Wire-bending apparatus |
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| 申请号 | US27021D | 申请日 | 1969-07-24 | 公开(公告)号 | USRE27021E | 公开(公告)日 | 1971-01-05 |
| 申请人 | 发明人 | ||||||
| 摘要 | THE SPECIFICATION AND DRAWINGS DISCLOSE A MACHINE FOR BENDING WIRE INTO FORMED WIRE SPRING STRIPS OF THE TYPE USED IN AUTOMOTIVE SEATS. THE MACHINE COMPRISES A BENDING HEAD MOUNTED ON A FRAME FOR ROTARY MOVEMENT ABOUT AN AXIS AND LONGITUDINAL MOVEMENT ALONG THE AXIS. THE MACHINE IS PROGRAMMED TO RUN THROUGH REPEATING CYCLES TO PRODUCE A SPRING STRIP FOR EACH CYCLE. THE BENDING HEAD STARTS FROM A RETRACTED POSITION WHEREIN IT CLAMPS THE FREE END OF A COIL OF WIRE. IT THEN MOVES LONGITUDINALLY TO ITS ADVANCED POSITION, PULLING THE WIRE THROUGH A WIRE STRAIGHTENER AS IT ADVANCES. THE BENDING HEAD IS THEN RETRACTED STEP BY STEP ALONG THE WIRE BACK TO THE RETRACTED POSITION, STOPPING AT PREDETERMINED AXIL POSITIONS TO MAKE BENDS IN THE WIRE. AFTER A PREDETERMINED NUMBER OF BENDS, THE BENDING HEAD AUTOMATICALLY CUTS THE WIRE TO COMPLETE THE FORMATION FO THE SPRING STRIP, AND READY THE MACHINE FOR THE NEXT CYCLE. EASILY CHANGEABLE CAMMING MEANS IS PROVIDED TO FACILITATE PROGRAMMING THE MACHINE TO PRODUCE ANY ONE OF A LARGE NUMBER OF DIFFERENT SPRING STRIPS WITH CHANGEOVER TIME REDUCED TO A MATTER OF MINUTES. |
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