EP 0279269 B1 19920513 - METHOD OF MAKING A DRAWN CAN OF SHEET METAL
Title (en)
METHOD OF MAKING A DRAWN CAN OF SHEET METAL
Publication
Application
Priority
DE 3704895 A 19870217
Abstract (en)
[origin: EP0279269A2] A deep-drawn can with a stepped edge adjoining the top of the cylindrical can body is produced by first deep-drawing, in a first draw and, if appropriate, one or more further draws, a cup which has a plane flange and whose internal diameter and height correspond to the internal diameter and height of the can body of the finished deep-drawn can. Using a holding-down tool acting on the flange, a part of the flange is then deformed to give the stepped edge, while leaving a residual flange, by means of a stepped-edge drawing ring with a drawing orifice whose diameter approximately corresponds to the external diameter of the can body, and with a stepped-edge recess which is provided at the inlet end thereof and is formed with a diameter greater than that of the drawing orifice, and by means of a stepped-edge stamp with a stamp part corresponding to the internal diameter of the can body, and with a stepped-edge part of greater diameter.
IPC 1-7
IPC 8 full level
B21D 22/22 (2006.01); B21D 22/28 (2006.01); B21D 51/26 (2006.01)
CPC (source: EP)
B21D 22/22 (2013.01); B21D 51/26 (2013.01)
Designated contracting state (EPC)
AT BE CH DE ES FR GB GR IT LI NL SE
DOCDB simple family (publication)
EP 0279269 A2 19880824; EP 0279269 A3 19900509; EP 0279269 B1 19920513; AT E75975 T1 19920515; DE 3704895 A1 19880825; DE 3704895 C2 19881117; DE 3870907 D1 19920617; ES 2031935 T3 19930101; GR 3005012 T3 19930524
DOCDB simple family (application)
EP 88101419 A 19880202; AT 88101419 T 19880202; DE 3704895 A 19870217; DE 3870907 T 19880202; ES 88101419 T 19880202; GR 920401352 T 19920624