Abstract: An injection molding machine includes an injection unit and a clamping unit. The injection unit includes a barrel and a plasticizing screw which is supported in the barrel for rotation and movement in axial direction. A first direct drive causes the plasticizing screw to rotate in order to plasticize thermoplastic material, and a hydraulic drive causes the plasticizing screw to move axially in order to effect an injection stroke. The hydraulic drive includes a hydraulic accumulator system which is comprised of a variable capacity pump in combination with a hydraulic accumulator. The clamping unit includes a toggle mechanism for moving a movable platen in relation to a stationary support platen, a spindle mechanism for operating the toggle mechanism, and a second direct drive for operating the spindle mechanism.

Abstract: An electric drive apparatus includes at least one electric motor having a rotor and at least two driven shafts which are disposed in coaxial relationship and driven at different rotation speed during operation of the electric motor. The driven shafts are constructed for separate connection to the rotor. Interposed between the rotor and at least one of the driven shafts is a gear mechanism in the absence of any direct interaction of the gear mechanism with the other one of the driven shafts.