A paper-covered copper stranded wire production device and production method

Abstract

The application belongs to the technical field of cable production and relates to a paper-covered copper stranded wire production device and a production method. The production device comprises a wrapping device and a control system. The wrapping device is provided with a conveying mechanism and a wrapping variable frequency motor. The conveying mechanism comprises a paper disc, a tension sensor, a damping motor, a rotating disc, an encoder and a servo motor. The damping motor is installed on the driving shaft of the paper disc. A paper tape is wound on the paper disc. The paper tape is guided into the copper stranded wire after passing through the rotating disc. The encoder and the servo motor are installed on the rotating disc. The tension sensor obtains the actual tension of the paper tape, and the encoder obtains the actual wrapping angle of the paper tape. A camera for obtaining a wrapping position image is arranged at the wrapping head of the paper tape. The actual wrapping result is obtained based on the image. The control system compares the actual wrapping result with a preset wrapping result. If the actual wrapping result does not meet the requirement of the preset wrapping result, a regulation strategy is started. The problem that the existing paper-covered copper stranded wire production process cannot realize real-time regulation of the wrapping process parameters is solved.

Description

Technical Field

[0001] This invention belongs to the field of cable production technology, specifically relating to a production apparatus and method for paper-insulated copper stranded wire. Background Technology

[0002] Currently, the production process of paper-insulated copper stranded wire has many shortcomings. Key process parameters such as paper tape tension, wrapping pitch, and rejoining width mainly rely on manual experience for adjustment. These fixed process parameters are difficult to adapt to the complex and variable conditions in actual copper stranded wire production. Furthermore, the tooling adaptability is poor, and the adjustment of paper tape tension and paper wrapping head angle also heavily depends on manual experience. This results in inconsistent paper wrapping dimensions and significant fluctuations in the rejoining width.

[0003] In addition, the testing process is severely lagging, and the use of offline sampling inspection makes it impossible to obtain key indicator data such as product dimensions and rejoining width in real time, which increases the workload of manual measurement.

[0004] A search revealed that application number CN201721800192.X discloses a mechanical tensioning device, which mainly consists of an outer diameter tracking wheel for the insulating tape reel, a tension spring system, and a friction pair system. The outer diameter tracking wheel for the insulating tape reel is pressed tightly against the outer layer of the insulating tape with appropriate pressure. As the diameter of the insulating tape reel decreases, the angle of the outer diameter tracking wheel for the insulating tape reel changes and is transmitted to the tension spring, which reduces the tension of the tension spring and reduces the torque of the friction pair, making it match the unloading torque of the insulating tape, and finally achieving a basically constant tension release of the insulating tape.

[0005] However, the device has obvious defects: it does not have a preset tension value, so the tension fluctuates when the paper tray size changes; it lacks a mechanism to adjust the wrapping angle, making it unable to flexibly adapt to different wrapping needs; and the size detection after wrapping is not real-time, making it difficult to implement more precise control over product quality.

[0006] In summary, the existing paper-insulated copper stranded wire production process cannot adjust the wrapping process parameters in real time. Summary of the Invention

[0007] The purpose of this invention is to provide a production apparatus and method for paper-insulated copper stranded wire, which solves the problem that existing paper-insulated copper stranded wire production processes cannot adjust the wrapping process parameters in real time.

[0008] This invention is achieved through the following technical solution:

[0009] This invention discloses a production apparatus for paper-insulated copper stranded wire, including a wrapping device and a control system;

[0010] The wrapping device is equipped with a conveying mechanism and a wrapping frequency conversion motor. The conveying mechanism includes a paper tray, a tension sensor, a damping motor, a turntable, and a paper wrapping head angle dynamic adjustment mechanism.

[0011] The damping motor is mounted on the drive shaft of the paper tray, on which paper tape is wound. After passing through the turntable, the paper tape is guided onto the copper stranded wire. The tension sensor is set on the section of the paper tape that is conveyed between the paper tray and the turntable.

[0012] The paper wrapping head angle dynamic adjustment mechanism includes an encoder and a servo motor, which are mounted on a turntable.

