| 摘要 |
PURPOSE:To obtain a titled device capable of winding a material at constant speed and tension regardless of a winding diameter by controlling the current of a winding motor by using the number of revolutions corresponding to the winding diameter as a reference line speed, in controlling the rotation of winding for maintaining the constant material tension between a winder and a roll located in the immediate vicinity of the winder. CONSTITUTION:The magnetic flux of a motor 6 of winder 1 is controlled 8 based on a coil outer diameter detected 7 by a line speed 4 and a rotational speed 5, on the other hand, a current of motor 6 is controlled 12 by a reference tension value 9 and an acceleration-deceleration compensation value 10. In the equation expressing a material tension F; the tension F is determined by the change of the number of revolution N (a minus term at right side in the equation), which is a value 25 obtained by dividing the sum 24 of the inertias of a coil and the winder 1 itself by the outer diameter D, and the material tension increases and the N decreases with the increase of the coil diameter D. The material tension F is always kept constant by controlling the motor current based on the value 32 obtained, by applying a changing value 27 of the differentiated number of revolutions (dN/dt), obtained by correcting 31 the reference line speed 26 by the coil outer diameter D, to the equation.
|
