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Woof-intersecting device for weaving machine

A weft-joining technology for looms, applied to looms, textiles, textiles, and papermaking, to achieve high work efficiency, reduce false weft stop reports, and increase rotational speed

Inactive Publication Date: 2011-06-29
林东
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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  • Woof-intersecting device for weaving machine
  • Woof-intersecting device for weaving machine
  • Woof-intersecting device for weaving machine

Examples

Experimental program
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Embodiment

[0039] In this embodiment, a weft handover method utilizes the movement phase difference between the weft sending rapier and the weft receiving rapier to make the weft yarn handover smoothly, specifically including the following steps:

[0040] (1) Start the loom, and after the weft sending sword head completes the weft selection, it will carry the weft yarn and the weft receiving sword head toward each other. This process is as follows: figure 1 As shown in the figure, 1 is the sword wheel, 2 is the weft yarn, 3 is the weft sending sword belt, 4 is the weft sending sword head, and 5 is the weft receiving sword head;

[0041] (2) When the main shaft of the loom rotates at a certain angle, the weft-connecting rapier 5 reaches the limit position of its advancing direction. The structure at the junction of the head 4 and the weft-joining sword head 5 is as follows figure 2 As shown, the weft yarn handover starts;

[0042] (3) After the weft-connecting rapier 5 reaches the lim...

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PUM

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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. [0002] Background technique [0003] 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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D03D47/18D03D47/20D03D47/27
CPCD03D47/271D03D47/272D03D47/275
Inventor 林东刘奕华卢达陈晓东
Owner 林东
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