Electromagnetic redraw actuator

Details Electromagnetic redraw actuator Electromagnetic redraw actuator

1992-06-12

1993-12-21

Larson, Lowell A.

Metal deforming

By use of closed-die and coacting work-forcer

Cup or shell drawing

72350, B21D 2228

Patent

active

052712591

ABSTRACT:
An apparatus is provided for extending and retracting a redraw sleeve of a container bodymaker and for electromagnetically holding the redraw sleeve in its extended position against a container blank. A linear motor is disposed between two bulkheads and is interconnected with the redraw sleeve through one or more actuating rods. An electromagnet assembly is disposed proximate to a redraw die and, when activated, holds the redraw sleeve against the container blank while a reciprocating ram forces the container blank through the redraw die. The linear motor and the electromagnet assembly are axially disposed relative to the redraw die and the bulkheads to provide adequate access to the nose of the ram, the redraw sleeve and other components.

REFERENCES:
patent: 1606141 (1926-11-01), Brown
patent: 3986382 (1976-10-01), Miller et al.
patent: 4614104 (1986-09-01), Straw
patent: 4807459 (1989-02-01), Grims et al.
patent: 4808955 (1989-02-01), Godkin et al.
patent: 4827163 (1989-05-01), Bhate et al.
patent: 4855702 (1989-08-01), Swanson et al.
patent: 4912343 (1990-03-01), Stuart
patent: 4972108 (1990-11-01), Venturini
patent: 5013945 (1991-05-01), Adolfsson
patent: 5079459 (1992-01-01), Huston et al.
patent: 5129252 (1992-07-01), Hahn et al.
patent: 5138862 (1992-08-01), Chasteen et al.

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