[0013] The variable frequency motor for wrapping is used to adjust the rotation speed of the paper tape wrapping head at the wrapping point; a camera is provided at the paper tape wrapping head, and the camera is used to acquire an image of the wrapping position and obtain the actual wrapping result based on the image.

[0014] Tension sensors, damping motors, encoders, servo motors, and wrapping variable frequency motors are all connected to the control system;

[0015] During the paper tape wrapping process, a tension sensor is used to obtain the actual tension of the paper tape;

[0016] The encoder is used to monitor the wrapping angle and obtain the actual wrapping angle;

[0017] The control system is used to compare the actual wrapping result with the preset wrapping result, and adjust the speed of the damping motor, the rotation direction of the servo motor, or the speed of the wrapping variable frequency motor according to the comparison result.

[0018] Furthermore, the servo motor is connected to the turntable via a gear transmission mechanism.

[0019] Furthermore, two guide rollers are provided above the turntable to guide the paper tape.

[0020] Furthermore, the tension sensor is provided with N, and the control system performs a weighted average of the N measurement values ​​obtained by the tension sensor to obtain an average tension value; the average tension value is then compared with a preset tension range.

[0021] Furthermore, the measured values ​​of N tension sensors F 1. F 2...... F N The corresponding weight is k 1. k 2...... k N ,satisfy Where i = 1, 2, ..., N, The weighting coefficient represents the i-th sensor;

[0022] The sensor closer to the wrapping point has a higher weight, so the expression for calculating the average tension value is:

[0023] ;

[0024] in, Represents the average tension value. This represents the measurement value of the i-th sensor.

[0025] Furthermore, the wrapping angle is the angle between the paper tape and the copper stranded wire; the formula for calculating the wrapping angle is: ;

[0026] Where α is the wrapping angle; d The diameter of the copper stranded wire; v The forward speed of the copper stranded wire; n This represents the rotational speed of the turntable.

[0027] Furthermore, the production apparatus for paper-insulated copper stranded wire also includes a wire feeding device, a straightening device, a traction device, and a take-up device; the copper stranded wire passes through the wire feeding device, the straightening device, the wrapping device, and the traction device in sequence before entering the take-up device.

[0028] This invention also discloses a method for producing paper-insulated copper stranded wire, based on the aforementioned production apparatus for paper-insulated copper stranded wire, comprising the following processes:

[0029] During the paper tape wrapping process, the paper tape is guided onto the copper stranded wire after passing through the turntable. The tension sensor detects the tension of the paper tape in real time to obtain the actual tension of the paper tape; the encoder continuously monitors the wrapping angle to obtain the actual wrapping angle; the camera acquires an image of the wrapping position, and the actual wrapping result is obtained based on the image.

[0030] The control system compares the actual wrapping result with the preset wrapping result. If the actual wrapping result does not meet the preset wrapping result requirements, it determines whether the following two conditions are met:

[0031] Whether the actual tension is within the preset tension range and whether the actual wrapping angle is within the preset wrapping angle range;

[0032] If the actual tension is not within the preset tension range or the actual wrapping angle is not within the preset wrapping angle range, adjust the conditions that do not meet the requirements. After adjustment, if the actual wrapping result still does not meet the preset wrapping result requirements, adjust the speed of the wrapping variable frequency motor.

[0033] If the actual tension is not within the preset tension range and the actual wrapping angle is not within the preset wrapping angle range, the speed of the damping motor is adjusted first according to the actual tension and the preset tension range until the actual tension is within the preset tension range. After adjusting the tension, if the actual wrapping result still does not meet the preset wrapping result requirements, the rotation direction of the servo motor is adjusted according to the actual wrapping angle and the preset wrapping angle range until the actual wrapping angle is within the preset wrapping angle range. If the actual wrapping result still does not meet the preset wrapping result requirements, the speed of the wrapping frequency converter motor is adjusted.

[0034] Furthermore, the adjustment of the damping motor speed based on the actual tension and the preset tension range specifically involves: if the actual tension is greater than the preset tension range, the speed of the damping motor is reduced; if the actual tension is less than the preset tension range, the speed of the damping motor is increased.

[0035] Furthermore, the actual wrapping result includes the actual wrapping pitch or the actual reconnection width; the preset wrapping result is a preset wrapping pitch range or a preset reconnection width range.

