Electrical conduit surface coating apparatus

Abstract

The utility model discloses a power pipe surface coating device belongs to power pipe coating equipment, including workbench, guide material frame, material placing subassembly, clamping subassembly and coating subassembly, guide material frame, material placing subassembly, clamping subassembly and coating subassembly all are arranged on workbench, and workbench is provided with the through -hole that power pipe passes, and material placing subassembly includes first sliding seat and first power part, and first sliding seat and first power part all are provided with two, and are respectively arranged in both sides of through -hole, the utility model discloses a guide material frame, clamping subassembly and coating subassembly make power pipe when falling between two first sliding seats, first by clamping the both ends of power pipe tightly, and rely on driving piece to drive the slider and power pipe to move upward to the coating roll, so when power pipe in the process of rotating can complete coating treatment, and rely on the hot medium of air inlet pipe into power pipe to the coating solidification of power pipe surface.

Description

TECHNICAL FIELD

[0001] The application discloses a power pipe surface coating device and belongs to the technical field of power pipe coating equipment. BACKGROUND

[0002] Power pipes are usually used as cable protection pipes and are widely used in urban power grid construction and reconstruction, urban municipal reconstruction projects, civil aviation airport engineering construction, engineering park, community engineering construction, traffic, road and bridge engineering construction and urban street lamp cable laying and play a guiding and protective role. When laying cables under green belts, sidewalks, residential areas and non-vehicle lanes of industrial and mining enterprises, power pipes need to be sleeved outside the cables and buried underground for power transmission. In order to protect the cables, the power pipes are usually required to have good corrosion resistance and aging resistance. Therefore, after the production of the power pipes is completed, a layer of aging-resistant or corrosion-resistant paint needs to be coated on the surface of the power pipes. After the corresponding functional coating is formed, the service life of the power pipes can be obviously improved. However, the existing power pipe coating mostly depends on manual operation. The power pipes need to be kept in a suspended state and heated and solidified during the coating process. Since the two processes cannot be well connected, multiple power pipes cannot be continuously and automatically coated, leading to low overall coating efficiency and the coating quality cannot be effectively guaranteed. SUMMARY

[0003] The application aims to solve the problems in the prior art and provides a power pipe surface coating device.

[0004] The application achieves the above-mentioned purpose through the following technical scheme. The power pipe 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, the workbench is provided with a through hole through which the power pipe passes, the material placing assembly comprises a first sliding seat and a first power piece, the first sliding seat and the first power piece are both provided with two and are arranged on the two sides of the through hole respectively, the first power piece is arranged on the workbench and is used to drive the first sliding seat to slide towards the direction close to or away from the through hole, the side of the two first sliding seats close to each other is provided with a guide inclined surface, the extension surfaces of the two guide inclined surfaces intersect to form a V-shaped groove used for supporting the power pipe, the clamping assembly is provided with two groups and is symmetrically arranged on the two sides of the material placing assembly, the clamping assembly comprises a second sliding seat, a sliding block, a clamping column and a first air cylinder, the second sliding seat is slidingly arranged on the workbench, the first air cylinder is fixed below the workbench and the piston thereof is fixedly connected with the second sliding seat, the sliding directions of the second sliding seat and the first sliding seat are vertically arranged, the clamping column is rotatably installed on the sliding block and is provided with a gas guiding hole in the clamping column, the clamping column is in a stepped shaft structure and the end thereof away from the first sliding seat is connected with an air inlet pipe, the sliding block is slidingly arranged on the second sliding seat, a driving piece is arranged between the second sliding seat and the sliding block, when the clamping column abuts against the power pipe, the driving piece drives the sliding block to move upward in the process that the second sliding seat slides towards the power pipe, the sliding block is further provided with a second power piece used for driving the clamping column to rotate, the coating assembly is above the first sliding seat, the material guiding frame is provided with a through groove used for placing the power pipe, the through groove and the horizontal plane have an inclined angle, and the material guiding frame is provided with a control assembly used for controlling the single feeding of the power pipe.

[0005] Preferably, the first power piece comprises a second air cylinder, a fixed plate and a first guide rod, the first guide rod is provided with two and one end thereof is fixed on the first sliding seat, the fixed plate is fixedly installed on the workbench, the second air cylinder is fixed on the fixed plate and the piston of the second air cylinder is fixedly connected with the first sliding seat, and one end of the first guide rod is slidingly arranged with the fixed plate.

