Ultrasonic-assisted glass hot bending device and control method based on millimeter wave heat source

An ultrasonic-assisted, millimeter-wave technology, used in glass manufacturing equipment, glass molding, glass re-molding, etc., can solve the problem of difficult to meet the surface quality manufacturing requirements of 3D ultra-thin and ultra-thin glass, crystallization, holes, cracks, influences Problems such as hot bending forming quality, to achieve the effect of promoting glass flow, improving material flow, and facilitating processing parameters

Active Publication Date: 2022-04-26
GUANGDONG HUST IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional hot bending process for 3D ultra-thin glass hot-bending molding is prone to surface defects such as crystallization, holes, and cracks, and the scrap rate is relatively high, because 3D ultra-thin glass is difficult to measure in terms of scale, shape complexity, temperature sensitivity, and stress tolerance. It is quite different from ordinary glass in terms of properties, and it is difficult to achieve uniform heating and pressure during the hot bending process, resulting in large temperature gradients, non-uniform stress distribution, and severe glass rheology during the hot bending process. Will directly affect the quality of hot bending
Therefore, the traditional hot bending molding of ordinary glass is not applicable, and it is difficult to meet the manufacturing requirements of 3D ultra-thin ultra-thin glass surface quality

Method used

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  • Ultrasonic-assisted glass hot bending device and control method based on millimeter wave heat source
  • Ultrasonic-assisted glass hot bending device and control method based on millimeter wave heat source
  • Ultrasonic-assisted glass hot bending device and control method based on millimeter wave heat source

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Effect test

Embodiment 1

[0053] Processing environment: domestic hot-bending machine tool, using millimeter-wave heat source, graphite mold, ultrasonic transducer installed at the bottom, the glass sheet to be processed is ultra-thin glass, and the ultra-thin glass is bent into 2.5D ultra-thin glass. The preheating zone, hot bending pressurization zone, holding pressure zone and cooling zone are each equipped with 3 stations, which are arranged sequentially. The preheating zone is the first station, the second station and the third station, and the hot bending pressurization zone is the first station. The four stations, the fifth station and the sixth station, the holding zone is the seventh station, the eighth station and the ninth station, and the cooling zone is the tenth station, the eleventh station and the twelfth station.

[0054] The machine tool provides a servo system for controlling the movement of the mold. The machine tool is an existing known device. The hot bending device includes a mill...

Embodiment 2

[0057] Processing environment: domestic hot-bending machine tool, using millimeter-wave heat source, graphite mold, ultrasonic transducer installed at the bottom, the glass sheet to be processed is ultra-thin glass, and the ultra-thin glass is bent into 3D ultra-thin glass. The preheating zone, hot bending pressurization zone, holding pressure zone and cooling zone are each equipped with 3 stations, which are arranged sequentially. The preheating zone is the first station, the second station and the third station, and the hot bending pressurization zone is the first station. The four stations, the fifth station and the sixth station, the seventh station, the eighth station and the ninth station in the pressure holding area, and the tenth station, the eleventh station and the twelfth station in the cooling area.

[0058]The machine tool provides a servo system that controls the movement of the mold, and the auxiliary devices include millimeter wave heat sources, ultrasonic trans...

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Abstract

An ultrasonic-assisted glass hot-bending device and control method based on a millimeter-wave heat source, including a frame, a feeding area and a discharging area are respectively arranged on both sides of the frame, a furnace chamber is arranged on the frame, and a furnace chamber is arranged on one side of the frame. There is a control box, the furnace cavity is equipped with a graphite mold and a frequency conversion millimeter wave heat source connected to the control box, the graphite mold has a cavity, the frequency of the frequency conversion millimeter wave heat source is 2.5GHz-20GHz, and the power is on the order of kilowatts. The cavity is equipped with a preheating zone, hot bending pressure zone, pressure holding zone and cooling zone, and the frame is equipped with a fork actuator for moving the graphite mold. The preheating zone, hot bending pressure zone, pressure holding zone , the cooling zone and the fork actuator are respectively connected with the control box. The invention heats the mold more uniformly, uses ultrasonic vibration to assist to significantly improve the molding rate and material surface quality, cooperates with sub-regional control of parameters such as temperature and pressure, and meets the manufacturing requirements of 3D ultra-thin glass with high surface quality.

Description

technical field [0001] The invention relates to a glass hot-bending device, in particular to a multi-station ultrasonic-assisted 3D glass hot-bending device and a control method based on a millimeter-wave heat source. Background technique [0002] With the replacement of LCD screens by flexible OLEDs and the application of new communication technologies such as 5G and wireless charging, traditional metal structural parts are difficult to meet the needs of the new generation of smart terminals due to the shortcomings of metal shielding, difficult curve shape, and unsightly appearance. 3D ultra-thin glass can not only eliminate signal shielding defects, but also has excellent special features such as thinness, cleanliness, anti-vertigo, good heat dissipation, wear resistance, etc., and is currently the only one that can better fit curved screens and adapt to ultra-large-scale mass production The intelligent terminal material of the model can not only be applied on the mobile p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03B23/03
CPCC03B23/0307
Inventor 张臻张国军明五一于海深卢亚张红梅赵健州尹玲耿涛廖敦明
Owner GUANGDONG HUST IND TECH RES INST
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