Processing technology of lens with saw teeth

Abstract

The invention discloses a processing technology of a lens with saw teeth. The processing technology comprises the following steps that A, a core insert is mounted on a core holder, the core insert comprises a first forming insert and a second forming insert, the first forming insert comprises a first splicing piece, the first splicing piece is provided with a plurality of saw tooth grooves, the parts, located between the adjacent saw tooth grooves, of the first splicing piece form first forming saw teeth, the second forming insert comprises a second splicing piece, second forming saw teeth arearranged on the second splicing piece, and the second forming saw teeth and the first forming saw teeth are spliced and matched to form a circumferential sawtooth part; B, mold combination is carriedout, wherein the cavity insert and the core insert are combined, and the lower surface of a cavity and the outer surface of the circumferential sawtooth part form a mold cavity for molding a product;C, molten plastic is injected into the mold cavity; and D, after cooling, mold opening is carried out to take out the product. The sharp corner of the product which is formed by using the processingtechnology is sharper, when the product is applied to the lens, the part with the sharp corner can reflect the passing light, and the phenomenon of light leakage is avoided.

Description

[0001] 【Technical field】 [0002] The invention relates to a lens processing technology with sawtooth. [0003] 【Background technique】 [0004] At present, for the reflection effect of the lens, the lens will form sawtooth on one side of the lens during the injection molding process. The sawtooth on the lens is molded by injecting molten plastic in the mold cavity between the front mold and the back mold and cooling, and the circumferential sawtooth part integrally arranged on the back mold forms the sawtooth on the lens. Since the circumferential sawtooth part on the rear mold is integrally formed, due to the limitation of the mold manufacturing process, there will be a certain arc between the adjacent sawtooth parts on the circumferential sawtooth part, forming a rounded corner. When the product is applied on the lens, the belt Lenses with rounded corners cannot reflect light, which is easy to cause light leakage, and cannot make full use of light, resulting in light waste. ...

AI Technical Summary

Problems solved by technology

Since the circumferential sawtooth part on the rear mold is integrally formed, due to the limitation of the mold manufacturing process, there will be a certain arc between the adjacent sawtooth parts on the circumferential sawtooth part, forming a rounded corner. When the product is applied on the lens, the belt Lenses with rounded corners cannot reflect light, which is easy to cause light leakage, and cannot make full use of light, resulting in waste of light

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