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2. 发明公开

EP0616966A1 Anti-wrap device for a web press 失效
标题翻译： Vorrichtung zum Verhindern des Aufwickelns在Bahndruckmaschinen。
公开(公告)号：EP0616966A1
公开(公告)日：1994-09-28
申请号：EP93203609.8
申请日：1993-12-21
申请人： BALDWIN WEB CONTROLS (A DIVISION OF BALDWIN GRAPHIC SYSTEMS, INC.)
发明人： Pavliny, Mark , Lewandowski, Edward , Lawrence, William , Gregory, Michael , Ozers, Guntis
IPC分类号： B65H33/18
CPC分类号： B41F33/18 , B41P2233/23
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.
摘要翻译：一种用于防止破碎的印刷织物围绕或以其他方式污染印刷机单元的橡皮布滚筒的系统和方法。该系统和方法包括位于印刷机单元下游的卷筒纸张紧装置，用于保持断纸的张力并从印刷机单元牵引纸幅。该装置包括多个卷筒纸扰动检测器，用于检测指示卷筒纸断裂的波纹，纹波或其它干扰。位于纸幅上方和下方的一对防缠绕辊在检测到纸幅断裂时被接合，以将纸幅与它们之间接合，以对纸幅施加张力并将其从打印单元拉出。防缠绕辊以名义上大于印刷辊的表面速度的表面速度旋转。防缠绕辊包括多个相对的峰和谷部分，使得它们能够沿着接触线互锁和夹持幅材。

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