Insert injection molding device

The utility model relates to the technical field of injection molding, in particular to an insert injection molding device which comprises a base, a top plate is arranged at the upper end of the base, supporting columns are fixedly installed at the two ends of the bottom of the top plate, and the lower ends of the supporting columns are fixedly connected to the base. Two symmetrically-distributed side plates are arranged at the top of the inner plate, the device drives the side plates on the two sides to synchronously move through telescopic rods on the two sides, the side plates on the two sides are made to move away from each other, and therefore the side plates are separated from an injection molding part, then the inner plate is driven by a hydraulic cylinder to move downwards, and the injection molding part is moved to the lower portion to be separated. Therefore, the device can replace manual work to complete demolding work, the fatigue feeling caused by long-term operation of workers is avoided, and th