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1. 发明授权

US5191686A Apparatus for protecting stretching rollers in synthetic film stretchers 失效
标题翻译：用于保护合成膜拉伸机中拉伸辊的装置
公开(公告)号：US5191686A
公开(公告)日：1993-03-09
申请号：US654832
申请日：1991-02-13
申请人： Hans-Juergen Maierhofer , Willi Eberle , Adolf Mueller
发明人： Hans-Juergen Maierhofer , Willi Eberle , Adolf Mueller
IPC分类号： B29C55/02 , B29C55/06 , B29L7/00
CPC分类号： B29C55/06
摘要： Lengthwise stretching machines for thermoplastic synthetic films are equipped with mechanical or opto-electrical devices for detecting a tearing of the film or an accumulation of film on the stretching rollers and for stopping the machine when tearing or accumulation occurs, to protect the stretching rollers. Unallowable loads and possible damage to the roller bearings are avoided by mounting the bearing housings (1, 2) of each roller (3, 4, 5) of a lower roller (7) in the machine frame for cooperation with a force generating device (8) which presses the respective bearing housing (1, 2) toward oppositely located rollers (9, 10, 11) of an upper roller group (12) to an extent permitted by stops (14, 15) rigidly arranged on the machine frame (13). The rollers (3, 4, 5) of the lower group received in the bearing housing (1, 2) can overcome the pressing force of the device (8) to slide in a yielding direction away from the upper rollers, when a roller accumulates film thereon. The rollers should move in the yielding direction so that roller axes remain in parallel to each other. The yielding movement activates a respective mechanically operable electrical limit switch of a plurality of such switches (16, 17).
摘要翻译：用于热塑性合成膜的纵向拉伸机装备有机械或光电装置，用于检测薄膜的撕裂或拉伸辊上的膜的积聚，并且在发生撕裂或累积时停止机器，以保护拉伸辊。通过将下辊（7）的每个辊（3,4）的轴承座（1，2）安装在机架中以与力产生装置配合来避免滚动轴承受到不允许的负载和可能的损坏 8），其将相应的轴承壳体（1,2）压向上辊组（12）的相对定位的辊（9,10,11），达到刚性布置在机架上的止动件（14,15）所允许的程度 13）。容纳在轴承壳体（1,2）中的下组的辊（3,4,5）可以克服装置（8）的挤压力，使其在屈服方向上远离上辊滚动，当辊子累积膜上。滚子应沿屈服方向移动，使滚子轴线保持彼此平行。屈服运动激活多个这种开关（16,17）的相应的可机械操作的电限位开关。

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