A method is provided for moving a movable mold mounting plate of a molding machine, in which the movable mold mounting plate is movable relative to a stationary mold mounting plate and the mold mounting plates are kinematically connected to each other, and in which a drive mechanism for moving the movable mold mounting plate is provided. Molding tool parts arranged on the mold mounting plates are brought into abutment to each other in a closed state, and a temporally changeable tilting movement of the mold mounting plates relative to each other occurs by the movement of the movable mold mounting plate. The movable mold mounting plate is moved by the drive mechanism and/or the stationary mold mounting plate is moved by an injection device in such a way that when reaching a predeterminable distance of the mold mounting plates relative to each other, a parameter representing the tilting movement of the mold mounting plates relative to each other is less than or equal to a presettable value, preferably equal to zero.

A method and system is provided for operating a molding machine to prevent damage when replacing a mold. The molding machine includes movable and fixed magnetic platens to open and close a mold. The system includes a flux sensor. When a set-up mode is selected, an electronic processor is configured to: enable movement of the movable magnetic platen when the crane is above the molding machine; the molding machine receives a crane load signal that is less than a marginal load value; and the flux sensor senses that the magnetic platens are magnetized and the magnetic circuit is completed; and enable movement of the movable platen to remove/insert the mold when the crane is above the molding machine; the molding machine receives a crane load signal wherein a load is greater than the marginal load value; and the flux sensor senses that the magnetic circuit is not completed.

A vertical mold clamping device includes a fixed platen, an upper movable platen provided above the fixed platen, a lower movable platen provided below the fixed platen, a plurality of tie bars penetrating the fixed platen and each having an upper end portion fixed to the upper movable platen by a tie bar nut and a lower end portion coupled to the lower movable platen, a mold clamping mechanism provided between the fixed platen and the lower movable platen, and a rotary table rotatably provided on an upper surface of the fixed platen. One of the tie bars is a center tie bar penetrating the rotary table. The center tie bar is fixed by the tie bar nut in a state of being attached to the upper movable platen via a detachable sleeve having a predetermined thickness.

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.