Casting production method

Abstract

To provide a casting production method that can reduce the cost and time required for mold manufacturing. Furthermore, to provide a casting production method that can handle medium-volume production of single product types and medium-volume production of multiple product types. [Solution] The method for producing castings involves creating one or more sand molds of different shapes in the required number depending on the situation by layered molding (S11), attaching the sand molds to a circular base (S12), and rotating the circular base to continuously pour molten metal using a fixed-position pouring ladle (S13).

Description

Technical Field

[0001] The present invention relates to a method for producing cast products.

Background Art

[0002] Patent Document 1 describes an operation method of a die-casting apparatus effective for reasonably improving production efficiency. Between the die-casting body and the mold opening / closing device, it is described that any one of two sets of molds is selected for casting operations by replacing only one of the molds and stopping the other mold at the removal position.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, the casting method of Patent Document 1 has problems in that since molds are used, the mold production period becomes long, it is not suitable for multi-variety production, and the mold production cost is high. Also, generally, die-casting apparatuses are large, so there is a problem of occupying a large amount of factory space. In this case, the installation location of the apparatus in the factory is limited.

Means for Solving the Problems

[0005] A method for producing a cast product according to one embodiment creates a required number of sand molds of single or multiple different shapes by stacking molding according to the situation, and attaches the sand molds to a circular base.

Effects of the Invention

[0006] According to the method for producing a cast product of the present disclosure, the cost and period of mold production can be reduced. Also, medium-volume production of one variety and medium-volume production of multiple varieties can be achieved.

Brief Description of the Drawings

[0007] [Figure 1] This flowchart shows an example of a method for producing a casting according to Embodiment 1. [Figure 2] This is a schematic diagram showing an example of a casting apparatus used in the casting production method according to Embodiment 1. [Figure 3] This is a schematic diagram showing an example of a casting apparatus used in the casting production method according to Embodiment 2. [Modes for carrying out the invention]

[0008] Embodiment 1 Embodiments of the present invention will be described below with reference to the drawings. Figure 1 is a flowchart showing an example of a casting production method according to Embodiment 1. Figure 2 is a schematic diagram showing an example of a casting apparatus used in the casting production method according to Embodiment 1.

[0009] As shown in Figure 1, in step S11, one or more sand molds of different shapes are created in the required number depending on the situation through additive manufacturing. Then the process proceeds to step S12.

[0010] Next, in step S12, the sand molds are attached to the circular base. Specifically, when producing one product, as shown in Figure 2A, a sand mold 21 corresponding to the shape of that one product is attached to the circular base 20. When producing multiple products, as shown in Figure 2B, sand molds 21, 22, and 23 of different shapes corresponding to the shapes of multiple products are attached to the circular base 20. Then the process proceeds to step S13.

[0011] Next, in step S13, the circular base is rotated, and molten metal is continuously poured into the sand mold using the fixed-position pouring ladle 24.

[0012] Thus, the casting production method of Embodiment 1 can reduce the cost and time required for mold manufacturing. Furthermore, the casting production method of Embodiment 1 enables medium-volume production of one product type and medium-volume production of multiple product types. In addition, the casting production method of Embodiment 1 allows for flexible and effective use of factory space.

[0013] Embodiment 2 Embodiment 2 describes a casting apparatus applicable to Embodiment 1. Figure 3 is a schematic diagram showing an example of a casting apparatus used in the casting production method according to Embodiment 1. In Figure 3, the casting apparatus 30 comprises a circular base 31 and a sand mold 32.

[0014] The upper part of Figure 3(A) is a top view of a horizontal casting machine. The lower part of Figure 3(A) is a side view of a horizontal casting machine.

[0015] As shown in the lower part of Figure 3(A), the sand mold mounting section 33 is rotatable relative to the sand mold mounting jig 34 and is connected to the circular base 31 above the center of gravity of the sand mold 32. The pouring spout 35 at the top of the sand mold 32 opens upward.

[0016] The upper part of Figure 3(B) is a top view of a vertical production casting apparatus. The lower part of Figure 3(B) is a side view of a vertical production casting apparatus. In this case as well, the orientation of the sand mold 32 is maintained with the pouring spout 35 facing upward. Also, as shown in the cross-sectional view AA' of Figure 3(B), the sand mold mounting jig 34 and the base mounting part 36 are rotatable. Even in vertical continuous production, the orientation of the sand mold 32 is always maintained with the pouring spout 35 facing upward.

[0017] Furthermore, it is desirable to adjust the position of the rudder 37 according to the production requirements for both horizontal and vertical directions.

[0018] Thus, according to the casting apparatus of Embodiment 2, by making the sand mold mounting method rotatable, the switching between horizontal and vertical production of the casting apparatus is made easy, and production can be adapted to the available factory space. In other words, factory space can be used flexibly and effectively.

[0019] Note that the present invention is not limited to the above-described embodiments and can be appropriately modified without departing from the spirit thereof. For example, the number of sand molds arranged on the circular base is arbitrary.

Explanation of Signs

[0020] 20, 31 Circular base 21, 22, 23, 32 Sand mold 24 Pouring ladle 30 Casting device 33 Sand mold mounting part 34 Sand mold mounting jig 35 Pouring port 36 Base mounting part 37 Ladle

Claims

[Claim 1] One or more sand molds of different shapes are created using additive manufacturing in the required number depending on the situation. The aforementioned sand mold is attached to a circular base. A method for producing castings, comprising rotating the aforementioned circular base and continuously pouring molten metal using a fixed-position pouring ladle.

Images