Calibration device and calibration method for gas adding unit in gluing process

Abstract

The invention discloses a calibration device and a calibration method for a gas adding unit in a gluing process, and relates to the technical field of gas adding amount calibration, the calibration device comprises a transparent water tank, a measuring cup, a gas adding pipe, an exhaust pipe, a control valve, a detection device, a control device and a calibration device, the lower end opening of the measuring cup is communicated with the sealing cavity; the gas inlet end of the gas filling pipe is connected with the gas outlet of the gas filling unit, and the gas outlet end of the gas filling pipe is arranged at the upper end in the measuring cup; two ends of the exhaust pipe are hermetically connected with the measuring cup and the control valve respectively; the gas filling unit is used for filling gas into the measuring cup through a gas filling pipe; the detection device is used for detecting water level information in the measuring cup; and the calibration device can calibrate the gas filling amount of the gas filling unit. Comparing the gas quantity information with preset gas quantity information through a control device, and obtaining calibration parameters of the gas filling unit; and the calibration device is controlled to calibrate the gas filling unit according to the calibration parameters, so that the calibration precision and efficiency are improved.

Description

Technical Field

[0001] This invention relates to the field of gas filling calibration technology, and in particular to a calibration device and calibration method for a gas filling unit in a coating process. Background Technology

[0002] In the adhesive coating process, the stability of the gas supply from the gas filling unit is a core factor determining the final product quality. Traditional gas filling units generally lack dedicated and standardized calibration devices. When maintenance work is required (such as replacing gas filling valves or adjusting gas circuit components), due to the lack of unified calibration benchmarks and methods, operators can only rely on personal experience or simple flow tests to set parameters, making it difficult to accurately restore the gas supply to the standard level before maintenance. During long-term use, as the equipment ages, the gas supply will continuously deviate from the preset value due to the combined effects of multiple factors such as component wear, gas pressure fluctuations, and changes in ambient temperature. This will eventually lead to frequent problems of over- or under-filling during the adhesive coating process. This not only seriously damages the consistency of the adhesive coating effect but may also cause a large number of products to be scrapped, resulting in significant production losses and high cost waste for the enterprise. Summary of the Invention

[0003] The purpose of this invention is to provide a calibration device and calibration method for an air-filling unit in a coating process, so as to solve the problems existing in the prior art and improve calibration accuracy and efficiency.

[0004] To achieve the above objectives, the present invention provides the following solution: This invention provides a calibration device for an aeration unit in a coating process, comprising a transparent water tank, a measuring cup, an aeration pipe, an exhaust pipe, a control valve, a detection device, a control device, and a calibration device. The transparent water tank has a sealed cavity. The measuring cup is fixedly connected to the sealed cavity of the transparent water tank, with its opening facing downwards and its lower opening communicating with the sealed cavity. The inlet end of the aeration pipe is connected to the outlet end of the aeration unit, and the outlet end of the aeration pipe is located at the upper end of the measuring cup and inside the measuring cup. Both ends of the exhaust pipe are respectively sealed to the measuring cup and the control valve. The aeration unit can add gas into the measuring cup through the aeration pipe. The detection device is used to detect the water level information in the measuring cup. Both the detection device and the calibration device are communicatively connected to the control device. The calibration device is connected to the aeration unit and can calibrate the aeration volume of the aeration unit.

[0005] In one embodiment, the measuring cup is a graduated measuring cup, and the detection device is a visual inspection device.

[0006] In one embodiment, the control valve is a solenoid valve, and the solenoid valve is signal-connected to the control device.

[0007] In one embodiment, the gas filling tube extends from the lower opening of the measuring cup to the upper end of the measuring cup, and the gas outlet of the gas filling tube is arranged downwards.

[0008] The present invention also provides a calibration method for an air-filling unit based on a calibration device for an air-filling unit in the aforementioned adhesive coating process, comprising the following steps: S1. Add water to the transparent water tank and ensure that the water level in the transparent water tank is not higher than the measuring cup; S2. Close the control valve; open the gas filling unit to allow gas to flow into the measuring cup through the gas filling pipe; detect the water level in the measuring cup using the detection device; obtain the gas volume information in the measuring cup through the water level information; compare the gas volume information with the preset gas volume information using the control device and obtain the calibration parameters for the gas filling unit; control the calibration device to calibrate the gas filling unit according to the calibration parameters.

