Tempered glass flatness online detection system and detection method thereof

Abstract

The invention discloses a tempered glass flatness online detection system and a detection method thereof. The system comprises a lamp box used for radiography, a camera used for collecting the morphology of to-be-measured tempered glass, a high-speed computer used for analysis and calculation and a real-time track speed measuring device used for measuring the speed of a tempered glass conveying roller way, wherein the real-time track speed measuring device is in signal connection with the high-speed computer, the camera is in signal connection with the high-speed computer, and a plurality of rows of circular holes are formed in the bottom of the lamp box. Compared with an eagle system, the tempered glass flatness online detection system of the invention has the advantages that the offset of the midpoint position of each light spot is directly measured, the signal is large, the measurement precision is high, the error is low, the number of the light spots is increased due to simple measurement parameters, and the camera adopts a continuous high-speed sampling mode, so that more dense measurement information can be obtained, and the measurement accuracy is improved; and compared withan ilook system, the tempered glass flatness online detection system of the invention has the advantages that the lamp box and the camera are used for replacing laser and a laser receiver, so that the cost is low, and debugging is convenient.

Description

technical field [0001] The invention relates to the technical field of glass detection, in particular to an online detection system and a detection method for tempered glass flatness. Background technique [0002] Tempered glass is obtained by heating ordinary annealed glass to about 700 degrees close to the softening point, and then cooling it quickly and uniformly. The impact strength is improved, however, in the process of heating and cooling, as the glass runs on the ceramic conveying rollers, the gravity causes the glass to sink between the two rollers, resulting in deformation on the glass surface, and the higher the furnace temperature, the deformation may occur The larger is, the deformation is periodic, and it is related to the spacing of the rollers and the concentricity deviation of the rollers. At the same time, due to the structure of the furnace body, the lower surface of the glass is in contact with the roller table, and a large part of the heat is absorbed b...

AI Technical Summary

Problems solved by technology

However, due to the inability to provide quantitative test results, there is a large standard deviation between operators, so consistent quality control cannot be achieved

[0006] At present, the Osprey system of LiteSentry in the United States and the Ilook system of Glaston are the most used in the global tempered glass industry. The Osprey system installs a light box above the production line, uses an oval light spot to form a pattern, and installs a camera above the production line to reflect the glass sample to the lens. Measure the major axis, minor axis size, circumference and direction of each elliptical light spot, compare it with the original light box’s light spot, and calculate the refractive power of the glass surface; this system measures the length of the major and minor axes of the light spot, because the light spot is very small Small, difficult to control measurement accuracy and error

[0007] The Ilook system uses lasers and receivers installed on the production line, and calculates the refractive power of the glass surface by measuring the position of the laser spot reflected by the glass surface; this method is expensive, requires extremely high installation and debugging accuracy, and is difficult for daily maintenance and debugging

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