Device and method for defect detection of curved glass based on machine vision

Abstract

The invention discloses a machine vision-based curved glass defect detection device and method. The device comprises an image acquisition device, a transmission device and a clamp; the image acquisition device is used for acquiring an image of curved glass; the clamp is used for positioning and clamping the curved glass; the image acquisition device and the clamp are installed on the transmissiondevice; and the transmission device controls the positions of the image acquisition device and the curved glass to enable an effective detection region to be formed on the curved glass below the imageacquisition device. The device can flexibly and stably detect the 3D curved glass, solves the problem of difficulty in defect image acquisition brought by light reflection caused by curved surface structure characteristics, realizes automation detection of common appearance defects including scratches, cracks and edge breakage, avoids the detection leakage phenomenon and is simple in structure and convenient to operate.

Description

technical field [0001] The invention relates to the technical field of visual inspection, in particular to a device and method for detecting defects of curved glass based on machine vision. Background technique [0002] In recent years, driven by 5G, wireless charging, OLED and other technologies, 3D curved glass has been favored by various 3C product companies. At the same time, 3D curved glass is favored by consumers for its beautiful appearance and excellent performance. As an important part of smartphones, 3D curved glass not only plays a protective role, but also determines the aesthetics of the phone and the user experience of consumers. However, in the process of manufacturing and transportation, defects such as scratches, cracks, edge chipping, and foreign objects will inevitably occur. Therefore, the 3D curved glass should be tested in time during the production process. [0003] Machine vision inspection technology is widely used in the field of product inspecti...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects and deficiencies of the prior art, and to provide a machine vision-based curved glass defect detection device, which can flexibly and stably detect 3D curved glass, and realize automatic detection of scratches, cracks, chipping, etc. Common appearance defects, solve the problem of difficulty in obtaining defect images caused by reflections caused by curved surface structural features, avoid missed inspections, simple device structure, and easy operation

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