Power cable hot melting coating device

Abstract

The invention relates to the technical field of power cable protection, in particular to a power cable hot melting coating device which comprises two driving assemblies installed on a cable body, each driving assembly comprises a shell and a U-shaped plate, and the shells and the U-shaped plates are each provided with a driving wheel used for being attached to and driving the cable body; clamping mechanisms used for clamping the cable body are arranged on the two sides of the shell and matched with the U-shaped plates; the connecting assembly is connected with the two driving assemblies, device configuration can be adjusted according to the number of the cables, the connecting assembly comprises a fixing plate and fixing blocks arranged at the front end and the rear end of the fixing plate, and the fixing blocks are detachably connected with the driving assemblies; the coating assembly is installed on the connecting assembly and comprises an upper arc-shaped plate and a lower arc-shaped plate which can be opened and closed, a material storage assembly, and a semi-circular-ring-shaped material guide ring, a coating ring and a drying assembly which are arranged on the oppositely-combined face of the upper arc-shaped plate and the lower arc-shaped plate; the device has the advantages that the device can adapt to cable specifications, the coating quality is stable, and on-site flexible deployment is facilitated.

Description

Technical Field

[0001] This invention relates to the field of power cable protection technology, specifically to a power cable hot melt coating device. Background Technology

[0002] A power cable hot melt coating device is a device that melts solid coating materials (usually hot melt adhesive, polyethylene, polypropylene, EVA, etc.) into a fluid by heating, and then uniformly applies it to the surface of the cable conductor, insulation layer or sheath. Its purpose is to form functional layers such as waterproof sealing, insulation repair, corrosion protection, marking or enhanced mechanical strength.

[0003] Currently, cable thermal fusion repair mostly uses handheld coating equipment or large-scale assembly line equipment. Handheld equipment relies on manual movement and uniform coating by the operator, which is inefficient, has unstable quality, and requires high operator skills. Large-scale assembly line equipment can guarantee quality, but the equipment is bulky and cannot be moved. It is only suitable for production in cable factories and cannot meet the needs of coating and protecting laid cables on site, especially at high altitudes.

[0004] To address the aforementioned issues, we propose a power cable hot melt coating device that can adapt to cable specifications, provide stable coating quality, and facilitate flexible on-site deployment. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a power cable hot melt coating device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a power cable hot melt coating device, comprising: two driving components mounted on the cable body for driving the entire device to move along the cable body; each driving component includes a housing and a U-shaped plate, and both the housing and the U-shaped plate are provided with driving wheels for attaching and driving the cable body; clamping mechanisms for clamping the cable body are provided on both sides of the housing in cooperation with the U-shaped plate; a connecting component connecting the two driving components and capable of adjusting the device configuration according to the number of cables; the connecting component includes a fixing plate and fixing blocks disposed at the front and rear ends of the fixing plate, the fixing blocks being detachably connected to the driving components; and a coating component mounted on the connecting component for coating the cable body with a hot melt material; the coating component includes an openable upper arc plate and a lower arc plate, a material storage component, and a semi-circular annular guide ring, a coating ring, and a drying component disposed on the mating surfaces of the upper and lower arc plates.

[0007] Preferably, the coating component is mounted on the fixed plate via a connecting mechanism; the connecting mechanism includes a connecting block disposed on the lower arc plate, a connecting seat connected to the fixed plate, and a second threaded rod, wherein the connecting block and the connecting seat are detachably connected, and the second threaded rod is threaded through the fixed plate and threadedly engaged with the connecting seat or the connecting block.

[0008] Preferably, a first control plate is provided on the top of the outer casing, and a second telescopic rod is provided inside the outer casing at the lower end of the first control plate. A second U-shaped mounting seat is fixed at the lower end of the second telescopic rod, and a second drive wheel is provided inside the second U-shaped mounting seat. The second telescopic rod is connected to the second U-shaped mounting seat on which the second drive wheel is mounted. The second drive wheel is connected to a third motor through a second transmission assembly. A second control plate is provided on the top of the U-shaped plate, and a first U-shaped mounting seat on which the first drive wheel is mounted is connected inside the U-shaped plate through the first telescopic rod. The first drive wheel is connected to a second motor through a first transmission assembly. The first transmission assembly and the second transmission assembly have the same structure, both consisting of two meshing bevel gears.

