发明名称 |
Edge guide unwinding apparatus |
摘要 |
An apparatus for monitoring and correcting deviations in the transverse position of a longitudinally traveling web of material as it unwinds from a supply roll of material includes a cradle unwinder for supporting the supply roll and unwinding the web from the supply roll. The cradle unwinder is mounted for movement in the transverse direction of the moving web and includes a reversible motor for causing the cradle unwinder to move transversely. A web edge detector device is located downstream of the cradle unwinder to monitor the transverse position of the moving web. As deviations in the transverse position of the web occur, the edge detector sends a signal energizing the motor causing it to turn in one direction or the other to in turn cause the cradle unwinder to move transversely in a direction to correct the transverse deviation in the position of the moving web. The cradle unwinder also includes a movable device for adapting the cradle unwinder to support supply rolls of material of different widths.
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申请公布号 |
US4461431(A) |
申请公布日期 |
1984.07.24 |
申请号 |
US19810264974 |
申请日期 |
1981.05.18 |
申请人 |
TEX-FAB, INC. |
发明人 |
WILEY, THOMAS W.;JOYCE, WILLIAM R. |
分类号 |
B65H23/032;(IPC1-7):B65H25/26 |
主分类号 |
B65H23/032 |
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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