Multi-section cooling device of aluminum alloy hub casting mold

Abstract

The invention discloses a multi-section cooling device of an aluminum alloy hub casting mold, and relates to the technical field of hub casting. The device comprises an annular cylinder, the two ends of the annular cylinder are fixedly connected with the inner side face of a mold, the surface of the annular cylinder is arranged to be in a wave shape, the outer side face of a spraying assembly is fixedly connected with the inner side face of the annular cylinder, and the side, away from a water tank, of a water cooling assembly is fixedly connected with the inner side face of the mold; the sides, close to each other, of the upper steam assembly and the lower steam assembly are fixedly connected to the two ends of the mold correspondingly, the annular cylinder of a waveform structure has the larger contact area with circulating clear water, the better cooling effect can be achieved, the spraying assembly sprays atomized water to further cool a casting, multi-section cooling is achieved, molten metal is directionally solidified from the outer layer to the center, and the casting quality is improved. And molten metal in the riser is continuously supplemented to a casting solidification area, so that the defects of shrinkage cavities and shrinkage porosity caused by liquid shrinkage and solidification shrinkage are avoided.

Description

Technical Field

[0001] The invention relates to the technical field of wheel hub casting, and in particular to a multi-stage cooling device for an aluminum alloy wheel hub casting mold. Background Art

[0002] Aluminum alloy wheel casting is a process that injects molten aluminum alloy into the mold cavity, cools and solidifies it, and then demolds and cleans it to obtain a wheel with a specific shape and performance. The core of this process is to utilize the lightweight, corrosion-resistant, and good heat dissipation characteristics of aluminum alloy, combined with mold design and casting technology, so that the molten metal solidifies in a predetermined order within the mold to form the rim, spokes, mounting plate and other structures. This process requires controlling parameters such as melting temperature, filling speed, and cooling rate to ensure high wheel density, accurate dimensional accuracy, and excellent surface quality. It is widely used in the fields of automobiles and motorcycles 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 during the casting process based on the structure and material properties of the casting, and differentiated cooling is implemented in different parts of the mold. By adjusting the cooling rate, cooling medium flow rate, and temperature in each stage, the solidification sequence of the casting can be controlled, directional solidification can be achieved, and defects such as shrinkage cavities and shrinkage porosity can be reduced. The process also refines the grain structure, improves the mechanical properties of the casting, and reduces thermal stress, avoiding deformation and cracking. It is particularly suitable for the production of castings with complex structures and high performance requirements. During the casting of aluminum alloy wheels, molten aluminum is easily wasted in the riser. Due to the structural characteristics of the wheel hub itself, there is a structure near the center of the hub, which also generates a large amount of heat. This can lead to uneven heat dissipation in different parts of the hub, resulting in thermal stress and possible loss of hub quality. To ensure the overall uniformity and overall stability of the hub cooling, specialized cooling is also required. Shrinkage compensation can be achieved through staged cooling. Therefore, a multi-stage cooling device for aluminum alloy wheel casting molds is proposed. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides a multi-stage cooling device for an aluminum alloy wheel hub casting mold, comprising:

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

[0006] A cooling mechanism, the cooling mechanism being fixedly connected to the inside of the water tank and communicating with the mold;

[0007] Wherein, the cooling mechanism comprises:

[0008] An annular cylinder, both ends of which are fixedly connected to the inner side of the mold, and the surface of the annular cylinder is configured to be corrugated;

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

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

[0011] A steam assembly, the steam assembly having an upper and a lower part, wherein the sides of the upper and lower parts of the steam assembly close to each other are fixedly connected to the two ends of the mold respectively;

[0012] The mold is closed and molten aluminum water is injected into the mold cavity. After filling, the water cooling component is started. The water cooling component draws clean water from the water tank. The clean water enters between the inner side of the mold and the outer side of the ring tube to cool the inside of the mold. Then the heated water returns to the water tank through the water cooling component to achieve circulating cooling. The corrugated ring tube has a larger contact area with the circulating clean water, which can achieve a better cooling effect. Then the spray component is started. The spray component draws clean water from between the inner side of the mold and the outer side of the ring tube, and the mist After being molten, it is sprayed out and the atomized water contacts the inner side of the mold near its cavity, further cooling the casting to achieve multi-stage cooling. The water-cooling component first cools the rim, 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 is continuously replenished to the solidification area of ​​the casting to avoid shrinkage cavities and shrinkage defects caused by liquid shrinkage and solidification shrinkage. The steam component extracts the heated and evaporated atomized steam to avoid liquefaction and heat release of steam outside the cavity, ensuring the cooling effect.

