Split spray processing turntable

Abstract

The utility model discloses a split type spraying processing rotary device, including first support, first control box, rotary drive mechanism, first positioning mechanism, second support, second control box, horizontal drive mechanism and second positioning mechanism, a plurality of first positioning mechanism are driven to rotate by rotary drive mechanism through the setting, a plurality of second positioning mechanism rotatablely set up on second support, a plurality of second positioning mechanism are driven to move back and forth horizontally by corresponding horizontal drive mechanism respectively, and first positioning mechanism and second positioning mechanism are three -jaw chuck, and second positioning mechanism is correspondingly set with first positioning mechanism and is clamped and positioned to work piece in cooperation, and the rotary drive mechanism drives first positioning mechanism, work piece and second positioning mechanism to rotate in this split type spraying processing rotary device, can be to whole work piece with spraying device in one direction and carry out spraying, and production efficiency is promoted, and the distance of spraying device and tubular work piece curved surface is kept consistent when spraying, and work piece spraying is more uniform.

Description

Technical Field

[0001] This utility model relates to the field of rotary spraying devices, and in particular to a split-type rotary spraying device. Background Technology

[0002] With the continuous development of society and the economy, more and more mechanical equipment is being manufactured and widely used in agriculture, industry, and service industries. Mechanical equipment comes in a wide variety of types, and has undergone further innovation to meet different needs, playing an indispensable role in people's work and life; mechanical equipment is ubiquitous.

[0003] The internal structure of mechanical equipment is becoming increasingly complex, and its functions are becoming more and more diverse, and it is constantly being improved. Mechanical equipment generally includes drive devices, speed change devices, transmission devices, working devices, braking devices, protective devices, lubrication systems, cooling systems, etc., and different devices play different roles in mechanical equipment.

[0004] Spray coating is a metal surface processing method that uses a high-speed airflow to propel molten coating material onto the surface of a workpiece, forming a coating layer. In existing technologies, when spray coating tubular workpieces, the workpiece is typically mounted and fixed on a positioning device. Multiple positioning devices are arranged on a conveyor belt, and the spraying device sprays while the workpiece is being transported. The spraying device needs to spray one side of the workpiece first, then the other side, and this process requires multiple repetitions, resulting in low production efficiency. Furthermore, due to inconsistent distances between the spraying device and the curved surface of the workpiece, the coating layer can easily become too thick or too thin, leading to uneven coating thickness, uneven paint distribution on the workpiece surface, and problems such as color spots or runs. This results in a high defect rate, causing production inconvenience and producing poor-quality products that fail to meet current requirements. Therefore, it is necessary to research a new technical solution to improve upon these problems. Utility Model Content

[0005] In view of the above, this utility model addresses the shortcomings of existing technologies by providing a split-type rotary spraying device. This device effectively solves the problems of existing technologies where, when spraying tubular workpieces, the workpiece is typically mounted and fixed on a positioning device. Multiple positioning devices are arranged on a conveyor belt, which transports the workpiece while the spraying device sprays simultaneously. This process requires spraying one side of the workpiece first, then the other side, and involves multiple repeated spraying operations, resulting in low production efficiency. Furthermore, the inconsistent distance between the spraying device and the curved surface of the workpiece during spraying easily leads to uneven coating thickness, uneven paint distribution on the workpiece surface, and the appearance of color spots or runs, resulting in a high defect rate, inconvenience in production, and poor product quality.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A split-type rotary spraying device includes a first support, a first control box, a rotary drive mechanism, a first positioning mechanism, a second support, a second control box, a transverse drive mechanism, and a second positioning mechanism. The first control box is mounted on the first support. The rotary drive mechanism is mounted on the first support and electrically connected to the first control box. Multiple first positioning mechanisms are rotatably mounted on the first support and driven by the rotary drive mechanism. These multiple first positioning mechanisms are arranged side-by-side with intervals. Each first positioning mechanism is a three-jaw chuck used to clamp and position one end of a workpiece. The second support and the second control box are connected to the first control box. A bracket is symmetrically arranged on the left and right sides; the second control box is mounted on the second bracket; there are multiple transverse drive mechanisms, which are arranged side by side at intervals on the second bracket and electrically connected to the second control box; there are multiple second positioning mechanisms, which are rotatably mounted on the second bracket. Each of the multiple second positioning mechanisms is mounted on a corresponding transverse drive mechanism and is driven by the corresponding transverse drive mechanism to move back and forth laterally. The second positioning mechanism is a three-jaw chuck used to clamp and position the other end of the workpiece. The second positioning mechanism is arranged correspondingly to the first positioning mechanism and cooperates to clamp and position the workpiece.

