Automobile headlight decorative frame is one of the most important parts on the headlight, the appearance requirements are strict, the mold needs electroplating treatment. For the automobile headlight decorative frame mold, the design should pay attention to the following points:

(1) Electroplating parts first to avoid welding lines, because electroplating parts have any welding lines will appear, affecting the appearance of plastic parts, the design of the gating system to avoid welding lines, if the welding line is inevitable, it is necessary to try to get it to the non-appearance area, the gating system design to pass the mold flow analysis verification.

(2) The surface of the decorative frame is generally designed with a pattern. When designing the mold, we should pay attention to the depth of the pattern of the plastic parts, which is generally easy to produce flow lines.

(3) Plastic parts material molding process range is small, plastic parts surface easy to produce bright spots and difficult to control. When the mold gating system is designed, the runner should be thick and large, and the gate should be fan-shaped. The maximum width of the gate is about 35~40mm, which is conducive to melt filling.

(4) Decorative frame plastic parts are easy to appear the phenomenon of sticking cavity side of mold, to solve the plastic parts of the early design prevention is generally:

A. In the plastic parts easy to stick to the mold packing force of the inner side of the design of the inverted buckle, the depth of the inverted buckle is 0.5~1mm, the inverted buckle is designed near the rounded corner of the plastic parts.

B. Reinforcing ribs shall be designed on the inner side of the plastic parts corresponding to the large packing force of the cavity side of the mold, and a undercut shall be designed on the push rod. According to the characteristics of the plastic parts, in the 6 LED light area inside plastic parts to design reinforcing ribs and BOSS column, to avoid deformation of the plastic parts.