发明名称 |
Wiederholnietvorrichtung. |
摘要 |
Repetition pull-through blind riveting apparatus (10), of the type comprising a reusable and reloadable mandrel with an enlarged head which is pulled through each tubular rivet in turn to install the rivet is provided with a safety device (141) for counting the total number of times the mandrel has been pulled. The apparatus includes pneumatically-operated mandrel pulling means, and a counter (132) counts the number of times the pressure of the air powering the pulling device reaches a pressure slightly below that required to pull the mandrel head through a rivet. The counter (132) is arranged to actuate, when a safe limit number of pulls has been counted, both a shut-off valve (137) to shut-off the supply of pressure air to the mandrel pulling means, and a visual indicator (135). The visual Indicator (135) may be actuated at a warning count number rather lower than the safe limit number. The counter (132) can be reset to zero only by use of a separate key (142), when a new mandrel is installed in the rivet placing apparatus. |
申请公布号 |
DE69009609(D1) |
申请公布日期 |
1994.07.14 |
申请号 |
DE1990609609 |
申请日期 |
1990.07.20 |
申请人 |
AVDEL SYSTEMS LTD., WELWYN GARDEN CITY, HERTFORDSHIRE |
发明人 |
DENHAM, KEITH, WELYN, HERTFORDSHIRE;DEAR, AIDEN ROBERT, NR. HITCHIN, HERTFORDSHIRE |
分类号 |
B21J15/10;B21J15/00;B21J15/02;B21J15/16;B21J15/28;B21J15/34;B21J15/36;(IPC1-7):B21J15/28 |
主分类号 |
B21J15/10 |
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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