Battery cell coating forming equipment for cable processing and use method of battery cell coating forming equipment

Abstract

The invention discloses battery core coating forming equipment for cable processing and a use method thereof, and relates to the technical field of cable processing equipment. According to the battery cell coating forming equipment for cable processing, through the integrated design of the traction machine, the preheating device, the coating mold, the controller, the temperature sensor and the visual detection system, the controller is configured to receive a speed signal of the traction machine and a temperature signal of the temperature sensor at the same time so as to dynamically adjust the heating power of the preheating device; according to the equipment, the heating requirement can be pre-judged and compensated in real time according to the actual advancing speed of the battery cell main body, meanwhile, the control model is continuously optimized through the visual quality feedback at the outlet side, and the heating efficiency is improved. The cable can obtain the best heat bonding effect under different operation speeds and environment conditions, and the quality of the cable to be processed is improved.

Description

Technical Field

[0001] This invention relates to the field of cable processing equipment technology, specifically to a core coating molding equipment for cable processing and its usage method. Background Technology

[0002] In the field of wire and cable manufacturing, especially in the production of communication cables, the main body of the battery core is usually a metal conductor wire core, which needs to be covered with a uniform insulation layer to ensure the electrical insulation performance and signal transmission quality of the cable. Existing battery core covering and forming equipment usually includes a wire feeding device, a traction mechanism, a preheating device, and a covering mold. The traction mechanism pulls the battery core body at a uniform speed, the preheating device heats the battery core body, and then the covering mold extrudes the molten insulation material and covers the surface of the battery core body. After cooling, the finished cable is formed. In order to ensure the adhesion between the insulation layer and the conductor and avoid cold spots or internal voids, it is a common practice in the industry to preheat the battery core body before it enters the covering mold.

[0003] In existing technologies, preheating devices typically employ a constant temperature control mode. This involves setting a fixed preheating temperature according to process requirements and controlling the heater's operation via a temperature controller to maintain the preheating zone near this set temperature. However, in actual production, the speed of the battery cell body is not constant. The production line may experience start-up, acceleration, deceleration, or switching between different product specifications at different stages, causing variations in linear speed. The heat absorbed per unit length of the battery cell body is inversely proportional to its speed. When the speed changes, if the preheating temperature remains constant, the actual surface temperature reached by the battery cell body will fluctuate. Furthermore, changes in ambient temperature and differences in the temperature of the incoming materials for the battery cell body will also affect the preheating process. The actual temperature after preheating has an impact. If the temperature of the main body of the battery cell is too low after preheating, the molten insulation material will cool rapidly when it comes into contact with the conductor, resulting in poor interfacial bonding and easy generation of internal stress lines or even delamination. If the preheating temperature is too high, the conductor surface may oxidize, affecting the conductivity. At the same time, the insulation material may also undergo local degradation due to overheating, generating bubbles or carbonization points, which seriously affects the stability of high-frequency signal transmission. Traditional constant temperature preheating methods lack dynamic response capability to linear speed and environmental interference, making it difficult to maintain the optimal thermal bonding temperature under all working conditions. In view of the shortcomings of the existing technology, this invention provides a battery cell coating molding equipment for cable processing and its usage method to solve the above problems. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a core coating molding device for cable processing and its usage method. Through the integrated design of a traction machine, a preheating device, a coating mold, a controller, a temperature sensor, and a vision inspection system, the controller is configured to simultaneously receive speed signals from the traction machine and temperature signals from the temperature sensor to dynamically adjust the heating power of the preheating device. It also receives image signals from the vision inspection system to correct historical temperature control parameters, achieving control of three variables: speed, temperature, and quality. This device can predict and compensate for heating requirements in real time based on the actual travel speed of the core body. Simultaneously, through visual quality feedback from the exit side, it continuously optimizes the control model, ensuring that the cable achieves optimal thermal bonding under different operating speeds and environmental conditions, thus improving the consistency and reliability of the processed cable.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a core coating and molding device for cable processing, comprising: A traction machine, a preheating device, and a coating mold are arranged sequentially along the direction of travel of the battery cell body; It also includes a controller and a temperature sensor and a vision inspection system respectively connected to the controller; The temperature sensor is located between the preheating device and the coating mold, and is used to collect the real-time temperature of the battery cell body before it enters the coating mold. The visual inspection system is located on the exit side of the coating mold and is used to acquire surface images of the coating layer after it has been formed. The controller is configured to: receive the speed signal of the traction machine and the temperature signal of the temperature sensor, dynamically adjust the heating power of the preheating device; and receive the image signal of the vision detection system to correct the historical temperature control parameters.

