Spraying equipment for rust-proof layer on surface of renovated steel drum

Abstract

The utility model discloses spraying equipment for a rust-proof layer on the surface of a renovated steel drum, and relates to the technical field of spraying equipment, the spraying equipment comprises a support, sliding assemblies are fixedly connected to the two sides of the top end of the support, telescopic assemblies are fixedly connected to the two sides of the support, a driving assembly is slidably connected to one side of the support, and the telescopic assemblies are fixedly connected to the other side of the support. And the exterior of the sliding assembly is slidably connected with a conveying assembly, the top end, away from the driving assembly, of the support is fixedly connected with a spraying assembly, and a steel drum body is arranged at the top end of the conveying assembly. According to the utility model, the capability of equipment for adapting to steel drums with different sizes is enhanced, the equipment can adapt to the steel drums with different shapes and sizes, the uniformity and efficiency of the spraying process are kept, the labor cost and the operation difficulty are reduced, and the spraying work of the rust-proof layer on the surface of the renovated steel drum becomes more efficient, simpler, more convenient and more reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of spraying equipment, in particular to a spraying equipment for refurbishing an anti-rust layer on the surface of a steel drum. Background Art

[0002] Refurbishing steel drums refers to the repair and refurbishment of old, damaged or used steel containers so that they can continue to be used or put back into service. This process usually includes cleaning, patching, coating repair and other necessary maintenance steps. When refurbishing steel drums, especially for steel drums used for storage or transportation of items, it is often necessary to apply an anti-rust layer on the surface to prevent corrosion and extend its service life.

[0003] After searching, the existing Chinese patent (Announcement No.: CN207746025U) discloses a steel drum spraying bracket, which relates to a spraying bracket, which solves the problem that it is inconvenient to spray steel drums with a handheld spray gun, the spraying quality cannot be guaranteed, and it is unsafe. The technical solution adopted by the utility model is: a steel drum spraying bracket, including a frame, a guide rail, a support arm and a spray gun clamp, two guide rails are arranged on the frame, and the two guide rails are parallel to each other; the support arm is composed of a cantilever and a column, the column is fixed on the frame, the cantilever is located above the two guide rails, and the spray gun clamp is installed on the cantilever. The spray gun is installed on the spray gun clamp, the steel drum is placed between the two guide rails, the position of the spray gun and the steel drum is adjusted to align the weld with the spray gun muzzle, and then the steel drum is pushed horizontally at a uniform speed to perform the spraying operation. The spray gun is clamped in the spray gun clamp, which reduces the difficulty and strength of operation and reduces the probability of heavy metal poisoning of the operator. The steel drum spraying bracket helps to ensure the straightness and aesthetics of the spraying and improve the surface quality of the spraying.

[0004] The above-mentioned steel drum spraying bracket adopts a spray gun to spray the inside of the steel drum in order to solve the inconvenient operation of spraying the steel drum with a hand-held spray gun. Since the spray gun is clamped in the spray gun clamp, the steel drum is placed on the track and maintains a relatively uniform linear motion. However, due to the changes in the shape and size of the steel drum, the steel drum cannot be transported. Therefore, we propose a spraying equipment for refurbishing the anti-rust layer on the surface of the steel drum to solve the above problem. Utility Model Content

[0005] The utility model provides a spraying device for refurbishing the anti-rust layer on the surface of a steel drum, which solves the technical problem that the current steel drum spraying bracket cannot convey steel drums of different sizes.

[0006] In order to solve the above technical problems, the utility model provides a spraying device for refurbishing the anti-rust layer on the surface of a steel drum, comprising a bracket, both sides of the top of the bracket are fixedly connected with sliding components, both sides of the bracket are fixedly connected with telescopic components, one side of the bracket is slidably connected with a driving component, the outside of the sliding component is slidably connected with a transmission component, the top of the bracket away from the driving component is fixedly connected with a spraying component, and the top of the transmission component is provided with a steel drum body;

[0007] The sliding assembly includes a fixing seat 1, a cylinder, and a fixing seat 2. The bottom end of the fixing seat 1 is fixedly connected to the top end of the bracket, the bottom end of the fixing seat 2 is fixedly connected to the top end of the bracket, one end of the cylinder is fixedly connected to the fixing seat 1, and the other end of the cylinder is fixedly connected to the fixing seat 2.

