JP2678468B2 - Cooling system for vehicle wheel molds - Google Patents

Description

The present invention relates to a cooling device for a vehicle wheel mold.

(Prior art)

In the vehicle wheel, stress is concentrated on the root of the spoke portion to the disc or the root of the spoke portion to the hub portion, depending on its application.

For this reason, conventionally, in order to increase the strength of these roots, the roots are made thick.

[Problems to be solved by the invention]

However, in the conventional casting of vehicle wheels as described above, when the base is made thick, there is a disadvantage that casting defects such as scrapes are likely to occur.

An object of the present invention is to eliminate such inconvenience.

[Means for Solving the Problems]

In order to achieve the above object, in the cooling device for a mold for a vehicle wheel of the present invention, the casting space of the mold body is composed of a spoke part forming space part, a disk forming space part, and a rim forming space part, and the mold A mold for a vehicle wheel, in which a cooling means is installed in a main body, wherein the cooling means is arranged in a continuous portion of the spoke portion molding space portion and the rim molding space portion.

Further, the casting space of the mold body is a mold for a vehicle wheel, which comprises a spoke part molding space part and a disk molding space part, and a cooling means is installed in the mold body, wherein the cooling means is the spoke part molding space. And the disk molding space is connected to the mold on the back surface of the design surface (the design surface of the vehicle wheel, the same applies below) of the connecting portion.

Further, the casting space of the mold body is a wheel mold for a vehicle, which comprises a spoke molding space portion, a disk molding space portion, and a rim molding space portion, and a cooling means is installed in the mold body, which serves as the cooling means. A cooling hole is formed in the cooling member and the cooling hole is penetrated into the casting space of the mold body, and a nozzle is inserted into the cooling hole from the outside of the mold body through a spare space. A cooling fluid can be ejected to the cooling holes, and the cooling fluid is arranged in the spoke portion forming space portion and the disk forming space portion or in the continuous portion of the spoke portion forming space portion and the rim forming space portion.

In addition, a cooling member is installed on the mold body as the cooling means, and the cooling member is arranged so as to constitute a part of a casting space, and the thermal conductivity of the cooling member is higher than that of the mold body. However, the cooling member can be made coolable.

Further, a vent hole may be used as the cooling hole.

[Function of the invention]

Since the cooling device for the mold of the vehicle wheel according to the present invention is configured as described above, the connecting portion of the spoke portion forming space portion and the rim forming space portion by the cooling means after pouring into the mold space is connected. Can be locally cooled, and the continuous portion of the spoke molding space and the disk molding space can be locally cooled by a cooling means arranged in the mold on the back side of the design surface. It is possible to locally cool the connecting portion of the spoke forming space and the rim forming space or the connecting portion of the spoke forming space and the disk forming space.

[Explanation of Example]

 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

In FIG. 1, M is a mold for molding a vehicle wheel, and is formed by combining a lower mold 1, a horizontal mold 2, 2 and an upper mold 3. Reference numeral 5 denotes a casting space, which is formed in the mold body M. The mold space 5 is shaped like a vehicle wheel, and includes a disk forming space 51, a spoke forming space 52, and a rim forming space 53. Next, 11 is a first insert of the lower mold, which is fixed to the center of the lower mold 1 by a bolt 12. The first insert 11 forms the surface of the disk portion (of the vehicle wheel). Reference numeral 111 denotes a second insert of the lower mold 1, which is fastened to the surface of the first insert 11 by the bolt 12. The second insert 111 forms an axle hole of the vehicle wheel. Reference numeral 31 denotes a nest of the upper die 3, which is fitted to the center of the upper die 3. The insert 31 forms the back surface of the disk portion (of the vehicle wheel).

Next, reference numeral 21 denotes a runner, which is formed in the horizontal mold 2. This runway 21 is connected to the rim forming space 3 through the weir 211.
It is connected to. The molten metal that has passed through the runner 21 is
It is supplied to the casting space 5 via 211. Reference numeral 212 denotes a feeder space connected to the runner 21, and reference numerals 531 and 531 denote feeder spaces connected to the rim forming space portions 53, 53, respectively.

