Spraying device suitable for tubular workpiece surface

Abstract

The utility model relates to a surface spraying device suitable for tubular workpieces, which belongs to the technical field of hardware processing and comprises a workbench, and an adjustable clamping mechanism is mounted on the workbench. The adjustable clamping mechanism comprises an electric air cylinder fixedly installed on the side, away from the ground, of the workbench, and the center of the workbench is connected with a follow-up adjusting assembly and two movable clamping assemblies which are connected to the outer side of the follow-up adjusting assembly and distributed in a mirror symmetry mode. The electric air cylinder is connected with one movable clamping assembly. According to the surface spraying device suitable for the tubular workpiece, an automatic rotating function can be provided, it is ensured that the tubular workpiece can rotate evenly in the spraying process, so that each part of the outer surface can receive even coating, the clamping adjusting function can also be provided, and the clamping effect is improved. And the position and the force of the clamp can be automatically adjusted according to the size and the shape of a workpiece, so that the overall productivity of a production line is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hardware processing, in particular to a spraying device suitable for the surface of a tubular workpiece. Background Art

[0002] The workpiece surface spraying device is a mechanical equipment specially used for surface treatment of workpieces. It is widely used in hardware processing, metal processing, machinery manufacturing, automobile manufacturing, aerospace and other fields. This device uses spraying technology to achieve rust prevention, corrosion prevention, decoration or other special treatments on the workpiece surface, thereby improving the service life and aesthetics of the workpiece. The following is a detailed introduction to the technology, composition, application fields, etc. of the workpiece surface spraying device.

[0003] The tubular workpiece surface spraying device is mainly composed of a conveying system, a spraying system, a control system, a filtering and purification system, and a safety protection system. The conveying system includes a motor, a reducer, a conveyor belt, etc., which is used to smoothly and continuously convey the tubular workpiece to the spraying position; the spraying system includes a spray gun, a spray gun arm, a spray gun adjustment device, etc., which is used to achieve precise spraying on the workpiece surface; the control system includes a PLC controller, a touch screen operation panel, a sensor, etc., which is used to monitor and control the spraying process; the filtering and purification system includes an air filter device, a solvent recovery device, etc., which is used to ensure the cleanliness of the spraying environment and the recycling of the paint; the safety protection system includes an emergency stop button, a safety grating, a smoke alarm, etc., to ensure the safety of the operation process.

[0004] At present, during the spraying process of the tubular workpiece surface spraying device, the tubular workpiece rotates around its own axis to ensure that the outer surface is evenly sprayed, and multiple nozzles are used to spray the tubular workpiece from different angles to achieve full coverage. In addition, a high-precision positioning system is used to ensure the stability and position accuracy of the tubular workpiece during the spraying process.

[0005] With the advancement of science and technology and the improvement of environmental protection requirements, tubular workpiece surface spraying devices are developing in a more automated, intelligent and environmentally friendly direction. For example, by introducing artificial intelligence and machine learning technologies, adaptive control of the spraying process can be achieved to improve spraying quality and efficiency; more environmentally friendly coatings and cleaning technologies can be used to reduce the impact on the environment; and modular design can be used to improve the flexibility and maintainability of equipment. In addition, with the development of 3D printing technology, tubular workpiece surface spraying devices may be combined with 3D printing technology in the future to achieve surface treatment of more complex structural parts.

[0006] At present, in the field of hardware processing technology, in the production process of tubular workpieces, in order to improve the protection ability of the outer surface of the workpiece, it is often necessary to form a protective coating on its surface through spraying technology. However, the existing spraying device generally adopts a clamping and fixing method when fixing the tubular workpiece. Although this method can ensure the stability of the workpiece, during the spraying operation, the clamping surface of the tubular workpiece cannot be directly sprayed. Due to the incomplete spraying surface, it not only affects the bonding force between the coating and the workpiece surface, reduces the quality and durability of the coating, but also may cause the coating to crack and peel off during subsequent use, thereby making it impossible to achieve comprehensive spraying of the outer surface of the tubular workpiece, thereby affecting the quality and protection effect of the coating. At the same time, the traditional fixing fixture needs to be manually adjusted to adapt to workpieces of different lengths, which is not only time-consuming and labor-intensive, but also prone to errors. Therefore, developing a spraying device that can ensure comprehensive spraying of the outer surface of the tubular workpiece is of great significance for improving the coating quality and workpiece protection performance. Utility Model Content

[0007] 1. Technical issues to be resolved

[0008] In view of the shortcomings of the prior art, the utility model provides a spraying device suitable for the surface of tubular workpieces, which has the advantages of being able to automatically rotate the workpiece and automatically adjust the clamping to adapt to workpieces of different sizes, and solves the problem that the existing spraying device cannot fully spray when fixing the tubular workpiece, thus affecting the coating quality and protective effect.

