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Production line for accurately controlling thermal forming of curved glass cover plate through microwave technology

A technology for controlling the heat of curved surfaces and cover plates, which is applied in glass production, glass forming, and glass reshaping, etc. It can solve problems such as deformation of curved glass cover plates, large-scale production sites, and stress concentration, and achieve energy-saving and carbon-reducing production Cost reduction, energy loss reduction, and the effect of continuous and rapid cooling

Pending Publication Date: 2022-05-03
曲面超精密光电(深圳)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In this process, first of all, due to the uneven temperature distribution in the heater and equipment cavity, the process of heating, heat preservation, pressure holding and cooling of the mold for a long time is not only low in productivity, but also due to the uneven heating of the glass in the mold. , resulting in poor thermoforming quality of the curved glass cover and low yield
Secondly, during the cooling process of the curved glass cover, due to uneven cooling, thermal stress remains inside the curved glass cover, resulting in deformation of the curved glass cover, stress concentration, and inability to disperse. Finally, the glass breaks or after forming The strength of the curved glass cover plate is obviously reduced, resulting in fragility and insufficient protection, which further reduces the yield of the curved glass cover plate
Third, because the heating and cooling process requires a very long heating and annealing production line (large-scale vehicle-mounted curved surface cover production line even needs to reach tens of meters or hundreds of meters), it also requires the use of a large production site and energy consumption

Method used

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  • Production line for accurately controlling thermal forming of curved glass cover plate through microwave technology
  • Production line for accurately controlling thermal forming of curved glass cover plate through microwave technology
  • Production line for accurately controlling thermal forming of curved glass cover plate through microwave technology

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Effect test

Embodiment 1

[0035] Such as Figure 1-7 As shown, the present invention proposes a production line for precisely controlling the thermoforming of curved glass cover plates through microwave technology, including a control system 100, a thermoforming mechanism 200, an annealing mechanism 300, a strain mechanism 400, a cooling mechanism 500 and a transmission mechanism 600; The forming mechanism 200, the annealing mechanism 300, the straining mechanism 400 and the cooling mechanism 500 are sequentially connected in series through the conveying mechanism 600, and are controlled and connected with the control system 100 to form a circulating processing line.

[0036]The transfer mechanism 600 includes a transfer frame 601, a mold base 602, a mold top cover 603, a grabbing device one 604, a grabbing device two 605 and a grabbing device three 606; the mold base 602 is arranged on the transfer frame 601; the grabbing device one 604 It is set on one side of the thermoforming mechanism 200 ; the gr...

Embodiment 2

[0040] Such as Figure 1-7 As shown, the present invention proposes a production line for precisely controlling the thermoforming of curved glass cover plates through microwave technology, including a control system 100, a thermoforming mechanism 200, an annealing mechanism 300, a strain mechanism 400, a cooling mechanism 500 and a transmission mechanism 600; The forming mechanism 200, the annealing mechanism 300, the straining mechanism 400 and the cooling mechanism 500 are sequentially connected in series through the conveying mechanism 600, and are controlled and connected with the control system 100 to form a circulating processing line.

[0041] Furthermore, the control system 100 controls the material transfer, heating, softening, cooling annealing, cooling and straining, cooling of the curved glass cover plate, and thermoelectric conversion and energy recovery process of waste heat in the entire device.

[0042] The transfer mechanism 600 includes a transfer frame 601, ...

Embodiment 3

[0049] The present invention also proposes a production line for precisely controlling the thermoforming of curved glass cover plates through microwave technology. The working method is as follows:

[0050] S1. The mold base 602 moves along with the transfer frame 601; the grabbing device 1 604 grabs the flat glass cover 700 onto the mold base 602; the grabbing device 2 605 grabs the mold top cover 603 to cover the flat glass cover 700, and The mold base 602 constitutes a heating cavity;

[0051] S2. Plane glass cover plate 700, mold base 602, and mold top cover 603 pass through electronically controlled heat preservation door 1 202 and move into heat preservation cover 1 205; the heating chamber is heated by microwave equipment 1 203, and according to infrared temperature feedback equipment 1 208 temperature feedback, cooling equipment 1 207 and microwave equipment 1 203 maintain the temperature inside the heating chamber at the temperature of the thermoforming point. After m...

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Abstract

The invention relates to the technical field of processing of protective cover plates of display screens, in particular to a production line for accurately controlling thermal forming of a curved glass cover plate through a microwave technology. The device comprises a control system, a hot forming mechanism, an annealing mechanism, a strain mechanism, a cooling mechanism and a conveying mechanism. The hot forming mechanism, the annealing mechanism, the strain mechanism and the cooling mechanism are sequentially connected in series through the conveying mechanism and are in control connection with the control system to form a circulating machining line. According to the invention, the wave-absorbing material is heated through the characteristics of controllable microwave power and controllable heating area, and uniform and rapid temperature rise is carried out through a mold made of the wave-absorbing material, or a mold with a wave-absorbing material coating on the surface, or a heating cavity with the wave-absorbing material; according to the invention, rapid heating of a precise controllable area of a flat glass cover plate or a curved glass cover plate is realized, glass is heated and softened, self-weight or compression molding is utilized, cooling and annealing are carried out, and a complete production and processing process of changing the flat glass into the curved glass cover plate is realized.

Description

technical field [0001] The invention relates to the technical field of display screen protective cover processing, in particular to a production line for precisely controlling the thermoforming of a curved glass cover through microwave technology. Background technique [0002] Nowadays, the display screens of electronic equipment are mainly flat. With the development of continuous innovation technology, curved screens are widely used in more and more electronic devices. At present, curved screens are mainly obtained through curved protective covers, and The current production of curved glass covers (3D glass covers) in the industry mainly uses electric heating tubes or infrared lamps to heat molds made of graphite, ceramics or metal materials, and then heats up and softens flat glass covers to produce deformation to achieve the desired curved glass cover. [0003] In this process, first of all, due to the uneven temperature distribution in the heater and equipment cavity, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B23/03
CPCC03B23/03Y02P40/57
Inventor 黄连恕刘宝华
Owner 曲面超精密光电(深圳)有限公司