Fly-shuttle loom harness frame position limiter

Abstract

The invention discloses a heald frame limit device for shuttle loom, comprising a plurality of heald frames, which is characterized in that: two heald transverse heads are respectively arranged at two ends of a heald frame; an upper row and a lower row of location perforations are arranged on the heald transverse heads of the heald frame for a heald bar to pass through; a plurality of heald yarns pass through the heald bar; the heald bar is fixed on the heald frame via a heald clip; a slider is arranged on each heald transverse head of the heald frame; a limited block is arranged at each end of the heald frame, and a lifting track corresponding to the slider and capability of controlling the sliding of the slider is arranged on the limited block. The invention has the advantages that the shaking of the heald frames in the weaving process is effectively solved and the distance between heald frames is greatly reduced, so that friction between warp and heald yarn or other loom elements in the weaving process is avoided and the end breaking is reduced.

Description

technical field [0001] The invention relates to an auxiliary device on a shuttle loom, in particular to a heald frame limiting device for a shuttle loom which can control the movement of the heald frame on the shuttle loom. Background technique [0002] At present, shuttle looms also occupy a considerable proportion in the weaving of the textile industry. The warp yarn opening of the current shuttle loom relies on the cam to act on the heald pulley to rotate, driving the heald belt to lift up and down, and pulling the heald frame to move up and down so that the warp yarn rises and falls to form a weaving fell for weaving. But there are following problems in loom shedding weaving process: at first be that the hanging heald place of stepping heald bar of shuttle loom is to do arc swing, like this, the heald frame that is connected with stepping heald bar by hanging heald hook will move up and down. Shaking back and forth causes the warp yarns to rub against the healds, causin...

AI Technical Summary

Problems solved by technology

But there are following problems in loom shedding weaving process: at first be that the hanging heald place of stepping heald bar of shuttle loom is to do arc swing, like this, the heald frame that is connected with stepping heald bar by hanging heald hook will move up and down. Shaking back and forth causes the warp yarns to rub against the healds, causing the warp yarns to break. Secondly, due to the existence of the heald pulley, the distance between the front and rear heald frames is doubled. In the middle, the height of the rear heddle must be increased, that is, the opening stroke of the rear heddle is greater than the opening stroke of the front heddle, and the deformation of the warp yarn is almost proportional to the square of the shed size, so that the tension of the rear heddle warp yarn is greatly increased after deformation, and it is easy to The main reason for warp yarn breakage in the weaving process is the friction between yarn and yarn, yarn and weaving machine parts such as heddles and unreasonable weaving technology.

At present, weaving factories usually install the discarded shuttle boards at both ends of the heald frame to limit the position of the heald frame and prevent shaking, but it cannot reduce the distance between the front and rear healds, and the use time is too long. After being worn out, the shaking of the heald frame will produce

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