A casting apparatus for manufacturing an aluminum alloy wheel hub
By improving the design of the casting equipment for aluminum alloy wheel manufacturing, and adopting a combination of lifting, ventilation, mold closing and pressing devices, the problems of uneven casting and uneven cooling were solved, resulting in more efficient aluminum alloy wheel forming and extended equipment life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- PEIXIAN AOYU INTELLIGENT TECHNOLOGY CO LTD
- Filing Date
- 2026-05-19
- Publication Date
- 2026-08-04
AI Technical Summary
Existing casting equipment for manufacturing aluminum alloy wheels suffers from poor casting uniformity and uneven cooling when injecting liquid into the mold space, resulting in severe internal stress, deformation, and wear, and a short service life.
The design employs a combination of lifting mechanism, ventilation mechanism, mold closing mechanism and pressing device. It uses multi-directional permeation of molten metal and utilizes buffer mechanism and sealing plate to improve the sealing and cooling efficiency of the mold space. Combined with the lifting mechanism, it achieves demolding and reduces mold wear and internal stress.
It improves the pouring uniformity and cooling efficiency of the casting equipment, reduces mold wear, extends equipment service life, and enhances production efficiency and the forming quality of aluminum alloy wheels.
Smart Images
Figure CN122500178A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of aluminum alloy wheel technology, specifically to a casting equipment for manufacturing aluminum alloy wheels. Background Technology
[0002] Currently, the automotive industry is developing towards lighter weight, higher speed, safety, energy efficiency, comfort, and less environmental pollution, leading to a significant increase in the use of aluminum alloy components in automobiles. As a crucial component of the vehicle's driving system and a high-requirement safety part, the wheel hub not only bears the weight of the vehicle but also reflects its appearance. Over the past decade, the global production of aluminum alloy automotive wheels has grown at an average annual rate of 7.6%. This demonstrates that with the increasing demand for lightweight vehicles, aluminum alloy wheels are gradually replacing traditional steel wheels and are being widely adopted in modern automotive manufacturing.
[0003] Existing casting equipment for aluminum alloy wheel manufacturing mostly uses a single-pipe flow space when injecting liquid into the mold space. This causes the liquid to spread slowly in one direction, resulting in poor casting uniformity inside the mold and insufficient cooling effect. This leads to internal stress and deformation, as well as severe wear when the parts are in contact with each other, resulting in a short service life of the equipment. Therefore, a new design is needed to address these issues. Summary of the Invention
[0004] To solve the problems mentioned above, the present invention is achieved through the following technical solution: a casting equipment for manufacturing aluminum alloy wheel hubs, including a worktable, the worktable having a square block structure and fixed support legs disposed at the bottom of the square block, a lifting mechanism fixedly connected to the center position of the top of the worktable, a ventilation mechanism fixedly connected to the center position of the top of the lifting mechanism, and mold closing mechanisms fixedly connected to both sides of the top of the worktable. The working top plate has a square shell structure. Support columns are fixedly connected to the four corners of the bottom of the working top plate. The bottom of the support columns is fixedly connected to the top of the worktable. A pressing device is fixedly connected to the center of the top of the working top plate. The lifting mechanism, ventilation mechanism, mold closing mechanism and pressing device work together to form the casting mold shell. After the above components are aligned, the casting liquid is poured in from the top of the pressing device. The molten metal spreads and penetrates according to the contour between the lifting mechanism, ventilation mechanism, mold closing mechanism and pressing device. After the molten metal cools and solidifies, an aluminum alloy wheel hub casting model is obtained, thus realizing the equipment operation function. After the wheel hub is formed, the mold closing mechanism and pressing device shrink or lift. The lifting mechanism lifts the wheel hub from the surface of the ventilation mechanism to complete the demolding operation. The pressing device includes a cover plate with a disc structure, and a buffer mechanism is fixedly connected to the outer circumference of the cover plate. The molten metal enters the mold space through the feeding hopper. The liquid spreads along the internal structure of the mold space. After the molten metal fills the mold space, it cools and solidifies to form an aluminum alloy hub. The feeding hopper has a funnel structure. The bottom of the feeding hopper is connected to the top of the cover plate. The top of the cover plate is fixedly connected to a first electric push rod. The first electric push rod controls the cover plate to squeeze against the ventilation mechanism, forming a sealed space with the mold closing mechanism, which facilitates subsequent casting. After the components fit together, the mold space is formed. The outer side of the first electric push rod is fixedly connected to the top of the working top plate.
