Intelligent glue rolling device and glue rolling method for hot melt glue

Abstract

The invention discloses an intelligent glue rolling device and method for hot melt glue, and the method comprises the steps: monitoring the real-time temperature of a glue roller, and determining the optimal heating power of a heater for the glue roller under a preset constraint condition through a model prediction MPC control method; the switch PID controller is used for controlling the on-off state of the heater; performing pressure detection and visual detection on the rubber roller, and controlling and adjusting the pressure and the rotating speed of the rubber roller in the rubber rolling process according to a pressure detection result and a visual detection result so as to control the rubber rolling coating thickness, the coating uniformity and the coating position of the rubber roller; and spraying a cleaning solvent to the rubber roller, monitoring the residual amount of glue on the rubber roller, and sucking glue on the rubber roller until the preset residual amount of glue is reached. According to the technical scheme, the glue rolling quality and stability of products are improved, the cleaning efficiency is improved, risks and labor intensity caused by manual operation are reduced, higher production efficiency is achieved, and the failure rate is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of surface coating devices, and in particular to an intelligent roller glue device for hot melt adhesive and an intelligent roller glue device for hot melt adhesive. Background Art

[0002] In the traditional hot melt glue roller gluing process, usually only a simple roller gluing treatment is performed on the surface. The roller gluing equipment used is relatively basic and cannot realize intelligent temperature control and precise roller gluing operations, and the glue cleaning is difficult. Summary of the invention

[0003] In response to the above problems, the present invention provides an intelligent roller glue device and rolling method for hot melt adhesive, which improves the temperature control accuracy by introducing a temperature control module, ensures the stability of the hot melt adhesive during the rolling process, and avoids the influence of overheating or overcooling of the glue on the gluing effect. The rolling operation is precisely controlled by an automatic rolling glue system to avoid uneven or excessive glue coating, thereby improving the roller glue quality and stability of the product. The automatic glue cleaning module simplifies the glue cleaning process, improves cleaning efficiency, reduces the risks and labor intensity brought by manual operation, achieves higher production efficiency, and reduces the failure rate.

[0004] To achieve the above-mentioned purpose, the present invention provides an intelligent hot melt adhesive roller device, comprising: a rubber roller, a temperature control module, an automatic rubber roller module, an automatic glue cleaning module and a system electronic control module; The temperature control module is used to monitor the real-time temperature of the rubber roller, and according to the difference between the real-time temperature and the target temperature, determine the optimal heating power of the heater for the rubber roller under preset constraints through the model prediction MPC controller, and at the same time, according to the high or low state of the real-time temperature relative to the preset tolerance temperature range, use the switch PID controller to control the switch state of the heater; The automatic roller glue module is used to control the pressure and rotation speed of the rubber roller according to the pressure of the rubber roller and the visual detection result; The automatic glue cleaning module is used to spray a glue cleaning solvent onto the rubber roller, and perform a glue suction operation on the rubber roller according to the detected glue residue on the rubber roller; The system electric control module is used to provide system control and electrical control to the rubber roller, the temperature control module, the automatic roller glue module and the automatic glue cleaning module.

[0005] In the above technical solution, preferably, the temperature control module uses a thermocouple sensor to monitor the real-time temperature of the rubber roller in real time, and sets the target temperature through a human-computer interaction interface.

[0006] In the above technical solution, preferably, the rubber roller comprises a rubber pressing roller and a rubber coating roller, and the rubber pressing roller and the rubber coating roller cooperate with each other to control the thickness of the rubber layer; The automatic roller glue module detects the coating uniformity of the glue through an optical detection component and a sensor, detects and adjusts the pressure of the rubber roller through a pressure control component according to the coating uniformity of the glue, and controls the rotation speed of the rubber roller through a servo motor.

[0007] In the above technical solution, preferably, the automatic glue cleaning module includes a solvent spraying component, a residual glue monitoring component and a vacuum glue suction component; The solvent spraying assembly is used to spray the cleaning solvent onto the rubber roller according to a preset spraying time and spraying pressure; The residual glue monitoring component is used to monitor the residual glue amount on the rubber roller in real time through a sensor; The vacuum glue suction component is used to absorb the residual glue on the rubber roller until a preset amount of residual glue is reached.