[0006] Preferably, the second power piece comprises a first motor, a driving pulley, a driven pulley and a belt, the first motor is fixed on the sliding block, the driving pulley is fixed on the output shaft of the first motor, the driven pulley is fixed on the clamping column, and the belt is sleeved outside the driving pulley and the driven pulley.

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

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

[0009] Preferably, the coating assembly comprises a hopper and a coating roller, the hopper contains fluid paint, and the lower part of the hopper is in a conical hopper structure, the coating roller is rotatably installed at the discharge port of the hopper, and the coating roller is located directly above the through hole.

[0010] Preferably, the control assembly comprises a second motor, a transmission shaft, a fixed seat, a gear, a first rack and a second rack, the fixed seat, the gear, the first rack and the second rack are all provided with two, the gear is fixed on the transmission shaft, the two ends of the transmission shaft are rotatably connected with the two fixed seats, and the transmission shaft is fixedly connected with 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 the two sides of the gear, and one end of the first rack and the second rack penetrates through the material guide frame and extends into the through groove, the gear is in meshing transmission with the first rack and the second rack, and the fixed seat is fixedly connected with the material guide frame through bolts.

[0011] Compared with the prior art, the present application has the following advantages:

[0012] 1. By arranging the material guide frame, the discharging assembly, the clamping assembly and the coating assembly, the electric power pipes can fall from the material guide frame to the discharging assembly one by one, and the two ends of the electric power pipes are clamped by the clamping assembly, and at the same time, the electric power pipes are driven upward to resist the coating roller, so that the coating roller can be driven to rotate synchronously when the second driving member drives the electric power pipes to rotate, and thus a layer of coating can be coated on the surface of the electric power pipes.

[0013] 2. By arranging the air inlet pipe, hot medium can be introduced into the air inlet pipe to heat the electric power pipes, so that the coating on the surface of the electric power pipes is solidified, and during the coating and solidification process, the electric power pipes are not in contact with the first sliding seat, thereby effectively ensuring the quality of the coating. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1It is a structural schematic view of the power pipe surface coating device of the present application.

[0015] Figure 2 It is a structural schematic view of the first power member and the first sliding seat in the present application.

[0016] Figure 3 It is a structural schematic view of the clamping assembly in the present application.

[0017] Figure 4 It is a structural schematic view of the coating assembly in the present application.

[0018] Figure 5 It is a structural schematic view of the material guiding frame and the control assembly in the present application.

[0019] Figure 6 It is a partial structural schematic view of the control assembly and the power pipe in the present application.

[0020] The reference signs: 1, workbench; 2, first power member; 3, first sliding seat; 4, through hole; 5, second power member; 6, clamping assembly; 7, material guiding frame; 8, control assembly; 9, power pipe; 10, coating assembly; 11, first guide rod; 12, second air cylinder; 13, fixed plate; 14, guide inclined surface; 15, first air cylinder; 16, spring; 17, second guide rod; 18, gasket; 19, sliding groove; 20, air inlet pipe; 21, wedge surface; 22, driven pulley; 23, belt; 24, air guiding hole; 25, clamping column; 26, first motor; 27, sliding block; 28, driving pulley; 29, wedge block; 30, limiting bolt; 31, second sliding seat; 32, hopper; 33, coating roller; 34, second motor; 35, fixed seat; 36, boss; 37, transmission shaft; 38, through groove; 39, second rack; 40, first rack; 41, gear. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0022] As Figures 1-6As shown, a power pipe surface coating device, including a workbench 1, a material guide frame 7, a feeding assembly, a clamping assembly 6 and a coating assembly 10, the material guide frame 7, the feeding 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 through which the power pipe 9 passes, the feeding assembly includes a first sliding seat 3 and a first power piece 2, the first sliding seat 3 and the first power piece 2 are both provided with two and are respectively arranged on both sides of the through hole 4, the first power piece 2 is arranged on the workbench 1 and is used to drive the first sliding seat 3 to slide towards the direction close to or away from the through hole 4, the side of the two first sliding seats 3 close to each other is provided with a guide slope 14, the extension surfaces of the two guide slopes 14 intersect to form a V-shaped groove for supporting the power pipe 9, the clamping assembly 6 is provided with two groups which are symmetrically arranged on both sides of the feeding assembly, the clamping assembly 6 includes a second sliding seat 31, a sliding block 27, a clamping column 25 and a first cylinder 15, the second sliding seat 31 is slidingly arranged on the workbench 1, the first cylinder 15 is fixed below the workbench 1 and the piston thereof is fixedly connected with the second sliding seat 31, the sliding directions of the second sliding seat 31 and the first sliding seat 3 are vertically arranged, the clamping column 25 is rotatably installed on the sliding block 27 and the clamping column 25 is provided with a gas guide hole 24 therein, the clamping column 25 is in a stepped shaft structure and the end thereof away from the first sliding seat 3 is connected with an air inlet pipe 20, the sliding block 27 is slidingly arranged on the second sliding seat 31, a driving piece is arranged between the second sliding seat 31 and the sliding block 27, when the clamping column 25 contacts the power pipe 9, the driving piece drives the sliding block 27 to move upward during the sliding process of the second sliding seat 31 towards the power pipe 9, the sliding block 27 is further provided with a second power piece 5 for driving the clamping column 25 to rotate, the coating assembly 10 is above the first sliding seat 3, the material guide frame 7 has a through groove 38 for placing the power pipe 9, the through groove 38 and the horizontal plane have an inclined angle, the material guide frame 7 is provided with a control assembly 8 for controlling the single feeding of the power pipe 9.

