Production system of PI (Polyimide) interval adhesive tape

Abstract

The invention provides a production system of a PI (polyimide) interval adhesive tape, which belongs to the technical field of production of surface coating liquid and comprises an unwinding mechanism, a coating mechanism, a drying oven, a cooling mechanism and a winding mechanism which are sequentially arranged along the conveying direction of a base material, the input end of the coating mechanism is provided with a linear speed measuring unit used for detecting the instantaneous linear speed of a base material in real time, and a visual detection unit used for conducting image collection on the coated base material so as to recognize the actual edge position of a non-glue area is arranged between the output end of the coating mechanism and the input end of the drying oven. And the coating mechanism, the linear speed measuring unit and the visual detection unit are electrically connected with a controller.

Description

Technical Field

[0001] This invention relates to the technical field of production systems for surface-coated liquids, and particularly to a production system for PI spacer tape. Background Technology

[0002] PI (polyimide) spacer tape, as a functional material in battery cell manufacturing, has a core structure that forms precisely distributed parallel adhesive-free spacer areas on the surface of a continuous substrate to meet the insulation requirements at specific locations during cell winding or stacking. Current industrial production commonly employs automated continuous production lines to manufacture this type of adhesive tape. These lines consist of components such as a substrate unwinding unit, a coating mechanism, an oven, a cooling mechanism, and a rewinding mechanism. In the coating process, to form the required adhesive-free spacer areas, the current method primarily relies on the periodic lifting and lowering operation of the coating head mechanism. That is, the lifting and lowering of the coating head mechanism is controlled by preset fixed time intervals, thereby alternately generating adhesive and adhesive-free areas on the substrate.

[0003] However, this fixed-time-cycle control method faces challenges in actual continuous production. The tension control of the unwinding mechanism is difficult to maintain absolutely stable due to variations in the material roll diameter, and fluctuations in ambient temperature also interfere with the physical properties of the substrate, causing continuous fluctuations in the actual conveying speed of the substrate during operation. Therefore, when using a fixed-time-cycle control method, these speed fluctuations directly translate into deviations in the physical length of the glue-free zone. For example, when the substrate conveying speed decreases, the actual length of the glue-free zone formed within the same time cycle will exceed the preset target length; conversely, the actual length of the glue-free zone will be shorter than the preset target length. Such length deviations reduce batch quality reliability and can cause lateral misalignment of the battery cells in subsequent battery assembly processes. Summary of the Invention

[0004] The present invention aims to solve the above-mentioned technical problems by providing a production system for PI spacer tape.

[0005] The technical solution of the present invention is a production system for PI spacer adhesive tape, comprising an unwinding mechanism, a coating mechanism, an oven, a cooling mechanism, and a winding mechanism arranged sequentially along the conveying direction of the substrate. The input end of the coating mechanism is provided with a linear velocity measuring unit for real-time detection of the instantaneous linear velocity of the substrate. Between the output end of the coating mechanism and the input end of the oven, a visual detection unit is provided for image acquisition of the coated substrate to identify the actual edge position of the uncoated area. The coating mechanism, the linear velocity measuring unit, and the visual detection unit are electrically connected to a controller. The controller is configured with a cycle determination unit, a prediction calculation unit, a feedback correction unit, and an instruction output unit. The cycle determination unit is used to determine the cycle duration of each coating cycle based on the instantaneous linear velocity fed back by the linear velocity measurement unit in real time and the preset total length of the interval units, which includes the target glue-free area length and the target glue-containing area length. The prediction calculation unit is used to calculate and generate a predicted lift-up time for the coating mechanism for the current coating cycle based on the cycle duration of the current coating cycle and the preset target glue-free area length. The feedback correction unit is used to receive the actual edge position information of the glue-free area formed in the previous coating cycle fed back by the vision detection unit, calculate its position deviation from the target position, and compensate and correct the predicted lift-up time calculated by the prediction calculation unit in the next coating cycle based on the position deviation. The instruction output unit is used to convert the compensated and corrected lift-up time into a control instruction and send it to the coating mechanism to execute the corresponding lifting action.

[0006] In one embodiment, the linear velocity measuring unit is an encoder, which is mounted on the guide roller at the input end of the coating mechanism.

[0007] In one embodiment, the visual inspection unit includes a line scan camera and a strip light source. The line scan camera is arranged perpendicular to the plane of the substrate, and the acquisition direction of the line scan camera is perpendicular to the conveying direction of the substrate.