[0008] The above technical solution is adopted: the bracket is used as the main structure of the equipment, and the sliding components are fixedly connected on both sides of the top. This connection method enables the sliding component to move stably and flexibly on the bracket, thereby adjusting the position of the transmission component. The telescopic components fixedly connected on both sides of the bracket can adjust the width of the bracket, which is essential for adapting to steel drums of different sizes. The adjustment function of the telescopic component enables the equipment to flexibly cope with steel drums of different sizes, increasing the scope of application of the equipment. The driving component is connected to the bracket by sliding, so that the driving force can be transmitted to the transmission component more smoothly. This connection method ensures the stable operation of the transmission component, thereby ensuring the uniformity and efficiency of the spraying process. The transmission component is connected to the sliding component by an external sliding method. This design allows the transmission component to operate smoothly and accurately when the steel drum is rotated, ensuring the uniform rotation of the steel drum during the spraying process. The spraying component is fixed at the top of the bracket away from the driving component. This fixing method makes the spraying component stable in position during operation. The fixed seat 1 and the fixed seat 2 are respectively fixed at the top of the bracket, and the cylinder connects the two fixed seats. This design structure makes the sliding component more stable when bearing the load brought by the transmission component, while maintaining its sliding flexibility.

[0009] Preferably, the telescopic assembly includes an electric telescopic rod, a connecting block, and a connecting rod, one end of the electric telescopic rod is fixedly connected to the connecting block, one end of the connecting block away from the electric telescopic rod is fixedly connected to one of the connecting rods, and the driving end of the electric telescopic rod is fixedly connected to the other connecting rod.

[0010] The above technical solution is adopted: one end of the electric telescopic rod is fixedly connected to the connecting block. As a driving force source, the electric telescopic rod can accurately control its extension or shortening length, thereby achieving precise position adjustment or force transmission. The connecting block serves as a fixed point, provides stability, and transmits the movement or force of the electric telescopic rod to the entire mechanism. The other end of the connecting block away from the electric telescopic rod is fixedly connected to one of the connecting rods. This design allows the connecting rod to move or adjust its position as the electric telescopic rod is extended or retracted. The driving end of the electric telescopic rod is fixedly connected to another connecting rod. This connection method enables the electric telescopic rod to directly drive the connecting rod, provide power and control, and is used to achieve more complex mechanical movements or precise position control.

[0011] Preferably, the driving assembly includes a mounting seat, a motor, and a conveyor belt. One side of the mounting seat is slidably connected to the bracket, the bottom end of the motor is fixedly connected to the top end of the mounting seat, and the driving end of the motor is sleeved with a conveyor belt.

[0012] The above technical solution is adopted: the sliding connection design between the mounting seat and the bracket allows the mounting seat to be adjusted on the bracket to adapt to different operating requirements, the fixed connection between the motor and the mounting seat ensures the stability and safety of the motor, and the conveyor belt is installed on the driving end of the motor to convert the power of the motor into power that can be used to drive other mechanical components, thereby improving the efficiency and reliability of power transmission.

[0013] Preferably, the conveying assembly includes a guide rail, a roller shaft one, and a roller shaft two. Two guide rails are provided, the inner parts of the two guide rails are slidably connected to the cylinder, the bottom ends of the two guide rails are slidably connected to the bracket, the roller shaft one is rotatably connected to one of the guide rails, and the outer part of the roller shaft two is rotatably connected to the other guide rail.

[0014] The above technical solution is adopted: the guide rail can slide smoothly around the cylinder. Such a sliding connection reduces friction and wear during movement and prolongs the service life of the components. At the same time, the coordinated use of the two guide rails can better disperse the load and stably transmit objects, ensuring the accuracy and stability during the transmission process. By slidingly connecting the bottom end of the guide rail to the bracket, the stability of the entire guide rail system is guaranteed. This connection method allows the guide rail to make slight position adjustments according to the needs of load and movement, thereby avoiding structural deformation or damage caused by improper fixation or long-term use. The rotational connection between the roller shaft and the guide rail allows the roller to move smoothly along the guide rail. Such a design reduces friction during movement and improves the smoothness of movement. By setting a rotating roller shaft on one guide rail, the stability and accuracy of transmitting objects or forces can be ensured. The design of roller shaft 2 is similar to roller shaft 1. Roller shaft 2 is externally connected to another guide rail. The coordinated work of the two roller shafts ensures balance and precise alignment during the transmission process.

