To enable a yarn loop obstructing correct suction into a suction nozzle to be surely unfastened by starting nodding motion of the suction nozzle opening in the surface territory of a winding package through a plurality of times of short changeover in the rotating direction of a driving device by the negative signal of a sensor device.

When upper yarn 34 cannot be caught by a suction nozzle 12 in a fixed time, and, when according to this a signal is not output from a sensor device 35 to a rewinding part computer 39, a reversible driving device 25 is controlled through a control rail 32 so as to let the suction nozzle 12 execute nodding motion V, Z. By this nodding motion V, Z, the loop of yarn and the like hooked by a needle comb arranged in the territory of a suction nozzle opening are unfastened, and the beginning end 49 of the upper yarn 34 is sucked into the suction nozzle 12 as laid down.