[0013] Furthermore, the mold includes a lower mold, the outer side surface of the lower mold is fixedly connected to the inner side surface of the water tank, the side of the lower mold away from the water tank is rigidly clamped with a middle mold, the side of the middle mold away from the lower mold is rigidly clamped with an upper mold, and the outer sides of the middle mold and the upper mold are fixedly connected to the opening and closing mold structure of the casting equipment, and both sides of the middle mold are fixedly connected with a gate tube, and the gate tube is connected to the inner cavity of the middle mold. When the mold is opened, the upper mold rises first, and the spokes, mounting plates, and mounting holes 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 rim is demolded. The setting of the middle mold enables the hub in the lower mold to be ejected when the mold is opened.

[0014] Furthermore, an annular cylinder is provided inside the upper mold and the lower mold, and the ends of the two annular cylinders away from each other are fixedly connected to the inner side surfaces of the upper mold and the lower mold respectively; a hub plate is provided inside the annular cylinder located inside the lower mold, and a spoke frame is provided inside the annular cylinder located inside the upper mold; the spoke frame and the hub plate are fixedly connected on the side away from each other, and the side of the connecting plate away from the center of the annular cylinder is fixedly connected to the inner side surfaces of the two annular cylinders respectively; the upper mold rises, driving the annular cylinder and the connecting plate to rise, driving the spoke frame to rise, realizing demoulding of the spokes, mounting disk and mounting hole, and then the middle mold rises, and the middle mold brings out the entire wheel hub, and the hub plate is stationary, completing the demoulding of the lower half of the outer side of the rim, the spokes and the bottom of the mounting disk, and the various parts of the mold are demoulded in sections, so that the mold cavity is divided into multiple open structures, which can realize rapid demoulding and avoid the casting from getting stuck.

[0015] Furthermore, the spray assembly includes a spray plate, and a spray plate is provided inside the two annular cylinders. The spray plates are hollow, and a plurality of atomizing nozzles are inlaid on the side close to each other of the two spray plates. The outer side surface of the atomizing nozzle is fixedly connected to the inner side surface of the spray plate, and a spray pipe is fixedly connected to the peripheral side of the outer side surface of the spray plate. The spray pipe passes through the annular cylinder away from the spray plate, and the outer side surface of the spray pipe is fixedly connected to the inner side surface of the annular cylinder. There are several spray pipes evenly distributed along the circumference of the spray plate. The atomizing nozzle is started, and the clean water between the mold and the annular cylinder enters the spray pipe, and then enters the hollow interior of the spray plate, and is finally sprayed out from the atomizing nozzle after being atomized. The atomized clean water contacts the surface close to the cavity, evaporates due to heat, and absorbs heat, which can achieve a better cooling effect, realize cooling of the spokes, the mounting plate, and the mounting holes, and realize step-by-step cooling from the outside to the inside.

[0016] Furthermore, the water cooling component includes two short tubes, and the two short tubes are provided with two groups. The two groups of short tubes are symmetrically arranged with the middle mold as the center. Each group of short tubes is provided with two, and the two short tubes are respectively fixedly connected to one side of the upper mold and the lower mold near the short side of the water tank. The ends of the two short tubes close to the upper mold away from each other are fixedly connected to the first hose, and the first hose is bent. The ends of the two short tubes close to the lower mold away from each other are fixedly connected to the second hose, and the end of the second hose away from the lower mold is fixedly connected to the outer side of the first hose. Clean water enters the first hose, and after it is full, the clean water enters the second hose, and finally fills the upper mold and the lower mold through the short tubes. The symmetrical first hose, second hose, and two groups of short tubes form a circulation inside the two cavities formed by the upper mold and the middle mold, and the lower mold and the middle mold to achieve cyclic cooling. The bent first hose cooperates with the second hose and will not affect mold opening.