[0008] The present invention further provides an intelligent roller gluing method for hot melt adhesive, which is applied to the intelligent roller gluing device for hot melt adhesive disclosed in any one of the above technical solutions, comprising: Monitor the real-time temperature of the rubber roller, and determine the optimal heating power of the heater for the rubber roller under preset constraints through a model prediction MPC control method according to the difference between the real-time temperature and the target temperature; According to the high or low state of the real-time temperature relative to the preset tolerance temperature range, the switch state of the heater is controlled by a switch PID controller; Performing pressure detection and visual detection on the rubber roller, and controlling and adjusting the pressure and speed of the rubber roller during the rubber rolling process according to the pressure detection results and the visual detection results, so as to control the thickness, coating uniformity and coating position of the rubber roller; A cleaning solvent is sprayed on the rubber roller, and the amount of glue residue on the rubber roller is monitored, and a glue suction operation is performed on the rubber roller until a preset amount of glue residue is reached.

[0009] In the above technical solution, preferably, according to the difference between the real-time temperature and the target temperature, the optimal heating power of the heater for the rubber roller is determined under preset constraints by a model prediction MPC control method, and the specific process includes: The objective function of the model prediction MPC control method is the sum of the squares of the difference between the temperature at the prediction moment and the target temperature: ; in, is the temperature at the predicted time k, T target is the target temperature, N is the prediction step length; Setting constraints to heating power with preset maximum and minimum limits and a temperature change rate within a preset range; Construct a quadratic programming optimization problem and solve it to obtain the optimal heating power P(t). , so that the temperature of the rubber roller is as close to the target temperature as possible.

[0010] In the above technical solution, preferably, according to the high or low state of the real-time temperature relative to the preset tolerance temperature range, the switch state of the heater is controlled by a switch PID controller, and the specific process includes: According to the ON / OFF switch PID control method, set the tolerance temperature range [ T min , T max ],in, T min = T target -Δ T , T max = T target +Δ T , Δ T is the temperature fluctuation value; When the real-time temperature is lower than the lower limit of the tolerance temperature T min When the heater is turned on, When the real-time temperature is higher than the upper limit of the tolerance temperature T max When the heater is turned off, the control is performed.

[0011] In the above technical solution, preferably, the rubber roller is subjected to pressure detection and visual detection, and the pressure and speed of the rubber roller during the rubber rolling process are controlled and adjusted according to the pressure detection results and the visual detection results, so as to control the rubber coating thickness, coating uniformity and coating position of the rubber roller. The specific process includes: The pressure of the rubber roller is detected by a pressure control component, and the pressure of the rubber roller is adjusted in real time according to the viscosity, coating thickness and target coating amount of the applied glue; The uniformity of the glue applied by the rubber roller is monitored by an optical detection component and a sensor, and the pressure and / or rotation speed of the rubber roller is adjusted in real time according to the coating state of the glue.

[0012] In the above technical solution, preferably, a cleaning solvent is sprayed on the rubber roller, and the amount of glue residue on the rubber roller is monitored, and a glue suction operation is performed on the rubber roller until a preset amount of glue residue is reached. The specific process includes: According to a preset spraying time and a spraying pressure, during the rotation of the rubber roller, a cleaning solvent is sprayed onto the rubber roller through a solvent spraying assembly, so that the cleaning solvent covers the roller surface of the rubber roller; After the cleaning solvent is sprayed, the vacuum glue suction component is controlled to absorb the residual glue on the rubber roller; The residual glue amount on the rubber roller is monitored in real time by a sensor, and the vacuum glue suction component is controlled to continuously perform glue suction operation on the rubber roller according to the residual glue amount until the residual glue amount on the rubber roller is lower than a preset value.

