Air jet loom

Abstract

The present invention provides an air-jet loom capable of easily changing the jetting amount of each of the plurality of sub-nozzles to adjust the position of the high-pressure region and the position of the low-pressure region of the weft insertion path of the weft yarn. The air-jet loom (100) has: a main nozzle (15), which injects weft yarn on the weft insertion path (21); a plurality of sub-nozzles (14), which are arranged along the weft insertion path (21), and eject air; and An air tank (40), which is connected to a plurality of sub-nozzles (14), and stores air inside, and the plurality of sub-nozzles (14) has: a first sub-nozzle (14a), which is in the high-pressure area of ​​the weft insertion path (21) (H) ejecting air; and the second sub-nozzle (14b), which ejects air at the low-pressure area (L) of the weft insertion path (21), the first sub-nozzle (14a) and the air tank (40) between The flow path resistance of the first air flow path (16a) is smaller than the flow path resistance of the second air flow path (16b) between the second sub-nozzle (14b) and the air tank (40).

Description

technical field [0001] This invention relates to air jet looms. Background technique [0002] The air-jet loom has: a main nozzle for ejecting a weft yarn, and a plurality of sub-nozzles arranged along a weft insertion path of the weft yarn. By ejecting air from the sub-nozzles, the traction of the weft yarn in the weft insertion path is increased. [0003] Here, on the inlet side of the weft insertion path of the weft yarn, in order to increase the pulling force of the weft yarn, it is necessary to set a larger amount of air ejected from the sub-nozzles. Also, on the exit side of the weft insertion path of the weft yarn, it is also necessary to increase the amount of air ejected from the sub-nozzles in order to increase the tension of the weft yarn. On the other hand, the amount of air ejected from the sub-nozzles may be smaller in the vicinity of the central portion of the weft insertion path of the weft yarn than on the inlet side or the outlet side. Therefore, in Pate...

AI Technical Summary

Problems solved by technology

[0005] However, in Patent Document 1's figure 1 In the weft insertion path of the air-jet loom described, the positions in the high-pressure area where the amount of air ejected from the sub-nozzle is large due to the air tank connected to the sub-nozzle and the positions in the low-pressure area where the amount of air ejected from the sub-nozzle is small respectively fixed

Therefore, there is a problem that the position of the high-pressure area and the position of the low-pressure area of ​​the weft insertion path cannot be changed according to the passing width of the fabric.

[0006] In addition, there is also a method of changing the pitch of the sub-nozzles in the high-pressure area and the low-pressure area, but in this case, it is not easy to change the position of the high-pressure area and the position of the low-pressure area of ​​the weft insertion path, and there are also differences in the arrangement of the sub-nozzles. The problem that the rules and the arrangement of the piping connected to the sub-nozzle become complicated

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