Power cable copper strip shielding and winding device and implementation method

Abstract

The invention discloses a power cable copper strip shielding winding device and an implementation method, and belongs to the technical field of power cable manufacturing. The power cable copper strip shielding winding device comprises a device shell, a conveying pipe is arranged in the device shell, the conveying pipe is movably connected with a rotating sleeve, and the rotating sleeve is driven by double motors to rotate; the rotating sleeve is connected with a winding assembly, the winding assembly comprises a rotating column, an unwinding frame and a guide frame, and the device further comprises a pressing roller. According to the copper strip shielding and winding device for the power cable and the implementation method, manual intervention is reduced, the production efficiency is improved through integrated design and an automatic control system, the unwinding speed and tension of the copper strip are accurately controlled through cooperation of the magnetic powder brake and the floating roller, and the production efficiency is improved through real-time monitoring and adjustment. The consistency and uniformity of the copper strip shielding layer are ensured, so that the overall quality of the cable is improved, and the distance between the second support and the first support is adjustable.

Description

Technical Field

[0001] The present invention relates to the technical field of power cable manufacturing, and in particular to a copper tape shielding winding device for a power cable and an implementation method thereof. Background Art

[0002] In the manufacture of high-voltage power cables (such as cross-linked polyethylene insulated cables), copper tape shielding is a critical structure for suppressing electromagnetic interference and balancing the electric field. Traditional winding devices suffer from low efficiency, uneven tension, and poor adaptability, making them unable to meet the stringent cable shielding requirements of intelligent large-scale DC converter transformers and reactors. Existing technologies lack integration with intelligent control systems, making dynamic adjustment impossible. This results in inconsistent shielding tightness, impacting the long-term stability of the cable in intelligent power distribution systems. Summary of the Invention

[0003] The purpose of the present invention is to provide a copper tape shielding winding device for power cables and an implementation method. Through integrated design and automated control systems, manual intervention is reduced and production efficiency is improved. The unwinding speed and tension of the copper tape are precisely controlled by the cooperation of a magnetic powder brake and a floating roller. Through real-time monitoring and adjustment, the consistency and uniformity of the copper tape shielding layer are ensured, thereby improving the overall quality of the cable and solving the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned objectives, the present invention provides the following technical solution: a device for winding a copper tape shield for a power cable, comprising a device housing, a conveying pipe provided inside the device housing, the conveying pipe being movably connected to a rotating sleeve, and the rotating sleeve being driven to rotate by a dual motor; the rotating sleeve is connected to a winding assembly, the winding assembly comprising a rotating column, a reeling frame and a guide frame, and the device also comprising a pressing roller for pressing the wound power cable and outputting it.

[0005] Preferably, a support frame is provided at one end of the conveying pipe, a slide groove is provided on the conveying pipe, and a dual drive motor is provided on the conveying pipe.

[0006] Preferably, the rotating sleeve is sleeved with the sliding groove, and an end of the rotating sleeve close to the dual drive motor is provided with external teeth, which are engaged with the driving gear of the dual drive motor.

[0007] Preferably, the unwinding frame is provided with a servo motor, a magnetic powder brake and a pneumatic tensioning sleeve. The output end of the servo motor is connected to the magnetic powder brake, and the magnetic powder brake is connected to the pneumatic tensioning sleeve via a flange for controlling the unwinding speed and tension.

[0008] Preferably, a floating groove is provided at the lower end of the unwinding frame, and a floating roller is provided in the floating groove.

[0009] Preferably, the two ends of the floating roller are connected with sliders through bearings, a guide rod passing through the slider is provided in the floating groove, the upper end of the guide rod is sleeved with a first spring, and a pressure sensor is provided in the floating groove.

[0010] Preferably, a first bracket is provided at one end of the guide frame, a guide roller is movably connected to the first bracket, and a second bracket is sleeved on the guide roller. The distance between the second bracket and the first bracket is adjusted to adapt to copper strips of different widths.

[0011] Preferably, the upper and lower sides of the rotating sleeve are provided with limit rotation grooves, and the left and right sides of the rotating sleeve between the limit rotation grooves are provided with embedded micro motors, and the output end of the micro motor is fixedly connected to the push frame.

