Toggle lever clamping unit for an injection moulding machine

A toggle lever clamping unit for an injection moulding machine, said toggle lever clamping unit comprising:

• a fixed platen;
• a movable platen movable in relation to the fixed platen;
• a support plate;
• a toggle lever mechanism arranged between the support plate and the movable platen and operatively connected with both the support plate and the movable platen;
• a cross clamp operatively connected with the toggle lever mechanism and movable along a machine longitudinal axis;
• an electric drive operatively connected with the cross clamp for moving the cross clamp;
• and
• a hydraulic drive operatively connected with the cross clamp, said hydraulic drive including a piston cylinder system which is operated by a pressure fluid and comprises a cylinder defined by a length and a piston rod defined by a length, with the lengths of the cylinder and the piston rod being coordinated with one another such that the hydraulic drive follows a travel path of the cross clamp as the movable platen travels between an open position of the clamping unit, in which the toggle lever mechanism is swung in, and a closed position in which the toggle lever mechanism assumes a predeterminable extended position and a clamping force is built up.