Device for inserting or removing a hot blank in a drop hammer

Details Device for inserting or removing a hot blank in a drop hammer Device for inserting or removing a hot blank in a drop hammer

1975-05-21

1977-03-22

Lanham, C.W.

Metal deforming

With means to handle work or product

By gripper and/or endless chain

294 88, 294106, 214 1BC, 72426, 72405, B21D 4310, B21D 4506

Patent

active

040129381

ABSTRACT:
A device for manipulating a hot blank relative to a forging tool in a drop hammer comprises a plurality of gripping jaws carried by a unit connected to a rotatable tongs arm, said jaws being pivotably mounted for selective movement through a limited arc toward and away from one another, and each of said jaws including a gripping claw adapted to be longitudinally displaced relative to its associated jaw. Movement of the tongs arm and associated movement of the gripping jaws and their respective gripping claws is employed to selectively position the several claws within cup-shaped recesses formed in the forging tool at positions underlying the flash of a hot blank in the tool. The unit further includes counter-holders which are positioned to overlie the forging tool in spaced relation to said flash whereby the simultaneous coaction between the gripping claws and blank and between the counter-holders and forging tool operate to break a forged blank loose from said tool.

REFERENCES:
patent: 2677342 (1954-05-01), Miller
patent: 2811266 (1957-10-01), Udal
patent: 2940791 (1960-06-01), Lorenson et al.
patent: 3010587 (1961-11-01), Hollinger
patent: 3401739 (1968-09-01), Opletal
patent: 3620095 (1971-11-01), Dane
patent: 3651957 (1972-03-01), Ball
patent: 3718216 (1973-02-01), Wilson
patent: 3731822 (1973-05-01), Friesen et al.
patent: 3741517 (1973-06-01), Pogonowski
patent: 3760956 (1973-09-01), Burch
patent: 3867849 (1975-02-01), Onoda

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