[0006] Preferably, the controller includes a feedforward control module and a feedback control module; The feedforward control module is used to calculate the basic heating power required to maintain the target preheating temperature based on the real-time speed signal of the traction machine. The feedback control module is used to compare the real-time temperature collected by the temperature sensor with the target preheating temperature, correct the basic heating power according to the difference, and generate the final heating control command to be output to the preheating device.

[0007] Preferably, the vision inspection system includes an industrial camera and an image processing unit, the image processing unit being integrated inside the controller and used to identify internal stress lines and / or bubble protrusion defects on the surface of the coating layer.

[0008] Preferably, the visual inspection system further includes a marking device, which is connected to the controller; The controller is also used to control the marking device to mark the corresponding coating layer position when the image processing unit identifies a defect.

[0009] Preferably, the controller also has a built-in data storage unit. When a defect is detected, the data storage unit retrieves the historical preheating temperature data corresponding to the defective cell body and determines whether the historical preheating temperature data deviates from the preset normal temperature range.

[0010] Preferably, it further includes a surface pretreatment device disposed in front of the preheating device, the surface pretreatment device being connected to the controller and used to clean the surface of the battery cell body.

[0011] Preferably, the controller is also used to generate control instructions to adjust the operating parameters of the surface pretreatment device and / or issue an alarm signal to check the oil stains on the surface of the battery cell when the data storage unit determines that the historical preheating temperature has not deviated from the normal range, but the visual inspection system continues to detect defects.

[0012] Preferably, the temperature sensor is a non-contact infrared temperature sensor, and the temperature sensor probe is aligned with and focused on the surface of the battery cell body at the entrance of the coating mold.

[0013] Preferably, the battery cell body is the conductor core of a communication cable, and the covering mold is an extruder head used for extruding and forming an insulation layer.

[0014] This invention also discloses a method of using a core coating molding equipment for cable processing, the method comprising the following steps: Step S1: The traction machine pulls the main body of the battery cell forward and sends the speed signal of the traction machine to the controller in real time; Step S2: Based on the current speed signal and the preset target preheating temperature, the controller calculates the basic heating power through the feedforward control module and controls the preheating device to heat the battery cell body. Step S3: The temperature sensor located behind the preheating device detects the actual surface temperature of the battery cell body before it enters the coating mold in real time and feeds the signal back to the controller. In step S4, the feedback control module of the controller compares the actual surface temperature with the target preheating temperature and fine-tunes the heating power of the preheating device in real time. Step S5: The temperature-controlled battery cell body enters the coating mold for insulation layer coating, and the formed coating layer proceeds to the vision inspection system. Step S6: The visual inspection system acquires images of the coating surface to identify whether there are internal stress lines or bubble protrusion defects. Step S7: If a defect is detected, the controller controls the marking device to mark the defect location, and at the same time the data storage unit retrieves the historical preheating temperature data corresponding to the main body of the cell segment for comparison and analysis. In step S8, if the historical temperature data is normal, the controller adjusts the operating parameters of the surface pretreatment device and prompts the operator to check the surface condition of the battery cell body.

[0015] The technical effects and advantages of this invention are as follows: 1. This cable processing core coating molding equipment integrates a traction machine, a preheating device, a coating mold, a controller, a temperature sensor, and a vision inspection system. The controller is configured to simultaneously receive speed signals from the traction machine and temperature signals from the temperature sensor to dynamically adjust the heating power of the preheating device, and to receive image signals from the vision inspection system to correct historical temperature control parameters. This achieves control of three variables: speed, temperature, and quality. The equipment can predict and compensate for heating requirements in real time based on the actual travel speed of the core body. At the same time, it continuously optimizes the control model through visual quality feedback from the exit side, ensuring that the cable achieves the best thermal bonding effect under different operating speeds and environmental conditions, thereby improving the quality consistency and reliability of the processed cable.

