Two-component glue liquid dispensing control method, system, device and medium

Abstract

The present disclosure provides a two-component glue liquid dispensing control method, system, device and medium, which obtains proportioning parameters and dispensing task parameters, calculates the glue suction stroke distance of the double servo motor according to the proportioning ratio and the plunger cross-sectional area, performs glue suction action and conducts anti-glue channeling monitoring, pushes the two-component glue liquid into the static mixing tube for mixing, and then performs dispensing through the piezoelectric dispensing valve, independently performs PID closed-loop control through the multi-path temperature acquisition channel throughout the whole process, and sets the proportioning control module, the anti-glue channeling monitoring module, the temperature control module, the piezoelectric valve dispensing control module and the central coordination module, so as to realize high-precision proportioning of the two-component glue liquid, trajectory linkage glue output, voltage closed-loop compensation, anti-glue channeling grading protection and temperature false alarm protection.

Description

Technical Field

[0001] This disclosure relates to the field of dispensing control technology, and more specifically, to a method, system, equipment, and medium for dispensing two-component adhesives. Background Technology

[0002] Two-component adhesives are formed by mixing a first component (base adhesive) and a second component (curing agent) in a specific ratio, which then undergoes a cross-linking reaction and cures. The coating equipment needs to measure and mix the first and second components in a precise ratio before coating them onto the surface of the workpiece. The accuracy of the ratio directly affects the curing performance, mechanical strength, and thermal conductivity of the adhesive, and is the core technical indicator of two-component coating equipment.

[0003] Existing two-component adhesive coating equipment generally suffers from the following technical problems: 1. Inflexible proportioning control: Traditional solutions use cylinder drive or gear pump metering, which cannot achieve high-precision variable proportioning control; 2. Lack of flow channel pressure monitoring, making it impossible to detect and prevent adhesive cross-contamination; 3. Lack of temperature control function, making it unable to adapt to the process requirements of adhesives of different viscosities under different ambient temperatures; 4. Fixed parameter control is used in the dispensing and coating stage, resulting in uneven adhesive dispensing during acceleration, deceleration, and corner movements, leading to defects such as adhesive buildup at the starting point, stringing at the endpoint, and accumulation at corners; 5. Lack of a closed-loop compensation mechanism for adhesive dispensing volume, making it impossible to automatically correct adhesive dispensing volume drift during long-term operation.

[0004] Therefore, there is an urgent need for a two-component adhesive dispensing control method that can achieve flexible ratio control, has flow channel pressure monitoring and temperature control functions, and a closed-loop compensation mechanism for dispensing volume, so as to fundamentally solve the above-mentioned technical problems.

[0005] Public content

[0006] The purpose of this disclosure is to provide a two-component adhesive dispensing control method and system, which at least partially solves the technical problems existing in the prior art. It integrates four major functions: dual servo motor variable ratio control, piezoelectric transmitter anti-adhesion monitoring, multi-channel temperature control with false alarm protection, and piezoelectric valve trajectory linkage precision dispensing, to achieve closed-loop control of the entire process of two-component adhesive from ratio metering, pressure monitoring, temperature control to precision coating.

[0007] According to one aspect of this disclosure, a two-component adhesive dispensing control method is provided, applied to a two-component adhesive dispensing device. The dispensing device includes a first component flow channel and a second component flow channel, a first servo motor and a second servo motor respectively driving a first plunger and a second plunger, an inlet stop valve group, an outlet stop valve group, a first pressure sensor and a second pressure sensor respectively installed on the first component flow channel and the second component flow channel, a piezoelectric dispensing valve, a static mixing tube, a multi-channel temperature acquisition channel, and a controller. The two-component adhesive dispensing control method includes the following steps:

[0008] (1) Obtain the mixing ratio parameters and dispensing task parameters. The mixing ratio parameters include the target dispensing amount of the first component adhesive, the target dispensing amount of the second component adhesive, and the mixing ratio value. The mixing ratio value is the ratio of the volume of the first component adhesive to the volume of the second component adhesive. The dispensing task parameters include the dispensing trajectory, the motion speed curve, and the adhesive characteristic parameters. The adhesive characteristic parameters include the adhesive viscosity.

[0009] (2) Based on the ratio value and the cross-sectional area of ​​the first plunger and the cross-sectional area of ​​the second plunger, calculate the suction stroke distance of the first plunger driven by the first servo motor and the suction stroke distance of the second plunger driven by the second servo motor, so that the ratio of the volume of the first component adhesive sucked by the first plunger to the volume of the second component adhesive sucked by the second plunger is equal to the ratio value.

[0010] (3) Control the first servo motor and the second servo motor to drive the first plunger and the second plunger to move in the retraction direction according to their respective glue suction stroke distances, and at the same time collect the flow channel pressure signal in real time through the first pressure sensor and the second pressure sensor to perform anti-glue cross-flow monitoring;

[0011] (4) Close the glue inlet shut-off valve assembly to seal the plunger chambers of the first plunger and the second plunger respectively;

[0012] (5) Open the glue dispensing stop valve group, control the first servo motor and the second servo motor to drive the first plunger and the second plunger to move in the pushing direction according to their respective glue pushing stroke distances. The glue pushing stroke distance is equal to the glue suction stroke distance. After the first component glue and the second component glue are pushed into the static mixing tube for mixing, the glue is dispensed through the piezoelectric dispensing valve. Based on the first derivative of the motion speed curve and the trajectory curvature of the dispensing trajectory, the dispensing process is divided into multiple control segments. The target piezoelectric valve driving parameters are calculated for each control segment to achieve dispensing control linked with the dispensing trajectory.

[0013] (6) After the dispensing and pushing of glue are completed, close the glue dispensing shut-off valve assembly;

[0014] (7) During the entire process of steps (3) to (6), real-time temperature data of each temperature control position in the equipment are collected through the multi-channel temperature acquisition. The temperature control position includes at least one of the first component flow channel, the second component flow channel, the static mixing tube and the piezoelectric dispensing valve. PID closed-loop control is independently executed for each temperature acquisition channel.

[0015] (8) Return to step (1) to enter the next loop.

[0016] In one exemplary embodiment of this disclosure, the method for calculating the adhesive suction travel distance in step (2) includes the following steps:

[0017] Based on the cross-sectional areas of the first and second plungers, the volume of the adhesive is converted into the plunger stroke distance. The first plunger suction stroke distance is equal to the target amount of adhesive dispensed from the first component divided by the cross-sectional area of ​​the first plunger, and the second plunger suction stroke distance is equal to the target amount of adhesive dispensed from the second component divided by the cross-sectional area of ​​the second plunger.

[0018] When the cross-sectional area of ​​the first plunger is the same as that of the second plunger, the ratio of the suction stroke distance is equal to the mixing ratio.

[0019] In one exemplary embodiment of this disclosure, the method of dividing the dispensing process into control segments in step (5) includes the following steps:

[0020] When the first derivative of the motion velocity curve is greater than the acceleration / deceleration judgment threshold, it is determined to be an acceleration segment;

[0021] When the absolute value of the first derivative of the velocity curve does not exceed the acceleration / deceleration threshold, it is determined to be a uniform velocity segment.

[0022] When the first derivative of the motion velocity curve is less than the negative value of the acceleration / deceleration judgment threshold, it is determined to be a deceleration section;

[0023] When the trajectory curvature is greater than the curvature threshold, it is determined to be a corner section; among them, each control section is sorted from high to low priority as follows: corner section, acceleration section, deceleration section, and constant speed section;

[0024] When two or more control sections overlap in spatial location, the driving parameters used in the overlapping area are determined according to the priority order.

