Hot press molding method

A hot-press forming and forming temperature technology, applied in glass forming, glass re-molding, glass manufacturing equipment, etc., can solve the problems of pressing mold printing, X-shaped pattern, dark pattern, etc., and reduce the pressing mold printing. , The effect of improving the molding process and reducing the energy consumption of the equipment

Inactive Publication Date: 2020-05-05
FUTAIHUA PRECISION ELECTRONICS ZHENGZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on the above problems, it is necessary to provide a brand-new hot pressing forming method, through the process adjustment in the hot pressing process, to realize the production of high-quality curved glass, and effectively solve the pressing mold marks, dark lines, Pitting, X-shaped lines and other problems

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Examples

Experimental program
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Embodiment 1

[0109] see figure 1 As shown, the present embodiment provides a method of thermocompression molding, including:

[0110] S110: placing the workpiece to be processed in the mold.

[0111] The workpiece includes a flat part of the workpiece and a part to be bent of the workpiece. When the workpiece is put into the mold, the flat part of the workpiece is in direct contact with the surface of the mold. When the workpiece is a planar workpiece, the part of the workpiece to be bent is the part that will be bent when the mold is pressed together, usually including the entire area of ​​the edge of the workpiece or a part of the edge of the workpiece.

[0112] S120: heating the mold and the workpiece to a preheating temperature.

[0113] Among them, heating the mold and workpiece to the preheating temperature adopts infrared heating and electric heating to supply heat. During the preheating phase, the mold and the workpiece are usually heated together, because it is necessary to ens...

Embodiment 2

[0132] In another embodiment of the present invention, a kind of thermocompression forming method is provided, comprising the steps of:

[0133] S210: placing the workpiece to be processed in the mold.

[0134] The mold used in this embodiment includes an upper mold and a lower mold. The lower mold is provided with a boss for carrying the flat part of the workpiece, and the upper mold matched with the lower mold is provided with a cavity corresponding to the boss. The workpiece to be processed is placed on the boss of the lower mold in the mould. The workpiece includes a flat part of the workpiece and a part to be bent. The flat part of the workpiece is in direct contact with the upper surface of the boss in the lower mold. A receiving groove is provided in the lower mold, the boss is located in the receiving groove, and the groove formed by the boss and the side of the receiving groove forms a guiding groove for bending the workpiece.

[0135] In this embodiment, the workpie...

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Abstract

A hot press molding method comprises the following steps: a workpiece to be machined is placed on a lower die of a mold, the workpiece comprises a workpiece plane part and a workpiece to-be-bent part,and the workpiece plane part makes direct contact with the surface of the lower die; the mold and the workpiece are heated to a preheating temperature; air is exhausted to enable the workpiece planepart to be adsorbed by the lower die; and the mold and the workpiece are kept at a forming temperature lower than the preheating temperature, pressure is applied, and the workpiece in the mold is pressed to be formed into a preset shape. According to the method provided by the invention, heat absorption and hot pressing in sequence can be realized, the workpiece plane part is adsorbed by the lowerdie, it is guaranteed that the large-area workpiece does not deform, the effect that the workpiece to-be-bent part is mainly stressed and bent can be achieved only by applying small pressure to the upper die, and various problems such as press-fit die marks, dark lines, pocking marks and X-shaped lines which are prone to occurring in a traditional machining process can be greatly reduced. Meanwhile, a heating mode and a forming process are improved, so that the energy consumption of equipment can be effectively reduced while the processing efficiency is greatly improved.

Description

technical field [0001] The invention relates to the technical field of curved glass processing, in particular to a hot pressing forming method. Background technique [0002] With the rapid development of mobile terminals, there is a greater demand for high-performance and beautiful glass products, such as 2.5D and 3D mobile phone screens in curved screen mobile phones. The existing curved glass is generally processed by cold working, that is, the edge of the flat glass is ground and polished to obtain the desired curved edge. However, the shape of curved glass obtained by cold working is also subject to certain restrictions, such as the height of the curved surface. [0003] In the prior art, although there is also a technology of using hot pressing or heat suction to process curved glass, it is often to place the workpiece (such as glass) in the lower concave mold, and use the upper convex mold to press the glass. Perform hot pressing, or directly heat-absorb the glass in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B23/03C03B23/035
CPCC03B23/03C03B23/0307C03B23/035
Inventor 张士浤金文俊张锴华
Owner FUTAIHUA PRECISION ELECTRONICS ZHENGZHOU
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