Patent ID: 7270523

Claim:
An injection assembly for an injection molding machine, comprising: a plasticizing screw defining an axis; a housing; a drive train, accommodated in the housing, for moving the plasticizing screw in an axial direction and for turning the plasticizing screw, said drive train including an injection drive having a screw mechanism with a force-transmitting member moveable in a direction of an injection stroke, with the plasticizing screw being rigidly connected to the force-transmitting member in a fixed rotative engagement and a movably fixed engagement, and a rotary drive which is separate from the injection drive and has a drive element, with the plasticizing screw being connected to the drive element such that the plasticizing screw is able to turn with the drive element and able to move in an axial direction; and a support structure for supporting the drive train such that the drive train is movable in the axial direction independently from the rotary drive, said support structure including a radial bearing disposed in an area between a screw-proximal end portion of the force-transmitting member and the plasticizing screw, and a linear guide securely fixed to the housing for guiding the drive train during movement in the axial direction.