A lubricant pump device includes a lubricant cartridge having a tank in which a lubricant is accommodated, and a pump body which is coupled to the lubricant cartridge and receives the lubricant from the lubricant cartridge, wherein the pump body includes a suction path into which the lubricant accommodated in the tank is introduced, a discharge path through which the lubricant introduced from the suction path is supplied to a lubricant path, a temporary storage path disposed between the suction path and the discharge path, a pressure detector provided at one side of the discharge path and configured to measure an internal pressure of the discharge path, and a lubricant supply controller including a cylinder communicating with the temporary storage path and a piston accommodated in the cylinder and moved forward and backward in a longitudinal direction of the cylinder.

An injection molding apparatus is on the basis of a hydraulic injection molding device, and the apparatus includes an electric motor, a torque variable mechanism that changes output torque by the electric motor, and a screw driving unit that transmits the output torque by the torque variable mechanism to a screw. The screw is turned by the electric motor, the torque variable mechanism, and the screw driving unit. The torque variable mechanism applies, to the screw, torque equivalent to a hydraulic drive.

A machine base supports at least one of a clamping unit and an injection unit of an injection molding machine from below. The machine base includes an upper frame extended horizontally and configured to support at least one of the clamping unit and the injection unit. The upper frame has a hollow member and a plate member having a concave cross-section, attached to an upper surface of the hollow member. The plate member and the hollow member are formed with a through hole penetrating from an upper surface of the plate member to a hollow portion in the hollow member.

A mould closing unit (100) for an injection-moulding machine has an electromechanical closing mechanism (M) for opening and closing an injection mould, said electromechanical closing mechanism (M) being actuated by means of at least one spindle unit (10) having at least one spindle (12) and at least one spindle nut (14). Cooling by way of cooling ducts (32) for heat dissipation from the spindle unit (10) is provided. Since the spindle (12) has, in the core, at least one bore (24) in which a cooling and/or lubricating medium is passed into the region of the contact points between the spindle nut (14) and the spindle (12) via at least one lance (20), efficient cooling of the spindle unit is achieved.

A mould closing unit (100) for an injection-moulding machine has an electromechanical closing mechanism (M) for opening and closing an injection mould, said electromechanical closing mechanism (M) being actuated by means of at least one spindle unit (10) having at least one spindle (12) and at least one spindle nut (14). Cooling by way of cooling ducts (32) for heat dissipation from the spindle unit (10) is provided. Since the spindle (12) has, in the core, at least one bore (24) in which a cooling and/or lubricating medium is passed into the region of the contact points between the spindle nut (14) and the spindle (12) via at least one lance (20), efficient cooling of the spindle unit is achieved.

A drive unit for a molding machine for longitudinally displacing a movable first machine component relative to a second machine component, includes a rotationally drivable spindle mounted in a linear movement-locking manner on the second machine component, a spindle nut arranged in a rotational movement-locking manner on the first machine component for positive-locking engagement with the spindle, and a fluid chamber which at least adjoins the spindle and/or the spindle nut, and contains a lubricant. A temperature control element for controlling the temperature of the lubricant is arranged in and/or on the fluid chamber at least in areas.

A drive unit for a molding machine for longitudinally displacing a movable first machine component relative to a second machine component, includes a rotationally drivable spindle mounted in a linear movement-locking manner on the second machine component, a spindle nut arranged in a rotational movement-locking manner on the first machine component for positive-locking engagement with the spindle, and a fluid chamber which at least adjoins the spindle and/or the spindle nut, and contains a lubricant. A temperature control element for controlling the temperature of the lubricant is arranged in and/or on the fluid chamber at least in areas.

A system for managing a flow-state of fluid includes: a flow detector; a management unit; and a temperature sensor. The management unit includes: a valve body opening/closing detection portion; an actual opening/closing time calculation portion that calculates, as an actual opening/closing time, the time from when the opening/closing detection portion detects the opening of the valve body until the same detects the closing thereof within a defined detection time; a correlation storage portion that stores a correlation between the temperature of the fluid and an appropriate opening/closing time range that is appropriate for the valve body; an opening/closing time determination portion that determines whether the actual opening/closing time is within or outside the appropriate opening/closing time range derived by an appropriate time range derivation portion; and an abnormal signal transmission portion that transmits an abnormal signal when the actual opening/closing time is determined to be outside the range.

A rotary platen, which is disposed to face a mold platen, which is provided to be rotatable with respect to the mold platen, and to which a mold is attachable. A plate-form member is attached to a surface of the rotary plate that faces the mold platen. A contour shape of the plate-form member is non-circular.

A rotary platen, which is disposed to face a mold platen, which is provided to be rotatable with respect to the mold platen, and to which a mold is attachable. A plate-form member is attached to a surface of the rotary plate that faces the mold platen. A contour shape of the plate-form member is non-circular.