A lens processing technology with sawtooth

Abstract

The invention discloses a lens processing technology with sawtooth, comprising the following steps: A. Installing a rear mold insert on the rear mold base, the rear mold insert includes a first molding insert and a second molding insert, the first The forming insert includes a first splicing piece, on which several sawtooth grooves are opened, and the part on the first splicing piece between adjacent sawtooth grooves constitutes the first forming sawtooth, and the second forming insert includes a second Splicing piece, the second splicing piece is provided with the second forming sawtooth, the second forming sawtooth and the first forming sawtooth are spliced ​​and matched to form the circumferential sawtooth part; The surface and the outer surface of the circumferential serration constitute a mold cavity for product molding; C. inject molten plastic into the mold cavity; D. open the mold and take out the product after cooling. The product molded by the present invention has sharper corners, and when applied to lenses, the parts with sharp corners can reflect passing light without light leakage.

Description

【Technical field】 [0001] The invention relates to a lens processing technology with sawtooth. 【Background technique】 [0002] 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. [0003] The p...

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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