[0023] The first power piece 2 includes a second cylinder 12, a fixed plate 13 and a first guide rod 11, the first guide rod 11 is provided with two and one end thereof 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 with the first sliding seat 3, one end of the first guide rod 11 is slidingly arranged with the fixed plate 13, the first cylinder 15 can drive the first sliding seat 3 to horizontally reciprocate, 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 at the minimum state, the power pipe 9 can be supported and positioned by the guide slopes 14 on the surfaces of the two first sliding seats 3, when the coating of the power pipe 9 is finished, the two first sliding seats 3 slide away from each other, when the distance between the two first sliding seats 3 is greater than the diameter of the power pipe 9, the power pipe 9 can automatically fall from the through hole 4, so as to realize automatic feeding and facilitate the coating of the next power pipe 9.

[0024] 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 the sliding block 27, the driving pulley 28 is fixed on the output shaft of the first motor 26, the driven pulley 22 is fixed on the clamping column 25, the belt 23 is sleeved outside the driving pulley 28 and the driven pulley 22, the first motor 26 drives the driving pulley 28 to rotate, and the clamping column 25 can be driven to rotate synchronously by the belt 23 and the driven pulley 22, so that the power cable 9 can be driven to rotate after being clamped by the two clamping columns 25, and the coating roller 33 can be driven to rotate by the friction force of the power cable 9 abutting against the coating roller 33, so that the coating roller 33 can coat the fluid coating on the surface of the power cable 9 in the process of rotating, thereby completing the coating process.

[0025] 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 is in sliding connection with the sliding block 27, the wedge block 29 is provided with a wedge surface 21 matched with the sliding block 27, the second guide rod 17 and the spring 16 are both provided with two, the two sides of the second sliding seat 31 are provided with bosses 36, the sliding block 27 is arranged between the two bosses 36 in a sliding mode, the second guide rod 17 is fixedly connected with the sliding block 27 after penetrating through one of the bosses 36, the spring 16 is sleeved on the second guide rod 17 and exerts an abutting force on the sliding block 27 against the other boss 36, one of the bosses 36 is provided with a sliding groove 19 for vertical sliding of the second guide rod 17, when the first air cylinder 15 drives the second sliding seat 31 to slide towards the power cable 9, the sliding block 27 keeps sliding synchronously with the second sliding seat 31 under the action of the spring 16, when the two clamping columns 25 clamp the power cable 9, the clamping columns 25 cannot continue to move, but the second sliding seat 31 can continue to slide, at this time, the spring 16 is continuously compressed, the relative movement between the second sliding seat 31 and the sliding block 27 occurs, and the matching position of the wedge block 29 and the sliding block 27 also changes, the sliding block 27 moves upwards by means of the wedge surface 21, the second guide rod 17 slides in the sliding groove 19, thereby guiding and positioning the upward sliding of the sliding block 27, the sliding block 27 drives the clamping columns 25 to move synchronously in the process of moving upwards, so that the two clamping columns 25 can drive the power cable 9 to move upwards and abut against the coating roller 33, and the power cable 9 is no longer in contact with the guide inclined surface 14, so that the power cable 9 will not be scratched in the subsequent coating process, thereby ensuring the quality of the coating of the power cable 9.