[0008] In one implementation, the controller is a PLC, and the cycle determination unit, the prediction calculation unit, the feedback correction unit, and the instruction output unit are its internal functional modules.

[0009] In one embodiment, the coating mechanism includes a textured coating head, a coating head mechanism, and a first driving component. The textured coating head is closely adjacent to the coating head mechanism and is driven by the first driving component to achieve synchronous lifting and lowering. The first driving component responds to control commands to perform corresponding lifting and lowering actions.

[0010] In one embodiment, a liftable pressure roller mechanism is provided on one side of the coating head mechanism, which is used to press the substrate toward the coating head mechanism.

[0011] In one embodiment, a tension control mechanism is provided between the unwinding mechanism and the coating mechanism. The tension control mechanism includes a fixed frame mounted on the support legs of the production line and a lifting guide roller movably mounted on the fixed frame. The lifting action of the lifting guide roller is driven by a cylinder, and the position sensor on the lifting guide roller is electrically connected to the controller.

[0012] In one embodiment, the oven is assembled from multiple boxes along the production line and is erected in an arched structure, with supporting legs provided on both sides of the bottom of each box.

[0013] In one embodiment, the oven is a segmented hot air circulating oven, with the temperature of each chamber independently adjustable and electrically connected to a controller.

[0014] In one embodiment, a correction mechanism is provided between the oven and the cooling mechanism, which is used to correct the lateral positional deviation of the substrate during the conveying process.

[0015] The advantages of this invention compared to existing technologies are that the PI spacer tape production system, through a closed-loop control process, effectively overcomes the impact of substrate linear velocity fluctuations on the consistency of the adhesive-free area length. Unlike existing technologies that rely on fixed time periods to control the lifting and lowering of the coating mechanism, this production system not only dynamically adjusts the coating cycle based on instantaneous linear velocity but also introduces a visual detection feedback correction mechanism to precisely compensate for and correct the lifting time of the coating mechanism. Therefore, it significantly improves the accuracy and stability of the adhesive-free area length of the PI spacer tape, thereby ensuring the reliability of the product in subsequent applications such as battery assembly. Attached Figure Description

[0016] Figure 1 A front view of a PI spacer tape production system provided in an embodiment of the present invention; Figure 2 A connection block diagram of some hardware in the PI spacer tape production system provided for an embodiment of the present invention; Figure 3 for Figure 1 A first partial enlarged view of the PI spacer tape production system provided in the image; Figure 4 for Figure 1 The second enlarged view of the PI spacer tape production system provided in the image.

[0017] In the diagram: 1. Unwinding mechanism; 2. Coating mechanism; 3. Oven; 4. Cooling mechanism; 5. Rewinding mechanism; 6. Linear speed measurement unit; 7. Vision inspection unit; 8. Controller; 9. Period determination unit; 10. Prediction calculation unit; 11. Feedback correction unit; 12. Command output unit; 13. Linear scan camera; 14. Strip light source; 15. Mesh coating head; 16. Coating head mechanism; 17. First drive component; 18. Pressure roller mechanism; 19. Tension control mechanism; 20. Support leg; 21. Fixing frame; 22. Lifting guide roller; 23. Housing; 24. Correction mechanism. Detailed Implementation

[0018] The above and other embodiments and advantages of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0019] In one implementation, such as Figures 1 to 3 As shown.

[0020] The PI spacer tape production system provided in this embodiment includes an unwinding mechanism 1, a coating mechanism 2, an oven 3, a cooling mechanism 4, and a winding mechanism 5 arranged sequentially along the substrate conveying direction. The input end of the coating mechanism 2 is equipped with a linear velocity measuring unit 6 for real-time detection of the instantaneous linear velocity of the substrate. Between the output end of the coating mechanism 2 and the input end of the oven 3, a visual inspection unit 7 is provided for image acquisition of the coated substrate to identify the actual edge position of the uncoated area. The coating mechanism 2, the linear velocity measuring unit 6, and the visual inspection unit 7 are electrically connected to a controller 8. The controller 8 is equipped with a period determination unit 9, a prediction calculation unit 10, a feedback correction unit 11, and an instruction output unit 12. The period determination unit 9 is used to determine the instantaneous linear velocity of the substrate based on the real-time feedback from the linear velocity measuring unit 6. The speed and the preset total length of the interval units, including the target adhesive-free area length and the target adhesive area length, determine the cycle duration of each coating cycle; the prediction calculation unit 10 is used to calculate and generate the predicted lifting time of the coating mechanism 2 for the current coating cycle based on the cycle duration of the current coating cycle and the preset target adhesive-free area length; the feedback correction unit 11 is used to receive the actual edge position information of the adhesive-free area formed in the previous coating cycle from the visual detection unit 7, calculate its position deviation from the target position, and compensate and correct the predicted lifting time calculated by the prediction calculation unit 10 in the next coating cycle according to the position deviation; the command output unit 12 is used to convert the compensated and corrected lifting time into a control command and send it to the coating mechanism 2 to execute the corresponding lifting action.

