AB glue coating machine and feeding gas circuit and feeding method thereof

Abstract

The invention discloses an AB glue coating machine as well as a feeding gas circuit and a feeding method thereof, and relates to the technical field of coating machine equipment. The feeding gas circuit comprises a reversing valve which is used for determining whether compressed air is input into the feeding gas circuit or not according to the installation state of a feeding glue barrel in the feeding gas circuit; the first end of the control valve is connected with the first end of the reversing valve, the second end of the control valve is connected with the recognition circuit, the recognition circuit is used for recognizing the matching state of the feeding glue barrel and the feeding gas circuit, and the control valve is used for controlling the conduction state of compressed air according to the recognition result of the recognition circuit; the first end of the lifting air cylinder is connected with the third end of the control valve, the second end of the lifting air cylinder is connected with the pressing disc of the feeding glue barrel, and the lifting air cylinder is used for controlling the pressing disc through compressed air to convey materials in the feeding glue barrel to the AB glue coating machine. According to the invention, the accuracy and stability of material supply can be guaranteed, so that the coating quality of glue is improved.

Description

Technical Field

[0001] This application belongs to the technical field of glue coating equipment, and particularly relates to an AB glue coating machine and its feeding air path and feeding method. Background Technology

[0002] AB glue applicators are key equipment for achieving precise mixing and coating of two-component adhesives. With their automated mixing and coating capabilities, they play a vital role in fields such as electronic packaging and automotive component bonding. The ability to reliably supply materials to the AB glue applicator directly determines the quality of the adhesive coating.

[0003] Currently, when supplying materials to AB glue coating machines, to avoid mismatched A and B glue buckets during glue changes, the industry commonly uses manual verification of the correct buckets. After confirmation, the operator manually switches the air circuit valves to supply the material.

[0004] However, the existing solution relies on manual operation. If the manual verification of the glue bucket is not completed or the manual verification is performed incorrectly when the material is started, the A glue bucket and the B glue bucket will be mismatched, which will affect the glue coating quality. Summary of the Invention

[0005] This application provides an AB glue coating machine and its feeding air path and feeding method, which can improve the coating quality of the glue.

[0006] A first aspect of this application provides a material supply air path for an AB glue coating machine, comprising:

[0007] The reversing valve is used to determine whether to input compressed air into the feeding air circuit based on the installation status of the feeding rubber barrel in the feeding air circuit.

[0008] The control valve has its first end connected to the first end of the reversing valve, and its second end connected to the identification circuit. The identification circuit is used to identify the matching status between the feeding bucket and the feeding air path. The control valve is used to control the conduction status of compressed air according to the identification result of the identification circuit.

[0009] The lifting cylinder has its first end connected to the third end of the control valve and its second end connected to the pressure plate of the feeding glue tank. The lifting cylinder is used to control the pressure plate to transport the material in the feeding glue tank to the AB glue coating machine via compressed air.

[0010] A second aspect of the embodiments of this application provides an AB glue coating machine, which includes a feeding system, a metering system, a dispensing head, and a controller;

[0011] The feeding system is used to deliver the material in the feeding bucket to the metering system based on the feeding air path of the above-mentioned AB glue coating machine;

[0012] The metering system is used to mix the materials in the feeding bucket of the feeding system according to a preset ratio to obtain AB glue, and then deliver the AB glue to the dispensing head;

[0013] The dispensing head is used to apply the AB glue supplied by the metering system to the surface of the target workpiece.

[0014] The controller is used to control the working status of the feeding system, metering system, and dispensing head.

[0015] A third aspect of this application provides a feeding method for an AB glue coating machine, applied to the feeding air path of the aforementioned AB glue coating machine, the method comprising:

[0016] Determine the on / off state of the reversing valve based on the installation status of the feeding rubber tank in the feeding air circuit; the on / off state is used to control whether compressed air is input into the feeding air circuit.

[0017] Based on the identification results of the identification circuit, the working state of the control valve is determined; the identification circuit is used to identify the matching state between the feeding rubber bucket and the feeding air circuit, and the working state is used to control the conduction state of compressed air.

[0018] When the directional valve is in the on state and the control valve is in the first working state, compressed air is delivered to the lifting cylinder through the directional valve and the control valve. The lifting cylinder controls the pressure plate of the feeding glue tank to deliver the material in the feeding glue tank to the AB glue applicator. The first working state is the working state of the control valve when the feeding glue tank and the feeding air circuit are matched.

[0019] In the AB glue coating machine provided in this embodiment, a control valve and an identification circuit are introduced to cooperate in the feeding air circuit. By setting a reversing valve, the system determines whether to input compressed air into the feeding air circuit based on the installation status of the glue bucket, thus initially ensuring the basic conditions for feeding. Then, the identification circuit can identify the matching status between the glue bucket and the feeding air circuit. The control valve controls the conduction status of compressed air according to the identification result. This avoids errors that may occur with manual identification and can accurately judge the matching status of the glue bucket and control the feeding. One end of the lifting cylinder is connected to the control valve, and the other end is connected to the pressure plate of the glue bucket. Compressed air is used to control the pressure plate to transport the material to the AB glue coating machine. In this way, this design achieves hardware-level interlocking. Through the coordinated work of various components, from glue bucket installation status detection and matching identification to compressed air control and material transmission, an automated and precise feeding process is achieved. This effectively avoids the mismatch risk caused by manual operation, ensures the accuracy and stability of feeding, and thus improves the coating quality of the glue. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the material supply air path of an AB glue coating machine provided in one embodiment of this application;

[0022] Figure 2 This is a schematic flowchart of the feeding method of an AB glue coating machine provided in one embodiment of this application. Detailed Implementation

[0023] The features and exemplary embodiments of various aspects of this application will be described in detail below. To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain this application and not to limit it. For those skilled in the art, this application can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this application by illustrating examples.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element.

[0025] It should be noted that the acquisition, storage, use, and processing of data in the technical solution of this application all comply with the relevant provisions of national laws and regulations.

[0026] It should be noted that in the embodiments of this application, certain software, components, models and other existing solutions in the industry may be mentioned. These should be regarded as exemplary and are only intended to illustrate the feasibility of implementing the technical solution of this application. However, it does not mean that the applicant has used or necessarily used the solution.

[0027] To facilitate understanding of the solutions in the embodiments of this application, some contents involved in the embodiments of this application are described below:

[0028] An AB glue applicator is an industrial device specifically designed for the automated mixing and precise application of two-component adhesives (such as epoxy resin, polyurethane, silicone, etc.). Its core function is to achieve efficient, stable, and high-quality two-component adhesive applications by precisely controlling the ratio, mixing, and application process of component A (the adhesive itself) and component B (the curing agent).

[0029] In traditional AB glue applicator feeding systems, the air circuit control logic lacks an automated interlock mechanism for matching the glue bucket status. Operators must manually switch the air circuit valves after visually identifying the glue bucket markings. This process carries the risk of human error; if the glue bucket colors are mixed or the identification code is damaged, incorrectly opened air circuits will cause the mixing ratio of A and B glue to deviate from the preset parameters, directly affecting the glue curing reaction process.

[0030] If the above problems are not resolved, incorrectly proportioned adhesive will cause air bubble defects in the encapsulation layer of electronic components, reducing insulation performance. The gelation reaction of the mixed adhesive within the delivery pipeline will accelerate the aging of sealing rings and shorten the lifespan of pneumatic components. More seriously, downtime for adhesive removal caused by incorrect material feeding will disrupt continuous production, directly impacting overall equipment efficiency and product yield.

