A surface balanced spraying device for gear machining

Abstract

The present invention relates to the technical field of gear processing, and specifically to a surface balanced spraying device for gear processing, comprising a base plate, a feeding mechanism that moves along its length direction is installed on the top of the base plate, the feeding mechanism can be a pulley or a rail car, a circular frame that covers part of the moving path of the feeding mechanism is fixedly connected to the top of the base plate, openings that are wider than the feeding mechanism are opened on both sides of the circular frame, door stop assemblies that cover the openings are slidably connected on both sides of the circular frame, a plurality of longitudinal jet assemblies that spray upward are installed on the inner wall of the circular frame, and a plurality of tangential jet assemblies are installed on the inner wall of the circular frame. The present invention solves the problem that the existing gear spraying equipment is difficult to close the spraying area under the condition of continuous feeding, and guides the paint that escapes into the surrounding environment to flow in a directional manner, thereby reducing the loss caused by the paint escaping into the environment, and reducing the damage to the health of workers caused by the paint escaped in the environment.

Description

Technical Field

[0001] The invention relates to the technical field of gear processing, in particular to a surface balanced spraying device for gear processing. Background Art

[0002] During the production process of gears, by spraying a wear-resistant high-strength resin coating on the gear teeth, the gears can have the desired high strength and high rigidity of metal gears, while also having the self-lubricating and low-noise properties of resin materials. In order to ensure the durability of the gears, the surface of the gears needs to be sprayed during the manufacturing process of the gears. After searching, a Chinese invention patent with application number CN202410686549.4 discloses a surface spraying device for electric vehicle gear processing, which can enable the gears to achieve multi-angle rotation during the spraying process. On the one hand, it avoids the occurrence of spraying dead angles, and on the other hand, it can keep the spray paint surface thickness of each part of the gear uniform, thereby improving the quality of the gear spraying product.

[0003] The gears in the above-mentioned device are exposed during spraying. In fact, in order to continuously load and spray the gears, the spraying area of ​​the gears is generally not closed, which will cause the sprayed paint to escape into the surrounding environment. Although the robotic arm used for spraying is wrapped with a layer of cloth or other materials to prevent the paint from falling on the robotic arm, the paint escaped in the surrounding environment will not only cause harm to the health of the workers, but also increase the waste of paint, which is not conducive to reducing the cost of gear spraying. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a surface balanced spraying device for gear processing, which solves the problem that the existing gear spraying equipment is difficult to close the spraying area under the condition of continuous loading, and guides the directional flow of the paint that escapes into the surrounding environment, thereby reducing the loss caused by the paint escaping into the environment, and reducing the damage to the health of workers caused by the paint escaped in the environment.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a surface balanced spraying device for gear processing, comprising a base plate, a feeding mechanism moving along the length direction of the base plate is installed on the top of the base plate, the feeding mechanism can be a pulley or a rail car, a circular frame covering part of the moving path of the feeding mechanism is fixedly connected to the top of the base plate, openings with a width exceeding the feeding mechanism are opened on both sides of the circular frame, door stop components for covering the openings are slidably connected to both sides of the circular frame, a plurality of longitudinal jet components for spraying upward are installed on the inner wall of the circular frame, a plurality of tangential jet components for laterally pushing the longitudinal airflow inside the circular frame are installed on the inner wall of the circular frame, a painting robot with one end of the nozzle movably extending to the inside of the circular frame is installed on the top of the base plate, a longitudinal groove corresponding to the painting robot is opened on one side of the circular frame, a dustproof cloth for blocking the longitudinal groove is provided on the outside of the painting robot, and the dustproof cloth is in a loose state;

[0006] The tangential jet assembly includes a circular box fixedly connected to the middle area of ​​the inner wall of the circular frame, a narrow wind area with a smaller width and a wide wind area with a larger width are provided inside the circular box, the narrow wind area and the wide wind area are alternately arranged and connected end to end, the junction between the narrow wind area and the wide wind area is an inclined surface, a transverse air inlet pipe with one end movably extending to the inside of the circular box is provided on the outside of the circular frame, and a transverse air outlet pipe along the tangent direction of the circular frame is connected to one side of the circular box located inside the circular frame.