[0015] Preferably, the spraying assembly includes a base, a rotating column, and a spray head. The bottom end of the base is fixedly connected to the top end of the bracket, the outside of the rotating column is rotatably connected to the top end of the base, and one end of the spray head is mounted on the rotating column.

[0016] The above technical solution is adopted: the fixed connection between the base and the bracket provides a solid foundation for the entire spray assembly. This fixed connection ensures the stability and safety of the base during the spraying process, preventing displacement or tilting due to equipment vibration or external force. The rotating connection of the rotating column allows the spray head to rotate at different angles, which provides flexibility for the spraying operation. The spray head is installed on the rotating column, which allows the spraying direction to change with the rotation of the rotating column, thereby achieving more precise spraying control.

[0017] Preferably, the base arranged in the spraying assembly is used to spray the surface of the steel barrel body to be sprayed, and the spraying assembly arranged on the conveying assembly is used to convey the steel barrel body, wherein when the driving assembly drives the conveying assembly to move the steel barrel body to the spraying area of ​​the spraying assembly, the spraying assembly sprays the surface of the steel barrel body.

[0018] The above technical solution is adopted: the base serves as the core support of the spraying assembly, providing stability and precise positioning capability for the spraying process. This stability is the key to achieving uniform coating. The spraying assembly is set on the conveying assembly, so that the steel drum can be sprayed continuously or on demand during movement, which improves the spraying efficiency and flexibility. The introduction of the drive assembly ensures the smooth movement of the steel drum during the conveying process, which is crucial to avoiding unevenness in the spraying process. When the steel drum moves to the spraying area, the spraying assembly can effectively cover its surface.

[0019] Compared with the related art, the utility model has the following beneficial effects:

[0020] 1. Compared with the traditional steel drum spraying support, the utility model sets a sliding component, a telescopic component, and a transmission component. The sliding component enables the transmission component to move stably and flexibly on the support and adjust to steel drums of different sizes. The telescopic component provides the ability to adjust the width of the equipment, enhances the ability of the equipment to adapt to steel drums of different sizes, and can adapt to steel drums of different shapes and sizes, maintain the uniformity and efficiency of the spraying process, and at the same time reduce the labor intensity of the operator and the difficulty of the spraying operation. Through the mechanized transmission and spraying method, the efficiency and quality of the spraying operation are improved.

[0021] 2. In the utility model, by setting up a driving assembly and a transmission assembly, the stability and safety of the motor are guaranteed by a fixed connection with the mounting seat. At the same time, the conveyor belt effectively transmits the power of the motor to other mechanical components to achieve a transmission effect. The design of the rotating column enables the spray head to rotate at multiple angles, providing flexibility for the spraying operation, while reducing labor costs and operating difficulty, making the spraying of the anti-rust layer on the surface of the refurbished steel drum more efficient, simple and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A three-dimensional diagram of a spraying device for refurbishing the anti-rust layer on the surface of a steel drum;

[0023] Figure 2 This is a structural diagram of a spraying component in a spraying device for refurbishing the anti-rust layer on the surface of a steel drum;

[0024] Figure 3 This is a structural diagram of a drive component in a spraying device for refurbishing the anti-rust layer on the surface of a steel drum;

[0025] Figure 4 The present invention is a structural diagram of a telescopic component in a spraying device for refurbishing the anti-rust layer on the surface of a steel drum.

[0026] Numbers in the figure: 1. bracket; 2. sliding assembly; 201. fixed seat 1; 202. cylinder; 203. fixed seat 2; 3. telescopic assembly; 301. electric telescopic rod; 302. connecting block; 303. connecting rod; 4. driving assembly; 401. mounting seat; 402. motor; 403. conveyor belt; 5. conveying assembly; 501. guide rail; 502. roller shaft 1; 503. roller shaft 2; 6. spraying assembly; 601. base; 602. rotating column; 603. nozzle; 7. steel barrel body. DETAILED DESCRIPTION

[0027] 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 of 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.