[0013] In the above technical solution, preferably, the intelligent roller glue method of hot melt adhesive further includes: Setting the target temperature of the rubber roller and the tolerance temperature range through the human-computer interaction interface, and displaying the real-time temperature data of the rubber roller through the human-computer interaction interface; The spraying time and the spraying pressure of the solvent spraying assembly are set through the human-computer interaction interface.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: by introducing a temperature control module, the temperature control accuracy is improved, the stability of the hot melt adhesive during the rolling process is ensured, the influence of overheating or overcooling of the glue on the gluing effect is avoided, the rolling operation is precisely controlled by the automatic rolling system, uneven glue coating or excessive coating is avoided, and the rolling quality and stability of the product are improved; the automatic glue cleaning module is used to simplify the glue cleaning process, improve the cleaning efficiency, reduce the risks and labor intensity brought by manual operation, achieve higher production efficiency, and reduce the failure rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A front view of the overall structure of an intelligent roller glue device for hot melt glue disclosed in an embodiment of the present invention; Figure 2 A side view of the overall structure of an intelligent roller glue device for hot melt glue disclosed in an embodiment of the present invention.

[0016] In the figure, the corresponding relationship between each component and the reference numeral is as follows: 1. System electronic control module, 2. Temperature control module, 3. Automatic glue cleaning module, 4. Rubber roller. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] The present invention is further described in detail below in conjunction with the accompanying drawings: like Figure 1 and Figure 2 As shown, a smart hot melt adhesive roller device according to the present invention includes: a rubber roller 4, a temperature control module 2, an automatic rubber roller module, an automatic glue cleaning module 3 and a system electronic control module 1; The temperature control module 2 is used to monitor the real-time temperature of the rubber roller 4, and according to the difference between the real-time temperature and the target temperature, the model predicts the MPC controller to determine the optimal heating power of the heater for the rubber roller 4 under the preset constraints. At the same time, according to the high and low state of the real-time temperature relative to the preset tolerance temperature range, the switch PID controller is used to control the switch state of the heater; The automatic roller glue module is used to control the pressure and speed of the rubber roller 4 according to the pressure of the rubber roller 4 and the visual detection result; The automatic glue cleaning module 3 is used to spray the glue cleaning solvent onto the rubber roller 4, and perform a glue suction operation on the rubber roller 4 according to the detected glue residue on the rubber roller 4; The system electric control module 1 is used to provide system control and electrical control to the rubber roller 4 , the temperature control module 2 , the automatic roller glue module and the automatic glue cleaning module 3 .

[0019] In this embodiment, the temperature control accuracy is improved by introducing the temperature control module 2, thereby ensuring the stability of the hot melt adhesive during the rolling process, avoiding the influence of overheating or overcooling of the glue on the gluing effect, and the automatic rolling system is used to accurately control the rolling operation, thereby avoiding uneven or excessive glue coating, thereby improving the rolling quality and stability of the product, and simplifying the glue cleaning process through the automatic glue cleaning module 3, thereby improving the cleaning efficiency, reducing the risks and labor intensity brought by manual operation, achieving higher production efficiency, and reducing the failure rate.

[0020] Specifically, the goal of the temperature control module 2 is to improve the temperature control accuracy, ensure the stability of the hot melt adhesive during roller coating, and avoid the overheating or overcooling of the glue affecting the coating effect.

[0021] The model predictive controller (MPC) and ON / OFF switch PID control algorithm are added to the roller glue equipment to realize the design of the temperature control system. The temperature control module 2 is equipped with a thermocouple sensor to monitor the real-time temperature of the rubber roller 4 in real time, and the target temperature is set through the human-computer interaction interface.

[0022] In the above embodiment, preferably, the rubber roller 4 includes a rubber pressing roller and a rubber coating roller, and the rubber pressing roller and the rubber coating roller cooperate with each other to control the thickness of the rubber layer; The automatic roller glue module detects the coating uniformity of the glue through the optical detection component and the sensor, detects and adjusts the pressure of the glue roller 4 through the pressure control component according to the coating uniformity of the glue, and controls the rotation speed of the glue roller 4 through the servo motor.