[0009] (II) Technical solution

[0010] In order to achieve the above-mentioned purpose of being able to automatically rotate the workpiece and automatically adjust the clamping to adapt to workpieces of different sizes, the utility model provides the following technical solutions: a spraying device suitable for the surface of a tubular workpiece, comprising a workbench, on which an adjustable clamping mechanism is installed;

[0011] The adjustable clamping mechanism comprises an electric cylinder fixedly mounted on the side of the workbench away from the ground, a follow-up adjustment component and two groups of mobile clamping components respectively connected to the outside of the follow-up adjustment component and distributed in a mirror-symmetrical manner are connected to the center of the workbench, the electric cylinder is connected to one group of the mobile clamping components, and two slide rails in a mirror-symmetrical manner are fixedly connected to the side of the workbench away from the ground, and the slide rails are connected to the mobile clamping components;

[0012] The electric cylinder is connected to another mobile clamping assembly connected to the follow-up adjustment assembly through one of the mobile clamping assemblies, and the electric cylinder pushes one of the mobile clamping assemblies to move, and drives the other mobile clamping assembly to move synchronously under the rotation of the follow-up adjustment assembly;

[0013] The adjustable clamping mechanism also includes an adjustment control box installed on another of the mobile clamping components and a power component installed in the adjustment control box, one side of the power component is connected to a gear transmission component and a rotating component connected to the gear transmission component, a No. 1 connecting rod connected to the adjustment control box is connected in the rotating component, a No. 2 connecting rod is connected on one side of one of the mobile clamping components close to the follow-up adjustment component, and an anti-slip splint is fixedly connected to the opposite end of the No. 1 connecting rod and the No. 2 connecting rod.

[0014] Furthermore, one end of the No. 1 connecting rod is rotatably connected to the inner wall of the adjustment control box through a bearing, and the other opposite end passes through the rotating component and another movable clamping component in sequence and extends to the outside to be connected to the anti-slip clamp.

[0015] Furthermore, the follow-up adjustment assembly includes a support rod and a transmission spur gear; one end of the support rod is rotatably connected to one side of the workbench through a bearing, and the inner side of the transmission spur gear is fixedly connected to the outer side of the support rod.

[0016] Furthermore, the mobile clamping assembly includes a tooth plate and a sliding adjustment block; opposite sides of the two tooth plates are meshed with the transmission spur gear, and the two tooth plates are distributed in a mirror-symmetrical manner, one side of the sliding adjustment block is fixedly connected to one side of the tooth plate, and the two sliding adjustment blocks are distributed in a mirror-symmetrical manner, one side of one of the sliding adjustment blocks is fixedly connected to the piston rod of the electric cylinder, and one side of the other sliding adjustment block is fixedly installed with the adjustment control box by bolts;

[0017] A sliding groove for the slide rail to slide in is provided on one side of the slide adjustment block close to the workbench;

[0018] The electric cylinder drives one of the sliding adjustment blocks to move, thereby driving the toothed plate connected to one of the sliding adjustment blocks to move, and drives the transmission spur gear to rotate under the meshing action, thereby driving the sliding adjustment block connected to the other toothed plate to move.

[0019] Furthermore, the power assembly includes a servo motor, a rotating rod and a bearing support; one side of the servo motor and the bearing support are respectively fixedly mounted on the same inner wall of the adjustment control box, one end of the rotating rod is fixedly connected to the output shaft of the servo motor, and the other end thereof passes through the rotating rod and is connected to the gear transmission assembly.

[0020] Furthermore, the inner side of the bearing support is rotatably connected to the outer side of the rotating rod via a bearing.

[0021] Furthermore, the gear transmission assembly includes a driving bevel gear and a driven bevel gear; one side of the driving bevel gear is fixedly connected to an end of the rotating rod away from the servo motor;

[0022] The servo motor drives the rotating rod to rotate, so as to drive the driven bevel gear meshed with the driving bevel gear to rotate.