[0036] The adjustment of the speed of the wrapping variable frequency motor is specifically as follows: if the actual wrapping pitch is greater than the maximum value of the preset wrapping pitch range, the speed of the wrapping variable frequency motor is increased; if the actual wrapping pitch is less than the minimum value of the preset wrapping pitch range, the speed of the wrapping variable frequency motor is decreased.

[0037] If the actual reconnection width is greater than the maximum value of the preset reconnection width range, the speed of the wrapping inverter motor is reduced; if the actual reconnection width is less than the minimum value of the preset reconnection width range, the speed of the wrapping inverter motor is increased.

[0038] Compared with the prior art, the present invention has the following beneficial technical effects:

[0039] This invention discloses a production apparatus for paper-wrapped copper stranded wire. The wrapping device includes a conveying mechanism and a wrapping variable frequency motor. The conveying mechanism comprises a paper tray, a tension sensor, a damping motor, a turntable, and a dynamic adjustment mechanism for the paper wrapping head angle. The damping motor is mounted on the drive shaft of the paper tray, on which paper tape is wound. The paper tape is guided onto the copper stranded wire after passing through the turntable. The dynamic adjustment mechanism for the paper wrapping head angle includes an encoder and a servo motor, which are mounted on the turntable. The tension sensor, damping motor, encoder, servo motor, and wrapping variable frequency motor are connected to a control system. The tension sensor acquires the actual tension of the paper tape in real time, and the encoder monitors the wrapping angle to obtain the actual wrapping angle. A camera is installed at the paper tape wrapping head to acquire an image of the wrapping position, and the actual wrapping result is obtained based on the image. The control system compares the actual wrapping result with a preset wrapping result. If the actual wrapping result does not meet the preset requirements, the speed of the wrapping variable frequency motor is adjusted according to the comparison result to ensure the wrapping result. This significantly improves the consistency of batch products, achieves efficient utilization of paper tape material while ensuring quality, and reduces production costs.

[0040] Furthermore, by setting up N tension sensors, paper tape tension data can be collected from different locations, avoiding measurement errors caused by local anomalies of a single sensor (such as paper tape wrinkles or sensor contact deviation). The weighted averaging algorithm makes the average tension value closer to the actual working conditions. Based on the more accurate comparison between the average tension value and the preset range, the control system's adjustment commands to the damping motor are more reliable, reducing frequent adjustments caused by instantaneous fluctuations, avoiding over-adjustment of paper tape tension, and ensuring the smoothness of the paper tape winding process. In scenarios such as paper tape joints and minor thickness variations, multi-sensor data can effectively smooth local disturbances, making tension adjustment more fault-tolerant, reducing the impact of paper tape quality fluctuations on wrapping quality, and improving the equipment's adaptability to different batches of paper tape.

[0041] This invention discloses a method for producing paper-insulated copper stranded wire. A tension sensor detects the tension of the paper tape in real time to obtain the actual tension; an encoder continuously monitors the wrapping angle to obtain the actual wrapping angle; a camera captures an image of the wrapping position, and the actual wrapping result is obtained based on the image. The control system compares the actual wrapping result with a preset wrapping result. If the actual wrapping result does not meet the preset requirements, it determines whether the actual tension is within the preset tension range and / or whether the actual wrapping angle is within the preset wrapping angle range. If only one of these conditions is not met, one condition is adjusted. If the actual wrapping result still does not meet the preset requirements, the speed of the wrapping variable frequency motor is adjusted until the requirements are met. If both conditions are not met, the tension is adjusted first, then the wrapping angle, and finally the speed of the wrapping variable frequency motor. Tension, wrapping angle, and wrapping head speed all affect the wrapping result, but to varying degrees. This invention, through optimized design, achieves a decreasing degree of influence from tension, wrapping angle, and wrapping head speed, thus prioritizing these parameters during adjustment. This invention prioritizes ensuring stable tension, and then uses a dynamic adjustment mechanism for the paper wrapping head angle to ensure the wrapping angle. When neither of these two conditions can meet the requirements, the speed of the wrapping variable frequency motor is adjusted. The three work together to ensure that the paper tape is precisely wrapped around the copper stranded wire, ensuring the uniformity and consistency of the wrapping, which is beneficial to improving the insulation performance and appearance quality of the product. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of an assembly line for a paper-insulated copper stranded wire production device according to the present invention;

[0043] Figure 2 This is a schematic diagram of the wrapping device provided by the present invention.

