Woof-intersecting method and device thereof for weaving machine

Abstract

The invention provides a woof-intersecting method and a device thereof for a weaving machine. The method utilizes the motion phase difference between a woof-feeding gripper head and a woof-receiving gripper head, enables the woof-receiving gripper head to move to a limit position in the advance direction and enables yarn brought by the woof-feeding gripper head to get across a yarn-hooking head of the woof-receiving gripper head so that the woof-receiving gripper head starts to retreat, the woof-feeding gripper head still advances to a limit position in the advance direction to finish yarn intersection before the woof-feeding gripper head retreats until the yarn is finished. The device comprises a woof-feeding mechanism and a woof-receiving mechanism which are respectively arranged at both sides of a weaving machine main shaft, and a relative mounting angle between the weaving machine main shaft and a woof-feeding main shaft fixing part at one end of the weaving machine main shaft is larger than a relative mounting angle between the weaving machine main shaft and a woof-receiving main shaft fixing part at the other end of the weaving machine main shaft. The invention enables the tension of the yarn to have little change during the yarn intersection, does not influence the detection of a yarn-stopping device, improves the success rate of the yarn intersection, reduces false yarn stops due to the high-speed motion of the weaving machine and can improve the rotating speed of the weaving machine so as to improve the production efficiency.

Description

technical field [0001] The invention relates to the technical field of rapier looms, in particular to a weft transfer method and device for a loom. Background technique [0002] At present, the weft transfer of rapier looms is generally completed by the weft sending rapier, the weft receiving rapier, the left and right rapier pulleys, and the mechanism that drives the rapier pulleys to move. The method adopted is that when the main shaft of the loom rotates to the weft selection angle, the weft sending sword will clamp the weft yarn and move to the formed warp opening at high speed. When the weft sending sword head reaches the middle of the loom, the weft sword At this time, the weft yarn has passed the hook yarn head at the end of the weft-connecting sword head, and then the weft-feeding sword head and the weft-connecting sword head move to the outside of the loom at the same time (that is, to the weft-feeding sword head, weft-connecting sword head, and The return directio...

AI Technical Summary

Problems solved by technology

In this way of weft transfer, the weft yarn will inevitably vibrate greatly during the weft transfer process, and the tension of the weft yarn will change suddenly and irregularly during the transfer of weft, so it is easy to cause faults such as broken weft, false alarm of weft stop, or poor weft transfer, which will affect the product. Quality results in low loom productivity

At the same time, the faster the speed of the loom, the more obvious the poor phenomenon of weft transfer, which greatly limits the operation of the loom at high speed.

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