[0023] In the above embodiment, preferably, the automatic glue cleaning module 3 includes a solvent spraying component, a residual glue monitoring component and a vacuum glue suction component; The solvent spraying assembly is used to spray the cleaning solvent onto the rubber roller 4 according to the preset spraying time and spraying pressure; The residual glue monitoring component is used to monitor the residual glue amount on the rubber roller 4 in real time through a sensor; The vacuum glue suction component is used to absorb the residual glue on the glue roller 4 until a preset glue residue amount is reached.

[0024] The present invention further provides an intelligent roller gluing method for hot melt adhesive, which is applied to the intelligent roller gluing device for hot melt adhesive disclosed in any one of the above embodiments, comprising: Monitor the real-time temperature of the rubber roller 4, and determine the optimal heating power of the heater for the rubber roller 4 under preset constraints through a model prediction MPC control method according to the difference between the real-time temperature and the target temperature; According to the high and low state of the real-time temperature relative to the preset tolerance temperature range, the switch PID controller is used to control the switch state of the heater; Perform pressure detection and visual detection on the rubber roller 4, and control and adjust the pressure and speed of the rubber roller 4 during the rubber coating process according to the pressure detection results and the visual detection results, so as to control the coating thickness, coating uniformity and coating position of the rubber roller 4; A cleaning solvent is sprayed onto the rubber roller 4, and the amount of glue residue on the rubber roller 4 is monitored, and a glue suction operation is performed on the rubber roller 4 until a preset amount of glue residue is reached.

[0025] In the above embodiment, preferably, according to the difference between the real-time temperature and the target temperature, the optimal heating power of the heater for the rubber roller 4 is determined under preset constraints by the model prediction MPC control method, and the specific process includes: The goal of the MPC controller is to adjust the control input by minimizing the temperature deviation over a period of time in the future. The objective function is generally the sum of the squares of the difference between the temperature target value and the actual temperature. Therefore, the objective function of the model prediction MPC control method is the sum of the squares of the difference between the temperature at the prediction moment and the target temperature. The specific formula is as follows: ; in, is the temperature at the predicted time k, T target is the target temperature, and N is the prediction step size, for example, the temperature change in the next 10 seconds; In practical applications, the control system has certain physical constraints, such as setting constraints as heating power with preset maximum and minimum limits and temperature change rate within a preset range. The MPC controller will add these constraints to the optimization problem; The MPC controller needs to solve an optimization problem at every moment. By predicting the future temperature and adjusting the heating power P(t), the temperature is as close to the expected value as possible. This optimization problem can be solved by constructing a quadratic programming optimization problem. , The optimal heating power P(t) is obtained by solving the above optimization problem, so that the temperature of the rubber roller 4 is as close to the target temperature as possible.

[0026] Among them, MPC is an advanced control method that predicts future temperature changes by using a dynamic model of the system and performs optimal control based on the predicted results.

[0027] First, a mathematical model needs to be established based on the actual hot melt adhesive heating process. This model describes the relationship between temperature change and heating power. The following basic physical model is used to represent the heating process: Heat transfer model: The heating system heats the surface of the rubber roller 4 through an electric heater, and the change of temperature over time is determined by factors such as heat conduction, heat convection and heat radiation.

[0028] ; in, T ( t )for t The temperature of the moment, P ( t ) is the heating power, U For sparse heat conduction, T env is the ambient temperature, C For heat capacity.

[0029] The heat transfer model describes the temperature change process with the heating power input. Through this model, the temperature change at a certain moment in the future can be estimated.

[0030] In each control cycle (for example, every second), MPC performs the following steps: (1) Collecting temperature data: The temperature control system obtains the current temperature of the rubber roller 4 in real time.

[0031] (2) Predicting future temperature: Use the system model to predict future temperature changes based on current temperature data and control inputs.

[0032] (3) Optimization control: By optimizing the objective function, the heating power input is adjusted so that the future temperature is as close to the set target temperature as possible.

[0033] (4) Implement control: adjust the output power of the heater according to the optimization results.

