Dispensing system of double-glue-path automatic equipment

Abstract

The invention relates to the technical field of dispensing, in particular to a double-glue-path automatic equipment dispensing system. Comprising a double-liquid metering system, a double-liquid dispensing valve and a glue nozzle, and the dispensing method for achieving the double-glue-path automatic equipment comprises the steps that a to-be-dispensed task is obtained; analyzing a to-be-dispensed task, and determining a component proportion; controlling the double-liquid metering system to convey the glue solution to the double-liquid dispensing valve according to the component proportion; obtaining glue outlet information of the double-liquid dispensing valve; analyzing the glue discharging information, and determining a current glue discharging state; determining whether the components are uniformly mixed or not according to the glue outlet state; if mixing is uniform, glue dispensing operation is started; and after the operation is finished, the double-liquid dispensing valve is controlled to execute glue back suction, so that the glue liquid is retracted into the glue nozzle. The phenomenon of non-uniformity or separation in the dispensing process is prevented, and unstable glue solution performance or poor dispensing effect caused by non-uniform mixing is avoided. The glue is sucked back after the dispensing operation is finished, so that the waste of the glue is reduced, the glue is prevented from being cured outside the glue nozzle, and the service life of the glue nozzle is prolonged.

Description

Technical Field

[0001] This application relates to the field of dispensing technology, and in particular to a dispensing system for a dual-fluid path automated device. Background Art

[0002] With the continuous development of automation technology, the dispensing system of dual-fluid path automated devices has been widely used in multiple industries, especially in fields such as precision manufacturing, electronic component assembly, and pharmaceutical packaging. The main function of the dispensing system of dual-fluid path automated devices is to precisely control the mixing ratio of two different adhesives and accurately coat the adhesive onto the specified position through precise dispensing operations.

[0003] In traditional dispensing systems of dual-fluid path automated devices, problems such as dispensing failure, insufficient or excessive adhesive occur. Therefore, how to ensure the stable flow rate and precise mixing of the adhesive under different environmental conditions has become a key issue in technology development. Summary of the Invention

[0004] This application provides a dispensing system for a dual-fluid path automated device to solve the above problems.

[0005] In a first aspect, this application provides a dispensing system for a dual-fluid path automated device, including a dual-liquid metering system, a dual-liquid dispensing valve, and a nozzle, for implementing a dispensing method for a dual-fluid path automated device. The dispensing system for the dual-fluid path automated device further includes a server. The dispensing method for the dual-fluid path automated device is applied to the server and includes: Obtain a dispensing task to be processed; analyze the dispensing task to determine the component ratio; According to the component ratio, control the dual-liquid metering system to convey the adhesive to the dual-liquid dispensing valve; Obtain the glue discharge information of the dual-liquid dispensing valve; analyze the glue discharge information to determine the current glue discharge state; According to the glue discharge state, determine whether the components are evenly mixed; if evenly mixed, start the dispensing operation; After the end of a unit dispensing operation, control the dual-liquid dispensing valve to perform glue back-suction so that the adhesive retracts into the nozzle.

[0006] Through this solution, obtaining the dispensing task to ensure the start of the dispensing process helps to prepare the corresponding glue and dispensing parameters according to production requirements. By analyzing the dispensing task to determine the required component ratio, it helps to ensure that the mixed glue can meet the performance requirements. Precisely controlling the delivery of glue by the dual-component metering system ensures that the components are mixed in a predetermined ratio. Obtaining the dispensing information helps to monitor the stability of the dispensing process and ensure that the glue is output at the expected flow rate. By analyzing the dispensing information to judge the fluidity and mixing uniformity of the glue, it helps to prevent unevenness or separation during the dispensing process. Determining whether the components are evenly mixed to ensure that the mixed glue is already uniform, avoiding unstable glue performance or poor dispensing effect caused by uneven mixing. After confirming that the glue is evenly mixed, starting the dispensing operation ensures the consistency and accuracy of the dispensing process and improves product quality. After the dispensing operation is completed, performing glue back suction reduces glue waste, prevents the glue from curing outside the nozzle, and thus extends the service life of the nozzle.

[0007] Optionally, after the unit dispensing operation is completed, controlling the dual-component dispensing valve to perform glue back suction includes: Determining the fluidity of the glue according to the component ratio; Analyzing the dispensing task to determine the glue output per unit time; Obtaining the basic information of the nozzle and determining the nozzle diameter according to the basic information; Determining the back suction parameters according to the glue output per unit time, the nozzle diameter, and the fluidity of the glue; After the unit dispensing operation is completed, controlling the dual-component dispensing valve to perform glue back suction according to the back suction parameters.

[0008] Through this solution, by analyzing the component ratio to predict the fluidity of the glue, it helps to ensure that during the dispensing process, the glue can flow out at an appropriate flow rate and pressure, avoiding dispensing problems caused by insufficient or excessive fluidity. By analyzing the dispensing task to calculate the glue output per unit time, it helps to ensure that the supply of glue during the dispensing process matches the demand, avoiding insufficient or excessive glue. By obtaining the basic information of the nozzle, the nozzle diameter is determined. The selection of the nozzle diameter directly affects the glue output per unit time and the fluidity of the glue. Therefore, correctly selecting the nozzle diameter helps to ensure dispensing accuracy. According to the glue output per unit time, the nozzle diameter, and the fluidity of the glue, determining the appropriate back suction parameters helps to ensure that the glue effectively retracts into the nozzle, reducing glue waste and dripping. After the unit dispensing operation is completed, controlling the dual-component dispensing valve to perform glue back suction according to the determined back suction parameters helps to prevent the glue from curing outside the nozzle and extends the service life of the nozzle.

[0009] Optionally, the analyzing the dispensing task to determine the glue output per unit time includes: Analyze the dispensing task to be performed and determine the saturation amount of the dispensed material. Obtain the current ambient temperature; based on the current ambient temperature and the component ratio, determine the environmental impact on the dispensing amount. Based on the environmental impact and the saturation amount of the dispensed material, determine the dispensing amount per unit time.