[0005] The pressing device also includes a lower drain groove, which is formed on the top of the cover plate and communicates with the inner wall of the cover plate; A sealing plate is located at the bottom of the cover plate, forming part of the mold space and enhancing the sealing effect between components. The sealing plate is cylindrical, and its bottom is fixedly connected to the bottom of the cover plate. A lower trough is opened at the junction of the cover plate and the feed hopper. Several feed pipes are connected to the inner wall of the lower trough to divert and inject the molten metal, thereby achieving uniform injection of molten metal, reducing the impact of molten aluminum on the mold, preventing turbulence, air entrapment, and oxide inclusions, improving filling efficiency, and accelerating the production cycle. The feed pipes are fixedly connected to the inner wall of the lower trough and extend through the cover plate and continue to the sealing plate.
[0006] The buffer mechanism includes a receiving frame, with a buffer housing fixedly connected to the top of the receiving frame. A first spring is fixedly connected to the inner wall of the buffer housing. When the mold closing mechanism and the ventilation mechanism are in contact, the first electric push rod controls the cover plate to press down. The cover plate drives the buffer housing to move, so that the inner wall of the buffer housing aligns with the connecting column. The pressure causes the buffer plate, along with the limiting block, to compress and shrink the first spring, thereby playing a role in shock absorption and buffering, reducing the impact between components, avoiding rigid collisions, protecting the mold, reducing wear, lowering the mold closing speed, and ensuring smooth operation. This prevents mold misalignment and damage to the cavity. A buffer plate is fixedly connected to the other side of the first spring, and a limiting block is fixedly connected to the side of the buffer plate closest to the first spring.
[0007] The mold closing mechanism is provided in two parts. The two mold closing mechanisms are assembled together to form an integrated mold closing execution mechanism. Each of the two mold closing mechanisms has a connecting column fixedly connected to its top. The connecting column is pluggable and adaptable to the buffer mechanism. When the two mold closing mechanisms are aligned and attached, the pressing device presses down and attaches to the top of the mold closing mechanism. The buffer mechanism covers and wraps the connecting column from the top, thereby playing a certain positioning role, ensuring the sealing effect of the mold closing mechanism, avoiding leakage in the mold space, and ensuring the normal operation of the equipment.
[0008] The mold closing mechanism includes a fixed frame, with a second electric push rod fixedly connected to the top of the fixed frame. The output end of the second electric push rod is fixedly connected to a mold closing shell. The mold closing shell is squeezed by the second electric push rod, and the two sides of the mold closing shell are pressed together to form part of the mold space. A docking mechanism is set on the inner wall of the mold closing shell and is part of the mold space, increasing the sealing effect of the mold closing. The docking mechanism is fixedly connected to the inner wall of the mold closing shell. Heat exchange tubes are fixedly connected inside the mold closing shell. The heat exchange tubes are set inside the mold closing shell and designed to fit the curved shape of the mold closing shell to improve the fitting effect with the inner wall of the mold closing shell and improve the cooling efficiency. One side of the heat exchange tube is connected to a water supply pipe and the other side is connected to a water outlet pipe to ensure continuous supply of cold water and maintain the heat exchange and cooling effect.
[0009] The docking mechanism includes a first docking shell and a second docking shell, which are respectively fixedly connected to the inner wall of the mold closing shell. The first docking shell and the second docking shell fit together with the mold closing shell to perform a secondary sealing function, further improving the sealing performance of the mold space, and forming the outline of the wheel hub model. The opposite side walls of the first docking shell and the second docking shell are provided with docking grooves. A docking block is fixedly connected to the side of the second docking shell near the docking groove. The docking groove and the docking block fit together to ensure accurate alignment of the left and right molds, prevent misalignment, ensure tight fit, lock the cavity gaps, prevent aluminum liquid from seeping out, and reduce flash and burrs.
[0010] A second spring is fixedly connected to the inner wall of the docking groove, and a docking plate is fixedly connected to the other side of the second spring. The outer side of the docking plate is slidably connected to the inner wall of the docking groove. When the docking block moves into the docking groove, the docking plate is subjected to the pressure of the docking block, which causes the docking plate to squeeze and contract the second spring, thereby buffering and decompressing the pressure, avoiding hard impact, protecting the mold, eliminating mold closing gaps, making the fit tighter, preventing aluminum liquid from overflowing and generating flash, reducing wear on the mold mating surfaces, and extending the service life of the mold.