[0023] Furthermore, the rotating assembly includes a worm and a worm wheel; both ends of the worm are rotatably connected to the inner side wall of the regulating control box through bearings, the worm and the worm wheel are meshed with each other, and the outer side of the worm is fixedly connected to the inner side of the driven bevel gear;

[0024] The driven bevel gear rotates to drive the worm to rotate, thereby driving the worm wheel meshed therewith to rotate.

[0025] (III) Beneficial effects

[0026] Compared with the prior art, the utility model provides a spraying device suitable for the surface of a tubular workpiece, which has the following beneficial effects:

[0027] The device is suitable for spraying the surface of tubular workpieces. Through the mutual cooperation between the adjustable clamping mechanisms on the workbench, it can provide an automatic rotation function, without manual operation, reducing the problem of unstable spraying quality caused by improper manual operation. Compared with manual or traditional fixed spraying, it ensures that the tubular workpiece can rotate evenly during the spraying process, so that each part of the outer surface can receive uniform coating, greatly improving the spraying coverage rate, and reducing material waste caused by uneven spraying, significantly improving the spraying efficiency, and can also provide an adjustable clamping function, which can automatically adjust the position and strength of the clamp according to the size and shape of the workpiece, ensuring the stability of the workpiece during the spraying process, so that it is widely used in products of various specifications, without the need to replace the clamp or replace the equipment, thereby greatly reducing the production cost and improving the utilization rate of the equipment, thereby effectively improving the overall production capacity of the production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the structure of the utility model;

[0029] Figure 2 for Figure 1 A cross-sectional diagram of the connection structure of the central regulating control box;

[0030] Figure 3 for Figure 2 A partial enlarged schematic diagram of the middle A part;

[0031] Figure 4 for Figure 1A three-dimensional schematic diagram of the middle support rod connection structure.

[0032] In the figure: 1 workbench, 200 adjustable clamping mechanism, 201 electric cylinder, 2021 support rod, 2022 transmission spur gear, 2031 tooth plate, 2032 sliding adjustment block, 204 slide rail, 205 adjustment control box, 2061 servo motor, 2062 rotating rod, 2063 bearing support, 2071 driving bevel gear, 2072 driven bevel gear, 2081 worm, 2082 worm wheel, 209 No. 1 connecting rod, 210 No. 2 connecting rod, 211 anti-slip splint. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0034] See also Figure 1-4 , the utility model provides a technical solution: a device suitable for spraying the surface of a tubular workpiece, comprising a workbench 1, on which an adjustable clamping mechanism 200 is installed;

[0035] Through the mutual cooperation of the adjustable clamping mechanism 200 on the workbench 1, an automatic rotation function can be provided, without the need for manual operation, reducing the problem of unstable spraying quality caused by improper manual operation. Compared with manual or traditional fixed spraying, it ensures that the tubular workpiece can rotate evenly during the spraying process, so that every part of the outer surface can receive uniform coating, greatly improving the spraying coverage rate, and reducing material waste caused by uneven spraying, significantly improving the spraying efficiency, and can also provide an adjustable clamping function, which can automatically adjust the position and strength of the clamp according to the size and shape of the workpiece, ensuring the stability of the workpiece during the spraying process, so that it can be widely used in products of various specifications, without the need to replace the clamp or replace the equipment, thereby greatly reducing the production cost and improving the utilization rate of the equipment, thereby effectively improving the overall production capacity of the production line.

[0036] In this embodiment, the adjustable clamping mechanism 200 is used to improve the comprehensiveness and efficiency of spraying, and also greatly enhances the adaptability and stability of the equipment.

[0037] like Figure 1 , Figure 2 Figure 3 and Figure 4As shown, the adjustable clamping mechanism 200 includes an electric cylinder 201 fixedly mounted on the side of the workbench 1 away from the ground, a follow-up adjustment component and two groups of mobile clamping components respectively connected to the outside of the follow-up adjustment component and distributed in a mirror-symmetrical manner are connected to the center of the workbench 1, the electric cylinder 201 is connected to one group of mobile clamping components, and two slide rails 204 in a mirror-symmetrical manner are fixedly connected to the side of the workbench 1 away from the ground, and the slide rails 204 are connected to the mobile clamping components;

[0038] The electric cylinder 201 is connected to another mobile clamping assembly connected to the follow-up adjustment assembly through one of the mobile clamping assemblies. The electric cylinder 201 pushes one of the mobile clamping assemblies to move, and drives the other mobile clamping assembly to move synchronously under the rotation of the follow-up adjustment assembly.

