Low-temperature casting equipment for automobile aluminum alloy hub

Abstract

The utility model provides low-temperature casting equipment for an automobile aluminum alloy hub, belongs to the technical field of hub casting, and solves the problems that an existing aluminum alloy hub liquid forging die is very simple in structure, but the forging die needs to be naturally cooled due to the fact that a cooling device is not arranged in the hub die; and in the machining process, liquid aluminum alloy is solidified and shaped at the position of a mold slowly, so that the machining treatment effect and the machining speed of the automobile hub are affected. The low-temperature casting equipment for the automobile aluminum alloy hub comprises a lower die plate, side dies fixed to the top of the lower die plate, a lower die fixed between the side dies, an upper die movably connected with the side dies and a water tank, wherein the bottom of the lower die makes contact with the lower die plate. According to the water circulation cooling device, the upper mold and the side mold can be subjected to water circulation cooling at the same time, a hub can be rapidly cooled, the forming speed of the hub can be effectively increased, meanwhile, the design is simple, and normal demolding of the hub cannot be affected.

Description

Technical Field

[0001] The utility model relates to the technical field of wheel hub casting, in particular to a low-temperature casting device for a wheel hub, in particular to a low-temperature casting device for an automobile aluminum alloy wheel hub. Background Art

[0002] The wheel hub is a cylindrical metal part with the inner contour of the tire supporting the tire and the center mounted on the shaft. There are many types of wheel hubs according to diameter, width, molding method and material. Most of the current wheel hubs are processed by low-temperature and low-pressure wheel hub casting method. The low-pressure precision casting method is precision casting under a low pressure of 0.1Mpa. This casting method has good formability, clear contours, uniform density and smooth surface. It can achieve high strength and light weight, and can control costs. The yield rate is more than 90%, which is the mainstream manufacturing method of high-quality aluminum alloy wheels.

[0003] After searching, it is found that a liquid forging die for an aluminum alloy wheel hub is disclosed in a Chinese patent document [Publication No.: CN205147290U]. This aluminum alloy wheel hub liquid forging die solves the following technical problems: gravity casting and low-pressure casting mentioned in the background technology have low density and heavy weight of the casting products in production due to slow solidification speed, and poor mechanical properties. The adopted technical solution: the aluminum alloy wheel hub liquid forging die includes an upper die, an upper die ejector block, a side die, a lower die, a lower die ejector block and a lower die plate. Advantages: The aluminum alloy wheel hub liquid forging die has a simple structure and strong operability.

[0004] The structure of the liquid forging die for the aluminum alloy wheel hub disclosed in the patent is very simple, but since there is no cooling device inside the wheel hub mold, the forging mold needs to be cooled naturally. During processing, the liquid aluminum alloy solidifies and forms at the mold at a relatively slow speed, which affects the processing effect and speed of the automobile wheel hub. Utility Model Content

[0005] The purpose of the utility model is to address the above-mentioned problems in the existing technology and to propose a low-temperature casting device for an automobile aluminum alloy wheel hub. The low-temperature casting device can simultaneously perform water circulation cooling on the upper mold and the side mold, quickly cool the wheel hub, and effectively increase the molding speed of the wheel hub. At the same time, the design is relatively simple and will not affect the normal demoulding of the wheel hub.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A low temperature casting device for an automobile aluminum alloy wheel hub comprises a lower mold plate, a side mold fixed to the top of the lower mold plate, a lower mold fixed between the side mold plates and in contact with the lower mold plate at the bottom, an upper mold movably connected to the side mold plates, and a water tank, and also comprises:

[0008] An annular pipeline is provided inside the side mold, a connecting pipe connected between the annular pipelines and connecting pipes connected to both sides of the side mold, the connecting pipe is connected to the connecting pipe, an annular cooling cavity is provided inside the upper mold, both sides of the top of the upper mold are connected to fixed pipes, a water pump is fixed on the top of the water tank and one side of the water pump is connected to an extraction pipe, and the extraction pipe extends to the inside of the water tank;

[0009] A water inlet pipe is connected to the top of the water pump and is connected to a fixed pipe, a water return pipe is connected to one side of the water tank and is connected to the fixed pipe, a first hose is connected between the connecting pipe and the return pipe, a second hose is connected between the connecting pipe and the water inlet pipe, and a filling pipe is connected to the top of the water tank.

[0010] The working principle of the utility model is: the staff first clamps the upper mold in the side mold, and then the staff can take out the upper ejection block and inject molten aluminum into the mold from the hole and re-fix the upper ejection block, and then the staff turns on the water pump to pump out the water, and after being pumped out, the water enters the mold through the water inlet pipe and the second hose, and the water cools the mold through the annular cooling cavity and the annular pipeline, and then the water re-enters the water tank through the first hose and the return pipe to complete the circulation and cool the mold.

