A plate coating line and a plate coating method thereof

Abstract

The application discloses a kind of polar plate coating flow line and its coating method, it is related to polar plate production technical field, wherein the flow line includes coating conveying line, paste coating hopper mechanism, tracking weighing mechanism and control module.By setting the paste coating hopper mechanism of coating conveying line feed end to paste coating is carried out to continuous grid, and utilize tracking weighing mechanism during the operation of coating conveying line to the polar plate on coating conveying line is dynamically grabbed, weighed and the polar plate after weighing is put back to coating conveying line, the weight of polar plate after coating is realized to the real-time online automatic sampling inspection, simultaneously by control module based on the weight data obtained by tracking weighing mechanism determines weight deviation feature, and based on the weight deviation feature decoupling adjusts multiple paste coating dimensions state of paste coating hopper mechanism, so that after detecting weight deviation can first time automatically correct paste coating parameter, form complete real-time closed-loop feedback mechanism.

Description

Technical Field

[0001] This invention relates to the field of electrode production technology, and in particular to an electrode coating production line and coating method thereof. Background Technology

[0002] In the continuous coating process of lead-acid battery plates, the consistency of plate weight is a key factor determining the consistency of battery capacity, the consistency of electrode group assembly pressure, and battery life. With the improvement of automation, machine coating has been widely used in battery plate processing. Existing coating equipment typically includes a grid delivery device, a coating conveyor belt device, and a paste application device, enabling continuous paste application production of plates. During the coating process, the amount of paste applied and the coating thickness are the core factors determining the plate weight and thickness. The industry typically controls the coating weight by adjusting the frequency of the coating head motor and the height of the plate discharge port.

[0003] In the coating process, the amount of lead paste applied and the coating thickness are the core factors determining the weight and thickness of the electrode plates. However, existing technologies generally suffer from inconsistent lead paste pressure at the dispensing nozzle due to the constantly changing amount of lead paste in the coating machine's hopper as production progresses. This results in differences in the amount of lead paste dispensed at the same dispensing frequency, leading to significant differences in the weight and thickness of positive and negative electrode plates. Furthermore, most solutions rely on manual observation and control of the dispensing, which is highly arbitrary and results in poor lead paste consistency. At the same time, there is a lack of real-time online detection and closed-loop feedback mechanisms for the weight of the electrode plates after coating. Offline sampling inspection is usually used, which results in significant detection lag and makes it impossible to correct weight deviations during the coating process in a timely manner. Summary of the Invention

[0004] The electrode coating production line and its manufacturing method provided by this invention can solve the problems in the prior art, which mostly rely on manual observation and manual control of paste application, and lack a real-time online detection and closed-loop feedback mechanism for the weight of the electrode after coating.

[0005] A plate coating production line includes a coating conveyor line, a paste hopper mechanism, a tracking and weighing mechanism, and a control module. The paste hopper mechanism is located at the feed end of the coating conveyor line. The tracking and weighing mechanism is configured to dynamically grab, weigh, and return the weighed plates from the coating conveyor line during its operation. The control module is used to determine weight deviation characteristics based on the weight data obtained by the tracking and weighing mechanism, and to decouple and adjust multiple coating dimensions of the paste hopper mechanism based on the weight deviation characteristics.

[0006] The electrode coating production line provided by this invention has, but is not limited to, the following beneficial effects compared to the prior art: This electrode coating production line applies paste to continuous grids via a paste hopper mechanism located at the feed end of the coating conveyor. A tracking and weighing mechanism, integrated into the conveyor, dynamically grabs and weighs the electrodes, returning them to the line. This real-time online automatic sampling inspection of the electrode weight after coating avoids the detection lag issues of traditional offline sampling methods, allowing weight deviations to be detected promptly during production. Simultaneously, the control module determines the weight deviation characteristics based on the weight data acquired by the tracking and weighing mechanism and decouples and adjusts multiple coating dimensions of the paste hopper mechanism based on these characteristics. This enables automatic correction of coating parameters immediately upon detecting a weight deviation, forming a complete real-time closed-loop feedback mechanism. This effectively solves the technical problem in existing technologies where the lack of real-time online detection and closed-loop feedback mechanisms prevents timely correction of weight deviations during coating, avoiding batch defects caused by detection lag.