[0012] Preferably, a slip ring is provided at the lower end of the rotating column, and push rods are provided on both sides. The push rods are engaged with the push frames, and the push frames are rotated by a micromotor to achieve angle adjustment of the rotating column.

[0013] Another technical problem to be solved by the present invention is to provide a method for implementing a copper tape shielding winding device for a power cable, comprising the following steps:

[0014] Step 1: The dust removal device, cooling device and detection device installed inside the device shell ensure the cleanliness and suitable temperature of the working environment;

[0015] Step 2: The power cable enters the device through the conveying pipe and moves along a straight line to the winding position. According to the diameter of the power cable, the inclination angle of the winding assembly is adjusted so that the rotating column can rotate, thereby changing the winding angle of the copper tape relative to the power cable;

[0016] Step 3: The rotating sleeve is driven by dual motors, which in turn drives the winding assembly to rotate, and the unwinding frame accurately controls the unwinding speed;

[0017] Step 4: The copper tape is guided by the guide frame and finally spirally wound onto the power cable. The wound power cable is pressed by the pressing roller and then output to the device housing.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The copper tape shielding winding device and implementation method for power cables proposed in the present invention reduce manual intervention and improve production efficiency through integrated design and automated control system. The unwinding speed and tension of the copper tape are precisely controlled through the cooperation of the magnetic powder brake and the floating roller, and the consistency and uniformity of the copper tape shielding layer are ensured through real-time monitoring and adjustment, thereby improving the overall quality of the cable. The spacing between the second bracket and the first bracket is adjustable and can be flexibly adjusted to adapt to cables and copper tapes of different specifications, increasing the versatility and flexibility of the equipment. The design of the guide frame adopts a non-rigid connection to avoid wear and damage of the copper tape during transportation, further improving the yield rate. The push frame is controlled by a micromotor to enable the rotating column to rotate, thereby changing the winding angle of the copper tape relative to the power cable, ensuring that the edge of the copper tape does not warp, and forming an ideal spiral winding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is an overall structural diagram of the copper tape shielding winding device for power cables of the present invention;

[0021] Figure 2 This is a diagram of the connection structure between the delivery pipe and the rotating sleeve of the present invention;

[0022] Figure 3 For the present invention Figure 2 Exploded view;

[0023] Figure 4 This is a cross-sectional view of the connection between the delivery pipe and the rotating sleeve of the present invention;

[0024] Figure 5 This is a diagram showing the state of the rotating column angle adjustment of the present invention;

[0025] Figure 6 is an exploded view of the winding assembly of the present invention;

[0026] Figure 7 It is an enlarged view of point A of the present invention.

[0027] In the figure: 1. device housing; 11. pressing roller; 2. conveying pipe; 21. support frame; 22. slide; 23. dual drive motor; 231. drive gear; 3. rotating sleeve; 31. external gear; 32. limit rotating groove; 33. micro motor; 34. push frame; 341. limit frame; 4. winding assembly; 41. rotating column; 411. slip ring; 412. push rod; 42. unwinding frame; 421. servo motor; 422. magnetic powder brake; 423. pneumatic tensioning sleeve; 424. floating groove; 4241. guide rod; 4242. first spring; 425. floating roller; 4251. slider; 426. pressure sensor; 43. guide frame; 431. first bracket; 432. second bracket; 4321. slide hole; 4322. threaded rod; 4323. adjusting nut; 4324. second spring; 433. guide roller. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] In order to solve the problem that the existing technology lacks integration of intelligent control systems and cannot achieve dynamic adjustment, resulting in inconsistent shielding tightness and affecting the long-term stability of cables in intelligent power distribution systems, please refer to Figure 1-Figure 7 , this embodiment provides the following technical solutions:

[0030] The invention relates to a copper tape shielding winding device for power cables, comprising a device housing 1, which plays a protective role against dust. A dust removal device, a cooling device and a detection device are also provided inside the device housing 1, such as a vacuum cleaner, a fan, a laser rangefinder, a CCD visual unit, an infrared thermometer, etc., to adjust the working environment inside the device housing 1 and monitor the winding effect inside the device housing 1.