[0011] One end of the extraction pipe is connected to a filter screen, and the filter screen is circular in design.

[0012] The water can be filtered using a filter to remove impurities in the water.

[0013] The top of the filling pipe is threadedly connected with a sealing cover, and a plurality of convex strips are fixed around the sealing cover.

[0014] The filling pipe can be sealed by using a sealing cap.

[0015] The front side of the water tank is connected with a drain pipe, and a control valve is fixed on the surface of the drain pipe.

[0016] The water in the water tank can be drained by using a drain pipe, making it convenient to replace the cooling water.

[0017] The upper mold is movably connected to an upper ejection block inside, and the lower mold plate is movably connected to a lower ejection block inside.

[0018] The wheel hub can be ejected by using the upper ejection block and the lower ejection block.

[0019] The annular pipeline has the same diameter as the connecting pipe, and the annular pipeline is evenly distributed inside the side mold.

[0020] This design can avoid the adhesion of impurities and improve the uniformity of cooling.

[0021] The water inlet pipe and the water return pipe have the same diameter, and the water inlet pipe, the water return pipe and the fixed pipe are all connected by threads.

[0022] The threaded connection allows for easy disassembly and maintenance.

[0023] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0024] 1. The utility model can simultaneously cool down the upper mold and the side mold by water circulation, quickly cool down the wheel hub, effectively improve the forming speed of the wheel hub, and at the same time, the design is relatively simple, which will not affect the normal demoulding of the wheel hub, and solves the problem that the current liquid forging mold structure of the aluminum alloy wheel hub is very simple, but since there is no cooling device inside the wheel hub mold, the forging mold needs to be cooled naturally, and the liquid aluminum alloy is solidified and formed at the mold at a relatively slow speed during processing, which affects the processing effect and processing speed of the automobile wheel hub.

[0025] 2. The utility model can discharge the water in the water tank through the drain pipe, which is convenient for replacing cooling water.

[0026] 3. The utility model can eject the wheel hub through the upper ejection block and the lower ejection block, which is convenient for demoulding. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0028] Figure 2 It is a partial three-dimensional structural schematic diagram of the utility model;

[0029] Figure 3 It is a partial three-dimensional structural schematic diagram of the utility model;

[0030] Figure 4 It is a partial three-dimensional structural sectional view of the utility model.

[0031] In the figure: 1. lower mold; 2. side mold; 3. lower mold; 4. upper mold; 5. water tank; 6. annular pipeline; 7. connecting pipe; 8. connecting pipe; 9. annular cooling chamber; 10. fixed pipe; 11. water pump; 12. extraction pipe; 13. water inlet pipe; 14. return pipe; 15. first hose; 16. second hose; 17. filling pipe; 18. filter screen; 19. sealing cover; 20. drain pipe; 21. control valve; 22. upper ejector block; 23. lower ejector block. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] See also Figure 1-Figure 4 As shown, the low-temperature casting equipment for automobile aluminum alloy wheel hub comprises a lower mold plate 1, a side mold 2, a lower mold 3, an upper mold 4 and a water tank 5. The side mold 2 is fixed to the top of the lower mold plate 1, the lower mold 3 is fixed between the side molds 2 and the bottom is in contact with the lower mold plate 1, the upper mold 4 is movably connected to the side mold 2, an annular pipeline 6 is provided inside the side mold 2, a connecting pipe 7 is connected between the annular pipelines 6, both sides of the side mold 2 are connected with connecting pipes 8, and the connecting pipes 8 are connected with the connecting pipes 7, an annular cooling cavity 9 is provided inside the upper mold 4, both sides of the top of the upper mold 4 are connected with fixed pipes 10, a water pump 11 is fixed on the top of the water tank 5, one side of the water pump 11 is connected with an extraction pipe 12, and the extraction pipe 12 extends to the inside of the water tank 5, and the water The top of the pump 11 is connected with a water inlet pipe 13, which is connected with the fixed pipe 10, one side of the water tank 5 is connected with a water return pipe 14, which is connected with the fixed pipe 10, a first hose 15 is connected between the connecting pipe 8 and the water return pipe 14, a second hose 16 is connected between the connecting pipe 8 and the water inlet pipe 13, and a filling pipe 17 is connected at the top of the water tank 5; the problem that the current liquid forging mold for aluminum alloy wheel hub has a very simple structure, but since no cooling device is provided inside the wheel hub mold, the forging mold needs to be naturally cooled, and the liquid aluminum alloy is solidified and fixed at the mold at a relatively slow speed during processing, thus affecting the processing effect and processing speed of the automobile wheel hub.

[0034] One end of the extraction pipe 12 is connected to a filter screen 18 . The filter screen 18 is circular in design and can filter water to remove impurities in the water.

[0035] The top of the filling pipe 17 is threadedly connected with a sealing cover 19 , and a plurality of convex strips are fixed around the sealing cover 19 . The sealing cover 19 can seal the filling pipe 17 to prevent impurities from entering the water tank 5 .

