A die-casting device for motor casing

Abstract

The present invention belongs to the field of electric motor casing manufacturing and discloses a motor casing die-casting device, comprising a bracket, a hydraulic device fixedly provided above the bracket, a heating furnace movably provided below the hydraulic device, a rotating device adapted to be provided on one side of the hydraulic device, a circulation device adapted to be provided on one side of the rotating device, a cooling device fixed to one end of the circulation device, an exhaust fan provided on one side of the cooling device, a transmission device fixed to the inner wall of the circulation device, and a purification device provided above the circulation device; the present invention aims to provide a motor casing die-casting device, which can achieve precise heating and rapid cooling of die-cast materials, effectively improving the molding quality of the casing; at the same time, it has an efficient gas purification function, significantly improving the working environment; in addition, by optimizing the structural design of the device, the collaborative working efficiency between the components is improved, thereby improving the overall production efficiency and reducing production costs.

Description

Technical Field

[0001] The present invention relates to the technical field of motor housing manufacturing, and specifically to a die-casting device for motor housings. Background Art

[0002] In modern industrial production, motors, as the core power components of various mechanical devices, have an extremely wide range of applications, covering multiple fields such as industrial production, transportation, and household appliances. The motor housing, as an important part of the motor, not only plays a role in protecting key components such as the internal motor winding and rotor, but also has an important impact on the heat dissipation performance, mechanical strength, and overall stability of the motor. Therefore, the quality and performance of the motor housing are directly related to the reliability and service life of the motor.

[0003] Publication No.: CN110729864B provides a die-casting device for low-pressure casting motor housings, including a die-casting machine frame, a slide rail, a heating furnace, a die-casting mold, a workpiece fixture, and a heating mold. The slide rail is arranged below the die-casting machine frame, and a heating furnace is arranged on the slide rail. A workpiece fixture that can be opened and closed is arranged in front of the manipulator on the die-casting machine frame, and a die-casting mold is arranged above the workpiece fixture; a heating mold is also arranged between the workpiece fixture and the die-casting machine frame. Although the above invention has a reasonable structure, fast workpiece picking and placing speed, does not damage the workpiece, and has the functions of convenient workpiece picking and easy fixture replacement.

[0004] However, after die-casting is completed, the above invention does not have a cooling effect, resulting in a cooling process that is often not rapid and uniform enough. If natural cooling or simple air cooling methods are used, the cooling speed is slow, and the internal thermal stress of the housing cannot be eliminated in time, easily causing the housing to deform, reducing the dimensional accuracy and qualification rate of the product. Moreover, uneven cooling may also cause a temperature gradient on the surface of the housing, resulting in a decline in surface quality and increasing the difficulty and cost of subsequent processing.

[0005] At the same time, in terms of gas treatment, a large amount of harmful gases and dust will be generated during the cooling process. If these gases and dust cannot be purified and treated in a timely and effective manner, it will not only cause serious pollution to the working environment, threaten the physical health of operators, and cause occupational hazards such as respiratory diseases and skin diseases, but also may cause corrosion and damage to the equipment, shortening the service life of the equipment.

[0006] Therefore, a die-casting device for motor housings is proposed to overcome the deficiencies of the prior art, improve the production quality and efficiency of motor housings, reduce production costs, and reduce environmental pollution. Summary of the Invention

[0007] The present invention aims to provide a die-casting device for a motor housing, which can achieve precise heating and rapid cooling of die-casting materials, effectively improving the forming quality of the housing; at the same time, it has an efficient gas purification function, significantly improving the working environment; in addition, by optimizing the structural design of the device, the collaborative working efficiency between components is improved, thereby enhancing the overall production efficiency and reducing production costs.

[0008] To achieve the above object, the present invention provides the following technical solutions: The technical solution provided by the present invention is: a die-casting device for a motor housing, including a bracket, a hydraulic device is fixedly arranged above the bracket, a heating furnace is movably arranged below the hydraulic device, a rotating device is adaptively arranged on one side of the hydraulic device, a circulating device is adaptively arranged on one side of the rotating device, a cooling device is fixedly arranged at one end of the circulating device, an exhaust fan is arranged on one side of the cooling device, a transmission device is fixedly arranged on the inner wall of the circulating device, and a purification device is arranged above the circulating device; The hydraulic device includes support plates installed at both ends of the bracket, positioning rods are fixedly arranged inside the support plates, a hydraulic press is fixedly arranged on one side of the support plates, a hydraulic rod is fixedly arranged at the output end of the hydraulic press, a hydraulic mold is fixedly arranged at one end of the hydraulic rod, a limiting plate is fixedly arranged on one side of the hydraulic mold, the limiting plate is movably installed on the surface of the positioning rod, and a positioning plate is fixedly arranged at the other end of the support plate.