[0008] As a preferred embodiment, the rotary drive mechanism includes a motor, multiple drive shafts, a first synchronous belt, and multiple second synchronous belts. The motor is mounted on a first bracket and electrically connected to a first control box. The multiple drive shafts are rotatably mounted on the first bracket. The multiple first positioning mechanisms are respectively mounted on the corresponding drive shafts and driven to rotate by the corresponding drive shafts. The first synchronous belt is located between the output shaft of the motor and a drive shaft, and each second synchronous belt is located between two adjacent drive shafts.

[0009] As a preferred embodiment, the first and second synchronous belts are arc-tooth synchronous belts. The output shaft of the motor is equipped with a first arc-tooth pulley, one drive shaft is equipped with three second arc-tooth pulleys, and another drive shaft is equipped with two second arc-tooth pulleys. The first synchronous belt is disposed on the first arc-tooth pulley and the corresponding second arc-tooth pulley. Each second synchronous belt is disposed on the corresponding two second arc-tooth pulleys and cooperates with the corresponding two second arc-tooth pulleys for synchronous transmission. The cooperative arrangement of the arc-tooth synchronous belt and the arc-tooth pulley has advantages such as high transmission accuracy, low noise, large torque, and long service life.

[0010] As a preferred embodiment, the first bracket includes multiple fixed seats arranged side by side at intervals. Each fixed seat is provided with a first through hole and further provided with multiple first bearings. The multiple first bearings are respectively disposed on the corresponding drive shaft and located in the corresponding first through hole. The arrangement of the first bearings helps to reduce friction, ensure the smoothness and precision of mechanical operation, and make the rotation smoother.

[0011] As a preferred embodiment, the lateral drive mechanism includes a cylinder, a guide rail, and a drive block. The cylinder is mounted on a second bracket and electrically connected to a second control box. The guide rail is laterally mounted on the second bracket. The drive block is located at the output end of the cylinder and is driven by the cylinder to move laterally back and forth along the guide rail. The second positioning mechanism is mounted on the drive block and moves laterally back and forth with the drive block.

[0012] As a preferred embodiment, the drive block is provided with a second through hole, and a second bearing is further provided therein. The second bearing is provided in the second through hole, and the second positioning mechanism is provided on the second bearing. The provision of the second bearing helps to reduce friction, ensure the smoothness and accuracy of mechanical operation, and make the rotation smoother.

[0013] As a preferred embodiment, the first positioning mechanism has a first cooling hole that communicates with the outside, and the second positioning mechanism has a second cooling hole and a cooling air inlet, which is located on the second positioning mechanism and communicates with the second cooling hole.

[0014] As a preferred embodiment, a third support and multiple rotating wheels are further provided. The third support is positioned between the first and second supports, and the multiple rotating wheels are rotatably mounted on the third support. There are an even number of rotating wheels, with each pair of rotating wheels forming a group. A placement position for placing a workpiece is formed between each pair of rotating wheels. Each group of rotating wheels is correspondingly arranged with the first and second positioning mechanisms. Multiple groups of rotating wheels are arranged side by side at intervals. The third support can provide auxiliary support for the workpiece, enabling the processing of workpieces that are longer and heavier, thus meeting different needs.

[0015] As a preferred embodiment, the rotating wheel is fixed to the third bracket by bolts, which has a simple structure and good stability.

[0016] As a preferred embodiment, the plurality of first positioning mechanisms are arranged side by side at intervals on the first support at a lateral angle, and correspondingly, the plurality of second positioning mechanisms are arranged side by side at intervals on the second support at a lateral angle, and the plurality of rotating wheels are arranged side by side at intervals on the third support at a lateral angle.

