Aluminum alloy hub low-pressure casting point cooling structure

Abstract

The utility model relates to the technical field of hub low-pressure casting point cooling, in particular to an aluminum alloy hub low-pressure casting point cooling structure which is arranged on an aluminum alloy hub casting die and used in cooperation with an aluminum alloy hub, the aluminum alloy hub casting die comprises a bottom plate, a bottom die, a side die, a top die and a top plate, and the bottom face of the bottom plate and the top face of the top plate are both planes. According to the utility model, the circular heat conduction bulge is magnetically attracted and fixed through the magnetic block, a cooling medium is introduced into the straight pipe end on one side of the ceramic heat insulation guide pipe from the cooling joint, and flows out and circulates after passing through the bent end, so that the heat conduction efficiency is improved, and the heat conduction efficiency is improved. And the cooling effect in the hub casting process is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of low-pressure casting point cooling of wheel hubs, in particular to a low-pressure casting point cooling structure for aluminum alloy wheel hubs. Background Technique

[0002] In the existing low-pressure casting mold for aluminum alloy wheel hubs, when performing point cooling operations during casting, holes need to be drilled in the mold, which easily causes the mold to crack; the existing cooling pipelines are fixed by threads or directly welded to the bottom mold, making it impossible to achieve quick disassembly and assembly. Moreover, the existing cooling pipes are directly connected by metal pipes and rubber pipes, and the rubber pipes have poor high-temperature resistance and low service life.

[0003] The Chinese patent document with the publication number CN218361989U discloses a mold cooling device for casting processing, including a chassis. The left side surface of the chassis is fixedly connected with a control panel. A cooling box is arranged at the top end of the chassis. Hot water is guided through a guiding plate and flows into the first guiding pipe from the inside of the guiding groove for subsequent cyclic cooling; however, this document cannot be applied to the point cooling operation of wheel hub casting, nor does it disclose how to prevent the mold from cracking, achieve quick disassembly and assembly, and improve the service life.

[0004] In summary, how to design a low-pressure casting point cooling structure for aluminum alloy wheel hubs so that it can meet the point cooling operation of wheel hub casting, prevent the mold from cracking, achieve quick disassembly and assembly, and improve the service life has become a problem that needs to be solved currently. Content of the Utility Model

[0005] The purpose of the utility model is to provide a low-pressure casting point cooling structure for aluminum alloy wheel hubs to solve the above problems.

[0006] To achieve the above purpose, the following technical solutions are provided:

[0007] A low-pressure casting point cooling structure for aluminum alloy wheel hubs is arranged on an aluminum alloy wheel hub casting mold and is used in cooperation with an aluminum alloy wheel hub. The aluminum alloy wheel hub casting mold includes a bottom plate, a bottom mold, side molds, a top mold, and a top plate. The bottom surface of the bottom plate and the top surface of the top plate are both flat. An annular groove is provided at the inner edge of the top surface of the bottom plate. The outer edge of the bottom mold is bent towards the groove of the bottom plate. The bottom surface of the bent part of the bottom mold is attached to the groove top surface of the groove of the bottom plate, and the two are bolted together. Thus, the bottom mold is mounted on the bottom plate. The point cooling structure includes a protruding part. The protruding part of the point cooling structure is attached to the top mold and is used for dissipating heat from the aluminum alloy wheel hub during the low-pressure casting process.

[0008] Preferably, a stepped hole is penetrated through the middle of the bottom plate. The casting mold further includes a bottom mold base which is arranged in the stepped hole with its side wall fitting against the hole wall. The bottom mold base is fixedly connected to the bottom plate, and the bottom mold is correspondingly limited on the bottom mold base.