[0009] In one embodiment, S1 further includes: after adding water to the transparent water tank, closing the control valve; introducing gas into the gas filling pipe through the gas filling unit until all the water in the gas filling pipe is discharged; and opening the control valve to completely discharge the gas in the measuring cup.

[0010] In one embodiment, S2 further includes: when the difference between the gas volume in the measuring cup and the preset gas volume in the control device is greater than a preset accuracy threshold, controlling the calibration device to reduce the gas volume of the gas filling unit; and when the difference between the preset gas volume in the control device and the gas volume in the measuring cup is greater than a preset accuracy threshold, controlling the calibration device to increase the gas volume of the gas filling unit.

[0011] In one embodiment, step S3 is repeated until the deviation between the gas quantity information and the preset gas quantity information is less than the preset accuracy threshold.

[0012] In one embodiment, S3 further includes: the control device adjusting the calibration frequency according to the magnitude of the preset accuracy threshold.

[0013] In one embodiment, step S3 is repeated until the deviation between the gas quantity information and the preset gas quantity information is less than the preset accuracy threshold for three consecutive times, at which point the calibration is stopped.

[0014] The present invention achieves the following technical effects compared to the prior art: This invention provides a calibration device and method for an aeration unit in an adhesive coating process, comprising a transparent water tank, a measuring cup, an aeration pipe, an exhaust pipe, a control valve, a detection device, a control device, and a calibration device. The transparent water tank has a sealed cavity. The measuring cup is fixedly connected to the sealed cavity of the transparent water tank, with its opening facing downwards and its lower opening communicating with the sealed cavity. The inlet end of the aeration pipe is connected to the outlet end of the aeration unit, and the outlet end of the aeration pipe is located at the upper end of the measuring cup and inside the measuring cup. Both ends of the exhaust pipe are sealed to the measuring cup and the control valve, respectively. The aeration unit can add gas into the measuring cup through the aeration pipe. The detection device is used to detect the water level information in the measuring cup. Both the detection device and the calibration device are communicatively connected to the control device. The calibration device is connected to the aeration unit and can calibrate the aeration volume of the aeration unit.

[0015] Water is added to a transparent water tank until the water level is no higher than that of the measuring cup; the control valve is closed; the gas filling unit is opened, allowing gas to be introduced into the measuring cup through the gas filling pipe; the water level in the measuring cup is detected by a detection device; the gas quantity in the measuring cup is obtained from the water level information by a control device, which compares the gas quantity information with preset gas quantity information to obtain calibration parameters for the gas filling unit; and the calibration device is controlled to calibrate the gas filling unit according to the calibration parameters. This invention uses a detection device, a control device, and a calibration device for calibration, which helps improve calibration accuracy and efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments 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.

[0017] Figure 1 This is a schematic diagram of the calibration device for the air-filling unit in the adhesive coating process provided in Example 1. Figure 1 ; Figure 2 This is a schematic diagram of the calibration device for the air-filling unit in the adhesive coating process provided in Example 1. Figure 2 ; Figure 3 This is a schematic diagram of the gas filling unit provided in Example 1; Figure 4 for Figure 3 Sectional view of AA; Figure 5 for Figure 3 Sectional view of BB; In the diagram: 100. Calibration device for the gas filling unit in the adhesive coating process; 1. Transparent water tank; 2. Measuring cup; 3. Gas filling pipe; 4. Exhaust pipe; 5. Control valve; 6. Detection device; 7. Control device; 701. Control button; 8. Calibration device; 9. Gas filling unit; 901. Drive cylinder; 902. Moving crossbeam; 903. Bearing; 904. Adjusting gear; 905. Mounting bracket; 906. Adjusting top block; 907. Moving middle frame; 908. Gas distribution block; 909. Needle valve; 910. Valve seat; 10. Fixed base; 11. Top cover; 12. Fixed bracket; 13. Vision sensor bracket; 14. Motor bracket. Detailed Implementation

[0018] The technical solutions of the embodiments 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. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] It should be noted that in the description of this invention, the terms "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "center," "longitudinal," "transverse," "length," "width," "thickness," "vertical," "horizontal," "top," "bottom," "clockwise," and "counterclockwise," etc., indicating directional or positional relationships, are based on the directional or positional relationships shown in the accompanying drawings. These are merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Additionally, it should be noted that in the description of this invention, unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or a connection within two elements. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0020] The purpose of this invention is to provide a calibration device and calibration method for an air-filling unit in a coating process, so as to solve the problems existing in the prior art and improve calibration accuracy and efficiency.

