Machining device for columnar curved toughened glass

Abstract

The invention discloses a machining device for columnar curved toughened glass. The device mainly comprises a glass heating furnace, a glass bend forming mechanism and a glass cooling and toughening mechanism which are connected in sequence, wherein the glass bend forming mechanism is used for performing bend forming on carried glass by changing planar arrangement of each supporting roll in a roll table for carrying the high-temperature sheet glass into curved arrangement corresponding to the glass shape to be formed in space; and a conveying roller for outputting the formed curved glass along the axis of the supporting roll is arranged in a roll table gap of the forming mechanism. According to the machining device, the bend forming and the cooling and toughening of the high-temperature sheet glass are separately finished by two stations, so that the routine that the conventional bend forming and the cooling and toughening are integrated on a forming device is broken, and a new technical approach is provided for machining of the columnar curved toughened glass.

Description

[0001] technical field [0002] The invention relates to a device for making columnar curved tempered glass. [0003] Background technique [0004] In reality, the columnar curved tempered glass used by people includes two types, one is such as figure 1 The equal-arc columnar curved tempered glass shown in , namely: columnar curved tempered glass with a circular arc-shaped cross-section; one type is such as figure 2 The tempered glass with unequal arc cylindrical surface shown in (a, b, c, d) means: the section curve contains several arc segments and / or straight segments with different curvatures. [0005] When people process equi-arc columnar curved tempered glass, they usually use a roller-type bending forming device. This forming device includes a roller-type forming mechanism and an air grid cooling mechanism. The rollers in the roller forming mechanism are located in the air grid cooling mechanism. Between the upper and lower air grilles. Among them, the roller...

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Problems solved by technology

[0007] For the first type of forming mechanism, since the bent and formed curved glass swings vertically to the axis of the support rollers during cooling and tempering, when processing equal-arc curved glass, the swinging curved glass is always kept in contact with the support roller table and the air grid array above and below it. parallel to each other, and when processing unequal arc curved glass, the swinging curved glass will appear not parallel to the roller table and wind grid array, which not only affects the precise molding of the curved glass, but also swings the curved glass. It will collide with the wind grille above it and break, so people can only use the second forming mechanism to process tempered glass with unequal arc columnar surface

[0008] When using the second forming mechanism to process tempered glass with unequal arc columnar curved surface, although the problem of colliding with the air grid array above it when the curved glass cools and swings is eliminated, due to the bending of high-temperature flat glass, it is supported by several support rollers arranged at intervals in the roller table. After the driving is completed, the two sides of the formed curved glass and the support rollers often have obvious wavy deformation, which is difficult to meet the requirements of high-quality curved glass products.

Of course, when the second type of forming mechanism is used to process the equi-arc-curved tempered glass, there is also the problem of wavy deformation on both sides of the curved glass and the supporting rollers.

[0009] In addition, since the front and rear ends of the high-temperature flat glass leave the glass heating furnace at different times and are cooled by the outside world, after the high-temperature flat glass enters the forming mechanism, there is a temperature gradient from the front end to the rear end, and the temperature at the front end of the glass is lower than that of the glass. The temperature of the rear end, and the larger the size of the front and rear directions of the glass, the greater the temperature gradient in the front and rear directions, and the temperature of the glass before bending is directly related to the result of its bending and forming. The rear end with high temperature is compared with the front end with low temperature It is easier to bend, so that the curvature of curved tempered glass near its front end is often slightly smaller than that near its rear end after bending, which also affects the quality of curved tempered glass products

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