A multi-stage cooling device for an aluminum alloy wheel hub casting mold

Abstract

This invention discloses a multi-stage cooling device for aluminum alloy wheel hub casting molds, relating to the field of wheel hub casting technology. The invention includes an annular cylinder, with both ends fixedly connected to the inner surface of the mold. The surface of the annular cylinder is corrugated. The outer surface of a spray assembly is fixedly connected to the inner surface of the annular cylinder. A water-cooling assembly is fixedly connected to the inner surface of the mold on the side away from the water tank. A steam assembly has upper and lower parts, with the sides of the upper and lower steam assemblies respectively fixedly connected to both ends of the mold. The corrugated annular cylinder has a larger contact area with circulating water, achieving a better cooling effect. The spray assembly sprays atomized water to further cool the casting, achieving multi-stage cooling. This allows the molten metal to solidify directionally from the outer layer towards the center, continuously replenishing the solidification area of ​​the casting with molten metal from the riser, avoiding shrinkage cavities and porosity defects caused by liquid shrinkage and solidification shrinkage.

Description

Technical Field

[0001] This invention relates to the field of wheel hub casting technology, and more specifically to a multi-stage cooling device for aluminum alloy wheel hub casting molds. Background Technology

[0002] Aluminum alloy wheel casting is a process that involves injecting molten aluminum alloy into a mold cavity, cooling and solidifying it, and then demolding and cleaning it to obtain a wheel with a specific shape and performance. Its core is to utilize the lightweight, corrosion-resistant, and heat dissipation properties of aluminum alloy, combined with mold design and casting technology, so that the molten metal solidifies in the mold in a predetermined order to form structures such as rim, spokes, and mounting plate. This process requires control of parameters such as melting temperature, filling speed, and cooling rate to ensure that the wheel has high density, accurate dimensions, and excellent surface quality. It is widely used in automobiles, motorcycles and other fields and is an important manufacturing technology for key components of modern transportation equipment.

[0003] Multi-stage cooling in casting refers to a process in which the cooling process is divided into multiple stages based on the structure and material properties of the casting, and different parts of the mold are cooled differently. By adjusting the cooling rate, cooling medium flow rate, and temperature of each stage, the solidification sequence of the casting can be controlled, directional solidification can be achieved, and defects such as shrinkage cavities and porosity can be reduced. It also refines the grain structure, improves the mechanical properties of the casting, and reduces thermal stress, avoiding deformation and cracking. It is especially suitable for the production of castings with complex structures and high performance requirements. In the casting of aluminum alloy wheels, molten aluminum in the riser is easily wasted. Due to the structural characteristics of the wheel hub itself, there is a structure near the center of the hub, which also generates a lot of heat. This may lead to uneven heat dissipation in different parts of the hub, resulting in thermal stress and potentially causing defects in the wheel hub's quality. In order to ensure the overall uniformity and stability of the cooling of the wheel hub, specialized cooling is required. Staged cooling can achieve shrinkage compensation. Therefore, we propose a multi-stage cooling device for aluminum alloy wheel hub casting molds. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides a multi-stage cooling device for aluminum alloy wheel hub casting molds, comprising:

[0005] A water tank, wherein a mold is fixedly connected to the inner side of the water tank;

[0006] A cooling mechanism is fixedly connected inside the water tank and is connected to the mold.

[0007] The cooling mechanism includes:

[0008] A ring cylinder, the two ends of which are fixedly connected to the inner side of the mold, and the surface of the ring cylinder is set as a wave shape;

[0009] A spray assembly is disposed inside the annular cylinder, and the outer side of the spray assembly is fixedly connected to the inner side of the annular cylinder.

[0010] A water-cooling assembly is disposed inside a water tank, and the side of the water-cooling assembly away from the water tank is fixedly connected to the inner side of the mold.