[0031] To address the aforementioned issues, this application first considers establishing an automatic identification mechanism for the glue drum matching status in the pneumatic control stage, achieving proactive protection of the material supply process through the coordinated action of pneumatic components and electrical signals. In traditional solutions, pneumatic valve switching and glue drum verification are independent operational steps, lacking interlocking control logic. To address this, this application attempts to convert the glue drum identification signal into a pneumatic control command, directly controlling the pneumatic connection state based on the glue drum matching result. Further analysis reveals that by installing a control valve with logical judgment function in the pneumatic circuit, the air supply can be immediately cut off upon detecting a glue drum error, preventing glue mixing caused by incorrect material supply. Simultaneously, a specific exhaust structure is designed to release compressed air that has entered the actuator, ensuring rapid reset of the pressure plate. By integrating the linkage between the reversing valve, control valve, and identification circuit, an integrated pneumatic system capable of automatically blocking erroneous pneumatic circuits and performing safe exhaust is ultimately formed.

[0032] In this regard, such as Figure 1 As shown, this application provides a schematic diagram of the air supply path for an AB glue coating machine. The air supply path of this AB glue coating machine may include a reversing valve 110, a control valve 120, and a lifting cylinder 130.

[0033] The reversing valve 110 is used to determine whether to input compressed air into the feeding air circuit based on the installation status of the feeding rubber tank 140 in the feeding air circuit.

[0034] In this structure, the reversing valve 110 is a valve used to control whether compressed air is input according to the installation status of the feeding hopper 140 in the feeding air circuit. The reversing valve 110 can be manually controlled based on the installation status of the feeding hopper 140. Furthermore, an electromagnetic reversing valve 110 or a pneumatic reversing valve 110 can also be used to automatically switch the air circuit on / off by detecting whether the feeding hopper 140 is properly installed, thus avoiding accidental opening of the air circuit due to human error.

[0035] In manual operation, the valve is switched on and off manually based on whether the feeding hopper 140 is installed correctly. When using the electromagnetic or pneumatic directional valve 110, the installation status of the feeding hopper 140 is monitored in real time by a position sensor. The position sensor transmits the signal to the controller, driving the valve core inside the directional valve 110 to move and automatically switch the air path on and off. When the feeding hopper 140 is correctly installed, the valve core allows compressed air to enter the feeding air path; if it is not installed or is installed abnormally, the valve core blocks the air path.

[0036] The control valve 120 has its first end connected to the first end of the reversing valve 110, and its second end connected to the identification circuit. The identification circuit is used to identify the matching status between the feeding bucket 140 and the feeding air path. The control valve 120 is used to control the conduction status of compressed air according to the identification result of the identification circuit.

[0037] In this structure, the control valve 120 refers to the valve used to control the compressed air conduction state according to the signal of the identification circuit. Specifically, it can be implemented by an electromagnetic control valve 120 or a proportional control valve 120. By receiving the matching status signal of the identification circuit, it automatically adjusts the air path opening and closing to ensure that compressed air is allowed to enter the lifting cylinder 130 only when the glue tank is matched.

[0038] The identification circuit refers to the circuit module used to detect the matching status between the supply glue bucket 140 and the supply air circuit. Specifically, it can be implemented using a photoelectric sensor, radio frequency identification module, or color recognition module. By collecting the color, identification code, or physical feature information of the glue bucket, it determines whether the type of glue bucket meets the current supply air circuit requirements, thus preventing mismatch between glue bucket A and glue bucket B.

[0039] The control valve 120 controls the flow of compressed air based on a matching status signal fed back from the identification circuit. The identification circuit uses a photoelectric sensor or color sensor to collect the color, identification code, or physical characteristics of the glue bucket, compares it with preset parameters, and outputs a matching status signal to the control valve 120. When the glue bucket type matches the feeding requirements, the identification circuit triggers the control valve 120 to open, and compressed air enters the lifting cylinder 130 through the control valve 120; if the glue bucket is mismatched, the control valve 120 remains closed, blocking the air path. The electromagnetic control valve 120 switches the valve core by energizing or de-energizing the coil, while the proportional control valve 120 adjusts its switch according to the signal strength to precisely control the air pressure and flow rate. This structure, through an electrical linkage mechanism, ensures that feeding is initiated only when the feeding glue bucket 140 matches the feeding air path, preventing the mixing ratio from failing due to misuse of glue bucket A and bucket B.

[0040] The lifting cylinder 130 has its first end connected to the third end of the control valve 120 and its second end connected to the pressure plate 141 of the feeding glue tank 140. The lifting cylinder 130 is used to control the pressure plate 141 to transport the material in the feeding glue tank 140 to the AB glue coating machine by means of compressed air.

[0041] In this structure, the lifting cylinder 130 refers to the actuator that drives the pressure plate 141 of the feeding glue tank 140 through compressed air. Specifically, it can be implemented by a double-acting cylinder or a single-acting cylinder. The air pressure pushes the pressure plate 141 of the feeding glue tank 140 to press down the glue tank material, so as to realize the stable delivery of the material to the AB glue coating machine and avoid the deviation of the feeding ratio caused by manual switching of the air circuit.

[0042] The lifting cylinder 130 uses compressed air to drive the pressure plate 141 of the feeding hopper 140 to convey materials. After the control valve 120 is turned on, compressed air enters the rodless chamber (double-acting cylinder) or spring chamber (single-acting cylinder) of the cylinder through the air passage, pushing the piston to drive the pressure plate 141 to press down on the hopper. The double-acting cylinder achieves precise lifting and lowering of the pressure plate 141 through bidirectional air pressure control, while the single-acting cylinder relies on the synergistic effect of spring reset and air pressure pressing. The pressure plate 141 and the feeding hopper 140 are sealed together, and the continuous application of air pressure maintains uniform material extrusion, avoiding pressure fluctuations caused by manual operation.

[0043] This application achieves automated verification and air circuit linkage of the installation and matching status of the glue supply tank 140 through the coordinated control of the reversing valve 110, the control valve 120 and the identification circuit. When the glue supply tank 140 is not installed correctly or the type is mismatched, the air circuit is automatically blocked, eliminating the risk of glue tank mismatch that may be introduced by manual operation, thereby ensuring the stability of AB glue coating quality.

[0044] As an example, the air supply route of the AB glue applicator consists of a reversing valve 110, a control valve 120, and a lifting cylinder 130. The reversing valve 110 is installed at the air inlet to control the input of compressed air. The control valve 120 is located downstream of the reversing valve 110, with its first end connected to the first end of the reversing valve 110 and its second end connected to an identification circuit. The identification circuit includes a color sensor and / or a Radio Frequency Identification (RFID) reader for detecting the color of the glue container and / or its identification code. The lifting cylinder 130 is installed above the glue container 140, with its first end connected to the third end of the control valve 120 and its second end connected to a pressure plate 141.

[0045] During use, first check the installation status of the feeding hopper 140. If the installation is successful, the reversing valve 110 opens, allowing compressed air to enter the feeding air circuit. The identification circuit then activates, detecting the hopper information via a color sensor and RFID reader. If the identification result shows that the feeding hopper 140 matches the air circuit, the control valve 120 opens, allowing compressed air to enter the lifting cylinder 130. The piston of the lifting cylinder 130 pushes the pressure plate 141 down, squeezing and conveying the material in the hopper to the AB glue applicator. If the identification result shows a mismatch, the control valve 120 remains closed, preventing compressed air from entering the lifting cylinder 130, thus avoiding incorrect feeding.

[0046] In this embodiment, a control valve 120 is introduced in conjunction with an identification circuit. By setting a reversing valve 110, the system determines whether to input compressed air into the supply air path based on the installation status of the supply glue bucket 140, thus initially ensuring the basic conditions for material supply. Then, the identification circuit can identify the matching status between the supply glue bucket 140 and the supply air path. The control valve 120 controls the flow of compressed air based on this identification result, avoiding errors that may occur with manual identification and accurately judging the glue bucket matching status and controlling the material supply. One end of the lifting cylinder 130 is connected to the control valve 120, and the other end is connected to the pressure plate 141 of the supply glue bucket 140. Compressed air is used to control the pressure plate 141 to transport the material to the AB glue applicator. This design achieves hardware-level interlocking. Through the coordinated work of various components, from glue bucket installation status detection and matching identification to compressed air control and material transmission, an automated and precise material supply process is achieved. This effectively avoids the mismatch risk caused by manual operation, ensuring the accuracy and stability of the material supply, thereby improving the coating quality of the glue.

