Patent ID: 8297967

Claim:
An ejector device for an injection molding machine comprising a base having a pivot hole formed through the base; and an inner surface defined around the pivot hole; a hydraulic cylinder mounted beside the base and having a driving rod protruding out from the hydraulic cylinder and toward the base; a driving assembly mounted in the pivot hole of the base and having a rotating bushing rotatably mounted in the pivot hole of the base and having an inner connecting part formed on and around an inner surface of the rotating bushing; and a driven rod mounted through the rotating bushing, rotatably connected to the driving rod of the hydraulic cylinder and having an outer connecting part formed on and around an outer surface of the driven rod and connected to the inner connecting part of the rotating bushing; and a transmission assembly mounted on the base and having a servo motor mounted on the base; and a transmission belt mounted around and connected to the rotating bushing of the driving assembly and connected to and driven by the servo motor.