[0011] A steam assembly having upper and lower parts, with the sides of the upper and lower parts of the steam assembly that are close to each other being fixedly connected to both ends of the mold;

[0012] The mold is closed, and molten aluminum is poured into the mold cavity. After filling, the water cooling system is activated, drawing clean water from the water tank. This water enters between the inner side of the mold and the outer side of the ring cylinder, cooling the interior of the mold. The heated water then returns to the water tank through the water cooling system, achieving circulating cooling. The corrugated structure of the ring cylinder provides a larger contact area with the circulating water, resulting in better cooling. Next, the spray system is activated, drawing water from between the inner side of the mold and the outer side of the ring cylinder, creating a mist. After cooling, the atomized water is sprayed out and contacts the inner side of the mold near its cavity, further cooling the casting and achieving multi-stage cooling. The water cooling component first cools the rim area, and then the spray component cools the spokes and mounting plate, causing the molten metal to solidify directionally from the outer layer to the center. The molten metal in the riser continuously replenishes the solidification area of ​​the casting, avoiding shrinkage cavities and porosity defects caused by liquid shrinkage and solidification shrinkage. The steam component extracts the atomized steam that has been heated and evaporated, preventing the steam from liquefying and releasing heat on the outside of the cavity, thus ensuring the cooling effect.

[0013] Furthermore, the mold includes a lower mold, the outer side of which is fixedly connected to the inner side of the water tank. A middle mold is rigidly connected to the side of the lower mold away from the water tank, and an upper mold is rigidly connected to the side of the middle mold away from the lower mold. The outer sides of both the middle mold and the upper mold are fixedly connected to the mold opening and closing structure of the casting equipment. Both sides of the middle mold are fixedly connected to a sprue pipe, which communicates with the inner cavity of the middle mold. When the mold is opened, the upper mold rises first, and the spokes, mounting plate, and mounting hole are demolded. Then the middle mold rises, and the middle mold brings out the entire wheel hub. At the same time, the lower half of the wheel rim is demolded. The middle mold is designed so that the wheel hub inside the lower mold can be ejected when the mold is opened.

[0014] Furthermore, both the upper and lower molds are equipped with annular cylinders inside. The ends of the two annular cylinders that are far apart from each other are fixedly connected to the inner surfaces of the upper and lower molds, respectively. A hub plate is provided inside the annular cylinder inside the lower mold, and a spoke frame is provided inside the annular cylinder inside the upper mold. A connecting plate is fixedly connected to the side of the spoke frame that is far apart from the hub plate. The side of the connecting plate that is far from the center of the annular cylinder is fixedly connected to the inner surfaces of the two annular cylinders, respectively. When the upper mold rises, it drives the annular cylinder and the connecting plate to rise, which in turn drives the spoke frame to rise, thus demolding the spokes, mounting plate, and mounting holes. Subsequently, the middle mold rises, bringing out the entire hub. The hub plate remains stationary, completing the demolding of the lower half of the outer side of the rim, the spokes, and the bottom of the mounting plate. The segmented demolding of each part of the mold makes the mold cavity divided into multiple open structures, which can achieve rapid demolding and avoid the casting from getting stuck.

[0015] Furthermore, the spray assembly includes a spray plate, and both annular cylinders are equipped with spray plates inside. The spray plates are hollow, and several atomizing nozzles are embedded on the side of each spray plate that is close to each other. The outer side of the atomizing nozzles is fixedly connected to the inner side of the spray plate. A spray pipe is fixedly connected to the outer circumference of the spray plate. The side of the spray pipe away from the spray plate passes through the annular cylinder, and the outer side of the spray pipe is fixedly connected to the inner side of the annular cylinder. Several spray pipes are evenly distributed along the circumference of the spray plate. When the atomizing nozzles are activated, the clean water between the mold and the annular cylinder enters the spray pipes, then enters the hollow interior of the spray plate, and finally is atomized and sprayed out from the atomizing nozzles. The atomized clean water comes into contact with the surface near the cavity, is heated and evaporates. Evaporation absorbs heat, which can achieve a better cooling effect, cool the spokes, mounting plate, and mounting holes, and achieve a stepped cooling from the outside to the inside.

