Invention Grant
- Patent Title: Method for producing a cup-shaped object
- Patent Title (中): 杯状物的制造方法
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Application No.: US10570356Application Date: 2004-09-02
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Publication No.: US07661286B2Publication Date: 2010-02-16
- Inventor: Klaus Warmbrunn
- Applicant: Klaus Warmbrunn
- Applicant Address: DE Braunschweig
- Assignee: Maiko Engineering GmbH
- Current Assignee: Maiko Engineering GmbH
- Current Assignee Address: DE Braunschweig
- Agency: Greenblum & Bernstein PLC
- Priority: DE20320442U 20030904
- International Application: PCT/DE2004/001953 WO 20040902
- International Announcement: WO2005/023451 WO 20050317
- Main IPC: B21D22/20
- IPC: B21D22/20 ; B21D51/44

Abstract:
A method for the production of a cup-shaped article, in particular a blank of a screw cap for glass bottles or the like, from an enameled metal sheet, using two tools in a stepwise manner: 1) the blank is stamped from the metal sheet in a first tool by the relative motion between a cutting bell cooperating with a blank holder and a drawing block, and the blank is drawn around the drawing block, the width of a flange forming between the cutting bell and the blank holder being continuously reduced with a progressive degree of deformation until the flange reaches a defined width (R-r), and 2) the blank is deformed in a second tool such that the radially outwardly directed flange is deflected toward a profiling introduced in a wall of the blank.
Public/Granted literature
- US20060283228A1 Method for producing a cup-shaped object Public/Granted day:2006-12-21
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