[0009] Preferably, after the top mold extends a fixed length outward from its middle part, it is bent towards the side wall direction of the aluminum alloy wheel hub. The top mold fits against the inner top surface and side wall of the aluminum alloy wheel hub. The side edge of the top mold is bolted to the top plate. The aluminum alloy wheel hub casting mold includes a plurality of side molds which are evenly arranged along the circumferential direction of the aluminum alloy wheel hub, are arranged towards the center of the aluminum alloy wheel hub, and fit against the outer wall surface of the aluminum alloy wheel hub.

[0010] Preferably, the spot cooling structure is arranged at the part where the top mold extends outward. The spot cooling structure includes a cavity body, a heat conduction joint, a cooling joint, a circular heat conduction protrusion which is arranged in fit with the top mold, and a magnet for disassembly and assembly operations of the spot cooling structure. The cooling joint and the heat conduction joint are respectively arranged on the top and bottom sides of the cavity body. The heat conduction joint is provided with a cylindrical blind hole inward from its bottom surface. The magnet is fixed in the cylindrical blind hole and is magnetically connected to the circular heat conduction protrusion.

[0011] Preferably, the spot cooling structure further includes a ceramic heat insulation conduit. The ceramic heat insulation conduit includes a straight pipe end and a bent end. There are two straight pipe ends. Circular through holes are penetrated through the cavity body and the cooling joint. The straight pipe ends of the ceramic heat insulation conduit sequentially pass through the circular through holes on the cooling joint and the cavity body and are communicated with the bent end. The top surface of the heat conduction joint is provided with a groove. The bent end of the ceramic heat insulation conduit is arranged in the groove of the heat conduction joint.

[0012] Preferably, locking gaskets are arranged on the cavity body, the heat conduction joint, and the cooling joint. The cavity body is bolted to the heat conduction joint and the cooling joint respectively through the locking gaskets. High-temperature resistant sealing gaskets are also arranged between the cavity body and the heat conduction joint and between the cavity body and the cooling joint. The high-temperature resistant sealing gaskets are in fit with the ceramic heat insulation conduit.

[0013] The beneficial effects of the present utility model are as follows:

[0014] 1. In the present utility model, the circular heat conduction protrusion is magnetically fixed by the magnet, and a cooling medium is introduced into one straight pipe end of the ceramic heat insulation conduit from the cooling joint, flows out after passing through the bent end and circulates, so as to achieve the cooling effect during the wheel hub casting process;

[0015] 2. When the mold repair and optimization of the present utility model is required, only the magnetically connected part of the circular heat-conducting protrusion needs to be removed, the circular heat-conducting protrusion is removed, fixed at other positions, and then magnetically fixed to the circular heat-conducting protrusion through the magnetic block again, thus completing the disassembly and transposition process of the point-cooling structure. The operation is simple and does not require changing the mold structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic cross-sectional view of the present utility model and an aluminum alloy wheel casting mold;

[0017] Figure 2 is a schematic cross-sectional view of the present utility model;

[0018] Figure 3 is a schematic top view of the present utility model;

[0019] In the figure:

[0020] 101 - bottom plate, 102 - bottom mold, 103 - side mold, 104 - top mold, 105 - top plate; 106 - stepped hole, 107 - bottom mold base;

[0021] 2 - point-cooling structure, 201 - cavity, 202 - heat-conducting joint, 203 - cooling joint, 204 - circular heat-conducting protrusion, 205 - magnetic block, 206 - straight pipe end, 207 - bent end, 208 - locking gasket, 209 - high-temperature gasket;

