What Are the Advantages of Glass Defect Detection Equipment

In recent years, with the rapid development of industrial modernization and intelligence, modern glass, such as panel glass, automobile glass, architectural glass, optical glass, mobile phone cover glass, rear shell glass, 2D glass, 2.5D curved glass, 3D curved glass and other application fields are becoming more and more extensive. Among them, the covering glass industry has developed rapidly, with an annual shipment of about 3 billion pieces. The automatic detection technology of covering glass is called Mount Everest in the field of industrial detection. The quality of glass surface directly affects the quality of products and the later use of users. More and more enterprises begin to pay attention to the detection and control of surface defects in the process of glass online production.

Due to the influence of production process, environment and other factors, defects such as crystal spots, scratches, stains, impurities, black spots and clots are easy to appear on the glass surface during the production process. Therefore, the production process of glass cover plate is more complex. Especially after entering the era of 2.5D and 3D cover plate, due to the introduction of more and more complex process and the continuous improvement of final customers' appearance requirements, in the production process, Inevitably, there will be various defects with different characteristics, such as scratches, pits, poor silk screen printing, impurities, different colors and other appearance defects. Defects with various features require the inspector to constantly turn the cover plate, and can be captured at a specific illumination angle or angle of view. This puts forward high requirements for the design and manufacture of automatic detection equipment for glass cover plate to replace manual visual detection. The previous detection methods rely on human eye manual, the program is complex, the efficiency is low, and the output is difficult to guarantee. Upstream and downstream enterprises in the industry need a huge manual inspection team. It is estimated that more than 150000 people are engaged in such work in the Pearl River Delta alone. The inspection work under strong light not only causes great damage to the vision of quality inspection, but also brings heavy labor cost and operation cost to the enterprise.

At present, the world's leading manufacturer of glass coverage testing equipment is German equipment. Some domestic glass plate manufacturers have purchased their equipment, but there are still many problems. First, the price is expensive. Second, the equipment can only detect ordinary glass (white), while the radian of 2.5D or 3D glass cover plate cannot be detected. Therefore, the equipment can not meet all the needs of the current market. At present, China has made some technological breakthroughs in glass cover testing, but there is no particularly important enterprise to replace foreign equipment. With the improvement of production capacity and the integration of supply chain in China, especially in the Pearl River Delta, the glass coverage testing industry will usher in explosive growth. At the same time, there are many problems in the field of glass cover detection at home and abroad, and the industry urgently needs innovative mobile phone glass cover detection equipment.

The glass surface defect online detection system independently developed by Jingxin technology can completely replace the artificial naked eye for high-speed and accurate 7 * 24-hour real-time online detection of glass production, automatically alarm and display the specific information of current defects (picture display, diameter, coordinate distribution, defect type, etc.), so that workers can deal with defects in time. At the same time, the system automatically prints and saves the test report of each volume of products according to the product batch number, which is convenient for users to query, call and print in the later stage, so as to realize the rating and classification of product quality and the traceability of customer complaints, effectively save labor costs and improve product quality. Therefore, the on-line detection system of glass surface defects has become an indispensable part of the automatic glass production line.

[technical parameters]

Test objects: float glass, coated glass, tempered glass, optical glass, automotive glass, liquid crystal glass plate, etc;

Test contents: pits, scratches, dust, black spots, stains, nodes, mosquitoes, foreign matters, oil stains, folds, fibers, etc;

Etc;

Detection speed: determined according to the actual production line speed;

Inspection width: determined according to the actual width of the production line;

Detection accuracy: 0.1mm * 0.1mm (determined according to the configuration of the camera);

Treatment methods: screenshots, audible and visual alarm, defect classification, automatic recording location, picture preservation and retrieval;

Detection method: select positive or back lighting according to different light transmittance;

Other configurations: marking machine (optional);

Precautions: edge problems of glass inspection;

Typical defect: detection width: any width (various widths are met through the combination of camera types and quantities);

Detection speed: maximum 800m / min;

After the use of the equipment, the single link detection efficiency of mobile phone glass cover plate is more than 20 times higher than that in the past, and the yield is also greatly improved. The full leakage detection rate of the product is less than 1%, the over inspection rate is less than 2%, which is far lower than the error rate of 8-10% of the full manual inspection in the industry.