The utility model relates to the technical field of injection molding machines, and discloses an electric mold opening and closing structure and an
injection molding machine, the electric mold opening and closing structure comprises a fixed mold plate, a movable mold plate, a
tail plate and a driving mechanism used for driving the movable mold plate to slide, the driving mechanism comprises a motor, a lead screw and a nut
assembly in threaded connection with the lead screw, the lead screw is rotationally arranged on the
tail plate, and the motor is arranged on the
tail plate. The motor is used for driving the lead screw to rotate, a toggle rod force expanding mechanism is arranged between the tail plate and the movable mold plate and comprises a driving toggle rod and a driven toggle rod
assembly, one end of the driven toggle rod
assembly is hinged to the tail plate, and the other end of the driven toggle rod assembly is hinged to the movable mold plate. According to the utility model, the motor, the screw rod and other structures are used for driving the movable template to slide so as to finish mold opening and mold locking actions, the rotary motion of the motor is efficiently converted into the
linear motion of the movable template, the
energy loss is reduced, and the transmission efficiency is high; and the toggle rod force expanding mechanism is arranged, so that larger mold locking force is provided under the same motor output power, and the quality of injection molding products is further improved.