Tension regulating system for web of wound material - uses prod. of material tension and winding radius to activate brake on winding off roller

摘要

Procedure for regulating tension of material in a winding equipment in which a band of material is run between a winding-off roller and a winding-on roller by means of tensioning roller arrangement. The run of the band material between the winding-off and winding-on rollers (8, 3) and the radius (R) of the winding (1) on the winding on roller (3) is continuously measured and the measured values multiplied. The product of the multiplication is fed in a regulator (14) which after comparing the obtained value with a predetermined value is influencing a braking force of a braking equipment (16) on the winding off roller (8). Thereby the torque of the winding (1) on the winding on roller (3) resulting from the product of both measured values is corresponding to the predetermined value.