[0007] Furthermore, the paste hopper mechanism includes a paste hopper, a stirring shaft, a first servo motor, a second servo motor, and a third servo motor; the stirring shaft is rotatably disposed inside the paste hopper, and the output end of the first servo motor is driven to rotate the stirring shaft to adjust the amount of paste applied; the second servo motor is disposed at the bottom of the paste hopper, and its output end is driven to rotate the paste hopper through a driving component to adjust the tilt of the paste hopper about its length axis; the third servo motor is disposed on the support column of the paste hopper, and its output end is driven to rotate the paste hopper to move it up and down in the vertical direction to adjust the height of the paste hopper.

[0008] Furthermore, the tracking and weighing mechanism includes a gripping mechanism, a weighing unit, and a transition platform. The gripping mechanism is used to grip the target electrode plate off the coating conveyor line and place it in the weighing unit for weighing, and to place the weighed target electrode plate on the transition platform, and to grip the weighed target electrode plate from the transition platform and place it back in the empty space of the coating conveyor line.

[0009] Furthermore, the gripping mechanism includes a multi-joint robotic arm and a non-contact pneumatic suction cup; the tracking and weighing mechanism also includes a photoelectric sensor and an encoder; the photoelectric sensor is used to detect the position of the electrode plate on the coating conveyor line, the encoder is used to obtain the running speed of the coating conveyor line, and the multi-joint robotic arm carries the non-contact pneumatic suction cup to perform dynamic gripping based on the position of the electrode plate and the running speed.

[0010] Furthermore, the paste hopper mechanism is equipped with a material level detection module for real-time monitoring of the material height in the paste hopper; the control module is also configured to: output a feeding signal when the material height is lower than a first preset threshold; and output a feeding end signal when the material height reaches a second preset threshold.

[0011] Furthermore, the material level detection module includes a laser and a vision camera, both of which are mounted on the paste hopper. The laser is used to emit a laser line into the material in the paste hopper, and the vision camera is used to capture an image containing the laser line and calculate the proportion of the laser line obscured by the material. The control module is configured to convert the proportion into a switching signal to determine whether the material height is lower than the first preset threshold or reaches the second preset threshold based on the switching signal.

[0012] Furthermore, the control module also includes a data acquisition box and a monitoring interface. The data acquisition box is installed on the coating conveyor line, and the monitoring interface is installed on the data acquisition box. The data acquisition box is used to collect on-site equipment operation data and perform data preprocessing and filtering. The monitoring interface is used to display the equipment operation status, pass rate indicators, and process parameters in real time, and supports the querying of historical data and the generation of reports.

[0013] Furthermore, it also includes a slitting knife and a flattening roller disposed downstream of the paste hopper mechanism, both of which are connected to the coating plate conveyor line.

[0014] A method for coating electrode plates, based on the aforementioned electrode plate coating production line, includes the following steps: S1, a continuous grid is fed along the coating conveyor line into the lower part of the paste hopper mechanism, where the paste hopper mechanism coats lead paste onto the continuous grid to form a coating grid; S2, a slitting knife cuts the coating grid into individual electrode plates, and a flattening roller compacts and shapes the individual electrode plates; S3, a tracking weighing mechanism dynamically picks up and weighs the cut individual electrode plates at a preset frequency, independently weighing two rows of electrode plates and recording the weight data; S4, the tracking weighing mechanism feeds back the weight data to the control module, and the control module determines the weight deviation characteristics based on the weight data; S5, the control module decouples and adjusts the multiple coating dimensions of the paste hopper mechanism based on the weight deviation characteristics.