[0017] Compared with the prior art, this utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solution:

[0018] By mounting a rotary drive mechanism on a first bracket and electrically connecting it to a first control box, multiple first positioning mechanisms are rotatably mounted on the first bracket and driven to rotate by the rotary drive mechanism. These multiple first positioning mechanisms are arranged side-by-side with intervals. Each first positioning mechanism is a three-jaw chuck used to clamp one end of the workpiece. A second bracket is symmetrically arranged to the left and right of the first bracket. Multiple transverse drive mechanisms are arranged side-by-side with intervals on the second bracket and electrically connected to a second control box. Multiple second positioning mechanisms are rotatably mounted on the second bracket. Each second positioning mechanism is mounted on a corresponding transverse drive mechanism and driven to move laterally back and forth by the corresponding transverse drive mechanism. Each second positioning mechanism is a three-jaw chuck used to clamp the other end of the workpiece. These second positioning mechanisms are arranged correspondingly to the first positioning mechanisms. This split-type rotary spraying device effectively clamps and positions the workpiece, preventing it from shifting during processing. The rotary drive mechanism rotates the first positioning mechanism, the workpiece, and the second positioning mechanism, allowing the spraying device to spray the entire workpiece in one direction, significantly improving production efficiency. Furthermore, the distance between the spraying device and the curved surface of the tubular workpiece remains consistent during spraying, resulting in more uniform spraying, consistent coating thickness, and guaranteed spraying quality. This prevents excessively thick or thin coatings, color spots, and runs, greatly reducing the defect rate, facilitating production, and improving the quality of sprayed products. The distance between the first and second supports can be adjusted according to the length of different workpieces, making operation simple and meeting various needs.

[0019] To more clearly illustrate the structural features and effects of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of a preferred embodiment of the present utility model;

[0021] Figure 2 This is a three-dimensional structural schematic diagram of another preferred embodiment of the present utility model;

[0022] Figure 3 This is a cross-sectional view of a preferred embodiment of the present invention;

[0023] Figure 4 yes Figure 3 Enlarged view of position A in the middle;

[0024] Figure 5 yes Figure 3 Enlarged view of position B in the middle;

[0025] Figure 6 This is a three-dimensional structural diagram of the third support in a preferred embodiment of the present invention.

[0026] Explanation of reference numerals in the attached diagram:

[0027] 10. First bracket 11. Fixing base

[0028] 111, First through hole 20, Rotary drive mechanism

[0029] 21. Motor 211. First circular arc toothed pulley

[0030] 22. Drive shaft 221. Second circular arc toothed pulley

[0031] 222, Third cooling hole; 23, First synchronous belt

[0032] 24. Second synchronous belt; 30. First positioning mechanism

[0033] 31. First cooling hole; 40. Second bracket

[0034] 50. Lateral drive mechanism; 51. Cylinder

[0035] 52. Guide rail 53. Drive block

[0036] 531, Second through hole 60, Second positioning mechanism

[0037] 61. Second cooling hole; 62. Cooling air inlet

[0038] 70. Workpiece; 71. Cavity

[0039] 81. First bearing 82. Second bearing

[0040] 91. Third support; 92. Rotating wheel

[0041] 921. Placement position. Detailed Implementation

[0042] Please refer to Figures 1 to 6As shown, it illustrates the specific structure of a preferred embodiment of the present invention, including a first bracket 10, a first control box (not shown), a rotary drive mechanism 20, a first positioning mechanism 30, a second bracket 40, a second control box (not shown), a transverse drive mechanism 50, and a second positioning mechanism 60.

[0043] The first control box is mounted on the first bracket 10. In this embodiment, the first bracket 10 includes a plurality of fixed seats 11, which are arranged side by side at intervals, and each fixed seat 11 is provided with a first through hole 111.

[0044] The rotary drive mechanism 20 is mounted on the first bracket 10 and electrically connected to the first control box. In this embodiment, the rotary drive mechanism 20 includes a motor 21, multiple drive shafts 22, a first synchronous belt 23, and multiple second synchronous belts 24. The motor 21 is mounted on the first bracket 10 and electrically connected to the first control box. The multiple drive shafts 22 are rotatably mounted on the first bracket 10. The multiple first positioning mechanisms 30 are respectively mounted on the corresponding drive shafts 22 and driven to rotate by the corresponding drive shafts 22. The first synchronous belt 23 is located between the output shaft of the motor 21 and a drive shaft 22. Each second synchronous belt 24 is located between two adjacent drive shafts 22. Specifically... The first synchronous belt 23 and the second synchronous belt 24 are arc-tooth synchronous belts. The output shaft of the motor 21 is equipped with a first arc-tooth pulley 211, and three second arc-tooth pulleys 221 are equipped on one drive shaft 22. Two second arc-tooth pulleys 221 are equipped on another drive shaft 22. The first synchronous belt 23 is set on the first arc-tooth pulley 211 and the corresponding second arc-tooth pulley 221. Each second synchronous belt 24 is set on the corresponding two second arc-tooth pulleys 221 and cooperates with the corresponding two second arc-tooth pulleys 221 for synchronous transmission. The cooperation between the arc-tooth synchronous belt and the arc-tooth pulley has advantages such as high transmission accuracy, low noise, large torque, and long service life.

