METHOD OF YARN CHANGING BY AUTOMATIC YARN CHANGING WINDER

摘要

PURPOSE:To prevent the occurrence of end breakage as well as to improve a yarn change successful rate, by stopping a thread guide regulating long-size member at a position proximate to a spare bobbin, performing a yarn change, and after pulling out a full bobbin, rotating and moving it up to the position approximated to the bobbin. CONSTITUTION:When a bobbin A in the midsth of winding is reached to the specified quantity, a turret plate 7 is rotated as far as 180 deg., and a thread guide regulating long-size member 20 also rotates and moves. On the other hand, a thread handler guide 9 operates, removing a running yarn filament Y from a traverse motion, and it is handled to the blade cut side, so that the running yarn filament Y is engaged with an engaged part of the thread guide regulating long-size member 20, and it is continuously wound as forming a punch wind on an outer circumferential surface of a yarn winding layer of the bobbin A. At this time, the running yarn filament Y comes into contact with a bobbin B as well, but it will not cause any hindrance to an end breakage and a yarn change at all. Reversely, frictional passage of the running yarn filament Y by the thread guide regulating long-size member 20 becomes lessened, whereby the end breakage at the time of the yarn change is reduced, thus a yarn change successful rate is improvable.