[0011] The lifting mechanism includes a lifting housing, inside which a lifting support rod is slidably connected. After the wheel hub mold is formed, the lifting support rod is lifted upward by hydraulic or pneumatic means, thereby pushing the mold to discharge material, reducing excessive mold contact, and improving the operating efficiency of the equipment. A base plate is slidably connected to the outside of the lifting support rod, and a limiting groove is formed on the top of the base plate. When the lifting support rod retracts, it drives the limiting plate to engage with the limiting groove, thereby sealing the interface between the components and preventing the components from sliding down excessively. A limiting plate is fixedly connected to the side of the lifting support rod near the limiting groove. The limiting plate appropriately increases the contact area to prevent the thin components from causing scratches on the surface of the wheel hub.
[0012] The ventilation mechanism includes a ventilation housing with a compressor fixedly connected to its bottom. After the wheel hub mold is discharged, the compressor delivers airflow into the ventilation housing. The airflow is ejected outward from the air inlet, and the airflow pressure causes the ventilation plate to rotate outward, thus ensuring smooth airflow and achieving the effect of flushing the mold surface, reducing impurity adhesion, and avoiding affecting the subsequent casting effect. An air inlet is provided on the outside of the ventilation housing, and a ventilation plate is hinged to the inner wall of the air inlet. The size of the air inlet is slightly smaller than that of the ventilation plate, so that the ventilation plate can only rotate in one direction, preventing liquid from putting pressure on the ventilation plate and creating a gap between the ventilation plate and the air inlet, thus avoiding affecting the air passage. A rubber plate is fixedly connected to the outside of the ventilation plate near the air inlet. The rubber plate increases the friction on the air inlet, improves the sealing effect between the components, and prevents external liquid from entering.
[0013] This invention provides a casting apparatus for manufacturing aluminum alloy wheel hubs. It has the following advantages: 1. This casting equipment for manufacturing aluminum alloy wheel hubs uses a second electric push rod to extrude the mold housing. The two sides of the mold housing are subjected to pressure and fit together to form part of the mold space. The docking mechanism is set on the inner wall of the mold housing and is also part of the mold space, while increasing the sealing effect of the mold. The heat exchange tube is set inside the mold housing and is designed to fit the curved shape of the mold housing to improve the fit with the inner wall of the mold housing and improve the cooling efficiency. One side of the heat exchange tube is connected to a water supply pipe and the other side is connected to a water outlet pipe to ensure a continuous supply of cold water and maintain the heat exchange and cooling effect.
[0014] II. In this casting equipment for manufacturing aluminum alloy wheel hubs, the first mating shell and the second mating shell fit together with the mold closing shell to perform a secondary sealing function, further improving the sealing performance of the mold space. At the same time, they form the outline of the wheel hub model. The mating groove and the mating block fit together to ensure accurate alignment of the left and right molds, prevent misalignment, ensure tight fit, lock the cavity gaps, prevent aluminum liquid from seeping out, and reduce flash and burrs.
[0015] 3. In the casting equipment for manufacturing aluminum alloy wheels, when the mating block moves into the mating groove, the mating plate is subjected to the pressure of the mating block, which causes the mating plate to squeeze and contract the second spring, thereby buffering and decompressing, avoiding hard impact, protecting the mold, eliminating mold closing gap, making the fit tighter, preventing aluminum liquid from overflowing and generating flash, reducing wear on the mold mating surface, and extending the service life of the mold.
[0016] IV. In this casting equipment for manufacturing aluminum alloy wheel hubs, after the wheel hub mold is formed, the lifting support rod is lifted upward by hydraulic or pneumatic means, thereby pushing the mold to discharge material, reducing excessive mold contact, improving the operating efficiency of the equipment, and appropriately increasing the contact area of the limiting plate to avoid scratches on the wheel hub surface caused by excessively thin parts. When the lifting support rod retracts, it drives the limiting plate to engage with the limiting groove, thereby sealing the interface between the parts and preventing the parts from sliding down excessively.