[0021] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] Example 1 like Figures 1-5 As shown, this embodiment provides a calibration device 100 for an aeration unit in a coating process, including a transparent water tank 1, a measuring cup 2, an aeration pipe 3, an exhaust pipe 4, a control valve 5, a detection device 6, a control device 7, and a calibration device 8. The transparent water tank 1 has a sealed cavity; the measuring cup 2 is fixedly connected to the sealed cavity of the transparent water tank 1, with its opening facing downwards, and its lower opening communicating with the sealed cavity; the inlet end of the aeration pipe 3 is used to connect to the outlet of the aeration unit 9, and the outlet end of the aeration pipe 3 is located at the upper end of the measuring cup 2 and inside the measuring cup 2; both ends of the exhaust pipe 4 are sealed to the measuring cup 2 and the control valve 5, respectively; the aeration unit 9 can add gas to the measuring cup 2 through the aeration pipe 3; the detection device 6 is used to detect the water level information in the measuring cup 2; both the detection device 6 and the calibration device 8 are communicatively connected to the control device 7; the calibration device 8 is connected to the aeration unit 9 and can calibrate the aeration amount of the aeration unit 9.

[0023] Water is added to the transparent water tank 1, ensuring the water level is no higher than that of the measuring cup 2. The water in the transparent water tank 1 enters the measuring cup 2 through the lower opening. The control valve 5 is closed. The gas supply unit 9 is opened, allowing gas to flow into the measuring cup 2 through the gas supply pipe 3. The water level in the measuring cup 2 is detected by the detection device 6. The control device 7 obtains the gas volume information in the measuring cup 2 based on the water level information, compares the gas volume information with the preset gas volume information, and obtains the calibration parameters for the gas supply unit 9. The calibration device 8 is then used to calibrate the gas supply unit 9 according to the calibration parameters. This embodiment uses the detection device 6, control device 7, and calibration device 8 for calibration, which helps improve calibration accuracy and efficiency.

[0024] In some embodiments, the measuring cup 2 is a graduated measuring cup, and the detection device 6 is a visual detection device 6, preferably a visual sensor.

[0025] In some implementations, the control valve 5 is a solenoid valve, which is signal-connected to the control device 7.

[0026] In some embodiments, the gas filling pipe 3 extends from the lower opening of the measuring cup 2 to the upper end of the measuring cup 2, and the gas outlet of the gas filling pipe 3 is set downward.

[0027] In some implementations, the gas supply pipe 3 is a U-shaped pipe, and the calibration device 8 is a servo motor.

[0028] In some embodiments, the gas filling unit 9 includes a drive cylinder 901, a moving crossbeam 902, a bearing 903, an adjusting gear 904, a mounting bracket 905, an adjusting top block 906, a moving middle frame 907, a gas distribution block 908, a needle valve 909, and a valve seat 910. The mounting bracket 905 is disposed above the moving middle frame 907, and a compressed spring is disposed between the mounting bracket 905 and the moving middle frame 907. The mounting bracket 905 is machined with a groove for fixing the adjusting gear 904, and the adjusting top block 906 passes through the adjusting gear 904. The adjusting top block 906 is threadedly connected to the adjusting gear 904 and the adjusting top block 906. The bearing 903 is connected to the moving crossbeam 902 and is located below the adjusting top block 906. The drive cylinder 901 is bolted to the mounting bracket 905, and its output end is connected to the moving crossbeam 902, enabling the moving crossbeam 902 to drive the bearing 903 to reciprocate. The valve needle is fixed to the moving middle frame 907 with a nut, and the valve seat 910 is fixed to the air distribution block 908 with screws. The spring continuously applies pressure to the moving middle frame 907 by compression, pushing the valve needle towards the valve seat 910, thus closing the air supply unit 9. The drive cylinder 901 drives the bearing 903 to move, changing the relative position of the bearing 903 and the adjusting top block 906. When the highest point of the bearing 903 contacts the adjusting top block 906, the needle valve 909 can move upward to open, thus opening the air supply unit 9. The calibration device 8 is meshed with the adjusting gear 904. The rotation of the calibration device 8 can drive the adjusting gear 904 to rotate, which in turn causes the adjusting top block 906 to rotate. This causes the adjusting top block 906 to move relative to the moving middle frame 907, thereby adjusting the opening stroke of the needle valve 909 and realizing the adjustment of the gas supply.