[0016] 2. This cable processing core coating molding equipment, through the design of a feedforward control module and a feedback control module within the controller, achieves pre-compensation for speed changes by rapidly calculating the basic heating power based on the real-time speed signal of the traction machine, thus solving the problem of lag in traditional control response. The feedback control module, on the other hand, performs real-time fine-tuning of the basic power based on the measured temperature of the temperature sensor, eliminating the influence of environmental interference and model errors. This dual control structure of feedforward and feedback ensures both the rapid response capability of heating power to changes in linear speed and the accuracy of preheating temperature, avoiding problems such as poor adhesion due to excessively low preheating temperature and conductor oxidation or insulation layer degradation due to excessively high temperature.

[0017] 3. This cable processing core coating molding equipment, through the collaborative work of a vision inspection system and a controller's built-in data storage unit, can automatically retrieve historical preheating temperature data corresponding to the core body of the section when internal stress lines or bubble protrusions are detected on the surface of the coating layer. This data is then compared and analyzed to determine whether the defect is caused by abnormal preheating temperature. If the historical temperature data is normal but the defect continues to appear, the controller can further adjust the working parameters of the surface pretreatment device and issue an alarm. The equipment combines quality inspection with process parameters, and with the design of a marking device, it not only achieves automatic marking of defects but also provides data support for process optimization and equipment fault diagnosis. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is the front view of the present invention; Figure 3 For the present invention Figure 2 Enlarged view of the temperature sensor and preheating device in section A; Figure 4 This is a top view of the present invention; Figure 5 This is a schematic diagram of the structure of the visual inspection system and marking device of the present invention; Figure 6 This is a flowchart of the method steps of the present invention; Figure 7 This is a diagram showing the internal modules and signal interactions of the controller in this invention.

[0020] In the diagram: 1. Traction machine; 2. Preheating device; 3. Coating mold; 4. Controller; 5. Temperature sensor; 6. Vision inspection system; 61. Industrial camera; 7. Marking device; 8. Surface pretreatment device; 100. Battery cell body; 200. Coating layer. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0022] This embodiment discloses a core coating molding device for cable processing, according to the attached... Figure 1 To be continued Figure 7As shown, the device includes a traction machine 1, a preheating device 2, and a coating mold 3 arranged sequentially along the travel direction of the battery cell body 100. The battery cell body 100 is typically the conductor core of a communication cable, such as annealed copper wire. The coating mold 3 is specifically an extruder head used for extruding and molding an insulation layer. The device also includes a controller 4 and a temperature sensor 5 and a vision inspection system 6 connected to the controller 4. The controller 4 is typically implemented using a programmable logic controller (PLC) paired with an industrial control computer, responsible for data acquisition, logic operations, and sending control commands. The temperature sensor 5 is installed between the preheating device 2 and the coating mold 3, with its probe precisely aligned and focused. At the entrance of the coating mold 3, a temperature sensor 5 is used to collect the real-time surface temperature of the battery cell body 100 before it enters the coating mold, ensuring the timeliness and accuracy of temperature feedback. A vision inspection system 6 is installed on the exit side of the coating mold 3 to collect surface images of the coating layer 200 after it is formed. The controller 4 is configured to receive the rotational speed or linear speed signal of the traction machine 1 and the temperature signal of the temperature sensor 5, and dynamically adjust the heating power of the preheating device 2 through an internal algorithm. At the same time, it receives the image signal of the vision inspection system 6, learns and corrects the historical temperature control parameters, and forms a complete closed-loop control of speed, temperature and quality.

[0023] According to the appendix Figure 7 As shown, the controller 4 includes a feedforward control module and a feedback control module. The feedforward control module is used to calculate the basic heating power required to maintain the target preheating temperature based on the real-time speed signal of the traction machine 1 and the preset parameters such as the material, wire diameter, and specific heat capacity of the battery cell body 100. For example, when the traction speed increases, the feedforward module quickly calculates and increases the basic power to compensate for the increase in heat absorption caused by the high speed. The feedback control module is used to compare the real-time temperature collected by the temperature sensor 5 with the target preheating temperature set by the process, calculate the difference between the two, usually by PID calculation, and fine-tune the basic heating power according to the difference to generate the final accurate heating control command output to the preheating device 2. This combination of feedforward and feedback control ensures both fast response and accurate control.