[0010] Through this solution, analyzing the dispensing task to be performed and calculating the total amount of the dispensed material required to complete the dispensing task, i.e., the saturation amount of the dispensed material, helps to ensure that the supply and demand of the dispensed material during the dispensing process are matched, avoiding insufficient or excessive dispensed material. Obtaining the current ambient temperature through an ambient temperature sensor helps to affect the fluidity and curing speed of the colloid, and also helps to control the dispensing amount. Based on the current ambient temperature and the component ratio of the dispensed material, determining the environmental impact on the dispensing amount helps to predict and adjust the dispensing amount to adapt to different working environments. Combining the analysis results of the saturation amount of the dispensed material and the environmental impact to calculate the dispensing amount per unit time helps to improve the dispensing accuracy and reduce the waste of the dispensed material.

[0011] Optionally, the determining the environmental impact on the dispensing amount based on the current ambient temperature and the component ratio includes: Based on the component ratio, determine the change in the viscosity of the dispensed material according to the current ambient temperature. Based on the change in the viscosity of the dispensed material, determine the deviation in the fluidity of the dispensed material. Based on the deviation in the fluidity of the dispensed material, determine the environmental impact on the dispensing amount.

[0012] Through this solution, predicting the change in the viscosity of the dispensed material based on the component ratio and the current ambient temperature helps to affect the fluidity and mixing uniformity of the colloid, and accurately predicting the change in viscosity helps to adjust the dispensing parameters to ensure that the dispensed material flows out at an appropriate flow rate and pressure during the dispensing process. Based on the change in the viscosity of the dispensed material, judging the deviation in the fluidity of the dispensed material helps to adjust the dispensing information to compensate for the change in the fluidity of the colloid caused by the change in the viscosity of the dispensed material, thereby maintaining the consistency and accuracy of the dispensing. By analyzing the deviation in the fluidity of the dispensed material, evaluating the environmental impact of the current environmental factors on the dispensing amount ensures the stability and accuracy of the dispensing amount in different environments.

[0013] Optionally, the determining the back-suction parameter based on the dispensing amount per unit time, the nozzle diameter, and the fluidity of the colloid includes: Based on the fluidity of the colloid, determine the retraction speed of the dispensed material. Based on the nozzle diameter, determine the back-suction cross-sectional area. Based on the dispensing amount per unit time and the retraction speed of the dispensed material, calculate the back-suction time. Based on the back-suction cross-sectional area and the back-suction time, determine the back-suction negative pressure value, and use the back-suction negative pressure value as the back-suction parameter.

[0014] Through this solution, by analyzing the fluidity of the colloid and calculating the retraction speed of the glue liquid, it helps to ensure that after dispensing, the glue liquid retracts into the glue nozzle at an appropriate speed, avoiding glue dripping or curing. According to the diameter of the glue nozzle, the suction cross-sectional area is calculated, which helps to determine the pressure required for the glue liquid to retract. Combining the glue output per unit time and the retraction speed of the glue liquid, the suction time is calculated, which helps to ensure that the glue liquid can completely retract into the glue nozzle, avoiding glue waste and poor dispensing effect. According to the suction cross-sectional area and the suction time, the suction negative pressure value is calculated, which helps to ensure that the glue liquid can retract effectively.

[0015] Optionally, after controlling the dual-component dispensing valve to perform colloid suction, it further includes: Determining the curing time of the glue liquid according to the component ratio; Determining the maintenance cycle of the glue nozzle according to the curing time of the glue liquid; Determining the cleaning type according to the component ratio; Based on the maintenance cycle of the glue nozzle and the cleaning type, controlling the dual-component metering system to perform pulse flushing on the glue nozzle.

[0016] Through this solution, by analyzing the component ratio of the glue liquid and predicting the curing time of the glue liquid, it helps to ensure that during the dispensing process, the glue liquid cures within an appropriate time, avoiding dispensing problems caused by too long or too short curing time. According to the curing time of the glue liquid, the maintenance cycle of the glue nozzle is determined to ensure the cleaning state and dispensing effect of the glue nozzle. According to the component ratio of the glue liquid, the cleaning type is determined. Different glue liquids require different cleaning agents or cleaning methods to ensure the cleaning effect of the glue nozzle. Based on the maintenance cycle of the glue nozzle and the cleaning type, controlling the dual-component metering system to perform pulse flushing on the glue nozzle can effectively remove the residual glue liquid inside the glue nozzle and maintain the cleaning state of the glue nozzle.

[0017] Optionally, analyzing the dispensing information to determine the current dispensing state includes: Determining the infrared spectrum data and flow rate data of the glue liquid according to the dispensing information; Analyzing the infrared spectrum data to determine the intensity ratio of the characteristic absorption peaks of the components; Calculating the glue liquid throughput per unit time according to the flow rate data; Determining the current dispensing state according to the intensity ratio of the characteristic absorption peaks and the glue liquid throughput.

[0018] Through this solution, by determining the infrared spectrum data and flow rate data of the adhesive, it helps to monitor the composition and flow condition of the adhesive, providing basic data for the analysis of the glue dispensing state. Analyzing the infrared spectrum data and determining the intensity ratio of the characteristic absorption peaks of the components helps to judge whether the mixing ratio of the adhesive is accurate, and whether there are problems such as contamination or incomplete reaction. According to the flow rate data, calculating the amount of adhesive passing through the glue nozzle per unit time helps to monitor and control the adhesive supply during the glue dispensing process, ensuring the consistency and stability of the glue output. By analyzing the infrared spectrum data and determining the intensity ratio of the characteristic absorption peaks of the components to judge whether the mixing ratio of the adhesive is accurate, it helps to ensure that the composition of the adhesive meets the requirements of the glue dispensing task. Combining the intensity ratio of the characteristic absorption peaks and the amount of adhesive passing through per unit time to determine the current glue dispensing state helps to detect and solve problems in the glue dispensing process in a timely manner, ensuring the glue dispensing effect.

[0019] Optionally, the glue dispensing system of the dual-glue-path automated equipment further includes a flow rate sensor. The calculating the amount of adhesive passing through per unit time according to the flow rate data includes: Obtaining the pressure fluctuation data of the dual-liquid metering system; Analyzing the pressure fluctuation data to determine the influence of the pressure on the reading of the flow rate sensor; Filtering abnormal fluctuation segments according to the reading influence; Performing an integration operation on the filtered flow rate data to obtain the amount of adhesive passing through per unit time.