[0045] A plurality of first bearings 81 are further provided, which are respectively disposed on the corresponding drive shaft 22 and located in the corresponding first through hole 111. The arrangement of the first bearings 81 helps to reduce friction, ensure the smoothness and accuracy of mechanical operation, and make the rotation smoother; a third cooling hole 222 is provided in the drive shaft 22.

[0046] There are multiple first positioning mechanisms 30, which are rotatably mounted on the first support 10 and driven to rotate by the rotary drive mechanism 20. These multiple first positioning mechanisms 30 are arranged side-by-side with intervals. Each first positioning mechanism 30 is a three-jaw chuck used to clamp and position one end of a workpiece 70. The three-jaw chuck includes a chuck body and three jaws, which are disposed on the chuck body. The chuck body has a square hole. By inserting a wrench into the square hole and rotating it, the small bevel gear can be rotated, which in turn drives the large bevel gear to rotate. This causes the threaded disc to rotate, simultaneously moving the three jaws closer to or further away from the center. This can be used to clamp and position workpieces 70 of different sizes. This three-jaw chuck is existing technology and will not be described in detail here. In this embodiment, the first positioning mechanism 30 has a first cooling hole 31 communicating with the outside. The multiple first positioning mechanisms 30 are arranged laterally at an angle side-by-side on the first support 10. There are six first positioning mechanisms 30 in total.

[0047] The second bracket 40 is arranged symmetrically with the first bracket 10 on the left and right sides; the second control box is mounted on the second bracket 40.

[0048] There are multiple transverse drive mechanisms 50, which are arranged side-by-side and spaced apart on the second bracket 40 and electrically connected to the second control box. In this embodiment, each transverse drive mechanism 50 includes a cylinder 51, a guide rail 52, and a drive block 53. The cylinder 51 is mounted on the second bracket 40 and electrically connected to the second control box. The guide rail 52 is transversely mounted on the second bracket 40. The drive block 53 is located at the output end of the cylinder 51 and is driven by the cylinder 51 to move back and forth transversely along the guide rail 52. The second positioning mechanism 60 is mounted on the drive block 53 and moves back and forth transversely with the drive block 53. The drive block 53 has a second through hole 531 and a second bearing 82. The second bearing 82 is located in the second through hole 531, and the second positioning mechanism 60 is mounted on the second bearing 82. The second bearing 82 helps to reduce friction, ensure the smoothness and accuracy of mechanical operation, and make rotation smoother. There are six transverse drive mechanisms 50.

[0049] Multiple second positioning mechanisms 60 are rotatably mounted on the second bracket 40. Each second positioning mechanism 60 is respectively mounted on a corresponding transverse drive mechanism 50 and is driven by the corresponding transverse drive mechanism 50 to move laterally back and forth. Each second positioning mechanism 60 is a three-jaw chuck used to clamp and position the other end of the workpiece 70. The second positioning mechanism 60 is correspondingly arranged with the first positioning mechanism 30 and cooperates to clamp and position the workpiece 70. In this embodiment, the second positioning mechanism 60 has a second cooling hole 61 inside, further providing cooling... The cooling air inlet 62 is disposed on the second positioning mechanism 60 and communicates with the second cooling hole 61. During the spraying process, the cooling air inlet 62 is sequentially connected to the second cooling hole 61, the internal cavity 71 of the workpiece 70, the first cooling hole 31, and the third cooling hole 222. The cooling purpose of the workpiece 70 can be achieved by the flow of air, or a good cooling effect can be achieved by adding coolant to the cooling air inlet 62. The multiple second positioning mechanisms 60 are arranged laterally at an angle on the second support 40. There are six second positioning mechanisms 60.