[0021] In this embodiment, the PI spacer tape production system includes an unwinding mechanism 1, a coating mechanism 2, an oven 3, a cooling mechanism 4, and a winding mechanism 5 arranged sequentially along the substrate conveying direction, thus forming a complete production line. The input end of the coating mechanism 2 is equipped with a linear velocity measurement unit 6 for real-time detection of the instantaneous linear velocity of the substrate. A vision detection unit 7 is located between the output end of the coating mechanism 2 and the input end of the oven 3, for image acquisition of the coated substrate and identification of the actual edge position of the adhesive-free area. By analyzing the acquired images, the boundary between the adhesive-free area and the adhesive-coated area can be identified, thereby determining the actual edge position of the adhesive-free area. The controller 8 contains functional modules including a period determination unit 9, a prediction calculation unit 10, a feedback correction unit 11, and an instruction output unit 12. These core control logics and algorithms are directly implemented in the programming environment of the controller 8, using programming languages ​​to write corresponding program segments to implement the logic of period determination, prediction calculation, feedback correction, and instruction output.

[0022] In actual production, the instantaneous linear velocity data detected in real time is sent to the controller 8. The cycle determination unit 9 configured inside the controller 8 receives this data and, in conjunction with the preset total length of the interval units input according to production needs, calculates the cycle length of each coating cycle. This means that the originally fixed time cycle becomes a dynamically changing time cycle based on the instantaneous linear velocity of the substrate. If the linear velocity of the substrate increases, the cycle length will be shortened accordingly to ensure that the total length of the interval units formed in physical space remains unchanged, and vice versa. After determining the cycle length of the current coating cycle, the prediction calculation unit 10 inside the controller 8 calculates and generates a predicted lifting time for the coating mechanism 2 for the current coating cycle based on this cycle length and the preset target adhesive-free area length. The coating mechanism 2, including the anilox coating head 15 and the coating head mechanism 16, is driven by the first drive component 17 to achieve lifting and lowering. This predicted lifting time is the time that the coating head mechanism 16 needs to lift to form an adhesive-free area of ​​the target length at the current linear velocity. Meanwhile, to more accurately control system errors, a vision inspection unit 7 is installed between the output end of the coating mechanism 2 and the input end of the oven 3. This vision inspection unit 7 consists of a line scan camera 13 and a bar light source 14. The line scan camera 13 is positioned perpendicular to the substrate plane, with its acquisition direction perpendicular to the substrate transport direction. It is used to acquire images of the coated substrate to identify the actual edge position of the adhesive-free area formed in the previous coating cycle. The actual edge position information acquired by the vision inspection unit 7 is fed back to the controller 8. The feedback correction unit 11 inside the controller 8 receives this information and compares it with a preset target position, calculating the positional deviation between the actual position and the target position. Based on this positional deviation, the feedback correction unit 11 compensates for the predicted lift-off time calculated by the prediction calculation unit 10 in the next coating cycle. For example, if the vision inspection finds that the actual length of the adhesive-free area in the previous cycle is slightly shorter than the target length, the feedback correction unit 11 will fine-tune the predicted lift-off time in the next cycle, slightly increasing it to compensate for this deviation. Finally, the instruction output unit 12 inside the controller 8 converts the compensated and corrected lift-off time into specific control instructions and sends them to the first drive component 17 of the coating mechanism 2. The first drive component 17 responds to these instructions and executes the lifting and lowering action of the coating head, thereby forming a glue-free area with a highly precise length on the substrate.

[0023] Through the aforementioned closed-loop control process, this production system effectively overcomes the impact of substrate linear velocity fluctuations on the consistency of the length of the adhesive-free zone. Unlike existing technologies that rely on fixed time periods to control the lifting and lowering of the coating mechanism 2, this production system not only dynamically adjusts the coating cycle based on instantaneous linear velocity but also introduces a visual detection feedback correction mechanism to precisely compensate for and correct the lifting time of the coating mechanism 2. Therefore, it significantly improves the accuracy and stability of the length of the adhesive-free zone of the PI spacer tape, thereby ensuring the reliability of the product in subsequent applications such as battery assembly.