Reference numeral 6 is a vent hole (corresponding to the "cooling hole" of the present invention), which is installed in the upper mold 3. The cooling device (corresponding to the "cooling means" of the present invention) C of the present invention is constructed by utilizing the vent hole 6.

Next, the cooling device C will be described in detail with reference to FIG.

In the figure, 32 and 33 are air vent mounting holes, which are formed in the upper die 3. These air vent mounting holes 3
Of the two, 33, the air vent attachment hole 32 is formed in the spoke forming space 52 and the disc forming space 51 in the casting space 5.
And the air vent attachment hole 33 is opened on the rear surface side of the design surface in the continuous portion of the spoke molding space 52 and the rim molding space 53. Reference numerals 7 and 7 denote air vents which are fitted to the ends of the casting space 5 in the air vent mounting holes 32 and 33, respectively. The vent holes 6 are formed in the air vents 7, and the air in the casting space 5 during pouring is discharged through the vent holes 6. 34 and 34 are heat insulating pipes, which are fitted into the air vent mounting holes 32 and 33. The heat insulating pipes 34, 34 make it difficult to conduct heat between the upper mold 3 and the cooling fluid described later. Reference numeral 8 denotes a cooling fluid supply pipe, which is installed between the upper mold 3 and the insert 31 (of the upper mold 3) (perpendicular to the drawing). Reference numerals 81, 81 denote ejection nozzles, which are installed in the cooling fluid supply pipe 8. The jet nozzles 81, 81 are provided with extra spaces 321, 331 in the heat insulating pipes 34, 34, respectively.
Is inserted through the connector. Therefore, if a cooling fluid such as cooling air or cooling mist is flown through the cooling fluid supply pipe 8 after pouring, the cooling air is blown to the air vents 7, 7 through the jet nozzles 81, 81. , 7, and eventually
The casting (cast in the casting space 5) can be cooled. Note that the discharged air that has passed through the vent holes 6, 6 at the time of pouring is discharged out of the mold M through the extra spaces 321, 331. In this embodiment, cooling holes can be provided independently of the vent holes 6.

Further, a cooling member is installed on the mold body as the cooling means, and the cooling member is arranged so as to form a part of a casting space, and the thermal conductivity of the cooling member is higher than that of the mold body. It is also possible to raise the temperature so that this cooling member can be cooled to cool the molten metal filled in the casting space 5.

Further, forming a cooling hole in the cooling member as the cooling means and penetrating this cooling hole into the casting space of the mold body, and inserting a nozzle into the cooling hole from the outside of the mold body through a spare space, A cooling fluid can be jetted to the cooling hole through the nozzle.

〔The invention's effect〕

A cooling device for a vehicle wheel mold according to the present invention,
In a vehicle wheel mold in which a casting space of a mold body is composed of a spoke molding space portion, a disk molding space portion, and a rim molding space portion, and a cooling means is installed in the mold body, the cooling means is the spoke. Since it is arranged in the connecting portion of the part forming space portion and the rim forming space portion, the connecting portion of the spoke portion forming space portion and the rim forming space portion is locally formed by the cooling means after pouring into the casting space of the mold. Can be cooled to. Therefore, if you want to improve the strength of the root to the rim portion of the spoke portion, if you use the cooling device for the mold of this vehicle wheel, these roots can be locally cooled, so that the conventional root is The strength of these roots can be easily improved without increasing the wall thickness.

Further, a vehicle wheel mold cooling apparatus according to the present invention is a vehicle wheel in which a casting space of a mold body is composed of a spoke molding space portion and a disk molding space portion, and cooling means is installed in the mold body. A mold,
Since the cooling means is arranged in the mold on the back side of the design surface of the connecting portion between the spoke portion forming space portion and the disc forming space portion, the connecting portion between the spoke portion forming space portion and the disc forming space portion is designed. It can be locally cooled by the cooling means arranged in the mold on the back side of the surface. Therefore, if this vehicle wheel mold cooling device is used, in order to reduce the weight of the vehicle wheel, it is possible to thin the meat on the back side of the continuous portion of the wheel's spoke portion and the disc portion to make it thin. Since the cooling means is provided in the mold on the back side of the design surface,
The rear surface of the design surface of the part where the spoke molding space and the disk molding space are connected can be locally cooled, and as a result, a certain level of strength is secured despite the reduction in thickness to reduce weight. be able to. Also, due to the thin wall, reinforcing ribs may be inserted in consideration of safety factor. Even in this case, it is possible to locally cool the back surface side of the design surface of the continuous portion that is thickened by the reinforcing ribs and prevent the occurrence of casting defects.