[0031] Specifically, a conveying pipe 2 is provided inside the device shell 1. The power cable passes through the conveying pipe 2 and moves in a straight line inside the conveying pipe 2. A pressing roller 11 is also provided inside the device shell 1. The wound power cable is pressed by the pressing roller 11 and then output from the device shell 1. A rotating sleeve 3 is movably connected to the conveying pipe 2. The rotating sleeve 3 rotates under the drive of a dual motor, driving the winding assembly 4 connected thereto to rotate, and spirally winding the copper tape onto the power cable.

[0032] In this embodiment, a support frame 21 is provided at one end of the delivery pipe 2, and the lower end of the support frame 21 is connected to the device housing 1 to fix the position of the delivery pipe 2. In addition, a slide groove 22 is provided on the delivery pipe 2 to limit the position of the rotating sleeve 3. A dual drive motor 23 is provided at a position of the delivery pipe 2 near the rotating sleeve 3, and the output ends of the dual drive motors 23 are both provided with drive gears 231 that engage with the rotating sleeve 3.

[0033] like Figure 2 As shown, the rotating sleeve 3 is sleeved with the slide groove 22, and an external tooth 31 is provided at one end of the rotating sleeve 3 close to the driving gear 231. The external tooth 31 is engaged with the driving gear 231. Under the action of the dual drive motor 23, the driving gear 231 drives the external tooth 31 to move, pushing the rotating sleeve 3 to rotate around the slide groove 22. The upper and lower sides of the rotating sleeve 3 are provided with limited rotation grooves 32. The left and right sides of the rotating sleeve 3 between the limited rotation grooves 32 are provided with embedded micromotors 33. The output end of the micromotor 33 is fixedly connected to the push frame 34.

[0034] like Figure 6 As shown, the winding assembly 4 includes a rotating column 41 movably connected to the limiting rotating groove 32 , a reeling frame 42 arranged at the upper end of the rotating column 41 , and a guide frame 43 connected to one side of the reeling frame 42 .

[0035] Specifically, a servo motor 421 is mounted on one side of the upper end of the unwinding frame 42. This active drive unit precisely controls the unwinding speed. The output shaft of the servo motor 421 is connected to a magnetic powder brake 422, providing modulated torque to maintain the copper strip tension. The magnetic powder brake 422 is flange-connected to a pneumatic tensioner 423, providing a keyless connection between the copper strip reel and the main shaft, transmitting torque. When changing reels, the pneumatic tensioner 423 releases pressure from 0.6 MPa to 0 MPa, causing the servo motor 421 to stop precisely, positioning within ±0.1°. The empty reel is removed and a new reel is installed. The pneumatic tensioner 423 is then pressurized to secure the new reel.

[0036] The first spring 4242 is connected to the upper end of the guide rod 4241 and the lower end of the guide rod 4242 is connected to the upper end of the guide rod 4241. The first spring 4242 pushes the lower end of the slider 4251 to contact the floating groove 424, and the copper strip passes through the bottom of the floating roller 425. When the tension of the copper strip is too large, the floating roller 425 is pushed to overcome the resistance of the first spring 4242 and move upward. A pressure sensor 426 is provided in the floating groove 424. When the slider 4251 moves up with the floating roller 425, it applies pressure to the pressure sensor 426. After receiving the signal, the pressure sensor 426 controls the magnetic powder brake 422 to work through the PID controller to change the tension of the copper strip.

[0037] The relationship between tension and displacement satisfies the following equation: F = k·Δx + F0, where k is the spring stiffness and F0 is the preload force. The relationship between displacement and pressure satisfies the following equation: P = (Δx / d) 2 E, d is the diameter of the sensor's sensitive element, E is the elastic modulus. For a 0.1mm thick copper strip, the spring stiffness k is 50±5N / mm, the maximum allowable displacement is ±15mm, the corresponding tension range is 20-200N, and the response frequency is ≥5Hz to avoid mechanical resonance.