[0025] In one exemplary embodiment of this disclosure, step (5) further includes a piezoelectric valve drive voltage compensation step:

[0026] The actual output voltage of the piezoelectric dispensing valve drive circuit is acquired in real time at a sampling frequency no lower than a first frequency. The difference between the target voltage and the actual output voltage is taken as the voltage deviation. When the absolute value of the voltage deviation exceeds a first threshold, the PWM duty cycle is adjusted according to the ratio of the target voltage to the filter voltage, and the drive frequency is corrected by multiplying the voltage deviation by a preset frequency compensation gain coefficient. Both the adjustment of the duty cycle and the correction of the drive frequency are equipped with amplitude limiting protection.

[0027] When the voltage deviation is detected to be greater than the first threshold by a preset alarm multiple for a continuous period of time exceeding the preset alarm time, a power supply abnormality alarm is triggered and dispensing is suspended.

[0028] In one exemplary embodiment of this disclosure, the anti-channeling adhesive monitoring in step (3) includes the following steps:

[0029] The signals from the first pressure sensor and the second pressure sensor are preprocessed, including spike removal and moving average filtering.

[0030] Calculate the pressure difference and pressure change rate of the two-component flow channels;

[0031] Perform self-diagnostics on the pressure sensor, including open circuit detection, short circuit detection, and drift detection;

[0032] When the pressure difference exceeds the first threshold, it is determined to be a Level 1 anomaly, triggering an early warning.

[0033] When the pressure difference exceeds the second threshold, the absolute pressure exceeds the upper limit, or the pressure change rate exceeds the change rate threshold, it is judged as a level two abnormality, and the glue discharge stop valve is closed and the servo motor is stopped.

[0034] When the pressure sensor experiences a disconnection, short circuit, or drift fault, it is determined to be a level three abnormality, the main power supply is cut off, and an emergency stop is triggered.

[0035] In one exemplary embodiment of this disclosure, the false alarm protection judgment with delayed confirmation in step (7) includes the following steps:

[0036] When the real-time temperature exceeds the preset upper or lower threshold, an alarm delay timer is started. The temperature over-limit alarm is only confirmed to be triggered after the temperature has been continuously exceeding the threshold for a period of time exceeding the preset alarm delay time.

[0037] Calculate the absolute value of the deviation between the real-time temperature and the target set temperature. When the absolute value of the deviation exceeds the preset deviation alarm threshold, start the deviation alarm delay timer. Only when the absolute value of the deviation continues to exceed the deviation alarm threshold for a period of time longer than the preset deviation alarm delay time will the deviation alarm be confirmed to be triggered.

[0038] If the temperature drops back below the threshold during the alarm delay timer, the alarm delay timer is reset and the fluctuation is considered normal, and no alarm is triggered.

[0039] Based on the thermal inertia characteristics of each dispensing station, alarm delay time is independently configured for each temperature acquisition channel;

[0040] The first delay duration is used during the heating and temperature rise stage, and the second delay duration is used during the constant temperature holding stage. The first delay duration is longer than the second delay duration.

[0041] When the same channel triggers the same type of alarm more than a preset number of times within a preset time window, the delay window for subsequent alarms will be shortened to a third delay duration, which is shorter than the second delay duration.

[0042] According to one aspect of this disclosure, a two-component adhesive dispensing control system is provided, applied to a two-component adhesive dispensing device. The dispensing device includes a first component flow channel and a second component flow channel, a first servo motor and a second servo motor respectively driving a first plunger and a second plunger, an inlet stop valve group, an outlet stop valve group, a first pressure sensor and a second pressure sensor respectively installed on the first component flow channel and the second component flow channel, a piezoelectric dispensing valve, a static mixing tube, a multi-channel temperature acquisition channel, and a controller. The two-component adhesive dispensing control system includes:

[0043] The mixing ratio control module is used to acquire mixing ratio parameters and dispensing task parameters. Based on the mixing ratio value and the cross-sectional areas of the first and second plungers, it calculates the adhesive suction stroke distance driven by the first servo motor and the adhesive suction stroke distance driven by the second servo motor, respectively, such that the ratio of the volume of the first component adhesive sucked in by the first plunger to the volume of the second component adhesive sucked in by the second plunger is equal to the mixing ratio value. It controls the first and second servo motors to drive the first and second plungers in the retracting direction to perform adhesive suction and to drive them in the advancing direction to perform adhesive pushing, respectively, according to their respective adhesive pushing stroke distances, where the adhesive pushing stroke distance is equal to the adhesive suction stroke distance. It also controls the opening and closing of the adhesive inlet stop valve group and the adhesive outlet stop valve group.

[0044] The anti-adhesion monitoring module is used to collect flow channel pressure signals in real time through the first pressure sensor and the second pressure sensor to perform anti-adhesion monitoring.

[0045] The temperature control module is used to collect real-time temperature data of each temperature control location in the device through the multi-channel temperature acquisition. The temperature control location includes at least one of the first component flow channel, the second component flow channel, the static mixing tube, and the piezoelectric dispensing valve. The module independently performs PID closed-loop control on each temperature acquisition channel.

[0046] The piezoelectric valve dispensing control module is used to divide the dispensing process into multiple control segments based on the first derivative of the motion speed curve and the trajectory curvature of the dispensing trajectory, calculate the target piezoelectric valve driving parameters for each control segment, and realize dispensing control linked with the dispensing trajectory.

[0047] The central coordination module is connected to the mixing ratio control module, the anti-adhesive cross-contamination monitoring module, the temperature control module, and the piezoelectric valve dispensing control module, and is used to coordinate the operation sequence of each module.

[0048] In one exemplary embodiment of this disclosure, the anti-adhesive cross-contamination monitoring module includes:

[0049] The signal preprocessing submodule is used to perform spike removal and moving average filtering on the pressure signal;

[0050] The sensor self-diagnostic submodule is used to perform open circuit detection, short circuit detection, and drift detection;

[0051] The multi-dimensional anomaly determination submodule is used to perform pressure difference anomaly determination, absolute pressure anomaly determination, and rate of change anomaly determination, and outputs the anomaly level through priority encoding;

[0052] The graded protection submodule is used to execute level one early warning, level two alarm, or level three emergency protection actions according to the level of abnormality.

[0053] In one exemplary embodiment of this disclosure, it further includes:

[0054] The formula management module is used to store the mixing ratio, target glue output, temperature PID parameters of each channel, alarm threshold and piezoelectric valve drive parameters as a set of formula parameters to a non-volatile storage medium, and receive formula selection instructions to automatically load the corresponding parameters.

[0055] The glue dispensing compensation module is used to calculate the deviation rate between the actual glue dispensing amount and the target glue dispensing amount after each cycle, and to compensate and correct the glue suction stroke distance for the next cycle.

[0056] The self-learning module is used to collect actual glue application effect data, update the coefficients of the multi-parameter correlation model using the exponential weighted moving average method, and maintain a parameter database indexed by glue type and environmental conditions.

[0057] The communication reporting module is used to report the anomaly level, fault logs, and predictive maintenance information to the host computer through the communication interface.

[0058] According to one aspect of this disclosure, an electronic device is provided, comprising:

[0059] Memory; and

[0060] A processor coupled to the memory is configured to execute the above-described two-component adhesive dispensing control method based on instructions stored in the memory.

[0061] According to one aspect of this disclosure, a computer-readable storage medium is provided having a computer program stored thereon that, when executed by a processor, implements the above-described two-component adhesive dispensing control method.