[0020] Through this solution, by using a pressure sensor to monitor the pressure fluctuation data of the dual-liquid metering system in real time, it helps to identify the flow state and operating condition of the adhesive. Analyzing the pressure fluctuation data helps to identify and diagnose problems affecting the glue dispensing accuracy, such as pipeline blockage, equipment wear, etc. Determining the influence of the pressure on the reading of the flow rate sensor helps to correct the flow rate data and improve the accuracy of the flow rate measurement. By filtering abnormal fluctuation segments, removing noise and interference, it improves the quality and stability. Performing an integration operation on the filtered flow rate data to obtain the amount of adhesive passing through per unit time helps to control the amount of glue dispensed.

[0021] Optionally, the determining the retraction speed of the adhesive according to the fluidity of the colloid includes: Obtaining the real-time temperature data after the adhesive is mixed; Calculating the apparent viscosity of the adhesive at the real-time temperature data according to the Arrhenius equation; Determining the inner wall roughness of the glue nozzle according to the basic information; Based on the apparent viscosity of the adhesive and the inner wall roughness of the glue nozzle, establishing a retraction resistance model; Based on the retraction resistance model, determining the retraction speed of the adhesive according to the fluidity of the colloid.

[0022] Through this solution, real-time monitoring of the temperature data after the glue liquid is mixed helps to ensure that the glue liquid works at the optimal temperature, thereby guaranteeing the fluidity and curing speed of the colloid. At the same time, it helps to prevent changes in the performance of the glue liquid caused by temperature fluctuations, which may affect the dispensing effect. Calculating the apparent viscosity of the glue liquid helps to identify the fluidity of the glue liquid at the current temperature, and also helps to control the dispensing volume and speed, improving the dispensing accuracy and the usage efficiency of the glue liquid. Determining the inner wall roughness of the dispensing nozzle helps to predict the flow resistance of the glue liquid inside the nozzle, thereby optimizing the dispensing parameters, reducing glue liquid waste, and helping to ensure that the glue liquid smoothly passes through the nozzle, avoiding wire drawing and dripping phenomena. Establishing a retraction resistance model helps to predict the flow resistance of the glue liquid during the retraction process, thereby controlling the retraction effect. At the same time, it helps to prevent the glue liquid from curing inside the nozzle, extending the service life of the nozzle. Determining the retraction speed of the glue liquid helps to control the retraction effect, ensuring that the glue liquid is completely retracted into the nozzle, avoiding glue liquid dripping or curing, reducing glue liquid waste, and improving production efficiency.

[0023] Optionally, controlling the dual-liquid metering system to perform pulsed flushing on the dispensing nozzle based on the maintenance cycle of the dispensing nozzle and the cleaning type includes: Calculating the cumulative pollution amount according to the maintenance cycle; Determining the pulse pressure and flushing duration according to the cumulative pollution amount and the cleaning type; Controlling the dual-liquid metering system to perform pulsed flushing on the dispensing nozzle according to the pulse pressure and the flushing duration.

[0024] Through this solution, by calculating the cumulative pollution amount, the accumulation of pollutants inside the dispensing nozzle can be identified, thereby determining the necessity and frequency of cleaning, which helps to prevent the accumulation of pollutants to a level that may affect the dispensing quality or cause equipment failure. According to the severity of pollution and the selected cleaning type, appropriate pulse pressure and flushing duration are determined to maximize the cleaning effect while avoiding equipment damage caused by over-cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0026] Figure 1 It is a schematic diagram of an application scenario provided by an embodiment of the present application; Figure 2 It is a flowchart of a dispensing system of a dual-glue path automatic device provided by an embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the following will clearly and completely describe the technical solutions in the embodiments of this application with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are some, but not all, of the embodiments of this application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts shall fall within the scope of protection of this application.

[0028] In addition, the term "and / or" in this document is merely a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally represents an "or" relationship between the associated objects before and after, unless otherwise specified.

[0029] The following further describes the embodiments of this application in detail with reference to the accompanying drawings of the specification.

[0030] In the traditional dispensing system of a double-glue-path automation device, problems such as dispensing failure, insufficient or excessive glue occur. Therefore, how to ensure the stable flow rate and precise mixing of the glue under different environmental conditions has become a key issue in technology development.

[0031] Based on this, this application provides a dispensing system for a double-glue-path automation device, which obtains a dispensing task to be performed; analyzes the dispensing task to be performed to determine the component ratio; controls a dual-liquid metering system to deliver glue to a dual-liquid dispensing valve according to the component ratio; obtains the glue dispensing information of the dual-liquid dispensing valve; analyzes the glue dispensing information to determine the current glue dispensing state; determines whether the components are evenly mixed according to the glue dispensing state; if they are evenly mixed, starts the dispensing operation; after the unit dispensing operation ends, controls the dual-liquid dispensing valve to perform glue suction so that the glue retracts into the inside of the glue nozzle. Obtaining the dispensing task to be performed helps to start the dispensing process and prepare the corresponding glue and dispensing parameters according to production requirements. By analyzing the dispensing task to be performed to determine the required component ratio, it helps to ensure that the mixed glue can meet the performance requirements. Precisely controlling the delivery of glue by the dual-liquid metering system ensures that the components are mixed in a predetermined ratio. Obtaining the glue dispensing information helps to monitor the stability of the dispensing process and ensure that the glue is output at the expected flow rate. By analyzing the glue dispensing information to judge the fluidity and mixing uniformity of the glue, it helps to prevent uneven or separation phenomena during the dispensing process. Determining whether the components are evenly mixed ensures that the mixed glue is already uniform, avoiding unstable glue performance or poor dispensing effect caused by uneven mixing. Starting the dispensing operation after confirming that the glue is evenly mixed ensures the consistency and accuracy of the dispensing process and improves product quality. Performing glue suction after the dispensing operation reduces glue waste and prevents the glue from curing outside the glue nozzle, thereby extending the service life of the glue nozzle.

[0032] Figure 1 A schematic diagram of an application scenario provided for this application. When dispensing glue using a dual-glue-path automated device, the method provided for this application is applied. Specifically, the method provided for this application is applied to the server in the dispensing system of the dual-glue-path automated device. The server interacts with the dual-liquid metering system, the dual-liquid dispensing valve, and the glue nozzle, obtains the dispensing tasks to be processed in the server database, determines the required component ratio by analyzing the dispensing tasks to be processed, and sends it to the dual-liquid metering system, so that the dual-liquid metering system outputs the glue to the dual-liquid dispensing valve according to the component ratio; obtains the glue dispensing information of the dual-liquid dispensing valve, determines the fluidity and mixing uniformity of the glue by analyzing the glue dispensing information, and starts the dispensing operation after confirming that the glue is evenly mixed. After the dispensing operation is completed, a signal is sent to the dual-liquid dispensing valve to perform glue back-suction, reducing the waste of glue and preventing the glue from curing outside the glue nozzle, thereby extending the service life of the glue nozzle.