[0047] In some of the above-mentioned solutions in this application, the material supply air path is controlled by the reversing valve 110 and the control valve 120. However, in actual application, when the material supply hopper 140 is not matched with the material supply air path, the control valve 120 cannot actively block the transmission of compressed air, which may cause the material in the wrong hopper to be forcibly transported to the AB glue applicator, resulting in abnormal glue ratio.

[0048] In this regard, this application further proposes that when the identification result of the identification circuit indicates that the feeding glue tank 140 is matched with the feeding air circuit, the control valve 120 is in a first working state; in the first working state, the first end of the control valve 120 is connected to the third end of the control valve 120, and compressed air enters the lifting cylinder 130 through the control valve 120.

[0049] If the identification result of the identification circuit indicates that the feeding glue tank 140 and the feeding air circuit are mismatched, the control valve 120 is in the second working state; in the second working state, the first end of the control valve 120 is disconnected from the third end of the control valve 120, and the compressed air is blocked by the control valve 120.

[0050] In this embodiment, the control valve 120 can be a two-position three-way solenoid valve. A two-position three-way solenoid valve is an electromagnetic control valve 120 with two operating states and three channel interfaces. It uses electromagnetic force to drive the valve core to switch positions, thereby controlling the flow of fluid media between different channels.

[0051] The opening and closing functions of the control valve 120 are achieved through an internal electromagnetic drive mechanism, which receives the level signal output by the identification circuit. In the first operating state, the electromagnetic drive mechanism moves the valve core to the open position, forming a continuous air passage from the reversing valve 110 to the lifting cylinder 130. The inner diameter of the passage is controlled within 2-3 mm to maintain air pressure stability. In the second operating state, the electromagnetic drive mechanism pushes the valve core to close the air passage. The valve core sealing surface is made of fluororubber to ensure the blocking effect.

[0052] Specifically, when the identification circuit determines that the glue bucket matches based on its color or identification code, it outputs a high-level signal to the control valve 120, triggering the first operating state. Compressed air flows sequentially through the reversing valve 110, the first end of the control valve 120, and finally drives the lifting cylinder 130 to push the pressure plate 141 down. If the identification circuit detects that the difference between the glue bucket color and the preset reference color exceeds 5% or the identification code verification fails, it outputs a low-level signal, and the control valve 120 switches to the second operating state. At this time, the valve core blocks the air path, effectively preventing incorrect glue bucket material from entering the glue applicator.

[0053] As an example, the recognition circuit includes a color sensor, which collects color information from the feeding bucket 140 and compares it with a preset matching color to obtain a recognition result, thereby outputting a level signal corresponding to the recognition result to the control valve 120.

[0054] When the identification result indicates that the feeding glue tank 140 matches the feeding air circuit, the control valve 120 is in the first working state. In the first working state, the first end and the third end of the control valve 120 are connected, and compressed air enters the lifting cylinder 130 through the control valve 120. The lifting cylinder 130 drives the pressure plate 141 to descend, conveying the material in the glue tank to the AB glue applicator.

[0055] When the identification result indicates a mismatch between the supply glue bucket 140 and the supply air circuit, the control valve 120 enters a second operating state. In the second operating state, the first and third ends of the control valve 120 are disconnected, and the compressed air is blocked by the control valve 120. The lifting cylinder 130 cannot drive the pressure plate 141 to descend, preventing material from the incorrect glue bucket from being conveyed to the AB glue applicator.

[0056] This embodiment achieves automatic identification and control of the glue supply bucket 140. It avoids errors that may occur with manual identification and prevents mismatch between glue bucket A and glue bucket B. This improves the feeding accuracy and efficiency of the AB glue applicator, ensuring the stability of the glue coating quality. Simultaneously, the automated identification and control process reduces manual operation and lowers the workload of operators.

[0057] In some of the solutions described above in this application, when the feeding hopper 140 is not matched with the feeding air circuit, the control valve 120 blocks the compressed air from entering the lifting cylinder 130. However, at this time, there may still be residual compressed air inside the lifting cylinder 130, which may cause the pressure plate 141 to fail to reset quickly or generate pressure residue, affecting the safety of the equipment and the accuracy of feeding.

[0058] In this regard, this application further proposes that the feed gas path also includes:

[0059] One-way valve 150, the input end of which is connected to the fourth end of control valve 120, is used to discharge compressed air from lifting cylinder 130 when control valve 120 is in the second working state.

[0060] In this embodiment, the input end of the one-way valve 150 is sealed to the fourth end of the control valve 120 via an air passage, while the output end is connected to the external environment. The one-way valve 150 has an internal spring structure. When the control valve 120 is in its second operating state, the third and fourth ends of the control valve 120 are connected, and the internal air pressure of the lifting cylinder 130 pushes the spring of the one-way valve 150 to deform, causing the valve body to open the exhaust passage. For example, the opening pressure of the one-way valve 150 can be set to 0.05-0.2 MPa to ensure that exhaust is automatically triggered when the residual air pressure in the cylinder reaches a set threshold. The air passage connection between the fourth end of the control valve 120 and the input end of the one-way valve 150 is located at an internal air passage branch node of the control valve 120. This branch node forms a closed loop with the lifting cylinder 130 when the control valve 120 is in its second operating state.

[0061] Specifically, when the identification circuit detects a mismatch between the feeding hopper 140 and the control valve 120, the control valve 120 switches to its second operating state. At this time, the air passages at the first and third ends of the control valve 120 are disconnected. The compressed air remaining inside the lifting cylinder 130 flows through the third to the fourth end of the control valve 120, and then to the input end of the one-way valve 150. When the air pressure exceeds the spring preload of the one-way valve 150, the valve core moves to form an exhaust passage. After the compressed air is discharged through the one-way valve 150, the internal pressure of the lifting cylinder 130 decreases, and the pressure plate 141 returns to its initial position. This process enables active release of air pressure within the cylinder, eliminating malfunctions of the pressure plate 141 caused by residual air pressure.

[0062] As an example, the feed air circuit also includes a one-way valve 150. The input end of the one-way valve 150 is connected to the fourth end of the control valve 120. When the control valve 120 is in its second operating state, the one-way valve 150 discharges the compressed air from the lifting cylinder 130. Specifically, the one-way valve 150 can be a spring-loaded one-way valve 150, which includes a valve body, a valve core, and a spring. The valve body has a flow channel, and the valve core is pressed against the valve seat by the spring. When the control valve 120 is in its second operating state, the compressed air in the lifting cylinder 130 enters the flow channel through the input end of the one-way valve 150. The pressure overcomes the spring force, causing the valve core to move away from the valve seat, and the compressed air is discharged from the outlet. When the pressure decreases, the spring pushes the valve core back against the valve seat to prevent air backflow.

[0063] This embodiment enables the rapid discharge of compressed air from the lifting cylinder 130 when the control valve 120 is in its second operating state. This avoids potential safety hazards caused by compressed air remaining in the lifting cylinder 130 and also facilitates subsequent replacement of the matching supply tank 140. Furthermore, the one-way valve 150 ensures that the compressed air can only flow in one direction, preventing external air from flowing back into the lifting cylinder 130 and ensuring the system's sealing and reliability.

[0064] In some of the solutions described above in this application, the feeding air path determines the matching status of the glue bucket through an identification circuit. However, the specific implementation method of the identification circuit is not clear, and there is still a risk of misjudgment in manual operation, which cannot ensure the accuracy of the glue bucket information identification.

[0065] In this regard, this application further proposes an identification circuit including a target sensor;

[0066] The output of the target sensor is connected to the second end of the control valve 120. The target sensor is used to determine the recognition result based on the acquired target information.

