A weft drafting device for an air-jet loom

Abstract

The invention discloses a weft yarn drafting device of an air-jet loom, which comprises a sley, a sley bead arranged on the sley, a steel reed and a drafting nozzle arranged on one side of the sley, and a support is arranged on the sley bead , one side of the support is provided with a weft stretching pipe, the weft stretching pipe and the drafting nozzle are respectively located on both sides of the support, the reed and the drafting nozzle are located on the same side of the support, and the beginning of the weft stretching pipe is provided with The weft yarn entrance, the support is provided with a through hole connected with the weft yarn entrance, the through hole is facing the drafting nozzle, and the upper and lower sides of the through hole on the support are respectively provided with pull rods for opening the reed teeth. Pull rod is inserted in the reed tooth of steel reed. The invention can generate greater traction, realize the bending and drafting of the weft yarn, does not need to intercept the reed, avoids the waste caused by intercepting the steel reed, and improves the weft insertion efficiency.

Description

technical field [0001] The invention relates to an air-jet loom, in particular to a weft drafting device of the air-jet loom. Background technique [0002] In order to prevent the weft from rebounding and produce weft shrinkage when the air-jet loom is weft insertion, it is mostly necessary to install a drafting nozzle at the end of the weft insertion of the loom. The drafting nozzle is provided with an air source by an independent air bag. The flying weft yarn has a drafting force to ensure that the weft yarn can be straightened smoothly and prevent the generation of weft shrinkage. In most cases, the traction force of the traditional drafting nozzle cannot reach the required traction force. Drafting air pressure, this simple way of increasing drafting air pressure causes serious gas waste, and this process requires a special solenoid valve and drafting air bag to control the air pressure, which increases the cost. In addition, it is necessary to intercept steel during this...

AI Technical Summary

Problems solved by technology

[0002] In order to prevent the weft shrinkage caused by the rebound of the weft yarn during the weft insertion of the air-jet loom, it is mostly necessary to install a drafting nozzle at the end of the loom’s weft insertion. The drafting nozzle is provided with an independent air bag. The flying weft yarn has a drafting force to ensure that the weft yarn can be straightened smoothly and prevent weft shrinkage. The traction force of the traditional drafting nozzle cannot reach the required traction force in most cases, so in order to ensure that the weft yarn is straightened, it needs a lot of Drawing air pressure, this simple method of increasing the drawing air pressure causes serious gas waste, and this process requires a special solenoid valve and drafting air bag to control the air pressure, which increases the cost. In addition, this process needs to intercept steel Reed, the process of cutting the reed not only reduces the efficiency of weft insertion, but also increases the cost and unnecessary waste

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