[0009] Furthermore, a slide rail is adaptively arranged below the heating furnace.

[0010] Furthermore, the rotating device includes a fixing plate fixedly installed on one side of the support plate, a rotating motor is fixedly arranged on one side of the fixing plate, a rotating plate is arranged at the output end of the rotating motor, placing molds are fixedly arranged at both ends of the rotating plate, and the placing molds are movably placed on the surface of the positioning plate.

[0011] Furthermore, the circulating device includes a circulating box, a partition plate is fixedly arranged inside the circulating box, the circulating box is divided into a gas box and a water storage box by the partition plate, a circulating plate is inclinedly arranged on one side of the inner wall of the circulating box, a circulating air duct is fixedly arranged on one side of the circulating plate, and a ventilation box is provided in the circulating box through the circulating plate.

[0012] Furthermore, the cooling device includes a cooling tank fixedly installed at one end of the circulating box, the cooling tank is arc-shaped and adapted to the rotation radian of the placing mold, and a plurality of atomizing nozzles are evenly arranged inside the cooling tank.

[0013] Furthermore, the transmission device includes a transmission rod movably and snap-fitted on one side of the inner wall of the gas tank. One end surface of the transmission rod is fixedly provided with a transmission wind wheel. One side of the transmission rod is fixedly provided with a transmission plate. One side of the transmission plate is fixedly provided with an eccentric rod. The surface of the eccentric rod is movably and snap-fitted with a connecting rod. A transmission shaft is movably arranged below the connecting rod. A negative pressure air bag is fixedly arranged below the transmission shaft. A water suction pipe is fixedly arranged below the negative pressure air bag. A fixing rod is arranged on the side of the water suction pipe and is fixedly installed below the inner wall of the water storage tank. A circulating pipe is fixedly arranged on the side of the water suction pipe. One end of the circulating pipe is connected and communicated with a spray head.

[0014] Furthermore, the purification device includes a purification tower fixedly installed above the gas tank, and a plurality of purification filter plates are evenly arranged in the purification tower.

[0015] The beneficial effects of this technical solution are as follows: (1) The spray head of the cooling device can atomize water evenly and spray it on the surface of the placement mold. Utilizing the principle of heat absorption by water vaporization, it can quickly reduce the temperature of the mold and the die-casting material. The uniform cooling process can avoid stress concentration inside the casing caused by uneven temperature changes, thereby reducing quality problems such as casing deformation and cracks. At the same time, rapid cooling can enable the casing to be quickly cooled and shaped, improving the hardness and strength of the casing and further enhancing its quality and performance.

[0016] (2) The design of the rotating device enables the placement mold to quickly switch between different processes such as die-casting and cooling. In traditional die-casting devices, after one die-casting is completed, it is necessary to manually transport the mold to the cooling area, which is not only time-consuming and laborious but also prone to operation errors. However, in this device, the rotating plate is driven by a rotating motor, and the placement mold can be rotated from the die-casting position to the cooling position in a short time, and at the same time, the cooled idle mold can be rotated to the die-casting position, realizing seamless connection of processes and greatly reducing the waiting time in the production process.

[0017] (3) The coordinated work of the circulating device and the purification device can effectively collect and purify the harmful gases generated during die-casting. The exhaust fan extracts the gas in the cooling tank and transports it to the gas tank through the circulating air duct, and then enters the purification tower. The purification filter plates adopt high-efficiency filtering materials, which can adsorb and filter the impurities and harmful substances in the harmful gases. For example, for pollutants such as metal dust and volatile organic compounds generated during die-casting, the purification filter plates can effectively intercept and remove them, enabling the purified gas to be discharged from the device, greatly reducing the concentration of pollutants in the working environment; The gas after purification treatment not only removes impurities and harmful substances but also effectively reduces the generation of odors, making the air in the workplace fresher, improving the working environment of the operators, and reducing health problems caused by inhaling harmful gases.

