Lens mold core

Abstract

The invention discloses a lens mold core, and belongs to the field of lens molds. The lens mold core comprises an upper mold base and a lower mold base, a lower lens groove is arranged at the upper end of the lower mold base, the upper mold base consists of a bush component and a secondary mold core nested in the bush component, a first positioning hole, a second positioning hole and a third positioning hole are arranged inside the bush component, the secondary mold core comprises a first positioning column, a second positioning column and a third positioning column which are integrally formed and are correspondingly sleeved with the first positioning hole, the second positioning hole and the third positioning hole, and an upper lens groove is arranged at the front end of the first positioning column. The lens mold core has the advantages that processing precision of the lens mold core can be improved, the exhaust performance is excellent, and yield of large-diameter finished lens products is increased.

Description

technical field [0001] The invention relates to a lens mold, in particular to a lens mold core for manufacturing optical lenses. Background technique [0002] Ordinary precision optical plastic injection lens mold structure, the upper mold base of ordinary lens mold core is made of nickel-plated integrated structure, the accuracy of ordinary lens mold core is completely determined by the accuracy of correction during turning processing and the accuracy of processing equipment, resulting in the inability to self-adjust the accuracy, The manufacturing precision of the lens is not high during processing. When the product lens is a large lens, the glue position is deep and the area is large, which requires good exhaust performance, but ordinary lens molds have poor exhaust performance and cannot meet production needs. Moreover, the bottom of the upper mold base is formed through lateral processing when making ordinary lens mold cores, which is prone to flares and affects the...

AI Technical Summary

Problems solved by technology

[0002] Ordinary precision optical plastic injection lens mold structure, the upper mold base of ordinary lens mold core is made of nickel-plated integrated structure, the accuracy of ordinary lens mold core is completely determined by the accuracy of correction during turning processing and the accuracy of processing equipment, resulting in the inability to self-adjust the accuracy, Manufacturing lens precision is not high during processing

When the product lens is a large lens, the glue position is deep and the area is large, and good exhaust performance is required, but the exhaust performance of the ordinary lens mold core is not good, which cannot meet the production demand

Moreover, the bottom of the upper mold base is formed through horizontal processing when making ordinary lens mold cores, which is prone to flares and affects the accuracy of the upper mold base. When using ordinary lens mold cores to manufacture lenses, the accuracy of the lenses is not high

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