Device for detecting difference in warp tension of a loom

Abstract

A device for detecting difference in warp tension of a plurality of warp sheets let off side by side from different warp beams in the weft inserting direction detects a tension receiver having a plurality of contact faces which are individually in contact with the boundary side end portions of adjoining warp sheets at intervals in the weft inserting direction, and detects an angular rotational displacement or angular rotational force of the tension receiver around the axis extending in the warp moving direction.

Description

technical field [0001] The present invention relates to a detection device for detecting tension differences of several warp plane bundles adjacent to the weft insertion direction in a loom provided with several warp yarn reels by a simple method. Background technique [0002] As one of the devices for detecting the tension difference between two warp yarn plane bundles sent out from two warp yarn reels in the direction adjacent to the weft insertion direction, the following devices are known, which include: 2 places have the rocker of the contact surface contacting with the boundary side ends of the two warp plane bundles; the support rocker can rotate a certain angle around the axis extending along the direction of warp movement; the pillar is located in between, along the weft insertion direction 2 datums spaced apart and assembled on the rocker; two sensors, optical or volumetric, measuring the distance from the horizontal datum member to the datum for each warp plane be...

AI Technical Summary

Problems solved by technology

As a result, the former cannot correctly measure the displacement of the warp corresponding to the change in warp tension

[0006] In addition, in the optical detection device, if the wind wool adheres to the light-transmitting surface or the light-receiving surface of the detector and the warp yarn as the detection object, the light from the detector may be reflected by the wind wool, and as a result, the measurement cannot be performed. Exact distance from horizontal datum part to datum plane

[0007] In particular, in the device for measuring the distance between the reference plane provided on the rocker and the horizontal reference part of the detection device, although the measurement accuracy is required to be around 0.1 mm to 0.01 mm, although the optical detection device itself has such a high measurement Accuracy, but the rocker structure of the above-mentioned device cannot measure the distance between the reference plane and the horizontal reference part with high precision

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