发明名称 |
Position and direction sensing system for an inspection and handling system |
摘要 |
The invention provides a pick and place system having a taper module that determines both placement and direction of the carrier tape by optically counting sprocket holes as they move in either direction. Compartments in a carrier tape are serially spaced along the longitudinal axis of the tape. The tape also includes a plurality of sprocket holes serially spaced along a line that is parallel to the longitudinal axis of the tape. The distance between compartments corresponds to a predetermined number of sprocket holes. Two optical couplers are set at a predetermined distance smaller than the s pacing between consecutive sprocket holes. Signals from the couplers will have a unique sequence depending on the direction of the tape. By using direction and number of sprocket holes, the exact position of the tape can be determined.
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申请公布号 |
US6311886(B1) |
申请公布日期 |
2001.11.06 |
申请号 |
US19990434116 |
申请日期 |
1999.11.04 |
申请人 |
ROBOTIC VISION SYSTEMS, INC. |
发明人 |
ALEXANDER STEVEN J.;UBERT JON |
分类号 |
B65H20/20;B65H23/04;(IPC1-7):B65H26/00 |
主分类号 |
B65H20/20 |
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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