发明名称 VERFAHREN ZUR HERSTELLUNG EINER TIEFZIEHDOSE AUS BLECH.
摘要 Method of producing deep drawn cans from sheet consists of drawing the can in a first stage using a drawing ring provided with a recessed front end. During this stage only the drawing opening part whose diameter corresponds to that of the can is used to produce a can part with the finished length and diameter. In the second stage the side edge located between the ring and holder is moved downwards to shape the step-like edge by deforming it between recessed part and stepped stamp.
申请公布号 DE3870907(D1) 申请公布日期 1992.06.17
申请号 DE19883870907 申请日期 1988.02.02
申请人 RASSELSTEIN AG, 5450 NEUWIED, DE 发明人 ERFGEN, WERNER, W-5450 NEUWIED, DE
分类号 B21D22/22;B21D22/28;B21D51/26;(IPC1-7):B21D22/28 主分类号 B21D22/22
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