[0034] Advantages of MPC include: (1) Advance prediction: By predicting future temperatures, MPC can adjust control inputs in advance to avoid excessive temperature fluctuations.

[0035] (2) Multivariable control: MPC can process multiple temperature sensors and control inputs simultaneously and is suitable for complex multivariable systems.

[0036] (3) Real-time update: The control strategy will be dynamically adjusted according to new real-time data so that the system is always in the best working state.

[0037] In the above embodiment, preferably, according to the high or low state of the real-time temperature relative to the preset tolerance temperature range, the switch state of the heater is controlled by a switch PID controller, and the specific process includes: According to the ON / OFF switch PID control method, set the tolerance temperature range [ T min , T max ],in, T min = T target -Δ T , T max = T target +Δ T , Δ T is the temperature fluctuation value; When the real-time temperature is lower than the lower limit of the tolerance temperature T min When , the heater is turned on; When the real-time temperature is higher than the upper limit of the tolerance temperature T max When the control turns off the heater.

[0038] Specifically, the ON / OFF control algorithm is the simplest control method and is suitable for application scenarios where temperature requirements are not high. Its basic idea is to turn on the heater when the temperature is lower than the set target value, and turn it off otherwise. In order to achieve ON / OFF control, a tolerance temperature range is set. Assume that the target temperature is T target , then we can define a tolerance range [ T min , T max ].

[0039] ON / OFF control is usually implemented as a simple logic judgment: If the real-time temperature T current < T min, then turn on the heater; If the real-time temperature T current > T max , then turn off the heater.

[0040] The advantages of this control method are simple structure, small amount of calculation, and it is suitable for scenarios with low requirements on temperature fluctuations.

[0041] In order to reduce temperature fluctuations, a dead zone or hysteresis zone is introduced, that is, when the temperature is close to the target temperature, the system will delay the switching operation to reduce the fluctuations caused by frequent switching. The dead zone can be set to a small temperature range, and the switching operation will only be performed when the temperature exceeds this range.

[0042] In the actual system, MPC and ON / OFF control algorithms are integrated in a temperature control module 2 to combine their advantages. The MPC control part is used for precise temperature control and is used in scenarios where precise temperature adjustment is required.

[0043] The ON / OFF control part is suitable for scenarios that are insensitive to temperature fluctuations and require high response speed.

[0044] In the system, MPC control and ON / OFF control can be switched or used in parallel according to specific needs. Through the combination of multiple control strategies, a more stable and efficient temperature control effect can be achieved.

[0045] In the above embodiment, preferably, the rubber roller 4 is subjected to pressure detection and visual detection, and the pressure and speed of the rubber roller 4 during the rubber rolling process are controlled and adjusted according to the pressure detection results and the visual detection results, so as to control the rubber coating thickness, coating uniformity and coating position of the rubber roller 4. The specific process includes: The pressure of the rubber roller 4 is detected by the pressure control component, and the pressure of the rubber roller 4 is adjusted in real time according to the viscosity, coating thickness and target coating amount of the applied glue; The uniformity of the glue applied by the rubber roller 4 is monitored by optical detection components and sensors, and the pressure and / or rotation speed of the rubber roller 4 is adjusted in real time according to the application status of the glue.

[0046] In the implementation process, the servo motor is used to drive the rubber roller 4, which can provide more accurate speed control and realize refined adjustment of the glue coating amount. The servo motor has higher control accuracy and response speed, and can automatically adjust the roller speed as needed. A pressure control component is added to the roller glue device to adjust the pressure of the rubber roller 4 in real time according to the viscosity of the glue and the target coating amount to ensure uniform glue coating.

[0047] By configuring a double-roller system, one roller is a glue pressing roller and the other roller is a glue coating roller. The cooperation of the two rollers can effectively control the thickness of the glue layer and avoid excessive or uneven coating of glue.