[0017] Furthermore, the two first hoses are fixedly connected to a connecting pipe and a water pump at one end close to the water tank, and the ends of the water pump and the connecting pipe close to each other are fixedly connected to a serpentine pipe, and the outer side surface of the serpentine pipe is fixedly connected to the bottom of the inner side surface of the water tank. When the water pump is started, the clean water in the water tank passes through the serpentine pipe, the water pump, the first hose, the second hose, and the short pipe in turn, and fills the cavity formed by the upper mold, the lower mold and the middle mold, and then enters the short pipe, the first hose, and the second hose on the other side, and then enters the connecting pipe, and finally returns to the inside of the water tank through the serpentine pipe on the other side to realize circulating water cooling. The setting of the serpentine pipe extends the flow path of clean water in the water tank within a limited space, and cools the drawn clean water more efficiently, thereby achieving better wheel hub water cooling.

[0018] Furthermore, the steam component includes a first steam pipe, which is fixedly connected to a side of the upper mold away from the water tank, and an end of the first steam pipe away from the upper mold is fixedly connected to a first pump body, and an outer side surface of the first pump body is fixedly connected to an outer side surface of the upper mold, and an end of the first pump body away from the first steam pipe is fixedly connected to a first exhaust pipe, and the first exhaust pipe extends to the inside of 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 turn, and finally enters the clean water in the water tank for cooling, so as to avoid the steam liquefying and releasing heat outside the cavity, thereby avoiding affecting the demolding effect of the wheel hub.

[0019] Furthermore, a second steam pipe is fixedly connected to the side of the lower mold close to the water tank, an end of the second steam pipe away from the lower mold is fixedly connected to a second pump body, an end of the second pump body away from the second steam pipe is fixedly connected to 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 avoid the steam liquefying and releasing heat outside the cavity, thereby avoiding affecting the demolding effect of the wheel hub.

[0020] Furthermore, an end of the serpentine tube close to the water pump away from the water pump is fixedly connected to a first drive tube, and an end of the serpentine tube close to the water pump away from the water pump is fixedly connected to a second drive tube. A stirring blade is provided at the interval between the first drive tube and the second drive tube, and the stirring blade is provided directly below the second steam pipe. The stirring blade is fixedly connected to the bottom of the inner side surface of the water tank through a rotating rod. The first drive tube generates suction, and the second drive tube sprays clean water. The staggered and counter-flowing 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 present invention has the beneficial effects:

[0022] 1. The present invention provides a cooling mechanism. The water-cooling component first cools the rim, and then the spray component cools the spokes and mounting plate. This allows the molten metal to directionally solidify from the outer layer toward the center, allowing the molten metal in the riser to continuously replenish the solidification area of ​​the casting, thereby avoiding shrinkage cavities and shrinkage defects caused by liquid shrinkage and solidification shrinkage.

[0023] 2. The present invention sets a mold, the upper mold rises to realize the demoulding of the spokes, mounting plate and mounting holes, the middle mold rises to bring out the entire wheel hub, the hub plate remains stationary, and the demoulding of the lower half of the outer side of the rim, the spokes and the bottom of the mounting plate is completed. The various parts of the mold are demoulded in sections, so that the mold cavity is divided into multiple open structures, which can realize rapid demoulding and avoid the casting from being stuck. The setting of the middle mold enables the ejection of the wheel hub in the lower mold to be completed when the mold is opened.

[0024] 3. The present invention sets a spray component, and the atomizing nozzle atomizes the clean water and then sprays it out. The atomized clean water contacts the surface close to the cavity, evaporates due to heat, and absorbs heat during evaporation, which can achieve a better cooling effect, realize the cooling of the spokes, the mounting plate, and the mounting holes, and realize step-by-step cooling from the outside to the inside. The steam component is used to extract the steam to avoid the steam liquefying and releasing heat outside the cavity, thereby avoiding affecting the demolding effect of the hub.

[0025] 4. The present invention realizes circulating water cooling by setting a water cooling component. The setting of the serpentine tube extends the flow path of clean water in the water tank within a limited space, cools the drawn clean water more efficiently, and realizes better wheel hub water cooling. The ring cylinder with a corrugated structure has a larger contact area with the circulating clean water, which can achieve a better cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0028] Figure 3 Schematic diagram of the cross-sectional structure of the mold of the present invention;

[0029] Figure 4 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 structure of the spray assembly of the present invention;

[0033] Figure 8 This is a schematic structural diagram of the water cooling assembly of the present invention;

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

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

[0036] In the figure: 1. water tank; 2. mold; 21. lower mold; 22. middle mold; 23. upper mold; 24. gate tube; 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 hose; 333. second 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 DESCRIPTION

[0037] The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for purposes of illustration and description and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are chosen and described to better illustrate the principles of the invention and its practical application, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for specific applications.

