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

1979-03-09

1981-11-03

Gilden, Leon

Metal deforming

With means to drive tool

With means to selectably control movement of tool

7245301, B21J 746

Patent

active

042978700

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: 1773908 (1930-08-01), Knowlton
patent: 2486844 (1949-11-01), Herrick
patent: 2861486 (1958-11-01), Brauer
patent: 2916987 (1959-12-01), Hanni
patent: 3031903 (1962-05-01), Billen et al.
patent: 3827328 (1974-08-01), La Flamme et al.

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