[0048] In the above embodiment, preferably, a cleaning solvent is sprayed on the rubber roller 4, and the amount of glue residue on the rubber roller 4 is monitored, and the rubber roller 4 is subjected to a glue suction operation until a preset amount of glue residue is reached. The specific process includes: According to the preset spraying time and spraying pressure, during the rotation of the rubber roller 4, the cleaning solvent is sprayed onto the rubber roller 4 through the solvent spraying assembly, so that the cleaning solvent covers the roller surface of the rubber roller 4; After the cleaning solvent is sprayed, the vacuum glue suction component is controlled to absorb the residual glue on the glue roller 4; The residual glue amount on the rubber roller 4 is monitored in real time by a sensor, and the vacuum glue suction component is controlled to continuously perform glue suction operation on the rubber roller 4 according to the residual glue amount, until the residual glue amount on the rubber roller 4 is lower than a preset value.

[0049] The task of the automatic glue cleaning module 3 is to remove the glue on the rubber roller 4, which can be cleaned by high-pressure air and a specific solvent. According to the timing and sensor feedback, the opening and closing of the cleaning device are automatically controlled.

[0050] The working process of automatic glue cleaning module 3 is as follows: 1. Start-up cleaning: When the system is started, high-pressure air and solvent spraying are first started through timing control.

[0051] 2. Cleaning cycle: The cleaning operation can be controlled by a timer, and the cleaning time can be set (e.g. 30 seconds). When the time is up, stop spraying and switch to the next step.

[0052] 3. Stop cleaning: The sensor monitors the amount of glue residue to determine whether the cleaning standard has been met. If the sensor does not detect enough residue, the cleaning process can be terminated early.

[0053] In this embodiment, the task of the solvent spraying assembly is to spray the special cleaning agent evenly on the roller surface. To ensure the effect, it is necessary to control the amount and range of spraying, control the time and pressure of spraying, and ensure uniform coverage.

[0054] The workflow of the solvent spray assembly is: (1) Start spraying: When the roller starts to rotate, the control system automatically starts spraying to ensure that the cleaning agent covers the entire roller surface.

[0055] (2) Detergent dosage control: Set the spraying time and pressure to spray the right amount of detergent within a fixed time. The spraying amount is adjusted by a timer and pressure sensor.

[0056] (3) Stop spraying: After spraying is completed, the nozzle stops working and waits for the next cycle.

[0057] In this embodiment, the vacuum glue suction component is used to absorb glue residue and reduce the use of solvents, which needs to be coordinated according to the progress of the cleaning process. The working process of the vacuum glue suction component is: (1) Start the glue suction: After the cleaning agent is sprayed, immediately start the vacuum glue suction component to ensure that the glue residue can be quickly sucked up.

[0058] (2) Vacuuming time control: Control the vacuuming time according to the degree of cleaning. The time can be dynamically adjusted through sensor feedback.

[0059] In this embodiment, the core task of the residual glue monitoring component is to monitor the residual glue amount in real time through sensors and feed the data back to the control system for adjustment.

[0060] The working process of the residual glue monitoring component is as follows: (1) Real-time monitoring: The sensor continuously monitors the amount of glue residue on the roller and sends data to the PLC.

[0061] (2) Feedback adjustment: If the sensor finds that the glue residue is still high, the PLC will adjust the operation of the cleaning equipment (such as extending the cleaning time or increasing the amount of solvent).

[0062] In the above embodiment, preferably, the intelligent roller glue method of hot melt adhesive further includes: Setting the target temperature of the rubber roller 4 and the tolerance temperature range through the human-machine interaction interface, and displaying the real-time temperature data of the rubber roller 4 through the human-machine interaction interface; Set the spraying time and spraying pressure of the solvent spraying component through the human-computer interaction interface.

[0063] According to the intelligent roller glue method of hot melt adhesive disclosed in the above embodiment, during the implementation process, it is implemented through the following control process: (I) Initialization phase: The system is powered on, the PLC is initialized, and the time, pressure and spray volume required for the cleaning process are set.

[0064] (ii) Start the cleaning process: 1. Cleaning device start: The spraying of cleaning agent is controlled by timer and sensor.

