Device for removing a die, a discard and a closing plate from an

Details Device for removing a die, a discard and a closing plate from an Device for removing a die, a discard and a closing plate from an

1983-01-18

1984-11-27

Larson, Lowell A.

Metal deforming

By extruding through orifice

With cutting

722735, B21C 3504

Patent

active

044844662

ABSTRACT:
After extrusion in an indirect metal extrusion press a removal arm, the end of which carries a holding sleeve for a die, a discard and a closing plate, is swung into the press axis between the billet carrier and the closing ram. The sleeve is divided into two transversely to the press axis. One part is fixed to the arm and clamps the die, while the other part receives the discard and the closing plate and can be displaced axially in the direction of the closing ram from the fixed sleeve part, the discard and the closing plate attached thereto being released. An hydraulically displaceable clamping seat provided on the removal arm and comprising respective pairs of grippers moves from below up to the closing plate and the discard and embraces them. During the operation to shear the discard from the extruded billet present in the clamped die the discard and the closing plate are moved downwards in a controlled manner. After the extruded billet has been extracted, the removal arm which holds the die on the one hand and the discard with the closing plate on the other hand at different heights, swings into its starting position so as to remove the tools and prepare them again in a controlled manner.

REFERENCES:
patent: 3530702 (1970-09-01), De Ridder
patent: 4154081 (1979-05-01), Boshold
patent: 4342212 (1982-08-01), Sibler

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