[0033] For specific implementation methods, reference can be made to the following embodiments.

[0034] Figure 2 A flowchart of a dispensing system for a dual-glue-path automated device provided for an embodiment of this application. The dispensing system for the dual-glue-path automated device in this embodiment includes a dual-liquid metering system, a dual-liquid dispensing valve, and a glue nozzle, and is used to implement the dispensing method for the dual-glue-path automated device. The dispensing method for the dual-glue-path automated device includes: S201. Obtain the dispensing tasks to be processed; analyze the dispensing tasks to be processed and determine the component ratio; The dispensing tasks to be processed can be requirements such as the position, shape, glue type, and required glue amount of the dispensing operations that need to be completed on the production line.

[0035] The component ratio can be the ratio that two or more types of glue need to follow when mixing.

[0036] Specifically, the dispensing tasks to be processed are received from the database corresponding to the production line through a communication protocol. The received dispensing tasks to be processed are parsed to extract task data such as the type and mixing ratio of the glue related to dispensing. According to the parsed task data, the component ratio of two or more types of glue is calculated according to an empirical formula.

[0037] S202. Control the dual-liquid metering system to deliver the glue to the dual-liquid dispensing valve according to the component ratio; The dual-liquid metering system can be a system for precisely controlling the flow rates of two different types of glue. The dual-liquid system usually consists of a material bucket, a metering system, a control system, a dual-liquid dispensing valve, etc.

[0038] The glue can be a liquid material for bonding, sealing, or coating.

[0039] The two-component dispensing valve can be a valve used to control the flow rate of the adhesive liquid.

[0040] Specifically, according to the component ratio, corresponding parameters are set for the metering pump in the two-component metering system. Start the metering pump in the two-component metering system, and start conveying the adhesive liquid according to the set parameters. Through monitoring devices such as flow sensors and pressure sensors, the operating status of the metering pump and the conveying situation of the adhesive liquid are monitored in real time. The adhesive liquid mixed according to the set ratio is conveyed to the two-component dispensing valve. When the components are accurately metered in the two-component metering system, they are conveyed to the two-component dispensing valve through the feeding pipeline.

[0041] S203. Obtain the glue dispensing information of the two-component dispensing valve; analyze the glue dispensing information to determine the current glue dispensing status; The glue dispensing information can be data such as the flow rate and pressure of the adhesive liquid flow.

[0042] The current glue dispensing status can be the flow status of the adhesive liquid at the current time point.

[0043] Specifically, the glue dispensing information is collected through the sensor installed on the two-component dispensing valve. The collected glue dispensing information is processed through signal processing technology. Analyze the processed glue dispensing information, and according to the analysis result, judge the current glue dispensing status of the adhesive liquid.

[0044] S204. According to the glue dispensing status, determine whether the components are mixed evenly; if they are mixed evenly, start the dispensing operation; The components can be different components in the mixed adhesive liquid.

[0045] Being mixed evenly can mean that two or more adhesive liquids can be evenly distributed after mixing.

[0046] The dispensing operation can be the process of coating the mixed adhesive liquid onto the specified position according to the predetermined position and shape.

[0047] Specifically, when using the dispensing equipment for the first time for dispensing, the two-way glue needs to be started according to the required ratio until the glue is stably extruded from the glue nozzle. By analyzing the glue dispensing status, detect whether the components are mixed evenly, so as to determine whether the glue is stably extruded. If the detection result shows that the components have been fully mixed evenly, it is judged that the mixing is qualified. Once it is confirmed that the mixing of the components is qualified, start the dispensing operation.

[0048] S205. After the unit dispensing operation is completed, control the two-component dispensing valve to perform glue back suction so that the adhesive liquid retracts into the inside of the glue nozzle.

[0049] The unit dispensing operation can be a complete dispensing operation.

[0050] The inside of the glue nozzle can be the space inside the glue nozzle.

[0051] Specifically, after the single-point dispensing operation of the dual-liquid dispensing valve is completed, control the dual-liquid dispensing valve to close completely. Start the preset back-suction program and control the dual-liquid dispensing valve to perform colloid back-suction. Confirm through the sensor that the glue liquid has retracted into the nozzle interior.

[0052] In a specific implementation manner, in order to avoid problems caused by expansion in this embodiment, the pipeline in this embodiment is made of steel to reduce the influence brought by expansion.

[0053] Through this solution, obtain the dispensing task to be performed, ensure the start of the dispensing process, and help prepare the corresponding glue liquid and dispensing parameters according to production requirements. By analyzing the dispensing task to be performed, determine the required component ratio, which helps ensure that the mixed glue liquid can meet the performance requirements. Precisely control the dual-liquid metering system to deliver the glue liquid to ensure that the components are mixed in a predetermined ratio. Obtaining the dispensing information helps monitor the stability of the dispensing process and ensure that the glue liquid is output at the expected flow rate. By analyzing the dispensing information, judge the fluidity and mixing uniformity of the glue liquid, which helps prevent uneven or separation phenomena during the dispensing process. Determine whether the components are mixed evenly to ensure that the mixed glue liquid is already uniform, and avoid unstable glue liquid performance or poor dispensing effect caused by uneven mixing. Start the dispensing operation after confirming that the glue liquid is mixed evenly to ensure the consistency and accuracy of the dispensing process and improve product quality. After the dispensing operation is completed, perform colloid back-suction to reduce the waste of glue liquid, prevent the glue liquid from curing outside the nozzle, and thus extend the service life of the nozzle.

[0054] In some embodiments, according to the component ratio, determine the colloid fluidity; analyze the dispensing task to be performed to determine the glue liquid output per unit time; obtain the basic information of the nozzle, and according to the basic information, determine the nozzle diameter; according to the glue liquid output per unit time, the nozzle diameter, and the colloid fluidity, determine the back-suction parameters; after the single-point dispensing operation is completed, control the dual-liquid dispensing valve to perform colloid back-suction according to the back-suction parameters.

