Invention Grant
- Patent Title: Method and apparatus for forming a can shell
- Patent Title (中): 用于形成罐壳的方法和装置
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Application No.: US13506092Application Date: 2012-03-26
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Publication No.: US08434342B2Publication Date: 2013-05-07
- Inventor: R. Peter Stodd
- Applicant: R. Peter Stodd
- Applicant Address: US OH Dayton
- Assignee: Container Development, Ltd.
- Current Assignee: Container Development, Ltd.
- Current Assignee Address: US OH Dayton
- Agency: Jacox, Meckstroth & Jenkins
- Main IPC: B21D22/20
- IPC: B21D22/20 ; B21D51/44

Abstract:
Can shells are produced with tooling installed on a single action mechanical press, and the tooling includes an upper retainer supporting a blank and draw die enclosing an outer pressure sleeve and an inner pressure sleeve surrounding a die center punch, all having air actuated pistons. The die center piston has an air reservoir connected by air passages which form air springs for the inner pressure sleeve, and the outer pressure sleeve receives the same controllable air as the reservoir or low pressure plant air supply. The inner pressure sleeve has a projecting nose portion which initiates the drawing of a cup and has contoured surfaces which mate with corresponding surfaces on a die core ring to form and clamp the chuckwall of the shell during downstroke of the press. A lower panel punch forms the center panel, panel wall and countersink of the shell during upstroke of the press.
Public/Granted literature
- US20120186321A1 Method and apparatus for forming a can shell Public/Granted day:2012-07-26
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