JP-2026075753-A - molding machine

JP2026075753AJP 2026075753 AJP2026075753 AJP 2026075753AJP-2026075753-A

Abstract

[Problem] To provide a molding machine that can prevent the components of the molding machine from malfunctioning when an operator operates the molding machine after it has been left unattended for a long time. [Solution] The molding machine comprises a molding unit, a hydraulic circuit that supplies power to the molding unit, an input device for inputting a mode instruction that specifies a particular operation mode and an operation instruction to the molding unit, and a control device that controls the molding unit based on the operation instruction. When the time of inactivity without input to the input device in the particular operation mode exceeds a first predetermined time, the control device switches the control mode of the molding unit from the particular operation mode to a standby mode, and when the elapsed time since switching to the standby mode exceeds a second predetermined time, it stops the hydraulic circuit and does not execute the operation instruction in the standby mode. [Selection Diagram] Figure 1

Inventors

釜谷勝浩
西村友希
松本啓志

Assignees

ＴＯＹＯイノベックス株式会社

Dates

Publication Date: 20260511
Application Date: 20241023

Claims (4)

A molding unit including a mold opening/closing unit for opening and closing a mold and an injection unit for injecting molten material into the mold, A hydraulic circuit that supplies power to the molding unit, An input device for an operator to input a mode instruction to specify a particular operation mode from among multiple operation modes, and an operation instruction to the molding unit in each operation mode, The system includes a control device that controls the molding unit based on the aforementioned operation instructions, The control device is When the period of inactivity during which there is no input to the input device in the aforementioned specific operation mode exceeds a first predetermined time, the control mode of the molding unit is switched from the aforementioned specific operation mode to standby mode. When the elapsed time since transitioning to the standby mode exceeds the second predetermined time, the hydraulic circuit is stopped. In the standby mode, the operator does not execute the operation instructions. Molding machine.
The molding machine according to claim 1, wherein the molten material is molten metal.
The system includes a molten metal supply device that transports the molten metal from a furnace that stores the molten metal to the injection unit, The hot water supply device comprises a ladle for scooping the molten metal and an arm mechanism for changing the position and orientation of the ladle. The control device causes the arm mechanism to perform a hot water draining operation at a predetermined timing in the standby mode. The molding machine according to claim 2, wherein in the molten metal draining operation, the ladle is used to scoop up the molten metal in the furnace, the ladle is tilted to return the molten metal in the ladle to the furnace, and the ladle is then positioned so as not to come into contact with the molten metal stored in the furnace.
The molding machine according to any one of claims 1 to 3, further comprising a notification device for informing the operator that the machine is in standby mode.

Description

This invention relates to a molding machine that produces molded products using molten material injected into a mold. Molding machines that inject molten material into a mold to produce molded products are known. For example, Patent Document 1 discloses a die-casting machine that injects molten aluminum or the like into a mold. In this die-casting machine, if there is no input from the operator for a predetermined period of time, the pump motor that operates the die-casting machine is stopped. Japanese Patent Publication No. 2012-16714 Figure 1 is a schematic diagram of the molding machine according to Embodiment 1.Figure 2 is a schematic diagram showing an example of the input device shown in Figure 1.Figure 3 is a flowchart showing an example of the control procedure for a molding machine according to Embodiment 1. The molding machine according to the embodiment will be described below based on the drawings. Identical reference numerals in the drawings indicate identical parts. The shapes, sizes, and positional relationships shown in each drawing are for illustrative purposes only and do not necessarily represent the actual shapes, sizes, and positional relationships. Furthermore, the present invention is not limited to the configurations shown in the embodiments, but is defined by the claims, and all modifications within the meaning and scope of the claims are intended to be included. <Embodiment 1> The molding machine 1 of Embodiment 1 shown in Figure 1 is a die-casting machine. The molding machine 1 in this example comprises a molding unit 2, a hydraulic circuit 3, an input device 4, and a control device 5. The molding unit 2 is the main component of the die-casting machine that produces molded products using molten material injected into a mold 10. The molten material in the die-casting machine is molten metal 19 L. The hydraulic circuit 3 supplies power to at least some of the components of the molding unit 2. The input device 4 is a device for the operator to input instructions to the molding machine 1. The control device 5 is a device that controls the molding unit 2 and the hydraulic circuit 3 based on the instructions input by the operator. One of the features of the molding machine 1 in this example is the control of the molding machine 1 by the control device 5. The following describes each component of the molding machine 1, and then the control of the molding machine 1 by the control device 5. ≪Molding Unit≫ The molding unit 2 in this example includes a mold opening/closing unit 6 for opening and closing the mold 10, an injection unit 7 for injecting molten material into the mold 10, and an ejector unit 8 for removing the molded product from the mold 10. The molding unit 2 may further include a spray unit for spraying air or a fluid such as a mold release agent onto the inner circumferential surface of the mold 10. [Type opening/closing unit] The mold opening/closing unit 6 opens and closes the mold 10 and clamps it. The mold 10 comprises a fixed mold 11 and a movable mold 12. The mold opening/closing unit 6 comprises a fixed die plate 61 that supports the fixed mold 11 and a movable die plate 62 that supports the movable mold 12. The mold opening/closing unit 6 further comprises a tie bar 63, a cylinder 64 and a toggle link mechanism 65. The first end of the tie bar 63 on the injection unit 7 side is fixed to the fixed die plate 61. The second end of the tie bar 63 opposite to the first end is fixed to the tailstock 66. The middle part of the tie bar 63 passes through the movable die plate 62. The movable die plate 62 moves along the tie bar 63 as the driving force of the cylinder 64 is transmitted through the toggle link mechanism 65. In this example, the cylinder 64 is a hydraulic cylinder. When the movable die plate 62 moves to the left in the plane of the paper, the fixed mold 11 and the movable mold 12 separate, and the mold 10 opens. When the movable die plate 62 moves to the right in the plane of the paper, the fixed mold 11 and the movable mold 12 come into contact, and the mold 10 closes. When further pressure is applied to the movable mold 12 of the closed mold 10 by the movable die plate 62 in the direction of the paper to the right, the fixed mold 11 and the movable mold 12 are clamped together. [Injection Unit] The injection unit 7 injects molten metal 19L into the clamped mold 10. The injection unit 7 comprises a sleeve 71, a plunger 72, and a cylinder 74. The sleeve 71 is a cylindrical member inserted into a through passage 69 of the fixed die plate 61. The through passage 69 is connected to the cavity 15, which is the internal space of the mold 10. The plunger 72 is housed within the sleeve 71 so as to be able to move back and forth. The plunger 72 is moved back and forth by a cylinder 74. In this example, the cylinder 74 is a hydraulic cylinder. When the plunger 72 moves forward to the left in the plane of the paper, the molten metal 19L in the sleeve 71 is supplied to the c