Power tube surface coating device

Abstract

The invention discloses a power tube surface coating device, and belongs to power tube coating equipment, the power tube surface coating device comprises a workbench, a material guiding frame, a material placing assembly, a clamping assembly and a coating assembly, the material guiding frame, the material placing assembly, the clamping assembly and the coating assembly are all arranged on the workbench, and the workbench is provided with a through hole for a power tube to penetrate through; the discharging assembly comprises two first sliding seats and two first power parts, and the two first sliding seats and the two first power parts are arranged on the two sides of the through hole correspondingly. Through arrangement of the material guiding frame, the clamping assembly and the coating assembly, when an electric power pipe falls between the two first sliding seats, the two ends of the electric power pipe are clamped through clamping columns firstly, and then the electric power pipe falls into the position between the two first sliding seats; and the driving piece drives the sliding block and the electric power pipe to move upwards so as to abut against the coating roller, so that coating treatment can be completed in the rotating process of the electric power pipe, and meanwhile, a thermal medium is introduced into the electric power pipe through the air inlet pipe, so that the coating on the surface of the electric power pipe is cured.

Description

Technical Field

[0001] The invention discloses a surface coating device for an electric power pipe, belonging to the technical field of electric power pipe coating equipment. Background Art

[0002] Electric pipes are usually used as cable protection pipes and are widely used in urban power grid construction and transformation, urban municipal transformation projects, civil aviation airport engineering construction, engineering parks, community engineering construction, transportation, road and bridge engineering construction, and urban street light cable laying. They also play a guiding and protective role. When laying cables under green belts, sidewalks, residential areas, and non-driving lanes of industrial and mining enterprises, it is necessary to set electric pipes on the outside of the cables and bury them underground for power transmission. In order to protect the cables, the electric pipes are usually required to have good corrosion resistance and aging resistance. Therefore, after the production of the electric pipes is completed, a layer of aging-resistant or corrosion-resistant coating needs to be coated on their surface. After the corresponding functional coating is formed, the service life of the electric pipes can be significantly improved. The existing electric pipe coatings mostly rely on manual operation. During the coating process, the electric pipes need to be kept in a suspended state and heated and cured. Since the two processes cannot be well connected, multiple electric pipes cannot be continuously and automatically coated, resulting in low overall coating efficiency and the coating quality cannot be effectively guaranteed. Summary of the invention

[0003] The purpose of the present invention is to solve the problems in the prior art and to provide a surface coating device for an electric power pipe.

[0004] The present invention achieves the above-mentioned purpose through the following technical scheme: a surface coating device for an electric tube, comprising a workbench, a material guide rack, a material discharge assembly, a clamping assembly and a coating assembly, wherein the material guide rack, the material discharge assembly, the clamping assembly and the coating assembly are all arranged on the workbench, and the workbench is provided with a through hole for the power tube to pass through, the material discharge assembly comprises a first sliding seat and a first power member, and the first sliding seat and the first power member are both provided with two and are respectively arranged on both sides of the through hole, the first power member is arranged on the workbench, and is used to drive the first sliding seat to slide toward or away from the through hole, and a guide slope is provided on the side where the two first sliding seats are close to each other, and the extended surfaces of the two guide slopes intersect to form a V-shaped groove for supporting the electric tube, the clamping assembly is provided with two groups, which are symmetrically arranged on both sides of the material discharge assembly, the clamping assembly comprises a second sliding seat, a slider, a clamping column and a first cylinder, the first The second sliding seat is slidably arranged on the workbench, the first cylinder is fixed under the workbench, and its piston is fixedly connected to the second sliding seat, the sliding directions of the second sliding seat and the first sliding seat are arranged vertically, the clamping column is rotatably mounted on the sliding block, and an air guide hole is arranged in the clamping column, the clamping column is a stepped shaft structure, and an air intake pipe is connected to the end of the clamping column away from the first sliding seat, the sliding block is slidably arranged on the second sliding seat, and a driving member is arranged between the second sliding seat and the sliding block. When the clamping column contacts the power pipe, the driving member drives the sliding block to move upward during the process of the second sliding seat sliding toward the power pipe, the sliding block is also provided with a second power member for driving the clamping column to rotate, the coating assembly is located above the first sliding seat, the guide frame has a through groove for placing the power pipe, the through groove has an inclined angle with the horizontal plane, and the guide frame is provided with a control component for controlling the single feeding of the power pipe.