[0015] Further, in step S5, the control module decouples and adjusts the multiple coating dimension states of the coating hopper mechanism based on the weight deviation characteristic, including: when the weight deviation characteristic is an overall weight deviation, the control module adjusts the coating state or longitudinal position of the coating hopper mechanism; when the weight deviation characteristic is a lateral weight deviation, the control module adjusts the lateral posture of the coating hopper mechanism; wherein, adjusting the coating state includes controlling the first servo motor to drive the stirring shaft to adjust the rotation speed; adjusting the lateral posture includes controlling the second servo motor to drive the coating hopper to adjust the tilt; adjusting the longitudinal position includes controlling the third servo motor to drive the coating hopper to adjust the lifting height. Attached Figure Description

[0016] Figure 1A schematic diagram of the structure of an electrode coating production line according to an embodiment of the present invention; Figure 2 for Figure 1 Schematic diagram of the intermediate coating paste hopper mechanism; Figure 3 for Figure 1 A schematic diagram of the tracking and weighing mechanism; Figure 4 A flowchart of a method for coating an electrode plate according to an embodiment of the present invention.

[0017] Explanation of reference numerals in the attached figures: 1. Coating conveyor line; 2. Coating hopper mechanism; 3. Tracking and weighing mechanism; 4. Control module; 5. Material level detection module; 6. Slitting knife; 7. Flattening roller; 21. Coating hopper; 22. Stirring shaft; 23. First servo motor; 24. Second servo motor; 25. Third servo motor; 26. Drive component; 31. Gripping mechanism; 32. Weighing unit; 33. Transition platform; 34. Photoelectric sensor; 35. Encoder; 311. Multi-joint robotic arm; 312. Non-contact pneumatic suction cup; 41. Data acquisition box; 42. Monitoring interface; 51. Laser; 52. Vision camera. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this application clearer, specific embodiments of this application are described clearly and completely below with reference to the accompanying drawings. It should be understood that the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments described in this application without creative effort will fall within the scope of protection of this application.

[0019] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the specification of this application is for the purpose of describing specific embodiments only and is not intended to limit this application; the terms "comprising," "including," "having," "containing," "comprise," etc., in the specification, claims, and accompanying drawings of this application are open-ended terms, indicating that a method comprises one or more steps, or an apparatus comprises one or more elements, but do not exclude the inclusion of other steps or elements. The terms "first," "second," etc., in the specification, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or primary / secondary relationship. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0020] In the description of this application, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. It should also be noted that...

[0021] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0022] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0023] like Figure 1As shown in the figure, an embodiment of the present invention provides an electrode coating production line, including a coating conveyor line 1, a paste hopper mechanism 2, a tracking and weighing mechanism 3, and a control module 4. The paste hopper mechanism 2 is located at the feeding end of the coating conveyor line 1. The tracking and weighing mechanism 3 is used during the operation of the coating conveyor line 1 to dynamically grab and weigh the electrode plates on the coating conveyor line 1 and put the weighed electrode plates back into the coating conveyor line 1. The control module 4 is used to determine the weight deviation characteristics based on the weight data obtained by the tracking and weighing mechanism 3, and to decouple and adjust the multiple paste coating dimensions of the paste hopper mechanism 2 based on the weight deviation characteristics.

[0024] In this embodiment, the paste hopper mechanism 2, located at the feed end of the coating conveyor line 1, applies paste to the continuous grid. A tracking and weighing mechanism 3, installed during the operation of the coating conveyor line 1, dynamically grabs and weighs the electrode plates on the line, then returns the weighed plates to the line. This achieves real-time online automatic sampling inspection of the electrode plate weight after coating, avoiding the detection lag problem of traditional offline sampling methods. This allows weight deviations to be detected promptly during production. Simultaneously, the control module 4 determines the weight deviation characteristics based on the weight data obtained by the tracking and weighing mechanism 3, and decouples and adjusts multiple coating dimensions of the paste hopper mechanism 2 based on these characteristics. This allows for automatic correction of coating parameters immediately upon detecting a weight deviation, forming a complete real-time closed-loop feedback mechanism. This effectively solves the technical problem in the prior art where the lack of real-time online detection and closed-loop feedback mechanisms prevents timely correction of weight deviations during coating, avoiding batch defects caused by detection lag.