[0016] Furthermore, the water-cooling assembly includes short pipes, with two sets of short pipes arranged symmetrically around the middle mold. Each set of short pipes has two pipes, and the two short pipes are respectively fixedly connected to the upper mold and the lower mold near the short side of the water tank. The ends of the two short pipes near the upper mold that are far apart from each other are fixedly connected to a first flexible hose, and the first flexible hose is bent. The ends of the two short pipes near the lower mold that are far apart from each other are fixedly connected to a second flexible hose. The end of the second flexible hose that is far away from the lower mold is fixedly connected to the outer side of the first flexible hose. Clean water enters the first flexible hose, and after it is full, clean water enters the second flexible hose. Finally, the water fills the upper and lower molds through the short pipes. The symmetrical first flexible hose, second flexible hose, and two sets of short pipes form a circulation within the two cavities formed by the upper mold and the middle mold, and the lower mold and the middle mold, to achieve circulating cooling. The bent first flexible hose, in conjunction with the second flexible hose, does not affect the mold opening.

[0017] Furthermore, the two first hoses are respectively fixedly connected to a connecting pipe and a water pump at their ends near the water tank. The ends of the water pump and the connecting pipe that are close to each other are fixedly connected to a serpentine tube, and the outer side of the serpentine tube is fixedly connected to the bottom of the inner side of the water tank. When the water pump is started, the clean water in the water tank passes through the serpentine tube, the water pump, the first hose, the second hose, and the short pipe in sequence, filling the cavity formed by the upper mold, the lower mold, and the middle mold. Then, it enters the short pipe, the first hose, and the second hose on the other side, and then enters the connecting pipe. Finally, it returns to the inside of the water tank through the serpentine tube on the other side, realizing circulating water cooling. The serpentine tube design extends the flow path of clean water in the water tank within a limited space, allowing for more efficient cooling of the drawn clean water and achieving better wheel hub water cooling.

[0018] Furthermore, the steam assembly includes a first steam pipe, which is fixedly connected to the side of the upper mold away from the water tank. A first pump body is fixedly connected to the end of the first steam pipe away from the upper mold. The outer side of the first pump body is fixedly connected to the outer side of the upper mold. A first exhaust pipe is fixedly connected to the end of the first pump body away from the first steam pipe, and the first exhaust pipe extends into the water tank. When the first pump body is started, the steam in the upper mold passes through the first steam pipe, the first pump body, and the first exhaust pipe in sequence, and finally enters the clean water in the water tank for cooling. This prevents the steam from liquefying and releasing heat on the outside of the cavity, thus avoiding affecting the wheel hub demolding effect.

[0019] Furthermore, a second steam pipe is fixedly connected to the side of the lower mold near the water tank, and a second pump body is fixedly connected to the end of the second steam pipe away from the lower mold. The second steam pipe is also fixedly connected to the end of the second pump body away from the second steam pipe, and the second steam pipe is located inside the water tank. Similarly, the steam in the lower mold is also introduced into the clean water to prevent the steam from liquefying and releasing heat on the outside of the cavity, thus avoiding affecting the wheel hub demolding effect.

[0020] Furthermore, a first drive pipe is fixedly connected to the end of the serpentine tube away from the water pump, and a second drive pipe is fixedly connected to the end of the serpentine tube away from the water pump. A stirring blade is provided at the interval between the first drive pipe and the second drive pipe, and the stirring blade is located directly below the second steam pipe. The stirring blade is fixedly connected to the bottom of the inner side of the water tank through a rotating rod. The first drive pipe generates suction, and the second drive pipe sprays out clean water. The alternating and opposing flow of clean water drives the stirring blade to rotate. The stirring blade stirs the heated clean water and steam, so that the remaining low-temperature clean water in the water tank is mixed with it, further ensuring the cooling effect.

[0021] The beneficial effects of this invention are as follows:

[0022] 1. By setting up a cooling mechanism, the water cooling component first cools the rim area, and then the spray component cools the spokes and mounting plate, so that the molten metal solidifies directionally from the outer layer to the center, and the molten metal in the riser continuously replenishes the solidification area of ​​the casting, avoiding shrinkage cavities and porosity defects caused by liquid shrinkage and solidification shrinkage.

[0023] 2. This invention uses a mold to demold the spokes, mounting plate, and mounting holes by raising the upper mold. The middle mold raises to bring out the entire hub, while the hub plate remains stationary, completing the demolding of the lower half of the outer side of the rim, the spokes, and the bottom of the mounting plate. The segmented demolding of each part of the mold divides the mold cavity into multiple open structures, enabling rapid demolding and preventing the casting from getting stuck. The middle mold allows the hub to be ejected from the lower mold immediately upon mold opening.

