| 摘要 |
Bobbin winding, has control to set spindle drive to give rotating bobbin constant surface speed at all diameters as bobbin size increases, to maintain constant yarn tension during winding. To wind a yarn on to a bobbin (2), the bobbin rotates on a spindle (4) which is controlled to give a constant bobbin surface speed as the bobbin diameter increases. During winding, a correction signal is passed to the control (9) derived from the deviation caused by a delay time at the control between the actual bobbin surface speed and the nominal speed. The deviation between the bobbin actual and nominal surface speeds is registered at each bobbin diameter, to give a correction signal for a deviation at each diameter, for the control to set the working of the spindle drive (6).
|