[0024] According to the appendix Figure 5 and appendix Figure 7As shown, the vision inspection system 6 includes an industrial camera 61 and an image processing unit. The industrial camera 61 is a high-resolution CCD camera, equipped with a suitable lens and light source to clearly capture the fast-moving surface of the coating layer 200. The image processing unit is integrated into the controller 4 as a core software algorithm module. The image processing unit has a built-in defect recognition algorithm, which is specifically used to identify internal stress lines and / or bubble protrusion defects on the surface of the coating layer 200. These defects are a direct manifestation of improper preheating temperature: if the temperature is too low, internal stress lines will easily be generated due to poor melt flow, while if the temperature is too high, the material may decompose and generate bubbles.

[0025] According to the appendix Figure 5 As shown, the visual inspection system 6 is further equipped with a marking device 7. The marking device 7 is connected to and controlled by the controller 4. The controller 4 is also used to immediately control the marking device 7 to make physical markings, such as paint spots or labels, at the corresponding coating layer 200 position when the image processing unit identifies a defect, so that subsequent processes can easily identify it.

[0026] According to the appendix Figure 5 and appendix Figure 7 As shown, the controller 4 also has a built-in data storage unit. The data storage unit continuously records the real-time temperature data and the corresponding traction speed of each segment of the battery cell body 100 when it passes through the preheating device 2. When the vision inspection system 6 identifies a defect, the data storage unit will immediately retrieve the historical preheating temperature data corresponding to the defective segment of the battery cell body 100 and compare it with the preset normal temperature range to determine whether the defect is directly caused by the abnormal preheating temperature.

[0027] According to the appendix Figure 1 Appendix Figure 3 and appendix Figure 4 As shown, it is particularly important to emphasize that the equipment also includes a surface pretreatment device 8 located in front of the preheating device 2. The surface pretreatment device 8 is connected to the controller 4. Specifically, the surface pretreatment device 8 can be a set of rotating brush wheels or an ultrasonic cleaning unit, and is equipped with a drying mechanism to thoroughly clean the surface of the battery cell body 100, removing oil, dust and oxide layers to further enhance the adhesion of the insulation layer.

[0028] According to the appendix Figure 7 As shown, it is particularly important to emphasize that the logical functions of controller 4 also include: When the historical temperature data retrieved by the data storage unit shows that the temperature value is not deviating from the normal range, but the visual inspection system 6 continues to detect defects, such as poor adhesion, the controller 4 will determine that the problem may originate from the battery cell body 100 itself. At this time, the controller 4 will generate control instructions to adjust the working parameters of the surface pretreatment device 8, such as increasing the speed of the brush wheel or extending the cleaning time. At the same time, a prompt signal will be issued to remind the operator through the human-machine interface to check whether there are stubborn oil stains or material abnormalities on the surface of the battery cell body 100, which require manual intervention for troubleshooting.

[0029] According to the appendix Figure 1 and appendix Figure 2 As shown, it is worth noting that a cooling device is also provided between the coating mold 3 and the vision inspection system 6. This cooling device is connected to the controller 4 and is used to forcibly cool the coating layer 200 after coating molding, so that it reaches a suitable temperature and stable physical state before entering the vision inspection system 6. The specific structure of the cooling device can be a closed or semi-closed cooling water tank through which the coating layer 200 passes, and heat exchange occurs through direct contact with the cooling water; or it can be an air-cooled cooling box, in which a high-speed airflow generated by a high-pressure fan blows on the surface of the coating layer 200 to achieve non-contact cooling. The controller 4 determines the cooling method based on the speed signal of the traction machine 1 and the preheating data collected by the temperature sensor 5. Temperature is dynamically adjusted by regulating the cooling intensity of the cooling device, for example, by adjusting the flow rate of cooling water or the speed of the fan, to ensure that the coating layer 200 at different production speeds is cooled to a preset apparent temperature range, such as 40℃-60℃, before entering the visual inspection area. The introduction of the cooling device allows the freshly extruded insulation layer, which is in a molten or highly elastic state, to be quickly shaped, avoiding false detections caused by high-temperature deformation or adhesion. At the same time, cooling the coating layer 200 to a stable temperature eliminates the interference of the high-temperature surface on the imaging of the industrial camera 61, improves the image acquisition quality and defect identification accuracy of the visual inspection system 6, and thus ensures the reliability of the quality feedback signal received by the controller 4.

