Power cable core wire coating device

Abstract

The invention relates to the technical field of cable core wires, in particular to a power cable core wire coating device which comprises a supporting main frame and a center ring, the lower end of the center ring is fixed to the supporting main frame, wire clamping structures are installed on the portions, located on the two sides of the center ring, of the upper surface of the supporting main frame, and a rotatable coating material discharging structure is installed on the inner ring face of the center ring. The wire clamping structure comprises two side edge clamping structures which are symmetrically located on the two sides of the axis of the center ring. According to the invention, a cable core can pass through the space between the two side edge clamping structures at the two sides, and the air pressure telescopic structures which are symmetrical up and down push the symmetrical wire jacking rods to press the contacted cable core, so that the two ends of the part, located at the central ring, of the cable core are clamped by the wire jacking rods at the two sides; and then the soft belts on the two sides rotate to drive the wire jacking rods to synchronously move along with the cable core, so that the cable core cannot be bent when being pulled by the insulating belt, and the insulating belt can be uniformly wound in the cable core conveying and moving process.

Description

Technical Field

[0001] The present invention relates to the technical field of cable cores, and more particularly to a device for coating power cable cores. Background Art

[0002] Electric wires and cables are wire products used to transmit electrical (magnetic) energy, information, and achieve the conversion of electrical and magnetic energy. In a broad sense, electric wires and cables are also simply referred to as cables. In a narrow sense, a cable refers to an insulated cable, which can be defined as a collection composed of the following parts: one or more insulated wire cores, and their respective possible coating layers, general protective layers, and outer protective layers. A cable can also have additional non-insulated conductors for transmitting electrical (magnetic) energy, information, and achieving the conversion of electrical and magnetic energy.

[0003] Among the coating materials, some have a layer of rubber attached to the surface, and some wind an insulating tape around the surface of the wire core. A certain tension is required during the winding and conveying of the wire and cable to prevent the wire and cable from breaking. Currently, during the winding of the insulating tape, the wound part of the wire and cable is easily pulled and deformed, resulting in uneven winding of the insulating tape and inconsistent tightness of the insulating tape wound on the surface of the wire and cable. Therefore, a device for coating power cable cores is proposed. Summary of the Invention

[0004] In order to ensure that the cable core does not bend during winding and enable the insulating tape to be evenly wound on the surface of the cable core, the present invention provides a device for coating power cable cores.

[0005] A device for coating power cable cores provided by the present invention adopts the following technical solution: It includes a supporting main frame and a central ring. The lower end of the central ring is fixed to the supporting main frame. On the upper surface of the supporting main frame, clamping structures are installed on both sides of the central ring. A rotatable coating material feeding structure is installed on the inner ring surface of the central ring.

[0006] The clamping structure includes two side clamping structures, which are symmetrically located on both sides of the axis of the central ring.

[0007] The side clamping structure includes an air supply hollow box, a soft belt, and a plurality of pneumatic telescopic structures. The air supply hollow box is fixed to the supporting main frame. The plurality of pneumatic telescopic structures are evenly installed on the surface of the soft belt. The air supply hollow box is located inside the soft belt. A rotatable air transmission structure is inserted into the side of the air supply hollow box. Each pneumatic telescopic structure is connected and installed with the air transmission structure. The end of the pneumatic telescopic structure away from the soft belt is a telescopic end, and a wire pressing rod is installed at the telescopic end of the pneumatic telescopic structure.

[0008] A power structure for rotating the soft belt is installed on the side of the air supply hollow box.

[0009] Optionally, the pneumatic telescopic structure includes a solid end rod, a hollow end rod, and a longitudinal tube. The longitudinal tube is located on the outer ring side of the flexible belt. The solid end rod and the hollow end rod are respectively fixed to both sides of the flexible belt. The solid end rod is fixed to the longitudinal tube, and the hollow end rod is fixed to the longitudinal tube through a connecting tube. An elastically telescopic telescopic tube is connected and installed on the side of the longitudinal tube away from the flexible belt, and the other end of the telescopic tube is fixed to the adjacent top wire rod.