[0044] The components include: 1. Wire feeding device; 2. Straightening device; 3. Wrapping device; 4. Traction device; 5. Wire take-up device; 6. Paper tray; 7. Tension sensor; 8. Damping motor; 9. Paper tape; 10. Turntable; 11. Encoder; 12. Servo motor; 13. Camera; and 14. Copper stranded wire. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of the present invention clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention; that is, the described embodiments are only a part of the embodiments of the present invention, and not all of them.

[0046] The components described and illustrated in the accompanying drawings and embodiments of this invention can be arranged and designed in various different configurations. Therefore, the detailed description of the embodiments of the invention provided in the following drawings is not intended to limit the scope of the claimed invention, but merely to illustrate one selected embodiment of the invention. All other embodiments obtained by those skilled in the art based on the accompanying drawings and embodiments of this invention without inventive effort are within the scope of protection of this invention.

[0047] like Figure 1 As shown, the present invention provides a production apparatus for paper-insulated copper stranded wire, comprising a wire feeding device 1, a straightening device 2, a wrapping device 3, a traction device 4, and a take-up device 5 connected in sequence; the copper stranded wire 14 passes through the wire feeding device 1, the straightening device 2, the wrapping device 3, and the traction device 4 in sequence before entering the take-up device 5.

[0048] like Figure 2 As shown, the wrapping device 3 is equipped with a conveying mechanism, which includes a paper tray 6, a tension sensor 7, a damping motor 8, a turntable 10, and a dynamic adjustment mechanism for the paper wrapping head angle. The damping motor 8 is mounted on the drive shaft of the paper tray 6. Paper tape 9 is wound on the paper tray 6, and the paper tape 9 is guided onto the copper stranded wire 14 after passing through the turntable 10. Two guide rollers are fixed on the upper surface of the turntable 10 to guide the paper tape 9.

[0049] Specifically, the servo motor 12 is connected to the turntable 10 via a gear transmission mechanism, and the servo motor 12 is used to drive the turntable 10 to rotate.

[0050] The paper wrapping head angle dynamic adjustment mechanism is installed on the lower side of the turntable 10, including encoder 11 and servo motor 12. Encoder 11 is used to monitor the wrapping angle.

[0051] A tension sensor 7 is installed in the section of the paper tape 9 conveyed between the paper tray 6 and the turntable 10. The tension sensor 7 is a strain gauge type tension sensor, used to detect the tension of the paper tape 9 in real time. Specifically:

[0052] When the tension of the paper tape 9 acts on the elastic body of the tension sensor 7, the elastic body undergoes a slight deformation. The strain gauge attached to the elastic body deforms with the elastic body, and its resistance value changes. The tension sensor 7 acquires the resistance signal and sends it to the control system. The control system converts the resistance signal into a current signal. The control system determines whether the current signal deviates from the preset range. If it deviates from the preset range, it indicates that the tension of the paper tape 9 is too high or too low. It is necessary to adjust the speed of the damping motor 8, thereby adjusting the unwinding speed of the paper tray 6 to ensure that the tension of the paper tape 9 remains stable within the preset range and to guarantee the wrapping quality.

[0053] For example, if the preset range is 10±1 mA, when the current signal of the tension sensor 7 deviates from the range of 10±1 mA, the damping motor 8 responds quickly and adjusts the unwinding speed of the paper tray 6 to ensure that the tension of the paper tape 9 is always stable within the precise range of 15N±0.15N, thereby ensuring the wrapping quality.

[0054] More preferably, multiple tension sensors 7 are provided, and the tension sensors 7 are located above and below the paper tape 9, which can more accurately measure the tension of the paper tape 9.

[0055] Assuming there are N tension sensors 7, N current signals can be obtained. The average tension value is obtained by weighting and averaging the N current signals.