[0038] Under the guidance of the floating roller 425, the copper strip is pushed along the guide frame 43. A first bracket 431 is provided at the end of the guide frame 43. A guide roller 433 is movably connected to the first bracket 431. One end of the guide roller 433 is movably connected to the first bracket 431 through a rotating shaft. The other end of the guide roller 433 is sleeved with a second bracket 432. A copper strip channel is formed between the second bracket 432 and the first bracket 431. The distance between the second bracket 432 and the first bracket 431 is adjusted according to the different widths of the copper strips.

[0039] Specifically, the second bracket 432 is provided with a sliding hole 4321 that matches the guide roller 433, and the sliding hole 4321 is sleeved on the guide roller 433. One end of the second bracket 432 is fixedly connected to a threaded rod 4322, which passes through the first bracket 431 and is engaged with an adjusting nut 4323 on the threaded rod 4322. A second spring 4324 is sleeved on the threaded rod 4322 on both sides of the first bracket 431. Screwing the adjusting nut 4323 can change the working length of the second spring 4324. When the working length of the second spring 4324 is shortened, the second bracket 432 moves toward the first bracket 431, reducing the distance between the second bracket 432 and the first bracket 431. Conversely, when the working length of the second spring 4324 is extended, the distance between the second bracket 432 and the first bracket 431 increases. The second spring 4324 makes the first bracket 431 and the second bracket 432 not rigidly connected, thereby avoiding wear on the copper strip.

[0040] It should also be noted that the copper strip itself has a certain width. When winding the copper strip, the direction of the copper strip needs to be adjusted to avoid the edge of the copper strip from warping. Specifically, the lower end of the rotating column 41 is provided with a slip ring 411 movably connected to the limit rotation groove 32. The slip ring 411 limits the rotating column 41 from being separated from the limit rotation groove 32. Push rods 412 are symmetrically provided on both sides of the rotating column 41. The push rods 412 are engaged with the push frame 34. The micromotor 33 controls the rotation of the push frame 34. A limit frame 341 is provided on the push frame 34. The limit frame 341 is plugged into the push rod 412. The push frame 34 is used to drive the push rod 412. 12 rotates, thereby controlling the rotation of the rotating column 41, and the limit frame 341 can adapt to the change in the position of the push rod 412 due to the rotation of the rotating column 41, ensuring that the push rod 412 is always connected with the limit frame 341 within the working range of the rotation of the rotating column 41. After the rotating column 41 rotates, it drives the entire unwinding rack 42 and the guide rack 43 to turn, and the winding angle of the copper tape relative to the power cable changes. At the same time, because the micromotor 33 drives the upper and lower ends of the push rack 34 to push in the opposite direction when working, the unwinding racks 42 on both sides of the power cable are controlled to rotate alternately to form a spiral shape to meet the winding needs.

[0041] In order to better demonstrate the copper tape shielding winding device for power cables and its implementation process, this embodiment now proposes an implementation method for the copper tape shielding winding device for power cables, including the following steps:

[0042] The dust removal device, cooling device and detection device installed inside the device housing 1 ensure the cleanliness and suitable temperature of the working environment. The laser rangefinder, CCD visual unit and infrared thermometer and other equipment provide the basic conditions for subsequent monitoring.

[0043] The power cable enters the device through the conveying tube 2 and moves along a straight line to the winding position. The conveying tube 2 is fixed to the support frame 21 to ensure its stability. According to the diameter of the power cable, the push frame 34 is controlled by the micromotor 33, so that the rotating column 41 can rotate, thereby changing the winding angle of the copper strip relative to the power cable, ensuring that the edge of the copper strip does not curl up and forming an ideal spiral winding effect. The position of the second bracket 432 is adjusted to accommodate copper strips of different widths.

[0044] The dual drive motor 23 engages with the external teeth 31 on the rotating sleeve 3 through the drive gear 231, causing the rotating sleeve 3 to rotate, thereby driving the winding assembly 4 to rotate. The servo motor 421 accurately controls the unwinding speed. The magnetic powder brake 422 provides an adjustable braking torque to maintain the tension of the copper strip. The pneumatic tensioning sleeve 423 realizes rapid reel changing operation. The floating roller 425 and the pressure sensor 426 are used in conjunction to monitor and adjust the copper strip tension in real time to avoid over-tightening or loosening. The copper strip is guided by the guide frame 43, passes through the channel between the first bracket 431 and the second bracket 432, and is finally spirally wound onto the power cable. The wound power cable is pressed by the pressing roller 11 and output from the device housing 1.