[0028] Embodiment 1,

[0029] like Figure 1 - Figure 4As shown, a spraying device for refurbishing the anti-rust layer on the surface of a steel drum comprises a bracket 1, both sides of the top of the bracket 1 are fixedly connected with sliding components 2, both sides of the bracket 1 are fixedly connected with telescopic components 3, one side of the bracket 1 is slidably connected with a driving component 4, the outside of the sliding component 2 is slidably connected with a transmission component 5, the top of the bracket 1 away from the driving component 4 is fixedly connected with a spraying component 6, and the top of the transmission component 5 is provided with a steel drum body 7;

[0030] The sliding assembly 2 includes a fixing seat 1 201, a cylinder 202, and a fixing seat 203. The bottom end of the fixing seat 1 201 is fixedly connected to the top of the bracket 1, the bottom end of the fixing seat 203 is fixedly connected to the top of the bracket 1, one end of the cylinder 202 is fixedly connected to the fixing seat 1 201, and the other end of the cylinder 202 is fixedly connected to the fixing seat 2 203. The bracket 1 is the main structure of the equipment, and the sliding assembly 2 is fixedly connected to both sides of its top. This connection method enables the sliding assembly 2 to move stably and flexibly on the bracket 1, thereby adjusting the position of the transmission assembly 5. The telescopic assembly 3 fixedly connected to both sides of the bracket 1 can adjust the width of the bracket 1, which is essential for adapting to steel drums of different sizes. The adjustment function of the telescopic assembly 3 enables the equipment to flexibly cope with steel drums of different sizes, increasing the scope of application of the equipment. The driving assembly 4 is connected to the bracket 1 by sliding, so that the driving force can be transmitted to the transmission assembly 5 more smoothly. This connection method ensures the stable operation of the transmission component 5, thereby ensuring the uniformity and efficiency of the spraying process. The transmission component 5 is connected to the sliding component 2 by an external sliding method. This design allows the transmission component 5 to operate smoothly and accurately when rotating the steel drum, ensuring the uniform rotation of the steel drum during the spraying process. The spraying component 6 is fixed to the top of the bracket 1 away from the driving component 4. This fixing method makes the position of the spraying component 6 stable during operation. The fixing seat 1 201 and the fixing seat 2 203 are respectively fixed to the top of the bracket 1, and the cylinder 202 connects the two fixing seats. This design structure makes the sliding component 2 more stable when bearing the load brought by the transmission component 5, while maintaining its sliding flexibility;

[0031] The telescopic assembly 3 includes an electric telescopic rod 301, a connecting block 302, and a connecting rod 303. One end of the electric telescopic rod 301 is fixedly connected to the connecting block 302, and one end of the connecting block 302 away from the electric telescopic rod 301 is fixedly connected to one of the connecting rods 303. The driving end of the electric telescopic rod 301 is fixedly connected to another connecting rod 303. One end of the electric telescopic rod 301 is fixedly connected to the connecting block 302. As a driving force source, the electric telescopic rod 301 can accurately control its length of extension or shortening, thereby achieving precise position adjustment or force transmission. The connecting block 302 serves as a fixed point to provide stability and transmit the movement or force of the electric telescopic rod 301 to the entire mechanism. The other end of the connecting block 302 away from the electric telescopic rod 301 is fixedly connected to one of the connecting rods 303. This design allows the connecting rod 303 to move or adjust its position as the electric telescopic rod 301 is extended and retracted, and the driving end of the electric telescopic rod 301 is fixedly connected to another connecting rod 303. This connection mode enables the electric telescopic rod 301 to directly drive the connecting rod 303, providing power and control for realizing more complex mechanical movements or precise position control;