[0062] This disclosure presents a two-component adhesive dispensing control method, system, electronic equipment, and medium. By acquiring mixing ratio parameters and dispensing task parameters, the adhesive suction stroke distance of dual servo motors is calculated based on the mixing ratio and plunger cross-sectional area. The adhesive suction action is executed, and anti-adhesion monitoring is performed. After sealing the plunger cavity, adhesive is pushed into a static mixing tube for mixing, and then dispensing is performed through a piezoelectric dispensing valve. Based on the first derivative of the motion speed curve and the trajectory curvature, the dispensing process is divided into multiple control segments. Target piezoelectric valve drive parameters are calculated for each segment to achieve dispensing control linked to the dispensing trajectory. PID closed-loop control is independently executed throughout the process via multiple temperature acquisition channels. By setting up a mixing ratio control module, an anti-adhesion monitoring module, a temperature control module, a piezoelectric valve dispensing control module, and a central coordination module, high-precision mixing of the two-component adhesive, trajectory-linked dispensing, voltage closed-loop compensation, graded anti-adhesion protection, and temperature false alarm protection are achieved.

[0063] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0064] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. It is obvious that the drawings described below are merely some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0065] Figure 1 The flowchart of the two-component adhesive dispensing control method 100 in the first embodiment of this disclosure is shown schematically.

[0066] Figure 2 schematically shown Figure 1 The execution steps of step S112 in the flowchart.

[0067] Figure 3 schematically shown Figure 1 The execution steps of step S118 in the flowchart.

[0068] Figure 4 schematically shown Figure 3 The execution steps of the second embodiment S118A are shown in the diagram.

[0069] Figure 5 schematically shown Figure 1The execution steps of step S114 in the flowchart.

[0070] Figure 6 schematically shown Figure 1 The execution steps of step S122 in the flowchart.

[0071] Figure 7 The schematic diagram illustrates the module structure of the two-component adhesive dispensing control system 200 according to the first embodiment of this disclosure.

[0072] Figure 8 schematically shown Figure 7 A schematic diagram of the anti-adhesive cross-contamination monitoring module 220.

[0073] Figure 9 schematically shown Figure 7 A schematic diagram of the medium-voltage electric valve dispensing control module 240.

[0074] Figure 10 The schematic diagram illustrates a module of the two-component adhesive dispensing control system 200A according to a second embodiment of the present disclosure.

[0075] Figure 11 The diagram illustrates a block diagram of an electronic device 300 according to an exemplary embodiment of the present disclosure. Detailed Implementation

[0076] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided to make this disclosure more comprehensive and complete, and to fully convey the concept of the example embodiments to those skilled in the art. The described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a full understanding of embodiments of this disclosure. However, those skilled in the art will recognize that the technical solutions of this disclosure can be practiced with one or more of the specific details omitted, or other methods, components, apparatus, steps, etc., can be employed. In other instances, well-known technical solutions are not shown or described in detail to avoid obscuring various aspects of this disclosure.

[0077] Furthermore, the accompanying drawings are merely illustrative of this disclosure, and the same reference numerals in the drawings denote the same or similar parts, thus repeated descriptions of them will be omitted. Some block diagrams shown in the drawings are functional entities and do not necessarily correspond to physically or logically independent entities. These functional entities may be implemented in software, in one or more hardware modules or integrated circuits, or in different network and / or processor devices and / or microcontroller devices.

[0078] The exemplary embodiments of this disclosure will now be described in detail with reference to the accompanying drawings.

[0079] Figure 1 The flowchart of the two-component adhesive dispensing control method 100 in the first embodiment of this disclosure is shown schematically.

[0080] Figure 2 schematically shown Figure 1 The execution steps of step S112 in the flowchart.

[0081] Figure 3 schematically shown Figure 1 The execution steps of step S118 in the flowchart.

[0082] Figure 4 schematically shown Figure 3 The execution steps of the second embodiment S118A are shown in the diagram.

[0083] Figure 5 schematically shown Figure 1 The execution steps of step S114 in the flowchart.

[0084] Figure 6 schematically shown Figure 1 The execution steps of step S122 in the flowchart.

[0085] refer to Figure 1 This disclosure discloses a two-component adhesive dispensing control method 100, applied to a two-component adhesive dispensing equipment. The dispensing equipment includes a first component flow channel and a second component flow channel, a first servo motor and a second servo motor respectively driving the first plunger and the second plunger, an adhesive inlet stop valve group, an adhesive outlet stop valve group, a first pressure sensor and a second pressure sensor respectively installed on the first component flow channel and the second component flow channel, a piezoelectric dispensing valve, a static mixing tube, a multi-channel temperature acquisition channel, and a controller. The two-component adhesive dispensing control method includes the following steps:

[0086] S110, obtain the mixing ratio parameters and dispensing task parameters. The mixing ratio parameters include the target dispensing amount of the first component adhesive, the target dispensing amount of the second component adhesive, and the mixing ratio value. The mixing ratio value is the ratio of the volume of the first component adhesive to the volume of the second component adhesive. The dispensing task parameters include the dispensing trajectory, the motion speed curve, and the adhesive characteristic parameters. The adhesive characteristic parameters include the adhesive viscosity.

[0087] S112, based on the mixing ratio and the cross-sectional areas of the first and second plungers, calculate the adhesive suction stroke distance of the first plunger driven by the first servo motor and the adhesive suction stroke distance of the second plunger driven by the second servo motor, so that the ratio of the volume of the first component adhesive sucked in by the first plunger to the volume of the second component adhesive sucked in by the second plunger is equal to the mixing ratio.

[0088] S114, control the first servo motor and the second servo motor to drive the first plunger and the second plunger to move in the retracting direction according to their respective glue suction stroke distances, and at the same time collect the flow channel pressure signal in real time through the first pressure sensor and the second pressure sensor to perform anti-glue cross-flow monitoring.

[0089] S116, close the glue inlet shut-off valve assembly, and seal the plunger chambers of the first plunger and the second plunger respectively;

[0090] S118, open the glue dispensing stop valve group, control the first servo motor and the second servo motor to drive the first plunger and the second plunger to move in the pushing direction according to their respective glue pushing stroke distances. The glue pushing stroke distance is equal to the glue suction stroke distance. After the first component glue and the second component glue are pushed into the static mixing tube for mixing, the glue is dispensed through the piezoelectric dispensing valve. Based on the first derivative of the motion speed curve and the trajectory curvature of the dispensing trajectory, the dispensing process is divided into multiple control segments. The target piezoelectric valve driving parameters are calculated for each control segment to achieve dispensing control linked with the dispensing trajectory.

[0091] S120, after the dispensing and pushing of glue are completed, close the glue dispensing shut-off valve assembly;

[0092] S122, throughout the entire process from S114 to S118, real-time temperature data of each temperature control position in the equipment is collected through multiple temperature acquisition channels. The temperature control position includes at least one of the first component flow channel, the second component flow channel, the static mixing tube, and the piezoelectric dispensing valve. PID closed-loop control is independently executed for each temperature acquisition channel.

[0093] S124, return to step S110 to enter the next loop.

[0094] The following is a detailed explanation of each step of the two-component adhesive dispensing control method 100.

[0095] The mixing parameters in step S110 include the target dispensing amount V1 of the first component adhesive, the target dispensing amount V2 of the second component adhesive, and the mixing ratio R, where R = V1 / V2. The dispensing task parameters include the dispensing trajectory, the motion speed curve v(t), and the adhesive characteristic parameters (including the adhesive viscosity η).