[0009] Preferably, the clamping mechanism includes clamping plates symmetrically arranged on both sides of the U-shaped plate, and rollers are provided on the inner side of the clamping plates; a threaded sleeve driven by a first motor through a gear transmission component is provided on the U-shaped plate, and a first threaded rod is internally threaded to the threaded sleeve, the end of the first threaded rod being movably connected to the clamping plate to drive its movement.

[0010] Preferably, the fixing block is embedded in a fixing groove provided on the side of the drive assembly and is fixed by a locking member.

[0011] Preferably, the material storage assembly includes a storage tank, a stirring mechanism, a heating mechanism, and a feeding pipeline; the top of the storage tank is provided with a feeding port, which is equipped with an openable and closable cover; the stirring mechanism includes a stirring rod, which is rotatably supported in the storage tank by a bearing seat and driven by a fourth motor located on the outside of the material storage assembly; the heating mechanism includes a heating plate located on the inner wall of the storage tank and a second electric heating plate electrically connected thereto; the feeding pipeline includes a conveying pipe, a melt pump, a guide pipe, and a discharge pipe, the conveying pipe connecting the discharge port of the storage tank to the inlet of the melt pump, the outlet of the melt pump being connected to the discharge pipe through the guide pipe, the guide pipe and the discharge pipe being connected by a sleeve, and the discharge pipe being connected to the guide ring of the coating assembly.

[0012] Preferably, the upper surface of the material storage component is provided with mounting plates at both the front and rear ends, the front mounting plate is provided with the discharge pipe in the middle, and the rear mounting plate is provided with the first heating plate in the middle; the first heating plate is connected to the drying component through a connecting pipe to provide hot air.

[0013] Preferably, the guide ring is composed of an upper guide ring and a lower guide ring that are symmetrically snapped together, and has an annularly distributed guide port inside; the coating ring includes a plurality of lower coating rings disposed on the lower arc plate and an upper coating ring disposed on the upper arc plate; the drying assembly includes an upper drying assembly and a lower drying assembly disposed on the upper and lower arc plates respectively, and has an electric heating tube and a drying hood disposed inside.

[0014] Preferably, the cross-section of the coating ring is a semi-circular frustum, and its opening size gradually decreases along the cable travel direction.

[0015] Preferably, the connecting assembly further includes connecting plates symmetrically arranged in the middle of the fixed plate, which are used to enhance structural stability or provide an interface for installing other auxiliary equipment (such as cameras or sensors).

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention achieves stable autonomous movement on cables through a multi-motor coordinated drive and clamping system; it adapts to different cable arrangements through an adjustable connection structure; and it enables high-quality, continuous, and automated coating of hot-melt materials through an integrated "flow guiding-scraping-drying" ring coating head. Its design has strong engineering practicality and innovation, and can effectively improve the efficiency and quality of cable protection coating.

[0017] This invention ensures the uniformity and stable flowability of the hot-melt material through a storage component with stirring and heating functions; effectively controls the coating thickness through a coating ring design with a semi-circular opening and gradually narrowing; and achieves rapid curing of the coating material through a drying component integrating hot air and electric heating tubes, further improving the consistency of coating quality and work efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the power cable installation structure of the present invention; Figure 3 This is a schematic diagram of the connection component structure of the present invention; Figure 4 This is a schematic diagram of the drive component structure of the present invention; Figure 5 This is a schematic diagram of the outer structure of the drive component of the present invention; Figure 6 This is a schematic diagram of the inner structure of the drive component of the present invention; Figure 7 This is a schematic diagram of the side structure of the drive component of the present invention; Figure 8 This is a schematic diagram of the coating component structure of the present invention; Figure 9 This is a schematic diagram of the upper arc-shaped plate structure of the present invention; Figure 10 This is a schematic diagram of the material storage component structure of the present invention.

