公开(公告)号：US4363457A

公开(公告)日：1982-12-14

申请号：US203934

申请日：1980-11-04

申请人： John R. Flint ,  Kenneth L. Hendrikson ,  K. George Rabindran

发明人： John R. Flint ,  Kenneth L. Hendrikson ,  K. George Rabindran

IPC分类号： B65H23/18 ,  G03B1/04 ,  G11B15/32

CPC分类号： B65H23/1806

摘要： A system is described for holding the tension of a web substantially constant as the web is transported from a supply spool to a take-up spool. The rotation of each spool is controlled by a motor. A tension control circuit senses the currents in both motors and alters motor current so as to hold the sum of the motor currents at a substantially constant value. In this manner, the sum of the torques generated by the motors and their spools is held at a substantially constant value to thereby maintain web tension substantially constant as the radii of the spools change during web movement.

摘要翻译： 描述了一种系统，用于当腹板从供应卷轴传送到卷取卷筒时，将卷筒纸的张力保持在基本上恒定。 每个线轴的旋转由电机控制。 张力控制电路检测两个电动机中的电流并改变电动机电流，以将电动机电流的总和保持在基本恒定的值。 以这种方式，由马达及其线轴产生的扭矩的总和保持在基本上恒定的值，从而当卷筒纸运动期间线轴的半径改变时，纸幅张力保持基本恒定。