CN104862866A - Novel sley sword fixing method applicable to bidirectional weft insertion - Google Patents

Abstract

The invention relates to a fixing and positioning device, in particular to a bidirectional weft insertion and a fixing device for a reed sley of an air-jet loom with two auxiliary nozzles. It is characterized in that it includes a sley, an angle plate connecting the sley and the sley foot, and a fixed angle axis between the sley foot and the beating shaft. The fixing method is as follows: the sley 1 is connected with the sley foot 3 through the corner plate 2, and the sley foot 3 is connected with the beating shaft 5 through the locking device 4.

Description

A New Method of Fixing Sley Foot Suitable for Two-way Weft Insertion

technical field

The invention relates to a fixing and positioning device, in particular to a bidirectional weft insertion and a fixing device for a reed sley foot of an air-jet loom with two auxiliary nozzles. the

Background technique

The air-jet loom uses the jet air as the carrier, and through the friction between the air and the yarn, the weft yarn is pulled through the shed to form a fabric. Its special weft insertion method makes it have the characteristics of high speed and high efficiency, and at the same time, it takes into account the wide variety of adaptability, which is an important direction for the development of shuttleless looms. In recent years, both foreign manufacturers and domestic loom manufacturers have invested a lot of manpower and material resources in the research and development of air-jet looms, in order to further improve the performance of air-jet looms in terms of high speed, high efficiency, energy saving, and variety adaptability. . the

In addition, the weft insertion method of the air-jet loom brings some unavoidable problems, the most obvious of which is the untwisting phenomenon of the weft yarn during the weft insertion process. During the air-jet weft insertion process of the air-jet loom, the weft yarn is in an uncontrolled state. Since the weft yarn has not undergone the sizing process, the weft yarn will appear untwisted during the flight weft insertion process. Although the high-speed process of air-jet looms makes the time of weft yarn in this uncontrolled flight state shorter and shorter, this untwisting phenomenon will not be eliminated, and this untwisting phenomenon is more obvious when weaving wide-width fabrics. the

The untwisting phenomenon will have an impact on actual production. The main performance is that the stiffness of the weft yarns on the left and right sides of the loom is different, and the twist and stiffness of the tail yarns are lower, which makes the corresponding warp yarn less buckling and less tension. As the weaving process proceeds, this tension is less The situation will be accumulated, resulting in unclear opening, wrong stop of warp direction, etc. Therefore, in the actual weaving process, for the warp yarn at the end of the weft yarn, it is often necessary to use some small additional spacers and other devices to keep the warp stopper from falling, so as to maintain the smooth progress of the weaving process. The wrong stop of the loom occurs, however, some warp yarn breaks that should be detected will be missed, which will affect the overall effect of the fabric. the

The untwisting phenomenon of the weft yarn also has an impact on the style of the formed fabric. As we all know, the size of the twist has an all-round influence on the physical and mechanical properties of the yarn, especially the dye uptake rate and other factors in the yarn dyeing process. The white blank fabric woven by air-jet loom is prone to color difference between the left and right sides during the dyeing process. Today, when more and more attention is paid to the appearance quality of products, the color difference between the left and right sides has become a major problem in the weaving of air-jet looms, which can only be made up by adjusting the dyeing process, and cannot be fundamentally solved. the

In order to weaken the impact of the untwisting phenomenon in the weft insertion process of the air-jet loom on actual production and final products, the present invention particularly proposes a two-way air-jet weft insertion process. Its weft insertion process is different from that of ordinary air-jet looms. Weft insertion is performed alternately on the left and right sides to balance the twist of the yarn on both sides, and fundamentally solve the above-mentioned problems caused by untwisting. the

In the two-way weft insertion process, the air-jet loom needs to pass through the shed to pull the weft yarn from both sides. Its main components include main nozzles, auxiliary nozzles and special-shaped reeds, and the special-shaped reeds are common. It can be seen that the number of auxiliary nozzles will be twice that of the single-side weft insertion air-jet loom when the various process parameters remain unchanged. How to arrange and install auxiliary nozzles more reasonably in a narrow space is the difficulty of two-way air jet weft insertion. The purpose of the sley foot is to carry the special-shaped reed and fix the special-shaped reed on the beating-up main shaft. The arrangement of more auxiliary nozzles puts forward requirements for the fixed position of the special-shaped reed on the beating-up main shaft. The traditional The sley feet fixed by riveting are not suitable for double-main nozzle air-jet looms with two-way weft insertion. the

Contents of the invention

The invention overcomes the shortcomings of the prior art and provides a sley foot fixing device with simple structure and firm positioning, which is especially suitable for two-way weft insertion on a double-auxiliary nozzle air-jet loom. the

According to the technical solution provided by the present invention, the fixing device of the reed sley is characterized in that it includes a sley, a corner plate connecting the sley and the sley foot, and a locking device for fixing the sley foot and the beating shaft

Description of drawings:

Fig. 1 is the schematic diagram of the sley foot fixing device of the double auxiliary nozzle air-jet loom of the present invention

Detailed ways

In Figure 1 of the accompanying drawings in the description, 1-sley, 2-corner plate, 3-sley foot, 4-locking device, 5-beating shaft

The present invention will be further described in detail in conjunction with the accompanying drawings and embodiments. The accompanying drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the components related to the present invention

The sley 1 is connected with the sley foot 3 through the corner plate 2 , and the sley foot 3 is connected with the beating shaft 5 through the locking device 4 .

Claims (2)

1. be applicable to a novel lay sword fixing means for two-way wefting insertion, it is characterized in that: slay (1) is fixed by angle axle (2) and lay sword (3).

2. be applicable to a novel lay sword fixing means for two-way wefting insertion, it is characterized in that: lay sword (3) is fixed by locking device (4) and tightening weft axis (5).