[0038] Example 1, please refer to Figure 1-Figure 5 The present invention is a multi-stage cooling device for an aluminum alloy wheel hub casting mold, comprising:

[0039] A water tank 1, the inner side of which is fixedly connected to a mold 2;

[0040] The cooling mechanism 3 is fixedly connected to the inside of the water tank 1 and is in communication with the mold 2;

[0041] Wherein, the cooling mechanism 3 includes:

[0042] The ring tube 31 has two ends fixedly connected to the inner side of the mold 2, and the surface of the ring tube 31 is configured to be corrugated;

[0043] The spray assembly 32 is disposed inside the annular tube 31 , and the outer side surface of the spray assembly 32 is fixedly connected to the inner side surface of the annular tube 31 ;

[0044] The water cooling assembly 33 is disposed inside the water tank 1, and the side of the water cooling assembly 33 away from the water tank 1 is fixedly connected to the inner side surface of the mold 2;

[0045] The steam assembly 34 has an upper and a lower part, and the sides of the upper and lower parts of the steam assembly 34 close to each other are fixedly connected to the two ends of the mold 2 respectively;

[0046] The mold 2 is closed, and the molten aluminum water is injected into the cavity of the mold 2. After filling, the water cooling component 33 is started. The water cooling component 33 draws clean water from the water tank 1. The clean water enters between the inner side of the mold 2 and the outer side of the ring cylinder 31 to cool the inside of the mold 2. Then the heated water returns to the inside of the water tank 1 through the water cooling component 33 to achieve circulating cooling. The corrugated structure of the ring cylinder 31 has a larger contact area with the circulating clean water, which can achieve a better cooling effect. Then the spray component 32 is started. The spray component 32 sprays water from the inner side of the mold 2 and the outer side of the ring cylinder 31. Clean water is drawn in between, atomized and sprayed out, the atomized water contacts the inner side of the mold 2 near its cavity, further cooling the casting to achieve multi-stage cooling. The water-cooling component 33 first cools the rim, and then the spray component 32 cools the spokes and mounting plate, so that the metal liquid solidifies directionally from the outer layer to the center, and the metal liquid in the riser is continuously replenished to the solidification area of ​​the casting to avoid shrinkage holes and shrinkage defects caused by liquid shrinkage and solidification shrinkage. The steam component 34 extracts the heated and evaporated atomized steam to avoid liquefaction and heat release of steam outside the cavity, thereby ensuring the cooling effect.

[0047] The mold 2 includes a lower mold 21, the outer side surface of the lower mold 21 is fixedly connected to the inner side surface of the water tank 1, the side of the lower mold 21 away from the water tank 1 is rigidly clamped with the middle mold 22, and the side of the middle mold 22 away from the lower mold 21 is rigidly clamped with the upper mold 23, and the outer sides of the middle mold 22 and the upper mold 23 are fixedly connected to the opening and closing mold structure of the casting equipment, and both sides of the middle mold 22 are fixedly connected with the gate tube 24, and the gate tube 24 is connected to the inner cavity of the middle mold 22. When the mold is opened, the upper mold 23 rises first, and the spokes, mounting plates, and mounting holes 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 rim is demolded. The setting of the middle mold 22 enables the ejection of the wheel hub in the lower mold 21 to be completed when the mold is opened.