[0025] like Figure 1 and Figure 2 As shown, the paste hopper mechanism 2 includes a paste hopper 21, a stirring shaft 22, a first servo motor 23, a second servo motor 24, and a third servo motor 25. The stirring shaft 22 is rotatably mounted inside the paste hopper 21. The output end of the first servo motor 23 is connected to the stirring shaft 22 for driving the stirring shaft 22 to rotate and adjust the amount of paste applied. The second servo motor 24 is located at the bottom of the paste hopper 21, and its output end is connected to the paste hopper 21 via a drive component 26 for driving the paste hopper 21 to deflect around its length axis to adjust the tilt of the paste hopper 21. The third servo motor 25 is located on the support column of the paste hopper 21, and its output end is connected to the paste hopper 21 for driving the paste hopper 21 to rise and fall vertically to adjust the height of the paste hopper 21.

[0026] In this embodiment, by rotatably setting the stirring shaft 22 inside the paste hopper 21 and driving the stirring shaft 22 to rotate via the output of the first servo motor 23, the rotation speed of the stirring shaft can be adjusted in real time according to the actual paste application requirements during the coating process. By changing the thixotropic and fluid properties of the lead paste, the amount of paste applied per unit time can be controlled, thereby effectively solving the technical problem of inconsistent paste application at the same dispensing frequency due to inconsistent pressure at the dispensing nozzle caused by changes in the amount of lead paste in the paste hopper. Simultaneously, by setting the second servo motor 24 at the bottom of the paste hopper 21 and driving the paste hopper 21 to deflect around its length axis to adjust the tilt, the system can adjust the two... The discharge pressure of the electrode plates is independently compensated and balanced, solving the problem of poor weight consistency between the two rows of electrode plates in the prior art. In addition, by setting the third servo motor 25 on the support column of the paste hopper 21 and connecting its output end to the paste hopper 21 to drive the paste hopper 21 to adjust its height in the vertical direction, the gap between the paste hopper and the coating roller can be precisely controlled, thereby adjusting the thickness and weight of the electrode plates. The three servo motors coordinately adjust the paste coating process from three dimensions: stirring speed, tilt, and lifting height, respectively, realizing comprehensive and precise control of the amount of paste applied, the weight consistency of the two rows of electrode plates, and the thickness of the electrode plates. This overcomes the defects of the prior art, which relies on manual observation and manual control, resulting in high arbitrariness and poor consistency of lead paste.

[0027] like Figure 1 and Figure 3 As shown, the tracking and weighing mechanism 3 includes a gripping mechanism 31, a weighing unit 32, and a transition platform 33. The gripping mechanism 31 is used to grip the target electrode plate away from the coating conveyor line 1 and place it in the weighing unit 32 for weighing, and to place the weighed target electrode plate on the transition platform 33, and to grip the weighed target electrode plate from the transition platform 33 and put it back into the empty space of the coating conveyor line 1.

[0028] In this embodiment, the gripping mechanism 31 grips the target electrode plate, removes it from the coating conveyor line 1, and places it in the weighing unit 32 for weighing. This achieves real-time online automatic sampling and detection of the electrode plate weight while the coating conveyor line 1 is running continuously, completing the weighing operation without stopping the machine. Simultaneously, the gripping mechanism 31 places the weighed target electrode plate on the transition platform 33 and grips it from the transition platform 33 back to the empty space on the coating conveyor line 1. Utilizing the transition platform 33 as a buffer transfer station before and after weighing, the gripping mechanism 31 can simultaneously complete the return of the weighed electrode plate and the removal of the electrode plate to be weighed in one pick-up and put-down stroke. This significantly improves the weighing and detection efficiency, ensures uninterrupted continuous production of the coating conveyor line 1, and solves the technical problem in the prior art where the lack of a real-time online detection mechanism prevents timely correction of weight deviations during the coating process.

[0029] like Figure 1 and Figure 3 As shown, the gripping mechanism 31 includes a multi-joint robotic arm 311 and a non-contact pneumatic suction cup 312; the tracking and weighing mechanism 3 also includes a photoelectric sensor 34 and an encoder 35; the photoelectric sensor 34 is used to detect the position of the electrode plate on the coating conveyor line 1, and the encoder 35 is used to obtain the running speed of the coating conveyor line 1. The multi-joint robotic arm 311 carries the non-contact pneumatic suction cup 312 to perform dynamic gripping based on the position of the electrode plate and the running speed.