[0039] The adjustable clamping mechanism 200 also includes an adjustment control box 205 installed on another mobile clamping component and a power component installed in the adjustment control box 205. One side of the power component is connected to a gear transmission component and a rotating component connected to the gear transmission component. The rotating component is connected to a No. 1 connecting rod 209 connected to the adjustment control box 205. A No. 2 connecting rod 210 is connected to one side of one of the mobile clamping components close to the follow-up adjustment component. The opposite ends of the No. 1 connecting rod 209 and the No. 2 connecting rod 210 are fixedly connected to anti-slip splints 211.

[0040] It should be noted that one end of the No. 1 connecting rod 209 is rotatably connected to the inner wall of the adjustment control box 205 through a bearing, and the other end thereof passes through the rotating assembly and another movable clamping assembly in sequence and extends to the outside to be connected to the anti-slip splint 211, so as to make the No. 1 connecting rod 209 rotate more stably.

[0041] It can be understood that the follow-up adjustment assembly includes a support rod 2021 and a transmission spur gear 2022; one end of the support rod 2021 is rotatably connected to one side of the workbench 1 through a bearing, and the inner side of the transmission spur gear 2022 is fixedly connected to the outer side of the support rod 2021, so that the two groups of movable clamping assemblies can move synchronously in opposite directions.

[0042] In addition, the mobile clamping assembly includes a tooth plate 2031 and a sliding adjustment block 2032; opposite sides of the two tooth plates 2031 are meshed with the transmission spur gear 2022, and the two tooth plates 2031 are distributed in a mirror-symmetrical manner, one side of the sliding adjustment block 2032 is fixedly connected to one side of the tooth plate 2031, and the two sliding adjustment blocks 2032 are distributed in a mirror-symmetrical manner, one side of one sliding adjustment block 2032 is fixedly connected to the piston rod of the electric cylinder 201, and one side of the other sliding adjustment block 2032 is fixedly installed with the adjustment control box 205 by bolts;

[0043] A sliding groove for the slide rail 204 to slide against is provided on one side of the slide adjustment block 2032 close to the workbench 1;

[0044] The electric cylinder 201 drives one of the sliding adjustment blocks 2032 to move, thereby driving the tooth plate 2031 connected to one of the sliding adjustment blocks 2032 to move, and drives the transmission spur gear 2022 to rotate under the meshing action, so as to drive the sliding adjustment block 2032 connected to the other tooth plate 2031 to move, so as to be able to stably drive the two sliding adjustment blocks 2032 to move in opposite directions at the same time, so that the position and strength of the clamp can be automatically adjusted according to the size and shape of the workpiece, ensuring the stability of the workpiece during the spraying process, so that it can be widely used in products of various specifications without replacing the clamp or equipment.

[0045] In this embodiment, the power assembly includes a servo motor 2061, a rotating rod 2062 and a bearing support 2063; one side of the servo motor 2061 and the bearing support 2063 are respectively fixedly mounted on the same inner wall of the adjustment control box 205, one end of the rotating rod 2062 is fixedly connected to the output shaft of the servo motor 2061, and the other end thereof passes through the rotating rod 2062 and is connected to the gear transmission assembly, so as to be able to stably drive the gear transmission assembly to rotate.

[0046] It should also be noted that the inner side of the bearing support 2063 is rotatably connected to the outer side of the rotating rod 2062 via a bearing in order to stably support the rotation of the rotating rod 2062 .

[0047] It should be further explained that the gear transmission assembly includes a driving bevel gear 2071 and a driven bevel gear 2072; one side of the driving bevel gear 2071 is fixedly connected to an end of the rotating rod 2062 away from the servo motor 2061;

[0048] The servo motor 2061 drives the rotating rod 2062 to rotate, so as to drive the driven bevel gear 2072 meshed with the driving bevel gear 2071 to rotate, so as to stably drive the rotating assembly to rotate.