[0005] Preferably, the first power member includes a second cylinder, a fixed plate and a first guide rod, two first guide rods are provided, and one end of each first guide rod is fixed to a first sliding seat, the fixed plate is fixedly mounted on a workbench, the second cylinder is fixed to the fixed plate, and the piston of the second cylinder is fixedly connected to the first sliding seat, and one end of the first guide rod is slidably arranged with the fixed plate.

[0006] Preferably, the second power member includes a first motor, a driving pulley, a driven pulley and a belt, the first motor is fixed on a slider, the driving pulley is fixed on an output shaft of the first motor, the driven pulley is fixed on a clamping column, and the belt is sleeved on the outside of the driving pulley and the driven pulley.

[0007] Preferably, the driving member includes a second guide rod, a spring and a wedge block, the wedge block is arranged on the second sliding seat, and the wedge block is slidably arranged with the slider, the wedge block is provided with a wedge surface cooperating with the slider, the second guide rod and the spring are each provided with two, bosses are provided on both sides of the second sliding seat, the slider is slidably arranged between the two bosses, the second guide rod is fixedly connected with the slider after passing through one of the bosses, the spring is sleeved on the second guide rod, and the spring applies a force to the slider to resist the other boss, and one of the bosses is provided with a sliding groove for the second guide rod to slide vertically.

[0008] Preferably, a gasket is provided on the second guide rod, and the two ends of the spring are respectively in contact with the gasket and the slider, and the second sliding seat is also provided with a limiting bolt for limiting the relative sliding distance between the slider and the second sliding seat.

[0009] Preferably, the coating assembly includes a hopper and a coating roller, the hopper contains fluid coating, and the bottom of the hopper is a conical hopper structure, the coating roller is rotatably mounted at the discharge port of the hopper, and the coating roller is located directly above the through hole.

[0010] Preferably, the control component includes a second motor, a transmission shaft, a fixed seat, a gear, a first rack and a second rack, and the fixed seat, gear, first rack and second rack are each provided with two gears, the gear is fixed on the transmission shaft, both ends of the transmission shaft are rotatably connected to the two fixed seats, and the transmission shaft is fixedly connected to the output shaft of the second motor, the first rack and the second rack are slidably arranged in the fixed seat, the first rack and the second rack are located on both sides of the gear, and one end of the first rack and the second rack passes through the guide frame and extends into the through groove, the gear is meshed with the first rack and the second rack for transmission, and the fixed seat is fixedly connected to the guide frame by bolts.

[0011] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting up a material guide rack, a material discharge assembly, a clamping assembly and a coating assembly, the power pipes can fall from the material guide rack to the material discharge assembly one by one, and the clamping assembly clamps the two ends of the power pipe, and at the same time drives the power pipe upward to hit the coating roller. When the second power member drives the power pipe to rotate, the coating roller can rotate synchronously, so that a layer of paint can be coated on the surface of the power pipe.