[0032] The transmission component 5 includes a guide rail 501, a roller shaft 1 502, and a roller shaft 2 503. Two guide rails 501 are provided. The insides of the two guide rails 501 are both slidably connected to the cylinder 202, and the bottom ends of the two guide rails 501 are both slidably connected to the bracket 1. The roller shaft 1 502 is rotatably connected to one of the guide rails 501, and the outside of the roller shaft 2 503 is rotatably connected to the other guide rail 501. The guide rail 501 can slide smoothly around the cylinder 202. Such a sliding connection reduces friction and wear during movement and extends the service life of the component. At the same time, the coordinated use of the two guide rails 501 can better disperse the load and stabilize the transmitted objects, ensuring the accuracy and stability during the transmission process. By slidingly connecting the bottom end of the guide rail 501 to the bracket 1, the stability of the entire guide rail 501 system is guaranteed. This connection method allows the guide rail 501 to make slight position adjustments according to the load and movement requirements, thereby avoiding structural deformation or damage caused by improper fixation or long-term use. The rotational connection between the roller shaft and the guide rail 501 allows the roller to move smoothly along the guide rail 501. This design reduces friction during movement and improves the smoothness of movement. By setting a rotationally connected roller shaft on one guide rail 501, the stability and accuracy of conveying objects or forces can be ensured. The design of the second roller shaft 503 is similar to that of the first roller shaft 502. The second roller shaft 503 is externally rotationally connected to the other guide rail 501. The coordinated work of the two roller shafts ensures balance and precise alignment during the conveying process.

[0033] Embodiment 2

[0034] like Figure 2 - Figure 4 As shown, the driving assembly 4 includes a mounting seat 401, a motor 402, and a conveyor belt 403. One side of the mounting seat 401 is slidably connected to the bracket 1, the bottom end of the motor 402 is fixedly connected to the top of the mounting seat 401, and the driving end of the motor 402 is sleeved with a conveyor belt 403. The sliding connection design between the mounting seat 401 and the bracket 1 allows the mounting seat 401 to be adjusted on the bracket 1 to adapt to different operating requirements. The fixed connection between the motor 402 and the mounting seat 401 ensures the stability and safety of the motor 402. The conveyor belt 403 is sleeved on the driving end of the motor 402 to convert the power of the motor 402 into power that can be used to drive other mechanical components, thereby improving the efficiency and reliability of power transmission.

[0035] The spray assembly 6 includes a base 601, a rotating column 602, and a spray head 603. The bottom end of the base 601 is fixedly connected to the top end of the bracket 1. The outside of the rotating column 602 is rotatably connected to the top end of the base 601. One end of the spray head 603 is mounted on the rotating column 602. The fixed connection between the base 601 and the bracket 1 provides a stable foundation for the entire spray assembly 6. This fixed connection ensures the stability and safety of the base 601 during the spraying process, and prevents displacement or tilting due to equipment vibration or external force. The rotating connection of the rotating column 602 allows the spray head 603 to rotate at different angles, which provides flexibility for the spraying operation. The spray head 603 is mounted on the rotating column 602, which allows the spraying direction to change with the rotation of the rotating column 602, thereby achieving more precise spraying control.

[0036] The base 601 arranged in the spraying assembly 6 is used for spraying the surface of the steel barrel body 7 to be sprayed. The spraying assembly 6 arranged on the conveying assembly 5 is used for conveying the steel barrel body 7. When the driving assembly 4 drives the conveying assembly 5 to move the steel barrel body 7 to the spraying area of ​​the spraying assembly 6, the spraying assembly 6 sprays the surface of the steel barrel body 7. The base 601 serves as the core support of the spraying assembly 6, providing stability and precise positioning capability for the spraying process. Such stability is the key to achieving a uniform coating. The spraying assembly 6 is arranged on the conveying assembly 5, so that the steel barrel can be sprayed continuously or on demand during movement, thereby improving the spraying efficiency and flexibility. The introduction of the driving assembly 4 ensures the smooth movement of the steel barrel during the conveying process, which is crucial to avoiding unevenness during the spraying process. When the steel barrel moves to the spraying area, the spraying assembly 6 can effectively cover its surface.