[0030] In this embodiment, the position of the electrode plate on the coating conveyor line 1 is accurately detected by the photoelectric sensor 34, and the running speed of the coating conveyor line 1 is obtained in real time by the encoder 35. This enables the multi-joint robotic arm 311 to perform precise follow-up speed matching and trajectory planning based on the accurate electrode plate position signal and the conveyor line speed signal. Carrying a non-contact pneumatic suction cup 312, it accurately tracks and grabs the target electrode plate while the coating conveyor line 1 is running continuously. This achieves precise dynamic grabbing in high-speed motion, and electrode plate sampling can be completed without stopping or slowing down the coating conveyor line 1, effectively ensuring the continuous and efficient operation of the coating production line.

[0031] Specifically, a non-contact pneumatic suction cup 312 is used to pick up the wet electrode plates, avoiding physical damage to the undried electrode plates caused by traditional mechanical clamping methods, thus ensuring the product quality and yield of the electrode plates. The coordinated operation of the photoelectric sensor 34, encoder 35, multi-joint robotic arm 311 and non-contact pneumatic suction cup 312 enables the tracking and weighing mechanism 3 to achieve precise positioning and high-speed dynamic gripping of the electrode plates on the coating conveyor line 1 without stopping the machine or damaging the electrode plates.

[0032] like Figure 1 and Figure 2 As shown, the paste hopper mechanism 2 is equipped with a material level detection module 5, which is used to monitor the material height in the paste hopper 21 in real time; the control module 4 is also configured to output a feeding signal when the material height is lower than the first preset threshold and output a feeding end signal when the material height reaches the second preset threshold.

[0033] In this embodiment, the material level detection module 5 can monitor the material height in the hopper 21 in real time. Compared with the existing technology that relies on manual observation of the hopper material level, this method achieves continuous, accurate, and automated monitoring of the amount of lead paste in the hopper 21, completely eliminating the defects of high arbitrariness, slow response, and high labor intensity caused by manual observation. At the same time, the control module 4 is also configured to output a feeding signal when the material height is lower than the first preset threshold and output a feeding end signal when the material height reaches the second preset threshold. By setting the first and second preset thresholds, a reasonable feeding start and stop interval is formed, so that the amount of lead paste in the hopper 21 is always kept within a suitable fluctuation range. This avoids the problems of reduced output due to decreased lead paste pressure at the lower nozzle caused by too low lead paste level in the hopper 21, or lead paste overflow and increased output due to excessive pressure caused by overfilling.

[0034] like Figure 1 and Figure 2 As shown, the material level detection module 5 includes a laser 51 and a vision camera 52. Both the laser 51 and the vision camera 52 are mounted on the paste hopper 21. The laser 51 is used to emit laser lines into the material in the paste hopper 21, and the vision camera 52 is used to capture images containing the laser lines and calculate the proportion of the laser lines that are blocked by the material. The control module 4 is configured to convert the proportion into a switching signal to determine whether the material height is lower than a first preset threshold or reaches a second preset threshold based on the switching signal.

[0035] In this embodiment, by mounting both the laser 51 and the vision camera 52 on the paste hopper 21, the laser 51 emits a laser line into the material inside the paste hopper 21, and the vision camera 52 captures an image containing the laser line and calculates the proportion of the laser line obscured by the material. Compared with the prior art, which relies on manual observation of the paste hopper level or the use of mechanical level gauges, this method achieves non-contact, high-precision, real-time, and continuous automated detection of the amount of lead paste in the paste hopper 21. At the same time, the control module 4 is configured to convert the proportion of the laser line obscured by the material into a switching signal, and determine whether the material height is below a first preset threshold or reaches a second preset threshold based on the switching signal. By converting the continuously changing obscuration proportion into a discrete switching signal, the logic for adding and stopping the material feeding is simple and reliable, avoiding the problem of misjudgment caused by interference during the transmission of analog signals, and ensuring the stability and reliability of the feeding control.

