发明名称 Mfr. of screwed hooks and eyes - by single machine which shears and bends wire and cuts screw thread
摘要 <p>A machine for making screwed hooks and eyes is able to carry out all the necessary operations at one work station. The wire (12) is fed under a shear blade (4) where it is cut to the required length. The cut length of wire (13) is held over a mandrel whilst a first bending operation is performed by the punches (5) and a second bending by the punches (9, 10). The shank (12a) of the eye is aligned with the edge of the fixed thread rolling die (14a) by the action of the second bending operation. The moving die (14b) then slides over the shank (12a) to roll the screw thread.</p>
申请公布号 DE2230406(B2) 申请公布日期 1980.07.03
申请号 DE19722230406 申请日期 1972.06.22
申请人 LUDWIG GREFE GMBH, 5880 LUEDENSCHEID 发明人 JURCZYK, ARNOLD, 5880 LUEDENSCHEID
分类号 B21F1/06;B21F45/00;B21H3/06;(IPC1-7):21F1/06 主分类号 B21F1/06
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