[0067] The target information includes at least one of the following: the color of the glue bucket and the glue bucket identification code.

[0068] In this embodiment, the target sensor may integrate a color recognition module or an encoding reading module. The color recognition module acquires color data of the glue bucket surface through optical elements, while the encoding reading module obtains the glue bucket identification code through radio frequency or image scanning. The target sensor and the control valve 120 are connected via an electrical signal transmission path, which may include a signal amplification circuit or an analog-to-digital conversion unit. The target sensor has built-in preset parameters, including a preset matching degree threshold or a valid identification code database.

[0069] Specifically, when the target sensor is a color sensor, its internal photodiode array receives the light signal reflected from the surface of the glue bucket. The light signal is filtered and converted into RGB values. The color difference between the RGB values ​​and a preset reference color is calculated to obtain the color matching degree. If the color matching degree is greater than the preset matching degree threshold, the color is considered matched. When the target sensor is an RFID reader, its scanning head captures an image of the glue bucket tag. The decoding algorithm extracts the encoded information and compares it with the pre-stored code in the database. If a match is successful, a valid identification signal is generated. The electrical signal output by the target sensor directly drives the electromagnetic coil of the control valve 120, causing the valve core to switch to the corresponding working position. For example, when the color matching degree reaches 95% or the identification code verification is successful, the control valve 120 switches to the conducting state; when the color difference exceeds 5% or the identification code is invalid, the control valve 120 remains in the blocking state. This implementation method, through quantitative parameter setting, makes the glue bucket identification process repeatable and verifiable.

[0070] As an example, the target sensor could be a color sensor. The color sensor is installed directly in front of the feeding hopper 140 to detect the color of the feeding hopper 140 entering the feeding air path. The color sensor collects color information from the surface of the hopper and converts the collected color information into an electrical signal, which is then output to the control valve 120. The control valve 120 determines whether the color of the hopper matches a preset color based on the received electrical signal, thereby determining whether the hopper is compatible with the feeding air path.

[0071] Furthermore, the target sensor can also be an RFID reader. The RFID reader is installed directly in front of the feeding hopper 140 and is used to scan the barcode or QR code on the hopper. The RFID reader reads the hopper's identification code information and converts it into an electrical signal, which is then output to the control valve 120. The control valve 120 determines whether the identification code is valid based on the received electrical signal, thereby determining whether the feeding hopper 140 matches the feeding air path.

[0072] Therefore, by collecting the color or identification code information of the glue bucket through the target sensor, it is possible to automatically identify whether the glue bucket matches the feeding air path without manual judgment, thus improving the accuracy and efficiency of identification.

[0073] This embodiment achieves automatic identification of the matching status between the glue supply tank 140 and the supply air path, avoiding errors that may occur with manual judgment and improving the reliability of the AB glue applicator's material supply. Simultaneously, the automatic identification method also improves supply efficiency and reduces the workload of manual operation. Furthermore, this solution has a simple structure, is easy to implement, and has good practicality.

[0074] In some of the solutions described above in this application, the identification circuit is directly connected to the control valve 120 through the target sensor to achieve air circuit control. However, when faced with complex identification scenarios such as the color of the glue bucket or the identification code, the direct output signal of the sensor may not be able to meet the requirements of multi-condition judgment, resulting in insufficient driving accuracy of the control valve 120.

[0075] In this regard, this application further proposes an identification circuit including a target sensor and a controller;

[0076] The output of the target sensor is connected to the first end of the controller. The target sensor is used to determine the identification result based on the collected target information. The target information includes at least one of the following: the color of the glue bucket and the glue bucket identification code.

[0077] The second end of the controller is connected to the second end of the control valve 120. The controller is used to output a drive signal to the control valve 120 to indicate the working state of the control valve 120 based on the identification result.

[0078] In this embodiment, the controller can be a programmable logic controller (PLC), which is a digital computing and operating electronic system designed specifically for industrial environments. It executes instructions such as logical operations, sequential control, timing, counting, and arithmetic operations through programmable memory, and controls various types of machinery or production processes through digital or analog input and output.

[0079] The target sensor can be a color sensor or an RFID reader, used to collect color data or printed identification code data from the surface of the glue bucket. The collected data is compared with stored reference information using preset matching rules; for example, the RGB values ​​collected by the color sensor are compared with a preset reference color, or the identification code is matched with a coding sequence in a database. The controller generates a high-level or low-level drive signal based on the comparison result and transmits it to the solenoid coil of the control valve 120 via an electrical interface. The control valve 120 switches its internal air passage based on the drive signal, thus controlling the flow of compressed air.

[0080] Specifically, after the glue bucket is installed, the color sensor collects color data from the surface of the glue bucket, converts the color data into chromaticity values, and matches them against the preset standard chromaticity range of glue bucket A. If the chromaticity value is within the standard range, the color sensor outputs a high level (i.e., logic TRUE) to the controller, which then outputs a high-level drive signal to the control valve 120. After the solenoid coil of the control valve 120 is energized, it switches to the conducting state, and compressed air enters the lifting cylinder 130 to push the pressure plate 141 down. If the chromaticity value is outside the range, the color sensor outputs a low level (i.e., logic FALSE) to the controller, which then outputs a low-level drive signal to the control valve 120, keeping the control valve 120 in the blocked state.

[0081] As an example, the identification circuit includes a target sensor and a controller. The output of the target sensor is connected to the first terminal of the controller. The target sensor acquires target information from the feeding bucket 140, including the bucket's color or identification code. For example, the target sensor could be a color sensor, acquiring color information from the bucket's surface; or an RFID reader, scanning a barcode or QR code on the bucket.

[0082] When the color sensor or RFID reader detects the correct glue can, it outputs a high level (i.e., logic TRUE) to the controller. When the color sensor or RFID reader does not detect the glue can, or detects the wrong glue can, it outputs a low level (i.e., logic FALSE) to the controller.

[0083] The second terminal of the controller is connected to the second terminal of the control valve 120. Based on the identification result, the controller outputs a drive signal to the control valve 120. When the identification result is a correct glue container, the controller outputs a high-level signal, driving the control valve 120 to open; when the identification result is an incorrect glue container, the controller outputs a low-level signal, driving the control valve 120 to close.

[0084] This embodiment achieves automatic identification and control of the glue supply bucket 140. It avoids errors that may occur with manual identification, improving the accuracy and reliability of the AB glue applicator's material supply. Simultaneously, the automatic control of the control valve 120 via the controller simplifies the operation process and improves production efficiency. Furthermore, this solution allows for flexible setting of identification rules to adapt to different types of glue buckets, demonstrating good versatility.

[0085] In some of the solutions described above in this application, when the supply glue tank 140 is mismatched with the supply air circuit, the control valve 120 blocks the compressed air from entering the lifting cylinder 130. However, there is a lack of a mechanism to promptly remind the operator, which may result in the incorrect supply status not being detected in time, potentially delaying processing and affecting the continuity of production and the quality of glue coating.

[0086] In this regard, this application further proposes that the feed gas path also includes:

[0087] An alarm device is provided, with its input terminal connected to the third terminal of the controller. The alarm device is used to trigger an alarm operation on the feeding glue tank 140 when the identification result indicates a mismatch between the feeding glue tank 140 and the feeding air path.

[0088] In this embodiment, the alarm device receives a trigger signal through the third terminal of the controller, and the trigger signal is generated by the controller based on the recognition result. The alarm operation includes at least one of displaying the glue bucket error information and a buzzer alarm. The alarm device can integrate a human-machine interface and a buzzer; the human-machine interface is used to display the glue bucket error information, and the buzzer is used to emit an audible alarm. The connection between the controller and the alarm device can be wired communication or wireless signal transmission, for example, driving the alarm device by outputting high and low levels through an I / O port.

