Horizontal roll table type glass tempering cooling method during glass tempering production

Abstract

The invention relates to a horizontal roller table type glass tempering cooling method during glass tempering production. According to the method, the equipment comprises a tempering cooling section and a roller table transmission mechanism, glass being subjected to a heat treatment in a heating section is conveyed into the tempering cooling section through the roller table transmission mechanism, the tempering cooling section is further provided with a sealed low temperature chamber, wind blowing cooling processes of an upper windshield and a lower windshield in the tempering cooling section on the glass are performed in the low temperature chamber, wind pressures of the upper windshield and the lower windshield on both sides of the glass are real-timely detected during a glass movement process in the channel of the low temperature chamber, and the glass can be at the stable state on the roller table by automatically adjusting the wind pressures of the upper windshield and the lower windshield on both sides through a controller. With the method, the treatment time of the tempering cooling section can be substantially shortened, and the air flow pressures required by the windshields on both sides during the cooling process are small, such that the control is easy, it is effectively ensured that the force applying during the glass tempering process is balanced, and the performance of the produced tempering glass is substantially improved.

Description

technical field [0001] The invention relates to a glass tempering production process, in particular to a horizontal roller table type glass tempering cooling method in the glass tempering production. Background technique [0002] In the glass tempering production currently used, the upper and lower air grills of the horizontal roller type glass tempering cooling grille (tempering cooling section) are composed of N groups of air nozzles with equal spacing, and each group of air nozzles and the air box are sealed with sealant. The rivets are fixed, and the upper and lower air grids are arranged symmetrically up and down relative to the roller table. Its function makes the glass that has reached the tempering temperature (about 720°C) pass through the upper surface of the rotating roller table, and the high-pressure airflow blown by the upper and lower air grille nozzles Evenly cover the upper and lower surfaces of the glass, so that the glass surface can be cooled rapidly to a...

AI Technical Summary

Problems solved by technology

During the tempering process, in order to ensure the particle size requirements of the tempered glass, in addition to the air flow should meet a certain pressure, in order to ensure the flatness of the tempered glass, the force on the upper and lower surfaces of the glass is balanced (that is, the airflow blown by the upper and lower air grille nozzles) The pressure should be equal) the requirements are more stringent, the purpose is to prevent the glass from floating, jumping, etc. in the air grid, but it is very difficult to achieve the ideal control effect in the above process, because the tempering cooling process is in a In an open environment, the cooling is achieved by blowing out high-pressure air lower than the temperature of the glass from the nozzles on both sides. In order to achieve the desired cooling effect, it is necessary to increase the airflow pressure to complete the cooling process. However, increasing the pressure will make The glass floats on the roller table and other unstable phenomena are found in actual production: it is difficult to effectively control the blowing pressure of the upper and lower air grids, and the result is always a large error, and the accuracy is not easy to guarantee, resulting in an unbalanced force on the glass, causing glass Unstable quality, especially when making thin glass below 3mm, when the wind pressure should reach above 14,000Pa, it is more obvious and even impossible to achieve. Therefore, tempering of thin glass below 3mm has become a major problem in the glass tempering industry

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