An electrical mold clamping apparatus of a plastic injection molding machines includes a motor unit mounted onto a link base for driving a gear at an end of a ball screw in the link base to rotate and a ball screw socket disposed at a fixed base, and the other end of the ball screw of the link base is screwed into the ball screw socket. When the motor unit drives the ball screw to rotate, the link base is displaced with the rotation of the ball screw to achieve the effect of reducing the load of the motor unit as well as the loss of energy.

An electrical mold clamping apparatus of a plastic injection molding machines includes a motor unit mounted onto a link base for driving a gear at an end of a ball screw in the link base to rotate and a ball screw socket disposed at a fixed base, and the other end of the ball screw of the link base is screwed into the ball screw socket. When the motor unit drives the ball screw to rotate, the link base is displaced with the rotation of the ball screw to achieve the effect of reducing the load of the motor unit as well as the loss of energy.

A mold clamping device includes a fixed platen, a movable platen, a mold clamping housing, a plurality of tie bars, and a toggle mechanism provided between the mold clamping housing and the movable platen, in which when link pins connecting the mold clamping housing and two mold clamping housing side links, link pins connecting the movable platen and two movable platen side links, and link pins respectively connecting the two mold clamping housing side links and the two movable platen side links are defined as mold clamping force receiving link pins, at least one of the multiple mold clamping force receiving link pins is defined as a main lubrication target link pin, and the main lubrication target link pin is configured to be greased with a larger amount than each of other mold clamping force receiving link pins.

A bearing bush 1 for use in a toggle has a cylindrical metallic base material 2 and a solid lubricant 3 embedded in the metallic base material 2, and the metallic base material 2 has dead end grooves 5 formed in a cylindrical inner peripheral surface 4, an annular groove 6 formed in the cylindrical inner peripheral surface 4, and circular holes 7a and 7b as well as 7c and 7d formed in each of a pair of semicylindrical inner peripheral surfaces 4a and 4b adjacent to each other in an axial direction X and two pairs of semicylindrical inner peripheral surfaces 4c and 4d sandwiching the pair of semicylindrical inner peripheral surfaces 4a and 4b in a circumferential direction R and adjacent to each other in the axial direction X in each pair.

A bearing bush 1 for use in a toggle has a cylindrical metallic base material 2 and a solid lubricant 3 embedded in the metallic base material 2, and the metallic base material 2 has dead end grooves 5 formed in a cylindrical inner peripheral surface 4, an annular groove 6 formed in the cylindrical inner peripheral surface 4, and circular holes 7a and 7b as well as 7c and 7d formed in each of a pair of semicylindrical inner peripheral surfaces 4a and 4b adjacent to each other in an axial direction X and two pairs of semicylindrical inner peripheral surfaces 4c and 4d sandwiching the pair of semicylindrical inner peripheral surfaces 4a and 4b in a circumferential direction R and adjacent to each other in the axial direction X in each pair.

An electrical mold clamping apparatus of a plastic injection molding machines includes a motor unit mounted onto a link base for driving a gear at an end of a ball screw in the link base to rotate and a ball screw socket disposed at a fixed base, and the other end of the ball screw of the link base is screwed into the ball screw socket. When the motor unit drives the ball screw to rotate, the link base is displaced with the rotation of the ball screw to achieve the effect of reducing the load of the motor unit as well as the loss of energy.

An electrical mold clamping apparatus of a plastic injection molding machines includes a motor unit mounted onto a link base for driving a gear at an end of a ball screw in the link base to rotate and a ball screw socket disposed at a fixed base, and the other end of the ball screw of the link base is screwed into the ball screw socket. When the motor unit drives the ball screw to rotate, the link base is displaced with the rotation of the ball screw to achieve the effect of reducing the load of the motor unit as well as the loss of energy.

A fluid cooling/filtering assembly, having a first pump, which is designed to pump a fluid out of a first container into a circuit, and a second pump, which is designed to pump the fluid into the first container via at least one cooling and/or filtering device, where the second container is separate from the first container and collects the fluid from the circuit and from which the second pump pumps the fluid into the first container via the cooling and/or filtering device and where the second pump can be controlled at least on the basis of the fluid collected in the second container from the circuit and on the basis of the fill level of the fluid in the first and/or second container.

A fluid cooling/filtering assembly, having a first pump, which is designed to pump a fluid out of a first container into a circuit, and a second pump, which is designed to pump the fluid into the first container via at least one cooling and/or filtering device, where the second container is separate from the first container and collects the fluid from the circuit and from which the second pump pumps the fluid into the first container via the cooling and/or filtering device and where the second pump can be controlled at least on the basis of the fluid collected in the second container from the circuit and on the basis of the fill level of the fluid in the first and/or second container.

In one embodiment, a vertical mold clamping apparatus includes a fixed platen, a turntable placed on the fixed platen, and a plate which is provided between the fixed platen and the turntable and supports the turntable so as to be rotatable, and a lubricant is supplied from a lateral side of the plate to an upper surface of the plate that faces a lower surface of the turntable.