One-step forming precision mold pressing mould structure of glass lens

Abstract

The invention relates to a one-step forming precision mould pressing mold structure for a glass lens. A tungsten steel material or a ceramic material of which the thermal expansion coefficient is slightly lower than that of a mold is selected; the specific value of the thermal expansion coefficient of the selected material is determined to be optimal according to the boundary dimension of a mold core; a relatively easy assembly gap of 4-6 microns is ensured when the mold is assembled at normal temperature; when glass reaches the softening temperature, only 0.3-0.7 [mu]m of a single side is left in an assembly gap, and the material selectivity of a profile ring is relatively high; according to the design, the tungsten steel material with the thermal expansion coefficient larger than that ofa mold core material or a material the same as that of a mold core sleeve is selected; the specific value of the thermal expansion coefficient of the selected material is determined to be optimal according to the boundary dimension of the mold core, and the mold is easier to assemble at normal temperature; when the glass reaches the softening temperature, the assembly gap is only + / -0.5 mu m, thesame material as the mold core sleeve can also be selected, and the mold ring and the mold core sleeve are assembled together in an interference fit and hot charging manner, so that the integrated effect of the mold ring and the mold core sleeve is achieved.

Description

technical field [0001] The invention belongs to the field of glass molding, in particular to a precision molding mold structure for one-time molding of glass lenses. Background technique [0002] At present, due to the very high eccentric requirements of mobile phone lenses, the mainstream is mainly injection-molded lenses. However, as consumers have higher and higher requirements for mobile phone photography, the requirements for lens pixels are gradually increasing, and traditional injection-molded lenses can no longer fully meet the requirements. Due to the pixel requirements of mobile phone lenses, glass lenses need to be used instead of injection molded lenses. However, due to the special structure of the glass molded lens mold and the processability of the mold material, the mold manufacturing precision and assembly precision have not met the relevant requirements for mobile phone lenses, so the glass molded mobile phone lens has not formed a mass production industry. ...

AI Technical Summary

Problems solved by technology

[0002] At present, due to the high eccentricity requirements of mobile phone lenses, the mainstream is mainly injection-molded lenses. However, as consumers have higher and higher requirements for the quality of mobile phone photography, the requirements for lens pixels are gradually increasing, and traditional injection-molded lenses can no longer fully meet the requirements. The pixel requirements of mobile phone lenses, so it is necessary to use glass lenses instead of injection lenses

However, due to the special structure of glass molded lens molds and the processability of mold materials, the mold manufacturing precision and assembly precision have not met the relevant requirements for mobile phone lenses, so glass molded mobile phone lenses have not formed a mass production industry.

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