Yarn Break Detection System for Flat Yarn Warp Knitting Machine

Abstract

The invention relates to a broken yarn detection system for a flat filament warp knitting machine. The system is characterized by comprising a broken yarn detection rack, broken yarn real-time detection circuits and a PLC; each sectional type broken yarn detection circuit comprises a sectional type broken yarn detection rack, a diode and a direct-current LED alarm indicator lamp, and each sectional type broken yarn detection rack comprises an internal conductive sheet, an insulation layer, an external conductive sheet and a doffing reed; the internal conductive sheets are directly connected with a direct-current power supply input negative electrode through cables, the external conductive sheets are connected with negative electrodes of the diodes and negative electrodes of the LED alarm indicator lamps through cables, the LED alarm indicator lamps are directly connected with direct-current power supply input positive electrodes, and level signals of the diodes serve as alarm output signals and are connected to the PLC. Accordingly, real-time broken yarn detection on warp yarn and weft yarn supply in the production process of the flat filament warp knitting machine can be achieved,and meanwhile the functions such as sectional light alarm positioning and false detection avoidance are provided.

Description

technical field [0001] The invention relates to a yarn break detection system for a flat yarn warp knitting machine, which belongs to the technical field of mechatronics intelligent control of warp knitting equipment. Background technique [0002] The multifunctional film material compounded with polyolefin resin and various anti-aging materials is used as raw material, and the film is sliced ​​into flat yarns for yarn supply. It is used in the production of agricultural materials and products such as sunshade nets, woven bags, and support nets. Knitting machines are more and more widely used, but due to the transparent and colorless characteristics of some flat yarn raw materials used in production, the commonly used optical detection methods such as infrared yarn breakage detection and laser yarn breakage detection are invalid; Thick, the machine vibrates greatly during the production process, and the added value of a single product is low, making it difficult for machine ...

AI Technical Summary

Problems solved by technology

[0004] Based on the raw material characteristics, machine characteristics and product characteristics of the flat yarn warp knitting machine, it is required to provide a cost-effective yarn breakage detection technology that is reliable, cheap, easy to operate, and can avoid false detection. Yarn break detection system for the application requirements of flat warp knitting machine

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