Abstract: An improved injection molding machine having a support frame, an injection gun, a guiding device, and a molding cavity, the guiding device being mounted to the support frame for moving the injection gun along a longitudinal axis towards and back from the molding cavity. The improvement lies in that the guiding device includes an actuator, a lever link, a coupling link, and a guiding track. The actuator is mounted to the support frame and has a piston end movable between a retracted position and an extended position. The lever link has a central portion pivotally mounted to the support frame and further includes first and second ends located respectively on both sides of the central portion, the first end of the lever link being pivotally connected to the piston end of the actuator.