| 摘要 |
PURPOSE:To keep off any winding trouble by making each tension being to both new and old rolls so proper separately at an interval till rolling on a winding core of the overall width of a succeeding web after cutting is completed since a cut of the web in running has started. CONSTITUTION:A cut is started at time t1, and a tension command value TAA at an interval reaching to a torque desired value C1 just before web overall width of an old roll is cut, from a tension desired value TA at time of starting, is decreased every moment into low tension, and tension is brought to zero at cutting completion. On the other hand, at a new roll, low tension is given simultaneously with a winding start of the cut tip, and a tension command TBB is increased until specified tension TB at time of rolling completion of the overall width from rolling starting time. Thus, since proper tension is given to both old and new rolls, web breaking and winding trouble can be eliminated. |
