Double-let-off type composite shed water jet loom

Abstract

The invention discloses a double-let-off type composite shed water jet loom, which comprises an active electronic let-off device, a passive electronic let-off device, a main shaft coder, a dobby, a jacquard machine, a reed, a shed stabilization device, a beating-up shaft, a nozzle and a passive take-up device. An active servo control system is actively adapted to the requirements of load variations of a shed according to pattern tissues, so that the stability of the shed is ensured; an active let-off take-up system is matched with a sensing device, so that responses to the requirements of tension variations of warps can be quickly made, positive compensation is realized, and the accuracy and the stability of weft density of cloth are ensured; due to the adoption of a composite shed time sequence difference manner, the problems of warp breakage and shed unclearness, which are caused by high warp density and excessive resistance, are solved; and beating-up stroke is improved, so that a shedding amount is reduced, the fluctuation range of the warps is narrowed, the warp breakage frequency is reduced, and the weaving efficiency and the quality of the cloth are effectively improved.

Description

【Technical field】 [0001] The invention relates to the technical field of looms, in particular to the technical field of double-let-off composite shedding water-jet looms. 【Background technique】 [0002] At present, high-density jacquard fabrics are favored by consumers, and the market sales are gradually increasing. However, in the process of use, in order to achieve a certain shading effect, it is usually achieved by adding an interlining with a shading function. It not only increases the workload of sewing, but also the drape effect after sewing is often unsatisfactory, and it is heavy and difficult to change and wash. In this regard, most of the electronic jacquard machines with a single shed are used to weave with the loom. Not only the number of stitches is large, the installation is difficult, but also because the weaving fell is closer to the rear, the shedding is larger, the shedding is more difficult, and the warp tension fluctuates. The bigger it is, the greater t...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problems in the prior art, and propose a double-let-off composite shed water-jet loom, which adopts an active servo control system to actively adapt to the requirements of fabric shed load changes according to the pattern structure, so as to ensure the smoothness of the loom. Stability; a positive warp let-off and take-up system is adopted, equipped with a sensor device, which can quickly respond to warp tension changes and actively compensate to ensure accurate and stable fabric weft density; the method of compound shedding timing difference (also known as "dislocation" method) ), to solve the problem of warp breakage and unclear opening caused by high warp density and excessive resistance during weaving on the machine; by increasing the beating stroke, the amount of opening is reduced, the warp fluctuation range is reduced, and the warp break frequency is effectively reduced. Improved weaving efficiency and fabric quality

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