[0012] 2. By setting up an air inlet pipe, a heat medium can be introduced to heat the power pipe, so that the coating on the surface of the power pipe is cured. During the coating and curing process, the power pipe does not contact the first sliding seat, thereby effectively ensuring the quality of the coating. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1This is a schematic structural diagram of a surface coating device for a power pipe according to the present invention; Figure 2 It is a structural schematic diagram of the first power member and the first sliding seat in the present invention; Figure 3 It is a schematic diagram of the structure of the clamping assembly in the present invention; Figure 4 It is a schematic diagram of the structure of the coating component in the present invention; Figure 5 It is a structural schematic diagram of the material guide rack and the control assembly in the present invention; Figure 6 It is a partial structural schematic diagram of the control component and the power tube in the present invention; Figure numerals: 1, workbench; 2, first power member; 3, first sliding seat; 4, through hole; 5, second power member; 6, clamping assembly; 7, guide rack; 8, control assembly; 9, power pipe; 10, coating assembly; 11, first guide rod; 12, second cylinder; 13, fixing plate; 14, guide slope; 15, first cylinder; 16, spring; 17, second guide rod; 18, gasket; 19, slide groove; 20, air intake pipe; 2 1. Wedge-shaped surface; 22. Driven pulley; 23. Belt; 24. Air guide hole; 25. Clamping column; 26. First motor; 27. Sliding block; 28. Driving pulley; 29. ​​Wedge block; 30. Limit bolt; 31. Second sliding seat; 32. Hopper; 33. Coating roller; 34. Second motor; 35. Fixed seat; 36. Boss; 37. Transmission shaft; 38. Through slot; 39. Second rack; 40. First rack; 41. Gear. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0015] like Figure 1-Figure 6As shown, a surface coating device for an electric tube comprises a workbench 1, a material guide rack 7, a material discharge assembly, a clamping assembly 6 and a coating assembly 10. The material guide rack 7, the material discharge assembly, the clamping assembly 6 and the coating assembly 10 are all arranged on the workbench 1. The workbench 1 is provided with a through hole 4 for the electric tube 9 to pass through. The material discharge assembly comprises a first sliding seat 3 and a first power member 2. Two first sliding seats 3 and first power members 2 are provided and are respectively provided on both sides of the through hole 4. The first power member 2 is provided on the workbench 1 and is used to drive the first sliding seat 3 to slide toward or away from the through hole 4. A guide slope 14 is provided on the side where the two first sliding seats 3 are close to each other. The extended surfaces of the two guide slopes 14 intersect to form a V-shaped groove for supporting the electric tube 9. The clamping assembly 6 comprises two groups, which are symmetrically arranged on both sides of the material discharge assembly. The clamping assembly 6 comprises a second sliding seat 31, a slider 27, a clamping column 25 and a first cylinder 15. The second sliding seat 31 is slidably provided on the workbench 1 The first cylinder 15 is fixed below the workbench 1, and its piston is fixedly connected to the second sliding seat 31. The sliding directions of the second sliding seat 31 and the first sliding seat 3 are arranged vertically. The clamping column 25 is rotatably mounted on the slider 27, and an air guide hole 24 is arranged in the clamping column 25. The clamping column 25 is a stepped shaft structure, and an end thereof away from the first sliding seat 3 is connected with the air inlet pipe 20. The slider 27 is slidably arranged on the second sliding seat 31. A driving member is arranged between the second sliding seat 31 and the slider 27. When the clamping column 25 contacts the power tube 9, the driving member drives the slider 27 to move upward during the sliding process of the second sliding seat 31 toward the power tube 9. The slider 27 is also provided with a second power member 5 for driving the clamping column 25 to rotate. The coating assembly 10 is located above the first sliding seat 3. The guide frame 7 has a through slot 38 for placing the power tube 9. The through slot 38 has an inclined angle with the horizontal plane. The guide frame 7 is provided with a control assembly 8 for controlling the single feeding of the power tube 9.

[0016] The first power member 2 includes a second cylinder 12, a fixed plate 13 and a first guide rod 11. Two first guide rods 11 are provided, and one end of the first guide rod 11 is fixed on the first sliding seat 3. The fixed plate 13 is fixedly installed on the workbench 1. The second cylinder 12 is fixed on the fixed plate 13, and the piston of the second cylinder 12 is fixedly connected to the first sliding seat 3. One end of the first guide rod 11 is slidably arranged with the fixed plate 13. The first cylinder 15 can drive the first sliding seat 3 to slide horizontally reciprocatingly. The first guide rod 11 can guide the sliding of the first sliding seat 3. When the distance between the two first sliding seats 3 is in the minimum state, the electric tube 9 can be supported and positioned by relying on the guiding inclined surfaces 14 on the surfaces of the two. After the coating of the electric tube 9 is completed, when the two first sliding seats 3 slide in a direction away from each other, when the distance between the two is greater than the diameter of the electric tube 9, the electric tube 9 can automatically fall from the through hole 4, thereby realizing automatic blanking and facilitating the coating of the next electric tube 9.

[0017] The second power member 5 includes a first motor 26, a driving pulley 28, a driven pulley 22 and a belt 23. The first motor 26 is fixed on a slider 27, the driving pulley 28 is fixed on an output shaft of the first motor 26, the driven pulley 22 is fixed on a clamping column 25, and the belt 23 is sleeved on the outer sides of the driving pulley 28 and the driven pulley 22. The first motor 26 drives the driving pulley 28 to rotate, and the belt 23 and the driven pulley 22 can drive the clamping column 25 to rotate synchronously. In this way, after the two clamping columns 25 clamp the power tube 9, the power tube 9 can be driven to rotate. In this way, the friction force between the power tube 9 and the coating roller 33 can be used to drive the coating roller 33 to rotate, so that the coating roller 33 can apply the fluid coating on the surface of the power tube 9 during the rotation process, thereby completing the coating process.

