With the continuous development of the automobile industry and the continuous enrichment and improvement of automobile accessories, automobile rearview mirrors, which are an indispensable part of the automobile safety situation, have received more and more attention. The rearview mirror of the car reflects the situation behind and side of the car, so the driver can see the situation in these positions indirectly. It acts as the "second eye" and expands the driver's field of vision. Auto reflective part mold and various auto lamp mould have also attracted more and more attention.

Reflectors are also called convex mirrors, wide-angle lenses, and steering mirrors. They are mainly used at corners and intersections, which can expand the driver’s field of vision and find vehicles on the opposite side of the curve as soon as possible to reduce the occurrence of traffic accidents; Supermarket to prevent theft and monitor blind spots. . A spherical mirror with the outside of the parabola as a reflecting surface is called a convex mirror.

According to the material, the mirror is divided into: stainless steel mirror and PC mirror. PC mirrors are usually divided into: indoor mirrors and outdoor mirrors, or aluminum alloy edging mirrors and non-sealed mirrors. Mirrors are divided into diameters: 600mm, 800mm, 1000mm, 1200mm. In addition to cars, it is also widely used in intersections, parks, parking lots, supermarkets, shopping centers and other places.

At present, in the manufacturing process of automobile rearview mirrors, hot melt ABS is directly injected into the cavity between the upper mold and the lower mold for molding and cooling. However, during the molding process, certain products are easily affected when the mold is opened. The corner areas are damaged, and some thin-walled areas cannot be formed perfectly, and are easily dented or bent when the mold is opened. Therefore, continuous improvement is still needed in auto reflective part mold .