Cab top cover injection mold and injection-molded top cover assembly thereof

The invention relates to the technical field of cab top cover assembly injection molding, in particular to a cab top cover injection mold and a top cover assembly formed through injection molding of the cab top cover injection mold. The cab top cover injection mold comprises a fixed mold assembly and a movable mold assembly matched with the fixed mold assembly, and an injection molding cavity of an injection molding product is formed after the fixed mold assembly and the movable mold assembly are assembled; the fixed mold assembly comprises an A-type hot runner injection molding module and a B-type hot runner injection molding module, the A-type hot runner injection molding module and the B-type hot runner injection molding module respectively comprise a first valve needle and a second valve needle, the bottom end of each of the first valve needle and the second valve needle comprises a short part and a long part which are symmetrical, and the side surfaces of the short parts and the long parts are provided w