[0065] 2. Spraying system start: Controls the spraying of cleaning agent according to the preset time.

[0066] 3. Start the vacuum system: After spraying the cleaner, start the vacuum device to ensure that the glue residue is sucked up.

[0067] 3. Real-time monitoring and feedback: 1. The intelligent monitoring system monitors the glue residue in real time.

[0068] 2. If there is a lot of residue, increase the cleaning time or spraying amount to ensure thorough cleaning.

[0069] 4. End of cleaning: 1. After cleaning is completed, all devices are turned off through feedback signals and enter standby mode.

[0070] In addition, data logging and remote monitoring are also possible, with the goal of improving the level of intelligent operation and facilitating equipment maintenance and management. The equipment records and stores key data (temperature, pressure, speed, glue coating amount, etc.) during operation, which is convenient for later analysis, diagnosis and quality traceability. By setting up a remote monitoring system through Wi-Fi or industrial Ethernet, technicians can remotely monitor the equipment operation status through computers or mobile phones at any time and intervene when abnormalities occur. When the equipment fails or the operating parameters exceed the set range, the system will automatically alarm and prompt the operator to take necessary measures to reduce equipment failures and downtime.

[0071] By introducing intelligent temperature control systems, precise roller glue operation technology and automated glue cleaning systems, the hot melt glue roller glue process can achieve higher production efficiency, lower manual intervention requirements, and ensure the stability of product quality. Through these technical improvements, the equipment can not only improve operating accuracy, but also reduce failure rates, optimize production processes, and improve the overall process level.

[0072] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An intelligent roller glue device for hot melt adhesive, characterized in that: include: Rubber roller, temperature control module, automatic roller glue module, automatic glue cleaning module and system electronic control module; The temperature control module is used to monitor the real-time temperature of the rubber roller, and according to the difference between the real-time temperature and the target temperature, determine the optimal heating power of the heater for the rubber roller under preset constraints through the model prediction MPC controller, and at the same time, according to the high or low state of the real-time temperature relative to the preset tolerance temperature range, use the switch PID controller to control the switch state of the heater; The automatic roller glue module is used to control the pressure and rotation speed of the rubber roller according to the pressure of the rubber roller and the visual detection result; The automatic glue cleaning module is used to spray a glue cleaning solvent onto the rubber roller, and perform a glue suction operation on the rubber roller according to the detected glue residue on the rubber roller; The system electric control module is used to provide system control and electrical control to the rubber roller, the temperature control module, the automatic roller glue module and the automatic glue cleaning module.

2. The intelligent roller glue device for hot melt adhesive according to claim 1, characterized in that: The temperature control module uses a thermocouple sensor to monitor the real-time temperature of the rubber roller in real time, and sets the target temperature through a human-computer interaction interface.

3. The intelligent roller glue device for hot melt adhesive according to claim 1, characterized in that: The rubber roller comprises a rubber pressing roller and a rubber coating roller, and the rubber pressing roller and the rubber coating roller cooperate with each other to control the thickness of the rubber layer; The automatic roller glue module detects the coating uniformity of the glue through an optical detection component and a sensor, detects and adjusts the pressure of the rubber roller through a pressure control component according to the coating uniformity of the glue, and controls the rotation speed of the rubber roller through a servo motor.

4. The intelligent roller glue device for hot melt adhesive according to claim 1, characterized in that: The automatic glue removal module includes a solvent spraying component, a residual glue monitoring component and a vacuum glue suction component; The solvent spraying assembly is used to spray the cleaning solvent onto the rubber roller according to a preset spraying time and spraying pressure; The residual glue monitoring component is used to monitor the residual glue amount on the rubber roller in real time through a sensor; The vacuum glue suction component is used to absorb the residual glue on the rubber roller until a preset amount of residual glue is reached.