[0010] Optionally, a slidable hollow end head is elastically inserted into one end of the hollow end rod away from the flexible belt. A rotatable collar is connected and installed at the outer end of the hollow end head located outside the hollow end rod. The collar is connected and installed with the air transmission structure. Both ends of the flexible belt are in a semi-circular arc shape and the middle part is rectangular. A push plate is arranged on the front side of the flexible belt. Both ends of the push plate are inclined ends bent forward. The push plate is fixedly installed with the supporting main frame. The push plate is in sliding contact with the adjacent hollow end head. An air leakage groove is formed on the outer surface of the hollow end head. A round hole is formed on the end surface of the hollow end head located inside the hollow end rod. A plug disk is in fitting contact at the position of the round hole inside the hollow end head. The plug disk is elastically connected to the inner wall of the hollow end head. A top tube is slidably inserted into the round hole in a fitting manner. The outer end of the top tube located outside the hollow end head is connected and installed with the hollow end rod.

[0011] Optionally, the coating material feeding structure includes an annular rotating frame. A rotatable coating material feeding wheel is installed on the inner ring surface of the annular rotating frame. A damping structure for applying resistance is installed at the axis of the coating material feeding wheel. The damping structure is connected to the annular rotating frame. An external toothed ring is fixed on the outer surface of the annular rotating frame. A driving gear meshes with the outer ring surface of the external toothed ring. A motor A is fixed to the central ring. The driving gear is coaxially fixed to the output end of the motor A.

[0012] Optionally, the power structure includes a motor B and a dial wheel. The dial wheel is in a shape with a disc-shaped center, and the arc surface of the dial wheel is in multiple plate-like structures. The dial wheel is coaxially installed at the output end of the motor B. The motor B is fixed to the air supply hollow box. A plurality of uniformly distributed short shafts are fixed to the front surface of the flexible belt. The plate-like structures of the dial wheel are in contact with the adjacent short shafts.

[0013] Optionally, the air transmission structure includes a rotating tube and a flexible tube. One end of the rotating tube is rotatably inserted into the outer surface of the air supply hollow box. The other end of the rotating tube is fixedly connected to the flexible tube. The other end of the flexible tube is fixedly connected to the collar.

[0014] Optionally, the end surface of the top tube located inside the hollow end head is in a shape with multiple notches, and the outer diameter of the plug disk is larger than the inner diameter of the round hole.

[0015] Optionally, the damping structure includes an external groove wheel and an elastic baffle frame. The external groove wheel is coaxially fixed to the coating material feeding wheel. The outer ring surface of the external groove wheel is in multiple uniformly distributed concave-shaped structures. One end of the elastic baffle frame is fixed to the annular rotating frame, and the other end of the elastic baffle frame meshes with the concave-shaped structures of the external groove wheel.

[0016] Optionally, the minimum distance between the short axis and the dial wheel is less than the length of the plate-like structure of the dial wheel, and the extension line of the plate-like structure of the dial wheel intersects with the axis of the dial wheel.

[0017] In summary, the present invention includes the following beneficial technical effects: 1. By providing components such as a top wire rod, a pneumatic telescopic structure, and a gas supply hollow box, the cable core is passed through between two side clamping structures on both sides. The gas supply hollow box controls the pneumatic telescopic structure to extend through the gas transmission structure, pushing the top wire rod away from the connected soft belt. When the top wire rod rotates to the side of the center ring axis where the soft belt is located, the pneumatic telescopic structures symmetrically above and below push the symmetrical top wire rods to press the contacted cable core, so that both ends of the part of the cable core located at the center ring position are clamped by the top wire rods on both sides. Then, during the rotation of the soft belts on both sides, the top wire rods are driven to move synchronously with the cable core, so that the cable core will not bend when being pulled by the insulating tape, ensuring that the insulating tape can be evenly wound during the conveying and moving of the cable core.

