JPH0320040Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention is for knocking out a cast intermediate vehicle wheel made of aluminum alloy or magnesium alloy from a mold, dropping it onto a pedestal, and placing it on the pedestal. This invention relates to a pedestal used in a casting manufacturing method in which the cast product is immersed in water to be rapidly cooled and then processed to produce a finished vehicle wheel.

(Prior Art) Recently, vehicle wheels made of aluminum alloy have been widely used because of their light weight, durability, and beautiful appearance when installed.

Some of these aluminum alloy vehicle wheels are manufactured by bending and forming a rolled aluminum alloy plate material, and others are manufactured by forging and shaping an aluminum alloy material. Furthermore, there are also products that are molded by casting and then cut into finished products.

Regarding the manufacturing method by casting,
The shape as shown in Figure 2 of Publication No. 15209 (Figure 5 of this specification) or Figure 1 of Japanese Utility Model Application Publication No. 59-83102 (Figure 6 of this specification) is cast. This is then removed from the mold and the parts that require greater dimensional accuracy are machined to create a finished product.

(Problems that the invention aims to solve) For example, with the recent shift to front-wheel drive vehicles, the main mechanisms of the vehicle are concentrated in the front of the vehicle.
Since the required volume at the front of the vehicle increases, wheel disc brakes and the like must be designed to protrude toward the wheels in order to accommodate this volume.

Also, in FR cars, the volume of the air cooling system for cooling the disc brakes is increasing, so the design of the wheel disc part is becoming larger, similar to FF cars.

As a result, the design surface of the vehicle wheel protrudes outward, beyond the outer flange line of the wheel.

When a wheel with this shape is cast and removed from the mold, the design side must be at the bottom due to the casting method of the cast product, and as a result, if the wheel is dropped from the mold with the design side facing down,
The design surface may collide with the pedestal and cause dents on the design surface of a complex three-dimensional design, and products with such scratches on the design surface are no longer commercially available.

For this reason, in order to avoid making dents on the design surface, it is necessary to reduce the falling distance to reduce the impact of dropping the cast product when it is removed from the mold, so the timing of removing the cast product from the mold must be carefully selected. At the same time, the pedestal must be raised and lowered. However, in this case, it takes time to raise and lower the pedestal, reducing work efficiency. Therefore, there is a strong demand for a pedestal that does not damage the design surface even if the cast product is dropped from a distance greater than the height of the cast product to remove it from the mold.

(Means for solving the problems) The cast cradle of the present invention was devised to solve the above problems all at once. The essential structure is that a heat-resistant and water-resistant cushioning material is laminated on a pedestal that receives the material by knocking it out of the casting mold and dropping it.

Furthermore, the heat-resistant and water-resistant cushioning material is preferably silicone rubber, metal spring material, or wood.

Light alloys are aluminum alloys or magnesium alloys.

(Operations and Examples) As shown in Fig. 4, when the as-cast aluminum alloy vehicle wheel wheel 1 is removed from the mold and dropped onto the pedestal 2, the parts shown in Fig. 1 are on the pedestal 2. As shown in FIG. 2, a silicone rubber 3, as shown in FIG. 2, a metal spring material 4, as shown in FIG. 3,
Since the wood 5 is laminated, the silicone rubber 3 metal spring material 4 or the wood 5 absorbs the impact of the casting 1 from falling, and the casting 1 is not damaged.

(Effects of the invention) The casting holder of the present invention is such that when an as-cast casting is removed from the mold and dropped onto the holder, silicone rubber 3 metal spring material 4 or wood 5 is placed on the holder. Because the cushioning material is laminated, even with such a simple structure, it absorbs the impact of dropping the casting, which has the advantage of not damaging the casting. The present invention greatly contributes to the development of industry, as it allows for efficient removal of molds according to working procedures, and enables efficient production of good products.

[Brief explanation of the drawing]

Figures 1, 2, and 3 are schematic cross-sectional views of pedestals according to different embodiments of the present invention, and Figure 4 shows the state in which a casting is dropped onto the pedestal using the pedestal of the present invention. The explanatory drawings shown in FIGS. 5 and 6 are explanatory drawings showing the shape of the cast product. 1... Cast product, 2... pedestal, 3... silicone rubber, 4... metal spring material, 5... wood, 6... design surface.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A heat-resistant and water-resistant cushioning material is laminated on a pedestal that receives an intermediate shaped object of a cast light alloy vehicle wheel by knocking it out of the casting mold and dropping it. A cast pedestal characterized by: (2) The cast pedestal according to claim 1, wherein the heat-resistant and water-resistant cushioning material is silicone rubber. (3) The cast pedestal according to claim 1, wherein the heat-resistant and water-resistant cushioning material is a metal spring material. (4) The cast pedestal according to claim 1, wherein the heat-resistant and water-resistant cushioning material is wood.