The weft length can be precisely adjusted by changing the diameter of weft storage drum (adjustable consecutively)and changing the release Turns, thus the waste of weft can be avoided.

• 只需简单调节储纬鼓的直径（连续可调）和改变释放圈数，可精确调节纬纱的长度，从而避免了纬纱不必要的浪费。