Die lifter unit

Details Die lifter unit Die lifter unit

1979-12-31

1981-11-24

Crosby, Gene P.

Metal deforming

With means to drive tool

With means to permit tool positioning

100918, B21J 1300

Patent

active

043016731

ABSTRACT:
The bolster of a pressing or punching machine is provided with a hydraulic die lifter unit having a hydraulic system in itself, the die lifter unit including rollers adapted to allow a die to transport smoothly thereon, and being floatably fitted in a groove on the top surface of the bolster.

REFERENCES:
patent: 3111100 (1963-11-01), Georgeff
patent: 3139676 (1964-07-01), Grover
patent: 4152978 (1979-05-01), Abe

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