Molding processing method of 3D curved glass with non-equal thickness

Abstract

The invention discloses a molding processing method of 3D curved glass with non-equal thickness. The method is realized based on a glass engraving machine, a mould processing device and a 3D glass hotbending machine. The method comprises the following steps: S1, processing a planar uniform-thick glass substrate with predetermined thickness by utilizing the glass engraving machine, and requiring acurved surface required by processing one or more surfaces of the glass substrate so as to obtain a 3D curved glass workpiece; S2, manufacturing a mould by utilizing a mould processing device, and requiring that a pressing profiling surface of the mould is matched with the surface shape of the 3D curved glass workpiece; S3, loading the mould on a 3D glass hot bending machine, drying the mould toperform hot pressing on the heated 3D curved glass workpiece by utilizing the 3D glass hot bending machine; cooling the 3D curved glass workpiece after hot pressing molding is carried out so as to obtain the 3D curved glass product.

Description

Technical field [0001] The invention relates to a glass product processing method, in particular to a non-equal thickness 3D curved glass forming method. Background technique [0002] With the advancement of science and technology, 3D curved glass of non-equal thickness is in great demand. The specific requirements of these 3D curved glass are: high product accuracy, good glass flatness, high glass strength, and can pass industry test standards. The optical performance is good, and the thickness of the glass structure is different. For example, a part of the glass needs to be thickened, and a part of the glass needs to be designed as a thinner structure. [0003] If traditional 3D glass bending technology is used, it is impossible to produce such non-equal thickness 3D curved glass. The reason is as follows: traditional technology, the thickness of the 3D glass product formed by the 3D glass bending machine is uniform, no matter how thick the glass flat material, as long as the th...

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Problems solved by technology

[0005] 1. Due to the high extrusion temperature, the internal structure of the glass material is changed, resulting in poor rigidity and toughness of the glass product, which is easy to crack and cannot be applied to mobile consumer electronic products

[0006] 2. Due to the high extrusion temperature and excessive pressure, the surface of the glass product is rough, and even many small pits appear, which cannot be removed by subsequent sweeping. The yield rate is almost zero, and mass production cannot be realized.

[0007] 3. Due to the large temperature difference between the glass and the mold, and the high temperature of the glass, the precision of the produced product is low, and secondary CNC processing is required, the processing allowance is large, and the production cost is increased, which is not conducive to the control of mass production costs.

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