Facilitating removal of deep drawn sheet metal can bodies from f

Details Facilitating removal of deep drawn sheet metal can bodies from f Facilitating removal of deep drawn sheet metal can bodies from f

1976-02-23

1977-05-31

Larson, Lowell A.

Metal deforming

By use of closed-die and coacting work-forcer

With stripping or ejecting from tool

72347, B21D 2220

Patent

active

040261409

ABSTRACT:
In the deep drawing of unitary can bodies, method and apparatus which reduce frictional contact of the can body sidewall with the female die opening to permit removal of the drawn can body from the female die in the direction of removal of the male punch member without damage to the can body. Deep drawing of organically coated sheet metal stock and removal from the female die structure is also made possible while maintaining desired protection. Smooth, non-reentrant sidewall surfaces are maintained in the work product.

REFERENCES:
patent: 346522 (1886-08-01), White
patent: 2324205 (1943-07-01), Gladfelter et al.
patent: 2373606 (1945-04-01), Slater
patent: 3664172 (1972-05-01), Cvacho

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