JP-7854657-B2 - molding machine

Inventors

• 後藤 浩
• 日野 耕一郎

Assignees

• 新日本金属工業株式会社
• ＴＯＹＯイノベックス株式会社

Dates

Publication Date

20260507

Application Date

20220922

Claims (4)

1. An inclined frame is placed on the mounting surface with its support surface facing diagonally upward, A clamping device supported on the aforementioned support surface opens and closes and clamps the fixed mold and the movable mold, An injection device is supported on the support surface above the clamping device and injects molding material into cavities formed inside the fixed mold and the movable mold that are clamped by the clamping device. A molding machine comprising a spray device for injecting fluid into the mold surfaces of the opened fixed-side mold and the movable-side mold, The clamping device is, A fixed die plate fixed to the support surface and supporting the fixed side mold, The system includes a movable die plate that supports the movable die on the support surface below the fixed die plate and moves in a direction that brings the movable die toward and toward the fixed die, The spray device, When viewed from above, the operating position overlaps with the inter-mold region between the opened fixed mold and the movable mold, A molding machine characterized by being configured to allow a change in posture between a retracted position, which is removed from the mold inter-molding region when viewed from above and below.
2. The spray device, A stand erected above the aforementioned fixed die plate, A spray body, supported at the upper end of the aforementioned stand, stores compressed fluid, A nozzle for spraying the fluid stored in the spray body, The stand is rotated around a first pivot axis that is perpendicular to the direction of movement and vertical direction of the movable die plate, and the stand is further driven by a first drive source. The spray device, The usage posture in which the stand is extended in a direction perpendicular to the direction of movement of the movable die plate, The molding machine according to claim 1, characterized in that it changes its posture from the aforementioned operating posture to the aforementioned retracted posture in which the stand is rotated to the opposite side of the movable die plate.
3. The spray device includes a second drive source that rotates the spray body relative to the stand around a second pivot axis extending in the direction of extension of the stand. The spray device, The operating posture involves extending the stand in a direction perpendicular to the direction of movement of the movable die plate and holding the nozzle in a position that allows it to enter the inter-mold region, From the aforementioned operating position, the spray body is rotated around the second pivot axis to an intermediate position in which the nozzle is held in a position outside the mold inter-molding region when viewed from the vertical direction, The molding machine according to claim 2, characterized in that it changes its posture from the intermediate posture to the retracted posture in which the stand is rotated around the first pivot axis to the side opposite to the movable die plate.
4. The first drive source is a winch that winds up and unwinds the wire connected to the stand, The molding machine according to claim 3, characterized in that the second drive source is an air cylinder.

Description

This invention relates to a molding machine that injects molding material into a mold to form a molded product. Conventionally, molding machines are known that include a clamping device for opening, closing, and clamping a fixed mold and a movable mold, and an injection device for injecting molding material into cavities formed inside the fixed mold and the movable mold that have been clamped by the clamping device. In the molding machine with the above configuration, there is a problem in that the injection device entrains air when injecting the molding material, causing surface defects and casting defects. Therefore, Patent Documents 1 to 4 disclose a molding machine in which the injection device is tilted so as to be positioned diagonally above the clamping device, with the aim of solving this problem. Furthermore, Patent Document 5 discloses a spray device for spraying a mold release agent onto the mold surfaces of a fixed mold and a movable mold. The spray device described in Patent Document 5 sprays the mold release agent from a nozzle inserted between the opened fixed mold and the movable mold. Japanese Unexamined Patent Publication No. 53-001130Japanese Patent Publication No. 2001-105115Japanese Patent Publication No. 2003-039148Japanese Utility Model Publication No. 63-127748Japanese Patent Publication No. 2010-099720 This is a side view of the die-casting machine according to this embodiment.This is a schematic diagram of the clamping device.This is a view of the locking mechanism from the upstream side in the upward direction.This is a schematic diagram of a hydraulic circuit that supplies and discharges hydraulic fluid to a type opening and closing cylinder.This is a schematic diagram of the injection device.This is an enlarged view of the hydraulic fluid flow path around the injection device.This is a hardware configuration diagram of a die-casting machine.This is a flowchart of the movable die plate locking process.This diagram shows the flow chart for the mold closing process and the change in flow rate of the flow control valve during the mold closing process.This diagram shows the spray device in its operating position.This is a diagram showing a spray device in an intermediate position.This is a diagram showing a spray device in a retracted position. Figure 1 is a side view of the die-casting machine 10 according to this embodiment. The die-casting machine 10 is a device that manufactures molded products by injecting molten metal into a mold. However, the specific example of a molding machine is not limited to the die-casting machine 10; an injection molding machine that injects resin (molding material) into a mold to form molded products may also be used. As shown in Figure 1, the die-casting machine 10 mainly comprises an inclined frame 11, a mold clamping device 20, an injection device 30, and a hydraulic oil supply unit 40. The inclined frame 11 has the shape of a right triangle when viewed from the side. The inclined frame 11 is placed on the mounting surface G with the portion corresponding to the hypotenuse of the right triangle (hereinafter referred to as the "support surface 12") facing diagonally upward. Typically, the mounting surface G is a horizontal plane. The support surface 12 is inclined at a predetermined angle (for example, 30°) relative to the mounting surface G. However, the inclination angle of the support surface 12 relative to the mounting surface G is not limited to the example described above. Furthermore, the inclination angle of the support surface 12 relative to the mounting surface G may be fixed or variable. The clamping device 20 and the injection device 30 are supported on the support surface 12 of the inclined frame 11. The clamping device 20 is supported on the support surface 12 at a diagonal downward position from the injection device 30. The injection device 30 is supported on the support surface 12 at a diagonal upward position from the clamping device 20. Meanwhile, the hydraulic fluid supply unit 40 is installed on the mounting surface G at a different position from the inclined frame 11. The mold clamping device 20 opens and closes the mold 21 and clamps it. Specifically, the mold clamping device 20 mainly comprises a fixed die plate 22a that supports the fixed mold 21a and a movable die plate 22b that supports the movable mold 21b. The fixed die plate 22a is fixed to the support surface 12 at a diagonal downward position from the injection device 30 and diagonally upward position from the movable die plate 22b. The movable die plate 22b is supported by the support surface 12 at a diagonal downward position from the fixed die plate 22a. The fixed mold 21a and the movable mold 21b are arranged facing each other in the direction of inclination of the support surface 12. Furthermore, the movable die plate 22b is configured to move along the support surface 12 in a direction that moves the movable die 21b toward or toward the fixed die 21a. Hereafter,