Mirror polishing method for polishing surface of lens sheet mould main body

Abstract

The invention discloses a mirror polishing method for polishing a surface of a lens sheet mould main body. The mirror polishing method comprises the following steps: sanding and priming the surface of the lens sheet mould main body; smoothening sand marks on all faces of the lens sheet mould main body; and grinding and cleaning the surface of the mould main body. By polishing in a gradual way of rough polishing first and then fine polishing, the surface of the lens sheet moulding mould main body meets requirements of a mirror surface, thus providing a firm condition for improving the quality of a downstream lens sheet.

Description

technical field [0001] The invention relates to a method for mirror-polishing the surface of a main body of a lens sheet forming mold. Background technique [0002] At present, the surface polishing of the main body of the lens sheet molding mold on the market adopts the following method. After the rough molding of the mold, the edges and edges of the mold are trimmed by electric spark discharge, and then the surface of the mold is ground with a hard grinding wheel, and then manually. Sandpaper step-by-step sanding. During manual polishing, the operator first selects 180-mesh sandpaper for preliminary sanding of the profile, then selects 240-mesh sandpaper for fine sanding, and then uses 360-mesh, 600-mesh, and 800-mesh sandpaper for sanding step by step, and finally uses 1200-mesh sandpaper to finish. Light. [0003] The surface mirror polishing method of the subject surface of the lens sheet forming mold has the following deficiencies. First, the edges and edges of the m...

AI Technical Summary

Problems solved by technology

[0003] The surface mirror polishing method of the subject surface of the lens sheet forming mold has the following deficiencies. First, the edges and edges of the mold are trimmed by electric spark discharge, which may easily cause burns due to excessive temperature on the surface of the mold and the surface of the main body of the mold is not soft or hard. It is easy to form orange peel and spots, which will affect the quality of later polishing; secondly, using a hard grinding wheel to grind the surface of the mold body is a head-to-head method, that is, there will be a situation where two strong encounters will not give in to each other, resulting in the grinding wheel and the mold body. Severe slippage occurs between the surfaces. In addition, the abrasive grains of the hard grinding wheel are not easy to fall off, and the metal chips under grinding are easy to stick to the grinding wheel, resulting in burns on the surface of the workpiece and pits; Rough, the surface of the main body of the mold is not smooth, the polished surface has poor flatness, and the finish still cannot meet the requirements, resulting in unqualified products obtained from mold opening