| 摘要 |
<p>To equalize yarn tensions in a normal winding mode and a yarn switching mode to each other, when a yarn take-up operation is carried out by a yarn winder including a turret member 1 rotatably held on a machine frame (not shown) and rotatably carrying two spindles 2, 3 thereon, a contact roller 4 to be brought into contact at a predetermined pressure with a yarn layer wound on a bobbin 30 mounted to the spindle 2, 3, spindle-driving induction motors 5, 6, and a contact roller-driving induction motor 7, at least of the surface speed of the contact roller 4 and a frequency of current for driving the contact roller-driving motor 7 is controlled in a programmed manner in accordance with a normal winding mode, a yarn switching mode wherein a yarn is switched from a full bobbin to an empty bobbin and a soft-touch winding mode wherein the contact roller is brought into soft contact with the empty bobbin. <IMAGE></p> |