[0019] The diagram shows the following components: 1. Cable body; 2. Drive assembly; 3. Connecting assembly; 4. Coating assembly; 5. Fixing plate; 6. Connecting plate; 7. Fixing block; 8. Housing; 9. U-shaped plate; 10. First control board; 11. Second control board; 12. Screw sleeve; 13. First motor; 14. First threaded rod; 15. Fixing groove; 16. Clamping plate; 17. Roller; 18. First telescopic rod; 19. First U-shaped mounting base; 20. First drive wheel; 21. Second motor; 22. First transmission assembly; 23. Second telescopic rod; 24. Second U-shaped mounting base; 25. Second drive wheel; 26. Third motor; 27. Second transmission assembly; 28. Gear transmission component. 29. Upper arc plate; 30. Lower arc plate; 31. Material storage assembly; 32. Lower guide ring; 33. Lower coating ring; 34. Lower drying assembly; 35. Connecting block; 36. Connecting seat; 37. Second threaded rod; 38. Upper guide ring; 39. Upper coating ring; 40. Upper drying assembly; 41. Heating tube; 42. Drying hood; 43. Mounting plate; 44. Discharge pipe; 45. Cover plate; 46. Inlet; 47. First heating plate; 48. Connecting pipe; 49. Storage box; 50. Fourth motor; 51. Bearing seat; 52. Stirring rod; 53. Second heating plate; 54. Heating plate; 55. Conveying pipe; 56. Melt pump; 57. Guide pipe; 58. Sleeve. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention. Example 1

[0021] like Figure 1-7As shown, the present invention provides a power cable hot melt coating device, comprising: a cable body 1; two drive components 2, installed on the cable body 1, for driving the entire device to move along the cable body 1, the drive components 2 including a housing 8 and a U-shaped plate 9, both the housing 8 and the U-shaped plate 9 being provided with drive wheels for attaching and driving the cable body 1; clamping mechanisms for clamping the cable body 1 are provided on both sides of the housing 8 in conjunction with the U-shaped plate 9; a connecting component 3, connecting the two drive components 2, and capable of adjusting the device configuration according to the number of cables, the connecting component 3 including a fixing plate 5 and fixing blocks 7 provided at the front and rear ends of the fixing plate 5, the fixing blocks 7 being detachably connected to the drive components 2; and a coating component 4, installed on the connecting component 3, for coating the cable body 1 with hot melt material, the coating component 4 including an openable upper arc plate 29 and a lower arc plate 30, a material storage component 31, and a semi-circular annular guide ring, a coating ring, and a drying component provided on the mating surfaces of the upper and lower arc plates.

[0022] In this embodiment, when the device is in use, the two drive components 2 are first installed on the front and rear sides of the cable body 1 respectively: the U-shaped plate 9 is snapped into the bottom of the cable body 1, and the length of the first telescopic rod 18 is adjusted by the second control plate 11 so that the first U-shaped mounting seat 19 drives the first drive wheel 20 to fit against the cable surface; then the first motor 13 is started, and the screw sleeve 12 is driven to rotate by the gear transmission component 28, which drives the first threaded rod 14 to push the clamping plate 16 to move towards the cable until the inner roller 17 contacts the side wall of the cable, thus achieving the initial fixation of the U-shaped plate 9. Then the outer shell 8 is placed above the cable body 1, and the second telescopic rod 23 is adjusted by the first control plate 10 so that the second U-shaped mounting seat 24 drives the second drive wheel 25 to fit against the upper surface of the cable. The clamping mechanisms on both sides move synchronously to ensure that the drive components 2 and the cable body 1 are stably connected. The fixing block 7 of the connecting component 3 is embedded in the fixing groove 15 on the side of the driving component 2 and fixed by a locking component such as a bolt to realize the connection of the two driving components 2; If multiple parallel cables need to be processed, the length of the fixing plate 5 can be extended by the connecting plate 6, the number of drive components 2 and coating components 4 can be increased, and the device configuration can be adjusted to meet the needs of multi-cable operation. In this embodiment, the coating component 4 is installed and adjusted as follows: the lower arc plate 30 is connected to the connecting seat 36 through the connecting block 35, so that the lower guide ring 32, the lower coating ring 33 and the cable body 1 are aligned; then the upper arc plate 29 is closed, so that the upper guide ring 38 and the lower guide ring 32 are symmetrically engaged, and the upper coating ring 39 and the lower coating ring 33 form a complete annular coating channel. The connection between the upper and lower arc plates is fixed by rotating the second threaded rod 37 on the fixed plate 5.