[0018] (4)The transmission device cleverly utilizes the flowing power generated by the exhaust fan to extract gas. By blowing the transmission wind wheel to rotate, it drives a series of transmission components to move, causing the negative pressure airbag to generate negative pressure, thereby extracting and conveying the water in the water storage tank to the atomizing nozzle. This design realizes the recycling of gas power, eliminates the need for additional power equipment to drive the water cycle, reduces the dependence on external energy sources, and lowers energy consumption. The circulation device recovers and stores the water used in the cooling process in the water storage tank, and then conveys it to the atomizing nozzle again through the transmission device for recycling. This way of recycling water resources greatly reduces water waste, meets the requirements of modern industrial development for energy conservation and environmental protection. At the same time, it reduces the production cost of enterprises and improves the resource utilization efficiency.

[0019] (5)The rotating device realizes the automatic switching of the mold between different processes, reduces the workload of manually handling the mold, and lowers the labor cost. At the same time, due to the improvement of production efficiency, more products can be produced per unit time, further spreading the labor cost. Brief Description of the Drawings

[0020] Figure 1 It is one of the structural schematic diagrams of a die-casting device for an electric motor housing proposed by the present invention; Figure 2 It is another structural schematic diagram of a die-casting device for an electric motor housing proposed by the present invention; Figure 3 It is a sectional structural schematic diagram of a die-casting device for an electric motor housing proposed by the present invention; Figure 4 It is a sectional plane structural schematic diagram of a die-casting device for an electric motor housing proposed by the present invention; Figure 5 It is a partial sectional side view structural schematic diagram of a die-casting device for an electric motor housing proposed by the present invention.

[0021] The names of the corresponding reference signs in the drawings are as follows: 1, support; 2, hydraulic device; 3, heating furnace; 4, rotating device; 5, circulation device; 6, cooling device; 7, exhaust fan; 8, transmission device; 9, purification device; 201, support plate; 202, positioning rod; 203, hydraulic press; 204, hydraulic rod; 205, hydraulic die; 206, limit plate; 207, positioning plate; 301, slide rail; 401, fixing plate; 402, rotating motor; 403, rotating plate; 404, placement die; 501, circulation tank; 502, partition plate; 503, gas tank; 504, water storage tank; 505, circulation plate; 506, circulation air duct; 507, ventilation box; 601, cooling tank; 602, atomizing nozzle; 801, transmission rod; 802, transmission wind wheel; 803, transmission plate; 804, eccentric rod; 805, connecting rod; 806, transmission shaft; 807, negative pressure air bag; 808, water suction pipe; 809, fixing rod; 810, circulation pipe; 901, purification tower; 902, purification filter plate. Detailed implementation manners

