YARN STORAGE DEVICE AND YARN WINDING DEVICE

摘要

A yarn storage device (18) is configured so that yarn is wound and stored around a yarn storage section (37) formed on the outer peripheral surface of a yarn storage roller (32) and that the yarn is unwound from the yarn storage section (37) in the direction along the rotation axis of the yarn storage roller (32). Also, the yarn storage device (18) is provided with a tension application section (38). The tension application section (38) is provided on the side of the yarn storage section (37) from which the yarn is unwound, and the tension application section (38) applies tension to the yarn, which is being unwound from the yarn storage section (37), while rotating integrally with the yarn storage section (37). The tension application section (38) comprises: a rubber ring (51) consisting of a stretchable elastic body; and an expanding and contracting section (50) provided on the inner side radially of the rubber ring (51) and sandwiching the yarn between the expanding and contracting section (50) and the rubber ring (51). The diameter of the expanding and contracting section (50) is increased and decreased according to the rotational speed of the yarn storage roller (32).