[0007] Preferably, the bottom of the round box is provided with a metal block extending into the interior thereof, a heat conducting plate fixedly connected to the metal block is installed on the side of the inner wall of the round box away from the transverse air inlet pipe and the transverse air outlet pipe, and a heat dissipation fin is fixedly connected to the bottom of the metal block.

[0008] Preferably, the longitudinal jet assembly includes multiple horizontal plates installed on the inner wall of the circular frame, the top of the horizontal plate is fixedly connected to the horizontal frame, the longitudinal frame is slidably connected between the two sides of the inner wall of the horizontal frame, and an air supply assembly for transporting air into the longitudinal frame is installed on the outer side of the circular frame.

[0009] Preferably, the air supply assembly includes an external tube penetrating the circular frame, one side of the longitudinal frame is connected to a hose, one end of the hose movably extends to the inside of the external tube, and a sealing sleeve is installed between the hose and the external tube.

[0010] Preferably, the transverse plate is rotatably connected to the inner wall of the circular frame, and is slidably connected to the top of the bottom plate. The top of the transverse plate is provided with a plurality of bolts that movably penetrate the transverse plate.

[0011] Preferably, the top of the circular frame is closed, a scraper assembly is installed on the top of the circular frame, and a funnel for accommodating the paint scraped off by the scraper assembly is fixedly connected to the inner wall of the circular frame.

[0012] Preferably, the scraper assembly includes a rotating rod rotatably connected to the inner top of the circular frame, a scraper plate slidably connected to the inner top of the circular frame is fixedly connected to the outer side of the rotating rod, and a motor for driving the rotating rod to rotate is installed on the top of the circular frame.

[0013] Preferably, the bottom of the scraper plate is fixedly connected to a longitudinal rod, and the bottom of the longitudinal rod is fixedly connected to an inclined frame with one end extending to the top of the funnel.

[0014] Preferably, a cleaning port corresponding to the funnel is opened on the outer side of the circular frame, an arc plate for covering the cleaning port is slidably connected to the outer side of the circular frame, and a protrusion is fixedly connected to the side of the arc plate away from the circular frame.

[0015] Preferably, the door stop assembly comprises a slide plate slidably connected to the circular frame, a handle is installed on a side of the slide plate away from the circular frame, and door curtains are fixedly connected to the inner tops of the openings on both sides of the circular frame.

[0016] Compared with the prior art, the present invention provides a surface balanced spraying device for gear machining, which has the following beneficial effects:

[0017] 1. The longitudinal jet assembly and tangential jet assembly can drive the paint that escapes into the surrounding environment to move in a directional manner within a small range, reduce the range of paint that escapes into the surrounding environment when spraying paint on the gear, use the airflow to guide the paint that escapes into the environment to move in a directional manner, and close the spraying area under the condition of continuous feeding, thereby reducing the loss caused by the paint escaping into the environment, and reducing the damage to the health of workers caused by the paint escaping in the environment.

[0018] 2. The heat conducting sheet and heat dissipating fins can prolong the time that the heat in the air stays around the heat conducting sheet, so that the heat of the air inside the tangential jet assembly can be transferred to the area below the round box to a greater extent, and the heat can be gathered around the feeding mechanism and the gear in the lower half of the round frame, which is convenient for maintaining the temperature of the gear spraying area, meeting the gear's jetting needs when the temperature is low, and ensuring that the gear is always sprayed within a suitable temperature range.

[0019] 3. Through the provision of the horizontal plate, bolts and horizontal frame, the inner diameter of the vortex in the circular frame can be adjusted as required, so as to adapt to the conditions of spraying gears of different areas after the airflow is generated from the outside of the feeding mechanism of different areas and then guided to form a vortex.

