Abstract: In view of the relatively low degree of automation of the auxiliary equipment for fiber winding, this paper designs an automatic cutting/hanging mechanism, and experimentally explores the shearing effect of the key picking and cutting module. Using glass fiber and epoxy resin applied in industrial production as experimental materials, the effects of fiber number, slip distance, tension, and shear speed on the minimum cutting force were tested under dry yarn and dipped state, respectively, and compared. The fracture morphology of the tow was analyzed to reflect the cutting effect. The experimental results show that the minimum cutting force increases almost linearly with the increase of the number of fibers, which decreases with the increase of the slip distance and tends to be gentle, decreases with the increase of tension, and increases with the increase of shear speed. Under the same conditions, the minimum cutting force required for the glass fiber tow in the dipping state is smaller, and the fracture morphology is better.

Key words: glass fiber winding, automatic cut/hang yarn, V-shaped cutting tool, shear experiment, composites