Cloth passing detection device

Abstract

The invention provides a cloth passing detection device comprising a shell, an infrared transmitting tube and at least one infrared receiving tube. The shell comprises first and second through holes which are arranged in a spaced way and positioned at the same side. The infrared transmitting tube and the infrared receiving tubes communicate through the first and second through holes. The external walls of the infrared transmitting tube and the infrared receiving tubes and the external side walls of the shell are arranged in the spaced way. The infrared receiving tubes only receive infrared light of which the wavelength is 850nm. The external walls of the infrared transmitting tube and the infrared receiving tubes and the external side walls of the shell are arranged in the spaced way so that the infrared transmitting tube and the infrared receiving tubes can be effectively prevented from being worn by the cloth, and the service life can be prolonged. The infrared receiving tubes only receive infrared light of which the wavelength is 850nm so that the interference of infrared rays in the sunlight can be reduced, a driving circuit is enabled to be simple, space and cost can be saved, installation is easy, and the positions of the infrared transmitting tube and the infrared receiving tubes do not need to be adjusted due to the fact that the infrared transmitting tube and the infrared receiving tubes are arranged in one shell.

Description

technical field [0001] The invention relates to the field of industrial sewing machines, in particular to a cloth passing detection device used on industrial sewing machines. Background technique [0002] Industrial overlock sewing machines are generally divided into three-thread, four-thread, five-thread, six-thread, etc. The main function is to prevent the edge of the garment fabric from fluffing and de-threading. Using the overlock sewing machine can achieve trimming and sewing at the same time, which is suitable for sewing various fabrics. The overlock sewing machine has powerful functions and wide applicability. It is not only used for overlock sewing, but also suitable for sewing underwear and knitted fabrics. With the rapid development of the electronics industry, industrial automation control has also been integrated into the overlock sewing machine. Computer direct drive automation control must have detection and feedback devices, for example, during the sewing pr...

AI Technical Summary

Problems solved by technology

But this kind of detection device is inconvenient to install, and the angle of receiving and transmitting needs to be adjusted to achieve the best effect

Due to the wear and tear of the cloth on the detection device, the service life of this detection device is not very long. At the same time, due to the limitation of its working principle, the infrared rays in the sunlight affect it and are not sensitive to the detection of thin materials.

Images