[0020] 4. The scraper assembly can clean the paint that escapes into the surrounding environment and move it to the designated location, making it convenient to recycle the paint that escapes into the surrounding environment during the spraying process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a structural schematic diagram of the round frame and the painting robot of the present invention;

[0024] Figure 3 This is a schematic diagram of the structure of the round frame and the painting robot of the present invention after removing the door stopper;

[0025] Figure 4 It is a schematic diagram of the structure of the tangential jet injection assembly of the present invention;

[0026] Figure 5 It is a schematic diagram of the internal structure of the tangential jet injection assembly of the present invention;

[0027] Figure 6 is a cross-sectional view of the oblique jet injection assembly of the present invention;

[0028] Figure 7 It is a schematic diagram of the jet direction of the longitudinal jet assembly and the tangential jet assembly of the present invention;

[0029] Figure 8 It is a schematic diagram of the structure of the metal block, the heat conducting sheet and the heat dissipating fins of the present invention;

[0030] Fig. 9 It is a structural schematic diagram of the longitudinal jetting assembly of the present invention;

[0031] Fig.10 It is a schematic structural diagram of the connection between the scraper assembly and the circular frame of the present invention;

[0032] Fig.11 It is a schematic structural diagram of the scraper assembly of the present invention.

[0033] In the figure: 1. bottom plate; 2. feeding mechanism; 3. round frame; 4. door stop assembly; 41. slide plate; 42. door curtain; 5. longitudinal jet assembly; 51. horizontal plate; 52. horizontal frame; 53. longitudinal frame; 54. air supply assembly; 541. external pipe; 542. hose; 543. sealing sleeve; 6. tangential jet assembly; 61. round box; 62. narrow wind zone; 63. wide wind zone; 64. horizontal air inlet pipe; 65. horizontal air outlet pipe; 7. painting robot; 8. metal block; 9. heat conductive sheet; 10. heat dissipation fin; 11. bolt; 12. scraper assembly; 121. rotating rod; 122. scraper plate; 123. motor; 13. funnel; 14. longitudinal rod; 15. tilting frame; 16. arc plate. DETAILED DESCRIPTION

[0034] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0035] Embodiment 1

[0036] In order to be able to directional guide the paint that escapes into the surrounding environment during the spraying process, control the escaped paint within a relatively small range, thereby reducing the possibility of harm to the health of workers after inhalation, and to facilitate the recovery of the paint that escapes into the surrounding environment, Figure 1-Figure 7 As one embodiment of the present invention, a surface balanced spraying device for gear machining is proposed, comprising a base plate 1, a feeding mechanism 2 moving along the length direction of the base plate 1 is installed on the top of the base plate 1, a circular frame 3 covering part of the moving path of the feeding mechanism 2 is fixedly connected to the top of the base plate 1, openings with a width exceeding that of the feeding mechanism 2 are opened on both sides of the circular frame 3, door stop components 4 for covering the openings are slidably connected on both sides of the circular frame 3, a plurality of longitudinal jet components 5 for jetting upward are installed on the inner wall of the circular frame 3, and a plurality of tangential jet components 5 for laterally pushing the longitudinal airflow inside the circular frame 3 are installed on the inner wall of the circular frame 3. Air component 6, a spray painting robot 7 with one end of the nozzle movably extending to the inside of the circular frame 3 is installed on the top of the bottom plate 1, a longitudinal groove corresponding to the spray painting robot 7 is opened on one side of the circular frame 3, and a dustproof cloth for blocking the longitudinal groove is provided on the outside of the spray painting robot 7, and the dustproof cloth is in a loose state. When in use, the gear is transported along the length direction of the bottom plate 1 by the feeding mechanism 2. When the feeding mechanism 2 transports the gear to the inside of the circular frame 3, it stops moving for a period of time, so that the spray painting robot 7 can spray paint on the gear in the circular frame 3. The process of the gear entering the circular frame 3 and going out of the circular frame 3 is as follows:

