JP-7856075-B2 - Casting apparatus and control method thereof

Inventors

• 岡本 陽斗

Assignees

• トヨタ自動車株式会社

Dates

Publication Date

20260511

Application Date

20230925

Claims (2)

1. A mold in which a mold coating is formed on the molten metal pouring surface, A molten metal inlet for pouring molten metal into the molten metal pouring surface of the mold on which the aforementioned mold coating is formed, A determination unit for determining the quality of the surface shape of the casting formed by the mold, A control unit that adjusts the mold release speed based on the determination result from the determination unit, A casting apparatus comprising, If the determination unit determines that there are signs of quality deterioration in the surface shape of the casting, the control unit slows down the mold release speed. Casting apparatus.
2. A mold in which a mold coating is formed on the molten metal pouring surface, A molten metal inlet for pouring molten metal into the molten metal pouring surface of the mold on which the aforementioned mold coating is formed, A method for controlling a casting apparatus, comprising: The quality of the surface shape of the casting formed by the aforementioned mold is determined, Based on the judgment result, the mold release speed for the next casting to be formed is adjusted . In adjusting the mold release speed for the casting to be formed next, if it is determined in the quality assessment that there are signs of quality deterioration in the surface shape of the casting, the mold release speed is slowed down. A method for controlling a casting apparatus.

Description

This disclosure relates to a casting apparatus and a method for controlling the same. Patent Document 1 discloses a mold casting method in which a mold coating material is applied to the molten metal pouring surface of a mold to form a mold coating, and molten metal is poured onto the molten metal pouring surface covered with the mold coating. Japanese Patent Publication No. 2011-212714 This is a block diagram showing an example of the configuration of a casting apparatus according to this disclosure.This figure shows the relationship between the number of casting shots and the actual area of mold peeling.This figure shows the relationship between the mold peeling area determined by the casting apparatus according to this disclosure using a trained model and the actual mold peeling area.This figure shows images of the surfaces of multiple castings with different numbers of casting shots.This figure shows the relationship between the mold release speed and the area of mold coating removal.This is a flowchart showing the operation of the casting apparatus relating to this disclosure. The present invention will be described below through embodiments, but the claims are not limited to these embodiments. Furthermore, not all configurations described in the embodiments are necessarily essential for solving the problem. For clarity, the following descriptions and drawings have been omitted and simplified as appropriate. In each drawing, the same elements are denoted by the same reference numerals, and redundant explanations have been omitted where necessary. Figure 1 is a block diagram showing an example configuration of the casting apparatus 1 according to this disclosure. The casting apparatus 1 according to this disclosure suppresses deterioration of the surface shape of the casting by slowing down the mold release speed when signs of deterioration in the surface shape of the casting are observed due to defects in the mold coating formed on the molten metal pouring surface of the mold. As a result, the casting apparatus 1 according to this disclosure can continue to cast high-quality castings. A detailed explanation follows below. As shown in Figure 1, the casting apparatus 1 comprises at least a mold 11, a molten metal input unit 12, a determination unit 13, and a control unit 14. A mold coating 101 is formed on the molten metal pouring surface of the mold 11. The mold coating 101 is formed by diluting a mold coating material with water and spraying (applying) it to the molten metal pouring surface of the mold 11 using a spray gun or the like. Examples of mold coating materials include ALO3 and ZnO. The mold coating 101 facilitates the removal of the rough casting 102 formed by the mold 11 (i.e., improves the release properties of the mold 11) and improves the moisture retention of the mold 11. The molten metal pouring section 12 pours (casts) molten metal, such as aluminum, into the molten metal pouring surface of the mold 11, where the mold coating 101 is formed. The molten metal poured into the mold 11 cools and solidifies within the mold 11, becoming the raw material for the casting 102, which is then formed into the desired shape. The raw material of the casting 102, formed into the desired shape by the mold 11, is then removed from the mold 11. The determination unit 13 determines the quality of the surface shape of the casting 102 formed by the mold 11. For example, the determination unit 13 determines the quality of the surface shape of the casting 102 by analyzing an image of the casting 102's surface captured by a camera or other imaging device. Here, if defects or wear occur in the mold coating 101 formed on the molten metal casting surface of the mold 11, the shape of the defective or worn portion of the mold coating 101 will be transferred to the raw material. Therefore, the surface shape of the portion of the casting 102 corresponding to the defect in the mold coating 101 may differ from the ideal surface shape. Accordingly, the determination unit 13 determines that the casting 102 is a good product if the area of the portion of the casting 102 that differs from the ideal surface shape is within the acceptable range, and determines that the casting 102 is a defective product if the area of the portion of the casting 102 that differs from the ideal surface shape is outside the acceptable range. Hereinafter, the area of the casting 102 that differs from the ideal surface shape due to the effects of defects in the mold coating 101 will also be referred to as the mold coating peeling area. Furthermore, even if the area of mold peeling on the casting 102 is within the acceptable range, the determination unit 13 will determine that there are signs of quality deterioration in the surface shape of the casting 102 if it appears likely to exceed the acceptable range. Alternatively, the determination unit 13 may determine that there are signs of quality deterioration in the surface shape of the casting 102