[0037] Working principle: Figure 1-Figure 4As shown, first, the electric telescopic rod 301 achieves precise position adjustment or force transmission by precisely controlling the extension and retraction of the connecting rod 303. At the same time, when the electric telescopic rod 301 is extended and retracted, the two guide rails 501 are slidably connected to the cylinder 202, and the bottom end of the guide rail 501 is slidably connected to the bracket 1 to achieve precise position adjustment or force transmission, thereby adapting to steel barrel bodies 7 of different sizes. The guide rail 501 slides smoothly around the sliding component 2 to reduce friction and wear, while ensuring the accuracy and Stability, then start the motor 402 to drive the conveyor belt 403 to rotate, and then drive the roller shaft 1 502 to rotate on the guide rail 501. When the steel barrel body 7 is conveyed on the guide rail 501, the roller shaft 2 503 will rotate on the guide rail 501 at the same time to reduce friction and wear, while ensuring the accuracy and stability of the conveying process. When the steel barrel body 7 is transferred to the spraying area, the nozzle 603 is rotated on the rotating column 602 to adjust the angle of the nozzle 603 and spray the steel barrel body 7.

[0038] 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 spraying device for refurbishing the anti-rust layer on the surface of a steel drum, comprising a bracket (1), characterized in that: Both sides of the top of the bracket (1) are fixedly connected to sliding components (2), both sides of the bracket (1) are fixedly connected to telescopic components (3), one side of the bracket (1) is slidably connected to a driving component (4), the outside of the sliding component (2) is slidably connected to a transmission component (5), the top of the bracket (1) away from the driving component (4) is fixedly connected to a spraying component (6), and the top of the transmission component (5) is provided with a steel barrel body (7); The sliding assembly (2) comprises a fixing seat 1 (201), a cylinder (202), and a fixing seat 2 (203); the bottom end of the fixing seat 1 (201) is fixedly connected to the top end of the bracket (1); the bottom end of the fixing seat 2 (203) is fixedly connected to the top end of the bracket (1); one end of the cylinder (202) is fixedly connected to the fixing seat 1 (201); and the other end of the cylinder (202) is fixedly connected to the fixing seat 2 (203).

2. The spraying equipment for refurbishing the anti-rust layer on the surface of a steel drum according to claim 1 is characterized in that: The telescopic assembly (3) comprises an electric telescopic rod (301), a connecting block (302), and a connecting rod (303); one end of the electric telescopic rod (301) is fixedly connected to the connecting block (302); one end of the connecting block (302) away from the electric telescopic rod (301) is fixedly connected to one of the connecting rods (303); and a driving end of the electric telescopic rod (301) is fixedly connected to the other connecting rod (303).

3. The spraying equipment for refurbishing the anti-rust layer on the surface of a steel drum according to claim 1 is characterized in that: The driving assembly (4) comprises a mounting seat (401), a motor (402), and a conveyor belt (403); one side of the mounting seat (401) is slidably connected to the bracket (1); the bottom end of the motor (402) is fixedly connected to the top end of the mounting seat (401); and the driving end of the motor (402) is sleeved with the conveyor belt (403).

4. The spraying equipment for refurbishing the anti-rust layer on the surface of a steel drum according to claim 1 is characterized in that: The transmission assembly (5) comprises a guide rail (501), a roller shaft 1 (502), and a roller shaft 2 (503). Two guide rails (501) are provided, the insides of the two guide rails (501) are slidably connected to the cylinder (202), the bottom ends of the two guide rails (501) are slidably connected to the bracket (1), the roller shaft 1 (502) is rotatably connected to one of the guide rails (501), and the outside of the roller shaft 2 (503) is rotatably connected to the other guide rail (501).

5. The spraying equipment for refurbishing the anti-rust layer on the surface of a steel drum according to claim 1 is characterized in that: The spraying assembly (6) comprises a base (601), a rotating column (602), and a spray head (603); the bottom end of the base (601) is fixedly connected to the top end of the bracket (1); the outside of the rotating column (602) is rotatably connected to the top end of the base (601); and one end of the spray head (603) is mounted on the rotating column (602).

6. The spraying equipment for refurbishing the anti-rust layer on the surface of a steel drum according to claim 5 is characterized in that: The base (601) arranged in the spraying assembly (6) is used to spray the surface of the steel barrel body (7) to be sprayed, and the spraying assembly (6) arranged on the conveying assembly (5) is used to convey the steel barrel body (7), wherein when the driving assembly (4) drives the conveying assembly (5) to move the steel barrel body (7) to the spraying area of ​​the spraying assembly (6), the spraying assembly (6) sprays the surface of the steel barrel body (7).

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