[0056] The measured values ​​of N tension sensors 7 are F 1. F 2...... F N The corresponding weight is k 1. k 2...... k N ,satisfy Where i = 1, 2, ..., N, The weighting coefficient represents the i-th sensor;

[0057] The sensor closer to the wrapping point has a higher weight, so the expression for calculating the average tension value is:

[0058] ;

[0059] in, Represents the average tension value. This represents the measurement value of the i-th sensor.

[0060] Specifically, the paper wrapping head angle dynamic adjustment mechanism monitors the position of the turntable 10 through the encoder 11, thereby obtaining the angle between the paper tape 9 and the copper stranded wire 14, i.e., the wrapping angle, as explained below:

[0061] Turntable 10 is the core component that drives the paper pack head to rotate as a whole, and its rotation angle directly determines the winding direction and position of paper tape 9.

[0062] The angle between the paper tape 9 and the axis of the copper stranded wire 14 is usually called the wrapping angle, which is determined by the rotational position of the turntable 10 and the forward speed of the copper stranded wire 14. When the turntable 10 rotates to a specific angle, the output direction of the paper tape 9 forms a fixed angle with respect to the axis of the copper stranded wire 14.

[0063] The encoder 11 is rigidly connected to the rotating shaft of the turntable 10. Its function is to output the absolute position (such as the rotation angle value, in degrees or pulse number) or relative displacement (such as the number of rotations or the number of pulses) of the turntable 10 in real time.

[0064] Since the mechanical structure of the turntable 10 has a pre-set correspondence between the "rotation angle" and the "paper tape 9 output direction", for example, when the turntable 10 rotates 30°, the paper tape 9 output direction forms a 60° angle with the axis of the copper stranded wire 14. Therefore, the position signal monitored by the encoder 11 can be directly mapped to the current spatial angle of the paper tape 9.

[0065] The angle between the paper tape 9 and the copper stranded wire 14 (i.e., the wrapping angle α) is essentially the angle between the winding path of the paper tape 9 and the axis of the copper stranded wire 14, and its calculation formula can be simplified as follows: ;in, d The diameter of the copper stranded wire 14; v The forward speed of the copper stranded wire 14; n The rotational speed of turntable 10.

[0066] In the dynamic adjustment mechanism, the core function of the encoder 11 is to determine whether the current paper tape 9 output direction is consistent with the preset angle by monitoring the real-time position of the turntable 10. For example, when the encoder 11 detects that the position of the turntable 10 deviates from the set value (such as the target angle corresponding to the position of the turntable 10 being 180°, but the actual position being 175°), the control system will drive the turntable 10 to rotate 5° to compensate through the servo motor 12 until the position fed back by the encoder 11 matches the target angle, thereby ensuring that the angle of the paper tape 9 meets the requirements.

[0067] The wrapping device 3 also includes a wrapping variable frequency motor, which is used to precisely control the rotation speed of the wrapping head of the paper tape 9.

[0068] A camera 13 is installed next to the wrapping point to acquire images of the wrapping position. Based on the images, actual measurement data is obtained and compared with preset values ​​to determine whether the actual measurement data is appropriate. If it is not appropriate, the control strategy is activated.

[0069] Different products have different requirements. Some products require a wrapping pitch, while others require a reconnection. The wrapping pitch and reconnection width are core parameters for the wrapping quality of paper-insulated copper stranded wire. If the wrapping pitch is too large, the paper tape 9 will not cover tightly, and gaps may appear; if it is too small, it will increase the consumption of paper tape 9, and may even cause abnormal diameter of copper stranded wire 14 due to excessive overlap. Excessive reconnection width will directly affect the insulation and protection performance. Too wide a width wastes material, while too narrow a width may result in missing wrapping. The actual measurement data of this invention includes the actual wrapping pitch or the actual reconnection width.

[0070] When the product requires a wrapping pitch, the control system compares the actual wrapping pitch with a preset wrapping pitch range. If the actual wrapping pitch does not meet the preset wrapping pitch range requirement, it determines whether the following two conditions are met:

[0071] Whether the actual tension is within the preset tension range and whether the actual wrapping angle is within the preset wrapping angle range;

[0072] If the actual tension is not within the preset tension range or the actual wrapping angle is not within the preset wrapping angle range, adjust the conditions that do not meet the requirements. After adjustment, if the actual wrapping result still does not meet the preset wrapping result requirements, adjust the speed of the wrapping variable frequency motor.

