3D glass hot bending machine and 3D glass forming method

Abstract

The invention discloses a 3D glass hot bending machine and a 3D glass forming method. The 3D glass hot bending machine comprises a furnace, a first partition plate, a second partition plate, a preheating device, an annealing device and a 3D glass hot bending device. The furnace is internally provided with a chamber, and the 3D glass hot bending device comprises an upper heating module, a lower heating module, a graphite mould and a vacuum generator. The upper heating module comprises a first heating plate and a first heating part, and the first heating part is arranged in the first heating plate and capable of moving up and down; the lower heating module comprises a lower heating plate and a lower heating part, and the lower heating plate is provided with an exhaust passage with an upper port in the upper surface of the lower heating plate; the graphite mould is arranged on the upper surface of the lower heating plate, and porosity of the graphite mould is larger than or equal to 12%;an exhaust port of the vacuum generator is communicated with the exhaust passage. The 3D glass hot bending machine has advantages of long service life, high processing quality, low energy consumption,high hot bending surface quality, high hot bending speed and the like.

Description

technical field [0001] The invention relates to the field of glass processing, in particular to a 3D glass hot bending machine, and also to a 3D glass forming method implemented by using the 3D glass hot bending machine. Background technique [0002] In related technologies, the hot bending of 3D glass mainly adopts the concave-convex mold hot pressing method, and both surfaces of the glass are strongly pressed by the upper and lower molds during the forming process. Therefore, if the surface roughness of the upper and lower molds is high, the mold particles are large, or the surface of the mold is defective, it is easy to transfer the defect to the glass surface, forming pitting, hot orange peel and other defects. Moreover, 3D glass hot bending has the defects of poor hot bending surface quality and slow hot bending speed. Contents of the invention [0003] The object of the present invention is to provide a 3D glass hot bending machine and a 3D glass forming method impl...

AI Technical Summary

Problems solved by technology

Therefore, if the surface roughness of the upper and lower molds is high, the mold particles are large, or the surface of the mold is defective, it is easy to transfer the defect to the glass surface, forming pitting, hot orange peel and other defects

Moreover, 3D glass hot bending has the defects of poor hot bending surface quality and slow hot bending speed

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