[0096] refer to Figure 2 The calculation method for the adhesive suction travel distance in step S112 includes the following steps:

[0097] S1122, Based on the cross-sectional area of ​​the first plunger and the cross-sectional area of ​​the second plunger, the volume of the adhesive is converted into the plunger stroke distance. The first plunger suction stroke distance is equal to the target amount of adhesive output of the first component divided by the cross-sectional area of ​​the first plunger, and the second plunger suction stroke distance is equal to the target amount of adhesive output of the second component divided by the cross-sectional area of ​​the second plunger.

[0098] S1124, when the cross-sectional area of ​​the first plunger is the same as that of the second plunger, the ratio of the suction stroke distance is equal to the mixing ratio.

[0099] Specifically, the suction stroke distance of the first plunger is L1 = V1 / A1, and the suction stroke distance of the second plunger is L2 = V2 / A2, where A1 and A2 are the cross-sectional areas of the first and second plungers, respectively. When A1 = A2, L1 / L2 = R. Through the above calculations, it is ensured that the ratio of the volume of adhesive sucked up by the two plungers is precisely equal to the mixing ratio.

[0100] refer to Figure 3 The method of dividing the dispensing process into control sections in step S118 includes the following steps:

[0101] S1182, when the first derivative of the motion velocity curve is greater than the acceleration / deceleration judgment threshold, it is determined to be an acceleration segment;

[0102] S1184, when the absolute value of the first derivative of the velocity curve does not exceed the acceleration / deceleration threshold, it is determined to be a uniform velocity segment;

[0103] S1186, when the first derivative of the motion velocity curve is less than the negative value of the acceleration / deceleration judgment threshold, it is determined to be a deceleration section;

[0104] S1188, when the trajectory curvature is greater than the curvature threshold, it is determined to be a corner section; among them, the control sections are sorted in the following order of priority from high to low: corner section, acceleration section, deceleration section, and constant speed section.

[0105] S11810 When two or more control sections overlap in spatial location, the driving parameters used in the overlapping area are determined according to priority.

[0106] Specifically, based on the first derivative dv / dt of the motion velocity curve v(t) and the trajectory curvature κ(t) of the dispensing trajectory, the dispensing process is divided into multiple control segments:

[0107] When dv / dt is greater than the acceleration / deceleration threshold a_th, it is determined to be an acceleration section; when |dv / dt|≤a_th, it is determined to be a uniform speed section; when dv / dt is less than -a_th, it is determined to be a deceleration section; when κ(t) is greater than the curvature threshold κ_th, it is determined to be a corner section.

[0108] The control sections are ordered from highest to lowest priority as follows: corner section, acceleration section, deceleration section, and constant speed section. When two or more control sections overlap in spatial location, the driving parameters for the overlapping area are determined according to the priority order.

[0109] For each control section, the target piezoelectric valve drive parameters (including drive frequency, target drive voltage, pulse width, and stroke count) are calculated through a multi-parameter correlation model to achieve dispensing control linked to the dispensing trajectory.

[0110] refer to Figure 4 In step S118, the second embodiment S118A, which divides the dispensing process into control sections, also includes a piezoelectric valve drive voltage compensation step:

[0111] S11812 acquires the actual output voltage of the piezoelectric dispensing valve drive circuit in real time at a sampling frequency not lower than the first frequency. The difference between the target voltage and the actual output voltage is used as the voltage deviation. When the absolute value of the voltage deviation exceeds the first threshold, the PWM duty cycle is adjusted according to the ratio of the target voltage to the filter voltage, and the drive frequency is corrected by multiplying the voltage deviation by a preset frequency compensation gain coefficient according to the ratio of the voltage deviation to the target voltage. Both the duty cycle adjustment and the drive frequency correction are equipped with amplitude limiting protection.

[0112] S11814 When a voltage deviation is detected to be greater than a first threshold multiple of the preset alarm time for an extended period, a power supply abnormality alarm is triggered and dispensing is suspended.

[0113] refer to Figure 5 The anti-channeling adhesive monitoring in step S114 includes the following steps:

[0114] S1140 performs signal preprocessing on the signals from the first pressure sensor and the second pressure sensor, including spike removal and moving average filtering.

[0115] S1142, calculate the pressure difference and pressure change rate of the two-component flow channels;

[0116] S1144 performs self-diagnostics on the pressure sensor, including open circuit detection, short circuit detection, and drift detection;

[0117] S1146, When the pressure difference exceeds the first threshold, it is determined to be a level one anomaly and an early warning is triggered;

[0118] S1148: When the pressure difference exceeds the second threshold, the absolute pressure exceeds the upper limit, or the pressure change rate exceeds the change rate threshold, it is judged as a level two abnormality, and the glue outlet shut-off valve is closed and the servo motor is stopped.

[0119] S11410: When the pressure sensor experiences a disconnection, short circuit, or drift fault, it is determined to be a level three abnormality, and the main power supply is cut off and an emergency stop is triggered.

[0120] Specifically, the pressure sensor signal undergoes preprocessing, including spike removal and moving average filtering, to eliminate transient interference in the industrial environment. The pressure difference ΔP and pressure change rates dP1 / dt and dP2 / dt of the two-component flow channels are calculated.

[0121] A disconnection fault is determined when the original sensor signal is greater than or equal to the full-scale value; a short circuit fault is determined when the original signal is less than or equal to the zero value threshold and continues to exceed the preset short circuit duration; the difference between the actual zero point value and the reference zero point value is collected when the device is in no-load condition, and the absolute value of the difference is greater than the drift threshold, which is determined as a drift fault.

[0122] When |ΔP| exceeds the first threshold, it is determined to be a Level 1 anomaly and an early warning is triggered; when |ΔP| exceeds the second threshold, the absolute pressure exceeds the upper limit, or the pressure change rate exceeds the change rate threshold, it is determined to be a Level 2 anomaly, the dispensing stop valve is closed and the servo motor is stopped; when the pressure sensor experiences a disconnection, short circuit, or drift fault, it is determined to be a Level 3 anomaly, the main power supply is cut off and an emergency stop is triggered.

[0123] refer to Figure 6 The false alarm protection judgment with delayed confirmation in step S122 includes the following steps:

[0124] S1220 When the real-time temperature exceeds the preset upper or lower threshold, an alarm delay timer is started. The temperature over-limit alarm is only confirmed to be triggered after the temperature has exceeded the threshold for a period of time exceeding the preset alarm delay time.

[0125] S1222, calculate the absolute value of the deviation between the real-time temperature and the target set temperature. When the absolute value of the deviation exceeds the preset deviation alarm threshold, start the deviation alarm delay timer. Only when the absolute value of the deviation continues to exceed the deviation alarm threshold for a period of time exceeding the preset deviation alarm delay time will the deviation alarm be confirmed to be triggered.

[0126] S1224: If the temperature drops below the threshold during the alarm delay timer, the alarm delay timer is reset and the fluctuation is considered normal, and no alarm is triggered.

[0127] S1226, based on the thermal inertia characteristics of each dispensing station, independently configure the alarm delay time for each temperature acquisition channel;

[0128] S1228, a first delay duration is used in the heating and temperature rise stage, and a second delay duration is used in the constant temperature holding stage, wherein the first delay duration is longer than the second delay duration;

[0129] S12210: When the same channel triggers the same type of alarm more than a preset number of times within a preset time window, the delay window of subsequent alarms is shortened to a third delay duration, which is less than the second delay duration.