[0018] 2. By providing components such as a hollow end head, a push plate, a top pipe, and a deflation groove, when the soft belt drives the hollow end rod and the hollow end head to move to the side of the center ring axis, the hollow end head moves from the inclined end of the push plate to the back of the push plate, gradually pressing the hollow end head into the hollow end rod. The top pipe enters the hollow end head from the round hole, so that the gas supply hollow box inflates the telescopic pipe through the rotating pipe, the hose, the top pipe, the hollow end rod, the connecting pipe, and the longitudinal pipe, causing the telescopic pipe to extend and push the top wire rod closer to the cable core. When the hollow end head is separated from the push plate, the hollow end head moves away from the top pipe under the elastic connection with the hollow end rod, so that the plugging disc seals the round hole. Then, the air pressure in the hollow end rod leaks through the deflation groove, causing the telescopic pipe to expand and contract to pull the top wire rod closer to the soft belt for reset, facilitating the clamping of the cable core by the top wire rod when facing the cable again.

[0019] 3. By providing components such as an outer groove wheel and an elastic baffle frame, when the covering material feeding wheel rotates, it drives the outer groove wheel to rotate. During the rotation of the outer groove wheel, the elastic baffle is continuously pushed to elastically deform, applying resistance to the rotation of the outer groove wheel, ensuring that the insulating tape is in a taut state and will not loosen during winding, and further ensuring that the insulating tape is evenly wound on the surface of the cable core. Description of the Drawings

[0020] Figure 1 is a schematic diagram of the overall structure in an embodiment of the present invention; Figure 2 is a schematic diagram of the structure of the side clamping structure distributed relative to the cable core in an embodiment of the present invention; Figure 3 is a schematic diagram of the structure of the dial wheel and the short axis distributed in an embodiment of the present invention; Figure 4 is a schematic diagram of the structure of the connecting pipe and the longitudinal pipe connected in an embodiment of the present invention; Figure 5It is a schematic structural diagram of the connection between the hollow end rod and the jacking pipe in the embodiment of the present invention; Figure 6 It is a schematic top view of part of the structure in the embodiment of the present invention; Figure 7 It is a schematic structural diagram of the connection between the rotating ring frame and the central ring in the embodiment of the present invention; Figure 8 It is a schematic side view of part of the structure in the embodiment of the present invention.

[0021] Reference numerals: 1, support main frame; 2, central ring; 3, wire clamping structure; 31, side clamping structure; 311, air supply hollow box; 312, soft belt; 313, pneumatic telescopic structure; 3131, solid end rod; 3132, hollow end rod; 3133, longitudinal pipe; 3134, connecting pipe; 3135, telescopic pipe; 3136, hollow end head; 3137, collar; 3138, push plate; 3139, air release groove; 31311, plug disc; 31312, jacking pipe; 314, air transmission structure; 3141, rotating pipe; 3142, flexible pipe; 315, wire jacking rod; 4, coating material feeding structure; 41, annular rotating frame; 42, coating material feeding wheel; 43, damping structure; 431, outer groove wheel; 432, elastic baffle frame; 44, external toothed ring; 45, driving gear; 46, motor A; 5, power structure; 51, motor B; 52, dial wheel; 53, short shaft. Detailed implementation manners

[0022] The following will Figures 1-8 further describe the present invention in detail.

[0023] The embodiment of the present invention discloses a device for coating the core wire of a power cable. As Figures 1-8 shown, it includes a support main frame 1 and a central ring 2. The lower end of the central ring 2 is fixed to the support main frame 1. On the upper surface of the support main frame 1, wire clamping structures 3 are installed on both sides of the central ring 2. On both sides of the wire clamping structures 3 on both sides, a wire winding device and a wire core unwinding device of the cable are respectively arranged. A rotatable coating material feeding structure 4 is installed on the inner ring surface of the central ring 2.

