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A method for improving the quality of the lower surface of ultra-thin glass

A technology of surface quality and ultra-thin glass, which is applied in the direction of program control, program control, and instrumentation in sequence/logic controllers, to achieve the effects of easy implementation, reduction of scratches, and avoidance of sliding friction

Active Publication Date: 2019-04-19
YICHANG CSG PHOTOELECTRIC GLASS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In summary, the existing improvement schemes are all speed control schemes

Method used

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  • A method for improving the quality of the lower surface of ultra-thin glass
  • A method for improving the quality of the lower surface of ultra-thin glass
  • A method for improving the quality of the lower surface of ultra-thin glass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Such as Figure 1~6 Among them, a method for improving the quality of the lower surface of ultra-thin glass includes a plurality of transition rollers 5 located between the tin bath 6 and the annealing furnace 17, and one end of the plurality of transition rollers 5 is respectively connected with a slave transmission device, and the slave transmission device Drive the transition roller 5 to rotate, and the slave transmission device is equipped with a speed sensor and a torque sensor. Under the working condition of conveying the glass plate 7, according to the feedback of the torque sensor, the PLC adjusts the speed of each slave transmission device, so that the transmission to each transition roller 5 The torque remains consistent.

[0041] The preferred solution is as figure 1 In the above-mentioned slave transmission device, one end of the first coupling 3 is connected to the transition roller 5, the other end of the first coupling 3 is fixedly connected to the reducer...

Embodiment 2

[0053] On the basis of Embodiment 1, under the working condition of conveying the glass plate 7, the PLC controls the main transmission device to output torque at the initial speed, and the PLC controls the slave transmission device to output torque at a delivery speed slightly higher than the initial speed; when the slave transmission device The output speed is gradually higher than the output speed of the main transmission, the overrunning clutch 13 of the main transmission is disengaged, and the transition roller 5 is mainly driven to rotate by the slave transmission.

[0054] In this state, choose any torque value from the torque sensor 8 in the transmission as the working torque value;

[0055] Compare other torque values ​​detected by the torque sensor 8 in the transmission with the operating torque value, and when higher than the operating torque value, the PLC controls the slave transmission to reduce the speed;

[0056] When it is lower than the working torque value, ...

Embodiment 3

[0058] On the basis of Example 1, in the preferred scheme, such as Figure 7 As shown in , a working torque value is set in the PLC according to the working conditions, and the torque value detected by each torque sensor 8 of the transmission device is compared with the working torque value. When the working torque value is higher than the working torque value, the PLC controls Reduce the speed from the transmission;

[0059] When it is lower than the working torque value, the PLC controls the slave transmission to increase the speed; through the above steps, the torque of the slave transmission is kept consistent. The advantage of this scheme is that it is easy to control and has high reliability.

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Abstract

The invention provides a method for improving the quality of an ultrathin glass lower surface. The system according to the method comprises multiple transition rollers which are arranged between a tin bath and an annealing kiln. One end of each transition roller is connected with one slave transmission device. The slave transmission device drives the transition rollers to rotate. A speed sensor and a torque sensor are arranged on the slave transmission device. A PLC adjusts rotating speed of each slave transmission device according to the feedback of the torque sensor under the condition of conveying a glass plate so that the torque conveying to each transition roller is maintained to be consistent. The scheme of speed control is replaced by the scheme of torque control so that the torque of all the transition rollers is maintained to be consistent, sliding friction between the transition rollers and the glass plate lower surface can be fundamentally avoided and the problem of transmission speed fluctuation can also be overcome to some extent.

Description

technical field [0001] The invention relates to the field of float ultra-thin electronic glass preparation, in particular to a method for improving the quality of the lower surface of the ultra-thin glass by controlling an ultra-thin glass conveying device located between a tin bath and an annealing kiln. Background technique [0002] Ultra-thin electronic glass refers to electronic glass with a thickness of less than 2mm, and further refers to electronic glass within the range of 0.1~1.1mm. At present, customers have higher and higher requirements for the quality of ultra-thin electronic glass, and the slight defects on the surface of ultra-thin electronic glass may cause customer complaints. Especially for the production of high-grade electronic A-level cover glass, the requirements for the apparent quality of the glass are very strict. The number of tin defects on the lower surface needs to be controlled, and there should be no defects such as tin slag printing and scrat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/05
CPCG05B19/054G05B2219/1103
Inventor 余春轶许辉杨焕文
Owner YICHANG CSG PHOTOELECTRIC GLASS
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