Apparatus for necking can bodies

Details Apparatus for necking can bodies Apparatus for necking can bodies

1998-11-06

1999-10-05

Butler, Rodney

Metal deforming

By use of closed-die and coacting work-forcer

Forcing work into or within closed die; e.g., forging

B21D 2200

Patent

active

059606665

ABSTRACT:
An improvement in necking apparatus for forming a necked end on a can body wherein during the necking operation pressurized air moves into the interior of a can body being necked through an open end portion of a conduit in a knock out ram which knock out ram is reciprocally mounted in the necking die and wherein valve means are provided to control the amount of pressurized air flowing out through the open end portion and to retain the pressurized air in the conduit after the necking operation has been completed. Also, the flow of the pressurized air is stopped by a resilient connection between a portion of the knock out ram and a portion of the necking die.

REFERENCES:
patent: 5678445 (1997-10-01), Shultz
patent: 5832769 (1998-10-01), Shultz

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