[0037] According to the projection area of ​​the feeding mechanism 2 and the gear above it on the bottom plate 1, the longitudinal jet assembly 5 is moved to the outer circle of the projection area, so that the airflow ejected upward by the longitudinal jet assembly 5 flows upward on the outer side of the gear, and the longitudinal jet assembly 5 and the tangential jet assembly 6 are controlled to start jetting. Before the gear is transported into the circular frame 3 by the feeding mechanism 2, the staff pushes the door stop assembly 4 on the circular frame 3 to open, so that the feeding mechanism 2 and the gear can smoothly enter the circular frame 3. After the feeding mechanism 2 drives the gear to enter the circular frame 3, it stops moving for a period of time, and the staff pushes the door stop assembly 4 to close the openings on both sides of the circular frame 3, and then The rear painting robot 7 sprays paint toward the gears on the feeding mechanism 2. The position where the painting robot sprays paint on the gear surface on the feeding mechanism 2 is on the inner circle of the longitudinal jet component 5. The upward airflow ejected by the longitudinal jet component 5 produces an air wall effect, blocking the paint sprayed toward the gears by the painting robot 7 from diffusing outward. After the airflow ejected by the longitudinal jet component 5 is pushed horizontally again by the airflow ejected by the tangential jet component 6, it will have a tendency to rotate around the circular frame 3. The tangential jet components 6 at multiple positions inside the circular frame 3 continue to push the upward flowing airflow to rotate, so that the airflow in the circular frame 3 produces a spiral rising effect.

[0038] In order to enhance the above-mentioned effect, the temperature of the air ejected from the longitudinal jet assembly 5 can be controlled to be slightly higher than the room temperature, so that the longitudinal jet assembly 5 not only rises under the impetus of the flowing air, but also forms an updraft under the temperature difference at different heights, so that a vortex similar to a tornado can be simulated. When the gear spraying on the feeding mechanism 2 is completed, the staff opens the door stop assembly 4, and then the feeding mechanism 2 drives the gear to move from the opening of the circular frame 3 to the outside of the circular frame 3 to complete a gear spraying process, and then takes away the sprayed gear, and puts the subsequent gear to be sprayed back on the feeding mechanism 2, repeats the above process, and continuously completes the gear spraying process, which can drive the paint dissipated into the surrounding environment to move in a directional manner within a small range, reduce the range of paint dissipated into the surrounding environment when spraying paint on the gear, use airflow to guide the paint dissipated into the environment to move in a directional manner, and close the spraying area under continuous feeding, thereby reducing the loss caused by the paint dissipating into the environment, and reducing the damage to the health of the staff caused by the paint dissipated in the environment.

[0039] In order to improve the effect of the spiral flow of the airflow in the circular frame 3, refer to Figure 4-Figure 6The tangential jet assembly 6 includes a round box 61 fixedly connected to the middle area of ​​the inner wall of the round frame 3. The inside of the round box 61 is provided with a narrow wind area 62 with a smaller width and a wide wind area 63 with a larger width. The narrow wind area 62 and the wide wind area 63 are alternately arranged and connected end to end. The connection between the narrow wind area 62 and the wide wind area 63 is an inclined surface. The outside of the round frame 3 is provided with a transverse air inlet pipe 64 with one end movably extending to the inside of the round box 61. One side of the round box 61 located inside the round frame 3 is connected with a transverse air outlet pipe 65 along the tangent direction of the round frame 3. When in use, the longitudinal jet assembly 5 sprays airflow directly upward on the outside of the spraying area. At the same time, The transverse air inlet pipe 64 is connected to the external gas pipeline to transport air into the round box 61. The air flows along the annular channel in the round box 61 for a distance and then is discharged from the transverse air outlet pipe 65, pushing the air flow in the horizontal direction with a rotation angle, so that the airflow originally ejected upward by the longitudinal jet assembly 5 is pushed to rotate in the tangential direction, forming a spiral rising vortex, which prevents the paint dissipated into the surrounding environment from continuing to diffuse outward, and drives the paint dissipated into the surrounding environment to move in a directional manner, which not only controls the diffusion range of the paint dissipated into the surrounding environment, but also facilitates the recovery of the dissipated paint.

[0040] In order to achieve a closed environment when spraying gears, refer to Figure 1 and Figure 2 The door stop assembly 4 includes a slide plate 41 slidably connected to the round frame 3, and a handle is installed on the side of the slide plate 41 away from the round frame 3. The inner top of the opening on both sides of the round frame 3 is fixedly connected with a door curtain 42. When in use, the staff pushes the slide plate 41 away from the opening of the round frame 3, and then pushes the door curtain 42 from the bottom to raise the opening of the round frame 3, so that the opening of the round frame 3 is in an open state. At this time, the feeding mechanism 2 can drive the gear to enter the inside of the round frame 3 from the notch of the round frame 3, and then the staff pushes the slide plate 41 to move and cover a part of the opening, release the door curtain 42, and after the door curtain 42 naturally falls, it cooperates with the slide plate 41 to block the opening of the round frame 3, so that the round frame 3 is closed, preventing the paint sprayed by the gear from escaping to a larger range.