[0029] In some embodiments, a fixed base 10 supporting the overall structure is also included. The transparent water tank 1 is securely installed on the fixed base 10 by a high-strength fixing structure to ensure that it does not shake during the calibration process. The measuring cup is precisely fixed to the preset position of the upper cover 11 of the transparent water tank 1 by means of the fixing bracket 12, ensuring that the central axis of the measuring cup is aligned with or parallel to the gas outlet of the gas filling pipe 3 to prevent gas flow deviation. The gas filling pipe 3 is fixed to the upper cover 11 by precision welding process, and the welded parts are tested for air tightness to reduce or eliminate the risk of gas leakage.

[0030] Gas system connection: The top of the measuring cup is equipped with a dedicated vent hole, which is connected to one end of the exhaust pipe 4 through a sealing joint. The other end of the exhaust pipe 4 is sealed and connected to the air inlet of the solenoid valve, forming a complete gas discharge path of "measuring cup-exhaust pipe 4-solenoid valve", ensuring that gas can be discharged quickly as needed; the gas filling unit 9 is detachably fixed to the top cover 11 with screws, which is convenient for subsequent disassembly and maintenance and can ensure the positional accuracy after installation; the control button 701 of the control device 7 is fixed to the operating area of ​​the fixed base 10 with screws, which is convenient for the operator to trigger process commands, and the button signal is directly connected to the AI ​​intelligent control unit of the control device 7 to realize the real-time transmission of commands.

[0031] Intelligent sensing and drive system installation: The vision sensor is mounted on the vision sensor bracket 13. The vision sensor bracket 13 and the fixed base 10 are rigidly connected by bolts to form a stable whole, ensuring that the shooting angle and position of the vision sensor are constant (the shooting range must completely cover the scale area of ​​the measuring cup). It can continuously collect clear images of the gas volume in the measuring cup, providing a high-quality data source for the control device 7. The drive gear is connected to the rotating shaft of the servo motor by a key. The servo motor is fixedly mounted on the upper side of the motor bracket 14. The motor bracket 14 is tightly fixed to the preset mounting surface of the upper cover 11 by high-strength bolts, ensuring that the servo motor has no vibration or deviation during operation. The control signal line of the servo motor is connected to the AI ​​intelligent control unit, which can receive the drive commands issued by the AI ​​intelligent control unit in real time.

[0032] Example 2 This embodiment provides a calibration method for the gas filling unit 9 in the gas filling unit calibration device 100 in the adhesive coating process of Embodiment 1, including the following steps: S1. Add water to the transparent water tank 1 and ensure that the water level in the transparent water tank 1 is not higher than that in the measuring cup 2; S2. Close control valve 5; open gas filling unit 9, allowing gas to flow into measuring cup 2 through gas filling pipe 3; detect water level information in measuring cup 2 through detection device 6; control device 7 obtains gas quantity information in measuring cup 2 through water level information, compares gas quantity information with preset gas quantity information through control device 7 and obtains calibration parameters for gas filling unit 9; control calibration device 8 to calibrate gas filling unit 9 according to calibration parameters.

[0033] In some embodiments, S1 further includes: after adding water to the transparent water tank 1, closing the control valve 5; introducing gas into the gas filling pipe 3 through the gas filling unit 9 until all the water in the gas filling pipe 3 is discharged; and opening the control valve 5 to completely discharge the gas in the measuring cup 2. When adding water to the transparent water tank 1, a small amount of water may enter the gas filling pipe 3. Before calibration, the water in the gas filling pipe 3 should be drained to ensure the accuracy of the calibration.

[0034] In some embodiments, S2 further includes: when the difference between the amount of gas in the measuring cup 2 and the preset amount of gas in the control device 7 is greater than a preset accuracy threshold, controlling the calibration device 8 to reduce the amount of gas added by the gas adding unit 9; and when the difference between the preset amount of gas in the control device 7 and the amount of gas in the measuring cup 2 is greater than a preset accuracy threshold, controlling the calibration device 8 to increase the amount of gas added by the gas adding unit 9.

[0035] In some implementations, step S3 is repeated until the deviation between the gas quantity information and the preset gas quantity information is less than a preset accuracy threshold.

[0036] In some implementations, S3 further includes: the control device 7 adjusting the calibration frequency according to the magnitude of a preset accuracy threshold.

