3D glass profiling process and device capable of supporting upper die

Abstract

The invention discloses a 3D glass profiling process capable of supporting an upper die. The process is realized based on a device. The device comprises the upper die, a lower die and a deformable supporting piece. The process comprises the following steps: S1, placing a glass sheet on the lower die; S2, placing the deformable supporting piece between the lower die and the upper die; S3, placing the upper die above the lower die, and supporting the upper die by virtue of the deformable supporting piece so as to prevent application of the gravity of the upper die on the glass sheet; S4, heatingthe upper die, the lower die, the deformable supporting piece and the glass sheet to a hot-pressing processing temperature; S5, downwardly pressing the upper die and driving the deformable supportingpiece to deform; and S6, subjecting the glass sheet to hot press molding through cooperation between the upper die and the lower die. According to the invention, before hot-pressing processing, the glass sheet does not bear the gravity of the upper die, so fragmentation of the glass sheet is avoided; and meanwhile, before the upper die is pressed downwards, the glass sheet is not covered by the upper die, so hot-pressing molding efficiency is improved.

Description

technical field [0001] The invention relates to a glass thermoforming processing device, in particular to a 3D glass forming process and device capable of supporting an upper mold. Background technique [0002] In the prior art, when performing 3D hot-pressing processing on glass, the glass sheet is generally placed between the upper mold and the lower mold, and under high temperature conditions, the glass is hot-pressed by using the pressure between the upper mold and the lower mold. forming. Taking vehicle-mounted glass as an example, the structure of the hot-pressing mold for vehicle-mounted glass is similar to that of small-sized hot-pressing molds such as mobile phone glass. It usually adopts a two-layer structure of upper mold and lower mold, or a three-layer mold structure of upper mold, middle mold, and lower mold. For glass products, during the molding process, because the weight of the upper mold is greater than the load-bearing capacity of the glass, the glass is...

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Problems solved by technology

Taking vehicle-mounted glass as an example, the structure of the hot-pressing mold for vehicle-mounted glass is similar to that of small-sized hot-pressing molds such as mobile phone glass. It usually adopts a two-layer structure of upper mold and lower mold, or a three-layer mold structure of upper mold, middle mold, and lower mold. For glass products, during the molding process, because the weight of the upper mold is greater than the load-bearing capacity of the glass, the glass is often crushed, or due to factors such as the asymmetry between the glass surface and the shape of the upper and lower mold cavities, when the mold contacts the glass at one point or one side The glass is crushed. At the same time, when the upper mold is placed on the glass, the upper mold is always attached to the glass, resulting in slow temperature rise and uneven temperature of the glass, resulting in low efficiency of hot pressing and high fragmentation rate. In addition, under the upper mold During the pressing process, it is impossible to guarantee that the upper die will drop straightly, which will affect the processing and forming effect

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