[0024] 3. This invention, by setting up a spray assembly, uses atomizing nozzles to spray out atomized water. The atomized water comes into contact with the surface near the cavity, and evaporates upon heating. Evaporation absorbs heat, achieving a better cooling effect. This cools the spokes, mounting plate, and mounting holes, achieving a stepped cooling from the outside to the inside. Combined with a steam assembly to export steam, this prevents the steam from liquefying and releasing heat on the outside of the cavity, thus avoiding affecting the wheel hub demolding effect.

[0025] 4. This invention achieves circulating water cooling by setting up a water cooling component. The serpentine tube design extends the flow path of clean water in the water tank within a limited space, allowing for more efficient cooling of the drawn clean water and achieving better hub water cooling. Combined with the corrugated ring cylinder, it has a larger contact area with the circulating clean water, resulting in a better cooling effect. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the multi-stage cooling device structure of the aluminum alloy wheel hub casting mold of the present invention;

[0027] Figure 2 This is a schematic diagram of the multi-stage cooling device for the aluminum alloy wheel hub casting mold of the present invention from another perspective.

[0028] Figure 3 This is a schematic diagram of the cross-sectional structure of the mold of the present invention;

[0029] Figure 4 This is a schematic diagram of the mold cavity structure of the present invention;

[0030] Figure 5 This is a schematic diagram of the mold assembly structure of the present invention;

[0031] Figure 6 This is a schematic diagram of the ring cylinder structure of the present invention;

[0032] Figure 7 This is a schematic diagram of the spray assembly structure of the present invention;

[0033] Figure 8 This is a schematic diagram of the water-cooling component structure of the present invention;

[0034] Figure 9 This is a schematic diagram of the steam assembly structure of the present invention;

[0035] Figure 10 This is a schematic diagram of the stirring blade structure of the present invention.

[0036] In the diagram: 1. Water tank; 2. Mold; 21. Lower mold; 22. Middle mold; 23. Upper mold; 24. Sprue pipe; 25. Hub plate; 26. Connecting plate; 27. Spoke frame; 3. Cooling mechanism; 31. Ring cylinder; 32. Spray assembly; 321. Spray disc; 322. Atomizing nozzle; 323. Spray pipe; 33. Water cooling assembly; 331. Short pipe; 332. First flexible hose; 333. Second flexible hose; 334. Connecting pipe; 335. Water pump; 336. Serpentine pipe; 34. Steam assembly; 341. First steam pipe; 342. First pump body; 343. First exhaust pipe; 344. Second steam pipe; 345. Second pump body; 347. First drive pipe; 348. Second drive pipe; 349. Stirring blade. Detailed Implementation

[0037] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

[0038] Example 1, please refer to Figures 1-5 This invention relates to a multi-stage cooling device for aluminum alloy wheel hub casting molds, comprising:

[0039] Water tank 1, with mold 2 fixedly connected to the inner side of water tank 1;

[0040] Cooling mechanism 3 is fixedly connected inside water tank 1 and is connected to mold 2;

[0041] The cooling mechanism 3 includes:

[0042] The ring cylinder 31 has its two ends fixedly connected to the inner side of the mold 2, and the surface of the ring cylinder 31 is set as a wave shape;

[0043] The spray assembly 32 is disposed inside the ring cylinder 31, and the outer side of the spray assembly 32 is fixedly connected to the inner side of the ring cylinder 31.

[0044] Water cooling component 33 is disposed inside water tank 1, and the side of water cooling component 33 away from water tank 1 is fixedly connected to the inner side of mold 2.

[0045] Steam assembly 34 has two parts, upper and lower, with the upper and lower parts of steam assembly 34 fixedly connected to the two ends of mold 2 on their sides that are close to each other.