[0024] In one embodiment, the linear speed measuring unit 6 of the PI spacer adhesive tape production system is an encoder, which is mounted on the guide roller at the input end of the coating mechanism 2.

[0025] In this embodiment, encoders are commonly used in industrial automation to accurately measure position and speed. By mounting the encoder on the guide roller at the input end of the coating mechanism 2, the actual linear velocity of the substrate before it enters the coating area can be directly and accurately obtained. Guide rollers are typically used in production lines to guide the substrate smoothly and maintain a certain tension; their surface is in close contact with the substrate, therefore their rotational speed accurately reflects the linear velocity of the substrate.

[0026] In one implementation, such as Figure 1 As shown.

[0027] The PI spacer tape production system provided in this embodiment includes a visual inspection unit 7 comprising a line scan camera 13 and a strip light source 14. The line scan camera 13 is arranged perpendicular to the plane of the substrate, and the acquisition direction of the line scan camera 13 is perpendicular to the conveying direction of the substrate.

[0028] In this embodiment, the line scan camera 13 acquires images by scanning a moving object line by line, enabling continuous capture of image data from the substrate surface at extremely high speed and resolution. The bar light source 14 works in conjunction with the line scan camera 13 to provide stable, sufficient, and uniform illumination for the detection area of ​​the substrate. By using the line scan camera 13 and the bar light source 14 as the core components of the vision inspection unit 7, and by optimizing the orientation of the line scan camera 13, the detection accuracy and stability of the actual edge position of the adhesive-free area on the substrate can be significantly improved.

[0029] In one embodiment, the controller 8 of the PI spacer adhesive tape production system is a PLC, and the cycle determination unit 9, prediction calculation unit 10, feedback correction unit 11, and instruction output unit 12 are its internal functional modules.

[0030] In this embodiment, the controller 8 is a PLC, which includes hardware functional modules such as a central processing unit, memory, input / output interface module, and power supply module, as well as software functional modules such as a cycle determination unit 9, a prediction calculation unit 10, a feedback correction unit 11, and an instruction output unit 12, which use programming languages ​​to write corresponding program segments to implement specific functions. Since all core control logic is implemented directly inside the PLC, the delays and uncertainties caused by external communication are avoided.

[0031] In one implementation, such as Figure 3 As shown.

[0032] The PI spacer tape production system provided in this embodiment has a coating mechanism 2 including a textured coating head 15, a coating head mechanism 16, and a first driving component 17. The textured coating head 15 and the coating head mechanism 16 are closely adjacent to each other and are driven by the first driving component 17 to achieve synchronous lifting and lowering. The first driving component 17 responds to control commands to perform corresponding lifting and lowering actions.

[0033] In this embodiment, the anilox applicator 15 is the core component for achieving precise coating. It is used to transfer the adhesive liquid, transferring a predetermined amount of adhesive liquid to the substrate surface during the coating process. The applicator mechanism 16 is used to support and position the anilox applicator 15. The first drive component 17 realizes the lifting and lowering action of the anilox applicator 15 and the applicator mechanism 16. It can be a high-precision cylinder or a hydraulic cylinder. The anilox applicator 15 and the applicator mechanism 16 are closely adjacent and driven by the first drive component 17 to achieve synchronous lifting and lowering. This structure ensures that the anilox applicator 15 has high stability when performing lifting and lowering actions. After the controller 8 calculates the accurate predicted lifting time based on real-time linear velocity and visual feedback and performs compensation correction, the command output unit 12 converts this lifting time into a control command and sends it to the first drive component 17. The first drive component 17 can respond to these control commands quickly and accurately, driving the anilox applicator 15 to perform lifting and lowering actions.

[0034] In one implementation, such as Figure 3 As shown.

[0035] The PI spacer tape production system provided in this embodiment has a liftable pressure roller mechanism 18 on one side of the coating head mechanism 16. The pressure roller mechanism 18 is used to press the substrate toward the coating head mechanism 16.

[0036] In this embodiment, the liftable pressure roller mechanism 18 consists of a single roller that can move vertically by an external driving force. Adjusting its relative position to the substrate and the coating head mechanism 16 controls the pressure applied to the substrate.

[0037] In one implementation, such as Figure 3 As shown.