[0055] The colloid fluidity can be the flowing ability of the glue liquid.

[0056] The glue liquid output per unit time can be the amount of glue liquid flowing out of the dispensing valve within a unit time.

[0057] The nozzle can be a component installed on the dispensing valve for coating the glue liquid to a specified position.

[0058] The basic information can be the basic parameters and characteristics such as the material, size, and shape of the nozzle.

[0059] The nozzle diameter can be the opening diameter of the nozzle.

[0060] The back-suction parameters can be parameters such as the glue liquid retraction speed, back-suction time, and back-suction negative pressure value used to control colloid back-suction.

[0061] Specifically, based on the component ratio, analyze physical properties such as the viscosity of the colloid and the current ambient temperature to determine the fluidity of the colloid. Analyze the dispensing task to be performed, and use complex geometric calculations to determine the amount of glue dispensed per unit time. Collect basic information about the dispensing nozzle, such as the material, size, shape, hardness, and surface treatment of the nozzle, through sensors. According to the collected basic information of the nozzle, use a high-precision measuring tool to measure the nozzle diameter. Based on the amount of glue dispensed per unit time and the nozzle diameter, calculate the retraction speed of the glue through hydrodynamic calculations. According to the calculated retraction speed of the glue and the amount of glue dispensed per unit time, determine the retraction time. Based on the fluidity of the colloid, the nozzle diameter, and the retraction speed, calculate and set the retraction negative pressure value. Based on the retraction speed of the glue, the retraction time, and the retraction negative pressure value, determine the retraction parameters. Control the dual-component dispensing valve to stop the dispensing operation, and the dispensing valve starts to perform glue retraction according to the determined retraction parameters.

[0062] Through this solution, by analyzing the component ratio and predicting the fluidity of the colloid, it helps to ensure that during the dispensing process, the glue can flow out at an appropriate flow rate and pressure, avoiding dispensing problems caused by insufficient or excessive fluidity. By analyzing the dispensing task to be performed and calculating the amount of glue dispensed per unit time, it helps to ensure that the supply of glue during the dispensing process matches the demand, avoiding insufficient or excessive glue. By obtaining the basic information of the nozzle, the nozzle diameter is determined. The selection of the nozzle diameter directly affects the amount of glue dispensed per unit time and the fluidity of the colloid. Therefore, correctly selecting the nozzle diameter helps to ensure dispensing accuracy. Based on the amount of glue dispensed per unit time, the nozzle diameter, and the fluidity of the colloid, determining appropriate retraction parameters helps to ensure that the glue effectively retracts into the nozzle, reducing glue waste and dripping. After the unit dispensing operation is completed, controlling the dual-component dispensing valve to perform glue retraction according to the determined retraction parameters helps to prevent the glue from curing outside the nozzle and extends the service life of the nozzle.

[0063] In some embodiments, analyze the dispensing task to be performed to determine the dispensing saturation amount; obtain the current ambient temperature; based on the current ambient temperature and the component ratio, determine the environmental impact on the amount of glue dispensed; based on the environmental impact and the dispensing saturation amount, determine the amount of glue dispensed per unit time.

[0064] The dispensing saturation amount can be the total amount of glue required to complete the dispensing task to be performed.

[0065] The current ambient temperature can be the real-time temperature of the environment where the dispensing task is located.

[0066] The environmental impact can be the potential impact of environmental factors on the amount of glue dispensed.

[0067] Specifically, analyze the dispensing task to extract parameters such as the dispensing position, shape, required glue volume, glue type, etc. According to the analysis results of the dispensing task, calculate the total amount of glue required to complete the dispensing task, that is, the dispensing saturation amount. Obtain the current working environment temperature through the environmental temperature sensor. According to the current environmental temperature and the component ratio of the glue, analyze the environmental impact on the glue output volume. Combine the analysis results of the dispensing saturation amount and the environmental impact to determine the glue output volume per unit time.

[0068] Through this solution, analyzing the dispensing task and calculating the total amount of glue required to complete the dispensing task, that is, the dispensing saturation amount, helps to ensure that the supply and demand of glue during the dispensing process are matched, avoiding insufficient or excessive glue. Obtaining the current environmental temperature through the environmental temperature sensor helps to affect the fluidity and curing speed of the colloid, and at the same time helps to control the glue output volume. Determining the environmental impact on the glue output volume according to the current environmental temperature and the component ratio of the glue helps to predict and adjust the glue output volume to adapt to different working environments. Combining the analysis results of the dispensing saturation amount and the environmental impact to calculate the glue output volume per unit time helps to improve the dispensing accuracy and reduce glue waste.

[0069] In some embodiments, based on the component ratio, according to the current environmental temperature, determine the change in glue viscosity; according to the change in glue viscosity, determine the deviation in glue fluidity; according to the deviation in glue fluidity, determine the environmental impact on the glue output volume.

[0070] The change in glue viscosity can be the change situation of the viscosity of the glue.

[0071] The deviation in glue fluidity can be the difference between the fluidity of the glue under actual use conditions and the fluidity under standard conditions.

[0072] Specifically, according to the component ratio and the current environmental temperature, use the Arrhenius equation to calculate the change in glue viscosity. Based on the change in glue viscosity, establish a fluidity model using the principles of fluid dynamics. According to the fluidity model, calculate the deviation in glue fluidity. Based on the deviation in glue fluidity, identify the environmental factors causing the deviation in glue fluidity, thereby evaluating the environmental impact of environmental factors on the glue output volume.

[0073] Through this solution, predicting the change in glue viscosity through the component ratio and the current environmental temperature helps to affect the fluidity and mixing uniformity of the colloid, and at the same time accurately predicting the change in viscosity helps to adjust the dispensing parameters to ensure that the glue flows out at an appropriate flow rate and pressure during the dispensing process. Judging the deviation in glue fluidity according to the change in glue viscosity helps to adjust the dispensing information to compensate for the change in colloid fluidity caused by the change in glue viscosity, thereby maintaining the consistency and accuracy of dispensing. By analyzing the deviation in glue fluidity, evaluating the environmental impact of current environmental factors on the glue output volume ensures the stability and accuracy of the glue output volume in different environments.

