CN219025855U

CN219025855U - Aluminum alloy hub casting die

Info

Publication number: CN219025855U
Application number: CN202122289050.4U
Authority: CN
Inventors: 胡晨辉; 陈秉成; 柳涛; 李春博
Original assignee: Changsha Dai Ka Technology Co ltd
Current assignee: Changsha Dai Ka Technology Co ltd
Priority date: 2021-09-22
Filing date: 2021-09-22
Publication date: 2023-05-16
Anticipated expiration: 2031-09-22

Abstract

The utility model discloses an aluminum alloy hub casting mold, which comprises a bottom mold, a top mold capable of longitudinally stretching and demolding and a plurality of side molds capable of transversely stretching and demolding, wherein the bottom mold, the top mold and the side molds are arranged to be spliced to form a hub casting cavity, a liquid lifting pipe for injecting liquid aluminum alloy into the hub casting cavity is arranged at the bottom of the bottom mold, a heat dissipation insert for guiding heat in a hub into air is arranged in the side mold, and the heat dissipation insert is arranged close to an outer rim cavity of the hub casting cavity. According to the utility model, the heat dissipation insert for accelerating heat dissipation is arranged at the outer rim cavity of the hub casting cavity, so that the heat of the outer rim cavity is guided to the air for heat dissipation, on one hand, the problem of low natural cooling efficiency is avoided, and on the other hand, the problem of forming quality and higher energy consumption caused by too fast water cooling is avoided, so that the heat dissipation at the outer rim cavity is accurate and controllable, and the efficiency and the quality are simultaneously considered.

Description

Aluminum alloy hub casting die

Technical Field

The utility model relates to the technical field of automobile hub casting, in particular to an aluminum alloy hub casting die.

Background

The aluminum alloy hub for the automobile is mainly formed by low pressure casting, referring to fig. 1, when casting, the rim of the aluminum alloy hub 100 has uneven thickness due to the function and the modeling, and specifically, the thicknesses of the rim 102, the outer rim 101 and the inner rim 103 are sequentially increased. The temperature field of the casting mold plays a decisive role in the quality of low-pressure casting products, and uneven thickness heat dissipation speed can influence the sequential solidification of molten aluminum in the low-pressure casting process, so that the internal quality problem is caused.

At present, the rim 102 is usually cooled naturally due to the minimum wall thickness during casting. The inner rim 103 is typically water cooled due to the thickest wall thickness. The outer rim 101 with medium thickness adopts a natural cooling or water cooling mode, but the outer rim 101 adopts a natural cooling mode, and the problem that the casting efficiency is affected due to too slow cooling caused by limited heat dissipation capacity is obviously caused; in addition to the high energy consumption, the water cooling method can cause too fast cooling and finally cause quality problems of the outer rim 101 in the casting process even if the cooling water hardly flows. So that the production requirements of high efficiency and high quality at present cannot be met.

Disclosure of Invention

The utility model aims to provide an aluminum alloy hub casting mould so as to solve the problems.

In order to achieve the above purpose, the utility model discloses an aluminum alloy hub casting mold, which comprises a bottom mold, a top mold capable of longitudinally stretching and demolding and a plurality of side molds capable of transversely stretching and demolding, wherein the bottom mold, the top mold and the side molds are arranged to be spliced to form a hub casting cavity, a liquid lifting pipe for injecting liquid aluminum alloy into the hub casting cavity is arranged at the bottom of the bottom mold, a heat dissipation insert for guiding heat in a hub to air is arranged in the side mold, and the heat dissipation insert is arranged close to an outer rim cavity of the hub casting cavity.

Further, one side of the heat dissipation insert is in contact with the hub casting cavity, and the other side of the heat dissipation insert is provided with a plurality of heat dissipation fins extending to the outside.

Further, gaps for increasing the heat dissipation area are arranged between the adjacent heat dissipation fins.

Further, the heat dissipation fins are uniformly distributed, and gaps between adjacent heat dissipation fins are equal.

Further, a heat dissipation counter bore extending towards the hub casting cavity is formed in one side of the side die, and the heat dissipation fins penetrate through the bottom of the heat dissipation counter bore and extend outwards.

Further, the bottom of the heat dissipation counter bore is provided with a heat dissipation side plate with uniform wall thickness, and the distance between the root of the heat dissipation fin and the inner wall of the hub casting cavity is the same.

Further, the heat dissipation insert is detachably connected with the side mold.

Further, the heat dissipation insert is connected with the side mold through screws.