[0023] In this embodiment, the preparation work of the material storage component 31 is as follows: open the cover plate 45 on the top of the storage box 49, add the hot melt material such as polyethylene particles into the storage box 49 through the feed port 46, and close the cover plate 45 to prevent impurities from entering; start the second electric heating plate 53, and heat the material through the heating plate 54 on the inner wall of the storage box 49. After the material melts into a fluid, start the fourth motor 50 to drive the stirring rod 52 to rotate, so that the hot melt material is kept in a uniform state and avoids sedimentation or local overheating.

[0024] In this embodiment, when the coating operation begins, the melt pump 56 is started. The hot melt material in the storage tank 49 enters the melt pump 56 through the conveying pipe 55. After being pressurized, it is conveyed to the discharge pipe 44 through the guide pipe 57 and the sleeve 58, and finally enters the annular guide port of the guide ring. The guide ring evenly distributes the hot melt material to the coating ring. The semi-circular channel opening formed by the upper coating ring 39 and the lower coating ring 33 gradually narrows along the cable travel direction, so that the material is gradually squeezed into a uniform coating on the surface of the cable body 1, effectively controlling the coating thickness. At the same time, the hot air generated by the first electric heating plate 47 is conveyed to the drying component through the connecting pipe 48. The electric heating tube 41 further heats the air. The drying hood 42 concentrates the hot air onto the coated cable surface to achieve rapid curing of the coating and avoids dripping.

[0025] The second motor 21 and the third motor 26 of the drive assembly 2 start synchronously. The first transmission assembly 22 and the second transmission assembly 27 are both composed of two meshing bevel gears, which drive the first drive wheel 20 and the second drive wheel 25 to rotate, respectively, driving the entire device to move at a constant speed along the cable body 1. During movement, the rollers 17 of the clamping mechanism reduce friction between the device and the cable, ensuring stability of movement.

[0026] Workflow: Preparation: Place the device on the cable to be coated, and activate the clamping mechanism through the outer casing 8 and the U-shaped plate 9 to clamp the side wall of the cable with the roller 17.

[0027] Drive: Start the motor in drive assembly 2, drive the wheel to rub against the cable surface, and drive the entire device to move forward slowly and at a constant speed along the cable.

[0028] Coating: The molten material in the storage component 31 is pumped out by the melt pump 56 and transported through the pipeline to the guide ring of the coating component 4, where it is evenly distributed to the circumference of the cable. The material is scraped to the required thickness through the tapered coating ring.

[0029] Curing: The coated cable enters the drying assembly area and is heated and baked by the electric heating tube 41, so that the hot melt material can be quickly cured and formed.

[0030] Adjustment: By connecting component 3, the device can be adapted to coating tasks of single or multiple parallel laid cables. Example 2

[0031] like Figure 1 and Figure 3 As shown, the present invention provides a power cable hot melt coating device, which is fully mounted on the cable body 1 to be treated. The device is mainly composed of a front drive assembly, a connecting assembly 3, a coating assembly 4 and a rear drive assembly connected in sequence. The front and rear drive assemblies have the same structure and are arranged symmetrically. The connecting component 3 includes a fixing plate 5 and fixing blocks 7 fixed at its front and rear ends. The fixing blocks 7 are detachably embedded in the fixing groove 15 opened on the side of the driving component 2 and fixed by locking members. A connecting plate 6 may be provided in the middle of the fixing plate 5. The coating component 4 is installed below the fixed plate 5 via a connecting mechanism. The mechanism includes a connecting block 35 on the lower arc plate 30, a connecting seat 36 connected to the fixed plate 5, and a second threaded rod 37. The second threaded rod 37 passes through the fixed plate 5 and is threadedly engaged with the connecting seat 36.