[0048] The upper mold 23 and the lower mold 21 are both provided with an annular cylinder 31, and the ends of the two annular cylinders 31 away from each other are fixedly connected to the inner side surfaces of the upper mold 23 and the lower mold 21 respectively. The annular cylinder 31 located inside the lower mold 21 is provided with a hub plate 25, and the annular cylinder 31 located inside the upper mold 23 is provided with a spoke frame 27. The spoke frame 27 and the hub plate 25 are both fixedly connected to a connecting plate 26 on the side away from each other, and the side of the connecting plate 26 away from the center of the annular cylinder 31 is fixedly connected to the two annular cylinders. The inner side of 31 is fixedly connected, the upper mold 23 rises, driving the ring cylinder 31 and the connecting plate 26 to rise, driving the spoke frame 27 to rise, realizing the demoulding of the spoke, the mounting plate and the mounting hole, and then the middle mold 22 rises, the middle mold 22 brings out the entire hub, the hub plate 25 is stationary, completing the demoulding of the lower half of the outer side of the rim, the spoke and the bottom of the mounting plate. The various parts of the mold 2 are demoulded in sections, so that the mold cavity of the mold 2 is divided into multiple open structures, which can realize rapid demoulding 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. The two ring cylinders 31 are each provided with a spray plate 321. The spray plate 321 is hollow. A plurality of atomizing nozzles 322 are embedded on the side of the two spray plates 321 close to each other. The outer side of the atomizing nozzle 322 is fixedly connected to the inner side of the spray plate 321. The outer side of the spray plate 321 is fixedly connected to the spray pipe 323. The side of the spray pipe 323 away from the spray plate 321 passes through the ring cylinder 31, and the outer side of the spray pipe 323 is connected to the ring cylinder. The inner side surface of 31 is fixedly connected, and several spray pipes 323 are evenly distributed along the circumference of the spray disk 321. The atomizing nozzle 322 is started, and the clean water between the mold 2 and the ring cylinder 31 enters the spray pipe 323, and then enters the hollow interior of the spray disk 321, and finally is sprayed out from the atomizing nozzle 322 after being atomized. The atomized clean water contacts the surface close to the cavity, evaporates due to heat, and absorbs heat, which can achieve a better cooling effect, realize the cooling of the spokes, the mounting plate, and the mounting holes, and realize step-by-step cooling from the outside to the inside.

[0050] The water cooling assembly 33 includes a short tube 331, and the short tube 331 is provided with two groups. The two groups of short tubes 331 are symmetrically arranged with the middle mold 22 as the center. Each group of short tubes 331 is provided with two, and the two short tubes 331 are respectively fixedly connected to one 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 tubes 331 close to the upper mold 23 away from each other are fixedly connected to the first hose 332, and the first hose 332 is bent. The ends of the two short tubes 331 close to the lower mold 21 away from each other are fixedly connected to the second hose 333. One 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. After it is full, the clean water enters the second hose 333 and finally fills the upper mold 23 and the lower mold 21 through the short tube 331. The symmetrical first hose 332, second hose 333, and two groups of short tubes 331 form a circulation inside the two cavities formed by the upper mold 23 and the middle mold 22, and the lower mold 21 and the middle mold 22, to achieve cyclic cooling. The curved first hose 332 cooperates with the second hose 333 without affecting the mold opening.

[0051] The ends of the two first hoses 332 close to the water tank 1 are fixedly connected to the connecting pipe 334 and the water pump 335 respectively, and the ends of the water pump 335 and the connecting pipe 334 close to each other are fixedly connected to the serpentine pipe 336, and 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, fills the cavity formed by the upper mold 23, the lower mold 21 and the middle mold 22, and then enters the short pipe 331, the first hose 332, the second hose 333 on the other side, and then enters the connecting pipe 334, and finally 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 the clean water in the water tank 1 within a limited space, and cools the drawn clean water more efficiently, thereby achieving better wheel hub water cooling.

[0052] The steam component 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 the first pump body 342, and the outer side surface of the first pump body 342 is fixedly connected to the outer side surface of the upper mold 23. The end of the first pump body 342 away from the first steam pipe 341 is fixedly connected to the first exhaust pipe 343, and the first exhaust pipe 343 extends to the inside of the water tank 1. Start the first pump body 342, and 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 turn, and finally enters the clean water in the water tank 1 for cooling, so as to avoid the steam liquefying and releasing heat outside the cavity, thereby avoiding 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 close to the water tank 1, and a second pump body 345 is fixedly connected to the end of the second steam pipe 344 away from the lower mold 21. The end of the second pump body 345 away from the second steam pipe 344 is fixedly connected to the second steam pipe 344, and 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 avoid the steam liquefying and releasing heat outside the cavity, thereby avoiding affecting the demolding effect of the wheel hub.