[0089] Specifically, after the target sensor collects the color or identification code of the glue bucket, if it determines that the glue bucket 140 is mismatched with the supply air path, the controller sends a drive signal to the control valve 120 to switch it to the second working state, and simultaneously sends a trigger signal to the alarm device through the third terminal. Upon receiving the trigger signal, the alarm device immediately activates the preset alarm mode. For example, the human-machine interface displays the text "Glue Bucket Error," a red warning light flashes, and a buzzer sounds at a fixed frequency. Operators can promptly replace the correct glue bucket according to the alarm prompt, avoiding incorrect glue supply that could lead to abnormal glue mixing ratios. Furthermore, the alarm device can be set with a delayed shutdown function, automatically stopping the alarm after the glue bucket is replaced, or sending a stop signal after the controller detects that the matching state has been restored. Through the linkage between the alarm operation and the air path interruption, the incorrect supply state is double-intercepted, improving reliability.

[0090] As an example, the alarm device may include a human-machine interface and a buzzer. After receiving the identification result sent by the target sensor, if the identification result indicates that the feeding glue tank 140 is mismatched with the feeding air path, the controller sends an alarm signal to the alarm device. Upon receiving the alarm signal, the alarm device displays the text "Glue Tank Error" on the human-machine interface, and the buzzer sounds an alarm to promptly remind the operator to replace the correct feeding glue tank 140.

[0091] Furthermore, the alarm device may also include an indicator light. When the glue supply hopper 140 is mismatched with the air supply path, the controller will control the indicator light to flash red to visually alert the operator. The indicator light can be installed in a conspicuous location on the AB glue applicator to ensure that the operator can promptly detect any abnormalities.

[0092] Therefore, by combining multiple alarm methods, it is possible to effectively prevent operators from misoperating or ignoring errors in the glue bucket, thereby improving the reliability and safety of the material supply process.

[0093] This embodiment enables timely detection and alerting of operators to mismatches between the glue supply hopper 140 and the air supply path, preventing product quality issues caused by the use of incorrect glue hoppers. Simultaneously, the combination of multiple alarm methods enhances alarm effectiveness and reduces errors caused by human negligence. This automated alarm mechanism significantly improves the reliability and safety of the AB glue coating machine's feeding process, helping to ensure the stability of coating quality.

[0094] In some of the above-mentioned solutions of this application, the material supply air circuit controls the pressure plate 141 to transport materials through the lifting cylinder 130. When the pressure plate 141 moves to the bottom of the material supply barrel 140, the compressed air remaining in the lifting cylinder 130 cannot be discharged in time, resulting in the continuous existence of internal pressure in the cylinder, which may hinder the reset of the pressure plate 141 or affect the stability of subsequent material supply operations.

[0095] In this regard, this application further proposes that the second end of the lifting cylinder 130 is also connected to the second end of the reversing valve 110;

[0096] When the pressure plate 141 of the feeding hopper 140 moves to the bottom of the feeding hopper 140, the compressed air in the lifting cylinder 130 is discharged through the second end of the reversing valve 110.

[0097] In this embodiment, the second end of the lifting cylinder 130 is connected to the second end of the reversing valve 110 through an air passage to form a compressed air discharge path, and the second end of the reversing valve 110 is in communication with the external environment. The air pressure inside the lifting cylinder 130 is released to the outside through the second end of the reversing valve 110, and the pressure inside the cylinder returns to zero.

[0098] Specifically, when the pressure plate 141 is driven downwards by the lifting cylinder 130 to the bottom limit position of the rubber barrel, the second end of the reversing valve 110 connects with the second end of the lifting cylinder 130, allowing the compressed air inside the cylinder to be directly discharged into the atmosphere through the second end of the reversing valve 110. This process eliminates pressure buildup inside the cylinder caused by residual compressed air, allowing the pressure plate 141 to quickly reset or remain stationary. Using the second end of the reversing valve 110 as the exhaust channel eliminates the need for an additional exhaust valve, simplifying the air path structure.

[0099] As an example, the second end of the lifting cylinder 130 is connected to the second end of the reversing valve 110. When the pressure plate 141 of the feeding hopper 140 moves to the bottom of the feeding hopper 140, the compressed air in the lifting cylinder 130 can be discharged through the second end of the reversing valve 110. Specifically, the piston rod of the lifting cylinder 130 is connected to the pressure plate 141 of the feeding hopper 140. When the pressure plate 141 pushes the material in the hopper to the bottom, the piston rod is in its maximum extended state. At this time, the compressed air in the lifting cylinder 130 is discharged through the pipeline connected to the second end of the reversing valve 110.

[0100] This embodiment achieves the function of automatically venting residual compressed air from the lifting cylinder 130 when the material in the feeding hopper 140 is exhausted. This avoids damage to the seals caused by compressed air remaining in the cylinder for extended periods, thus extending the cylinder's service life. Simultaneously, timely venting also facilitates the replacement of the feeding hopper 140, improving the equipment's material changing efficiency. Furthermore, this solution prevents malfunctions caused by residual pressure in the cylinder, enhancing the safety and reliability of the equipment operation.

[0101] Based on the material supply air path of the AB glue coating machine provided in this application, this application also provides a specific embodiment of the AB glue coating machine.

[0102] The AB glue applicator includes a feeding system, a metering system, a dispensing head, and a controller.

[0103] The feeding system is used to deliver the material in the feeding bucket to the metering system based on the feeding air path of any of the above-mentioned AB glue coating machines;

[0104] The metering system is used to mix the materials in the feeding bucket of the feeding system according to a preset ratio to obtain AB glue, and then deliver the AB glue to the dispensing head;

[0105] The dispensing head is used to apply the AB glue supplied by the metering system to the surface of the target workpiece.

[0106] The controller is used to control the working status of the feeding system, metering system, and dispensing head.

[0107] In this embodiment, the feeding system automatically controls the supply and demand of compressed air through a reversing valve and a control valve in the feeding air circuit. The reversing valve determines whether to input compressed air based on the installation status of the glue bucket, and the control valve adjusts the air circuit conduction state based on the glue bucket matching result of the identification circuit. The metering system controls the mixing ratio of glue A and glue B through preset proportional parameters, and a dynamic stirring mechanism is set in the mixing chamber to ensure material uniformity. The dispensing head adopts a multi-channel nozzle structure, the nozzle opening is adjusted by a servo motor, and the dispensing path is driven by a motion mechanism to achieve multi-axis linkage.

[0108] Specifically, when the glue bucket is installed in the air supply line, the reversing valve detects the bucket's position signal and initiates compressed air input. The identification circuit collects the bucket's markings via a color sensor. If the bucket's color matches a preset benchmark, the control valve switches to its first operating state, allowing compressed air to enter the lifting cylinder and drive the pressure plate downwards to deliver the material to the metering system. The metering system controls the flow rates of adhesive A and adhesive B according to preset ratio parameters. A screw agitator in the mixing chamber homogenizes the mixed adhesive solution at 1200 rpm. The mixed adhesive A and B are then delivered to the dispensing head via a high-pressure hose. The dispensing head completes the coating operation under the influence of a three-axis motion platform (XYZ) according to preset trajectory parameters. The controller collects real-time pressure data from the air supply line, flow data from the metering system, and position data from the dispensing head. Using a PID algorithm, it dynamically adjusts the control valve opening, metering pump speed, and servo motor torque to stabilize the system operating pressure within the range of 0.6-0.8 MPa and control the flow error within ±1.5%. When the identification circuit detects an abnormal color in the glue bucket, the control valve switches to the second working state to block the air path. At the same time, the controller triggers an audible and visual alarm and suspends the operation of the metering system and the dispensing head.

[0109] In this embodiment, the feeding system automatically completes the identification of glue buckets and material conveying through the feeding air path, the metering system realizes the accurate mixing ratio of AB glue, the dispensing head ensures the uniformity of the two-component glue solution, and the controller effectively avoids the problem of glue bucket mismatch caused by manual operation by coordinating the action sequence of the three subsystems, thus ensuring the stability of the glue mixing ratio and the continuity of the coating operation.

