Plastic injection mold for automobile decorative plate

The utility model discloses an automobile decorative plate plastic injection mold, which comprises a buffer feeding cylinder, an overflow material pipe and a collecting box, the buffer feeding cylinder is fixedly arranged at the top of an upper mold, a piston disc is arranged in the buffer feeding cylinder in a sliding manner, two ends of the piston disc are both provided with material holes, and baffles are fixedly arranged at the upper ends of two inner side walls of the buffer feeding cylinder. A supporting plate is fixedly installed at the lower end of the inner side wall of the buffering feeding barrel, the overflow material pipe is communicated and connected to the lower end of one side of the buffering feeding barrel, an electric material valve is installed on the overflow material pipe, and the touch switch controls opening of the electric material valve through a PLC. When the injection molding cavity is blocked and the internal pressure of the injection molding cavity is larger than the pressure of