Cloth defect detection device and real-time detection method

Abstract

The invention discloses a cloth defect detection device. The device comprises a background assembly, a light source assembly, a camera assembly and a main control device; the background assembly is arranged on a warp knitting machine and used for providing a background for to-be-detected cloth; the light source assembly is used for irradiating the to-be-detected cloth to provide illumination for the cloth; the camera assembly is used for shooting the to-be-detected cloth to acquire cloth images; the main control device is connected with the camera assembly; a background plate is arranged belowthe to-be-detected cloth; a linear light source is arranged above the to-be-detected cloth along the width direction of the cloth and irradiates the overlapped area of the to-be-detected cloth and the background plate; an industrial camera is arranged above the to-be-detected cloth; the lens of the industrial camera points to the intersection area of the irradiation light of the linear light source and the to-be-detected cloth; a distance L1 from the lens of the industrial camera to the intersection area of the irradiation light of the linear light source and the to-be-detected cloth is 800-1000 mm; and the an angle alpha between the axis of the lens of the industrial camera and a plane where the to-be-detected cloth is located is 55-75 degrees. The device can accurately detect defects onthe surface of cloth and give alarms, and is simple in structure and good in practicability.

Description

technical field [0001] The invention relates to the technical field of cloth detection, in particular to a cloth defect detection device and a real-time detection method. Background technique [0002] The cloth produced by the high-speed warp knitting machine is a kind of gray cloth with a wide range of applications, and it is widely used in the fields of window screens, sweaters, and carvings. In the cloth production process, due to multiple factors such as equipment stability, process arrangement, and thread quality, defects such as broken yarns, parallel lines, and holes will appear on the cloth surface. These defects will reduce the quality of the product and increase the work of the on-site employees. The quantity reduces the effective production time of the equipment and reduces the profit margin. [0003] At present, the traditional control method in the textile industry is to use manual inspection, which is inefficient, difficult to employ, and unsatisfactory for qu...

AI Technical Summary

Problems solved by technology

For this detection method, it relies on the fluttering of the yarn, which has insufficient probability and reliability. When the fluttering yarn does not pass through the equipment, it cannot be detected. For example, the yarn is relatively elastic, and it takes a long time to detect it after shrinking. When yarn breakage has occurred a long distance

The scope of use of such solutions is limited, and the scope of defects is uncontrollable

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