[0017] V. In this casting equipment for manufacturing aluminum alloy wheel hubs, after the wheel hub mold is discharged, airflow is delivered into the vent housing through a compressor. The airflow is ejected outward from the air port, and the airflow pressure causes the vent plate to rotate outward, thereby ensuring smooth airflow and achieving the effect of flushing the mold surface, reducing impurity adhesion, and avoiding affecting the subsequent casting effect. The rubber plate increases the friction on the air port, improves the sealing effect between components, and prevents external liquid from entering. The size of the air port is slightly smaller than that of the vent plate, so that the vent plate can only rotate in one direction, preventing liquid from putting pressure on the vent plate and creating a gap between the vent plate and the air port, thus avoiding affecting the air passage. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the external structure of the casting equipment for manufacturing aluminum alloy wheel hubs according to the present invention; Figure 2 This is a schematic diagram of the ventilation mechanism of the present invention; Figure 3 This is a schematic diagram of the feed hopper structure of the present invention; Figure 4 This is a schematic diagram of the lifting mechanism structure of the present invention; Figure 5 This is a schematic diagram of the first spring structure of the present invention; Figure 6 This is a schematic diagram of the second spring structure of the present invention; Figure 7 This is a schematic diagram of the lifting support structure of the present invention; Figure 8 This is a schematic diagram of the compressor structure of the present invention.
[0019] In the diagram: 1. Workbench; 2. Support column; 3. Top plate; 4. Pressing device; 5. Mold closing mechanism; 6. Lifting mechanism; 7. Ventilation mechanism; 8. Connecting column; 41. First electric push rod; 42. Cover plate; 43. Buffer mechanism; 44. Feed hopper; 46. Lower trough; 47. Sealing plate; 48. Feeding pipe; 431. Receiving frame; 432. Buffer housing; 433. First spring; 434. Buffer plate; 435. Limiting block; 51. Fixing frame; 52. Second electric push rod; 53. Mold closing shell; 54. Heat exchange pipe; 55. Docking mechanism; 551. First docking shell; 552. Docking groove; 553. Second docking shell; 554. Docking block; 555. Second spring; 556. Docking plate; 61. Lifting shell; 62. Lifting support rod; 63. Limiting groove; 64. Limiting plate; 65. Base plate; 71. Vent shell; 72. Air port; 73. Compressor; 74. Vent plate; 75. Glue plate. Detailed Implementation
[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0021] First embodiment, such as Figures 1 to 4 As shown, the present invention provides a technical solution: a casting equipment for manufacturing aluminum alloy wheel hubs, including a workbench 1, which has a square block structure and fixed support legs set at the bottom of the square block. A lifting mechanism 6 is fixedly connected to the center of the top of the workbench 1, a ventilation mechanism 7 is fixedly connected to the center of the top of the lifting mechanism 6, and mold closing mechanisms 5 are fixedly connected to both sides of the top of the workbench 1. The working top plate 3 has a square shell structure. Support columns 2 are fixedly connected to the four corners of the bottom of the working top plate 3. The bottom of the support columns 2 is fixedly connected to the top of the worktable 1. A pressing device 4 is fixedly connected to the center of the top of the working top plate 3. The lifting mechanism 6, the ventilation mechanism 7, the mold closing mechanism 5 and the pressing device 4 work together to form the casting mold shell. After the above components are aligned, the casting liquid is poured in from the top of the pressing device 4. The molten metal spreads and penetrates according to the contour between the lifting mechanism 6, the ventilation mechanism 7, the mold closing mechanism 5 and the pressing device 4. After the molten metal cools and solidifies, the aluminum alloy wheel hub casting model is obtained, thus realizing the equipment operation function. After the wheel hub is formed, the mold closing mechanism 5 and the pressing device 4 shrink or lift. The lifting mechanism 6 lifts the wheel hub from the surface of the ventilation mechanism 7 to complete the demolding operation.
[0022] The mold closing mechanism 5 is provided in two parts. The two mold closing mechanisms 5 are assembled together to form an integrated mold closing execution mechanism. Each mold closing mechanism 5 has a connecting post 8 fixedly connected to its top. The connecting post 8 is plug-in compatible with the buffer mechanism 43. When the two mold closing mechanisms 5 are aligned and attached, the pressing device 4 presses down and attaches to the top of the mold closing mechanism 5. The buffer mechanism 43 covers and wraps the connecting post 8 from the top, thereby playing a certain positioning role, ensuring the sealing effect of the mold closing mechanism 5, avoiding leakage in the mold space, and ensuring the normal operation of the equipment.
