Production of metal containers

Details Production of metal containers Production of metal containers

1995-08-21

1997-12-02

Larson, Lowell A.

Metal deforming

By use of closed-die and coacting work-forcer

Cup or shell drawing

72468, B21D 2200, B21D 2221, B21C 306

Patent

active

056924097

ABSTRACT:
A die for the toolpack of a wall-ironing apparatus for forming metal cans is laterally displaceable for accommodating misalignment of the wall-ironing punch from its central axis. Restoring force to return the die to its own central position is provided by pneumatically operated biassing elements. For increasing the restoring force available, those biassing elements which are on the upstream side of lateral die movement are rendered ineffective on the die by engagement with stops located at the central die position. Usually, as described, the die is one of a pair of dies coupled for lateral movement together.

REFERENCES:
patent: 3656335 (1972-04-01), Kaminski
patent: 4262512 (1981-04-01), Maeder
patent: 4554815 (1985-11-01), Weishalla
patent: 4843863 (1989-07-01), Grims et al.
patent: 4926669 (1990-05-01), Grims et al.
patent: 5016462 (1991-05-01), Grims et al.
patent: 5235842 (1993-08-01), Freeman et al.
EP Search Report dated Mar. 22, 1995.
Annex to Search Report Oct. 24, 1994.

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