Demolding structure for injection molding part

An injection molding opening is formed in a top mold of an injection mold, the demolding structure comprises the injection mold, the injection molding opening and a demolding assembly, the injection mold comprises a bottom mold and the top mold, the injection molding opening is formed in the top surface of the top mold, and the demolding assembly is arranged on the inner side of the top mold; the demolding assembly comprises a cutter, a sliding rail and a sliding rail driving machine, the cutter is connected with the sliding rail, a sliding rail driving motor is arranged on the outer side of the sliding rail, the sliding rail driving motor is connected with the outer side of the top mold, and the mold above the top mold is used for taking out a part subjected to injection molding. And the runner and the injection molding part body can be cut off through the cutter on the side edge, the runner and the injection molding part body can be taken out more conveniently, and therefore demolding operation can be condu