[0046] Mold 2 is closed, and molten aluminum is poured into the cavity of mold 2. After filling, the water cooling component 33 is activated, drawing clean water from the water tank 1. The clean water enters between the inner side of mold 2 and the outer side of the ring cylinder 31 to cool the inside of mold 2. Subsequently, the heated water returns to the water tank 1 through the water cooling component 33, achieving circulating cooling. The corrugated structure of the ring cylinder 31 has a larger contact area with the circulating clean water, achieving a better cooling effect. Then, the spray component 32 is activated, spraying water from the inner side of mold 2 and the outer side of the ring cylinder 31. Water is drawn from the mold and atomized before being sprayed out. The atomized water contacts the inner side of the mold 2 near its cavity, further cooling the casting and achieving multi-stage cooling. The water cooling component 33 first cools the rim area, and then the spray component 32 cools the spokes and mounting plate, causing the molten metal to solidify directionally from the outer layer to the center. The molten metal in the riser continuously replenishes the solidification area of ​​the casting, avoiding shrinkage cavities and porosity defects caused by liquid shrinkage and solidification shrinkage. The steam component 34 extracts the atomized steam that has been heated and evaporated, preventing the steam from liquefying and releasing heat on the outside of the cavity, thus ensuring the cooling effect.

[0047] Mold 2 includes a lower mold 21, the outer side of which is fixedly connected to the inner side of the water tank 1. A middle mold 22 is rigidly attached to the side of the lower mold 21 away from the water tank 1, and an upper mold 23 is rigidly attached to the side of the middle mold 22 away from the lower mold 21. The outer sides of both the middle mold 22 and the upper mold 23 are fixedly connected to the mold opening and closing structure of the casting equipment. Both sides of the middle mold 22 are fixedly connected to the sprue pipes 24, which communicate with the inner cavity of the middle mold 22. When the mold is opened, the upper mold 23 rises first, and the spokes, mounting plate, and mounting hole are demolded. Then the middle mold 22 rises, and the middle mold 22 brings out the entire wheel hub. At the same time, the lower half of the wheel rim is demolded. The middle mold 22 is designed so that the wheel hub inside the lower mold 21 can be ejected when the mold is opened.

[0048] Both the upper mold 23 and the lower mold 21 have annular cylinders 31 inside. The ends of the two annular cylinders 31 that are far apart from each other are fixedly connected to the inner surfaces of the upper mold 23 and the lower mold 21, respectively. A hub plate 25 is provided inside the annular cylinder 31 inside the lower mold 21, and a spoke frame 27 is provided inside the annular cylinder 31 inside the upper mold 23. A connecting plate 26 is fixedly connected to the side of the spoke frame 27 that is far apart from the hub plate 25. The side of the connecting plate 26 that is far away from the center of the annular cylinder 31 is connected to both annular cylinders. The inner side of mold 31 is fixedly connected. The upper mold 23 rises, driving the ring cylinder 31 and connecting plate 26 to rise, and driving the spoke frame 27 to rise, realizing the demolding of the spokes, mounting plate and mounting hole. Then the middle mold 22 rises, and the middle mold 22 brings out the entire hub. The hub plate 25 is stationary, completing the demolding of the lower half of the outer side of the rim, the spokes and the bottom of the mounting plate. The various parts of mold 2 are demolded in sections, so that the cavity of mold 2 is divided into multiple open structures, which can realize rapid demolding and avoid the casting from getting stuck.

[0049] Example 2, please refer to Figures 1-10 The spray assembly 32 includes a spray plate 321. Each of the two annular cylinders 31 has a spray plate 321 inside. The spray plate 321 is hollow. Several atomizing nozzles 322 are embedded on the side of each spray plate 321 that is close to each other. The outer surface of the atomizing nozzles 322 is fixedly connected to the inner surface of the spray plate 321. A spray pipe 323 is fixedly connected to the circumference of the outer surface of the spray plate 321. The side of the spray pipe 323 away from the spray plate 321 passes through the annular cylinder 31, and the outer surface of the spray pipe 323 is connected to the annular cylinder. The inner side of the 31 is fixedly connected. Several spray pipes 323 are evenly distributed around the circumference of the spray plate 321. When the atomizing nozzle 322 is activated, the clean water between the mold 2 and the ring cylinder 31 enters the spray pipe 323, then enters the hollow interior of the spray plate 321, and finally is atomized and sprayed out from the atomizing nozzle 322. The atomized clean water comes into contact with the surface close to the cavity, is heated and evaporates. Evaporation absorbs heat, which can achieve a better cooling effect, cool the spokes, mounting plate and mounting holes, and achieve step cooling from the outside to the inside.