[0041] Embodiment 2

[0042] When spraying paint on the gear surface, the ambient temperature will affect the painting effect. When the ambient temperature is low, in order to maintain the appropriate temperature of the spraying area, refer to Figure 1-Figure 8On the basis of the first embodiment, the bottom of the round box 61 is provided with a metal block 8 extending into the inside thereof, and a heat conducting sheet 9 fixedly connected to the metal block 8 is installed on the side of the inner wall of the round box 61 away from the transverse air inlet pipe 64 and the transverse air outlet pipe 65, and a heat dissipating fin 10 is fixedly connected to the bottom of the metal block 8. When in use, the temperature of the air sprayed out by the longitudinal jet assembly 5 is controlled to be 15-30°C, which is the best temperature range for spraying paint. The temperature of the airflow sprayed upward from the bottom of the round frame 3 by the longitudinal jet assembly 5 will gradually decrease during the gradual increase, so that the temperature around the gear above the feeding mechanism 2 is within a suitable range, while the temperature at a higher place is relatively lower. At the same time, the air introduced into the transverse air inlet pipe 64 is also maintained at 15-30°C. The air in the transverse air inlet pipe 64 enters the inside of the round box 61 and flows along the annular channel. The specific flow process is as follows:

[0043] First, the hot air in the transverse air inlet duct 64 enters one of the wide wind areas 63, and then moves from the wide wind area 63 to the narrow wind area 62. As the width of the passage becomes narrower, part of the airflow is accelerated to pass through the narrow wind area 62, while the other part of the airflow is blocked by the inclined surface at the junction of the wide wind area 63 and the narrow wind area 62 and flows in the opposite direction. When the air flows from the narrow wind area 62 to the wide wind area 63, the air flow speed is slowed down due to the widening of the passage, so that the air stays in the wide wind area for a longer time, and the heat in the air is fully absorbed by the wide wind area. The heat is then transferred to the metal block 8 through the heat dissipation fins 10 to the bottom of the round box 61, which can prolong the time that the heat in the air stays around the heat conductive sheet 9, so that the heat of the air inside the tangential jet assembly 6 is transferred to the area below the round box 61 to a greater extent, and the heat is gathered around the feeding mechanism 2 and the gear in the lower half of the circular frame 3, which is convenient for maintaining the temperature of the gear spraying area, meeting the gear's jetting needs when the temperature is low, and ensuring that the gear is always sprayed within a suitable temperature range.

[0044] Embodiment 3

[0045] To create a vortex on the outer ring of the gear in the painted area, refer to Figure 1-Figure 9On the basis of the first embodiment, the longitudinal jet assembly 5 includes a plurality of transverse plates 51 installed on the inner wall of the circular frame 3, the top of the transverse plate 51 is fixedly connected to the transverse frame 52, and the longitudinal frame 53 is slidably connected between the inner walls of the transverse frame 52. An air supply assembly 54 for conveying air into the longitudinal frame 53 is installed on the outer side of the circular frame 3. The air supply assembly 54 includes an external pipe 541 that passes through the circular frame 3, and a hose 542 is connected to one side of the longitudinal frame 53. One end of the hose 542 movably extends to the inside of the external pipe 541, and a hose 542 is arranged between the hose 542 and the external pipe 541. Equipped with a sealing sleeve 543, when in use, the external tube 541 is connected to the external gas pipeline to transport air into the external tube 541. The sealing sleeve 543 ensures the sealing degree of the connection between the external tube 541 and the hose 542. The air in the external tube 541 is transported to the longitudinal frame 53 after passing through the hose 542, and then sprayed upward to form an upward airflow, which is then pushed in the horizontal direction by the tangential jet assembly 6 to form a spiral, forming a spiral upward vortex, which drives the paint dissipated into the surrounding environment to move in a directional manner, and prevents the dissipated paint from continuing to diffuse outward.