[0074] In some embodiments, the retraction speed of the glue is determined according to the fluidity of the colloid; the suction cross-sectional area is determined according to the nozzle diameter; the suction time is calculated according to the glue output per unit time and the retraction speed of the glue; the suction negative pressure value is determined according to the suction cross-sectional area and the suction time, and the suction negative pressure value is used as the suction parameter.

[0075] The retraction speed of the glue can be the flow speed of the glue during retraction.

[0076] The suction cross-sectional area can be the opening area of the nozzle.

[0077] The suction time can be the time required for the glue to retract from the dispensing position to the inside of the nozzle.

[0078] The suction negative pressure value can be the negative pressure value required to overcome the viscosity of the glue and effectively retract the glue during retraction.

[0079] Specifically, according to the fluidity of the colloid, the retraction speed of the glue is calculated using hydrodynamics. According to the nozzle diameter, the suction cross-sectional area is calculated using geometric formulas. According to the glue output per unit time and the retraction speed of the glue, the suction time required for the glue to retract from the dispensing position to the inside of the nozzle is calculated. According to the suction cross-sectional area and the suction time, the suction negative pressure value is calculated using hydrodynamics, and the calculated suction negative pressure value is used as the suction parameter.

[0080] Through this solution, by analyzing the fluidity of the colloid and calculating the retraction speed of the glue, it helps to ensure that after dispensing, the glue retracts into the nozzle at an appropriate speed, avoiding glue dripping or curing. According to the nozzle diameter, calculating the suction cross-sectional area helps to determine the pressure required for the glue to retract. Combining the glue output per unit time and the retraction speed of the glue to calculate the suction time helps to ensure that the glue can be completely retracted into the nozzle, avoiding glue waste and poor dispensing effect. According to the suction cross-sectional area and the suction time, calculating the suction negative pressure value helps to ensure that the glue can be effectively retracted.

[0081] In some embodiments, the curing time of the glue is determined according to the component ratio; the nozzle maintenance cycle is determined according to the curing time of the glue; the cleaning type is determined according to the component ratio; based on the nozzle maintenance cycle and the cleaning type, the dual-component metering system is controlled to perform pulsed flushing on the nozzle.

[0082] The curing time of the glue can be the time required for the glue to change from a liquid state to a solid state after dispensing.

[0083] The nozzle maintenance cycle can be the time interval when the nozzle needs to be cleaned or replaced.

[0084] The cleaning type can be the method and type of cleaning agent used to clean the nozzle.

[0085] Specifically, according to the component ratio of the glue solution, using the curing characteristics of the glue solution, calculate the curing time of the glue solution. Analyze the influence of the glue solution curing time on the glue nozzle. Based on the analysis of the glue solution curing time and its influence on the glue nozzle, determine the maintenance cycle of the glue nozzle. Analyze the component ratio to determine the chemical composition of the glue solution. According to the component ratio and the chemical composition of the glue solution, determine the appropriate cleaning type. Based on the maintenance cycle and the cleaning type, set the parameters for pulsed flushing. The dual-component metering system performs pulsed flushing on the glue nozzle according to the set parameters.

[0086] Through this solution, by analyzing the component ratio of the glue solution, predicting the curing time of the glue solution helps to ensure that during the dispensing process, the glue solution cures within an appropriate time, avoiding dispensing problems caused by too long or too short curing time. According to the curing time of the glue solution, determine the maintenance cycle of the glue nozzle to ensure the cleaning status and dispensing effect of the glue nozzle. According to the component ratio of the glue solution, determine the cleaning type. Different glue solutions require different cleaning agents or cleaning methods to ensure the cleaning effect of the glue nozzle. Based on the maintenance cycle and the cleaning type of the glue nozzle, control the dual-component metering system to perform pulsed flushing on the glue nozzle, effectively removing the residual glue solution inside the glue nozzle and maintaining the cleaning status of the glue nozzle.

[0087] In some embodiments, according to the dispensing information, determine the infrared spectrum data and flow rate data of the glue solution; analyze the infrared spectrum data to determine the intensity ratio of the characteristic absorption peaks of the components; according to the flow rate data, calculate the amount of glue solution passing through per unit time; according to the intensity ratio of the characteristic absorption peaks and the amount of glue solution passing through, determine the current dispensing status.

[0088] The infrared spectrum data of the glue solution can be the measurement results of the glue solution on an infrared spectrometer.

[0089] The flow rate data can be the flow velocity of the glue solution during the dispensing process.

[0090] The intensity ratio of the characteristic absorption peaks can be the absorption peak intensity in the infrared spectrum data of the glue solution.

[0091] The unit time can be the time unit used to calculate the amount of glue solution passing through, which can be in seconds (s).

[0092] The amount of glue solution passing through can be the amount of glue solution passing through the glue nozzle per unit time.

[0093] The intensity of the characteristic absorption peak can be the ratio between the characteristic absorption peak intensities of different components in the glue solution.

[0094] Specifically, an infrared spectrometer is used to monitor the glue solution during dispensing in real time to obtain the infrared spectrum data of the glue solution. The flow rate data of the glue solution is obtained through a flow rate sensor. Based on the infrared spectrum data, the characteristic absorption peaks of the components are identified. A spectral analysis device is used to calculate the intensity of each characteristic absorption peak. According to the intensity of the characteristic absorption peaks of different components, the intensity ratio of the characteristic absorption peaks is calculated. A geometric formula is used to calculate the back suction cross-sectional area, and based on the flow rate data and the back suction cross-sectional area, the amount of glue solution passing through per unit time is calculated. The intensity ratio of the characteristic absorption peaks is analyzed to determine whether the mixing ratio of the components in the glue solution meets the expectations. The amount of glue solution passing through is analyzed to determine whether the flow rate and volume of the glue solution meet the requirements of the dispensing task. Based on the analysis results of the intensity ratio of the characteristic absorption peaks and the amount of glue solution passing through, the current dispensing state is determined.

[0095] Through this solution, by determining the infrared spectrum data and flow rate data of the glue solution, it helps to monitor the composition and flow of the glue solution, providing basic data for the analysis of the dispensing state. Analyzing the infrared spectrum data to determine the intensity ratio of the characteristic absorption peaks of the components helps to judge whether the mixing ratio of the glue solution is accurate and whether there are problems such as contamination or incomplete reaction. Based on the flow rate data, calculating the amount of glue solution passing through the dispensing nozzle per unit time helps to monitor and control the supply of the glue solution during the dispensing process, ensuring the consistency and stability of the dispensing. By analyzing the infrared spectrum data to determine the intensity ratio of the characteristic absorption peaks of the components and judging whether the mixing ratio of the glue solution is accurate, it helps to ensure that the composition of the glue solution meets the requirements of the dispensing task to be performed. Combining the intensity ratio of the characteristic absorption peaks and the amount of glue solution passing through per unit time to determine the current dispensing state helps to timely discover and solve problems during the dispensing process, ensuring the dispensing effect.