[0050] A third support 91 and multiple rotating wheels 92 are further provided. The third support 91 is located between the first support 10 and the second support 40. The multiple rotating wheels 92 are rotatably mounted on the third support 91. There are an even number of rotating wheels 92, with each pair of rotating wheels 92 forming a group. A placement position 921 for placing a workpiece 70 is formed between each pair of rotating wheels 92. Each group of rotating wheels 92 is correspondingly arranged with the first positioning mechanism 30 and the second positioning mechanism 60. The multiple groups of rotating wheels 92 are arranged side by side with intervals. The third support 91 can provide auxiliary support for the workpiece 70, enabling the processing of workpieces 70 that are longer and heavier, meeting different needs. Specifically, the rotating wheels 92 are fixed to the third support 91 with bolts, resulting in a simple structure and good stability. The multiple groups of rotating wheels 92 are arranged laterally at an angle side by side with intervals on the third support 91. There are twelve rotating wheels 92, forming six groups.

[0051] The working process of this embodiment is described in detail below:

[0052] First, the distance between the first support 10 and the second support 40 can be adjusted to a suitable distance according to the length of different workpieces 70, and the third support 91 is set between the first support 10 and the second support 40. Next, the workpiece 70 is placed on the placement position 921, and one end of the workpiece 70 is clamped on the three-jaw chuck of the first positioning mechanism 30. The second control box controls the transverse drive mechanism 50 to move closer to the first support 10. The transverse drive mechanism 50 drives the drive block 53 and the second positioning mechanism 60 to move closer to the first support 10, thereby causing the second positioning mechanism 60 to press the other end of the workpiece 70, and then the other end of the workpiece 70 is clamped and locked on the three-jaw chuck of the second positioning mechanism 60. Securely fasten; following the above steps, clamp multiple workpieces 70 onto the rotary device. After clamping the multiple workpieces 70, start the machine and control the motor 21 to rotate via the first control box, driving the first synchronous belt 23 to drive multiple drive shafts 22 and multiple second synchronous belts 24 to rotate, thereby causing multiple first positioning mechanisms 30 and multiple workpieces 70 to rotate. Multiple second positioning mechanisms 60 also rotate with the workpieces 70, and multiple rotating wheels 92 also rotate with the workpieces 70. During spraying, the external spraying device sprays multiple workpieces 70 sequentially from left to right and from bottom to top. When the top workpiece 70 is finished being sprayed, the bottom workpiece 70 has cooled down and can be sprayed directly again. The spraying cycle continues until the entire spraying work is completed.

[0053] During the spraying process, the cooling air inlet 62 is sequentially connected to the second cooling hole 61, the internal cavity 71 of the workpiece 70, the first cooling hole 31, and the third cooling hole 222. The cooling of the workpiece 70 can be achieved by the flow of air, or by adding coolant to the cooling air inlet 62 to achieve a good cooling effect.

[0054] This utility model is applicable to the spraying process of tubular workpieces 70.

[0055] The key design feature of this utility model is:

[0056] By mounting a rotary drive mechanism on a first bracket and electrically connecting it to a first control box, multiple first positioning mechanisms are rotatably mounted on the first bracket and driven to rotate by the rotary drive mechanism. These multiple first positioning mechanisms are arranged side-by-side with intervals. Each first positioning mechanism is a three-jaw chuck used to clamp one end of the workpiece. A second bracket is symmetrically arranged to the left and right of the first bracket. Multiple transverse drive mechanisms are arranged side-by-side with intervals on the second bracket and electrically connected to a second control box. Multiple second positioning mechanisms are rotatably mounted on the second bracket. Each second positioning mechanism is mounted on a corresponding transverse drive mechanism and driven to move laterally back and forth by the corresponding transverse drive mechanism. Each second positioning mechanism is a three-jaw chuck used to clamp the other end of the workpiece. These second positioning mechanisms are arranged correspondingly to the first positioning mechanisms. This split-type rotary spraying device effectively clamps and positions the workpiece, preventing it from shifting during processing. The rotary drive mechanism rotates the first positioning mechanism, the workpiece, and the second positioning mechanism, allowing the spraying device to spray the entire workpiece in one direction, significantly improving production efficiency. Furthermore, the distance between the spraying device and the curved surface of the tubular workpiece remains consistent during spraying, resulting in more uniform spraying, consistent coating thickness, and guaranteed spraying quality. This prevents excessively thick or thin coatings, color spots, and runs, greatly reducing the defect rate, facilitating production, and improving the quality of sprayed products. The distance between the first and second supports can be adjusted according to the length of different workpieces, making operation simple and meeting various needs.