[0050] The water-cooling assembly 33 includes short pipes 331, with two sets of short pipes 331 arranged symmetrically around the middle mold 22. Each set has two short pipes 331, which are fixedly connected to the upper mold 23 and the lower mold 21 on the side near the short side of the water tank 1, respectively. The ends of the two short pipes 331 near the upper mold 23 that are furthest from each other are fixedly connected to a first flexible hose 332, which is bent. The ends of the two short pipes 331 near the lower mold 21 that are furthest from each other are fixedly connected to a second flexible hose 333. The end of the second hose 333 away from the lower mold 21 is fixedly connected to the outer side of the first hose 332. Clean water enters the first hose 332 and, after filling it, enters the second hose 333. Finally, the water fills the upper mold 23 and the lower mold 21 through the short pipe 331. The symmetrical first hose 332, second hose 333, and two sets of short pipes 331 form a circulation within the two cavities formed by the upper mold 23 and the middle mold 22, and the lower mold 21 and the middle mold 22, achieving circulating cooling. The bent first hose 332, in conjunction with the second hose 333, will not affect the mold opening.

[0051] Two first hoses 332 are fixedly connected to a connecting pipe 334 and a water pump 335 at their ends near the water tank 1, respectively. The ends of the water pump 335 and the connecting pipe 334 that are close to each other are fixedly connected to a serpentine pipe 336. The outer side of the serpentine pipe 336 is fixedly connected to the bottom of the inner side of the water tank 1. When the water pump 335 is started, the clean water in the water tank 1 passes through the serpentine pipe 336, the water pump 335, the first hose 332, the second hose 333, and the short pipe 331 in sequence, filling the cavity formed by the upper mold 23, the lower mold 21, and the middle mold 22. Then, it enters the short pipe 331, the first hose 332, and the second hose 333 on the other side, and then enters the connecting pipe 334. Finally, it returns to the inside of the water tank 1 through the serpentine pipe 336 on the other side, realizing circulating water cooling. The setting of the serpentine pipe 336 extends the flow path of clean water in the water tank 1 within a limited space, and cools the drawn clean water more efficiently, achieving better wheel hub water cooling.

[0052] The steam assembly 34 includes a first steam pipe 341, which is fixedly connected to the side of the upper mold 23 away from the water tank 1. The end of the first steam pipe 341 away from the upper mold 23 is fixedly connected to a first pump body 342. The outer side of the first pump body 342 is fixedly connected to the outer side of the upper mold 23. The end of the first pump body 342 away from the first steam pipe 341 is fixedly connected to a first exhaust pipe 343, which extends into the water tank 1. When the first pump body 342 is started, the steam in the upper mold 23 passes through the first steam pipe 341, the first pump body 342, and the first exhaust pipe 343 in sequence, and finally enters the clean water in the water tank 1 to cool down, so as to avoid the steam from liquefying and releasing heat on the outside of the cavity and thus avoid affecting the demolding effect of the wheel hub.

[0053] A second steam pipe 344 is fixedly connected to the side of the lower mold 21 near the water tank 1. A second pump body 345 is fixedly connected to the end of the second steam pipe 344 away from the lower mold 21. A second steam pipe 344 is fixedly connected to the end of the second pump body 345 away from the second steam pipe 344. The second steam pipe 344 is located inside the water tank 1. Similarly, the steam in the lower mold 21 is also introduced into the clean water to prevent the steam from liquefying and releasing heat on the outside of the cavity, thus avoiding affecting the demolding effect of the wheel hub.

[0054] A first drive pipe 347 is fixedly connected to the end of the serpentine pipe 336 away from the water pump 335, and a second drive pipe 348 is fixedly connected to the end of the serpentine pipe 336 away from the water pump 335. An agitator 349 is provided at the interval between the first drive pipe 347 and the second drive pipe 348, and the agitator 349 is located directly below the second steam pipe 344. The agitator 349 is fixedly connected to the bottom of the inner side of the water tank 1 through a rotating rod. The first drive pipe 347 generates suction, and the second drive pipe 348 sprays clean water. The alternating and opposing flow of clean water drives the agitator 349 to rotate. The agitator 349 stirs the heated clean water and steam, so that the remaining low-temperature clean water in the water tank 1 is mixed with it, further ensuring the cooling effect.