[0024] The coating material feeding structure 4 includes an annular rotating frame 41. An rotatable coating material feeding wheel 42 is installed on the inner ring surface of the annular rotating frame 41. The material wheel wound with the coating material is sleeved and fixed on the surface of the coating material feeding wheel 42, so that the material wheel rotates synchronously with the coating material feeding wheel 42. A damping structure 43 for applying resistance is installed at the axis of the coating material feeding wheel 42. The damping structure 43 applies resistance to the rotation of the coating material feeding wheel 42 to ensure that the coating material is in a taut state when being pulled out, and will not wrinkle during slack winding. The damping structure 43 is connected to the annular rotating frame 41. An external toothed ring 44 is fixed on the outer surface of the annular rotating frame 41. The outer ring surface of the external toothed ring 44 meshes with a driving gear 45. A motor A 46 is fixed on the central ring 2. The driving gear 45 is coaxially fixed with the output end of the motor A 46. The motor A 46 drives the annular rotating frame 41 to rotate through the driving gear 45 meshing with the external toothed ring 44, so that the coating material feeding wheel 42 rotates around the cable at the center of the central ring 2.

[0025] The damping structure 43 includes an external grooved wheel 431 and an elastic baffle frame 432. The external grooved wheel 431 is coaxially fixed with the coating material feeding wheel 42. The outer ring surface of the external grooved wheel 431 has a plurality of uniformly distributed concave structures. One end of the elastic baffle frame 432 is fixed to the annular rotating frame 41, and the other end of the elastic baffle frame 432 meshes with the concave structure of the external grooved wheel 431. The end of the elastic baffle frame 432 meshing with the external grooved wheel 431 is made of an elastically bendable material. During the rotation of the external grooved wheel 431, the elastic baffle frame 432 applies resistance to the rotation of the external grooved wheel 431 through elastic deformation.

[0026] The wire clamping structure 3 includes two side clamping structures 31, and the two side clamping structures 31 are symmetrically located on both sides of the axis of the central ring 2.

[0027] The side clamping structure 31 includes an air supply hollow box 311, a soft belt 312 and a plurality of pneumatic telescopic structures 313. The air supply hollow box 311 is fixed to the main support frame 1. The plurality of pneumatic telescopic structures 313 are uniformly installed on the surface of the soft belt 312. The air supply hollow box 311 is arranged inside the soft belt 312 in a matching manner. A power structure 5 for rotating the soft belt 312 is installed on the side of the air supply hollow box 311, and the power structure 5 drives the soft belt 312 to rotate annularly on the outer surface of the air supply hollow box 311.

[0028] The power structure 5 includes a motor B51 and a paddle wheel 52. The paddle wheel 52 is disk-shaped in the center, and its arc surface is composed of multiple plate-like structures. The paddle wheel 52 is coaxially installed at the output end of the motor B51. The motor B51 is fixed to the air supply hollow box 311. A plurality of evenly distributed short shafts 53 are fixed to the front surface of the flexible belt 312. The plate-like structure of the paddle wheel 52 contacts the adjacent short shafts 53. The minimum distance between the short shaft 53 and the paddle wheel 52 is less than the length of the plate-like structure of the paddle wheel 52. The extension line of the plate-like structure of the paddle wheel 52 intersects with the axis of the paddle wheel 52. The number of the plate-like structures of the paddle wheel 52 and the short shafts 53 is such that at least one plate-like structure contacts the short shaft 53 during the rotation of the paddle wheel 52. During the rotation of the motor B51 driving the paddle wheel 52, the plate-like structure of the paddle wheel 52 drives the flexible belt 312 to rotate stably on the surface of the air supply hollow box 311 by alternately pushing the short shafts 53.