[0049] It should also be noted that the rotating assembly includes a worm 2081 and a worm wheel 2082; both ends of the worm 2081 are rotatably connected to the inner wall of the adjustment control box 205 through bearings, the worm 2081 and the worm wheel 2082 are meshed with each other, and the outer side of the worm 2081 is fixedly connected to the inner side of the driven bevel gear 2072;

[0050] The driven bevel gear 2072 rotates to drive the worm 2081 to rotate, thereby driving the worm wheel 2082 meshing thereon to rotate, so as to be able to stably drive the No. 1 connecting rod 209 to rotate, and also to ensure that the tubular workpiece can rotate evenly during the spraying process, so that each part of the outer surface can receive uniform coating, which greatly improves the spraying coverage rate, reduces material waste caused by uneven spraying, and significantly improves the spraying efficiency.

[0051] The working principle of the above embodiment is:

[0052] When it is necessary to clamp the tubular workpiece, first place the tubular workpiece between the opposite sides of the two sliding adjustment blocks 2032, then start the electric cylinder 201, and drive one of the sliding adjustment blocks 2032 to move under the action of thrust, and drive one of the tooth plates 2031 fixed thereon to move, and drive the transmission spur gear 2022 to rotate on the outside of the support rod 2021 under the meshing action of the tooth plate 2031 and the transmission spur gear 2022, and synchronously drive the other tooth plate 2031 to move, and drive the other sliding adjustment block 2032 to move stably on the outside of the slide rail 204 under the thrust generated by the movement of the other tooth plate 2031, when one side of the two sliding adjustment blocks 2032 respectively abuts against the two ends of the tubular workpiece, After the clamping of the tubular workpiece is completed, when the surface of the tubular workpiece needs to be fully sprayed, the servo motor 2061 is first started, and the rotating rod 2062 is driven to rotate under the rotation support of the bearing, so as to drive the driven bevel gear 2072 engaged on the active bevel gear 2071 to rotate. Since the driven bevel gear 2072 is connected to the worm 2081, the driven bevel gear 2072 rotates under the rotation support of the bearing to drive the worm 2081 to rotate stably, and drives the engaged worm wheel 2082 to rotate, so as to drive the No. 1 connecting rod 209 to rotate under the rotation support of the bearing, so that the tubular workpiece can be automatically rotated, so that each part of the outer surface of the tubular workpiece can receive uniform coating.

[0053] Compared with the prior art: the device is suitable for spraying the surface of tubular workpieces. Through the mutual cooperation between the adjustable clamping mechanism 200 on the workbench 1, it can provide an automatic rotation function, without manual operation, reducing the problem of unstable spraying quality caused by improper manual operation. Compared with manual or traditional fixed spraying, it ensures that the tubular workpiece can rotate evenly during the spraying process, so that every part of the outer surface can receive uniform coating, greatly improving the spraying coverage rate, and reducing material waste caused by uneven spraying, significantly improving the spraying efficiency, and can also provide an adjustable clamping function, which can automatically adjust the position and strength of the clamp according to the size and shape of the workpiece, ensuring the stability of the workpiece during the spraying process, so that it can be widely used in products of various specifications, without the need to replace the clamp or replace the equipment, thereby greatly reducing the production cost and improving the utilization rate of the equipment, thereby effectively improving the overall production capacity of the production line, and solving the problem that the existing spraying device cannot fully spray when fixing the tubular workpiece, affecting the coating quality and protective effect.

[0054] The electrical components appearing in the text are all electrically connected to the main controller and the power supply. The main controller can be a conventional known device that controls a computer, etc., and the existing publicly available power connection technology and power supply provision are also common knowledge in the field, so this application will not go into details.

[0055] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0056] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention.

Claims

1. A spraying device for a tubular workpiece surface, comprising a workbench (1), characterized in that: An adjustable clamping mechanism (200) is installed on the workbench (1); The adjustable clamping mechanism (200) comprises an electric cylinder (201) fixedly mounted on a side of the workbench (1) away from the ground, a follow-up adjustment component and two groups of mobile clamping components respectively connected to the outside of the follow-up adjustment component and distributed in a mirror-symmetrical manner are connected at the center of the workbench (1), the electric cylinder (201) is connected to one group of the mobile clamping components, and two slide rails (204) in a mirror-symmetrical manner are fixedly connected to the side of the workbench (1) away from the ground, and the slide rails (204) are connected to the mobile clamping components; The electric cylinder (201) is connected to another mobile clamping assembly connected to the follow-up adjustment assembly via one of the mobile clamping assemblies, and the electric cylinder (201) pushes one of the mobile clamping assemblies to move, and drives the other mobile clamping assembly to move synchronously under the rotation of the follow-up adjustment assembly; The adjustable clamping mechanism (200) further comprises an adjustment control box (205) mounted on another of the mobile clamping components and a power component mounted in the adjustment control box (205), one side of the power component being connected to a gear transmission component and a rotating component connected to the gear transmission component, the rotating component being connected to a No. 1 connecting rod (209) connected to the adjustment control box (205), a No. 2 connecting rod (210) being connected to one side of one of the mobile clamping components close to the follow-up adjustment component, and an anti-slip splint (211) being fixedly connected to the opposite end of the No. 1 connecting rod (209) and the No. 2 connecting rod (210).

