A real-time fault detection method and detection device for a needle selection head of a needle selector

Abstract

The invention discloses a real-time fault detection method of a needle selecting head of a needle selecting device. The real-time fault detection method comprises the steps that under an actual working state of the needle selecting head of the needle selecting device, a synthetic magnetic field during moving of the needle selecting head between the initial position and the action position is measured through a magneto-dependent sensor, and working parameters of the synthetic magnetic field are measured; under a normal working state of the needle selecting head of the needle selecting device, normal state parameters of the synthetic magnetic field are measured; and the working parameters and the normal state parameters are compared to judge whether the action of the needle selecting head ofthe needle selecting device breaks down or not, and the synthetic magnetic field is a synthetic magnetic field of a permanent magnet of the needle selecting head and a driving electromagnetic body, corresponding to the needle selecting head, in the needle selecting device. The invention further discloses a real-time fault detection device of the needle selecting head of the needle selecting device. By adopting the magneto-dependent sensor to measure the change of the magnetic field near an electromagnet and the needle selecting head, the working states of the needle selecting head are determined. By adopting the detection method, the influences of the work site environment of the electromagnetic needle selecting device are small, and the characteristics of high reliability and long service life are achieved.

Description

technical field [0001] The invention relates to a fault detection method and detection device for a needle selector, in particular to a real-time fault detection method and detection device for a needle selection head of a needle selector. Background technique [0002] Needle selectors are widely used in knitting equipment, with various types and huge consumption. They are key components that directly affect the performance of the whole machine of knitting equipment. Among them, electromagnetic needle selectors account for a huge proportion of needle selectors in knitting equipment. The electromagnetic needle selector is usually composed of an aluminum frame, an electromagnet, a rotating shaft, a needle selection head with a permanent magnet, and a control circuit board. The electromagnetic needle selector attracts the needle selection knife with a permanent magnet by controlling the direction of the magnetic field of the electromagnet. The head swings to different positions...

AI Technical Summary

Problems solved by technology

[0003] At present, the electromagnetic needle selectors on the market will have faults such as insufficient swing of the needle selector head or weak swing. These faults can be easily detected by optical methods, but in the actual working environment of electromagnetic needle selectors, optical devices It is easy to be blocked by oil and fibers and cause false detection results, so optical-based detection methods are mainly used in the production of electromagnetic needle selectors

At present, there is a lack of reliable real-time detection methods in the actual working environment, which often leads to a large number of defective fabrics in the production process, causing huge economic losses to users

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