[0030] It is worth noting that controller 4 is also connected to a human-machine interface (HMI), which is typically implemented using a touchscreen industrial display. This HMI displays the equipment's operating status, real-time process parameters, and historical data curves, and receives operator input. Through the HMI, operators can set key process parameters such as target preheating temperature, target cooling temperature, and visual inspection sensitivity threshold for different cable specifications. When the visual inspection system 6 identifies a defect and analyzes it through the data storage unit, controller 4 pushes the analysis results to the HMI in real time for visualization. The analysis results include the defect type, location, corresponding historical temperature data, and diagnostic suggestions. Operators can intuitively understand the equipment's operating status and product quality trends. When controller 4 issues an alarm signal or adjustment suggestion, manual review and intervention can be performed promptly.

[0031] This invention also discloses a method for using a core coating molding equipment for cable processing, the method comprising the following steps: Step S1: The traction machine 1 pulls the battery cell body 100 forward and sends the speed signal of the traction machine 1 to the controller 4 in real time; In step S2, the controller 4 calculates the basic heating power through the feedforward control module based on the current speed signal and the preset target preheating temperature, and controls the preheating device 2 to heat the battery cell body 100. In step S3, the temperature sensor 5 located behind the preheating device 2 detects the actual surface temperature of the battery cell body 100 before it enters the coating mold 3 in real time and feeds the signal back to the controller 4. In step S4, the feedback control module of controller 4 compares the actual surface temperature with the target preheating temperature and fine-tunes the heating power of preheating device 2 in real time. In step S5, the temperature-controlled battery cell body 100 enters the coating mold 3 for insulation layer coating, and the formed coating layer 200 proceeds to the vision inspection system 6. Step S6: The visual inspection system 6 acquires surface images of the coating layer 200 to identify whether there are internal stress lines or bubble protrusion defects. Step S7: If a defect is detected, the controller 4 controls the marking device 7 to mark the defect location, and at the same time the data storage unit retrieves the historical preheating temperature data corresponding to the cell body 100 for comparison and analysis. In step S8, if the historical temperature data is normal, the controller 4 adjusts the operating parameters of the surface pretreatment device 8 and prompts the operator to check the surface condition of the battery cell body 100.

[0032] Example 1: This example takes steady-state operation at rated production speed as an example, combined with the attached... Figure 1 To be continued Figure 7 The workflow is explained in detail below: In step S1, the traction machine 1 pulls the battery cell body 100 at a preset constant speed and sends the real-time speed signal of the traction machine 1 to the controller 4. The real-time speed signal can be read by the encoder.

[0033] In step S2, the controller 4 calculates a basic heating power based on the received current speed signal and the internally set target preheating temperature, such as 120°C, through its internal feedforward control module, and sends a command to the preheating device 2 to heat the battery cell body 100.

[0034] In step S3, the heated battery cell body 100 continues to move forward. When the battery cell body 100 reaches the entrance of the coating mold 3, the non-contact infrared temperature sensor 5 located at that position detects its actual surface temperature in real time and feeds back the temperature signal to the feedback control module of the controller 4.

[0035] In step S4, the feedback control module compares the actual surface temperature with the target temperature. For example, if the actual surface temperature is 119.5℃ and the target temperature is 120℃, a small difference of -0.5℃ is obtained. After PID calculation, a small positive correction is made to the base power given by the feedforward module, and the heating power of the preheating device 2 is adjusted in real time to make the surface temperature of the battery cell accurately locked at the target value.