[0032] In this embodiment, as Figure 4-7 As shown, the drive assembly 2 includes a housing 8 and a U-shaped plate 9. A first control plate 10 is mounted on the top of the housing 8. Inside the housing 8, the lower end of the second telescopic rod 23 is connected to the second U-shaped mounting base 24, and the second drive wheel 25 is installed therein and driven by the third motor 26 through the second transmission assembly 27. A second control plate 11 is mounted on the top of the U-shaped plate 9. Inside it, the lower end of the first telescopic rod 18 is connected to the first U-shaped mounting base 19, and the first drive wheel 20 is installed therein and driven by the second motor 21 through the first transmission assembly 22. Screw sleeves 12 are symmetrically installed on both sides of the U-shaped plate 9. A first motor 13 drives the two screw sleeves 12 to rotate synchronously through a gear transmission component 28. A first threaded rod 14 is screwed into each screw sleeve 12. The end of the first threaded rod 14 is movably connected to the clamping plate 16. Rollers 17 are installed on the inner side of the clamping plate 16.

[0033] In this embodiment, as Figure 8 and Figure 9 As shown, the coating assembly 4 includes an openable upper arc plate 29 and a lower arc plate 30. The lower arc plate 30 has a lower guide ring 32, multiple lower coating rings 33 and a lower drying assembly 34 installed sequentially on its inner wall. The upper arc plate 29 has an upper guide ring 38, an upper coating ring 39 and an upper drying assembly 40 installed on its inner wall. The upper coating ring 39 has a semi-circular cross section, and the opening gradually narrows along the cable travel direction.

[0034] In this embodiment, as Figure 10As shown, the material storage assembly 31 includes a storage tank 49. The top of the storage tank 49 is provided with a feed inlet 46 with a cover plate 45. Inside the storage tank 49, the stirring rod 52 is supported by a bearing seat 51 and driven by a fourth motor 50. The inner wall of the storage tank 49 is provided with a heating plate 54, which is powered by a second electric heating plate 53. The molten material is pumped to the guide ring through a conveying pipe 55, a melt pump 56, a guide pipe 57, a sleeve 58, and a discharge pipe 44. The top surface of the material storage assembly 31 is provided with an mounting plate 43, the front end of which is equipped with a discharge pipe 44, and the rear end of which is equipped with a first electric heating plate 47. The first electric heating plate 47 is connected to the upper drying assembly 40 through a connecting pipe 48.

[0035] This device achieves automated operation of thermal fusion coating of power cables through the autonomous movement of drive component 2, the integrated design of coating component 4, and the stable feeding of material storage component 31. It effectively solves the problems of low efficiency and uneven thickness in traditional coating methods. Furthermore, by being adaptable to coating tasks of single or multiple parallel laid cables, it improves the adaptability to cables of different specifications and facilitates flexible deployment on site. At the same time, through multi-module collaboration, the device achieves automated, high-quality, and adaptable cable coating operations. Its design proposes a systematic solution to the pain points of existing technologies, has strong engineering practicality and promotional value, and is particularly suitable for fields such as power maintenance and field construction.

[0036] The foregoing has shown and described the basic principles and main features of the present invention and its advantages. It will be apparent to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects. The scope of the present invention is defined by the appended claims rather than the foregoing description. Therefore, it is intended that all changes falling within the meaning and scope of the equivalents of the claims be included within the present invention, and no reference numerals in the claims should be regarded as limiting the scope of the claims.

[0037] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A power cable hot melt coating device, characterized in that, include: Two drive components (2) are mounted on the cable body (1) to drive the entire device to move along the cable body (1). The drive component (2) includes a housing (8) and a U-shaped plate (9). Both the housing (8) and the U-shaped plate (9) are provided with drive wheels for attaching and driving the cable body (1). The housing (8) is provided with clamping mechanisms on both sides of the housing (8) in conjunction with the U-shaped plate (9) for clamping the cable body (1). The connecting component (3) connects the two drive components (2) and can adjust the device configuration according to the number of cables. The connecting component (3) includes a fixing plate (5) and fixing blocks (7) disposed at the front and rear ends of the fixing plate (5). The fixing blocks (7) are detachably connected to the drive components (2). The coating component (4) is installed on the connecting component (3) and is used to coat the cable body (1) with hot melt material. The coating component (4) includes an openable upper arc plate (29) and a lower arc plate (30), a material storage component (31), and a semi-circular annular material guide ring, a coating ring and a drying component disposed on the mating surfaces of the upper and lower arc plates.