[0096] In some embodiments, the pressure fluctuation data of the dual-liquid metering system is obtained; the pressure fluctuation data is analyzed to determine the influence of pressure on the readings of the flow rate sensor; based on the influence on the readings, the abnormal fluctuation segments are filtered; an integral operation is performed on the filtered flow rate data to obtain the amount of glue solution passing through per unit time.

[0097] The pressure fluctuation data can be the numerical values of the pressure changes during the operation of the dual-liquid metering system.

[0098] The readings of the flow rate sensor can be the numerical values of the flow rate of the glue solution during dispensing.

[0099] The influence on the readings can be the influence of the pressure fluctuation data on the readings of the flow rate sensor.

[0100] The abnormal fluctuation segments can be the abnormal fluctuation parts that appear in the pressure fluctuation data.

[0101] Specifically, a pressure sensor is used to monitor the pressure fluctuation data of the two-component metering system in real time. Statistical analysis is performed on the obtained pressure fluctuation data to determine the influence of the pressure fluctuation data on the readings of the flow rate sensor. According to the reading influence, a digital filter is used to process the pressure fluctuation data to filter out abnormal fluctuation segments. For the filtered flow rate data, integral operation is automatically performed through programming to obtain the amount of adhesive passing through per unit time.

[0102] Through this solution, the pressure fluctuation data of the two-component metering system is monitored in real time by a pressure sensor, which helps to identify the flow state and operation condition of the adhesive. Analyzing the pressure fluctuation data helps to identify and diagnose problems affecting the dispensing accuracy, such as pipeline blockage, equipment wear, etc. Determining the influence of pressure on the readings of the flow rate sensor helps to correct the flow rate data and improve the accuracy of flow rate measurement. By filtering out abnormal fluctuation segments, noise and interference are removed, improving the quality and stability. Performing integral operation on the filtered flow rate data to obtain the amount of adhesive passing through per unit time helps to control the dispensing amount.

[0103] In some embodiments, real-time temperature data after the adhesive is mixed is obtained; according to the Arrhenius equation, the apparent viscosity of the adhesive at the real-time temperature data is calculated; according to the basic information, the inner wall roughness of the dispensing nozzle is determined; based on the apparent viscosity of the adhesive and the inner wall roughness of the dispensing nozzle, a retraction resistance model is established; based on the retraction resistance model, according to the fluidity of the colloid, the retraction speed of the adhesive is determined.

[0104] The Arrhenius equation can be a mathematical expression describing the relationship between the reaction rate constant of a chemical reaction and temperature.

[0105] The real-time temperature data can be the temperature data of the adhesive at the current time point.

[0106] The apparent viscosity of the adhesive can be the flow resistance of the adhesive at the real-time temperature data.

[0107] The inner wall roughness of the dispensing nozzle can be the degree of unevenness of the inner wall surface of the dispensing nozzle.

[0108] The retraction resistance model can be a mathematical model describing the resistance suffered by the adhesive during the retraction process.

[0109] Specifically, a temperature sensor is used to monitor the real-time temperature data after the adhesive is mixed. The Arrhenius equation is used to calculate the apparent viscosity of the adhesive at the real-time temperature data. According to the basic information, a surface roughness measuring instrument is used to directly measure the inner wall roughness of the dispensing nozzle. A suitable hydrodynamic model is selected to describe the flow of the adhesive in the dispensing nozzle. The inner wall roughness of the dispensing nozzle is incorporated into the hydrodynamic model. According to the hydrodynamic model and the inner wall roughness of the dispensing nozzle, a retraction resistance model is established. The retraction resistance model is used to predict the flow resistance of the adhesive inside the dispensing nozzle. According to the flow resistance and the fluidity of the colloid, the retraction speed of the adhesive is calculated.

[0110] Through this solution, real-time monitoring of the temperature data after the glue liquid is mixed helps to ensure that the glue liquid works at the optimal temperature, thus guaranteeing the fluidity and curing speed of the colloid. At the same time, it helps to prevent changes in the performance of the glue liquid caused by temperature fluctuations, which may affect the dispensing effect. Calculating the apparent viscosity of the glue liquid helps to identify the fluidity of the glue liquid at the current temperature, and also helps to control the dispensing volume and speed, improving the dispensing accuracy and the usage efficiency of the glue liquid. Determining the inner wall roughness of the dispensing nozzle helps to predict the flow resistance of the glue liquid inside the nozzle, thereby optimizing the dispensing parameters, reducing glue liquid waste, and helping to ensure that the glue liquid smoothly passes through the nozzle, avoiding wire drawing and dripping phenomena. Establishing a retraction resistance model helps to predict the flow resistance of the glue liquid during the retraction process, thus controlling the retraction effect. At the same time, it helps to prevent the glue liquid from curing inside the nozzle, prolonging the service life of the nozzle. Determining the retraction speed of the glue liquid helps to control the retraction effect, ensuring that the glue liquid completely retracts into the nozzle, avoiding glue liquid dripping or curing, reducing glue liquid waste, and improving production efficiency.

[0111] In some embodiments, according to the maintenance cycle, the cumulative pollution amount is calculated; according to the cumulative pollution amount and the cleaning type, the pulse pressure and the flushing duration are determined; according to the pulse pressure and the flushing duration, the dual-liquid metering system is controlled to perform pulse flushing on the dispensing nozzle.

[0112] The cumulative pollution amount can be the total amount of pollutants accumulated inside the dispensing nozzle due to factors such as the residue of the glue liquid, reaction products, or external pollution during the dispensing process.

[0113] The pulse pressure can be the pressure exerted by the flushing liquid on the dispensing nozzle during the pulse flushing process.

[0114] The flushing duration can be the total time during which the flushing liquid flushes the dispensing nozzle during the pulse flushing process.