[0054] The end of the serpentine tube 336 close to the water pump 335 away from the water pump 335 is fixedly connected to the first drive tube 347, and the end of the serpentine tube 336 away from the water pump 335 close to the water pump 335 is fixedly connected to the second drive tube 348. A stirring blade 349 is provided at the interval between the first drive tube 347 and the second drive tube 348, and the stirring blade 349 is provided directly below the second steam pipe 344. The stirring blade 349 is fixedly connected to the bottom of the inner side surface of the water tank 1 through a rotating rod. The first drive tube 347 generates suction, and the second drive tube 348 sprays clean water. The staggered and counter-flowing clean water drives the stirring blade 349 to rotate. The stirring blade 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] When in use, the mold 2 is closed, and molten aluminum is injected from the gate. The molten aluminum fills the mold cavity, and 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, and fills the cavity formed by the upper mold 23, the lower mold 21 and the middle mold 22, that is, between the inner side of the upper mold 23 and the lower mold 21 and the outer side of the ring cylinder 31, to cool the inside of the mold 2, and then enter the short pipe 331, the first hose 332, the second hose 333 on the other side, and then enter the connecting pipe 334, and finally return to the inside of the water tank 1 through the serpentine pipe 336 on the other side, realizing circulating water cooling, cooling the rim part, and starting the atomizing nozzle 322. The mold 2 and the ring cylinder 31 are connected. The clean water between them enters the spray pipe 323, and then enters the hollow interior of the spray plate 321, and is finally sprayed out from the atomizing nozzle 322 after being atomized. The atomized clean water contacts the surface close to the cavity, evaporates due to heat, and absorbs heat, cooling the spokes and the mounting plate, so that the molten metal solidifies directionally from the outer layer to the center, and the molten metal in the riser is continuously replenished to the solidification area of ​​the casting, avoiding shrinkage holes and shrinkage defects caused by liquid shrinkage and solidification shrinkage. At the same time, the first driving pipe 347 of the water-cooling component 33 generates suction, and the second driving pipe 348 sprays clean water. The staggered and counter-flowing clean water drives the stirring blade 349 to rotate, and the stirring blade 349 stirs the heated clean water and steam, so that the remaining low-temperature clean water in the water tank 1 is mixed with them;

[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, so as to realize the demoulding of the spokes, mounting plate and mounting holes. Then the middle mold 22 rises, and the middle mold 22 brings out the entire hub. The hub plate 25 is stationary, and the demoulding of the lower half of the outer side of the rim, the spokes and the bottom of the mounting plate is completed.

[0057] Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without making creative efforts 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 shall be implemented in accordance with conventional means in the field unless otherwise specified or limited.

Claims

1. A multi-stage cooling device for an aluminum alloy wheel hub casting mold, characterized in that: include: A water tank (1), wherein the inner side surface of the water tank (1) is fixedly connected to a mold (2); A cooling mechanism (3), wherein the cooling mechanism (3) is fixedly connected to the inside of the water tank (1), and the cooling mechanism (3) is communicated with the mold (2); Wherein, the cooling mechanism (3) comprises: An annular cylinder (31), both ends of which are fixedly connected to the inner side surface of the mold (2), and the surface of the annular cylinder (31) is configured to be corrugated; A spray assembly (32), wherein the spray assembly (32) is arranged inside the annular cylinder (31), and the outer side surface of the spray assembly (32) is fixedly connected to the inner side surface of the annular cylinder (31); A water cooling component (33), wherein the water cooling component (33) is arranged inside the water tank (1), and a side of the water cooling component (33) away from the water tank (1) is fixedly connected to the inner side surface of the mold (2); The steam component (34) comprises an upper and a lower part, and the sides of the upper and lower parts of the steam component (34) close to each other are fixedly connected to the two ends of the mold (2).

2. The multi-stage cooling device for an aluminum alloy wheel hub casting mold according to claim 1, characterized in that: The mold (2) comprises a lower mold (21), the outer side surface of the lower mold (21) is fixedly connected to the inner side surface of the water tank (1), the side of the lower mold (21) away from the water tank (1) is rigidly clamped with a middle mold (22), the side of the middle mold (22) away from the lower mold (21) is rigidly clamped with an upper mold (23), and the outer side surfaces of the middle mold (22) and the upper mold (23) are fixedly connected to the opening and closing mold structure of the casting equipment, and both sides of the middle mold (22) are fixedly connected to a gate pipe (24), and the gate pipe (24) is communicated with the inner cavity of the middle mold (22).