[0018] The driving member includes a second guide rod 17, a spring 16 and a wedge block 29. The wedge block 29 is arranged on the second sliding seat 31, and the wedge block 29 is slidably arranged with the slider 27. The wedge block 29 is provided with a wedge surface 21 that cooperates with the slider 27. The second guide rod 17 and the spring 16 are both provided with two. Bosses 36 are provided on both sides of the second sliding seat 31. The slider 27 is slidably arranged between the two bosses 36. The second guide rod 17 passes through one of the bosses 36 and is fixedly connected to the slider 27. The spring 16 is sleeved on the second guide rod 17, and the spring 16 applies a force to the slider 27 that resists the other boss 36. A slide groove 19 for the second guide rod 17 to slide vertically is provided on one of the bosses 36. When the first cylinder 15 drives the second sliding seat 31 to slide toward the power tube 9, the slider 27 remains in contact with the second sliding seat under the action of the spring 16. 31 slide synchronously. When the two clamping columns 25 clamp the power tube 9, the clamping column 25 cannot move further, while the second sliding seat 31 can continue to slide. At this time, the spring 16 is further compressed, so that the second sliding seat 31 and the slider 27 move relative to each other, and the matching position of the wedge block 29 and the slider 27 also changes. The slider 27 moves upward by relying on the wedge surface 21, and the second guide rod 17 slides in the slide groove 19, thereby guiding and positioning the slider 27 to slide upward. During the upward movement, the slider 27 drives the clamping columns 25 to move synchronously, so that the two clamping columns 25 can drive the power tube 9 to move upward and make the power tube 9 conflict with the coating roller 33. At the same time, the power tube 9 no longer contacts the guide slope 14, so that the power tube 9 will not be scratched during the subsequent coating process, thereby ensuring the quality of the coating of the power tube 9.

[0019] A gasket 18 is provided on the second guide rod 17, and the two ends of the spring 16 are respectively in contact with the gasket 18 and the slider 27. A limiting bolt 30 for limiting the relative sliding distance between the slider 27 and the second sliding seat 31 is also provided on the second sliding seat 31. The limiting bolt 30 can limit the sliding distance of the slider 27 on the second sliding seat 31, thereby indirectly controlling the upward moving distance of the slider 27, so that the power tube 9 can smoothly contact with the coating roller 33.

[0020] The coating assembly 10 includes a hopper 32 and a coating roller 33. The hopper 32 contains fluid coating, and the bottom of the hopper 32 is a conical hopper structure. The coating roller 33 is rotatably installed at the discharge port of the hopper 32, and the coating roller 33 is located directly above the through hole 4. In the process of the second power member 5 driving the power tube 9 to rotate, the coating roller 33 relies on the friction between it and the power tube 9 to maintain synchronous rotation, so that the coating roller 33 can smoothly apply the fluid coating to the power tube 9, thereby successfully completing the coating process.

[0021] The control assembly 8 includes a second motor 34, a transmission shaft 37, a fixed seat 35, a gear 41, a first rack 40 and a second rack 39. The fixed seat 35, the gear 41, the first rack 40 and the second rack 39 are all provided with two. The gear 41 is fixed on the transmission shaft 37. Both ends of the transmission shaft 37 are rotatably connected with the two fixed seats 35, and the transmission shaft 37 is fixedly connected with the output shaft of the second motor 34. The first rack 40 and the second rack 39 are slidably arranged in the fixed seat 35. The first rack 40 and the second rack 39 are located on both sides of the gear 41, and one end of the first rack 40 and the second rack 39 passes through the guide frame 7 and extends into the through groove 38. The gear 41 is meshed with the first rack 40 and the second rack 39 for transmission. The fixed seat 35 is fixedly connected to the guide frame 7 by bolts. When the control assembly 8 is installed on the guide frame 7, the first rack 40 has a blocking effect on the sliding of the power tube 9, and the second rack The rack 39 is in a state of not blocking the sliding of the power tube 9. When the second motor 34 drives the transmission shaft 37 and the gear 41 to rotate clockwise, the second rack 39 slides downward under the drive of the gear 41 and blocks the sliding of the power tube 9, while the first rack 40 slides upward under the drive of the gear 41 and releases the blockage of the power tube 9, so that the power tube 9 located at the bottom slides along the through groove 38 to between the first rack 40 and the second rack 39 by gravity. When the second motor 34 drives the transmission shaft 37 and the gear 41 to rotate in the opposite direction, the first rack 40 moves downward, and the lower end of the first rack 40 is inserted between the two power tubes 9, and continues to block the power tube 9 on one side of the first rack 40, while the second rack 39 slides upward, so that the power tube 9 located at the bottom can smoothly fall between the two first sliding seats 3, so that automatic loading of the power tube 9 can be realized.

