Injection molding machine

An injection molding machine for manufacturing mold products from a molten material, comprising:

• an injection apparatus including a heating cylinder, a screw disposed in said heating cylinder, and means for axially moving said screw in said heating cylinder for injecting the molten material;
• screw rotating means for rotating said screw for plasticizing the material;
• drive means for electrically driving the injection molding machine;
• means for transmitting driving power from said drive means to said injection apparatus;
• and
• a mold opening and closing apparatus;
• said drive means comprising first servomotor and a second servomotor and said power transmission means comprising three power transmission mechanisms operatively connected to said first servomotor and said second servomotor respectively, so that said first servomotor drives one of said injection apparatus, said screw rotating means and said mold opening and closing apparatus through one of said power transmission mechanisms, and said second servomotor drives one of the other of said injection apparatus, said screw rotating means and said mold opening and closing apparatus through one of the other two of said three power transmission mechanisms, said first servomotor and said second servomotor being operatively connected to at least one of said injection apparatus, said screw rotating means and said mold opening and closing apparatus through one of said power transmission mechanisms and a first clutch means operatively associated with said one power transmission mechanism, and said first servomotor and said second servomotor being operatively connected to one of said injection apparatus, said screw rotating means and said mold opening and closing apparatus through a second clutch means.