[0023] The second embodiment is based on the first embodiment; please refer to [link / reference]. Figures 2 to 8 As shown, the pressing device 4 includes a cover plate 42, which has a disc structure, and a buffer mechanism 43 is fixedly connected to the outer circumference of the cover plate 42. The feeding hopper 44 has a funnel structure. The bottom of the feeding hopper 44 is connected to the top of the cover plate 42. The top of the cover plate 42 is fixedly connected to the first electric push rod 41, and the outer side of the first electric push rod 41 is fixedly connected to the top of the working top plate 3. The first electric push rod 41 controls the cover plate 42 to be squeezed towards the ventilation mechanism 7, forming a sealed space with the mold closing mechanism 5, which facilitates subsequent casting. After the components fit together, a mold space is formed. The molten metal enters the mold space from the feeding hopper 44 and spreads with the internal structure of the mold space. After the molten metal fills the mold space, it cools and solidifies to form an aluminum alloy wheel hub.
[0024] The pressing device 4 also includes a lower drain groove 46, which is formed on the top of the cover plate 42 and communicates with the inner wall of the cover plate 42. A sealing plate 47, cylindrical in shape, is fixedly connected at its bottom to the bottom of a cover plate 42. A feeding pipe 48 is fixedly connected to the inner wall of a lower trough 46, extending through the cover plate 42 and continuing towards the sealing plate 47. The cover plate 42 has a lower trough 46 at its junction with the feed hopper 44. Several feeding pipes 48 are connected to the inner wall of the lower trough 46 to divert and inject the molten metal, thereby achieving uniform injection of the molten metal, reducing the impact of molten aluminum on the mold, preventing turbulence, air entrapment, and oxide inclusions, improving filling efficiency, and accelerating production cycle. The sealing plate 47 is located at the bottom of the cover plate 42, forming part of the mold space and enhancing the sealing effect between components.
[0025] The buffer mechanism 43 includes a receiving frame 431, with a buffer housing 432 fixedly connected to the top of the receiving frame 431. A first spring 433 is fixedly connected to the inner wall of the buffer housing 432, and a buffer plate 434 is fixedly connected to the other side of the first spring 433. A limit block 435 is fixedly connected to the outer side of the buffer plate 434 near the first spring 433. When the mold closing mechanism 5 is in contact with the ventilation mechanism 7, the first electric push rod 41 controls the cover plate 42 to press down. The cover plate 42 drives the buffer housing 432 to move, so that the inner wall of the buffer housing 432 aligns with the connecting column 8. The pressure causes the buffer plate 434, along with the limit block 435, to compress and shrink the first spring 433, thereby playing a role in shock absorption and buffering, reducing the impact between components, avoiding rigid collisions, protecting the mold, reducing wear, reducing the mold closing speed, and ensuring smooth operation to prevent mold misalignment and damage to the cavity.
[0026] In use, the lifting mechanism 6, the ventilation mechanism 7, the mold closing mechanism 5, and the pressing device 4 work together to form the casting mold shell. After the above components are aligned, the casting liquid is poured in from the top of the pressing device 4. The molten metal spreads and penetrates according to the contour between the lifting mechanism 6, the ventilation mechanism 7, the mold closing mechanism 5, and the pressing device 4. After the molten metal cools and solidifies, an aluminum alloy wheel hub casting model is obtained, thus realizing the equipment's operating function. After the wheel hub is formed, the mold closing mechanism 5 and the pressing device 4 shrink or lift. The lifting mechanism 6 lifts the wheel hub from the surface of the ventilation mechanism 7, thus completing the demolding operation.
[0027] There are two mold clamping mechanisms 5. The two left and right mold clamping mechanisms 5 are fitted together to form a mold space. Then, the pressing device 4 presses down from the top of the two fitted mold clamping mechanisms 5, so that the pressing device 4 fits on the top of the mold clamping mechanism 5, thus forming a sealed mold space. Then, it is convenient to pour molten metal, so that the liquid fills the mold space. The liquid follows the contour between the mold clamping mechanism 5, the pressing device 4, the ventilation mechanism 7, and the lifting mechanism 6, thus forming the shape of the aluminum alloy wheel hub, thereby achieving the function of casting.
[0028] 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.