[0045] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0046] While the embodiments of the present invention have been shown and described, it will be apparent to those skilled in the art that various changes, modifications, substitutions, and alterations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A copper tape shielding winding device for power cables, comprising a device housing (1), characterized in that: A conveying pipe (2) is provided inside the housing (1) of the device. The conveying pipe (2) is movably connected to a rotating sleeve (3). The rotating sleeve (3) is driven to rotate by a dual motor. The rotating sleeve (3) is connected to a winding assembly (4). The winding assembly (4) includes a rotating column (41), an unwinding frame (42) and a guide frame (43). The device also includes a pressing roller (11) for pressing the wound power cable and then outputting it.

2. The copper tape shielding winding device for power cables according to claim 1, characterized in that: A support frame (21) is provided at one end of the delivery pipe (2), a slide groove (22) is provided on the delivery pipe (2), and a dual drive motor (23) is provided on the delivery pipe (2).

3. The copper tape shielding winding device for power cables according to claim 2, characterized in that: The rotating sleeve (3) is sleeved with the slide groove (22), and an end of the rotating sleeve (3) close to the dual drive motor (23) is provided with an external tooth (31), and the external tooth (31) is meshed with the driving gear (231) of the dual drive motor (23).

4. The copper tape shielding winding device for power cables according to claim 1, characterized in that: The unwinding frame (42) is provided with a servo motor (421), a magnetic powder brake (422) and a pneumatic tensioning sleeve (423). The output end of the servo motor (421) is connected to the magnetic powder brake (422), and the magnetic powder brake (422) is connected to the pneumatic tensioning sleeve (423) via a flange, so as to control the unwinding speed and tension.

5. The copper tape shielding winding device for power cables according to claim 4, characterized in that: A floating groove (424) is provided at the lower end of the unwinding frame (42), and a floating roller (425) is provided in the floating groove (424).

6. The copper tape shielding winding device for power cables according to claim 5, characterized in that: The two ends of the floating roller (425) are connected to sliders (4251) through bearings, a guide rod (4241) penetrating the slider (4251) is provided in the floating groove (424), a first spring (4242) is sleeved on the upper end of the guide rod (4241), and a pressure sensor (426) is provided in the floating groove (424).

7. The copper tape shielding winding device for power cables according to claim 1, characterized in that: A first bracket (431) is provided at one end of the guide frame (43), a guide roller (433) is movably connected to the first bracket (431), and a second bracket (432) is sleeved on the guide roller (433).

8. The copper tape shielding winding device for power cables according to claim 1, characterized in that: The upper and lower sides of the rotating sleeve (3) are both provided with limited rotation grooves (32), and the left and right sides of the rotating sleeve (3) between the limited rotation grooves (32) are both provided with embedded micro motors (33), and the output end of the micro motor (33) is fixedly connected to a push frame (34).

9. The copper tape shielding winding device for power cables according to claim 8, characterized in that: The lower end of the rotating column (41) is provided with a slip ring (411), and push rods (412) are provided on both sides. The push rods (412) are engaged with the push frame (34).

10. A method for implementing the copper tape shielding winding device for power cables according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: A dust removal device, a cooling device, and a detection device are provided inside the device housing (1) to ensure a clean working environment and a suitable temperature; Step 2: The power cable enters the device through the conveying pipe (2) and moves along a straight line to the winding position. According to the diameter of the power cable, the inclination angle of the winding assembly (4) is adjusted so that the rotating column (41) can rotate, thereby changing the winding angle of the copper belt relative to the power cable; Step 3: The rotating sleeve (3) is driven by the dual motors to rotate, thereby driving the winding assembly (4) to rotate, and the unwinding frame (42) accurately controls the unwinding speed; Step 4: The copper strip is guided by the guide frame (43) and finally spirally wound onto the power cable. The wound power cable is pressed by the pressing roller (11) and then outputted from the device housing (1).

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