[0130] Specifically, when the real-time temperature exceeds the preset upper or lower threshold, an alarm delay timer is activated. A temperature over-limit alarm is only triggered if the temperature remains above the threshold for a period exceeding the preset alarm delay time. The absolute value of the deviation between the real-time temperature and the target set temperature is calculated. When the absolute value of the deviation exceeds the preset deviation alarm threshold, a deviation alarm delay timer is activated. A deviation alarm is only triggered if the absolute value of the deviation remains above the deviation alarm threshold for a period exceeding the preset deviation alarm delay time. During the alarm delay timer, if the temperature falls back below the threshold, the alarm delay timer is reset and the fluctuation is considered normal, without triggering an alarm.

[0131] Based on the thermal inertia characteristics of each dispensing station, an alarm delay time is independently configured for each temperature acquisition channel. A first delay duration is used during the heating and temperature rise phase, and a second delay duration is used during the temperature holding phase. The first delay duration is longer than the second delay duration. If the same channel triggers the same type of alarm more than a preset number of times within a preset time window, the delay window for subsequent alarms is shortened to a third delay duration, which is shorter than the second delay duration.

[0132] Figure 7 The schematic diagram illustrates the module structure of the two-component adhesive dispensing control system 200 according to the first embodiment of this disclosure.

[0133] Figure 8 schematically shown Figure 7 A schematic diagram of the anti-adhesive cross-contamination monitoring module 220.

[0134] Figure 9 schematically shown Figure 7 A schematic diagram of the medium-voltage electric valve dispensing control module 240.

[0135] Figure 10 The schematic diagram illustrates a module of the two-component adhesive dispensing control system 200A according to a second embodiment of the present disclosure.

[0136] refer to Figure 7 The two-component adhesive dispensing control system 200 includes:

[0137] The mixing control module 210 is used to acquire mixing parameters and dispensing task parameters. Based on the mixing ratio and the cross-sectional areas of the first and second plungers, it calculates the suction stroke distance of the first plunger driven by the first servo motor and the suction stroke distance of the second plunger driven by the second servo motor, respectively, so that the ratio of the volume of the first component adhesive sucked in by the first plunger to the volume of the second component adhesive sucked in by the second plunger is equal to the mixing ratio. It controls the first and second servo motors to drive the first and second plungers to move in the retracting direction to perform the suction action according to their respective suction stroke distances, and to drive the first and second plungers to move in the advancing direction to perform the pushing action according to their respective pushing stroke distances, with the pushing stroke distance equal to the suction stroke distance. It also controls the opening and closing of the glue inlet stop valve group and the glue outlet stop valve group.

[0138] The anti-adhesion monitoring module 220 is used to collect flow channel pressure signals in real time through the first pressure sensor and the second pressure sensor to perform anti-adhesion monitoring.

[0139] The temperature control module 230 is used to collect real-time temperature data of each temperature control position in the equipment through multiple temperature acquisition channels. The temperature control position includes at least one of the first component flow channel, the second component flow channel, the static mixing tube and the piezoelectric dispensing valve. PID closed-loop control is independently executed for each temperature acquisition channel.

[0140] The piezoelectric valve dispensing control module 240 is used to divide the dispensing process into multiple control segments based on the first derivative of the motion speed curve and the trajectory curvature of the dispensing trajectory. For each control segment, the target piezoelectric valve driving parameters are calculated to achieve dispensing control linked to the dispensing trajectory.

[0141] The central coordination module 250 is connected to the proportioning control module, the anti-adhesive cross-contamination monitoring module, the temperature control module, and the piezoelectric valve dispensing control module, and is used to coordinate the operation sequence of each module.

[0142] refer to Figure 8 The anti-adhesive cross-contamination monitoring module 220 in the two-component adhesive dispensing control system 200 includes:

[0143] The signal preprocessing submodule 222 is used to perform spike removal and moving average filtering on the pressure signal;

[0144] The sensor self-diagnostic submodule 224 is used to perform open circuit detection, short circuit detection and drift detection;

[0145] The multi-dimensional anomaly determination submodule 226 is used to perform pressure difference anomaly determination, absolute pressure anomaly determination, and rate of change anomaly determination, and outputs the anomaly level through priority encoding.

[0146] The graded protection submodule 228 is used to execute level one early warning, level two alarm or level three emergency protection actions according to the level of abnormality.

[0147] refer to Figure 9 The two-component adhesive dispensing control system 200 includes a high-voltage electric valve dispensing control module 240 comprising:

[0148] The trajectory segmentation submodule 242 is used to divide the dispensing process into acceleration segment, uniform speed segment, deceleration segment and corner segment based on the first derivative of the motion velocity curve and the trajectory curvature of the dispensing trajectory.

[0149] The segment priority management submodule 244 is used to assign priority order to each control segment. When there is overlap between control segments, the final driving parameters of the overlapping area are determined according to the priority order.

[0150] The parameter calculation submodule 246 includes a multi-parameter correlation model, which is used to calculate the optimal piezoelectric valve drive parameters, including drive frequency, target drive voltage, pulse width and stroke count, for each control segment.

[0151] The multi-stroke control submodule 248 is used to generate multi-stroke segmented drive signals and adaptively calculate the stroke interval time based on the viscosity of the adhesive and the feeding pressure.

[0152] The voltage compensation submodule 2410 is used to perform real-time closed-loop compensation of the drive voltage at a sampling frequency not lower than the first frequency.

[0153] refer to Figure 10 The second embodiment 200A of the two-component adhesive dispensing control system 200 further includes:

[0154] The formula management module 260 is used to store the mixing ratio, target glue output, temperature PID parameters of each channel, alarm threshold and piezoelectric valve drive parameters as a set of formula parameters to a non-volatile storage medium, and receive formula selection instructions to automatically load the corresponding parameters.

[0155] The glue dispensing compensation module 270 is used to calculate the deviation rate between the actual glue dispensing amount and the target glue dispensing amount after each cycle, and to compensate and correct the glue suction stroke distance for the next cycle.

[0156] The self-learning module 280 is used to collect actual glue application effect data, update the coefficients of the multi-parameter correlation model using the exponential weighted moving average method, and maintain a parameter database indexed by glue type and environmental conditions.

[0157] The communication reporting module 290 is used to report the anomaly level, fault log and predictive maintenance information to the host computer through the communication interface.

[0158] Since the functions of the two-component adhesive dispensing control system have been described in detail in their corresponding method embodiments, they will not be repeated here.

[0159] Based on the above specific embodiments, the two-component adhesive dispensing control method and control system disclosed herein have at least the following technical effects:

[0160] 1. Achieving precise dispensing control of a piezoelectric valve linked to the dispensing trajectory. This disclosure divides the dispensing process into acceleration, constant speed, deceleration, and corner sections based on the first derivative of the motion velocity curve and the trajectory curvature of the dispensing path. Priority is assigned to each control section (from highest to lowest: corner section, acceleration section, deceleration section, constant speed section). When two or more control sections overlap spatially, the driving parameters for the overlapping area are determined according to priority, avoiding parameter conflicts. For each control section, the optimal piezoelectric valve driving parameters, including driving frequency, target driving voltage, pulse width, and stroke count, are calculated using a multi-parameter correlation model, enabling real-time linkage between dispensing volume and the dispensing trajectory. This solution effectively solves the technical problems of insufficient dispensing volume in the acceleration section, excessive dispensing volume in the deceleration section, and adhesive accumulation at corners in traditional fixed dispensing parameter schemes, significantly improving the uniformity and consistency of dispensing under complex trajectories.