[0026] The second guide rod 17 is provided with a gasket 18, and the two ends of the spring 16 abut against the gasket 18 and the sliding block 27 respectively. The second sliding seat 31 is further provided with a limiting bolt 30 for limiting the sliding distance of the sliding block 27 relative to the second sliding seat 31. The limiting bolt 30 can limit the sliding distance of the sliding block 27 on the second sliding seat 31, thereby indirectly controlling the distance of the upward movement of the sliding block 27, so that the power tube 9 can smoothly abut against the coating roller 33.

[0027] The coating assembly 10 comprises a hopper 32 and a coating roller 33. The hopper 32 contains fluid paint, and the lower part of the hopper 32 is in a conical structure. The coating roller 33 is rotatably installed at the discharge port of the hopper 32 and is located directly above the through hole 4. During the rotation of the power tube 9 driven by the second power member 5, the coating roller 33 is kept synchronous rotation by the friction force between the coating roller 33 and the power tube 9, so that the coating roller 33 can smoothly coat the fluid paint on the power tube 9, thereby smoothly completing the coating process.

[0028] 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. 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, the two 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 the two sides of the gear 41, and one end of the first rack 40 and the second rack 39 extends through the material guide frame 7 and into the through slot 38. The gear 41 is in meshing transmission with the first rack 40 and the second rack 39. The fixed seat 35 is fixedly connected with the material guide frame 7 by bolts. When the control assembly 8 is installed on the material guide frame 7, the first rack 40 has a blocking effect on the sliding of the power tube 9, while the second 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 unblocks the power tube 9, so that the power tube 9 at the lowermost position slides along the through slot 38 to between the first rack 40 and the second rack 39 under the action of gravity. When the second motor 34 drives the transmission shaft 37 and the gear 41 to rotate reversely, the first rack 40 moves downward at this time, 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 at the lowermost position can smoothly fall between the two first sliding seats 3. In this way, the automatic feeding of the power tube 9 can be realized.

[0029] Working principle: when coating the power tube 9, the control assembly 8 feeds the power tube 9 in the material guide frame 7 one by one, and makes the power tube 9 fall smoothly between the two first sliding seats 3, the two first sliding seats 3 position and support the power tube 9, then the first cylinder 15 drives the two second sliding seats 31 to move close to each other, and relies on the sliding block 27 and the clamping column 25 to clamp the two ends of the power tube 9, while the second sliding seat 31 continues to slide, the sliding block 27 and the clamping column 25 are driven by the wedge block 29 to move upwards, so that the power tube 9 is separated from the guide slope 14, and finally comes into contact with the coating roller 33, at this time the second power component 5 drives the power tube 9 and the coating roller 33 to rotate, so that the coating roller 33 coats the fluid coating on the surface of the power tube 9, when the coating is finished, the first cylinder 15 moves the second sliding seat 31 a small distance, so that the sliding block 27 drives the clamping column 25 and the power tube 9 to drop, so that the power tube 9 keeps the state of being separated from the coating roller 33 and the guide slope 14, then the hot medium is introduced into the air inlet pipe 20, enters the power tube 9 through the air guide hole 24, and makes the power tube 9 warm up, so as to solidify the coating on the surface of the power tube 9, then the first cylinder 15 drives the first sliding seat 3 to reset, and the clamping column 25 releases the clamping of the power tube 9, then the first power component 2 drives the two first sliding seats 3 to slide in the opposite direction, so that the power tube 9 falls smoothly from the through hole 4, so the whole coating process of the power tube 9 is completed, which gets rid of the tedious manual operation, and combines the coating and solidification processes together, which can effectively save the land occupation of the equipment, and improve the coating efficiency of the power tube 9.

[0030] It is apparent to those skilled in the art that the present application is not limited to the details of the foregoing exemplary embodiments, and that the present application can be implemented in other particular forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in a descriptive sense only, and not for purposes of limitation. The scope of the present application is defined by the appended claims rather than the foregoing description, and all changes that come within the meaning and range of equivalents of the claims are intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the scope of the claims.

[0031] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description manner of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be properly combined to form other embodiments that those skilled in the art can understand.