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0023] The specific implementation process is as follows: Embodiment 1: Please refer to Figures 1-5 , a technical solution provided by the present invention: a die-casting device for a motor housing, including a support 1, a hydraulic device 2 is fixedly arranged above the support 1, a heating furnace 3 is movably arranged below the hydraulic device 2, a rotating device 4 is adaptively arranged on one side of the hydraulic device 2, a circulation device 5 is adaptively arranged on one side of the rotating device 4, a cooling device 6 is fixedly arranged at one end of the circulation device 5, an exhaust fan 7 is arranged on one side of the cooling device 6, a transmission device 8 is fixedly arranged on the inner wall of the circulation device 5, and a purification device 9 is arranged above the circulation device 5; The hydraulic device 2 includes support plates 201 installed at both ends of the support 1. The support plates 201 are cut and welded from high-strength steel plates and are firmly connected to the support 1 through bolts. A positioning rod 202 is fixedly arranged inside the support plates 201 by welding. The surface of the positioning rod 202 has been precisely ground, with low surface roughness, playing an accurate positioning and guiding role to ensure the movement accuracy of the hydraulic die 205; On one side of the support plate 201, a hydraulic press 203 is fixedly installed by bolts. The output end of the hydraulic press 203 is connected to the hydraulic rod 204 through a flange. This connection method can ensure the stability of power transmission. One end of the hydraulic rod 204 is fixedly installed with a hydraulic mold 205 by bolts. By driving the hydraulic rod 204 with the hydraulic press 203, the hydraulic mold 205 can accurately perform die-casting operations on the heated die-casting material. On one side of the hydraulic mold 205, a limiting plate 206 is fixedly installed by welding. A through hole adapted to the positioning rod 202 is provided on the limiting plate 206, and it is movably installed on the surface of the positioning rod 202, further ensuring the stability and accuracy of the hydraulic mold 205 during movement. At the other end of the support plate 201, a positioning plate 207 is fixedly arranged by welding. The surface of the positioning plate 207 is flat and is used for placing and positioning the placement mold 404. A slide rail 301 is adaptively arranged below the heating furnace 3. The slide rail 301 is fixedly bolted below the support plate 201 of the hydraulic device 2. A slider matching the slide rail 301 is installed at the bottom of the heating furnace 3. Through the cooperation of the slider and the slide rail 301, the heating furnace 3 can be flexibly moved to a suitable position, improving the flexibility and efficiency of heating. The rotating device 4 includes a fixed plate 401 fixedly installed on one side of the support plate 201. The fixed plate 401 is connected to the support plate 201 by bolts to ensure the firmness of the connection. On one side of the fixed plate 401, a rotating motor 402 is fixedly installed by bolts. The output shaft of the rotating motor 402 is connected to the rotating plate 403 through a coupling, and the power of the motor can be stably transmitted to the rotating plate 403. Placing molds 404 are fixedly installed at both ends of the rotating plate 403 by bolts. The placing molds 404 are movably placed on the surface of the positioning plate 207. By driving the rotating plate 403 to rotate with the rotating motor 402, the placing molds 404 can be quickly switched between different process positions such as die-casting and cooling, improving the production efficiency. The circulation device 5 includes a circulation box 501. The circulation box 501 is welded by stainless steel plates and has good sealing performance and corrosion resistance. A partition plate 502 is fixedly arranged in the circulation box 501 by welding. The partition plate 502 divides the circulation box 501 into a gas box 503 and a water storage tank 504, which are respectively used for gas storage and circulation and water storage. On one side of the inner wall of the circulation box 501, a circulation plate 505 is obliquely arranged by welding. On one side of the circulation plate 505, a circulation air duct 506 is fixedly arranged by welding. The inner wall of the circulation air duct 506 is smooth, which can reduce the resistance of gas flow. The circulation box 501 forms a ventilation box 507 through the circulation plate 505, providing a channel for gas flow. The cooling device 6 includes a cooling tank 601 fixedly installed at one end of the circulation tank 501. The cooling tank 601 is connected to the circulation tank 501 by bolts. It is arc-shaped, and the radian is adapted to the rotation radian of the placement mold 404, which can ensure that the placement mold 404 is accurately positioned when rotating into the cooling tank 601; A number of atomizing nozzles 602 are evenly arranged in the cooling tank 601 through threaded connection. The spraying angles and ranges of the atomizing nozzles 602 are carefully designed, and can evenly spray water mist on the surface of the placement mold 404. The water mist ejected by these atomizing nozzles 602 quickly cools the placement mold 404; The transmission device 8 includes a transmission rod 801 movably clamped and installed on one side of the inner wall of the gas tank 503. The transmission rod 801 is connected to the inner wall of the gas tank 503 through a bearing and can rotate flexibly. A transmission wind wheel 802 is fixedly installed on the surface of one end of the transmission rod 801 through key connection. When the exhaust fan 7 extracts the gas in the cooling tank 601 and discharges it to the gas tank 503 through the circulation air duct 506, the gas flow will blow the transmission wind wheel 802 to rotate; A transmission plate 803 is fixedly installed on one side of the transmission rod 801 by welding. An eccentric rod 804 is fixedly installed on one side of the transmission plate 803 by welding. A connecting rod 805 is movably clamped on the surface of the eccentric rod 804 through a movable collar; A transmission shaft 806 is movably arranged below the connecting rod 805 through a movable joint. A negative pressure air bag 807 is fixedly installed below the transmission shaft 806 by bolts; A water suction pipe 808 is fixedly connected to the lower part of the negative pressure air bag 807 through threaded connection. A fixing rod 809 is arranged on the side of the water suction pipe 808 by welding. The fixing rod 809 is fixedly installed on the lower part of the inner wall of the water storage tank 504 by bolts to fix the position of the water suction pipe 808; A circulation pipe 810 is fixedly connected to the side of the water suction pipe 808 through a three-way joint. One end of the circulation pipe 810 is connected and communicated with the atomizing nozzle 602 through threaded connection. When the transmission wind wheel 802 rotates, it will drive the transmission rod 801, the transmission plate 803, the eccentric rod 804, the connecting rod 805 and the transmission shaft 806 to move, so that the negative pressure air bag 807 generates negative pressure, thereby conveying the water in the water storage tank 504 to the atomizing nozzle 602 through the water suction pipe 808 and the circulation pipe 810; The purification device 9 includes a purification tower 901 fixedly installed above the gas tank 503. The purification tower 901 is connected to the gas tank 503 by bolts. Its air inlet is connected and communicated with the gas tank 503. A number of purification filter plates 902 are evenly arranged in the purification tower 901 through card slots. These purification filter plates 902 are made of high-efficiency filtering materials and have functions such as adsorption and filtration, and can effectively remove impurities and harmful substances in the harmful gas, so that the purified gas is discharged, reducing the harm to the environment and operators; During use, the metal material to be die-cast is accurately placed on the surface of the placement mold 404. At this time, the placement mold 404 is located on the positioning plate 207, and the positioning plate 207 plays a role in positioning and supporting it, ensuring the accurate position of the placement mold 404 in subsequent operations; Start the heating furnace 3, and the electric heating wire inside the heating furnace 3 starts to work and generate heat. Through the cooperation of the slide rail 301 and the slider under the heating furnace 3, the operator moves the heating furnace 3 to a suitable position so that it is aligned with the placement mold 404 with the die-casting material to be placed; When the die-casting material reaches the appropriate temperature, start the hydraulic press 203. The hydraulic press 203 transmits the pressure to the hydraulic rod 204 through the hydraulic system, and the hydraulic rod 204 pushes the hydraulic mold 205 towards the placement mold 404; The limiting plate 206 on one side of the hydraulic mold 205 slides on the positioning rod 202, playing an accurate guiding and limiting role to ensure that the hydraulic mold 205 accurately closes the mold with the placement mold 404 along a predetermined path; After the mold is closed, the hydraulic press 203 continues to apply pressure, so that the molten die-casting material fills the mold cavity under high pressure, thereby forming into the shape of the required motor housing. During the die-casting process, the stable pressure provided by the hydraulic device 2 ensures the dimensional accuracy and surface quality of the housing; After die-casting is completed, stop the heating of the heating furnace 3 and start the rotating motor 402. The output shaft of the rotating motor 402 drives the rotating plate 403 to rotate through the coupling; The placement molds 404 at both ends of the rotating plate 403 rotate together with the rotating plate 403, rotating and moving the die-cast placement mold 404 and the die-casting material into the cooling tank 601. At the same time, the originally idle placement mold 404 in the cooling tank 601 is rotated to the surface of the positioning plate 207; At this time, the operator can place the new die-casting material on the surface of the rotated placement mold 404 to prepare for the next die-casting. This rotation switching method realizes the parallel operation of the die-casting and cooling processes, greatly improving the production efficiency; When the placement mold 404 rotates into the cooling tank 601, start the exhaust fan 7, and the exhaust fan 7 starts to extract the gas in the cooling tank 601, creating a negative pressure environment in the cooling tank 601; The extracted gas is discharged to the gas tank 503 through the circulating air duct 506. Since the outlet of the circulating air duct 506 faces the transmission wind wheel 802, the impact force generated by the gas flow blows the transmission wind wheel 802 to rotate; The rotation of the transmission wind wheel 802 drives the transmission rod 801 to rotate, and the transmission plate 803 on one side of the transmission rod 801 rotates accordingly. Through the transmission mechanism of the eccentric rod 804, the connecting rod 805 and the transmission shaft 806, the negative pressure airbag 807 generates periodic compression and expansion movements; When the negative pressure airbag 807 expands, the internal pressure decreases, generating negative pressure, and the water in the water storage tank 504 is pumped out through the pumping pipe 808, and the water is transported to the atomizing nozzle 602 through the circulation pipe 810. The atomizing nozzle 602 atomizes the water and evenly sprays it on the surface of the mold 404; The water mist vaporizes rapidly on the surface of the mold 404, absorbing a large amount of heat, thereby quickly reducing the temperature of the mold 404 and the die-casting material. At the same time, the exhaust fan 7 continuously extracts the hot air and water vapor generated during the cooling process, maintains the negative pressure environment in the cooling tank 601, and ensures the stability and continuity of the cooling effect. The gas extracted by the exhaust fan 7 contains harmful gases and dust generated during the die-casting process. After these gases enter the gas box 503 through the circulating wind tunnel 506, they rise and enter the purification tower 901; In the purification tower 901, the gas passes through a number of purification filter plates 902 in sequence. The purification filter plates 902 use highly efficient filtering materials and have functions such as adsorption and filtration. For example, the physical filtration of the purification filter plates 902 can intercept metal dust in the gas; the adsorbent on the purification filter plates 902 can adsorb harmful substances such as volatile organic compounds, thereby effectively removing impurities and harmful substances in the harmful gas. The purified gas processed by the purification filter plate 902 is discharged from the outlet of the purification tower 901, which reduces the harm to the working environment and operators and also meets the environmental protection requirements; Through the coordinated work of the above stages, the motor casing die-casting device realizes the whole process automation operation from heating of die-casting materials, die-casting molding, rapid cooling to harmful gas purification, improves production efficiency and product quality, and reduces pollution to the environment.

