In a mould-closing unit (F) for an injection-moulding machine for processing plastics, at least one mould carrier (10), which can be moved in a longitudinal direction (L-L) of the mould-closing unit (F), is arranged on a machine base (14) and between itself and a further mould carrier (12) forms a mould-clamping space (C), in which parts of at least one cyclically openable and closable injection mould (M) can be received. At least one linear guide (16), arranged in the longitudinal direction (L-L) on the machine base (14), serves for guiding the at least one movable mould carrier (10) when there is movement in the longitudinal direction (L-L). The mould carrier is supported on the machine base (14) and/or the at least one linear guide (16) by way of a load take-up (18), which has above the at least one linear guide (16) an articulating region (20) for the at least one movable mould carrier (10), which region is connected to the movable mould carrier with a force fit or material bonding and the stiffness of which is greater in the longitudinal direction (L-L) than in a direction transverse to the longitudinal direction (L-L). The forces acting on the guide of the movable mould carrier during the operation of the injection-moulding machine are minimized by the load take-up (18) and/or the articulating region (20) being elliptical in cross section, with the minor axis of the ellipse extending in a direction transverse to the longitudinal direction (L-L) of the mould-closing unit (F).

A mold-clamping machine includes a pressure receiving mount, a turn table mounted on the pressure receiving mount so as to be freely turnable, a movable mount placed at a position higher than the turn table, tie bars attached to and extending downwardly from the movable mount, and which pass completely through the pressure receiving mount and a traction mount. The mold-clamping machine clamps a metal mold by moving down the traction mount with reference to the pressure receiving mount. Each of the tie bars is freely movable up and down by each of first to third cylindrical guides provided at the pressure receiving mount. The second cylindrical guide and the third cylindrical guide each include a rectangular flange portion fastened to the pressure receiving mount, and respective attachment attitudes of the second cylindrical guide and the third cylindrical guide are adjustable.

A clamping unit includes a fixed mold mounting plate and a movable mold mounting plate mounted movably relative to the fixed mold mounting plate along a longitudinal axis. The movable mold mounting plate and the fixed mold mounting plate are mounted on a frame, and the frame is arranged on a lateral frame-side plate side of the movable mold mounting plate and the fixed mold mounting plate. The fixed mold mounting plate is fixedly connected to the frame of the clamping unit in a first fastening area positioned on the frame-side plate side of the fixed mold clamping plate. The fixed mold clamping plate is connected to the frame of the clamping unit in a second fastening area positioned on a second side of the fixed mold clamping plate facing away from the frame-side plate side, by an actuator.

A clamping unit includes a fixed mold mounting plate and a movable mold mounting plate mounted movably relative to the fixed mold mounting plate along a longitudinal axis. The movable mold mounting plate and the fixed mold mounting plate are mounted on a frame, and the frame is arranged on a lateral frame-side plate side of the movable mold mounting plate and the fixed mold mounting plate. The fixed mold mounting plate is fixedly connected to the frame of the clamping unit in a first fastening area positioned on the frame-side plate side of the fixed mold clamping plate. The fixed mold clamping plate is connected to the frame of the clamping unit in a second fastening area positioned on a second side of the fixed mold clamping plate facing away from the frame-side plate side, by an actuator.