[0046] In order to facilitate the adjustment of the upward jet position, it is suitable for the feeding mechanism 2 of different areas to jet upward from the outside, refer to Fig. 9 The horizontal plate 51 is rotatably connected to the inner wall of the circular frame 3, and the horizontal plate 51 is slidably connected to the top of the bottom plate 1. A plurality of bolts 11 that movably penetrate the horizontal plate 51 are provided on the top of the horizontal plate 51. When the area of ​​the feeding mechanism 2 is large, the horizontal plate 51 is rotated, and then the longitudinal frame 53 is moved along the length direction of the horizontal frame 52 until the longitudinal frame 53 is located outside the projection of the feeding mechanism 2 on the horizontal plane, and then the bolts 11 are rotated to fix the horizontal plate 51 and the horizontal frame 52 to the bottom plate 1. The inner diameter of the vortex in the circular frame 3 can be adjusted as needed to adapt to the airflow generated from the outside of the feeding mechanism 2 of different areas and then guide the vortex to form, and to adapt to the conditions of spraying gears of different areas.

[0047] Embodiment 4

[0048] In order to achieve the purpose of centralized recovery of paint that escapes into the surrounding environment, refer to Figure 1-Figure 11On the basis of the first embodiment, the top of the circular frame 3 is closed, a scraper assembly 12 is installed on the top of the circular frame 3, a funnel 13 for accommodating the paint scraped by the scraper assembly 12 is fixedly connected to the inner wall of the circular frame 3, the scraper assembly 12 includes a rotating rod 121 rotatably connected to the inner top of the circular frame 3, a scraper plate 122 slidably connected to the inner top of the circular frame 3 is fixedly connected to the outer side of the rotating rod 121, and a motor 123 for driving the rotating rod 121 to rotate is installed on the top of the circular frame 3. When in use, the paint spraying robot 7 sprays on the gear on the upper feeding mechanism 2 Part of the paint escapes into the surrounding air. This part of the paint is driven by the longitudinal jet assembly 5 and the tangential jet assembly 6 to move upward in a spiral, and is finally blocked by the top of the circular frame 3 and attached to the inner top of the circular frame 3. The motor 123 drives the scraper plate 122 to rotate, and scrapes away the paint attached to the inner top of the circular frame 3. This part of the paint falls onto the funnel 13, and then slides along the funnel 13 to the side close to the inner wall of the circular frame 3, which can clean the paint that escapes into the surrounding environment and move it to a designated position, making it convenient to recover the paint that escapes into the surrounding environment during the spraying process.

[0049] To remove the recycled paint, refer to Fig.11 The bottom of the scraper plate 122 is fixedly connected with a longitudinal rod 14, and the bottom of the longitudinal rod 14 is fixedly connected with an inclined frame 15 with one end extending to the top of the funnel 13. A cleaning port corresponding to the funnel 13 is opened on the outside of the circular frame 3, and an arc-shaped plate 16 for covering the cleaning port is slidably connected to the outside of the circular frame 3. A protrusion is fixedly connected to the side of the arc-shaped plate 16 away from the circular frame 3. When in use, the scraper assembly 12 scrapes away the paint attached to the top of the inner side of the circular frame 3, and this part of the paint falls into the inclined frame 15 under the scraper plate 122, and then slides along the inclined frame 15 to the funnel 13. When it is necessary to take away the recycled paint, the staff moves the arc-shaped plate 16 upward, and then takes away the paint on the funnel 13 from the cleaning port of the circular frame 3, which can guide the recycled paint to move to the designated position, making it convenient to take away the recycled paint.