[0029] A rotatable air transmission structure 314 is inserted into the side of the air supply hollow box 311. An air pump is installed on the air supply hollow box 311 so that the air supply hollow box 311 can fill the air transmission structure 314 with air flow. Each pneumatic telescopic structure 313 is connected and installed to the air transmission structure 314. The end away from the flexible belt 312 of the pneumatic telescopic structure 313 is the telescopic end. A top wire rod 315 is installed at the telescopic end of the pneumatic telescopic structure 313. The rotation speed of the motor B51 driving the flexible belt 312 ensures that when the top wire rod 315 contacts the cable, the moving speed of the top wire rod 315 is the same as the cable conveying speed. The number of the top wire rod 315 is set so that at least one top wire rod 315 contacts the cable during the rotation of the flexible belt 312, ensuring that the parts of the cable on both sides of the central ring 2 can be clamped all the time.

[0030] The pneumatic telescopic structure 313 includes a solid end rod 3131, a hollow end rod 3132 and a longitudinal tube 3133. The longitudinal tube 3133 is located on the outer ring side of the flexible belt 312. The solid end rod 3131 and the hollow end rod 3132 are respectively fixed to the two side surfaces of the flexible belt 312. The solid end rod 3131 is fixed to the longitudinal tube 3133. A slidable hollow end head 3136 is elastically inserted at the end of the hollow end rod 3132 away from the flexible belt 312. The elastic connection can be made of materials such as springs that can elastically expand and contract. The elastic connection between the hollow end head 3136 and the hollow end rod 3132 has a tendency to push the hollow end head 3136 to move outside the hollow end rod 3132. A rotatable collar 3137 is connected and installed at the end of the hollow end head 3136 located outside the hollow end rod 3132. The collar 3137 is connected and installed to the air transmission structure 314.

[0031] The air transmission structure 314 includes a rotating pipe 3141 and a flexible pipe 3142. One end of the rotating pipe 3141 is rotatably inserted into the outer surface of the air supply hollow box 311, the other end of the rotating pipe 3141 is fixedly communicated with the flexible pipe 3142, and the other end of the flexible pipe 3142 is fixedly communicated with the collar 3137. During the movement of the hollow end rod 3132 following the flexible belt 312, the flexible belt 312 drives the rotating pipe 3141 to rotate relative to the air supply hollow box 311.

[0032] Both ends of the flexible belt 312 are in a semi-circular arc shape and the middle part is rectangular. A push plate 3138 is arranged on the front side of the flexible belt 312. Both ends of the push plate 3138 are inclined ends bent forward. The push plate 3138 is fixedly installed with the main support frame 1. The length of the push plate 3138 is less than the length of the middle rectangular part of the flexible belt 312. The push plate 3138 is in sliding contact with the adjacent hollow end head 3136. An air leakage groove 3139 is opened on the outer surface of the hollow end head 3136. A round hole is opened on the end surface of the hollow end head 3136 at the inner end of the hollow end rod 3132. A plug disk 31311 is in contact and cooperation at the position of the round hole inside the hollow end head 3136. The plug disk 31311 is elastically connected to the inner wall of the hollow end head 3136. The elastic connection between the plug disk 31311 and the hollow end head 3136 has a tendency to push the plug disk 31311 to block the round hole. The outer diameter of the plug disk 31311 is smaller than the inner diameter of the hollow end head 3136. A top pipe 31312 is inserted into the round hole in a sliding and matching manner. The outer end of the top pipe 31312 located outside the hollow end head 3136 is communicated and installed with the hollow end rod 3132. Before the top pipe 31312 enters the round hole, the air flow in the hollow end rod 3132 is discharged to the outside through the air leakage groove 3139. The end surface of the inner end of the top pipe 31312 located inside the hollow end head 3136 is in a shape of multiple notches. The outer diameter of the plug disk 31311 is larger than the inner diameter of the round hole. When the hollow end head 3136 moves between the two inclined ends on the back of the push plate 3138, when the top pipe 31312 pushes the plug disk 31311 to disengage from blocking the round hole, the air flow in the hollow end head 3136 enters the top pipe 31312 and the hollow end rod 3132 through the notches of the top pipe 31312.