[0038] The PI spacer tape production system provided in this embodiment has a tension control mechanism 19 between the unwinding mechanism 1 and the coating mechanism 2. The tension control mechanism 19 includes a fixed frame 21 installed on the support leg 20 of the production line and a lifting guide roller 22 movably installed on the fixed frame 21. The lifting action of the lifting guide roller 22 is driven by a cylinder, and the position sensor on the lifting guide roller 22 is electrically connected to the controller 8.

[0039] In this embodiment, the tension control mechanism 19 includes a fixed frame 21 mounted on the support legs 20 of the production line and a lifting guide roller 22 movably mounted on the fixed frame 21. The fixed frame 21 is the structural foundation of the tension control mechanism 19, and its mounting on the support legs 20 of the production line provides stable support for the entire tension control mechanism 19. The lifting guide roller 22 is the component in the tension control mechanism 19 that directly contacts the substrate and adjusts the tension. It is movably mounted on the fixed frame 21 and can move vertically up and down, thereby dynamically adjusting the substrate tension by changing the length of the substrate conveying path. The lifting action of the lifting guide roller 22 is driven by a cylinder. The cylinder receives instructions from the controller 8 and pushes the piston rod to move the lifting guide roller 22 up and down. Therefore, based on the feedback information from the position sensor and the instructions issued by the controller 8, the position of the lifting guide roller 22 is adjusted in real time, thereby dynamically adjusting the substrate tension. Stable substrate tension can prevent the substrate from stretching, loosening, or lateral shifting in the coating area.

[0040] In one implementation, such as Figure 1 and Figure 4 As shown.

[0041] The PI spacer tape production system provided in this embodiment has an oven 3 composed of multiple boxes 23 spliced ​​together along the production line, and the whole structure is arched. Support legs 20 are provided on both sides of the bottom of each box 23.

[0042] In this embodiment, the oven 3 is composed of several independent, standardized chambers 23. These chambers 23 are connected end-to-end on the production line, tightly linked by mechanical connectors to form a continuous drying channel. The entire assembled oven 3 is not arranged in a horizontal straight line, but rather curves upwards, forming an arch. This arched structure can be achieved by setting specific angle adjustment mechanisms at the connection points of the chambers 23. Furthermore, each independent chamber 23 is equipped with supporting legs 20 on both sides of its bottom. By providing independent and uniform support for each chamber 23, the overall weight of the oven 3 is effectively distributed to multiple support points, improving structural stability. The modular chambers 23 make the installation and maintenance of the oven 3 more convenient, and the arched structure enhances the load-bearing capacity and deformation resistance of the oven 3.

[0043] In one implementation, such as Figure 1 and Figure 4 As shown.

[0044] The PI spacer tape production system provided in this embodiment has a segmented hot air circulating oven 3, the temperature of each chamber 23 is independently adjustable, and each chamber is electrically connected to the controller 8.

[0045] In this embodiment, the segmented hot air circulating oven 3 refers to dividing the entire drying area into multiple independent chambers 23, each equipped with an independent hot air circulation system. This enables precise temperature control of the substrate at different drying stages. During the production of PI spacer tape, the solvent evaporation characteristics in the adhesive layer may vary at different stages. The segmented hot air circulating oven 3 allows for setting and maintaining an optimal temperature for each chamber 23 according to these process requirements. Simultaneously, the temperature of each chamber 23 is electrically connected to a controller 8, enabling the controller 8 to adjust in conjunction with the overall production line operation, achieving dynamic and intelligent temperature management. This segmented temperature control significantly improves drying efficiency and uniformity, effectively avoiding adhesive layer defects caused by improper temperature control, thereby ensuring the coating quality of the PI spacer tape.

[0046] In one implementation, such as Figure 1 As shown.

[0047] The PI spacer tape production system provided in this embodiment has a correction mechanism 24 between the oven 3 and the cooling mechanism 4. The correction mechanism 24 is used to correct the lateral positional deviation of the substrate during the conveying process.

