发明公开
- 专利标题： Punching device
- 专利标题（中）： 冲孔装置
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申请号： EP79300090.2申请日： 1979-01-18
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公开(公告)号： EP0003868A1公开(公告)日： 1979-09-05
- 发明人: Delves, Elsworth Richard
- 申请人： Purpose Engineers Limited
- 申请人地址： Duffield Road Little Eaton, Derbyshire GB
- 专利权人： Purpose Engineers Limited
- 当前专利权人： Purpose Engineers Limited
- 当前专利权人地址： Duffield Road Little Eaton, Derbyshire GB
- 代理机构： MacGregor, Gordon
- 优先权： GB625878 19780216
- 主分类号： B21J15/16
- IPC分类号： B21J15/16
摘要：
A rivetting machine for use with commercial vehicle brake shoes, the machine having a punch holder (17), an anvil (16) adjustable in height relative to the punch holder (17), a sprung rest (15) for a brake shoe, and mechanism for linearly, operatively moving the punch holder (17), the mechanism comprising a lever (22) actuable by a first pneumatic cylinder (41) to take up free movement between a punch (18) in the holder (17) and a brake shoe on the rest (15), and a second pneumatic cylinder (31) which produces further movement to effect a working operation on the brake shoe, a safety device being provided, so that, if, during the free movement, the punch holder (17) meets resistance, the holder (17) is immediately retracted.
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