[0057] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A split-type rotary spraying device, characterized in that: The system includes a first support, a first control box, a rotary drive mechanism, a first positioning mechanism, a second support, a second control box, a transverse drive mechanism, and a second positioning mechanism. The first control box is mounted on the first support. The rotary drive mechanism is mounted on the first support and electrically connected to the first control box. Multiple first positioning mechanisms are rotatably mounted on the first support and driven to rotate by the rotary drive mechanism. These multiple first positioning mechanisms are arranged side-by-side with intervals. Each first positioning mechanism is a three-jaw chuck used to clamp and position one end of a workpiece. The second support is symmetrically arranged to the left and right of the first support. The second control box is mounted on the second support. Multiple transverse drive mechanisms are arranged side-by-side with intervals on the second support and electrically connected to the second control box. Multiple second positioning mechanisms are rotatably mounted on the second support. Each second positioning mechanism is mounted on a corresponding transverse drive mechanism and driven to move laterally back and forth by the corresponding transverse drive mechanism. Each second positioning mechanism is a three-jaw chuck used to clamp and position the other end of a workpiece. The second positioning mechanism is correspondingly positioned to the first positioning mechanism and cooperates to clamp and position the workpiece.

2. The split-type rotary spraying device according to claim 1, characterized in that: The rotary drive mechanism includes a motor, multiple drive shafts, a first synchronous belt, and multiple second synchronous belts. The motor is mounted on a first bracket and electrically connected to a first control box. The multiple drive shafts are rotatably mounted on the first bracket. The multiple first positioning mechanisms are respectively mounted on the corresponding drive shafts and driven to rotate by the corresponding drive shafts. The first synchronous belt is located between the output shaft of the motor and a drive shaft. Each second synchronous belt is located between two adjacent drive shafts.

3. The split-type rotary spraying device according to claim 2, characterized in that: The first and second synchronous belts are arc-tooth synchronous belts. The output shaft of the motor is equipped with a first arc-tooth pulley, one drive shaft is equipped with three second arc-tooth pulleys, and another drive shaft is equipped with two second arc-tooth pulleys. The first synchronous belt is set on the first arc-tooth pulley and the corresponding second arc-tooth pulley. Each second synchronous belt is set on the corresponding two second arc-tooth pulleys and cooperates with the corresponding two second arc-tooth pulleys for synchronous transmission.

4. The split-type rotary spraying device according to claim 2, characterized in that: The first bracket includes multiple fixed seats arranged side by side at intervals. Each fixed seat is provided with a first through hole and further provided with multiple first bearings, which are respectively disposed on the corresponding drive shaft and located in the corresponding first through hole.

5. The split-type rotary spraying device according to claim 1, characterized in that: The lateral drive mechanism includes a cylinder, a guide rail, and a drive block. The cylinder is mounted on the second bracket and electrically connected to the second control box. The guide rail is laterally mounted on the second bracket. The drive block is mounted at the output end of the cylinder and is driven by the cylinder to move laterally back and forth along the guide rail. The second positioning mechanism is mounted on the drive block and moves laterally back and forth with the drive block.

6. The split-type rotary spraying device according to claim 5, characterized in that: The drive block is provided with a second through hole, and a second bearing is further provided therein. The second bearing is disposed in the second through hole, and the second positioning mechanism is disposed on the second bearing.

7. The split-type rotary spraying device according to claim 1, characterized in that: The first positioning mechanism has a first cooling hole that communicates with the outside. The second positioning mechanism has a second cooling hole and a cooling air inlet. The cooling air inlet is located on the second positioning mechanism and communicates with the second cooling hole.

8. The split-type rotary spraying device according to claim 1, characterized in that: The system further includes a third support and multiple rotating wheels. The third support is positioned between the first and second supports. The multiple rotating wheels are rotatably mounted on the third support. There are an even number of rotating wheels, with each pair forming a group. A placement position for placing a workpiece is formed between each pair of rotating wheels. Each group of rotating wheels is correspondingly positioned to the first and second positioning mechanisms. Multiple groups of rotating wheels are arranged side by side at intervals.

9. The split-type rotary spraying device according to claim 8, characterized in that: The rotating wheel is fixed to the third bracket by bolts.

10. The split-type rotary spraying device according to claim 8, characterized in that: The plurality of first positioning mechanisms are arranged side by side at intervals on the first support, and correspondingly, the plurality of second positioning mechanisms are arranged side by side at intervals on the second support, and the plurality of rotating wheels are arranged side by side at intervals on the third support.

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