[0022] 3 - aluminum alloy wheel. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Next, the technical solutions in the schematic diagrams of the embodiments of the present utility model will be clearly and completely described in conjunction with the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] As Figures 1-3As shown in the figure, a low-pressure casting point cooling structure for an aluminum alloy wheel hub is provided on the casting mold of the aluminum alloy wheel hub and is used in cooperation with the aluminum alloy wheel hub 3. The casting mold of the aluminum alloy wheel hub includes a bottom plate 101, a bottom mold 102, a side mold 103, a top mold 104, and a top plate 105. The bottom surface of the bottom plate 101 and the top surface of the top plate 105 are both flat. An annular groove is provided at the inner edge of the top surface of the bottom plate 101. The outer edge of the bottom mold 102 is bent towards the groove of the bottom plate 101. The bottom surface of the bent part of the bottom mold 102 is fitted with the top surface of the groove of the bottom plate 101, and the two are bolted together. Thus, the bottom mold 102 is erected on the bottom plate 101. The point cooling structure 2 includes a protruding part. The protruding part of the point cooling structure 2 is fitted with the top mold 104 and is used for dissipating heat from the aluminum alloy wheel hub 3 during the low-pressure casting process. During use, the circular heat-conducting protrusion 204 is magnetically fixed by the magnet 205, and a cooling medium is introduced into one straight pipe end 206 of the ceramic heat-insulating conduit from the cooling joint 203, flows out after passing through the bent end 207, and circulates to achieve the cooling effect during the wheel hub casting process;

[0025] In some embodiments, a stepped hole 106 is provided through the middle of the bottom plate 101. The casting mold further includes a bottom mold seat 107. The bottom mold seat 107 is arranged in the stepped hole 106, and its side wall is fitted with the hole wall. The bottom mold seat 107 is fixedly connected to the bottom plate 101, and the bottom mold 102 is correspondingly limited on the bottom mold seat 106;

[0026] In some embodiments, after the top mold 104 extends outward from the middle by a fixed length, it is bent towards the side wall direction of the aluminum alloy wheel hub 3. The top mold 104 is fitted with the inner top surface and the side wall of the aluminum alloy wheel hub 3. The side edge of the top mold 104 is bolted to the top plate 105. The casting mold of the aluminum alloy wheel hub includes a plurality of side molds 103. The side molds 103 are evenly arranged along the circumferential direction of the aluminum alloy wheel hub 3, are arranged towards the center of the aluminum alloy wheel hub 3, and are fitted with the outer wall surface of the aluminum alloy wheel hub 3;

[0027] In some embodiments, the point cooling structure 2 is arranged at the part where the top mold 104 extends outward. The point cooling structure 2 includes a cavity 201, a heat-conducting joint 202, a cooling joint 203, a circular heat-conducting protrusion 204 fitted with the top mold 104, and a magnet 205 for disassembly and assembly operations of the point cooling structure. The cooling joint 203 and the heat-conducting joint 202 are respectively arranged on the top and bottom sides of the cavity 201. The heat-conducting joint 202 is provided with a cylindrical blind hole inward from its bottom surface. The magnet 205 is fixed in the cylindrical blind hole and is magnetically connected to the circular heat-conducting protrusion 204. When mold repair and optimization are required, only the magnetically connected part of the circular heat-conducting protrusion 204 needs to be removed, the circular heat-conducting protrusion 204 is removed, fixed in other positions, and then magnetically fixed to the circular heat-conducting protrusion 204 again through the magnet 205, that is, the disassembly and replacement process of the point cooling structure 2 is completed. The operation is simple and does not require changing the mold structure;

[0028] In some embodiments, the spot cooling structure 2 further includes a ceramic heat insulation conduit, which includes a straight pipe end 206 and a bent end 207. There are two straight pipe ends 206. Circular through holes are respectively and penetratingly formed in the cavity body 201 and the cooling joint 203. The straight pipe end 206 of the ceramic heat insulation conduit sequentially passes through the circular through holes in the cooling joint 203 and the cavity body 201 and is connected to the bent end 207. The top surface of the heat conduction joint 202 is provided with a groove, and the bent end 207 of the ceramic heat insulation conduit is arranged in the groove of the heat conduction joint 202;

[0029] In some embodiments, locking gaskets 208 are provided on the cavity body 201, the heat conduction joint 202, and the cooling joint 203. The cavity body 201 is bolted to the heat conduction joint 202 and the cooling joint 203 respectively through the locking gaskets 208. High-temperature resistant sealing gaskets 209 are further provided between the cavity body 201 and the heat conduction joint 202, and between the cavity body 201 and the cooling joint 203. The high-temperature resistant sealing gaskets 209 are in fit with the ceramic heat insulation conduit.