[0110] Based on the material supply air path of the AB glue coating machine provided in this application, correspondingly, this application also provides a specific embodiment of the material supply method for the AB glue coating machine.

[0111] like Figure 2 The diagram shows a flow chart of a feeding method for an AB glue coating machine. This feeding method is applied to the feeding air path of any of the aforementioned AB glue coating machines. The feeding method may include the following steps S210 to S230:

[0112] S210, determine the on / off state of the reversing valve according to the installation status of the feeding rubber barrel in the feeding air circuit; the on / off state is used to control whether compressed air is input into the feeding air circuit.

[0113] In this step, the feeding air path is a gas channel system built to realize the material conveying in the feeding bucket. The material is moved by the flow of compressed air in the air path, and the material in the feeding bucket is conveyed to the designated position.

[0114] The feeding hopper is a container used to hold AB glue materials. It is a material storage component in the entire feeding system, and its interior contains the glue material that needs to be conveyed to the AB glue applicator.

[0115] A directional control valve is a valve that changes the direction of gas flow. Its on / off state (open or closed) is determined by the installation status of the feed hopper, thus controlling whether compressed air is input into the feed air circuit. When the directional control valve is in the open state, compressed air can pass through it into the feed air circuit; when it is in the closed state, compressed air cannot pass through and therefore cannot enter the feed air circuit.

[0116] The on / off state of a reversing valve refers to one of two states: open (allowing gas to pass) or closed (preventing gas from passing). This state is determined by the installation state of the feeding hopper and is used to control whether compressed air can enter the feeding air circuit.

[0117] The purpose of the feeding air path is to transport materials from the feeding bucket, driven by the flow of compressed air. The reversing valve, as a component controlling the direction of gas flow, has its on / off state determined by the installation status of the feeding bucket. Only correct installation ensures a smooth subsequent material conveying process. When installed correctly, compressed air enters the air path to provide power for material conveying; incorrect installation prevents compressed air from entering, avoiding abnormal material conveying or equipment damage caused by improper installation. This achieves precise control over the compressed air input to the feeding air path.

[0118] Specifically, first check the installation status of the feeding cartridge in the feeding air circuit, and determine whether the reversing valve is open or closed based on this installation status. If the feeding cartridge is installed correctly, the reversing valve is open, and compressed air can enter the feeding air circuit; otherwise, it is closed, and compressed air cannot enter.

[0119] S220 determines the operating state of the control valve based on the identification result of the identification circuit; the identification circuit is used to identify the matching state between the feeding bucket and the feeding air circuit, and the operating state is used to control the conduction state of compressed air.

[0120] In this step, the control valve is used to control the flow of compressed air. Its operating state is determined by the identification result of the identification circuit. The control valve will only be in its first operating state when the feeding hopper is matched with the feeding air circuit, thereby allowing compressed air to pass through in a certain manner to realize subsequent material conveying operations.

[0121] An identification circuit is a circuit system capable of identifying the matching status between the supply glue tank and the supply air circuit. It determines whether the currently installed supply glue tank matches the supply air circuit by detecting relevant signals or parameters, thereby determining the operating status of the control valve.

[0122] The compatibility between the feeding buckets and the feeding air circuits varies. Each feeding air circuit is responsible for feeding material to one type of feeding bucket. For example, the first feeding air circuit is responsible for feeding material to bucket A, and the second feeding air circuit is responsible for feeding material to bucket B. The identification circuit can accurately determine the matching status by detecting relevant signals or parameters. The control valve adjusts its working state according to this result. When matched, it is in the first working state, allowing compressed air to pass through in a specific manner to prepare for subsequent material feeding; when mismatched, it adjusts to other states to prevent incorrect feeding and ensure the stability and accuracy of the entire feeding system.

[0123] Specifically, the identification circuit detects the matching status between the feeding glue tank and the feeding air circuit, determines whether they match based on the detected signals or parameters, and then feeds back the identification result to determine the operating state of the control valve. The control valve is only in its first operating state when the two are matched.

[0124] S230, when the reversing valve is in the on state and the control valve is in the first working state, compressed air is delivered to the lifting cylinder through the reversing valve and the control valve. The lifting cylinder controls the pressure plate of the feeding glue tank to deliver the material in the feeding glue tank to the AB glue coating machine. The first working state is the working state of the control valve when the feeding glue tank and the feeding air circuit are matched.

[0125] In this step, the first working state is when the control valve is matched with the material supply tank and the material supply air circuit. In this state, the compressed air can pass through the control valve according to the design requirements, thereby driving the lifting cylinder to move and realize the process of material conveying to the AB glue coating machine.

[0126] A lifting cylinder is an actuator that converts the pressure energy of compressed air into mechanical energy. When the reversing valve is in the open state and the control valve is in the first working state, compressed air is delivered to the lifting cylinder through the reversing valve and the control valve. The lifting cylinder then controls the action of the pressure plate of the feeding glue tank, squeezing and conveying the material in the feeding glue tank to the AB glue coating machine.

[0127] The pressure plate is installed inside the feeding hopper and connected to the lifting cylinder. Driven by the lifting cylinder, the pressure plate can move up and down inside the feeding hopper, applying pressure to squeeze the material out of the hopper and thus conveying the material.

[0128] In this system, the directional valve is in operation and the control valve is in its first working state, ensuring that compressed air can smoothly enter and pass through according to design requirements, providing power to the lifting cylinder. The lifting cylinder, as the actuator, converts the pressure energy of the compressed air into mechanical energy, and applies pressure to the material in the feeding barrel by controlling the up-and-down movement of the pressure plate, achieving material extrusion and conveying, and ultimately accurately delivering the material to the AB glue applicator, completing the entire feeding process.

[0129] Specifically, when the reversing valve is in the open state and the control valve is in the first working state, compressed air is delivered to the lifting cylinder through the reversing valve and the control valve in sequence. The lifting cylinder actuates, causing the pressure plate installed inside the feeding glue tank to move up and down, squeezing and conveying the material in the feeding glue tank to the AB glue coating machine.

[0130] This embodiment introduces a control valve and an identification circuit working together. By setting a reversing valve, the system determines whether to input compressed air into the supply air path based on the installation status of the glue bucket, thus initially ensuring the basic conditions for material supply. Then, the identification circuit identifies the matching status between the glue bucket and the supply air path. The control valve controls the compressed air flow based on this identification result, avoiding errors that may occur with manual identification and accurately judging the glue bucket matching status and controlling the supply. One end of the lifting cylinder is connected to the control valve, and the other end is connected to the pressure plate of the glue bucket. Compressed air is used to control the pressure plate to transport the material to the AB glue applicator. This design achieves hardware-level interlocking. Through the coordinated work of various components, from glue bucket installation status detection and matching identification to compressed air control and material transmission, an automated and precise supply process is achieved. This effectively avoids the mismatch risks caused by manual operation, ensuring the accuracy and stability of the supply, thereby improving the coating quality of the glue.

[0131] In some of the solutions described above in this application, when the supply hopper and the supply air circuit are mismatched, the control valve blocks compressed air from entering the lifting cylinder. However, at this time, some compressed air may remain inside the lifting cylinder, causing the pressure plate to not completely stop moving, and there is still a risk of incorrect supply. In addition, there is no active pressure relief mechanism after the air circuit is blocked, and the residual air pressure in the cylinder may affect the accuracy of subsequent hopper replacement operations.

[0132] In this regard, this application further proposes that, following S220, the feeding method of the AB glue coating machine may also include:

[0133] When the control valve is in the second working state, the compressed air in the lifting cylinder is discharged through the check valve; the second working state is the working state of the control valve when the feeding barrel and the feeding air circuit are mismatched.

[0134] In this embodiment, the input end of the one-way valve is connected to the fourth end of the control valve, forming an exhaust passage when the control valve is in the second working state. When the control valve blocks the air source, the compressed air in the lifting cylinder is discharged outward through the one-way valve, realizing the active release of air pressure in the cylinder.