[0036] In step S5, the battery cell body 100, after precise temperature control, enters the coating mold 3. The coating mold 3 extrudes molten insulating material to form a coating layer 200. The formed coating layer 200 continues to move under traction to the detection area of ​​the vision inspection system 6.

[0037] In step S6, the industrial camera 61 of the vision inspection system 6 acquires high-speed images of the surface of the coating layer 200, and the image processing unit analyzes them in real time to identify whether there are appearance defects such as internal stress lines or bubble protrusions. Under normal production conditions in this embodiment, the image analysis results are determined to be qualified.

[0038] Steps S7 and S8 were not triggered, and the system maintained stable operation, achieving dynamic constant temperature control during the production process.

[0039] Example 2: This example uses the switching of the production line speed from low speed to high speed as an example, combined with the attached... Figure 1 To be continued Figure 7 The workflow is explained in detail below: When the operator increases the production line speed via the human-machine interface, the driver of traction machine 1 immediately sends a new, higher speed signal to controller 4.

[0040] After receiving the speed change signal, the feedforward control module of controller 4 immediately calculates a significantly increased base heating power based on the speed change and the preset thermodynamic model, and outputs it to the preheating device 2 instantly, thereby increasing the heating power of the preheating device 2.

[0041] At this time, the speed of the battery cell body 100 increases, and the time for a unit length of battery cell to absorb heat from the preheating device 2 becomes shorter. However, due to the rapid compensation of the feedforward control, the temperature field or radiation intensity of the preheating device 2 has been enhanced in advance. When the battery cell body 100 reaches the position of the temperature sensor 5, the actual surface temperature of the battery cell body 100 does not fluctuate significantly.

[0042] The temperature detected by temperature sensor 5 may have a slight fluctuation. The feedback control module then intervenes to make fine adjustments, eventually stabilizing the temperature at a new equilibrium point.

[0043] The subsequent coating and testing steps are the same as in Example 1, ensuring that the thermal bonding effect of the insulation layer remains consistent during the speed-up process and avoiding cold spot defects caused by temperature response lag.

[0044] Example 3: This example uses a vision system to detect bubble defects and trace their origin, combined with the attached... Figure 1 To be continued Figure 7 The workflow is explained in detail below: During continuous production, if the vision inspection system 6 suddenly identifies several tiny bubble protrusion defects on the surface of a section of the coating layer 200, the controller 4 immediately records the timestamp of the defect occurrence.

[0045] The controller 4 controls the marking device 7 to spray a mark on the cable corresponding to the defect in that section.

[0046] Meanwhile, the data storage unit inside the controller 4 retrieves the historical preheating temperature data corresponding to the main body 100 of the battery cell within that time period based on the time when the defect occurred.

[0047] After comparison, controller 4 found that the historical temperature data of the battery cell had always been stable within the process window of 120±1℃, and there was no overheating phenomenon. Therefore, it was determined that the defect was not caused by the temperature runaway of the preheating device 2.

[0048] Based on this diagnosis, the controller 4 locates the problem to the surface condition of the battery cell. The controller 4 sends an instruction to the surface pretreatment device 8 to increase its cleaning intensity, such as increasing the brush speed or cleaning pressure, and displays an alarm signal on the human-machine interface: "Unknown adhesion defect detected. Please check the oil stains or material batch on the surface of the battery cell body 100."

[0049] After receiving the prompt, the operator inspects the cell reel or the wire feeding end. If a slight oil stain is found on the surface of the batch of cells, the defect disappears after cleaning, verifying the diagnostic logic of controller 4. This embodiment demonstrates that the system can not only control the temperature through multi-source data fusion, but also assist in troubleshooting other process faults.

[0050] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A core coating and molding equipment for cable processing, characterized in that, include: A traction machine (1), a preheating device (2), and a coating mold (3) are arranged sequentially along the traveling direction of the battery cell body (100). It also includes a controller (4) and a temperature sensor (5) and a vision inspection system (6) respectively connected to the controller (4); The temperature sensor (5) is located between the preheating device (2) and the coating mold (3) and is used to collect the real-time temperature of the battery cell body (100) before it enters the coating mold; The visual inspection system (6) is located on the exit side of the coating mold (3) and is used to collect surface images of the coating layer (200) after it is formed. The controller (4) is configured to: receive the speed signal of the traction machine (1) and the temperature signal of the temperature sensor (5), dynamically adjust the heating power of the preheating device (2); and receive the image signal of the vision detection system (6) to correct the historical temperature control parameters.

