Measuring-distance self-adaptive detecting sensor for line breaking of spinning machine

Abstract

A measuring-distance self-adaptive (within a certain scope) detecting sensor for line breaking of a spinning machine comprises a steel wire ring, a steel collar, a detection probe on the outer side of the steel ring, and a signal processing circuit which is self-adapted to distance changes of the sensor, wherein the steel wire ring is rotated on the steel collar at a high speed in work; the detecting sensor for the line breaking is fixed around the steel ring; the device comprises an ultra-thin sensor coil (with a thickness of less than 0.3 mm), a detection circuit which can sense minor changes of a magnetic field and the signal processing circuit which is self-adapted to the distance changes of the sensor; and cyclic motions of the steel wire ring can be detected. The device has the advantages of a large distance detection scope, high sensitivity, strong disturbance resistance, a small volume, convenient installation, and avoidance of influences on layout of an original working position.

Description

technical field [0001] The invention relates to a detection and sensing technology for measuring distance, in particular to the real-time detection of spindle breakage when spinning frames in the textile industry are working. Background technique [0002] With the rapid development of the textile industry, manual inspection, the traditional way to detect thread breaks in spinning frames, has been unable to meet the needs of the industry due to the disadvantages of high work intensity and low efficiency. For this reason, many textile technicians have done a lot of scientific research work to explore how to automatically detect the spinning thread breakage of the spinning frame. [0003] At present, a way to detect thread breakage in spinning frames is to use a photoelectric thread breakage sensor, that is, when the sensor emitter emits a beam of light when it is working, the light beam penetrates the detection area and projects a light spot on the photoelectric receiving head...

AI Technical Summary

Problems solved by technology

Inadequacies of this method: due to the need to rely on the optical transmitter and receiver to achieve signal collection, the result is easily affected by floating fibers and other flying dust between the light emitting and receiving devices in the textile site, resulting in false alarms; long-term work in production In the workshop, a large amount of oil and dust are easily attached to the light emitting and receiving probes, which leads to a decrease in the recognition rate of the sensor; due to the large number of spinning frame spindles, complex mechanisms and narrow working space, it takes time and effort to clean the probes of the light emitting and receiving devices, which affects normal operation. industrial production

The disadvantage of this scheme is that the permanent magnet close to the steel ring will have a magnetization effect on the steel ring and the traveler, and the permanent magnet will attract the traveler when the traveler passes by, hindering the movement of the traveler and changing the original non-resistance movement of the spinning machine state, long-term operation will increase the probability of disconnection; in addition, the sensor is installed on the iron table of the spinning frame, and the magnetic force lines of the permanent magnet will gather toward the iron table with higher magnetic permeability, resulting in the magnetic field lines in the space where the sensing coil is located. The density decreases, which reduces the detection sensitivity and effective detection distance, and the actual detection distance is difficult to exceed 5mm

Since the spun yarn textile machine is difficult to transform into non-ferrous materials, these interference factors are difficult to eliminate

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