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1. 发明授权

US4991785A Reel clamping device 失效
标题翻译：卷筒夹紧装置
公开(公告)号：US4991785A
公开(公告)日：1991-02-12
申请号：US470762
申请日：1990-01-26
申请人： John Kuo , Ming-Shung Cho
发明人： John Kuo , Ming-Shung Cho
IPC分类号： B65H75/24
CPC分类号： B65H75/242
摘要： A reel clamping device which is capable of positioning a reel rapidly and precisely. The reel clamping device is composed of a cylindrical shell having a plurality of through slots extended parallelly with the axis thereof; a screw bolt rotatably disposed within the shell, whose first and second threaded end portions have different thread directions; a jaw base mated to the first threaded end portion of the screw bolt; a plurality of first jaws fixed onto the jaw base and protruding from the through slots formed in the shell; a plurality of second jaws; a jaw seat mated to the second threaded end portion of the screw bolt, for accommodating the second jaws in such a way that the second jaws can protrude from or retract into the through slots freely; a second jaw drive mechanism mated to the second threaded end portion of the screw bolt, for driving the second jaws to protrude from or to retract into the through slots; and a handle for driving the screw bolt to rotate around its longitudinal axis so as to conduct the base and the seat to move toward or apart from each other and simultaneously to conduct the second jaws to protrude from or to retract into the through slots. The second jaw drive mechanism can conduct the second jaws to protrude from or to retract into the through slots within one turn of rotation about the axis of the shell, and the second jaw drive means is mated to the second threaded end portion of the screw bolt in such a way that it can be conducted to rotate integrally with the screw bolt by an adjustable frictional torque existed therebetween.
摘要翻译：一种能够快速且精确地定位卷轴的卷轴夹紧装置。卷筒夹紧装置由具有与其轴线平行延伸的多个通孔的圆柱形壳体组成; 可旋转地设置在壳体内的螺钉螺栓，其第一和第二螺纹端部具有不同的螺纹方向; 与所述螺栓的第一螺纹端部配合的钳口基座; 多个第一夹爪，其固定在所述钳口基部上并从形成在所述壳体中的所述通孔突出; 多个第二钳口; 与所述螺栓的第二螺纹端部配合的钳口座，用于容纳所述第二钳口，使得所述第二钳口能够自由地突出或从所述通孔中缩回; 第二钳口驱动机构，与所述螺栓的第二螺纹端部配合，用于驱动所述第二钳口从所述通槽突出或缩回; 以及用于驱动所述螺钉以围绕其纵向轴线旋转的手柄，以便使所述基座和所述座椅彼此移动或移动，同时使所述第二钳口从所述通孔突出或缩回到所述通槽中。第二钳口驱动机构可以使第二钳口在围绕壳体的轴线旋转一圈内从第二钳口突出或缩回到通孔中，并且第二钳口驱动装置与螺栓的第二螺纹端部配合以这样的方式，其可以通过其间存在的可调节的摩擦力矩与螺栓一起旋转。

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