[0161] 2. Real-time closed-loop compensation of the piezoelectric valve drive voltage ensures stable dispensing volume. This disclosure acquires the actual output voltage of the piezoelectric dispensing valve drive circuit in real time at a sampling frequency no less than a first frequency. The difference between the target voltage and the actual output voltage is taken as the voltage deviation. When the voltage deviation exceeds a first threshold, the PWM duty cycle and drive frequency are adjusted synchronously for compensation and correction. Both duty cycle adjustment and frequency correction are equipped with amplitude limiting protection to prevent compensation overshoot. When the voltage deviation is detected to be greater than the first threshold by a preset alarm multiple for a continuous period exceeding the preset alarm time, a power abnormality alarm is triggered and dispensing is suspended to avoid product quality problems caused by continued dispensing under abnormal power conditions. This closed-loop compensation mechanism effectively overcomes the influence of temperature drift, power fluctuation, and load changes on the piezoelectric valve drive voltage, improving the consistency of dispensing volume to a high level.

[0162] 3. Multi-dimensional anti-adhesion monitoring and graded protection effectively prevent mixing ratio distortion and equipment damage. This disclosure uses pressure sensors to collect pressure signals from the two-component flow channels in real time. The signals undergo peak removal and moving average filtering preprocessing to eliminate transient interference in the industrial environment. Simultaneously, pressure sensor self-diagnosis is performed, including triple diagnostics of open circuit detection, short circuit detection, and drift detection, ensuring the reliability of the sensor signals. Based on this, priority coding is used to determine pressure difference anomalies, absolute pressure anomalies, and rate of change anomalies, outputting anomaly levels and executing graded protection actions according to the anomaly level: Level 1 anomalies trigger early warning (without interrupting production); Level 2 anomalies close the dispensing valve and stop the servo motor (protecting equipment); Level 3 anomalies cut off the main power supply and trigger an emergency stop (ensuring safety). This graded protection mechanism ensures production continuity while achieving a step-by-step response and effective control of adhesion cross-contamination risks.

[0163] 4. A temperature false alarm protection mechanism with delayed confirmation, balancing response speed and anti-interference capability. This disclosure initiates an alarm delay timer when the temperature exceeds a preset threshold. An over-limit alarm is only confirmed after the temperature has remained above the threshold for a period exceeding the preset alarm delay time. During the alarm delay timer, if the temperature falls back below the threshold, the timer is reset and considered normal fluctuation. This mechanism effectively eliminates false alarms caused by instantaneous temperature fluctuations due to electromagnetic interference, thermal inertia, and other factors in industrial environments. Furthermore, based on the thermal inertia characteristics of each dispensing station, the alarm delay time for each temperature acquisition channel is independently configured. A longer delay time is used during the heating and temperature rise phase (allowing for larger temperature overshoot), while a shorter delay time is used during the constant temperature holding phase (for rapid response to anomalies). When the same type of alarm is triggered consecutively, the delay window is automatically shortened (increasing the alert level), achieving adaptive matching between the delay parameters and actual working conditions.

[0164] 5. High-precision variable ratio mixing control with dual servo motors. This disclosure employs two servo motors independently driving two plungers, achieving variable ratio mixing control through precise calculation of the adhesive suction stroke distance (target dispensing amount divided by plunger cross-sectional area). The position control accuracy of the servo motors is far superior to that of traditional cylinder-driven solutions, resulting in high mixing accuracy. The two servo motors coordinate their movements during the dispensing process, ensuring that the first and second components of the adhesive complete their respective dispensing strokes within the same timeframe, guaranteeing real-time consistency of the mixing ratio.

[0165] 6. End-to-End Collaborative Control. The four main functions—mixing ratio control, anti-adhesion monitoring, piezoelectric valve dispensing control, and temperature control—are executed synchronously through a central coordination module. The execution sequence of each module is uniformly scheduled by the central coordination module, ensuring mixing accuracy, dispensing consistency, pressure safety, and temperature stability during the dispensing process. This collaborative control architecture avoids timing conflicts and resource contention issues that may occur when each functional module operates independently.

[0166] 7. Formula Management and Self-Learning Capability. The system supports storing mixing ratios, target glue output, PID parameters for various temperatures, alarm thresholds, and piezoelectric valve drive parameters as a set of formula parameters in non-volatile storage media. It can automatically load corresponding parameters based on formula selection commands, adapting to the production switching needs of multiple varieties and processes. The self-learning module continuously updates the coefficients of the multi-parameter correlation model by collecting actual glue output data and using an exponentially weighted moving average method, enabling the system to continuously optimize control accuracy over long-term operation. The glue output compensation module calculates the deviation rate between the actual glue output and the target glue output after each cycle and compensates for and corrects the glue suction stroke distance for the next cycle, achieving long-term stable metering accuracy.

[0167] It should be noted that although several modules or units for the device used to perform actions have been mentioned in the detailed description above, this division is not mandatory. In fact, according to embodiments of this disclosure, the features and functions of two or more modules or units described above can be embodied in one module or unit. Conversely, the features and functions of one module or unit described above can be further divided and embodied by multiple modules or units.

[0168] In an exemplary embodiment of this disclosure, an electronic device capable of implementing the above-described method is also provided.

[0169] Those skilled in the art will understand that various aspects of this disclosure can be implemented as a system, method, or program product. Therefore, various aspects of this disclosure can be specifically implemented in the following forms: a completely hardware implementation, a completely software implementation (including firmware, microcode, etc.), or a combination of hardware and software aspects, collectively referred to herein as a "circuit," "module," or "system."

[0170] The following reference Figure 11 To describe an electronic device 300 according to such an embodiment of the present disclosure. Figure 11 The electronic device 300 shown is merely an example and should not impose any limitation on the functionality and scope of use of the embodiments disclosed herein.

[0171] like Figure 11 As shown, the electronic device 300 is presented in the form of a general-purpose computing device. Components of the electronic device 300 may include, but are not limited to, a memory 320 and a processor 310 coupled to the memory 320, the processor 310 being configured to execute the aforementioned two-component adhesive dispensing control method 100 based on instructions stored in the memory 320. Data transmission occurs between the memory 320 and the processor 310 via a bus 330.

[0172] The memory 320 stores program code that can be executed by the processor 310, causing the processor 310 to perform the steps described in the "Exemplary Methods" section of this specification according to various exemplary embodiments of this disclosure. For example, the processor 310 can perform actions such as... Figure 1 Steps S110 to S124 are shown in the figure.

[0173] The memory 320 may include a readable medium in the form of volatile memory cells, such as random access memory (RAM) 3201 and / or cache memory 3202, and may further include read-only memory (ROM) 3203.

[0174] The memory 320 may also include a program / utility 3204 having a set (at least one) of program modules 3205, including but not limited to: an operating system, one or more application programs, other program modules, and program data, each or some combination of these examples may include an implementation of a network environment.

[0175] Bus 330 can represent one or more of several types of bus structures, including a memory cell bus or memory cell controller, a peripheral bus, a graphics acceleration port, a processing unit, or a local bus using any of the various bus structures.

[0176] Electronic device 300 can also communicate with one or more external devices 400 (e.g., keyboard, pointing device, Bluetooth device, etc.), and with one or more devices that enable a user to interact with electronic device 400, and / or with any device that enables electronic device 400 to communicate with one or more other computing devices (e.g., router, modem, etc.). This communication can be performed via input / output (I / O) interface 350. Furthermore, electronic device 400 can also communicate with one or more networks (e.g., local area network (LAN), wide area network (WAN), and / or public networks, such as the Internet) via network adapter 360. As shown, network adapter 360 communicates with other modules of electronic device 400 via bus 330. It should be understood that, although not shown in the figures, other hardware and / or software modules can be used in conjunction with electronic device 400, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.

