Computer plastic part injection mold with automatic demolding function

The utility model relates to the field of injection molds, and discloses a computer plastic part injection mold with an automatic demolding function, the computer plastic part injection mold comprises an upper mold plate, the left side and the right side of the upper mold plate are fixedly connected with abutting blocks, a fixing frame is installed under the abutting blocks, the fixing frame is in a U shape, and the outer surface of the fixing frame is slidably connected with a supporting frame; a machining table is fixedly connected to the bottom of the supporting frame, an air cylinder, an upper die plate, an abutting block, a fixing frame, a spring, a vertical rod and a bottom plate are used in cooperation, the air cylinder pulls the upper die plate to move upwards to be separated from the top of a lower die plate, and meanwhile the upper die plate drives the abutting block to be separated from extrusion on the fixing frame; the compression spring pushes the fixing frame through the reverse action to drive