[0050] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A surface balanced spraying device for gear machining, comprising a base plate (1), a feeding mechanism (2) movable along the length direction of the base plate (1) being mounted on the top thereof, characterized in that: A circular frame (3) covering part of the moving path of the feeding mechanism (2) is fixedly connected to the top of the bottom plate (1); openings having a width exceeding that of the feeding mechanism (2) are provided on both sides of the circular frame (3); door stop assemblies (4) for covering the openings are slidably connected to both sides of the circular frame (3); a plurality of longitudinal jet assemblies (5) for jetting upward are installed on the inner wall of the circular frame (3); a plurality of tangential jet assemblies (6) for laterally pushing the longitudinal airflow inside the circular frame (3) are installed on the inner wall of the circular frame (3); and a painting robot (7) having one end of a nozzle movably extending into the interior of the circular frame (3) is installed on the top of the bottom plate (1); The tangential jet assembly (6) comprises a round box (61) fixedly connected to the middle area of ​​the inner wall of the round frame (3); a narrow wind area (62) and a wide wind area (63) are provided inside the round box (61); the narrow wind area (62) and the wide wind area (63) are arranged alternately and connected end to end; the connection between the narrow wind area (62) and the wide wind area (63) is an inclined surface; a transverse air inlet pipe (64) having one end movably extending into the interior of the round box (61) is provided on the outside of the round frame (3); and a transverse air outlet pipe (65) along the tangent direction of the round frame (3) is connected to one side of the round box (61) located inside the round frame (3); The bottom of the round box (61) is provided with a metal block (8) extending into the interior thereof, a heat conducting sheet (9) fixedly connected to the metal block (8) is installed on a side of the inner wall of the round box (61) away from the transverse air inlet pipe (64) and the transverse air outlet pipe (65), and a heat dissipation fin (10) is fixedly connected to the bottom of the metal block (8).

2. The spraying device according to claim 1, characterized in that: The longitudinal jet assembly (5) comprises a plurality of transverse plates (51) mounted on the inner wall of the circular frame (3); a transverse frame (52) is fixedly connected to the top of the transverse plates (51); a longitudinal frame (53) is slidably connected between the inner walls of the transverse frame (52); and an air supply assembly (54) for supplying air into the longitudinal frame (53) is mounted on the outer side of the circular frame (3).

3. The spraying device according to claim 2, characterized in that: The air supply assembly (54) comprises an external pipe (541) penetrating the circular frame (3); one side of the longitudinal frame (53) is connected to a hose (542); one end of the hose (542) movably extends into the interior of the external pipe (541); and a sealing sleeve (543) is installed between the hose (542) and the external pipe (541).

4. The spraying device according to claim 2, characterized in that: The transverse plate (51) is rotatably connected to the inner wall of the circular frame (3), and the transverse plate (51) is slidably connected to the top of the bottom plate (1). The top of the transverse plate (51) is provided with a plurality of bolts (11) that movably penetrate the transverse plate (51).

5. The spraying device according to claim 1, characterized in that: The top of the circular frame (3) is closed, a scraper assembly (12) is installed on the top of the circular frame (3), and a funnel (13) for accommodating paint scraped off by the scraper assembly (12) is fixedly connected to the inner wall of the circular frame (3).

6. The spraying device according to claim 5, characterized in that: The scraper assembly (12) comprises a rotating rod (121) rotatably connected to the inner top of the circular frame (3); a scraper plate (122) is fixedly connected to the outer side of the rotating rod (121) and is slidably connected to the inner top of the circular frame (3); and a motor (123) is mounted on the top of the circular frame (3) for driving the rotating rod (121) to rotate.

7. The spraying device according to claim 6, characterized in that: The bottom of the scraper plate (122) is fixedly connected to a longitudinal rod (14), and the bottom of the longitudinal rod (14) is fixedly connected to an inclined frame (15) having one end extending to the top of the funnel (13).

8. The spraying device according to claim 5, characterized in that: The outer side of the circular frame (3) is provided with a cleaning opening corresponding to the funnel (13); the outer side of the circular frame (3) is slidably connected to an arc-shaped plate (16) for covering the cleaning opening; a protrusion is fixedly connected to the side of the arc-shaped plate (16) away from the circular frame (3).

9. The spraying device according to claim 1, characterized in that: The door stop assembly (4) comprises a slide plate (41) slidably connected to the round frame (3); a handle is installed on a side of the slide plate (41) away from the round frame (3); and door curtains (42) are fixedly connected to the inner tops of the openings on both sides of the round frame (3).

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