[0036] The front of the water tank 5 is connected to a drain pipe 20 , and a control valve 21 is fixed on the surface of the drain pipe 20 . The drain pipe 20 can drain the water in the water tank 5 , making it convenient to replace the cooling water.

[0037] An upper ejection block 22 is movably connected inside the upper mold 4, and a lower ejection block 23 is movably connected inside the lower mold plate 1. The upper ejection block 22 and the lower ejection block 23 can eject the wheel hub to facilitate demoulding.

[0038] The diameter of the annular pipeline 6 is the same as that of the connecting pipe 7, and the annular pipeline 6 is evenly distributed inside the side mold 2. This design can prevent impurities from adhering and improve the uniformity of cooling.

[0039] The water inlet pipe 13 and the water return pipe 14 have the same diameter, and the water inlet pipe 13 and the water return pipe 14 are all connected to the fixed pipe 10 by threads, and the threaded connection can be easily disassembled and repaired.

[0040] The working principle of the utility model is as follows: when casting an aluminum alloy wheel hub, the staff first clamps the upper mold 4 in the side mold 2, and then the staff can take out the upper ejection block 22 and inject aluminum liquid into the mold from the hole and re-fix the upper ejection block 22, and then the staff turns on the water pump 11, and the water pump 11 can extract water through the extraction pipe 12, and then enter the mold through the water inlet pipe 13 and the second hose 16, and the water cools the mold through the annular cooling cavity 9 and the annular pipeline 6, and then the water will pass through the first hose 15 and the return pipe 14 to re-enter the water tank 5 to complete the circulation and cool the mold, the filter net 18 at the bottom of the extraction pipe 12 can filter the water to remove impurities in the water, the drain pipe 20 can discharge the water in the water tank 5, which is convenient for replacing the cooling water, and the sealing cover 19 can seal the filling pipe 17 to prevent impurities from entering the water tank 5.

[0041] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A low temperature casting device for an automobile aluminum alloy wheel hub, comprising a lower mold plate (1), a side mold (2) fixed to the top of the lower mold plate (1), a lower mold (3) fixed between the side mold plates (2) and in contact with the lower mold plate (1) at the bottom, an upper mold (4) movably connected to the side mold plates (2) and a water tank (5), characterized in that: Also includes: An annular pipeline (6) is provided inside the side mold (2), a connecting pipe (7) connected between the annular pipelines (6), and a connecting pipe (8) connected to both sides of the side mold (2), wherein the connecting pipe (8) is connected to the connecting pipe (7), an annular cooling chamber (9) is provided inside the upper mold (4), both sides of the top of the upper mold (4) are connected to fixed pipes (10), a water pump (11) is fixed on the top of the water tank (5), and one side of the water pump (11) is connected to an extraction pipe (12), and the extraction pipe (12) extends to the inside of the water tank (5); A water inlet pipe (13) is connected to the top of the water pump (11), and the water inlet pipe (13) is connected to the fixed pipe (10); a water return pipe (14) is connected to one side of the water tank (5), and the water return pipe (14) is connected to the fixed pipe (10); a first hose (15) is connected between the connecting pipe (8) and the water return pipe (14); a second hose (16) is connected between the connecting pipe (8) and the water inlet pipe (13); and a filling pipe (17) is connected to the top of the water tank (5).

2. The low temperature casting equipment for automobile aluminum alloy wheel hub according to claim 1 is characterized in that: One end of the extraction pipe (12) is connected to a filter screen (18), and the filter screen (18) is circular in design.

3. The low temperature casting equipment for automobile aluminum alloy wheel hub according to claim 1 is characterized in that: The top of the filling pipe (17) is threadedly connected with a sealing cover (19), and a plurality of convex strips are fixed around the sealing cover (19).

4. The low temperature casting equipment for automobile aluminum alloy wheel hub according to claim 1 is characterized in that: The front side of the water tank (5) is connected to a drainage pipe (20), and a control valve (21) is fixed on the surface of the drainage pipe (20).

5. The low temperature casting equipment for automobile aluminum alloy wheel hub according to claim 1 is characterized in that: The upper mold (4) is internally movably connected to an upper ejection block (22), and the lower mold plate (1) is internally movably connected to a lower ejection block (23).

6. The low temperature casting equipment for automobile aluminum alloy wheel hub according to claim 1, characterized in that: The annular pipeline (6) has the same diameter as the connecting pipe (7), and the annular pipeline (6) is evenly distributed inside the side mold (2).

7. The low temperature casting equipment for automobile aluminum alloy wheel hub according to claim 1 is characterized in that: The water inlet pipe (13) and the water return pipe (14) have the same diameter, and the water inlet pipe (13) and the water return pipe (14) are both connected to the fixed pipe (10) by threads.

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