The present invention relates to a rapier weft
insertion method for flattening carbon
fiber tows, comprising the following steps: 1), carbon
fiber is unwound from a
yarn drum, and passes through a
yarn stabilizer, a roller group, a
yarn guide block and a weft delivery rapier in sequence; 2), carbon
fiber enters the clamping mechanism of the weft delivery rapier, and is fixed by a yarn presser and a yarn
clamper; 3), the clamping mechanism of the weft delivery rapier moves forward and closes, clamps the carbon fiber, and the yarn presser is lifted to loosen the carbon fiber; 4), the weft delivery rapier and the weft connection rapier are brought together and docked; the clamping mechanism of the weft delivery rapier is loosened, and the clamping mechanism of the weft connection rapier is closed, so that the carbon fiber is received by the weft connection rapier and the weft
insertion work continues; 5), the weft delivery rapier returns to the initial position, and the yarn presser is pressed down again, so that the carbon fiber enters the clamping mechanism of the weft delivery rapier; 6), scissors
cut the carbon fiber; and repeat steps 3)-5), and the next weft
insertion cycle begins. The weft insertion method of the present invention can keep the carbon fiber flat during the weft insertion process and improve the weft quality.