[0055] In use, mold 2 is closed, and molten aluminum is injected through the gate, filling the cavity. Water pump 335 is activated, and clean water from water tank 1 flows sequentially through serpentine pipe 336, water pump 335, first flexible hose 332, second flexible hose 333, and short pipe 331, filling the cavity formed by upper mold 23, lower mold 21, and middle mold 22, specifically between the inner surfaces of upper mold 23 and lower mold 21 and the outer surface of ring cylinder 31, cooling the interior of mold 2. The water then flows through short pipe 331, first flexible hose 332, and second flexible hose 333 on the other side, then into connecting pipe 334, and finally returns to water tank 1 through serpentine pipe 336 on the other side, achieving circulating water cooling to cool the rim area. Atomizing nozzle 322 is activated, and the mold 2 and ring cylinder 31... The clean water enters the spray pipe 323, then enters the hollow interior of the spray plate 321, and finally is atomized and sprayed out from the atomizing nozzle 322. The atomized clean water comes into contact with the surface near the cavity, is heated and evaporates. The evaporation absorbs heat and cools the spokes and mounting plate, causing the molten metal to solidify directionally from the outer layer to the center. The molten metal in the riser continuously replenishes the solidification area of ​​the casting, avoiding shrinkage cavities and porosity defects caused by liquid shrinkage and solidification shrinkage. At the same time, the first drive pipe 347 of the water cooling component 33 generates suction, and the second drive pipe 348 sprays clean water. The staggered and opposing flow of clean water drives the stirring blade 349 to rotate. The stirring blade 349 stirs the heated clean water and steam, mixing the remaining low-temperature clean water in the water tank 1 with it.

[0056] When the mold is opened, the upper mold 23 rises first, driving the ring cylinder 31 and the connecting plate 26 to rise, and driving the spoke frame 27 to rise, realizing the demolding of the spokes, mounting plate and mounting hole. Then the middle mold 22 rises, and the middle mold 22 brings out the entire hub. The hub plate 25 is stationary, completing the demolding of the lower half of the outer side of the rim, the spokes and the bottom of the mounting plate.

[0057] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A multi-stage cooling device for an aluminum alloy wheel hub casting mold, characterized in that, include: Water tank (1), the inner side of which is fixedly connected to a mold (2); Cooling mechanism (3) is fixedly connected inside water tank (1) and is connected to mold (2); The cooling mechanism (3) includes: The two ends of the ring cylinder (31) are fixedly connected to the inner side of the mold (2), and the surface of the ring cylinder (31) is set as a wave shape; Spray assembly (32), the spray assembly (32) is disposed inside the ring cylinder (31), and the outer side of the spray assembly (32) is fixedly connected to the inner side of the ring cylinder (31); Water cooling component (33), the water cooling component (33) is disposed inside the water tank (1), and the side of the water cooling component (33) away from the water tank (1) is fixedly connected to the inner side of the mold (2); Steam assembly (34) has two parts, upper and lower, and the upper and lower parts of the steam assembly (34) are respectively fixedly connected to the two ends of the mold (2) on the side that is close to each other. The mold (2) includes a lower mold (21), the outer side of the lower mold (21) is fixedly connected to the inner side of the water tank (1), the side of the lower mold (21) away from the water tank (1) is rigidly connected to a middle mold (22), the side of the middle mold (22) away from the lower mold (21) is rigidly connected to an upper mold (23), and the outer sides of the middle mold (22) and the upper mold (23) are both fixedly connected to the opening and closing mold structure of the casting equipment. The two sides of the middle mold (22) are fixedly connected to a sprue pipe (24), and the sprue pipe (24) communicates with the inner cavity of the middle mold (22). Both the upper mold (23) and the lower mold (21) are provided with annular cylinders (31). The ends of the two annular cylinders (31) that are far apart from each other are fixedly connected to the inner sides of the upper mold (23) and the lower mold (21), respectively. The annular cylinder (31) inside the lower mold (21) is provided with a hub plate (25). The annular cylinder (31) inside the upper mold (23) is provided with a spoke frame (27). The spoke frame (27) and the hub plate (25) that are far apart from each other are fixedly connected with a connecting plate (26). The side of the connecting plate (26) that is far away from the center of the annular cylinder (31) is fixedly connected to the inner sides of the two annular cylinders (31), respectively. The water-cooling assembly (33) includes short pipes (331), and two sets of short pipes (331) are provided. The two sets of short pipes (331) are symmetrically arranged with the middle mold (22) as the center. Each set of short pipes (331) has two pipes, and the two short pipes (331) are respectively fixedly connected to the side of the upper mold (23) and the lower mold (21) near the short side of the water tank (1). The ends of the two short pipes (331) near the upper mold (23) that are far apart from each other are fixedly connected to a first flexible hose (332), and the first flexible hose (332) is bent. The ends of the two short pipes (331) near the lower mold (21) that are far apart from each other are fixedly connected to a second flexible hose (333). The end of the second flexible hose (333) that is far away from the lower mold (21) is fixedly connected to the outer side of the first flexible hose (332).