Furthermore, a water cooling insert with a water cooling channel is arranged in the side mold, one side of the water cooling insert is attached to the inner rim cavity of the hub casting cavity, and a water inlet and a water outlet which are connected with the water cooling channel are arranged on the water cooling insert.

Compared with the prior art, the utility model has the advantages that:

according to the utility model, the heat dissipation insert for accelerating heat dissipation is arranged at the outer rim cavity of the hub casting cavity, so that the heat of the outer rim cavity is guided to the air for heat dissipation, on one hand, the problem of low natural cooling efficiency is avoided, and on the other hand, the problem of forming quality and higher energy consumption caused by too fast water cooling is avoided, so that the heat dissipation at the outer rim cavity is accurate and controllable, and the efficiency and the quality are simultaneously considered. The heat dissipation insert is simple in structure, convenient to process, low in energy consumption for die use and convenient for large-scale popularization and application.

The utility model will be described in further detail with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

FIG. 1 is a schematic structural view of an aluminum alloy hub to be cast;

FIG. 2 is an isometric view of an aluminum alloy hub casting mold as disclosed in the preferred embodiment of the utility model;

FIG. 3 is a schematic front view of an aluminum alloy hub casting mold as disclosed in the preferred embodiment of the present utility model;

FIG. 4 is a schematic cross-sectional view A-A of FIG. 3;

fig. 5 is an isometric view of a heat dissipation insert according to a preferred embodiment of the present utility model.

Legend description:

1. a bottom die; 2. a top mold; 3. a lift tube; 4. a side mold; 41. a heat dissipation counter bore; 42. a heat radiation side plate; 5. a hub casting cavity; 51. an outer rim cavity; 52. a rim cavity; 53. an inner rim cavity; 6. water-cooling the insert; 61. a water inlet; 62. a water outlet; 7. a heat dissipation insert; 71. a heat radiation fin; 711. a gap; 8. a screw;

100. an aluminum alloy hub; 101. an outer rim; 102. a rim; 103. an inner rim.

Detailed Description

Embodiments of the utility model are described in detail below with reference to the attached drawings, but the utility model can be implemented in a number of different ways, which are defined and covered by the claims.

As shown in fig. 2-5, the utility model discloses an aluminum alloy hub casting mold, which comprises a bottom mold 1, a top mold 2 capable of longitudinally stretching and demolding and four side molds 4 capable of transversely stretching and demolding, wherein the bottom mold 1 is fixedly installed, the top mold 2 moves up and down longitudinally, the four side molds 4 stretch and move transversely from four directions, the bottom mold 1, the top mold 2 and the side molds 4 are arranged to be spliced to form a hub casting cavity 5, and referring to fig. 4, the hub casting cavity 5 comprises an outer rim cavity 51, a rim cavity 52 and an inner rim cavity 53 from top to bottom, and an outer rim 101, a rim 102 and an inner rim 103 which are respectively cast and formed. The bottom of the bottom die 1 is provided with a lift tube 3 for injecting liquid aluminum alloy into the hub casting cavity 5, and in operation, the liquid aluminum alloy sequentially enters the inner rim cavity 53, the rim cavity 52 and the outer rim cavity 51 from bottom to top. The side mold 4 is internally provided with the heat dissipation insert 7 used for guiding heat in the wheel hub into air, the heat dissipation insert 7 is arranged close to the outer rim cavity 51 of the wheel hub casting cavity 5, the heat dissipation insert 7 can be made of metal with relatively high heat conduction, such as aluminum alloy or copper alloy, and the like, natural heat dissipation capacity in the rim forming process is improved through the heat dissipation insert 7, on one hand, the problem of low natural cooling efficiency can be avoided, and on the other hand, the problem of forming quality and relatively high energy consumption caused by too fast water cooling can be avoided, so that heat dissipation at the outer rim cavity 51 is accurate and controllable, and efficiency and quality can be simultaneously considered. So that the looseness of the outer rim 101 of the low-pressure casting aluminum alloy hub is reduced from 10% to 2%, and the 90-degree impact performance is improved by 30%.

In this embodiment, the heat dissipation insert 7 is made of chiller, one side of the heat dissipation insert is in contact with the hub casting cavity 5, a plurality of heat dissipation fins 71 extending to the outside are arranged on the other side of the heat dissipation insert, gaps 711 are arranged between the adjacent heat dissipation fins 71, wherein the thickness of the heat dissipation fins 71 is 10mm, the width of the gaps 711 is 10mm, the length of the heat dissipation fins 71 is 30mm to 100mm, the heat dissipation area of the heat dissipation insert 7 is greatly increased by the heat dissipation fins 71 arranged at intervals, and the natural heat dissipation capacity in the forming process of the shaped outer rim 101 is improved. In order to ensure uniform heat dissipation of the heat dissipation fins 71, the heat dissipation fins 71 are transversely and uniformly distributed to form a grid shape, and gaps between adjacent heat dissipation fins 71 are equal.