[0033] The hollow end rod 3132 and the longitudinal pipe 3133 are fixed through a connecting pipe 3134. An elastically telescopic telescopic pipe 3135 is communicated and installed on the side of the longitudinal pipe 3133 away from the flexible belt 312. The elastically arranged telescopic pipe 3135 has a tendency to contract. The other end of the telescopic pipe 3135 is fixed to the adjacent top wire rod 315. The top wire rods 315 on both sides of the cable are symmetrically distributed, so that the top wire rods 315 on both sides of the cable can be in contact with and clamp the cable at the same time.

[0034] The working principle is as follows: The cable core being conveyed passes through the axis of the central ring 2, and at the same time, the cable core passes between the side clamping structures 31 on the upper and lower sides. The air supply hollow box 311 fills the pneumatic telescopic structure 313 with air pressure through the air transmission structure 314. The pneumatic telescopic structure 313 filled with air pressure pushes the wire top rod 315 away from the soft belt 312 through extension, so that when the wire top rod 315 rotates to the side of the axis of the central ring 2 following the soft belt 312, the wire top rod 315 contacts the cable under the push of the pneumatic telescopic structure 313. When the symmetrically arranged wire top rods 315 on the upper and lower sides contact the cable simultaneously, the cable is clamped. At the same time, the speed of the soft belt 312 driving the wire top rod 315 to move is controlled to be the same as the speed of the cable, so that both ends of the cable located on the inner ring side of the central ring 2 are clamped, and the insulating tape will not pull and bend the cable core when winding around the surface of the core, ensuring that the insulating tape can be evenly wound around the surface of the cable core.

[0035] The above are all the preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention shall be covered within the protection scope of the present invention.

Claims

1. A power cable core wire coating device, comprising a support main frame (1) and a central ring (2), the lower end of the central ring (2) is fixed to the support main frame (1), and it is characterized in that: On the upper surface of the supporting main frame (1) on both sides of the central ring (2), a wire clamping structure (3) is installed, and a rotatable coating material feeding structure (4) is installed on the inner ring surface of the central ring (2); The wire clamping structure (3) includes two side clamping structures (31), and the two side clamping structures (31) are symmetrically located on both sides of the axis of the central ring (2); The side clamping structure (31) includes a gas supply hollow box (311), a soft belt (312) and a plurality of pneumatic telescopic structures (313). The gas supply hollow box (311) is fixed to the supporting main frame (1). The plurality of pneumatic telescopic structures (313) are uniformly installed on the surface of the soft belt (312). The gas supply hollow box (311) is located inside the soft belt (312). A rotatable gas transmission structure (314) is inserted into the side surface of the gas supply hollow box (311). Each pneumatic telescopic structure (313) is connected and installed with the gas transmission structure (314). The end of the pneumatic telescopic structure (313) away from the soft belt (312) is a telescopic end, and a wire pressing rod (315) is installed at the telescopic end of the pneumatic telescopic structure (313); A power structure (5) for rotating the soft belt (312) is installed on the side surface of the gas supply hollow box (311).

2. The power cable core wire coating device according to claim 1, wherein: The pneumatic telescopic structure (313) includes a solid end rod (3131), a hollow end rod (3132) and a longitudinal pipe (3133). The longitudinal pipe (3133) is located on the outer ring side of the soft belt (312). The solid end rod (3131) and the hollow end rod (3132) are respectively fixed to both side surfaces of the soft belt (312). The solid end rod (3131) is fixed to the longitudinal pipe (3133). The hollow end rod (3132) is fixed to the longitudinal pipe (3133) through a connecting pipe (3134). An elastically telescopic telescopic pipe (3135) is connected and installed on the side of the longitudinal pipe (3133) away from the soft belt (312). The other end of the telescopic pipe (3135) is fixed to the adjacent wire pressing rod (315).