2. The cable processing core coating molding equipment according to claim 1, characterized in that, The controller (4) includes a feedforward control module and a feedback control module; The feedforward control module is used to calculate the basic heating power required to maintain the target preheating temperature based on the real-time speed signal of the traction machine (1); The feedback control module is used to compare the real-time temperature collected by the temperature sensor (5) with the target preheating temperature, correct the basic heating power according to the difference, and generate the final heating control command to output to the preheating device (2).

3. The cable processing core coating molding equipment according to claim 2, characterized in that, The visual inspection system (6) includes an industrial camera (61) and an image processing unit, which is integrated inside the controller (4) and is used to identify internal stress lines and / or bubble protrusion defects on the surface of the coating layer (200).

4. The cable processing core coating molding equipment according to claim 3, characterized in that, The visual inspection system (6) is also equipped with a marking device (7), which is connected to the controller (4); The controller (4) is also used to control the marking device (7) to mark the corresponding coating layer (200) position when the image processing unit identifies a defect.

5. The cable processing core coating molding equipment according to claim 4, characterized in that, The controller (4) also has a built-in data storage unit. When a defect is detected, the data storage unit retrieves the historical preheating temperature data corresponding to the defective cell body (100) and determines whether the historical preheating temperature data deviates from the preset normal temperature range.

6. The cable processing core coating molding equipment according to claim 5, characterized in that, It also includes a surface pretreatment device (8) disposed in front of the preheating device (2), the surface pretreatment device (8) being connected to the controller (4) and used to clean the surface of the battery cell body (100).

7. The cable processing core coating molding equipment according to claim 6, characterized in that, The controller (4) is also used to generate control instructions to adjust the working parameters of the surface pretreatment device (8) and / or issue an alarm signal to check the oil stains on the surface of the battery cell body (100) when the data storage unit determines that the historical preheating temperature has not deviated from the normal range, but the visual inspection system (6) continues to detect defects.

8. The cable processing core coating molding equipment according to claim 2, characterized in that, The temperature sensor (5) is a non-contact infrared temperature sensor. The probe of the temperature sensor (5) is aligned with and focused on the surface of the cell body (100) at the entrance of the coating mold (3).

9. The cable processing core coating molding equipment according to claim 1, characterized in that, The battery core body (100) is the conductor core of the communication cable, and the covering mold (3) is an extruder head used for extruding and forming the insulation layer.

10. A method of using a cable processing core coating molding equipment according to any one of claims 1-9, characterized in that, The method of use includes the following steps: Step S1: The traction machine (1) pulls the battery cell body (100) to move forward and sends the speed signal of the traction machine (1) to the controller (4) in real time. Step S2, the controller (4) calculates the basic heating power through the feedforward control module based on the current speed signal and the preset target preheating temperature, and controls the preheating device (2) to heat the battery cell body (100); In step S3, the temperature sensor (5) located behind the preheating device (2) detects the actual surface temperature of the battery cell body (100) before it enters the coating mold (3) in real time and feeds the signal back to the controller (4). In step S4, the feedback control module of the controller (4) compares the actual surface temperature with the target preheating temperature and finely adjusts the heating power of the preheating device (2) in real time. Step S5: The temperature-controlled battery cell body (100) enters the coating mold (3) for insulation layer coating, and the formed coating layer (200) proceeds to the vision inspection system (6). Step S6, the visual inspection system (6) acquires surface images of the coating layer (200) to identify whether there are internal stress lines or bubble protrusion defects; In step S7, if a defect is detected, the controller (4) controls the marking device (7) to mark the defect location, and at the same time the data storage unit retrieves the historical preheating temperature data corresponding to the main body (100) of the cell segment for comparison and analysis. In step S8, if the historical temperature data is normal, the controller (4) adjusts the working parameters of the surface pretreatment device (8) and prompts the operator to check the surface condition of the battery cell body (100).

Images