[0135] Specifically, when the identification circuit detects that the color difference between the glue bucket and the preset reference color exceeds 5% or the glue bucket identification code verification fails, it determines that the supply glue bucket and the supply air circuit are mismatched. At this time, the control valve switches to the second working state, blocks the air source input, and connects the lifting cylinder and the one-way valve. At this time, the residual air pressure in the cylinder is discharged outward through the one-way valve at a flow rate of 0.5MPa, ensuring that the pressure plate completely stops moving within 3 seconds.

[0136] As an example, when the color sensor detects a deviation between the surface color of the glue supply tank and the preset reference color, it determines that the glue supply tank and the air supply circuit are mismatched. The control valve switches to the second working state, blocking the compressed air passage between the air source pipeline and the lifting cylinder. At this time, the residual compressed air inside the lifting cylinder is discharged outward through the exhaust channel of the one-way valve, and the pressure plate returns to its initial position.

[0137] This embodiment automatically cuts off the air supply and releases residual pressure in the cylinder when an abnormal glue bucket mismatch is detected, effectively preventing material from the wrong glue bucket from entering the glue coating system. It avoids glue mixing errors caused by human misjudgment and ensures the accuracy of AB glue mixing ratio control.

[0138] In some of the solutions described above in this application, when the supply glue bucket and the supply air circuit are mismatched, the control valve blocks the compressed air from entering the lifting cylinder. However, there is a lack of a mechanism to promptly remind the operator, which may lead to the failure to detect the incorrect supply status in time, potentially delaying the handling and affecting the continuity of production and the quality of glue coating.

[0139] In this regard, this application further proposes that, when the control valve is in the second working state, after the compressed air in the lifting cylinder is discharged through the one-way valve, the feeding method of the AB glue applicator also includes:

[0140] An alarm operation is performed on the glue supply hopper using an alarm device; the alarm operation includes at least one of displaying an error message for the glue hopper and sounding an alarm.

[0141] In this embodiment, the alarm device is a device used to issue alarm signals to remind operators. It can achieve the alarm reminder function by displaying error information of the glue bucket (such as displaying text on the screen, flashing a specific color of the indicator light, etc.) and emitting a buzzer sound.

[0142] When the control valve is in the second working state, it indicates that the feeding process cannot proceed normally, and failure to address this may lead to production interruption. The alarm device is triggered based on the monitoring and judgment of abnormal conditions in the feeding air circuit. It attracts the operator's attention from both visual and auditory perspectives by displaying information and emitting sounds, enabling them to quickly identify the problem and take appropriate measures to ensure the stable operation of the feeding system.

[0143] Specifically, when the control valve is in the second operating state, it means that the feeding hopper and the feeding air circuit in the feeding system are mismatched. At this time, the compressed air in the lifting cylinder is first discharged through the one-way valve, restoring the lifting cylinder to its initial or safe state. Subsequently, the alarm device is triggered, performing alarm operations according to a preset program. For example, it displays the message "Feeding hopper error, please check" on the screen, and simultaneously activates a buzzer to emit a continuous or intermittent beeping sound, reminding the operator to handle the abnormal situation promptly.

[0144] Through this embodiment, by utilizing the multiple alarm modes of the alarm device, operators can quickly and accurately obtain information about errors in the material feeding bucket, without spending a lot of time troubleshooting, thus improving the efficiency of fault handling and ensuring the continuity of production.

[0145] In some of the solutions described above in this application, the feeding air path determines the matching status of the glue bucket through an identification circuit. However, the specific implementation method of the identification circuit is not clear, and there is still a risk of misjudgment in manual operation, which cannot ensure the accuracy of the glue bucket information identification.

[0146] In this regard, this application further proposes an identification circuit including a target sensor;

[0147] Prior to S220, the feeding methods for this AB glue applicator also included:

[0148] Acquire target information from the target sensor; the target information includes at least one of the following: the color of the glue bucket and the glue bucket identification code;

[0149] Based on the target information, determine the recognition result.

[0150] In this embodiment, the target sensor is a device capable of sensing specific target features and converting them into electrical signals. In this application, it is used to acquire relevant information about the supply glue bucket, such as the bucket color and bucket identification code.

[0151] The target information is specific information about the supply bucket obtained by the target sensor, including at least one of the following: bucket color (different bucket colors represent different types of buckets) and bucket identification code (similar to the bucket's "ID card", which can uniquely identify the bucket).

[0152] The target sensors utilize specific sensing principles to acquire target information. For example, color sensors determine the color of the glue bucket by detecting the wavelength of light reflected from its surface; RFID readers read the identification code information on the glue bucket through optical, electromagnetic, or other methods. Different types of supply glue buckets have specific color or identification code characteristics. When the target information matches the preset matching characteristics, the identification result is a match; otherwise, it is a mismatch. In this way, the compatibility between the supply glue bucket and the supply air circuit can be accurately determined, providing a reliable basis for subsequent adjustment of the control valve's operating status.

[0153] Specifically, before executing step S220, the target sensor is first activated to begin working and acquire target information about the supply bucket. This target information can be one or both of the following: bucket color, bucket identification code, or both. Then, the target information is analyzed and processed according to preset rules and algorithms. For example, the acquired bucket color is compared with pre-stored matching colors, or the bucket identification code is decoded and verified against a correct code. Finally, the identification result is determined based on the analysis and processing results, i.e., whether the supply bucket matches the supply air path.

[0154] In this embodiment, target information such as the color and identification code of the glue bucket is obtained to determine the identification result. Compared with the judgment of a single factor, it can more comprehensively and accurately identify the matching status of the supply glue bucket and the supply air circuit, greatly reducing the probability of misjudgment and ensuring that only the correct glue bucket can be connected to the supply air circuit for material transportation.

[0155] In some of the solutions described above in this application, when the target sensor is a color sensor, the specific implementation method for accurately obtaining the color of the glue bucket by the color sensor is not clear, which makes it impossible to ensure the accuracy of the glue bucket information identification.

[0156] In this regard, this application further proposes that the target sensor is a color sensor, and the target information is the color of the glue bucket;

[0157] Acquire target information from the target sensor, including:

[0158] Acquire sensor data collected by the color sensor;

[0159] Based on sensor data, determine the color matching degree between the supply bucket and the preset reference color;

[0160] The color matching degree is compared with the preset matching degree threshold to determine the color of the glue bucket for the supply.

[0161] In this embodiment, the sensor data is the raw electrical signal data collected by the color sensor. This data reflects information such as the intensity of the color on the surface of the feeding bucket in each color channel (such as red, green, and blue), and is the basis for subsequently determining the color matching degree.

[0162] The preset reference color is a pre-defined standard color value that corresponds to the color of the correct supply glue bucket, serving as a reference standard for determining whether the actual supply glue bucket color is the correct supply glue bucket color.

[0163] Color matching degree is an indicator used to quantify the similarity between the actual color of the feeding bucket and the preset reference color. The value range is usually between 0 and 1. The closer the value is to 1, the more similar the colors are.

[0164] The preset matching threshold is a manually set critical value used to judge whether the colors match. When the color matching degree is greater than or equal to the threshold, it is considered to be the correct color of the supply bucket; otherwise, it is considered not to be the correct color of the supply bucket.

[0165] The color sensor operates based on optical principles, acquiring color information by detecting the intensity distribution of different color channels (such as red, green, and blue) in the light reflected from the surface of the feeding container. Common algorithms for calculating color matching accuracy, such as the Euclidean distance algorithm, calculate the distance between the actual color and a preset reference color in the color space and convert it into a similarity index (i.e., color matching accuracy). The preset matching accuracy threshold is set according to the color matching accuracy requirements in practical applications. By comparing the color matching accuracy with this preset threshold, it is possible to quickly and accurately determine whether the color of the feeding container matches the preset correct color, thus providing a basis for subsequent matching judgments between the feeding container and the feeding air path.

