| 摘要 |
PURPOSE:To achieve a high quality winding operation by controlling tension of web and contact pressure etc. according to the result of comparison between the actually wound diameter and the prescribed value obtained from the wound diameter of a winding roll, a wound length, and the average thickness of the web etc. that may suffer from secluar changes. CONSTITUTION:While winding the web (W) around the roll core 2, the first and second rotating speed detector 10 and 11 detect rotating speeds of the roll core 2 and web feeding roller 1, V and Vo respectively, and the length detector 12 detects the length of the wound veb by using the total number of revolutions of the roller 1. These output signals from the detectors 10, 11, 12 are input in the microcomputer 16 together with each output signal from a thickness setting device 13 which sets the product of average thickness (t) of the web (W) by a constant 4/pi in form of an electric signal, from a roll core diameter setting device 14 shich set the diameter (d) of the roll core 2, and from a density setting device 15 which sets the desired density of winding (rho). Then, the value (4tl/pirho+ d<2>)<1/2> is operated through a microcomputer 16 and respective adjusting mechanisms for tension and contact pressure are controlled according the result of comparison between thus operated value and wound diameter D. |
