Metal deforming – By use of closed-die and coacting work-forcer – Forcing work into or within closed die; e.g. – forging
Patent
1999-02-01
2000-08-01
Larson, Lowell A.
Metal deforming
By use of closed-die and coacting work-forcer
Forcing work into or within closed die; e.g., forging
7237002, 413 69, B21D 4104
Patent
active
060949619
ABSTRACT:
A container necking tool, and corresponding method, for necking an aluminum beverage can is disclosed that includes a punch sleeve that is longitudinally fixed in relation to a necking die. The sleeve and die form a gap therebetween, into which a pusher assembly pushes the container to produce the neck on a necking contour surface. The necking tool also includes a punch body that has a longitudinal air passage therethrough. A plenum is formed between the punch body and sleeve to angularly distribute compressed air around the sleeve. Compressed air pressurizes the container during necking stage, and is diverted to the gap while the can is disengaged from the necking tool to keep the gap clean of debris.
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Crown Cork & Seal Technologies Corporation
Larson Lowell A.
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