[0115] Specifically, collect the usage data of the dispensing nozzle during the maintenance cycle. According to the usage data, estimate the pollutant generation rate for each dispensing task. According to the usage data and the pollutant generation rate during the maintenance cycle, calculate the cumulative pollution amount. Evaluate the pollution type and quantity based on the cumulative pollution amount to determine the severity of pollution. According to the severity of pollution, select the appropriate cleaning type. Set the pulse pressure according to the cleaning type, the material and structure of the dispensing nozzle, and the severity of pollution. Determine the flushing duration according to the severity of pollution, the pulse pressure, and the cleaning type. According to the pulse pressure and the flushing duration, set the corresponding parameters in the control device of the dual-liquid metering system. According to the set parameters, control the dual-liquid metering system to perform pulse flushing on the dispensing nozzle.

[0116] Through this solution, by calculating the cumulative pollution amount, the accumulation of pollutants inside the dispensing nozzle is identified, thereby determining the necessity and frequency of cleaning, which helps prevent the accumulation of pollutants to a level sufficient to affect the dispensing quality or cause equipment failure. According to the severity of pollution and the selected cleaning type, the appropriate pulse pressure and flushing duration are determined to ensure the maximization of the cleaning effect while avoiding equipment damage caused by over-cleaning.

Claims

1. A dual-liquid dispensing system for automated equipment, comprising a dual-liquid metering system, a dual-liquid dispensing valve, and a glue nozzle, for implementing a dual-liquid dispensing method for automated equipment, characterized in that: The dual-glue path automated equipment dispensing system further includes a server, and the dual-glue path automated equipment dispensing method is applied to the server, including: Obtaining a task to be dispensed; analyzing the task to be dispensed and determining a component ratio; According to the component ratio, controlling the dual-liquid metering system to deliver glue to the dual-liquid dispensing valve; Obtaining glue dispensing information of the dual-liquid dispensing valve; analyzing the glue dispensing information to determine the current glue dispensing state; According to the dispensing state, determining whether the components are evenly mixed; if they are evenly mixed, starting the dispensing operation; After the unit dispensing operation is completed, the dual-liquid dispensing valve is controlled to perform colloid suction so that the glue liquid is retracted into the inside of the glue nozzle.

2. The system according to claim 1, characterized in that After the unit dispensing operation is completed, controlling the dual-liquid dispensing valve to perform colloid back suction includes: Determining the colloid fluidity according to the component ratio; Analyze the glue dispensing task to be performed and determine the glue dispensing amount per unit time; Obtaining basic information of the nozzle, and determining the nozzle caliber according to the basic information; Determine the back-sucking parameter according to the glue output per unit time, the nozzle diameter and the colloid fluidity; After the unit dispensing operation is completed, the dual-liquid dispensing valve is controlled to perform colloid back-sucking according to the back-sucking parameters.

3. The system according to claim 2, characterized in that The step of analyzing the glue dispensing task to be performed and determining the glue dispensing amount per unit time includes: Analyze the dispensing task to be performed and determine the dispensing saturation amount; Obtaining the current ambient temperature; determining the environmental impact of the environment on the glue output according to the current ambient temperature and the component ratio; The glue output per unit time is determined according to the environmental impact and the glue dispensing saturation amount.

4. The system according to claim 3, characterized in that Determining the environmental impact of the environment on the glue output according to the current ambient temperature and the component ratio includes: Based on the component ratio and according to the current ambient temperature, determining a change in the viscosity of the glue; Determining the fluidity deviation of the glue liquid according to the change in the viscosity of the glue liquid; The environmental impact of the environment on the glue output is determined based on the glue fluidity deviation.

5. The system according to claim 2, characterized in that The step of determining the back-sucking parameter according to the glue output per unit time, the nozzle diameter and the colloid fluidity includes: Determining the glue liquid retraction speed according to the colloid fluidity; Determine the suction cross-sectional area according to the nozzle diameter; Calculating the resuscitation time according to the glue output per unit time and the glue liquid retraction speed; A back-suction negative pressure value is determined according to the back-suction cross-sectional area and the back-suction time, and the back-suction negative pressure value is used as a back-suction parameter.

6. The system according to claim 1, characterized in that After controlling the dual-liquid dispensing valve to perform colloid sucking back, the method further includes: Determine the curing time of the glue according to the component ratio; Determine the maintenance period of the glue nozzle according to the curing time of the glue liquid; Determine the cleaning type according to the component ratio; Based on the nozzle maintenance cycle and the cleaning type, the dual-liquid metering system is controlled to perform pulse flushing on the nozzle.

7. The system according to claim 1, characterized in that The analyzing the glue discharging information to determine the current glue discharging state includes: Determine the infrared spectrum data and flow rate data of the glue liquid according to the glue discharging information; Analyzing the infrared spectrum data to determine the characteristic absorption peak intensity ratio of the components; According to the flow rate data, the amount of glue passing through per unit time is calculated; The current glue discharging state is determined according to the characteristic absorption peak intensity ratio and the glue liquid throughput.

8. The system according to claim 7, characterized in that The dual-glue path automated equipment dispensing system further includes a flow rate sensor, and the calculation of the amount of glue liquid passing through per unit time based on the flow rate data includes: Obtaining pressure fluctuation data of the dual-liquid metering system; analyzing the pressure fluctuation data to determine the effect of pressure on the reading of the flow rate sensor; filtering abnormal fluctuation segments according to the reading influence; The filtered flow rate data is integrated to obtain the amount of glue passing through per unit time.

9. The system according to claim 5, characterized in that Determining the glue liquid retraction speed according to the colloid fluidity includes: Get the real-time temperature data after the glue is mixed; Calculating the apparent viscosity of the glue under the real-time temperature data according to the Arrhenius equation; Determine the roughness of the inner wall of the nozzle according to the basic information; A retraction resistance model is established based on the apparent viscosity of the glue liquid and the roughness of the inner wall of the glue nozzle; Based on the retraction resistance model and according to the colloid fluidity, the retraction speed of the glue liquid is determined.

10. The system according to claim 6, characterized in that The controlling the dual-liquid metering system to pulse-flush the nozzle based on the nozzle maintenance cycle and the cleaning type includes: Calculating the accumulated pollution amount according to the maintenance cycle; Determining pulse pressure and flushing duration according to the accumulated pollution amount and the cleaning type; According to the pulse pressure and the flushing time, the dual-liquid metering system is controlled to perform pulse flushing on the nozzle.

Images