Claims

1. A low-pressure casting point cooling structure for an aluminum alloy wheel hub, which is arranged on the casting mold of the aluminum alloy wheel hub and is used in cooperation with the aluminum alloy wheel hub. It is characterized in that The aluminum alloy wheel casting die includes a bottom plate, a bottom mold, side molds, a top mold and a top plate. The bottom surface of the bottom plate and the top surface of the top plate are both flat. An annular groove is provided at the inner edge of the top surface of the bottom plate. The outer edge of the bottom mold is bent towards the groove of the bottom plate. The bottom surface of the bent part of the bottom mold is fitted with the top surface of the groove of the bottom plate, and the two are bolted together. Thus, the bottom mold is mounted on the bottom plate. The point cooling structure includes a protruding part. The protruding part of the point cooling structure is fitted with the top mold and is used for dissipating heat from the aluminum alloy wheel during the low-pressure casting process.

2. The low-pressure casting point cooling structure of an aluminum alloy wheel hub according to claim 1, characterized in that, A stepped hole runs through the middle of the bottom plate. The casting die further includes a bottom mold base. The bottom mold base is arranged in the stepped hole, and its side wall is fitted with the hole wall. The bottom mold base is fixedly connected to the bottom plate, and the bottom mold is correspondingly limited on the bottom mold base.

3. The low-pressure casting point cooling structure of an aluminum alloy wheel hub according to claim 2, characterized in that After the top mold extends a fixed length outward from the middle thereof, it is bent towards the side wall of the aluminum alloy wheel. The top mold is fitted with the inner top surface and the side wall of the aluminum alloy wheel. The side edge of the top mold is bolted to the top plate. The aluminum alloy wheel casting die includes a plurality of side molds. The side molds are evenly arranged along the circumferential direction of the aluminum alloy wheel, are arranged towards the center of the aluminum alloy wheel, and are fitted with the outer wall surface of the aluminum alloy wheel.

4. A low-pressure casting point cooling structure for an aluminum alloy wheel hub according to claim 3, characterized in that, The point cooling structure is arranged at the part where the top mold extends outward. The point cooling structure includes a cavity body, a heat conduction joint, a cooling joint, a circular heat conduction protrusion fitted with the top mold, and a magnet for disassembly and assembly operations of the point cooling structure. The cooling joint and the heat conduction joint are respectively arranged on the top and bottom sides of the cavity body. The heat conduction joint is provided with a cylindrical blind hole inward from its bottom surface. The magnet is fixed in the cylindrical blind hole and is magnetically connected to the circular heat conduction protrusion.

5. A low-pressure casting point cooling structure for an aluminum alloy wheel hub according to claim 4, characterized in that, The point cooling structure further includes a ceramic heat insulation conduit. The ceramic heat insulation conduit includes a straight pipe end and a bent end. There are two straight pipe ends. Circular through holes are respectively and penetratingly provided on the cavity body and the cooling joint. The straight pipe ends of the ceramic heat insulation conduit sequentially pass through the circular through holes on the cooling joint and the cavity body and are communicated with the bent end. The top surface of the heat conduction joint is provided with a groove. The bent end of the ceramic heat insulation conduit is arranged in the groove of the heat conduction joint.

6. The low-pressure casting point cooling structure of an aluminum alloy wheel hub according to claim 5, characterized in that, Locking gaskets are provided on the cavity body, the heat conduction joint and the cooling joint. The cavity body is bolted to the heat conduction joint and the cooling joint respectively through the locking gaskets. High-temperature sealing gaskets are also provided between the cavity body and the heat conduction joint and between the cavity body and the cooling joint. The high-temperature sealing gaskets are fitted with the ceramic heat insulation conduit.

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