[0073] If the actual tension is not within the preset tension range and the actual wrapping angle is not within the preset wrapping angle range, the speed of the damping motor 8 is adjusted first according to the actual tension and the preset tension range. After adjusting the tension, if the actual wrapping result still does not meet the preset wrapping result requirements, the rotation direction of the servo motor 12 is adjusted according to the actual wrapping angle and the preset wrapping angle range. If the actual wrapping result still does not meet the preset wrapping result requirements, the speed of the wrapping frequency converter motor is adjusted. This avoids insufficient paper tape coverage due to excessive pitch or excessive overlap of paper tape 9 due to excessively small pitch, thus saving paper tape 9 material.

[0074] When the product requires wrapping and re-swiping, the control system compares the actual re-swiping width with the preset re-swiping width range. If the actual re-swiping width does not meet the preset re-swiping width range requirement, it determines whether the following two conditions are met:

[0075] Whether the actual tension is within the preset tension range and whether the actual wrapping angle is within the preset wrapping angle range;

[0076] If the actual tension is not within the preset tension range or the actual wrapping angle is not within the preset wrapping angle range, adjust the conditions that do not meet the requirements. After adjustment, if the actual wrapping result still does not meet the preset wrapping result requirements, adjust the speed of the wrapping variable frequency motor.

[0077] If the actual tension is not within the preset tension range and the actual wrapping angle is not within the preset wrapping angle range, the speed of the damping motor 8 will be adjusted first according to the actual tension and the preset tension range. After adjusting the tension, if the actual wrapping result still does not meet the preset wrapping result requirements, the rotation direction of the servo motor 12 will be adjusted according to the actual wrapping angle and the preset wrapping angle range. If the actual wrapping result still does not meet the preset wrapping result requirements, the speed of the wrapping frequency converter motor will be adjusted.

[0078] In the above-mentioned control process, the adjustment of the speed of the damping motor 8 based on the actual tension and the preset tension range specifically involves: if the actual tension is greater than the preset tension range, the speed of the damping motor 8 is reduced; if the actual tension is less than the preset tension range, the speed of the damping motor 8 is increased. This invention employs fuzzy regulation; as long as the actual tension is not within the preset tension range, regardless of whether the actual tension is large or small, it is uniformly adjusted to the preset tension range.

[0079] The adjustment of the winding frequency converter motor speed is specifically as follows: if the actual winding pitch is greater than the maximum value of the preset winding pitch range, the speed of the winding frequency converter motor is increased. By increasing the speed of the winding frequency converter motor, the pitch can be reduced, avoiding insufficient paper tape coverage due to excessive pitch; if the actual winding pitch is less than the minimum value of the preset winding pitch range, the speed of the winding frequency converter motor is reduced, which can reduce excessive overlap of paper tape 9 and save paper tape material.

[0080] If the actual overlap width is greater than the maximum value of the preset overlap width range, reduce the speed of the wrapping inverter motor to reduce the overlap and avoid wasting paper tape. If the actual overlap width is less than the minimum value of the preset overlap width range, increase the speed of the wrapping inverter motor to increase the overlap, ensure protective performance, and avoid product scrapping due to missing packaging.

[0081] This invention directly captures images of the wrapping position using camera 13, providing a direct view of the actual wrapping status. This overcomes the limitations of traditional methods that rely solely on indirect calculations using mechanical parameters, making detection more direct and accurate. The wrapping pitch directly affects the insulation performance and mechanical strength of the copper stranded wire 14, while the reconnection width relates to the sealing performance of the insulation layer. For the copper stranded wire 14 after paper wrapping, this invention utilizes video detection technology to measure the wrapping pitch and reconnection width in real time, ensuring that the reconnection width or wrapping pitch meets the requirements. This significantly improves the consistency of batch products, achieving efficient utilization of paper tape material and reducing production costs while ensuring quality.

[0082] The features and performance of the present invention will be further described in detail below with reference to embodiments.