[0022] Working principle: When coating the electric tube 9, the control component 8 loads the electric tube 9 in the guide rack 7 one by one, and allows the electric tube 9 to fall smoothly between the two first sliding seats 3. The two first sliding seats 3 position and support the electric tube 9, and then the first cylinder 15 drives the two second sliding seats 31 to approach each other, and relies on the slider 27 and the clamping column 25 to clamp the two ends of the electric tube 9. At the same time, as the second sliding seat 31 continues to slide, the wedge block 29 drives the slider 27 and the clamping column 25 to move upward, so that the electric tube 9 is released from the guide slope 14 and finally collides with the coating roller 33. At this time, the second power member 5 drives the electric tube 9 and the coating roller 33 to rotate, so that the coating roller 33 applies the fluid coating to the surface of the electric tube 9. When the coating is completed, the first cylinder 15 moves in the direction of the second sliding seat 31. A short distance allows the slider 27 to drive the clamping column 25 and the power tube 9 to descend, so that the power tube 9 remains detached from the coating roller 33 and the guide ramp 14 at the same time, and then a heat medium is introduced into the air inlet pipe 20, enters the power tube 9 through the air guide hole 24, and heats the power tube 9, thereby curing the paint on the surface of the power tube 9, and then the first cylinder 15 drives the first sliding seat 3 to reset, and allows the clamping column 25 to release the clamping of the power tube 9, and then the first power member 2 drives the two first sliding seats 3 to slide in opposite directions, so that the power tube 9 falls smoothly from the through hole 4, and the entire coating process of the power tube 9 can be completed in this way. This method gets rid of the tedious manual operation, and combines the coating and curing processes together, which can effectively save the equipment's floor space and improve the coating efficiency of the power tube 9.

[0023] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0024] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A surface coating device for an electric power pipe, comprising a workbench (1), a material guide rack (7), a material discharge assembly, a clamping assembly (6) and a coating assembly (10), characterized in that: The material guide frame (7), the material discharge assembly, the clamping assembly (6) and the coating assembly (10) are all arranged on a workbench (1); the workbench (1) is provided with a through hole (4) for the power tube (9) to pass through; the material discharge assembly comprises a first sliding seat (3) and a first power member (2); two of the first sliding seat (3) and the first power member (2) are provided and are respectively arranged on both sides of the through hole (4); the first power member (2) is arranged on the workbench (1) and is used to drive the first sliding seat (3) to slide in a direction close to or away from the through hole (4); the two A guide slope (14) is provided on one side of the first sliding seat (3) close to each other, and the extended surfaces of the two guide slopes (14) intersect to form a V-shaped groove for supporting the power tube (9). The clamping assembly (6) is provided with two groups, which are symmetrically arranged on both sides of the discharge assembly. The clamping assembly (6) includes a second sliding seat (31), a slider (27), a clamping column (25) and a first cylinder (15). The second sliding seat (31) is slidably arranged on the workbench (1), and the first cylinder (15) is fixed below the workbench (1), and its piston is connected to the workbench (1). The second sliding seat (31) is fixedly connected, and the sliding directions of the second sliding seat (31) and the first sliding seat (3) are arranged perpendicularly. The clamping column (25) is rotatably mounted on the slider (27), and an air guide hole (24) is arranged in the clamping column (25). The clamping column (25) is a stepped shaft structure, and an end thereof away from the first sliding seat (3) is connected to an air intake pipe (20). The slider (27) is slidably arranged on the second sliding seat (31), and a driving member is arranged between the second sliding seat (31) and the slider (27). When the clamping column (25) abuts against the slider (27), a driving member is arranged between the second sliding seat (31) and the slider (27). When the power tube (9) is touched, the second sliding seat (31) slides toward the power tube (9), and the driving member drives the slider (27) to move upward. The slider (27) is also provided with a second power member (5) for driving the clamping column (25) to rotate. The coating component (10) is located above the first sliding seat (3). The material guide frame (7) has a through groove (38) for placing the power tube (9), and the through groove (38) has an inclined angle with the horizontal plane. The material guide frame (7) is provided with a control component (8) for controlling the single feeding of the power tube (9).