[0048] In this embodiment, the correction mechanism 24 is used to detect and correct lateral position deviations of the strip material during conveying. It can utilize a photoelectric sensor to detect the edge position of the substrate. When the substrate deviates, the sensor outputs a signal, driving the actuator to adjust the position of the guide rollers, bringing the substrate back to the correct path. Alternatively, an ultrasonic sensor can be used to detect the substrate edge, determining the lateral position of the substrate based on the reflection time difference of the ultrasonic signal, and driving the actuator to correct it. Positioning the correction mechanism 24 between the oven 3 and the cooling mechanism 4 is significant. The high-temperature environment inside the oven 3 may cause thermal deformation of the substrate, resulting in lateral deviation. The cooling mechanism 4, which follows closely, requires the substrate to enter in a stable state to ensure uniform cooling and subsequent winding quality. Therefore, placing the correction mechanism 24 at this location can promptly correct any lateral deviations that may occur at the exit of the oven 3, preventing the deviation from accumulating in the cooling mechanism 4 and the winding mechanism 5, thereby ensuring the stability of the entire production line and product quality.

[0049] The specific embodiments described above further illustrate the inventive purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the scope of protection of the present invention. In particular, it should be noted that any modifications, equivalent substitutions, or improvements made by those skilled in the art within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A production system for PI spacer tape, characterized in that, The system includes an unwinding mechanism, a coating mechanism, an oven, a cooling mechanism, and a winding mechanism arranged sequentially along the substrate conveying direction. The input end of the coating mechanism is equipped with a linear velocity measuring unit for real-time detection of the instantaneous linear velocity of the substrate. Between the output end of the coating mechanism and the input end of the oven, a visual detection unit is provided for image acquisition of the coated substrate to identify the actual edge position of the uncoated area. The coating mechanism, the linear velocity measuring unit, and the visual detection unit are electrically connected to a controller. The controller is configured with a cycle determination unit, a prediction calculation unit, a feedback correction unit, and an instruction output unit. The cycle determination unit is used to determine the cycle duration of each coating cycle based on the instantaneous linear velocity fed back by the linear velocity measurement unit in real time and the preset total length of the interval units, which includes the target glue-free area length and the target glue-containing area length. The prediction calculation unit is used to calculate and generate a predicted lift-up time for the coating mechanism for the current coating cycle based on the cycle duration of the current coating cycle and the preset target glue-free area length. The feedback correction unit is used to receive the actual edge position information of the glue-free area formed in the previous coating cycle fed back by the vision detection unit, calculate its position deviation from the target position, and compensate and correct the predicted lift-up time calculated by the prediction calculation unit in the next coating cycle based on the position deviation. The instruction output unit is used to convert the compensated and corrected lift-up time into a control instruction and send it to the coating mechanism to execute the corresponding lifting action.

2. The PI spacer tape production system according to claim 1, characterized in that, The linear velocity measuring unit is an encoder, which is installed on the guide roller at the input end of the coating mechanism.

3. The PI spacer tape production system according to claim 1, characterized in that, The visual inspection unit includes a line scan camera and a bar light source. The line scan camera is set perpendicular to the plane of the substrate, and the acquisition direction of the line scan camera is perpendicular to the conveying direction of the substrate.

4. The PI spacer tape production system according to claim 1, characterized in that, The controller is a PLC, and the cycle determination unit, the prediction calculation unit, the feedback correction unit, and the instruction output unit are its internal functional modules.

5. The PI spacer tape production system according to claim 1, characterized in that, The coating mechanism includes a textured coating head, a coating head mechanism, and a first driving component. The textured coating head is closely adjacent to the coating head mechanism and is driven by the first driving component to achieve synchronous lifting and lowering. The first driving component responds to control commands to perform corresponding lifting and lowering actions.

6. The PI spacer tape production system according to claim 5, characterized in that, The coating head mechanism has a liftable pressure roller mechanism on one side, which is used to press the substrate toward the coating head mechanism.

7. The PI spacer tape production system according to claim 1, characterized in that, A tension control mechanism is provided between the unwinding mechanism and the coating mechanism. The tension control mechanism includes a fixed frame installed on the support legs of the production line and a lifting guide roller movably installed on the fixed frame. The lifting action of the lifting guide roller is driven by a cylinder, and the position sensor on the lifting guide roller is electrically connected to the controller.

8. The PI spacer tape production system according to claim 7, characterized in that, The oven is assembled from multiple boxes along the production line and is erected in an arched structure. Support legs are provided on both sides of the bottom of each box.

9. The PI spacer tape production system according to claim 8, characterized in that, The oven is a segmented hot air circulating oven, and the temperature of each chamber is independently adjustable and electrically connected to the controller.

10. The PI spacer tape production system according to claim 1, characterized in that, A correction mechanism is provided between the oven and the cooling mechanism, which is used to correct the lateral positional deviation of the substrate during the conveying process.

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