[0083] Taking the specific specifications of copper wire as an example, the following baseline parameters are preset: the diameter of copper stranded wire 14 is set to 23mm, the width of paper tape 9 is 25mm, the preset rejoining width is 5mm, the preset tension range of paper tape 9 is 15N±0.15N, and the preset wrapping angle range is 70°±1°. The specific production process is as follows:

[0084] After passing through the wire feeding device 1 and the straightening device 2, the copper stranded wire 14 enters the wrapping device 3, where the paper tape 9 is wrapped. After wrapping, it passes through the traction device 4 and enters the take-up device 5 for take-up.

[0085] During the wrapping process of paper tape 9, tension sensor 7 detects the tension of paper tape 9 in real time to obtain the actual tension;

[0086] Meanwhile, encoder 11 continuously monitors the wrapping angle to obtain the actual wrapping angle;

[0087] Camera 13 acquires images of the wrapping position in real time, obtains the actual re-wrap width based on the image, compares the actual re-wrap width with the preset re-wrap width range, and if it is within the preset re-wrap width range, it means that the wrapping parameters are appropriate.

[0088] If the actual reconnection width does not meet the preset reconnection width range requirement, then determine whether the following two conditions are met: whether the actual tension is within the preset tension range and whether the actual wrapping angle is within the preset wrapping angle range.

[0089] If the judgment result is that the actual tension is not within the preset tension range and the actual wrapping angle is not within the preset wrapping angle range, then the speed of the damping motor 8 will be adjusted according to the actual tension and the preset tension range to adjust the unwinding speed of the paper tray 6, so as to ensure that the tension of the paper tape 9 is always stable within the precise range of 15N±0.15N, thereby ensuring the wrapping quality.

[0090] After adjusting the tension, if the actual re-connection width still does not meet the preset re-connection width range requirement, the rotation direction of the servo motor 12 is adjusted according to the actual wrapping angle and the preset wrapping angle range. The servo motor 12 drives the turntable 10 to rotate, correcting the actual wrapping angle to the preset wrapping angle range, thus ensuring the accuracy of the wrapping angle.

[0091] If the actual reconnection width is found to be greater than the maximum value of the preset reconnection width range, the speed of the wrapping variable frequency motor is reduced to ensure that the wrapping effect meets the requirements.

[0092] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the protection scope of the present invention.

Claims

1. A production apparatus for paper-insulated copper stranded wire, characterized in that, Includes a wrapping device (3) and a control system; The wrapping device (3) is equipped with a conveying mechanism and a wrapping frequency conversion motor. The conveying mechanism includes a paper tray (6), a tension sensor (7), a damping motor (8), a turntable (10), and a paper pack head angle dynamic adjustment mechanism. The damping motor (8) is mounted on the drive shaft of the paper tray (6), and the paper tray (6) is wound with paper tape (9). After passing through the turntable (10), the paper tape (9) is guided onto the copper stranded wire (14). The tension sensor (7) is set on the section of the paper tape (9) that is transmitted between the paper tray (6) and the turntable (10). The paper pack head angle dynamic adjustment mechanism includes an encoder (11) and a servo motor (12), which are mounted on a turntable (10); The variable frequency motor for wrapping is used to adjust the rotation speed of the wrapping head of the paper tape (9) at the wrapping point; a camera (13) is provided at the wrapping head of the paper tape (9), and the camera (13) is used to obtain an image of the wrapping position and obtain the actual wrapping result based on the image; The tension sensor (7), damping motor (8), encoder (11), servo motor (12) and wrapping frequency converter are all connected to the control system; During the wrapping process of the paper tape (9), the tension sensor (7) is used to obtain the actual tension of the paper tape (9); The encoder (11) is used to monitor the wrapping angle and obtain the actual wrapping angle; The control system is used to compare the actual wrapping result with the preset wrapping result, and adjust the speed of the damping motor (8), the rotation direction of the servo motor (12) or the speed of the wrapping frequency converter motor according to the comparison result; The tension sensor (7) is provided with N, and the control system performs a weighted average of the N measurement values ​​obtained by the tension sensor (7) to obtain the average tension value; Compare the average tension value with the preset tension range; The method for producing paper-insulated copper stranded wire includes the following processes: During the paper tape (9) wrapping process, the paper tape (9) is guided onto the copper stranded wire (14) after passing through the turntable (10). The tension sensor (7) detects the tension of the paper tape (9) in real time and obtains the actual tension of the paper tape (9). The encoder (11) continuously monitors the wrapping angle and obtains the actual wrapping angle. The camera (13) acquires the image of the wrapping position and obtains the actual wrapping result based on the image. The control system compares the actual wrapping result with the preset wrapping result. If the actual wrapping result does not meet the preset wrapping result requirements, it determines whether the following two conditions are met: Whether the actual tension is within the preset tension range and whether the actual wrapping angle is within the preset wrapping angle range; If the actual tension is not within the preset tension range or the actual wrapping angle is not within the preset wrapping angle range, adjust the conditions that do not meet the requirements. After adjustment, if the actual wrapping result still does not meet the preset wrapping result requirements, adjust the speed of the wrapping variable frequency motor. If the actual tension is not within the preset tension range and the actual wrapping angle is not within the preset wrapping angle range, the speed of the damping motor (8) is adjusted first according to the actual tension and the preset tension range until the actual tension is within the preset tension range. After adjusting the tension, if the actual wrapping result still does not meet the preset wrapping result requirements, the rotation direction of the servo motor (12) is adjusted according to the actual wrapping angle and the preset wrapping angle range until the actual wrapping angle is within the preset wrapping angle range. If the actual wrapping result still does not meet the preset wrapping result requirements, the speed of the wrapping frequency converter motor is adjusted.