[0036] like Figure 1As shown, the control module 4 also includes a data acquisition box 41 and a monitoring interface 42. The data acquisition box 41 is installed on the coating conveyor line 1, and the monitoring interface 42 is installed on the data acquisition box 41. The data acquisition box 41 is used to collect on-site equipment operation data and perform data preprocessing and filtering. The monitoring interface 42 is used to display the equipment operation status, pass rate indicators and process parameters in real time, and supports the query of historical data and the generation of reports.

[0037] In this embodiment, by setting the data acquisition box 41 on the coating conveyor line 1, the on-site real-time acquisition of field equipment operation data such as the operating status of the coating conveyor line 1, the weighing data of the tracking weighing mechanism 3, and the operating parameters of each servo motor of the paste hopper mechanism 2 is realized. The monitoring interface 42 is set on the data acquisition box 41 to display the equipment operating status, pass rate indicators, and process parameters in real time, so that on-site operators can intuitively and timely grasp the current operating status of the production line and product quality information, which facilitates manual intervention in the event of an anomaly. In addition, the monitoring interface 42 also supports the query of historical data and the generation of reports, enabling production managers to perform traceability analysis and quality review of long-term production data.

[0038] like Figure 1 As shown, it also includes a slitting knife 6 and a flattening roller 7 located downstream of the paste hopper mechanism 2. Both the slitting knife 6 and the flattening roller 7 are connected to the coating plate conveyor line 1.

[0039] In this embodiment, by placing both the slitting blade 6 and the flattening roller 7 downstream of the paste hopper mechanism 2 and connecting them to the coating conveyor line 1, the paste application, flattening, and slitting processes are integrated into the same continuous production line. After the paste hopper mechanism 2 completes the lead paste coating on the continuous grid, the paste grid directly enters the slitting blade 6 and the flattening roller 7 sequentially during the continuous conveying process of the coating conveyor line 1, eliminating the need for manual or mechanical transfer between different process equipment.

[0040] like Figure 4 As shown, an electrode coating method, based on the aforementioned electrode coating production line, includes the following steps: S1, a continuous grid is fed along the coating conveyor line 1 into the lower part of the paste hopper mechanism 2, and the paste hopper mechanism 2 coats lead paste onto the continuous grid to form a paste grid; S2, a slitting blade 6 cuts the paste grid into individual electrode plates, and a flattening roller 7 compacts and shapes the individual electrode plates; S3, a tracking weighing mechanism 3 dynamically grabs and weighs the cut individual electrode plates at a preset frequency, independently weighing two rows of electrode plates and recording the weight data; S4, the tracking weighing mechanism 3 feeds back the weight data to the control module 4, and the control module 4 determines the weight deviation characteristics based on the weight data; S5, the control module 4 decouples and adjusts the multiple coating dimensions of the paste hopper mechanism 2 based on the weight deviation characteristics.

[0041] In this embodiment, by feeding the continuous grid along the coating conveyor line 1 into the paste hopper mechanism 2, the paste hopper mechanism 2 applies lead paste onto the continuous grid to form a coated grid, realizing continuous integrated operation of the paste application process and the conveying process. The coated grid is cut into individual electrode plates by the slitting blade 6, and the flattening roller 7 compacts and shapes the individual electrode plates. This allows the coated grid to complete the slitting and flattening operations sequentially during continuous conveying. The compaction after slitting ensures that each electrode plate is independently compacted by the flattening roller 7, guaranteeing the thickness consistency and appearance quality of each electrode plate. The tracking weighing mechanism 3 dynamically grabs and weighs the cut individual electrode plates at a preset frequency, independently weighing and recording the weight data of the two rows of electrode plates. This achieves real-time, automatic, and independent sampling and detection of the weight of the two rows of electrode plates while the coating conveyor line 1 is running continuously, overcoming the detection lag of the traditional offline sampling inspection method. The system addresses several shortcomings. First, it fails to detect weight deviations promptly. Second, by tracking and weighing the device 3, weight data is fed back to the control module 4. The control module 4 then determines the weight deviation characteristics based on this data, enabling real-time processing of weight data and automatic identification of deviation characteristics on the production floor. This provides a data foundation for subsequent precise adjustments. Third, by decoupling and adjusting multiple coating dimensions of the paste-coating hopper device 2 based on weight deviation characteristics, the control module 4 achieves comprehensive automatic correction of coating amount, consistency of the two rows of electrode plates, and electrode plate thickness across multiple dimensions. This forms a complete closed-loop control system of "real-time detection—deviation identification—multi-dimensional adjustment," completely solving the technical problems of existing technologies, such as severe detection lag, inability to correct weight deviations promptly, and poor lead paste consistency caused by the lack of real-time online detection and closed-loop feedback mechanisms and reliance on manual observation and control. This significantly improves the stability and consistency of electrode plate coating weight, increasing product qualification rate and production efficiency.