2. The surface coating device of a power pipe according to claim 1, characterized in that: The first power member (2) comprises a second cylinder (12), a fixed plate (13) and a first guide rod (11); two first guide rods (11) are provided, and one end of each first guide rod is fixed to the first sliding seat (3); the fixed plate (13) is fixedly mounted on the workbench (1); the second cylinder (12) is fixed to the fixed plate (13); a piston of the second cylinder (12) is fixedly connected to the first sliding seat (3); and one end of the first guide rod (11) is slidably arranged with the fixed plate (13).

3. The surface coating device of a power pipe according to claim 1, characterized in that: The second power member (5) comprises a first motor (26), a driving pulley (28), a driven pulley (22) and a belt (23); the first motor (26) is fixed on a slider (27); the driving pulley (28) is fixed on an output shaft of the first motor (26); the driven pulley (22) is fixed on a clamping column (25); and the belt (23) is sleeved on the outside of the driving pulley (28) and the driven pulley (22).

4. The surface coating device of a power pipe according to claim 1, characterized in that: The driving member comprises a second guide rod (17), a spring (16) and a wedge block (29); the wedge block (29) is arranged on the second sliding seat (31), and the wedge block (29) and the slider (27) are slidably arranged; the wedge block (29) is provided with a wedge surface (21) that cooperates with the slider (27); the second guide rod (17) and the spring (16) are both provided with two; bosses (36) are provided on both sides of the second sliding seat (31); the slider (27) is slidably arranged between the two bosses (36); the second guide rod (17) passes through one of the bosses (36) and is fixedly connected to the slider (27); the spring (16) is sleeved on the second guide rod (17), and the spring (16) applies a force to the slider (27) to resist the other boss (36); one of the bosses (36) is provided with a slide groove (19) for the second guide rod (17) to slide vertically.

5. The surface coating device of a power pipe according to claim 4, characterized in that: A gasket (18) is provided on the second guide rod (17), and two ends of the spring (16) are respectively in contact with the gasket (18) and the slider (27), and a limiting bolt (30) for limiting the relative sliding distance between the slider (27) and the second sliding seat (31) is also provided on the second sliding seat (31).

6. The surface coating device for electric power pipe according to claim 1, characterized in that: The coating assembly (10) comprises a hopper (32) and a coating roller (33); the hopper (32) contains fluid coating, and the bottom of the hopper (32) is a conical hopper structure; the coating roller (33) is rotatably mounted at the discharge port of the hopper (32), and the coating roller (33) is located directly above the through hole (4).

7. The surface coating device for electric power pipe according to claim 1, characterized in that: The control assembly (8) comprises a second motor (34), a transmission shaft (37), a fixed seat (35), a gear (41), a first rack (40) and a second rack (39), wherein the fixed seat (35), the gear (41), the first rack (40) and the second rack (39) are each provided with two, the gear (41) is fixed on the transmission shaft (37), the two ends of the transmission shaft (37) are rotatably connected to the two fixed seats (35), and the transmission shaft (37) is rotatably connected to the transmission shaft of the second motor (34). The output shaft is fixedly connected, the first rack (40) and the second rack (39) are slidably arranged in the fixed seat (35), the first rack (40) and the second rack (39) are located on both sides of the gear (41), and one end of the first rack (40) and the second rack (39) passes through the guide frame (7) and extends into the through groove (38), the gear (41) is meshed with the first rack (40) and the second rack (39) for transmission, and the fixed seat (35) is fixedly connected to the guide frame (7) by bolts.

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