[0037] In some implementations, step S3 is repeated until the deviation between the gas quantity information and the preset gas quantity information is less than the preset accuracy threshold for three consecutive times, at which point the calibration stops.

[0038] The usage process in this embodiment is led by "control device 7". Through the coordination of visual data acquisition by a vision sensor and servo motor drive, the automatic and high-precision calibration of gas dispensing volume is achieved. The specific steps are as follows: 1. Preliminary preparations (AI initial matching) First, remove the gas filling unit 9 to be calibrated from the glue application equipment and fix it to the preset installation position on the top cover 11 with screws. During this process, it is necessary to ensure that the adjustment gear 904 of the gas filling unit 9 is precisely meshed with the drive gear on the servo motor rotating shaft (meshing gap ≤ 0.02mm). At the same time, input the model of the gas filling unit 9, the preset gas filling design value, and other parameters into the AI ​​intelligent control unit. The AI ​​intelligent control unit automatically matches the corresponding calibration algorithm model (such as the flow characteristic curves and adjustment coefficients of different models of gas filling units 9), laying the foundation for subsequent intelligent adjustment.

[0039] 2. Water injection operation (AI-assisted monitoring) Slowly pour clean water into the transparent water tank 1. During the pouring process, the AI ​​intelligent control unit can monitor the water level changes in the tank in real time through a visual sensor. When the water level approaches the highest point of the measuring cup, the AI ​​intelligent control unit prompts the operator to slow down the pouring speed through sound and light. When the water level in the transparent water tank 1 is level with the highest point of the measuring cup, the AI ​​intelligent control unit automatically sends a "pouring complete" signal to avoid excessive or insufficient water from affecting the calibration accuracy.

[0040] 3. Exhaust program (AI automatic control) A "start exhaust" command is sent to the AI ​​intelligent control unit via control button 701. The AI ​​intelligent control unit then triggers the exhaust program: First, it controls the gas filling unit 9 to perform the gas filling action. The electrical program controls the drive cylinder 901 to reciprocate, driving the moving crossbeam 902 and the intermediate bearing 903 to move together. The moving bearing 903 contacts the adjusting top block 906, which is mounted on the moving middle frame 907, which is pressed downward by a spring. A valve needle is mounted below the moving middle frame 907, and a valve seat 910 is mounted on the gas distribution block 908. Gas can enter the gap between the valve needle and the valve seat 910 through the gas distribution block 908. When the drive cylinder 901 moves back and forth, the valve needle will intermittently disengage from the valve seat 910, thereby venting gas through the gap between them. The adjusting gear 904 can be rotated to adjust the gap between the adjusting top block 906 and the bearing 903, thereby calibrating the exhaust volume. Gas enters the measuring cup through a U-shaped tube. The AI ​​intelligent control unit monitors the water level changes inside the U-shaped tube using a visual sensor. When it detects that the water inside the U-shaped tube has been completely emptied by the gas, it immediately controls the solenoid valve to open, completely purging the gas previously retained in the measuring cup. During the purging process, the AI ​​intelligent control unit monitors the gas pressure changes inside the measuring cup 2 in real time. When the liquid level in the measuring cup is equal to the liquid level in the transparent water tank 1, it indicates that the gas pressure has dropped to atmospheric pressure. Preferably, when filling with water, the water level is exactly level with the top of the measuring cup. At this point, when the intelligent visual sensor monitors that all the gas has been expelled and the cup is full of water, it indicates that the gas pressure has dropped to atmospheric pressure. At this time, it controls the solenoid valve to close, completing the purging process. No manual intervention is required throughout the entire process, avoiding human error.

[0041] 4. Formal calibration (AI visual analysis + data comparison) Press the control button 701 again to send the "start calibration" command to the AI ​​intelligent control unit. The AI ​​control program starts: on the one hand, it controls the gas filling unit 9 to continuously add gas at a preset frequency. The generated gas is directionally collected into the measuring cup through the U-shaped tube. On the other hand, it controls the vision sensor to take pictures of the gas volume in the measuring cup at a frequency of no less than 10 frames / second. The collected images are transmitted to the AI ​​vision recognition module of the control device 7 in real time. The AI ​​vision recognition module accurately calculates the gas volume corresponding to each frame of the image through image segmentation and scale recognition algorithms, and compares it with the preset design value input in real time to generate a dynamic deviation curve (such as the "time-volume deviation" curve).