2. A spraying device for the surface of a tubular workpiece according to claim 1, characterized in that: One end of the No. 1 connecting rod (209) is rotatably connected to the inner wall of the regulating control box (205) via a bearing, and the other end thereof passes through the rotating assembly and another movable clamping assembly in sequence and extends to the outside to be connected to the anti-slip clamping plate (211).

3. A spray coating device for a tubular workpiece surface according to claim 1, characterized in that: The follow-up adjustment component comprises a support rod (2021) and a transmission spur gear (2022); one end of the support rod (2021) is rotatably connected to one side of the workbench (1) via a bearing, and the inner side of the transmission spur gear (2022) is fixedly connected to the outer side of the support rod (2021).

4. A spray coating device for a tubular workpiece surface according to claim 3, characterized in that: The mobile clamping assembly comprises a tooth plate (2031) and a sliding adjustment block (2032); opposite sides of the two tooth plates (2031) are meshed with the transmission spur gear (2022), and the two tooth plates (2031) are distributed in a mirror-symmetrical manner, one side of the sliding adjustment block (2032) is fixedly connected to one side of the tooth plate (2031), and the two sliding adjustment blocks (2032) are distributed in a mirror-symmetrical manner, one side of one of the sliding adjustment blocks (2032) is fixedly connected to the piston rod of the electric cylinder (201), and one side of the other sliding adjustment block (2032) is fixedly installed with the adjustment control box (205) by bolts; A sliding groove for the slide rail (204) to slide against is provided on a side of the slide adjustment block (2032) close to the workbench (1); The electric cylinder (201) drives one of the sliding adjustment blocks (2032) to move, thereby driving the toothed plate (2031) connected to one of the sliding adjustment blocks (2032) to move, and drives the transmission spur gear (2022) to rotate under the meshing action, thereby driving the sliding adjustment block (2032) connected to the other toothed plate (2031) to move.

5. The device for spraying on the surface of a tubular workpiece according to claim 1, characterized in that: The power assembly comprises a servo motor (2061), a rotating rod (2062) and a bearing support (2063); one side of the servo motor (2061) and the bearing support (2063) are respectively fixedly mounted on the same inner wall of the adjustment control box (205); one end of the rotating rod (2062) is fixedly connected to the output shaft of the servo motor (2061), and the other end thereof passes through the rotating rod (2062) and is connected to the gear transmission assembly.

6. A spray coating device for the surface of a tubular workpiece according to claim 5, characterized in that: The inner side of the bearing support (2063) is rotatably connected to the outer side of the rotating rod (2062) via a bearing.

7. The device for spraying on the surface of a tubular workpiece according to claim 5, characterized in that: The gear transmission assembly comprises a driving bevel gear (2071) and a driven bevel gear (2072); one side of the driving bevel gear (2071) is fixedly connected to an end of the rotating rod (2062) away from the servo motor (2061); The servo motor (2061) drives the rotating rod (2062) to rotate, thereby driving the driven bevel gear (2072) meshed with the driving bevel gear (2071) to rotate.

8. The device for spraying on the surface of a tubular workpiece according to claim 7, characterized in that: The rotating assembly comprises a worm (2081) and a worm wheel (2082); two ends of the worm (2081) are rotatably connected to the inner wall of the regulating control box (205) via bearings, the worm (2081) and the worm wheel (2082) are meshed with each other, and the outer side of the worm (2081) is fixedly connected to the inner side of the driven bevel gear (2072); The driven bevel gear (2072) rotates to drive the worm (2081) to rotate, thereby driving the worm wheel (2082) meshed therewith to rotate.

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