[0042] In step S5, the control module 4 decouples and adjusts the multiple coating dimensions of the coating hopper mechanism 2 based on the weight deviation characteristics, including: when the weight deviation characteristic is an overall weight deviation, the control module 4 adjusts the coating state or longitudinal position of the coating hopper mechanism 2; when the weight deviation characteristic is a lateral weight deviation, the control module 4 adjusts the lateral posture of the coating hopper mechanism 2; wherein, adjusting the coating state includes controlling the first servo motor 23 to drive the stirring shaft 22 to adjust the rotation speed; adjusting the lateral posture includes controlling the second servo motor 24 to drive the coating hopper 21 to adjust the tilt; adjusting the longitudinal position includes controlling the third servo motor 25 to drive the coating hopper 21 to adjust the lifting height.

[0043] In this embodiment, the control module 4 distinguishes the type of weight deviation feature. When the weight deviation feature is an overall weight deviation, the coating state or longitudinal position of the paste hopper mechanism 2 is adjusted. When the weight deviation feature is a lateral weight deviation, the lateral posture of the paste hopper mechanism 2 is adjusted, thereby realizing differentiated and targeted processing of different types of weight deviation.

[0044] Specifically, adjusting the coating state includes controlling the first servo motor 23 to drive the stirring shaft 22 to adjust the rotation speed, thereby precisely controlling the amount of coating per unit time by changing the thixotropic and fluid properties of the lead paste, thus quickly responding to deviations in overall weight. Adjusting the longitudinal position includes controlling the third servo motor 25 to drive the paste hopper 21 to adjust the lifting height, thereby controlling the thickness and weight of the electrode plates by changing the gap between the paste hopper 21 and the coating roller, thus compensating for overall weight deviations from another dimension. Adjusting the lateral posture includes controlling the second servo motor 24 to drive the paste hopper 21 to adjust the tilt, thereby balancing the weight difference between the two rows of electrode plates by changing the paste dispensing pressure on the left and right sides of the paste hopper 21, specifically addressing the lateral weight deviation problem.

[0045] The above-disclosed embodiments are merely a few specific examples of the present invention. However, the embodiments of the present invention are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A plate coating production line, characterized in that, include: Coating conveyor line (1); The paste hopper mechanism (2) is located at the feed end of the coating plate conveyor line (1); The tracking weighing mechanism (3) is set up during the operation of the coating conveyor line (1) to dynamically grab and weigh the electrode plates on the coating conveyor line (1) and put the weighed electrode plates back into the coating conveyor line (1). The control module (4) is used to determine the weight deviation characteristics based on the weight data obtained by the tracking weighing mechanism (3), and to decouple and adjust the multiple coating dimension states of the coating hopper mechanism (2) based on the weight deviation characteristics.