[0177] From the above description of the embodiments, those skilled in the art will readily understand that the exemplary embodiments described herein can be implemented by software or by combining software with necessary hardware. Therefore, the technical solutions according to the embodiments of this disclosure can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (such as a CD-ROM, USB flash drive, external hard drive, etc.) or on a network, including several instructions to cause a computing device (such as a personal computer, server, terminal device, or network device, etc.) to execute the methods according to the embodiments of this disclosure.

[0178] In exemplary embodiments of this disclosure, a computer-readable storage medium is also provided, on which a program product capable of implementing the methods described above is stored. In some possible implementations, various aspects of this disclosure may also be implemented as a program product including program code that, when the program product is run on a terminal device, causes the terminal device to perform the steps of the various exemplary embodiments of this disclosure described in the "Exemplary Methods" section above.

[0179] The program product for implementing the above-described method according to embodiments of the present disclosure may employ a portable compact disc read-only memory (CD-ROM) and include program code, and may run on a terminal device, such as a personal computer. However, the program product of the present disclosure is not limited thereto. In this document, the readable storage medium may be any tangible medium containing or storing a program that may be used by or in conjunction with an instruction execution system, apparatus, or device.

[0180] The program product may employ any combination of one or more readable media. A readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of readable storage media (a non-exhaustive list) include: an electrical connection having one or more wires, a portable disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0181] Computer-readable signal media may include data signals propagated in baseband or as part of a carrier wave, carrying readable program code. Such propagated data signals may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A readable signal medium may also be any readable medium other than a readable storage medium, capable of sending, propagating, or transmitting programs for use by or in conjunction with an instruction execution system, apparatus, or device.

[0182] The program code contained on the readable medium may be transmitted using any suitable medium, including but not limited to wireless, wired, optical fiber, RF, etc., or any suitable combination thereof.

[0183] Program code for performing the operations of this disclosure can be written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Java and C++, and conventional procedural programming languages ​​such as C or similar languages. The program code can execute entirely on the user's computing device, partially on the user's computing device, as a standalone software package, partially on the user's computing device and partially on a remote computing device, or entirely on a remote computing device or server. In cases involving remote computing devices, the remote computing device can be connected to the user's computing device via any type of network, including a local area network (LAN) or a wide area network (WAN), or it can be connected to an external computing device (e.g., via the Internet using an Internet service provider).

[0184] Furthermore, the above figures are merely illustrative of the processes included in the method according to exemplary embodiments of this disclosure and are not intended to be limiting. It is readily understood that the processes shown in the above figures do not indicate or limit the temporal order of these processes. Additionally, it is readily understood that these processes may be executed synchronously or asynchronously, for example, in multiple modules.

[0185] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and concept of this disclosure are indicated by the claims.

Claims

1. A two-component adhesive dispensing control method, applied to a two-component adhesive dispensing equipment, the dispensing equipment comprising a first component flow channel and a second component flow channel, a first servo motor and a second servo motor respectively driving a first plunger and a second plunger, an adhesive inlet stop valve group, an adhesive outlet stop valve group, a first pressure sensor and a second pressure sensor respectively installed on the first component flow channel and the second component flow channel, a piezoelectric dispensing valve, a static mixing tube, a multi-channel temperature acquisition channel, and a controller, characterized in that, The two-component adhesive dispensing control method includes the following steps: (1) obtaining mixing parameters and dispensing task parameters, wherein the mixing parameters include the target dispensing amount of the first component adhesive, the target dispensing amount of the second component adhesive, and the mixing ratio, wherein the mixing ratio is the ratio of the volume of the first component adhesive to the volume of the second component adhesive, and the dispensing task parameters include the dispensing trajectory, the motion speed curve, and the adhesive characteristic parameters, wherein the adhesive characteristic parameters include the adhesive viscosity; (2) calculating the adhesive suction stroke distance of the first plunger driven by the first servo motor and the adhesive suction stroke distance of the second plunger driven by the second servo motor, respectively, based on the mixing ratio and the cross-sectional area of ​​the first plunger and the cross-sectional area of ​​the second plunger, such that the ratio of the volume of the first component adhesive sucked by the first plunger to the volume of the second component adhesive sucked by the second plunger is equal to the mixing ratio; (3) Control the first servo motor and the second servo motor to drive the first plunger and the second plunger to move in the retracting direction according to their respective glue suction stroke distances. At the same time, collect the flow channel pressure signal in real time through the first pressure sensor and the second pressure sensor to perform anti-glue cross-flow monitoring; (4) Close the glue inlet stop valve group to close the plunger chambers of the first plunger and the second plunger respectively; (5) Open the glue outlet stop valve group, control the first servo motor and the second servo motor to drive the first plunger and the second plunger to move in the pushing direction according to their respective glue pushing stroke distances. The glue pushing stroke distance is equal to the glue suction stroke distance. After the first component glue and the second component glue are pushed into the static mixing tube for mixing, the mixture is discharged through the... The piezoelectric dispensing valve performs dispensing. Based on the first derivative of the motion speed curve and the trajectory curvature of the dispensing trajectory, the dispensing process is divided into multiple control segments. The target piezoelectric valve drive parameters are calculated for each control segment to achieve dispensing control linked with the dispensing trajectory. (6) After the dispensing is completed, the dispensing stop valve group is closed. (7) During the entire process from (3) to (6), real-time temperature data of each temperature control position in the equipment is collected through the multi-channel temperature acquisition. The temperature control position includes at least one of the first component flow channel, the second component flow channel, the static mixing tube, and the piezoelectric dispensing valve. PID closed-loop control is independently executed for each temperature acquisition channel. (8) Return to step (1) to enter the next cycle.

2. The two-component adhesive dispensing control method as described in claim 1, characterized in that, The calculation method for the adhesive suction stroke distance in step (2) includes the following steps: converting the volume of adhesive liquid into the plunger stroke distance based on the cross-sectional area of ​​the first plunger and the cross-sectional area of ​​the second plunger; the adhesive suction stroke distance of the first plunger is equal to the target amount of adhesive dispensed from the first component divided by the cross-sectional area of ​​the first plunger; the adhesive suction stroke distance of the second plunger is equal to the target amount of adhesive dispensed from the second component divided by the cross-sectional area of ​​the second plunger; when the cross-sectional areas of the first plunger and the second plunger are the same, the ratio of the adhesive suction stroke distances is equal to the mixing ratio.

3. The two-component adhesive dispensing control method as described in claim 1, characterized in that, The method of dividing the dispensing process into control segments in step (5) includes the following steps: when the first derivative of the motion speed curve is greater than the acceleration / deceleration judgment threshold, it is determined to be an acceleration segment; when the absolute value of the first derivative of the motion speed curve does not exceed the acceleration / deceleration judgment threshold, it is determined to be a uniform speed segment; when the first derivative of the motion speed curve is less than the negative value of the acceleration / deceleration judgment threshold, it is determined to be a deceleration segment; when the trajectory curvature is greater than the curvature threshold, it is determined to be a corner segment; wherein, each control segment is sorted from high to low according to the following priority: corner segment, acceleration segment, deceleration segment, uniform speed segment; when two or more control segments overlap in spatial position, the driving parameters used in the overlapping area are determined according to the priority sorting.

4. The two-component adhesive dispensing control method as described in claim 1, characterized in that, Step (5) further includes a piezoelectric valve drive voltage compensation step: the actual output voltage of the piezoelectric dispensing valve drive circuit is collected in real time at a sampling frequency not lower than the first frequency, and the difference between the target voltage and the actual output voltage is taken as the voltage deviation. When the absolute value of the voltage deviation exceeds the first threshold, the PWM duty cycle is adjusted according to the ratio of the target voltage to the filter voltage, and the drive frequency is corrected by multiplying the voltage deviation by the preset frequency compensation gain coefficient according to the ratio of the voltage deviation to the target voltage. The duty cycle adjustment and the drive frequency correction are both equipped with amplitude limiting protection. When the voltage deviation is detected to be greater than the first threshold by a preset alarm multiple for a continuous period of time, a power supply abnormality alarm is triggered and dispensing is suspended.