Further, in the vehicle wheel mold cooling apparatus according to the present invention, the molding space of the mold body is composed of the spoke molding space, the disk molding space and the rim molding space, and the cooling means is installed in the mold body. A mold for a vehicle wheel, wherein a cooling hole is formed in the mold body as the cooling means and the cooling hole is penetrated into a casting space of the mold body, and a nozzle is provided in the cooling hole from the outside of the mold body. It is inserted through an extra space, and a cooling fluid can be ejected to the cooling hole through this nozzle, and the spoke part forming space part and the disk forming space part, or the spoke part forming space part and the rim forming space part. Since it is arranged in the connecting portion with the spoke portion forming space portion and the rim forming space portion by the cooling fluid, or the spoke portion forming space portion and the disc. The connecting portion of the form space can locally cool, as a result, can be installed the cooling device easily.

In addition, a cooling member is installed on the mold body as the cooling means and the cooling member is arranged so as to form a part of a casting space, and the thermal conductivity of the cooling member is higher than that of the mold body. If the cooling member is made higher to be cooled, the cooling efficiency can be further improved.

Further, if a venthoe is used as the cooling hole, the cooling device can be made compact.

[Brief description of the drawings]

The drawings show an embodiment of a cooling system for a mold for a vehicle wheel according to the present invention. FIG. 1 is a sectional view, and FIG. 2 is an enlarged view of a II portion in FIG. M: Mold body (mold) 321 ...... Extra space 331 ...... Extra space 81 ...... Nozzle 5 ...... Casting space 51 ...... Spoke part Molding space part 52 ...... Disc part Molding space part 53 ...... Rim molding space part 6 ... Vent hole (cooling hole)

Claims (5)

(57) [Claims] 1. A mold comprising a casting space of a mold body comprising a spoke molding space portion, a disk molding space portion, and a rim molding space portion, and a vehicle wheel in which cooling means is installed in the mold body. A cooling device for a mold for a vehicle wheel, characterized in that the cooling means is arranged in a continuous portion of the spoke molding space and the rim molding space. 2. A mold for a vehicle wheel, wherein a casting space of a mold body is composed of a spoke molding space and a disk molding space, and cooling means is installed in the mold body, wherein the cooling means is the spoke. A cooling device for a mold for a vehicle wheel, wherein the cooling device is arranged in a mold on the back side of the design surface of a connecting portion between the partial molding space and the disk molding space. 3. A mold for a vehicle wheel, wherein a casting space of a mold body is composed of a spoke molding space portion, a disk molding space portion, and a rim molding space portion, and cooling means is installed in the mold body. A cooling hole is formed in the mold body as a cooling means, and the cooling hole is penetrated into the casting space of the mold body, and a nozzle is inserted into the cooling hole from the outside of the mold body through a spare space. A cooling fluid can be jetted out to the cooling hole via the cooling hole, and the cooling fluid is arranged in a continuous portion of the spoke molding space and the disk molding space or the spoke molding space and the rim molding space. Cooling device for vehicle wheel molds. 4. A cooling member is installed on the mold body as the cooling means, and the cooling member is arranged so as to form a part of a casting space, and the thermal conductivity of the cooling member is set to the thermal conductivity of the mold body. The cooling device for a wheel mold for a vehicle according to claim 1 or 2, characterized in that the cooling member is made higher than the cooling rate so that the cooling member can be cooled. 5. The cooling system for a mold for a vehicle wheel according to claim 3, wherein a vent hole is used as the cooling hole.