Press dwell linkage

Details Press dwell linkage Press dwell linkage

1987-12-17

1989-07-11

Hornsby, Harvey C.

Presses

Reciprocating press construction

With mechanical force multiplier

72421, 100263, 100292, B30B 126

Patent

active

048460567

ABSTRACT:
A press apparatus mechanical dwell linkage comprises a pair of cam plates, one of which is fixed and the other pivotable, positioned in side-by-side parallel relationship. An operating arm is connected to the moving die in a press apparatus and simultaneously engages cam slots in each cam plate to transmit cam slot curvature and direction in the fixed cam to pivoting motion of the pivotable cam. A workpiece manipulating link oscillates with said pivotable cam to transversely change the position of a workpiece between the dies. The cam slots cooperate to introduce a dwell period in the work manipulating link at the start of, and end of, its workpiece-changing motion.

REFERENCES:
patent: 226998 (1880-04-01), Groom
patent: 444755 (1891-01-01), Casse et al.
patent: 2314123 (1943-03-01), Butterfield
patent: 3080983 (1963-03-01), Blatt
patent: 3209922 (1965-10-01), Melvin
patent: 3349602 (1967-10-01), Nelson
patent: 4513602 (1985-04-01), Sofy
patent: 4637243 (1987-01-01), Bond
patent: 4730477 (1988-03-01), Redman

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