发明授权
- 专利标题: Anti-wrap device for a web press
- 专利标题(中): 卷筒纸印刷机的防缠绕装置
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申请号: US327095申请日: 1994-10-21
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公开(公告)号: US5443008A公开(公告)日: 1995-08-22
- 发明人: Mark Pavliny , Edward Lewandowski , William Lawrence , Michael Gregory , Guntis Ozers
- 申请人: Mark Pavliny , Edward Lewandowski , William Lawrence , Michael Gregory , Guntis Ozers
- 申请人地址: IL Countryside
- 专利权人: Baldwin Web Controls
- 当前专利权人: Baldwin Web Controls
- 当前专利权人地址: IL Countryside
- 主分类号: B41F33/00
- IPC分类号: B41F33/00 ; B41F33/06 ; B41F33/18 ; B65H23/192 ; B65H26/02 ; B65H43/04 ; B41F5/04
摘要:
A system and method for preventing a broken printing web from wrapping about or otherwise fouling the blanket cylinders of printing press units. The system and method includes a web tensioning device located downstream of the printing press units for maintaining tension upon a broken web and pulling the web from the printing press units. The device includes a plurality of web disturbance detectors for detecting a wave, ripple or other disturbance indicative of a web break. A pair of anti-wrap rollers located above and below the web are engaged upon detection of a web break to engage the web between them to exert tension onto the web and pull it from the printing units. The anti-wrap rollers are rotated at a surface speed nominally greater than the surface speed of the printing rolls. The anti-wrap rollers include a plurality of opposed peak and valley portions which enable them to interlock and grip the web along a line of contact.
公开/授权文献
- US4397258A Machine for one-sided coating of thin sheets 公开/授权日:1983-08-09