2. The electrode coating production line as described in claim 1, characterized in that, The paste hopper mechanism (2) includes a paste hopper (21), a stirring shaft (22), a first servo motor (23), a second servo motor (24), and a third servo motor (25). The stirring shaft (22) is rotatably mounted inside the paste hopper (21), and the output end of the first servo motor (23) is connected to the stirring shaft (22) for driving the stirring shaft (22) to rotate in order to adjust the amount of paste applied. The second servo motor (24) is located at the bottom of the jar (21), and its output end is connected to the jar (21) via a drive unit (26) to drive the jar (21) to deflect around its length axis to adjust the tilt of the jar (21). The third servo motor (25) is mounted on the support column of the paste hopper (21), and its output end is connected to the paste hopper (21) for driving the paste hopper (21) to rise and fall in the vertical direction to adjust the height of the paste hopper (21).

3. The electrode coating production line as described in claim 1, characterized in that, The tracking and weighing mechanism (3) includes a gripping mechanism (31), a weighing unit (32), and a transition platform (33). The gripping mechanism (31) is used to grip the target electrode plate away from the coating conveyor line (1) and place it in the weighing unit (32) for weighing, and to place the weighed target electrode plate on the transition platform (33), and to grip the weighed target electrode plate from the transition platform (33) and put it back into the empty space of the coating conveyor line (1).

4. The electrode coating production line as described in claim 3, characterized in that, The gripping mechanism (31) includes a multi-joint robotic arm (311) and a non-contact pneumatic suction cup (312); the tracking and weighing mechanism (3) also includes a photoelectric sensor (34) and an encoder (35).

5. The electrode coating production line as described in claim 2, characterized in that, The paste hopper mechanism (2) is equipped with a material level detection module (5) for real-time monitoring of the material height in the paste hopper (21).

6. The electrode coating production line as described in claim 5, characterized in that, The material level detection module (5) includes a laser (51) and a vision camera (52). Both the laser (51) and the vision camera (52) are mounted on the paste hopper (21). The laser (51) is used to emit laser lines into the material in the paste hopper (21). The vision camera (52) is used to capture images containing the laser lines and calculate the proportion of the laser lines that are blocked by the material.

7. The electrode coating production line as described in claim 1, characterized in that, The control module (4) also includes a data acquisition box (41) and a monitoring interface (42). The data acquisition box (41) is set on the coating conveyor line (1), and the monitoring interface (42) is set on the data acquisition box (41). The data acquisition box (41) is used to collect on-site equipment operation data and perform data preprocessing and filtering.

8. The electrode coating production line as described in claim 1, characterized in that, It also includes a slitting knife (6) and a flattening roller (7) located downstream of the paste hopper mechanism (2), both of which are connected to the coating plate conveyor line (1).

9. A method for coating an electrode plate, characterized in that, The electrode coating production line, applied to any one of claims 1-8, comprises the following steps: S1. The continuous grid is fed into the lower part of the paste hopper mechanism (2) along the coating conveyor line (1). The paste hopper mechanism (2) coats the lead paste onto the continuous grid to form the paste grid. S2. The slitting knife (6) cuts the plaster grid into single plates, and the flattening roller (7) compacts and shapes the single plates. S3, Tracking weighing mechanism (3) dynamically grabs and weighs the cut single electrode plates at a preset frequency, and independently weighs the two rows of electrode plates and records the weight data. S4. The tracking weighing mechanism (3) feeds back the weight data to the control module (4), and the control module (4) determines the weight deviation characteristics based on the weight data. S5. The control module (4) decouples and adjusts the multiple coating dimensions of the coating hopper mechanism (2) based on the weight deviation characteristics.

10. The electrode coating method as described in claim 9, characterized in that, In step S5, the control module (4) decouples and adjusts multiple coating dimension states of the coating hopper mechanism (2) based on the weight deviation characteristics, including: When the weight deviation characteristic is an overall weight deviation, the control module (4) adjusts the coating state or longitudinal position of the coating hopper mechanism (2); When the weight deviation characteristic is a lateral weight deviation, the control module (4) adjusts the lateral posture of the paste hopper mechanism (2); The adjustment of the paste application state includes controlling the first servo motor (23) to drive the stirring shaft (22) to adjust the rotation speed; the adjustment of the lateral posture includes controlling the second servo motor (24) to drive the paste hopper (21) to adjust the tilt; the adjustment of the longitudinal position includes controlling the third servo motor (25) to drive the paste hopper (21) to adjust the lifting height.

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