Claims

1. A power tube surface coating device comprising a workbench (1), a material guide frame (7), a material placing assembly, a clamping assembly (6) and a coating assembly (10), characterized in that, The material guide frame (7), the material placing assembly, the clamping assembly (6) and the coating assembly (10) are arranged on the workbench (1), the workbench (1) is provided with a through hole (4) through which the power supply pipe (9) passes, the material placing assembly comprises first sliding seats (3) and first power members (2), the first sliding seats (3) and the first power members (2) are both provided with two and are arranged on the two sides of the through hole (4) respectively, the first power members (2) are arranged on the workbench (1) and are used for driving the first sliding seats (3) to slide towards the direction close to or away from the through hole (4), the side, where the two first sliding seats (3) are close to each other, is provided with guide inclined surfaces (14), the extension planes of the two guide inclined surfaces (14) intersect to form a V-shaped groove for supporting the power supply pipe (9), the clamping assembly (6) is provided with two groups and is symmetrically arranged on the two sides of the material placing assembly, the clamping assembly (6) comprises second sliding seats (31), sliding blocks (27), clamping columns (25) and first air cylinders (15), the second sliding seats (31) are slidingly arranged on the workbench (1), the first air cylinders (15) are fixed below the workbench (1) and the pistons thereof are fixedly connected with the second sliding seats (31), the sliding directions of the second sliding seats (31) and the first sliding seats (3) are perpendicular, the clamping columns (25) are rotatably installed on the sliding blocks (27) and the clamping columns (25) are provided with air guide holes (24) therein, the clamping columns (25) have a stepped shaft structure and an end, away from the first sliding seats (3), of the clamping columns (25) is connected with an air inlet pipe (20), the sliding blocks (27) are slidingly arranged on the second sliding seats (31), driving members are arranged between the second sliding seats (31) and the sliding blocks (27), when the clamping columns (25) abut against the power supply pipe (9), in the process that the second sliding seats (31) slide towards the power supply pipe (9), the driving members drive the sliding blocks (27) to move upwards, the sliding blocks (27) are further provided with second power members (5) for driving the clamping columns (25) to rotate, the coating assembly (10) is located above the first sliding seats (3), the material guide frame (7) has a through groove (38) for placing the power supply pipe (9), the through groove (38) has an inclined angle with the horizontal plane, the material guide frame (7) is provided with a control assembly (8) for controlling single feeding of the power supply pipe (9), the driving members comprise second guide rods (17), springs (16) and wedge-shaped blocks (29), the wedge-shaped blocks (29) are arranged on the second sliding seats (31) and slidingly arranged with the sliding blocks (27), the wedge-shaped blocks (29) are provided with wedge-shaped surfaces (21) matched with the sliding blocks (27), the second guide rods (17) and the springs (16) are both provided with two, the second sliding seats (31) are both provided with bosses (36), the sliding blocks (27) are slidingly arranged between the two bosses (36), the second guide rods (17) are fixedly connected with the sliding blocks (27) after penetrating through one of the bosses (36),The spring (16) is sleeved on the second guide rod (17), and the spring (16) exerts a force on the sliding block (27) to resist the other boss (36), wherein one of the bosses (36) is provided with a sliding groove (19) for vertical sliding of the second guide rod (17).

2. An electrical conduit surface coating apparatus as defined in claim 1, wherein, The first power element (2) comprises a second cylinder (12), a fixed plate (13) and a first guide rod (11), 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 with the first sliding seat (3), and one end of the first guide rod (11) is slidably arranged on the fixed plate (13).

3. An electrical conduit surface coating apparatus as defined in claim 1, wherein, The second power element (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 the sliding block (27), the driving pulley (28) is fixed on the output shaft of the first motor (26), the driven pulley (22) is fixed on the clamping column (25), and the belt (23) is sleeved outside the driving pulley (28) and the driven pulley (22).

4. An electrical conduit surface coating apparatus as defined in claim 1, wherein, The second guide rod (17) is provided with a gasket (18), and the two ends of the spring (16) are respectively in contact with the gasket (18) and the sliding block (27), and the second sliding seat (31) is further provided with a limiting bolt (30) for limiting the relative sliding distance of the sliding block (27) and the second sliding seat (31).

5. An electrical conduit surface coating apparatus as defined in claim 1, wherein, The coating assembly (10) comprises a hopper (32) and a coating roller (33), the hopper (32) contains fluid paint, and the lower part of the hopper (32) is in a conical 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).

6. An electrical conduit surface coating apparatus as defined in claim 1, wherein, 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), the fixed seat (35), the gear (41), the first rack (40) and the second rack (39) are provided with two, the gear (41) is fixed on the transmission shaft (37), the two 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 the two sides of the gear (41), one end of the first rack (40) and the second rack (39) penetrates through the material guide frame (7) and extends into the through groove (38), the gear (41) is in meshing transmission with the first rack (40) and the second rack (39), and the fixed seat (35) is fixedly connected with the material guide frame (7) through bolts.

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