Hydraulic press with integral knockout and stroke control

Details Hydraulic press with integral knockout and stroke control Hydraulic press with integral knockout and stroke control

1978-03-20

1981-01-06

Gilden, Leon

Metal deforming

By use of closed-die and coacting work-forcer

With stripping or ejecting from tool

72427, 72 24, B21D 4500

Patent

active

042429013

ABSTRACT:
A press, comprising a frame supporting an upper and lower bed for attachment of an upper and lower bolster, the upper and lower bolster each carrying mating halves of a complementary die, and the upper bolster having a knock-out opening therethrough, a hydraulic knock-out means carried by a drive means above the upper bolster that is adjustably electro-mechanically timed to cooperate with pins internal to the upper bolster to eject any work that may have remained in the upper die upon separation of the two mating die halves.

REFERENCES:
patent: 2484879 (1949-10-01), Ernst et al.
patent: 2759380 (1956-08-01), Bauer et al.
patent: 3157111 (1964-11-01), Andersen

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