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    Timed supply roll braking
    21.
    发明授权
    Timed supply roll braking 失效
    定时供应滚筒制动

    公开(公告)号：US3720383A

    公开(公告)日：1973-03-13

    申请号：US3720383D

    申请日：1971-02-18

    申请人： FMC CORP

    发明人： CRAWFORD D

    IPC分类号： B65H23/06 ,  B65H25/22 ,  B65H25/04

    CPC分类号： B65H23/063 ,  B65H23/06

    摘要： Apparatus for controlling the web tension in an intermittent motion web handling machine, and including a timed-controlled brake for the web supply roll to prevent inertia override of the supply roll when the web demand ceases during a temporary interruption of the operating cycle or when the machine is shut down. Web tension between web draw rolls and the supply roll is controlled during machine operation by a supply roll drag brake system. A dancer roll assembly regulates the speed of the web draw rolls, and also serves to accumulate and pay out the web according to web demand at a downstream processing station where the web is intermittently driven. The timed braking action is provided to assure that the web accumulated during cycle interruption or shutdown is sufficiently tensioned to enable a normal resumption of the production cycle.

    摘要翻译： 用于控制间歇运动幅材处理机中的幅材张力的装置，并且包括用于纸幅供应辊的定时控制的制动器，以在纸张需求在操作周期的暂时中断期间停止时或当操作周期的暂时中断时防止供应辊的惯性超驰 机器关机。 在牵引辊和供给辊之间的卷筒纸张力通过供给辊拖曳制动系统在机器操作期间被控制。 浮动辊组件调节幅材拉伸辊的速度，并且还用于在网状物被间歇地驱动的下游处理站处根据卷材需求累积并支付纸幅。 提供定时制动动作以确保在循环中断或关闭期间累积的纤维网被充分地张紧以使得能够正常恢复生产周期。