YARN WINDING DEVICE AND YARN WINDING METHOD

WIPO Patent Application WO/2012/127939

A1

The present invention secures time for yarn piecing without increasing the size of an unwound yarn accumulation part when yarn unwound from a yarn feeding bobbin is temporarily accumulated in the unwound yarn accumulation part and the yarn accumulated in the unwound yarn accumulation part is wound and packaged. When yarn travels normally (S202: NO, S203: YES), the yarn is unwound from a yarn feeding bobbin at a maximum constant yarn unwinding speed (Vc) within a possible range, when the yarn accumulation amount is more than A1 (S204: YES), the yarn winding speed is set to V1 (>Vc) (S205), when the yarn accumulation amount is A1 or less (S204: NO), the yarn winding speed is set to V2 (