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1. 发明专利

JPS5617143A ELECTRIC UPSETTER 失效
公开(公告)号：JPS5617143A
公开(公告)日：1981-02-18
申请号：JP9091079
申请日：1979-07-19
申请人： MITSUBISHI HEAVY IND LTD
发明人： KUSHIBE YUUKI , SAKANO JIYOUICHI , INAMURA JIYUNJI , HACHIMAN SHIYOUJI
IPC分类号： B21J9/08 , B21J9/06
摘要： PURPOSE:To prevent the buckling to be caused by working, in working of blank materials with an electric upsetter, by providing a work guide which encircles the blank material and is movable along the blank material. CONSTITUTION:For example, with a vertical type twin-shaft type upsetter, a blank material 5a is slidably sandwiched between clamping electrodes 1, 3 by a clamping cylinder 2. Thus sandwiched blank material 5a is moved upward by an upsetting cylinder 6a and an upsetter supporting port 7a. A series of devices including a work guide 16a and others for preventing the buckling of the blank material 5a are provided to the supporting part 7a. When the top end of the blank material 5a abuts on an anvil electrode 9a, a pressure switch actuates. Then the switch of a transformer 10a goes on automatically to supply electric current to the transformer 10a, flexible conductor 11a, anvil electrode 9a, blank 5a, clamping electrode 1, flexible conductor 12b and transformer 10a, thereby working the blank material 5a to a desired shape. The same holds true of other blank material 5b.

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