Claims
1. A casting equipment for manufacturing aluminum alloy wheel hubs, characterized in that, include: Workbench (1), which has a square block structure and fixed support legs at the bottom of the square block, a lifting mechanism (6) is fixedly connected to the center of the top of the workbench (1), a ventilation mechanism (7) is fixedly connected to the center of the top of the lifting mechanism (6), and mold closing mechanisms (5) are fixedly connected to both sides of the top of the workbench (1). The working top plate (3) has a square shell structure. Support columns (2) are fixedly connected to the four corners of the bottom of the working top plate (3). The bottom of the support columns (2) is fixedly connected to the top of the worktable (1). A pressing device (4) is fixedly connected to the center of the top of the working top plate (3). The pressing device (4) includes: Cover plate (42), which has a disc structure, and a buffer mechanism (43) is fixedly connected to the outer circumference of the cover plate (42). The feed hopper (44) has a funnel structure. The bottom of the feed hopper (44) is connected to the top of the cover plate (42). The top of the cover plate (42) is fixedly connected to a first electric push rod (41). The outer side of the first electric push rod (41) is fixedly connected to the top of the working top plate (3).
2. The casting equipment for manufacturing aluminum alloy wheel hubs according to claim 1, characterized in that: The pressing device (4) further includes: The lower drain groove (46) is formed on the top of the cover plate (42) and is connected to the inner wall of the cover plate (42); The sealing plate (47) is cylindrical. The bottom of the sealing plate (47) is fixedly connected to the bottom of the cover plate (42). The inner wall of the lower drain groove (46) is fixedly connected to a feeding pipe (48). The feeding pipe (48) passes through the cover plate (42) and extends to the sealing plate (47).
3. The casting equipment for manufacturing aluminum alloy wheel hubs according to claim 1, characterized in that: The buffer mechanism (43) includes a support frame (431), a buffer housing (432) is fixedly connected to the top of the support frame (431), a first spring (433) is fixedly connected to the inner wall of the buffer housing (432), a buffer plate (434) is fixedly connected to the other side of the first spring (433), and a limit block (435) is fixedly connected to the side of the buffer plate (434) near the first spring (433).
4. The casting equipment for manufacturing aluminum alloy wheel hubs according to claim 1, characterized in that: There are two mold closing mechanisms (5). The two mold closing mechanisms (5) are assembled together and linked to form an overall mold closing execution mechanism. The top of each of the two mold closing mechanisms (5) is fixedly connected to a connecting column (8). The connecting column (8) is plugged into and adapted to the buffer mechanism (43).
5. The casting equipment for manufacturing aluminum alloy wheel hubs according to claim 4, characterized in that: The mold closing mechanism (5) includes a fixed frame (51), a second electric push rod (52) is fixedly connected to the top of the fixed frame (51), a mold closing housing (53) is fixedly connected to the output end of the second electric push rod (52), a docking mechanism (55) is fixedly connected to the inner wall of the mold closing housing (53), and heat exchange tubes (54) are fixedly connected inside the mold closing housing (53).
6. The casting equipment for manufacturing aluminum alloy wheel hubs according to claim 5, characterized in that: The docking mechanism (55) includes a first docking shell (551) and a second docking shell (553). The first docking shell (551) and the second docking shell (553) are respectively fixedly connected to the inner wall of the mold closing shell (53). The opposite side walls of the first docking shell (551) and the second docking shell (553) are provided with docking grooves (552). A docking block (554) is fixedly connected to the side of the second docking shell (553) near the docking groove (552).
7. The casting equipment for manufacturing aluminum alloy wheel hubs according to claim 6, characterized in that: The inner wall of the docking groove (552) is fixedly connected to a second spring (555), and the other side of the second spring (555) is fixedly connected to a docking plate (556). The outer side of the docking plate (556) is slidably connected to the inner wall of the docking groove (552).
8. The casting equipment for manufacturing aluminum alloy wheel hubs according to claim 1, characterized in that: The lifting mechanism (6) includes a lifting housing (61), a lifting support rod (62) is slidably connected inside the lifting housing (61), a base plate (65) is slidably connected outside the lifting support rod (62), a limiting groove (63) is formed on the top of the base plate (65), and a limiting plate (64) is fixedly connected to the side of the lifting support rod (62) near the limiting groove (63).
9. The casting equipment for manufacturing aluminum alloy wheel hubs according to claim 1, characterized in that: The ventilation mechanism (7) includes a ventilation housing (71), a compressor (73) is fixedly connected to the bottom of the ventilation housing (71), an air port (72) is opened on the outside of the ventilation housing (71), an air plate (74) is hinged to the inner wall of the air port (72), and a rubber plate (75) is fixedly connected to the outside of the air plate (74) near the air port (72).