Crank press with lateral rod ejector

Details Crank press with lateral rod ejector Crank press with lateral rod ejector

1979-06-22

1981-10-27

Gilden, Leon

Metal deforming

By use of closed-die and coacting work-forcer

With stripping or ejecting from tool

10 11E, 72427, B21D 4500

Patent

active

042966256

ABSTRACT:
In an improved crank press arrangement including a sled which is reciprocally mounted on the frame of the arrangement. A toggle lever is pivotably mounted on the sled. One arm of the toggle lever has a cam-follower roller whereas the other arm coacts with an ejector arm slidably mounted in the sled. A crank drive reciprocates the sled. A control cam is in contact with the cam-follower. The ejector rod coacts with a blank and a die to form a workpiece. The crank drive and control arm are operatively connected by means of a gear train. The contour and shape of the control cam is such that while the cam-follower roller is in continuous contact therewith, nevertheless a temporary standstill of the ejector rod occurs during the operative cycle of the arrangement.

REFERENCES:
patent: 2450621 (1948-10-01), Wireman
patent: 2547304 (1951-04-01), Broscomb
patent: 2935212 (1960-05-01), Braun et al.
patent: 3619835 (1971-11-01), Nebendorf
patent: 3820376 (1974-06-01), Koch et al.
patent: 4014203 (1977-03-01), Koch et al.
patent: 4091486 (1978-05-01), Kalt

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