Plastic spectacle frame machining process

Abstract

The invention relates to a plastic spectacle frame machining process. The process at least comprises the following steps: firstly, cutting one side of a position, needing bending, of a straight plastic spectacle frame to form a straight groove of which the cross section is V-shaped; secondly, heating and softening the plastic spectacle frame; and finally, bending the two sides at the milling positions of the softened plastic spectacle frame in the V-shaped straight groove, and adhering the two groove sides of the V-shaped straight groove by using an adhesive. Therefore, no stitching trace appears on the outside surface of the plastic spectacle frame after being bent and simultaneously no color strip appears. Particularly, consistent color and luster of the plastic spectacle frame with a plurality of layers of inside and outside colors can be ensured after machining.

Description

technical field [0001] The invention relates to a plastic mirror frame processing technology. Background technique [0002] Glasses are a tool commonly used by people to adjust eyesight or add decorations. They generally include lens frames and so on. Because the frames are to be worn on people's ears, there are two bends that are roughly at right angles to make the glasses The stand can be hung on the human ear smoothly. However, if the frame is made of plastic material, one situation is to cut off the original straight plastic parts and then splice the two sections together, but this will inevitably bring splicing traces on the inside and outside of the frame, which is not good for the aesthetics. In another case, the bending method of the bending part is to use the extensibility of the plastic and use direct heating to bend. Although this avoids the appearance of splicing marks, the color change is caused by the extension, especially the mirror. When the frame has plast...

AI Technical Summary

Problems solved by technology

However, if the frame is made of plastic material, one situation is to cut off the original straight plastic part and then splice the two sections together, but this will inevitably bring splicing traces on the inside and outside of the frame, which is not good for the aesthetics. In another case, the bending method of the bending part is to use the extensibility of the plastic and use direct heating to bend. Although this avoids the appearance of splicing marks, the color change is caused by the extension, especially for mirrors. When the frame has multi-layered color plastic, such bending will cause color stripes of different shades to appear on the outside of the bend, which also greatly reduces the aesthetics of the glasses