[0042] The specific implementation method is as follows: First, the visual sensor is calibrated, which requires obtaining the intrinsic and extrinsic parameters of the visual sensor, focal length, principal point coordinates, distortion coefficient, pixel-to-real-world ratio (mm / pixel), and the relative position and angle of the visual sensor to the container. After the visual sensor calibration is completed, an edge detection-based algorithm and a volume calculation model are applied to calculate the volume of gas inside the calibration device. The algorithm is as follows: Class LiquidVolumeCalculator: / / Determine the conversion ratio from pixels to actual size / / def __init__(self, camera_params, container_params): self.camera_params = camera_params self.container_params = container_params self.pixel_to_mm_ratio = self.calibrate_pixel_ratio() def calibrate_pixel_ratio(self): / / Calculate using a reference object of known dimensions / / reference_length_pixels = L1 / / Pixel length of the reference object in the image / / reference_length_mm = L2 / / Actual length of the reference object (mm) / / return reference_length_mm / reference_length_pixels def process_image(self, image): / / Image Preprocessing / / processed = self.preprocess_image(image) / / Liquid level detection / / liquid_level_pixels = self.detect_liquid_level(processed) / / Convert to actual height / / liquid_height_mm = liquid_level_pixels self.pixel_to_mm_ratio / / Volume Calculation / / volume = self.calculate_volume(liquid_height_mm) return { 'liquid_height_mm': liquid_height_mm, 'volume_ml': volume, 'liquid_level_pixels': liquid_level_pixels. 5. Parameter Adjustment (AI Closed-Loop Control) When the AI ​​intelligent control unit detects a deviation between the actual gas volume in the measuring cup and the design value, it immediately initiates closed-loop adjustment logic: If the actual gas volume is greater than the design value, the AI ​​intelligent control unit sends a control command to the servo motor to "rotate counterclockwise by X angle" (the X angle is calculated by the AI ​​intelligent control unit based on the deviation; the larger the deviation, the larger the adjustment angle, with a maximum adjustment angle ≤ 5°). The servo motor drives the adjustment device of the gas filling unit 9 to reduce the gas filling amount. If the actual gas volume is less than the design value, the AI ​​intelligent control unit sends a command to "rotate clockwise by -X angle," and the servo motor executes the corresponding action to increase the gas filling amount. Throughout the adjustment process, the AI ​​intelligent control unit monitors the gas filling amount changes in real time and dynamically corrects the rotation angle of the servo motor to avoid overshoot or under-adjustment.

[0043] The control algorithm of the AI ​​intelligent control unit is the PID algorithm, and the calculation formula is: Where PV is the actual gas volume, SP is the gas filling design value of the gas filling device, output is the output value of the X angle control, Kp is the proportional coefficient, Ki is the integral coefficient, Kd is the differential coefficient, and d(SP-PV) / dt is the differential term.

[0044] 6. Cyclic calibration (AI adaptive judgment) After one adjustment is completed, the AI ​​intelligent control unit automatically triggers the cyclic calibration logic: restart the venting program to empty the gas in the measuring cup; then restart the formal calibration program again, repeating the "gas filling-photographing-AI analysis-servo adjustment" steps; the AI ​​intelligent control unit automatically adjusts the calibration frequency according to the preset accuracy threshold of each calibration (the smaller the preset accuracy threshold, the higher the adjustment accuracy and the more calibrations), until the deviation between the gas volume in the measuring cup and the design value is less than the preset accuracy threshold (e.g., ±0.5%) in 3 consecutive calibrations. At this time, the AI ​​intelligent control unit determines "calibration qualified", automatically terminates the calibration process, and outputs the calibration results (e.g., gas filling volume after calibration, number of calibrations, final deviation value, etc.) on the display screen; the gas filling volume of gas filling unit 9 has reached the design standard and can be removed and reinstalled in the glue coating equipment for use.

[0045] This invention achieves automated, high-precision, cyclical adjustment of the gas dispensing unit 9 through end-to-end intelligent collaboration of "visual sensor visual acquisition → AI data processing → servo motor execution." Calibration can be completed without manual intervention, preventing errors caused by human experience and significantly improving calibration efficiency and accuracy. This effectively ensures the operational stability of the adhesive coating gas dispensing unit 9 and the consistency of product quality. This invention establishes a unified, reusable, and self-adjusting calibration benchmark for the adhesive coating gas dispensing unit 9, ensuring that the gas dispensing volume can be accurately measured, analyzed, and dynamically adjusted through the calibration device and method of this invention after maintenance or during daily use.

