Auxiliary core pulling device for injection molding part with internal threads at two ends

The utility model relates to an auxiliary core-pulling device for an injection-molded part with internal threads at two ends. The auxiliary core-pulling device comprises a workbench, a motor arranged on the top surface of the workbench, a connecting device arranged on a transmission shaft of the motor and limiting plates symmetrically arranged on the workbench, limiting plates are arranged on the motor transmission shaft, clamps are symmetrically arranged between the limiting plates, an injection molding part is arranged between the clamps, a first mold core is arranged at one end of the injection molding part, a second mold core is arranged at the other end of the injection molding part, and the clamps directly face the motor transmission shaft. According to the mold, the motor is connected with the mold core of the injection molding part through the connecting device, and the mold core is pulled out of the injection molding part through rotation in the direction opposite to the direction of the internal thr