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AssigneeThe Japan Steel Works, Ltd.
InventorsSoma Mitani, Shogo Kosue
Estimating the term…
An injection molding machine includes a screw provided in a cylinder having a nozzle at a tip so that the screw is allowed to be driven in a rotational direction and an axial direction, a drive device configured to drive the screw, and a control device configured to control an operation of the drive device, wherein the drive device has a rotatably provided ball screw shaft and a nut screwed onto the ball screw shaft and moved forward and backward in response to rotation of the ball screw shaft, and includes a ball screw configured to drive the screw in the axial direction by forward and backward movement of the nut, and the control device sequentially moves a screw position before injection and a screw position after injection in a molding process cycle so that a forward/backward movement range of the nut in the molding process cycle is dispersed.
An injection molding machine, comprising:
A control method of controlling an operation of a drive device including a rotatably provided ball screw shaft and a nut screwed onto the ball screw shaft and moved forward and backward in response to rotation of the ball screw shaft, and driving a screw of an injection molding machine by forward and backward movement of the nut, the control method comprising:
A non-transitory computer readable recording medium storing a computer program for causing a computer to control an operation of a drive device including a rotatably provided ball screw shaft and a nut screwed onto the ball screw shaft and moved forward and backward in response to rotation of the ball screw shaft, and driving a screw of an injection molding machine by forward and backward movement of the nut, the computer program causing the computer to execute a process of sequentially moving a screw position before injection and a screw position after injection in a molding process cycle so that a forward/backward movement range of the nut in the molding process cycle is dispersed.
Dependencies are inferred from the claim text.