3. The covering device for the core wire of a power cable according to claim 2, characterized in that: One end of the hollow end rod (3132) far from the soft belt (312) is elastically inserted with a slidable hollow end head (3136). One end of the hollow end head (3136) located outside the hollow end rod (3132) is connected and installed with a rotatable collar (3137). The collar (3137) is connected and installed with the air transmission structure (314). The two ends of the soft belt (312) are in a semi-circular arc shape and the middle part is rectangular. A push plate (3138) is arranged on the front side of the soft belt (312). Both ends of the push plate (3138) are inclined ends bent forward. The push plate (3138) is fixedly installed with the support main frame (1). The push plate (3138) is in sliding contact with the adjacent hollow end head (3136). An air leakage groove (3139) is formed on the outer surface of the hollow end head (3136). A round hole is formed on the end surface of one end of the hollow end head (3136) located inside the hollow end rod (3132). A plug disk (31311) is in contact and cooperation at the position of the round hole inside the hollow end head (3136). The plug disk (31311) is elastically connected with the inner wall of the hollow end head (3136). A top pipe (31312) is slidably inserted in the round hole in a matching manner. One end of the top pipe (31312) located outside the hollow end head (3136) is connected and installed with the hollow end rod (3132).

4. A power cable core wire coating device according to claim 1, characterized in that: The coating material feeding structure (4) includes an annular rotating frame (41). A rotatable coating material feeding wheel (42) is installed on the inner ring surface of the annular rotating frame (41). A damping structure (43) for applying resistance is installed at the axis of the coating material feeding wheel (42). The damping structure (43) is connected with the annular rotating frame (41). An external tooth ring (44) is fixed on the outer surface of the annular rotating frame (41). A driving gear (45) is meshed with the outer ring surface of the external tooth ring (44). A motor A (46) is fixed on the central ring (2). The driving gear (45) is coaxially fixed with the output end of the motor A (46).

5. A power cable core wire coating device according to claim 1, characterized in that: The power structure (5) includes a motor B (51) and a dial plate wheel (52). The shape of the dial plate wheel (52) is a disk shape at the center. The arc surface of the dial plate wheel (52) is in a plurality of plate-like structures. The dial plate wheel (52) is coaxially installed at the output end of the motor B (51). The motor B (51) is fixed with the air supply hollow box (311). A plurality of uniformly distributed short shafts (53) are fixed on the front surface of the soft belt (312). The plate-like structure of the dial plate wheel (52) is in contact with the adjacent short shaft (53).

6. The power cable core wire coating device according to claim 3, characterized in that: The air transmission structure (314) includes a rotating pipe (3141) and a hose (3142). One end of the rotating pipe (3141) is rotatably inserted on the outer surface of the air supply hollow box (311). The other end of the rotating pipe (3141) is fixedly communicated with the hose (3142). The other end of the hose (3142) is fixedly communicated with the collar (3137).

7. A power cable core wire coating device according to claim 3, characterized in that: One end of the top pipe (31312) located inside the hollow end head (3136) is in a plurality of notch shapes at the end surface. The outer diameter of the plug disk (31311) is larger than the inner diameter of the round hole.

8. The power cable core wire coating device according to claim 4, characterized in that: The damping structure (43) includes an outer grooved wheel (431) and an elastic baffle frame (432). The outer grooved wheel (431) is coaxially fixed to the covering material unwinding wheel (42). The outer ring surface of the outer grooved wheel (431) has a plurality of uniformly distributed concave structures. One end of the elastic baffle frame (432) is fixed to the annular rotating frame (41), and the other end of the elastic baffle frame (432) engages with the concave structure of the outer grooved wheel (431).

9. The power cable core wire coating device according to claim 5, characterized in that: The minimum distance between the short shaft (53) and the dial wheel (52) is less than the length of the plate-like structure of the dial wheel (52), and the extension line of the plate-like structure of the dial wheel (52) intersects with the axis of the dial wheel (52).

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