Meanwhile, in order to realize rapid heat conduction of the heat dissipation fins 71 and avoid blocking of the side mold 4, in this embodiment, a heat dissipation counterbore 41 extending toward the hub casting cavity 5 is provided on one side of the side mold 4, and the heat dissipation fins 71 extend outward through the bottom of the heat dissipation counterbore 41. Meanwhile, the bottom of the heat dissipation counter bore 41 is provided with the heat dissipation side plate 42 with uniform wall thickness, and the distance between the root of the heat dissipation fin 71 and the inner wall of the hub casting cavity 5 is the same, so that the annular uniform heat dissipation of the outer rim cavity 51 is ensured, and the casting forming quality is improved.

In this embodiment, the heat dissipation insert 7 is connected with the side mold 4 through the screw 8 longitudinally arranged, so that the heat dissipation insert 7 is firmly and fixedly installed on the side mold 4 in a sealing manner, and meanwhile, the heat dissipation insert 7 can be replaced, so that the heat dissipation speed at the outer rim cavity 51 is controlled by replacing different heat dissipation inserts 7.

In this embodiment, considering that the wall thickness of the inner rim 103 is thickest during molding, in order to balance the heat dissipation speed of the whole hub casting, the inner rim cavity 53 needs to increase the cooling speed, a water cooling insert 6 for accelerating heat dissipation is installed in the side mold 4, a water cooling channel is arranged in the water cooling insert 6, one side of the water cooling insert 6 is attached to the inner rim cavity 53, and the water cooling insert 6 is provided with a water inlet 61 and a water outlet 62 connected with the water cooling channel, so that synchronous heat dissipation and cooling in the hub casting process are realized, and further the casting efficiency is improved.

The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The utility model provides an aluminum alloy wheel hub casting mould, but top mould (2) and a plurality of lateral mould (4) of horizontal flexible drawing of patterns of drawing of patterns including die block (1), but, die block (1), top mould (2) and lateral mould (4) set up to splice formation wheel hub casting chamber (5), the bottom of die block (1) is provided with and is used for to pour into liquid aluminum alloy's stalk (3) in wheel hub casting chamber (5), a serial communication port, install one in lateral mould (4) and be arranged in with the interior heat dissipation mold insert (7) in the wheel hub heat direction air, heat dissipation mold insert (7) are close to outer rim chamber (51) setting in wheel hub casting chamber (5).

2. An aluminium alloy hub casting mould according to claim 1, characterized in that one side of the heat dissipation insert (7) is in contact with the hub casting cavity (5) and the other side is provided with a plurality of heat dissipation fins (71) extending to the outside.

3. The aluminum alloy hub casting mold according to claim 2, wherein a gap (711) for increasing a heat radiation area is provided between adjacent heat radiation fins (71).

4. An aluminum alloy hub casting mold according to claim 3, characterized in that the heat radiating fins (71) are uniformly arranged, and gaps (711) between adjacent heat radiating fins (71) are equal.

5. The aluminum alloy hub casting mold according to claim 2, wherein one side of the side mold (4) is provided with a heat radiation counter bore (41) extending toward the hub casting cavity (5), and the heat radiation fins (71) extend outwardly through a bottom of the heat radiation counter bore (41).

6. The aluminum alloy hub casting mold according to claim 5, wherein a bottom of the heat dissipation counterbore (41) is provided with a heat dissipation side plate (42) with uniform wall thickness, and a root of the heat dissipation fin (71) is the same distance as an inner wall of the hub casting cavity (5).

7. The aluminium alloy hub casting mold according to any one of claims 1 to 6, wherein the heat dissipation insert (7) is detachably connected to the side mold (4).

8. The aluminium alloy hub casting mold according to claim 7, characterized in that the heat dissipation insert (7) is connected with the side mold (4) by means of screws (8).

9. The aluminum alloy hub casting mold according to any one of claims 1 to 6, wherein a water cooling insert (6) with a water cooling channel therein is installed in the side mold (4), one side of the water cooling insert (6) is attached to an inner rim cavity (53) of the hub casting cavity (5), and a water inlet (61) and a water outlet (62) connected with the water cooling channel are arranged on the water cooling insert (6).