[0046] This invention enables the AI ​​intelligent control unit to perform multi-dimensional comparative analysis of "actual gas volume - standard value," generating quantitative deviation parameters that include the magnitude and trend of the deviation. Operators can directly adjust the control parameters of the gas dispensing device based on the parameters output by the AI ​​intelligent control unit or by the AI ​​intelligent control unit automatically triggering adjustment commands, so that the gas volume can be stably restored to the preset standard.

[0047] This invention can effectively solve the problems of gas filling deviation after maintenance and gas filling loss during daily use caused by the lack of calibration benchmark and intelligent adjustment in traditional gas filling devices, ensuring the stability and consistency of the adhesive coating and gas filling process, and significantly improving product quality and production efficiency.

[0048] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A calibration device for an air-filling unit in a coating process, characterized in that: The device includes a transparent water tank, a measuring cup, a gas filling pipe, an exhaust pipe, a control valve, a detection device, a control device, and a calibration device. The transparent water tank has a sealed cavity. The measuring cup is fixedly connected to the sealed cavity of the transparent water tank, with its opening facing downwards and its lower opening communicating with the sealed cavity. The inlet end of the gas filling pipe is connected to the outlet end of a gas filling unit, and the outlet end of the gas filling pipe is located at the upper end of the measuring cup and inside the measuring cup. Both ends of the exhaust pipe are sealed to the measuring cup and the control valve, respectively. The gas filling unit can add gas to the measuring cup through the gas filling pipe. The detection device is used to detect the water level information in the measuring cup. Both the detection device and the calibration device are communicatively connected to the control device. The calibration device is connected to the gas filling unit and can calibrate the gas filling amount of the gas filling unit.

2. The calibration device for the air-filling unit in the adhesive coating process according to claim 1, characterized in that: The measuring cup is a graduated measuring cup, and the detection device is a visual detection device.

3. The calibration device for the air-filling unit in the adhesive coating process according to claim 1, characterized in that: The control valve is a solenoid valve, and the solenoid valve is signal-connected to the control device.

4. The calibration device for the air-filling unit in the adhesive coating process according to claim 1, characterized in that: The gas filling tube extends from the lower opening of the measuring cup to the upper end of the measuring cup, with the gas outlet of the gas filling tube facing downwards.

5. A calibration method for an air-filling unit in a coating process according to any one of claims 1 to 4, characterized in that: Includes the following steps: S1. Add water to the transparent water tank and ensure that the water level in the transparent water tank is not higher than the measuring cup; S2. Close the control valve; open the gas filling unit to allow gas to flow into the measuring cup through the gas filling pipe; detect the water level in the measuring cup using the detection device; obtain the gas volume information in the measuring cup through the water level information; compare the gas volume information with the preset gas volume information using the control device and obtain the calibration parameters for the gas filling unit; control the calibration device to calibrate the gas filling unit according to the calibration parameters.

6. The gas refueling unit calibration method according to claim 5, characterized in that: S1 further includes: after adding water to the transparent water tank, closing the control valve; introducing gas into the gas filling pipe through the gas filling unit until all the water in the gas filling pipe is discharged; and opening the control valve to completely discharge the gas in the measuring cup.

7. The gas refueling unit calibration method according to claim 5, characterized in that: S2 further includes: when the difference between the gas volume in the measuring cup and the preset gas volume in the control device is greater than a preset accuracy threshold, controlling the calibration device to reduce the gas volume of the gas filling unit; when the difference between the preset gas volume in the control device and the gas volume in the measuring cup is greater than a preset accuracy threshold, controlling the calibration device to increase the gas volume of the gas filling unit.

8. The gas refueling unit calibration method according to claim 7, characterized in that: S3. Repeat step S2 until the deviation between the gas quantity information and the preset gas quantity information is less than the preset accuracy threshold.

9. The gas refueling unit calibration method according to claim 8, characterized in that: S3 further includes: the control device adjusts the calibration frequency according to the magnitude of the preset accuracy threshold.

10. The gas refueling unit calibration method according to claim 8, characterized in that: S3. Repeat step S2 until the deviation between the gas quantity information and the preset gas quantity information is less than the preset accuracy threshold for three consecutive times, then stop the calibration.

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