical axis into and out of a holding position in engagement with the high pressure container, wherein the interlock system is provided with a lock mechanism constantly urged to lock the holder frame in the holding position, and a control means adapted to control the lock mechanism to maintain the lock on the holder frame when the internal pressure of the high pressure container is higher than a predetermined level and to release the lock when lower than the predetermined level.

REFERENCES:
patent: 3566450 (1971-03-01), Roberts
patent: 3931382 (1976-01-01), Witkin
patent: 4155476 (1979-05-01), Lipiec et al.
patent: 4471949 (1984-09-01), Ishii
patent: 4484881 (1984-11-01), Asari et al.
patent: 4582681 (1986-04-01), Asari et al.
patent: 4708627 (1987-11-01), Asari et al.

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