Glass hot bending mold and glass hot bending forming method

A glass and mold technology, applied in the field of hot bending molds, can solve problems such as long polishing process, achieve the effects of reducing production costs, improving production efficiency, and improving production efficiency

Pending Publication Date: 2022-05-10
LENS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The first object of the present invention is to provide a glass hot-bending mold to improve the technical problem that existing molds produce mold impressions on the glass surface after hot-bending, thus requiring a long polishing process to repair them

Method used

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  • Glass hot bending mold and glass hot bending forming method
  • Glass hot bending mold and glass hot bending forming method
  • Glass hot bending mold and glass hot bending forming method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0099] As an optional embodiment of the present invention, the preparation method of protective sheet (concave protective sheet and convex mold protective sheet) comprises the following steps:

[0100] (a) Material selection: Glass is used as the material of the protective sheet (such as Corning series, AGC series, and Schott series commonly used in the glass industry can be used), and its thickness ranges from 0.2mm to 1.3mm. According to the different materials of the glass to be bent, it is necessary to pay attention to the softening temperature of the protective sheet when selecting materials that are 30°C higher than the softening temperature of the glass to be bent;

[0101] (b) Cutting & CNC: Use cutting machine to cut the material, with approximate dimensions, dimensional accuracy tolerance ±0.2mm, and then use CNC machine and grinding wheel rod to refine the size and edge chamfering, and the dimensional accuracy after processing is high (± 0.02mm), the edge is chamfer...

Embodiment 1

[0115] This embodiment provides a glass hot bending mold, including a die assembly and a punch assembly;

[0116] Die assembly is mainly composed of graphite die, die protection sheet consistent with the contour of graphite die, and die fixing insert. Convex die assembly is mainly composed of graphite punch, punch with contour consistent with graphite punch Composed of protective sheet and punch fixing insert;

[0117] The graphite concave mold and the graphite convex mold cooperate with each other to form a mold cavity for processing the glass to be bent. The graphite concave mold is provided with a concave mold protection sheet on the side facing the mold cavity. The concave mold protection sheet can be fixed and inlaid The parts are fixed on the graphite die; the side of the graphite punch facing the mold cavity is provided with a punch protection sheet, and the punch protection sheet can be fixed on the graphite punch through the punch fixing insert;

[0118] The roughnes...

Embodiment 2

[0122] This embodiment provides a glass hot-bending forming method, using the glass hot-bending mold provided in Example 1 to perform hot-bending forming on the glass to be bent, including the following steps:

[0123] (a) graphite die, die protection sheet and die fixing insert are assembled into die assembly, and graphite punch, punch protection sheet and punch fixing insert are assembled into punch assembly;

[0124] (b) placing the glass to be bent in the die assembly, then placing the punch assembly on the glass to be bent, and closing the molds;

[0125] (c) Place the mold-closed glass hot-bending mold in a hot-bending machine for hot-bending forming.

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Abstract

The invention provides a glass hot bending mold and a glass hot bending forming method, and relates to the technical field of hot bending molds. The glass hot bending die comprises a female die assembly and a male die assembly, the female die assembly is mainly composed of a graphite female die, a female die protection sheet consistent with the graphite female die in profile tolerance and a female die fixing insert, and the male die assembly is mainly composed of a graphite male die, a male die protection sheet consistent with the graphite male die in profile tolerance and a male die fixing insert; in the hot bending forming process, the female die protection sheet and the male die protection sheet replace a graphite female die and a graphite male die respectively to be in direct contact with the glass to be subjected to hot bending, and the contact surface of the female die protection sheet and the glass to be subjected to hot bending and the contact surface of the male die protection sheet and the glass to be subjected to hot bending are bright and have low roughness. The surface of the formed glass is still bright and has no bad die impressions, the die impressions generated on the surface of the glass by the die after hot bending are avoided, and the product polishing time after hot bending can be shortened, so that the production efficiency is improved, and the production cost is reduced.

Description

technical field [0001] The invention relates to the technical field of hot bending molds, in particular to a glass hot bending mold and a glass hot bending forming method. Background technique [0002] At present, the hot bending forming process in the hot bending industry is as follows (see figure 1 ): Place the glass to be bent on the graphite concave mold (isostatic graphite material), then place the graphite punch (isostatic graphite material) on the glass to be bent, and then place the assembled mold as a whole on a dedicated The hot bending machine equipment, the equipment passes the temperature to the mold and the glass (the operating parameters of the special machine that have been set, including the temperature curve and pressure curve), so that the glass gradually heats up and softens to a viscous flow state, and gives The mold exerts pressure to gradually press the product from the flat state to the bottom of the mold, and make the glass fit the mold cavity compl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B23/03
CPCC03B23/0302
Inventor 钟康戴喜亮向振宇
Owner LENS TECH
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