Siro covering yarn winding device and working method thereof

The invention relates to the field of core-spun yarn winding, in particular to a siro core-spun yarn winding device and a working method thereof. The invention provides a siro covering yarn winding device which comprises a winding roller and an unwinding roller, the unwinding roller is provided with yarn, and the other end of the yarn is connected to the winding roller; an adjusting part is arranged between the winding roller and the unwinding roller and comprises two adjusting cylinders which are arranged in a split manner; cutting mechanisms and twisting mechanisms are arranged on the opposite sides of the two adjusting cylinders. After the yarn is wound, the two adjusting cylinders are folded oppositely, so that the two cutting mechanisms cut off the yarn; after the yarn is cut off, the two twisting mechanisms clamp the yarn on one side of the winding roller from the two sides, the winding roller continues to drag the yarn, and the twisting mechanisms twist the yarn to be tightened. After yarn winding is c