5. The two-component adhesive dispensing control method as described in claim 1, characterized in that, The anti-adhesive cross-flow monitoring in step (3) includes the following steps: preprocessing the signals from the first pressure sensor and the second pressure sensor, including peak removal and moving average filtering; calculating the pressure difference and pressure change rate of the two component flow channels; performing pressure sensor self-diagnosis, including wire breakage detection, short circuit detection and drift detection; determining a level 1 abnormality when the pressure difference exceeds the first threshold and triggering an early warning; determining a level 2 abnormality when the pressure difference exceeds the second threshold, the absolute pressure exceeds the upper limit, or the pressure change rate exceeds the change rate threshold, closing the dispensing stop valve and stopping the servo motor; determining a level 3 abnormality when the pressure sensor experiences wire breakage, short circuit or drift fault, cutting off the main power supply and triggering an emergency stop.

6. The two-component adhesive dispensing control method as described in claim 1, characterized in that, The false alarm protection judgment with delayed confirmation in step (7) includes the following steps: When the real-time temperature exceeds the preset upper or lower threshold, an alarm delay timer is activated. A temperature exceedance alarm is only triggered if the temperature remains above the threshold for a duration exceeding the preset alarm delay time. The absolute value of the deviation between the real-time temperature and the target set temperature is calculated. When the absolute value of the deviation exceeds the preset deviation alarm threshold, a deviation alarm delay timer is activated. A deviation alarm is only triggered if the absolute value of the deviation remains above the deviation alarm threshold for a duration exceeding the preset deviation alarm delay time. During the alarm delay timer, if the temperature falls back below the threshold, the alarm delay timer is reset and considered a normal fluctuation, and no alarm is triggered. Based on the thermal inertia characteristics of each dispensing station, an alarm delay timer is independently configured for each temperature acquisition channel. The heating and temperature rise stage uses a first delay duration, and the constant temperature holding stage uses a second delay duration. The first delay duration is longer than the second delay duration. When the same channel triggers the same type of alarm more than a preset number of times within a preset time window, the delay window of the subsequent alarm is shortened to a third delay duration. The third delay duration is shorter than the second delay duration.

7. A two-component adhesive dispensing control system, applied to a two-component adhesive dispensing device, the dispensing device comprising a first component flow channel and a second component flow channel, a first servo motor and a second servo motor respectively driving a first plunger and a second plunger, an inlet stop valve group, an outlet stop valve group, a first pressure sensor and a second pressure sensor respectively installed on the first component flow channel and the second component flow channel, a piezoelectric dispensing valve, a static mixing tube, a multi-channel temperature acquisition channel, and a controller, characterized in that, The two-component adhesive dispensing control system includes: a mixing ratio control module, used to acquire mixing ratio parameters and dispensing task parameters; calculate the adhesive suction stroke distance driven by the first servo motor to the first plunger and the adhesive suction stroke distance driven by the second servo motor to the second plunger based on the mixing ratio value and the cross-sectional areas of the first and second plungers, respectively, such that the ratio of the volume of the first component adhesive sucked in by the first plunger to the volume of the second component adhesive sucked in by the second plunger is equal to the mixing ratio value; control the first and second servo motors to drive the first and second plungers to move in the retracting direction to perform adhesive suction action according to their respective adhesive suction stroke distances, and to drive the first and second plungers to move in the advancing direction to perform adhesive pushing action according to their respective adhesive pushing stroke distances, wherein the adhesive pushing stroke distance is equal to the adhesive suction stroke distance; control the opening and closing of the adhesive inlet stop valve group and the adhesive outlet stop valve group; and prevent cross-contamination. The adhesive monitoring module is used to collect flow channel pressure signals in real time through the first pressure sensor and the second pressure sensor to perform anti-adhesive cross-contamination monitoring; the temperature control module is used to collect real-time temperature data of each temperature control position in the equipment through the multi-channel temperature acquisition, wherein the temperature control position includes at least one of the first component flow channel, the second component flow channel, the static mixing tube, and the piezoelectric dispensing valve, and independently executes PID closed-loop control for each temperature acquisition channel; the piezoelectric valve dispensing control module is used to divide the dispensing process into multiple control segments based on the first derivative of the motion speed curve and the trajectory curvature of the dispensing trajectory, calculate the target piezoelectric valve drive parameters for each control segment, and realize dispensing control linked to the dispensing trajectory; the central coordination module is connected to the mixing ratio control module, the anti-adhesive cross-contamination monitoring module, the temperature control module, and the piezoelectric valve dispensing control module, and is used to coordinate the operation sequence of each module.

8. The two-component adhesive dispensing control system as described in claim 7, characterized in that, The anti-adhesive cross-contamination monitoring module includes: a signal preprocessing submodule for peak removal and moving average filtering of the pressure signal; a sensor self-diagnosis submodule for performing open circuit detection, short circuit detection, and drift detection; a multi-dimensional anomaly determination submodule for performing pressure difference anomaly determination, absolute pressure anomaly determination, and rate of change anomaly determination, and outputting the anomaly level through priority coding; and a graded protection submodule for performing first-level early warning, second-level alarm, or third-level emergency protection actions according to the anomaly level.

9. The two-component adhesive dispensing control system as described in claim 7, characterized in that, The piezoelectric valve dispensing control module includes: a trajectory segmentation submodule, used to divide the dispensing process into acceleration, constant speed, deceleration, and corner segments based on the first derivative of the motion velocity curve and the trajectory curvature of the dispensing trajectory; a segment priority management submodule, used to assign priority order to each control segment, and determine the final driving parameters of the overlapping area according to the priority order when there is overlap between control segments; a parameter calculation submodule, including a multi-parameter correlation model, used to calculate the optimal piezoelectric valve driving parameters, including driving frequency, target driving voltage, pulse width, and number of strokes, for each control segment; a multi-stroke control submodule, used to generate multi-stroke segmented driving signals and adaptively calculate the stroke interval time according to the adhesive viscosity and feeding pressure; and a voltage compensation submodule, used to perform real-time closed-loop compensation of the driving voltage at a sampling frequency not lower than a first frequency.

10. The two-component adhesive dispensing control system as described in claim 7, characterized in that, Also includes: The formula management module is used to store the mixing ratio, target glue output, temperature PID parameters of each channel, alarm threshold and piezoelectric valve drive parameters as a set of formula parameters to a non-volatile storage medium, and receive formula selection instructions to automatically load the corresponding parameters. The glue dispensing compensation module is used to calculate the deviation rate between the actual glue dispensing amount and the target glue dispensing amount after each cycle, and to compensate and correct the glue suction travel distance for the next cycle; the self-learning module is used to collect actual glue dispensing effect data, update the coefficients of the multi-parameter correlation model using the exponential weighted moving average method, and maintain a parameter database indexed by glue type and environmental conditions. The communication reporting module is used to report the anomaly level, fault logs, and predictive maintenance information to the host computer through the communication interface.

11. An electronic device, characterized in that, include: Memory; And a processor coupled to the memory, the processor being configured to execute the two-component adhesive dispensing control method as described in any one of claims 1-6 based on instructions stored in the memory.

12. A computer-readable storage medium having a computer program stored thereon, characterized in that, When executed by the processor, the program implements the two-component adhesive dispensing control method as described in any one of claims 1-6.

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