[0024] The above is only an embodiment of the present invention, and the common knowledge such as the known specific technical solutions or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the technical solution of the present invention, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A motor casing die-casting device, comprising a bracket (1), characterized in that: A hydraulic device (2) is fixedly provided above the bracket (1), a heating furnace (3) is movably provided below the hydraulic device (2), a rotating device (4) is adapted to be provided on one side of the hydraulic device (2), a circulating device (5) is adapted to be provided on one side of the rotating device (4), a cooling device (6) is fixedly provided on one end of the circulating device (5), an exhaust fan (7) is provided on one side of the cooling device (6), a transmission device (8) is fixedly provided on the inner wall of the circulating device (5), and a purification device (9) is provided above the circulating device (5); The hydraulic device (2) comprises a pair of support plates (201) mounted at both ends of the bracket (1); a positioning rod (202) is fixedly provided on the inner side of the support plate (201); a hydraulic press (203) is fixedly provided on one side of the support plate (201); a hydraulic rod (204) is fixedly provided on the output end of the hydraulic press (203); a hydraulic mold (205) is fixedly provided on one end of the hydraulic rod (204); a limiting plate (206) is fixedly provided on one side of the hydraulic mold (205); the limiting plate (206) is movably mounted on the surface of the positioning rod (202); and a positioning plate (207) is fixedly provided on the other end of the support plate (201).