2. The power cable hot melt coating device according to claim 1, characterized in that: The coating component (4) is mounted on the fixing plate (5) via a connecting mechanism; The connecting mechanism includes a connecting block (35) disposed on the lower arc plate (30), a connecting seat (36) connected to the fixed plate (5), and a second threaded rod (37). The connecting block (35) and the connecting seat (36) are detachably connected. The second threaded rod (37) is threaded through the fixed plate (5) and threadedly engaged with the connecting seat (36) or the connecting block (35).

3. The power cable hot melt coating device according to claim 1, characterized in that: The top of the outer casing (8) is provided with a first control plate (10), and inside it is a second U-shaped mounting base (24) for mounting a second drive wheel (25) connected by a second telescopic rod (23). The second drive wheel (25) is connected to a third motor (26) through a second transmission assembly (27). The top of the U-shaped plate (9) is provided with a second control plate (11), and inside it is a first U-shaped mounting seat (19) for mounting a first drive wheel (20) connected by a first telescopic rod (18). The first drive wheel (20) is connected to a second motor (21) through a first transmission assembly (22).

4. The power cable hot melt coating device according to claim 3, characterized in that: The clamping mechanism includes clamping plates (16) symmetrically arranged on both sides of the U-shaped plate (9), and rollers (17) are provided on the inner side of the clamping plates (16). The U-shaped plate (9) is provided with a threaded sleeve (12) driven by a first motor (13) through a gear transmission component (28). The threaded sleeve (12) is internally threaded with a first threaded rod (14). The end of the first threaded rod (14) is movably connected to the clamping plate (16) to drive it to move.

5. The power cable hot melt coating device according to claim 1, characterized in that: The fixing block (7) is embedded in the fixing groove (15) provided on the side of the drive assembly (2) and fixed by the locking member.

6. The power cable hot melt coating device according to claim 1, characterized in that: The material storage assembly (31) includes a material storage tank (49), a stirring mechanism, a heating mechanism, and a material supply pipeline; The storage bin (49) is provided with a feed inlet (46) on the top, and the feed inlet (46) is equipped with an openable and closable cover (45). The stirring mechanism includes a stirring rod (52), which is rotatably supported in the storage tank (49) by a bearing seat (51) and driven by a fourth motor (50) located outside the storage assembly (31); The heating mechanism includes a heating plate (54) disposed on the inner wall of the storage box (49) and a second electric heating plate (53) electrically connected thereto. The feeding pipeline includes a conveying pipe (55), a melt pump (56), a guide pipe (57), and a discharge pipe (44). The conveying pipe (55) connects the outlet of the storage tank (49) to the inlet of the melt pump (56). The outlet of the melt pump (56) is connected to the discharge pipe (44) through the guide pipe (57). The guide pipe (57) and the discharge pipe (44) are connected by a sleeve (58). The discharge pipe (44) is connected to the guide ring of the coating component (4).

7. The power cable hot melt coating device according to claim 6, characterized in that: The material storage assembly (31) has mounting plates (43) at both ends of its upper surface. The front mounting plate (43) has the discharge pipe (44) in the middle, and the rear mounting plate (43) has the first electric heating plate (47) in the middle. The first heating plate (47) is connected to the drying assembly via a connecting pipe (48) to provide hot air.

8. The power cable hot melt coating device according to claim 1, characterized in that: The guide ring is composed of an upper guide ring (38) and a lower guide ring (32) that are symmetrically snapped together, and has a ring-shaped guide port inside; The coating ring includes a plurality of lower coating rings (33) disposed on the lower arc plate (30) and an upper coating ring (39) disposed on the upper arc plate (29). The drying assembly includes an upper drying assembly (40) and a lower drying assembly (34) respectively disposed on the upper and lower arc plates, and is equipped with an electric heating tube (41) and a drying hood (42) inside.

9. The power cable hot melt coating device according to claim 8, characterized in that: The cross-section of the coating ring (39) is a semi-circular frustum, and its opening size gradually decreases along the direction of cable travel.

10. The power cable hot melt coating device according to claim 1, characterized in that: The connecting assembly (3) also includes a connecting plate (6) symmetrically arranged in the middle of the fixing plate (5).

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