3. The multi-stage cooling device for an aluminum alloy wheel hub casting mold according to claim 2, characterized in that: An annular cylinder (31) is provided inside the upper mold (23) and the lower mold (21). The ends of the two annular cylinders (31) that are away from each other are fixedly connected to the inner side surfaces of the upper mold (23) and the lower mold (21). A hub plate (25) is provided inside the annular cylinder (31) located inside the lower mold (21). A spoke frame (27) is provided inside the annular cylinder (31) located inside the upper mold (23). A connecting plate (26) is fixedly connected to the side of the spoke frame (27) and the hub plate (25) that are away from each other. The side of the connecting plate (26) that is away from the center of the annular cylinder (31) is fixedly connected to the inner side surfaces of the two annular cylinders (31).

4. The multi-stage cooling device for an aluminum alloy wheel hub casting mold according to claim 3, characterized in that: The spray assembly (32) comprises a spray disc (321), the interior of each of the two annular cylinders (31) is provided with a spray disc (321), the spray disc (321) is hollow, and a plurality of atomizing nozzles (322) are inlaid on the side of the two spray discs (321) close to each other, the outer side of the atomizing nozzle (322) is fixedly connected to the inner side of the spray disc (321), and a spray pipe (323) is fixedly connected to the circumference of the outer side of the spray disc (321), and the side of the spray pipe (323) away from the spray disc (321) passes through the annular cylinder (31), and the outer side of the spray pipe (323) is fixedly connected to the inner side of the annular cylinder (31), and a plurality of the spray pipes (323) are evenly distributed along the circumference of the spray disc (321).

5. The multi-stage cooling device for an aluminum alloy wheel hub casting mold according to claim 4, characterized in that: The water cooling assembly (33) includes short tubes (331), and the short tubes (331) are provided in two groups. The two groups of short tubes (331) are symmetrically arranged with the middle mold (22) as the center. Each group of short tubes (331) is provided with two, and the two short tubes (331) are respectively fixedly connected to one 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 tubes (331) close to the upper mold (23) away from each other are fixedly connected to the first hose (332), and the first hose (332) is bent. The ends of the two short tubes (331) close to the lower mold (21) away from each other are fixedly connected to the second hose (333), and 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).

6. The multi-stage cooling device for an aluminum alloy wheel hub casting mold according to claim 5, characterized in that: The ends of the two first hoses (332) close to the water tank (1) are fixedly connected to a connecting pipe (334) and a water pump (335), and the ends of the water pump (335) and the connecting pipe (334) close to each other are fixedly connected to a serpentine pipe (336), and the outer side surface of the serpentine pipe (336) is fixedly connected to the bottom of the inner side surface of the water tank (1).

7. The multi-stage cooling device for an aluminum alloy wheel hub casting mold according to claim 6, characterized in that: The steam assembly (34) includes a first steam pipe (341), the first steam pipe (341) is fixedly connected to a 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 surface of the first pump body (342) is fixedly connected to the outer side surface 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 steam exhaust pipe (343), and the first steam exhaust pipe (343) extends to the inside of the water tank (1).

8. The multi-stage cooling device for an aluminum alloy wheel hub casting mold according to claim 7, characterized in that: A second steam pipe (344) is fixedly connected to a side of the lower mold (21) close to the water tank (1); an end of the second steam pipe (344) away from the lower mold (21) is fixedly connected to a second pump body (345); an end of the second pump body (345) away from the second steam pipe (344) is fixedly connected to the second steam pipe (344); and the second steam pipe (344) is located inside the water tank (1).

9. The multi-stage cooling device for an aluminum alloy wheel hub casting mold according to claim 8, characterized in that: One end of the serpentine tube (336) close to the water pump (335) and away from the water pump (335) is fixedly connected to a first driving tube (347), and one end of the serpentine tube (336) close to the water pump (335) and away from the water pump (335) is fixedly connected to a second driving tube (348). A stirring blade (349) is provided at the interval between the first driving tube (347) and the second driving tube (348), and the stirring blade (349) is provided directly below the second steam pipe (344). The stirring blade (349) is fixedly connected to the bottom of the inner side of the water tank (1) through a rotating rod.

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