2. The production apparatus for paper-insulated copper stranded wire according to claim 1, characterized in that, The servo motor (12) is connected to the turntable (10) via a gear transmission mechanism.

3. The production apparatus for paper-insulated copper stranded wire according to claim 1, characterized in that, Two guide rollers are provided above the turntable (10) for guiding the paper tape (9).

4. The production apparatus for paper-insulated copper stranded wire according to claim 1, characterized in that, The measured values ​​of N tension sensors (7) F 1. F 2...... F N The corresponding weight is k 1. k 2...... k N ,satisfy Where i = 1, 2, ..., N, The weighting coefficient represents the i-th sensor; The sensor closer to the wrapping point has a higher weight, so the expression for calculating the average tension value is: ； in, Represents the average tension value. This represents the measurement value of the i-th sensor.

5. The production apparatus for paper-insulated copper stranded wire according to claim 1, characterized in that, The wrapping angle is the angle between the paper tape (9) and the copper stranded wire (14); the formula for calculating the wrapping angle is: ; Where α is the wrapping angle; d The diameter of the copper stranded wire (14); v The forward speed of the copper stranded wire (14); n is the rotational speed of the turntable (10).

6. The production apparatus for paper-insulated copper stranded wire according to claim 1, characterized in that, The production device for paper-insulated copper stranded wire also includes a wire feeding device (1), a straightening device (2), a traction device (4) and a take-up device (5); the copper stranded wire (14) passes through the wire feeding device (1), the straightening device (2), the wrapping device (3) and the traction device (4) in sequence, and then enters the take-up device (5).

7. The production apparatus for paper-insulated copper stranded wire according to claim 1, characterized in that, The adjustment of the speed of the damping motor (8) based on the actual tension and the preset tension range is specifically as follows: if the actual tension is greater than the preset tension range, the speed of the damping motor (8) is reduced. If the actual tension is less than the preset tension range, the speed of the damping motor (8) is increased.

8. The production apparatus for paper-insulated copper stranded wire according to claim 1, characterized in that, The actual wrapping result includes the actual wrapping pitch or the actual reconnection width; the preset wrapping result is a preset wrapping pitch range or a preset reconnection width range. The adjustment of the speed of the wrapping variable frequency motor is specifically as follows: if the actual wrapping pitch is greater than the maximum value of the preset wrapping pitch range, then the speed of the wrapping variable frequency motor is increased. If the actual wrapping pitch is less than the minimum value of the preset wrapping pitch range, then reduce the speed of the wrapping variable frequency motor. If the actual reconnection width is greater than the maximum value of the preset reconnection width range, then reduce the speed of the wrapping variable frequency motor; If the actual reconnection width is less than the minimum value of the preset reconnection width range, then increase the speed of the wrapping variable frequency motor.

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