2. The multi-stage cooling device for an aluminum alloy wheel hub casting mold according to claim 1, characterized in that: The spray assembly (32) includes a spray plate (321). Both of the two annular cylinders (31) are equipped with spray plates (321). The spray plates (321) are hollow. Several atomizing nozzles (322) are embedded on the side of the two spray plates (321) that are close to each other. The outer side of the atomizing nozzles (322) is fixedly connected to the inner side of the spray plate (321). A spray pipe (323) is fixedly connected to the outer side of the spray plate (321). The side of the spray pipe (323) away from the spray plate (321) passes through the annular cylinder (31). The outer side of the spray pipe (323) is fixedly connected to the inner side of the annular cylinder (31). Several spray pipes (323) are evenly distributed along the circumference of the spray plate (321).

3. The multi-stage cooling device for an aluminum alloy wheel hub casting mold according to claim 1, characterized in that: Two of the first hoses (332) are fixedly connected to a connecting pipe (334) and a water pump (335) at one end near the water tank (1), respectively. The water pump (335) and the connecting pipe (334) are fixedly connected to a serpentine pipe (336) at the ends near each other, and the outer side of the serpentine pipe (336) is fixedly connected to the bottom of the inner side of the water tank (1).

4. The multi-stage cooling device for an aluminum alloy wheel hub casting mold according to claim 3, characterized in that: The steam assembly (34) includes a first steam pipe (341), which is fixedly connected to the side of the upper mold (23) away from the water tank (1). A first pump body (342) is fixedly connected to the end of the first steam pipe (341) away from the upper mold (23). The outer side of the first pump body (342) is fixedly connected to the outer side of the upper mold (23). A first exhaust pipe (343) is fixedly connected to the end of the first pump body (342) away from the first steam pipe (341), and the first exhaust pipe (343) extends into the interior of the water tank (1).

5. The multi-stage cooling device for an aluminum alloy wheel hub casting mold according to claim 4, characterized in that: The lower mold (21) is fixedly connected to a second steam pipe (344) on the side near the water tank (1). The second steam pipe (344) is fixedly connected to a second pump body (345) at the end away from the lower mold (21). The second pump body (345) is fixedly connected to a second steam pipe (344) at the end away from the second steam pipe (344), and the second steam pipe (344) is located inside the water tank (1).

6. The multi-stage cooling device for an aluminum alloy wheel hub casting mold according to claim 5, characterized in that: A first drive pipe (347) is fixedly connected to the end of the serpentine pipe (336) away from the water pump (335), and a second drive pipe (348) is fixedly connected to the end of the serpentine pipe (336) away from the water pump (335) near the water pump (335). An agitator (349) is provided at the interval between the first drive pipe (347) and the second drive pipe (348), and the agitator (349) is located directly below the second steam pipe (344). The agitator (349) is fixedly connected to the bottom of the inner side of the water tank (1) through a rotating rod.

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