5. A smart roller glue method for hot melt adhesive, characterized in that: The intelligent roller glue device for hot melt adhesive according to any one of claims 1 to 4 comprises: Monitor the real-time temperature of the rubber roller, and determine the optimal heating power of the heater for the rubber roller under preset constraints through a model prediction MPC control method according to the difference between the real-time temperature and the target temperature; According to the high or low state of the real-time temperature relative to the preset tolerance temperature range, the switch state of the heater is controlled by a switch PID controller; Performing pressure detection and visual detection on the rubber roller, and controlling and adjusting the pressure and speed of the rubber roller during the rubber rolling process according to the pressure detection results and the visual detection results, so as to control the thickness, coating uniformity and coating position of the rubber roller; A cleaning solvent is sprayed on the rubber roller, and the amount of glue residue on the rubber roller is monitored, and a glue suction operation is performed on the rubber roller until a preset amount of glue residue is reached.

6. The intelligent roller glue method of hot melt adhesive according to claim 5, characterized in that: According to the difference between the real-time temperature and the target temperature, the optimal heating power of the heater for the rubber roller is determined under preset constraints by using a model prediction MPC control method. The specific process includes: The objective function of the model prediction MPC control method is the sum of the squares of the difference between the temperature at the prediction moment and the target temperature: ； in, is the temperature at the predicted time k, T target is the target temperature, N is the prediction step length; Setting constraints to heating power with preset maximum and minimum limits and a temperature change rate within a preset range; Construct a quadratic programming optimization problem and solve it to obtain the optimal heating power P(t). , so that the temperature of the rubber roller reaches the target temperature.

7. The intelligent roller glue method of hot melt adhesive according to claim 5, characterized in that: The rubber roller is subjected to pressure detection and visual detection, and the pressure and speed of the rubber roller during the rubber rolling process are controlled and adjusted according to the pressure detection results and the visual detection results, so as to control the thickness, coating uniformity and coating position of the rubber roller. The specific process includes: According to the ON / OFF switch PID control method, set the tolerance temperature range [ T min , T max ],in, T min = T target -Δ T , T max = T target +Δ T , Δ T is the temperature fluctuation value; When the real-time temperature is lower than the lower limit of the tolerance temperature T min When the heater is turned on, When the real-time temperature is higher than the upper limit of the tolerance temperature T max When the heater is turned off, 8. The intelligent roller glue method of hot melt adhesive according to claim 5, characterized in that: The rubber roller is subjected to pressure detection and visual detection, and the pressure and speed of the rubber roller during the rubber rolling process are controlled and adjusted according to the pressure detection results and the visual detection results, so as to control the thickness, coating uniformity and coating position of the rubber roller. The specific process includes: The pressure of the rubber roller is detected by a pressure control component, and the pressure of the rubber roller is adjusted in real time according to the viscosity, coating thickness and target coating amount of the applied glue; The uniformity of the glue applied by the rubber roller is monitored by an optical detection component and a sensor, and the pressure and / or rotation speed of the rubber roller is adjusted in real time according to the coating state of the glue.

9. The intelligent roller glue method of hot melt adhesive according to claim 5, characterized in that: Spraying a cleaning solvent onto the rubber roller, monitoring the amount of glue residue on the rubber roller, and performing a glue suction operation on the rubber roller until a preset amount of glue residue is reached. The specific process includes: According to a preset spraying time and a spraying pressure, during the rotation of the rubber roller, a cleaning solvent is sprayed onto the rubber roller through a solvent spraying assembly, so that the cleaning solvent covers the roller surface of the rubber roller; After the cleaning solvent is sprayed, the vacuum glue suction component is controlled to absorb the residual glue on the rubber roller; The residual glue amount on the rubber roller is monitored in real time by a sensor, and the vacuum glue suction component is controlled to continuously perform glue suction operation on the rubber roller according to the residual glue amount until the residual glue amount on the rubber roller is lower than a preset value.

10. The intelligent roller glue method of hot melt adhesive according to claim 9, characterized in that: Also includes: Setting the target temperature of the rubber roller and the tolerance temperature range through the human-computer interaction interface, and displaying the real-time temperature data of the rubber roller through the human-computer interaction interface; The spraying time and the spraying pressure of the solvent spraying assembly are set through the human-computer interaction interface.

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