发明名称 |
Closing device and closing method |
摘要 |
A closing device 100 which presses a die 2 against a rotating pipe body 1 such that an open end portion of the pipe body 1 is plastically closed by the die 2 includes a cored bar 3 inserted into the pipe body 1 to close the open end portion of the pipe body 1 on the opposite side of the die 2 , and a reactive force applying mechanism 43, 60 which allows the cored bar 3 to retreat and applies a reactive force to the retreating cored bar 3 when the cored bar 3 receives a predetermined load or more during processing of the pipe body 1 by the die 2.
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申请公布号 |
US2008034826(A1) |
申请公布日期 |
2008.02.14 |
申请号 |
US20070826330 |
申请日期 |
2007.07.13 |
申请人 |
KAYABA INDUSTRY CO., LTD. |
发明人 |
TSUDA NAOMASA;MISHIMA KEISUKE |
分类号 |
B21D22/14 |
主分类号 |
B21D22/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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