2. The motor casing die-casting device according to claim 1, characterized in that: A slide rail (301) is adapted to be provided below the heating furnace (3).

3. The motor casing die-casting device according to claim 1, characterized in that: The rotating device (4) comprises a fixed plate (401) fixedly mounted on one side of the supporting plate (201); a rotating motor (402) is fixedly disposed on one side of the fixed plate (401); a rotating plate (403) is disposed at the output end of the rotating motor (402); placement moulds (404) are fixedly disposed at both ends of the rotating plate (403); and the placement moulds (404) are movably placed on the surface of the positioning plate (207).

4. The motor casing die-casting device according to claim 3, characterized in that: The circulation device (5) comprises a circulation box (501), a partition plate (502) is fixedly provided inside the circulation box (501), the circulation box (501) is divided into a gas box (503) and a water storage box (504) by the partition plate (502), a circulation plate (505) is obliquely provided on one side of the inner wall of the circulation box (501), a circulation wind tunnel (506) is fixedly provided on one side of the circulation plate (505), and the circulation box (501) is divided into a ventilation box (507) by the circulation plate (505).

5. The motor casing die-casting device according to claim 4, characterized in that: The cooling device (6) comprises a cooling groove (601) fixedly mounted on one end of the circulation box (501); the cooling groove (601) is arc-shaped and adapted to the rotation arc of the placement mold (404); and a plurality of atomizing nozzles (602) are evenly arranged in the cooling groove (601).

6. The motor casing die-casting device according to claim 5, characterized in that: The transmission device (8) comprises a transmission rod (801) movably embedded in a side of the inner wall of the gas box (503); a transmission wind wheel (802) is fixedly provided on the surface of one end of the transmission rod (801); a transmission plate (803) is fixedly provided on one side of the transmission rod (801); an eccentric rod (804) is fixedly provided on one side of the transmission plate (803); a connecting rod (805) is movably embedded in the surface of the eccentric rod (804); and a transmission wheel (802) is movably provided below the connecting rod (805). A shaft (806) is provided, a negative pressure air bag (807) is fixedly provided below the transmission shaft (806), a water pumping pipe (808) is fixedly provided below the negative pressure air bag (807), a fixing rod (809) is provided on the side of the water pumping pipe (808), the fixing rod (809) is fixedly installed below the inner wall of the water storage tank (504), a circulation pipe (810) is fixedly provided on the side of the water pumping pipe (808), and one end of the circulation pipe (810) is connected to and communicates with the atomizing nozzle (602).

7. The motor casing die-casting device according to claim 6, characterized in that: The purification device (9) comprises a purification tower (901) fixedly installed above the gas box (503), and a plurality of purification filter plates (902) are evenly arranged in the purification tower (901).

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