[0166] Specifically, the process begins by activating the color sensor to collect color information from the surface of the glue supply bucket, generating sensor data. Next, a specific algorithm analyzes and processes the sensor data to calculate the color matching degree between the actual color of the glue supply bucket and a preset reference color. Then, the calculated color matching degree is compared to a preset matching degree threshold. If the color matching degree is greater than or equal to the preset matching degree threshold, the color of the glue supply bucket is determined to meet the requirements, i.e., it is identified as the correct bucket color; if the color matching degree is less than the preset matching degree threshold, the color of the glue supply bucket is determined to not meet the requirements.

[0167] In this embodiment, the color of the glue bucket is determined by calculating the color matching degree and comparing it with a preset threshold. Compared with simple color classification judgment, this method can more accurately quantify the degree of color similarity, reduce misjudgment caused by subtle color differences, and improve the accuracy and reliability of color recognition.

[0168] It should be clarified that this application is not limited to the specific configurations and processes described above and shown in the figures. For the sake of brevity, detailed descriptions of known methods are omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method process of this application is not limited to the specific steps described and shown. Those skilled in the art can make various changes, modifications, and additions, or change the order of steps, after understanding the spirit of this application.

[0169] The functional blocks shown in the above-described structural diagram can be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, they can be, for example, electronic circuits, application-specific integrated circuits (ASICs), appropriate firmware, plug-ins, function cards, etc. When implemented in software, the elements of this application are programs or code segments used to perform the required tasks. Programs or code segments can be stored on a machine-readable medium or transmitted over a transmission medium or communication link via data signals carried on a carrier wave. "Machine-readable medium" can include any medium capable of storing or transmitting information. Examples of machine-readable media include electronic circuits, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, radio frequency (RF) links, etc. Code segments can be downloaded via computer networks such as the Internet, intranets, etc.

[0170] It should also be noted that the exemplary embodiments mentioned in this application describe methods or systems based on a series of steps or apparatus. However, this application is not limited to the order of the above steps; that is, the steps can be performed in the order mentioned in the embodiments, or in a different order, or several steps can be performed simultaneously.

[0171] The aspects of this disclosure have been described above with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this disclosure. It should be understood that each block in the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing apparatus to produce a machine such that these instructions, executable via the processor of the computer or other programmable data processing apparatus, enable the implementation of the functions / actions specified in one or more blocks of the flowchart illustrations and / or block diagrams. Such a processor can be, but is not limited to, a general-purpose processor, a special-purpose processor, a special application processor, or a field-programmable logic circuit. It is also understood that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can also be implemented by special-purpose hardware performing the specified functions or actions, or can be implemented by a combination of special-purpose hardware and computer instructions.

[0172] The above description is merely a specific implementation of this application. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, modules, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here. It should be understood that the protection scope of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the protection scope of this application.

Claims

1. A feeding air path for an AB glue coating machine, characterized in that, The feeding gas path includes: A reversing valve is used to determine whether to input compressed air into the feeding air circuit based on the installation status of the feeding rubber barrel in the feeding air circuit. A control valve, the first end of which is connected to the first end of the reversing valve, and the second end of which is connected to an identification circuit. The identification circuit is used to identify the matching status of the feeding rubber bucket and the feeding air circuit. The control valve is used to control the conduction status of the compressed air according to the identification result of the identification circuit. A lifting cylinder, the first end of which is connected to the third end of the control valve, and the second end of which is connected to the pressure plate of the feeding glue tank, the lifting cylinder is used to control the pressure plate to transport the material in the feeding glue tank to the AB glue coating machine through the compressed air.

2. The feeding gas path according to claim 1, characterized in that, When the identification result of the identification circuit indicates that the feeding glue bucket matches the feeding air circuit, the control valve is in the first working state; in the first working state, the first end of the control valve is connected to the third end of the control valve, and the compressed air enters the lifting cylinder through the control valve; If the identification result of the identification circuit indicates that the feeding glue tank and the feeding air circuit are mismatched, the control valve is in a second working state; in the second working state, the first end of the control valve is disconnected from the third end of the control valve, and the compressed air is blocked by the control valve.

3. The feeding air path according to claim 2, characterized in that, The feeding gas path also includes: A one-way valve, the input end of which is connected to the fourth end of the control valve, is used to discharge compressed air from the lifting cylinder when the control valve is in the second working state.

4. The feeding air path according to claim 1, characterized in that, The identification circuit includes a target sensor; The output terminal of the target sensor is connected to the second terminal of the control valve, and the target sensor is used to determine the identification result based on the acquired target information; The target information includes at least one of the following: the color of the glue bucket and the glue bucket identification code.

5. The feeding air path according to claim 1, characterized in that, The identification circuit includes a target sensor and a controller; The output terminal of the target sensor is connected to the first terminal of the controller. The target sensor is used to determine the identification result based on the collected target information. The target information includes at least one of the following: the color of the glue bucket and the glue bucket identification code. The second end of the controller is connected to the second end of the control valve, and the controller is used to output a drive signal to the control valve to indicate the working state of the control valve based on the identification result.

6. The feeding air path according to claim 5, characterized in that, The feeding gas path also includes: An alarm device is provided, the input terminal of which is connected to the third terminal of the controller. The alarm device is used to perform an alarm operation on the feeding glue tank when the identification result indicates that the feeding glue tank and the feeding air circuit are mismatched.

7. The feeding air path according to claim 1, characterized in that, The second end of the lifting cylinder is also connected to the second end of the reversing valve; When the pressure plate of the feeding glue tank moves to the bottom of the feeding glue tank, the compressed air in the lifting cylinder is discharged through the second end of the reversing valve.

8. An AB glue coating machine, characterized in that, The glue applicator includes a feeding system, a metering system, a dispensing head, and a controller; The feeding system is used to deliver the material in the feeding bucket to the metering system based on the feeding air path of the AB glue coating machine according to any one of claims 1-7. The metering system is used to mix the materials in the feeding bucket conveyed by the feeding system according to a preset ratio to obtain AB glue, and to convey the AB glue to the dispensing head; The dispensing head is used to apply the AB adhesive delivered by the metering system to the surface of the target workpiece. The controller is used to control the working status of the feeding system, the metering system, and the dispensing head.

9. A feeding method for an AB glue coating machine, characterized in that, The method, applied to the air supply path of the AB glue coating machine according to any one of claims 1-7, comprises: The on / off state of the reversing valve is determined based on the installation status of the feeding rubber tank in the feeding air circuit; the on / off state is used to control whether compressed air is input into the feeding air circuit. Based on the identification result of the identification circuit, the working state of the control valve is determined; the identification circuit is used to identify the matching state between the feeding glue tank and the feeding air circuit, and the working state is used to control the conduction state of the compressed air; When the reversing valve is in the on state and the control valve is in the first working state, the compressed air is delivered to the lifting cylinder through the reversing valve and the control valve. The lifting cylinder controls the pressure plate of the feeding glue tank to deliver the material in the feeding glue tank to the AB glue coating machine. The first working state is the working state of the control valve when the feeding glue tank and the feeding air circuit are matched.

10. The method according to claim 9, characterized in that, After determining the operating state of the control valve based on the identification result of the identification circuit, the method further includes: When the control valve is in the second working state, the compressed air in the lifting cylinder is discharged through the one-way valve; the second working state is the working state of the control valve when the feeding hopper and the feeding air circuit are not matched.

11. The method according to claim 10, characterized in that, When the control valve is in the second operating state, after the compressed air in the lifting cylinder is discharged through the one-way valve, the method further includes: An alarm operation is performed on the glue supply hopper by an alarm device; the alarm operation includes at least one of displaying an error message for the glue hopper and sounding an alarm.

12. The method according to claim 9, characterized in that, The identification circuit includes a target sensor; Before determining the operating state of the control valve based on the identification result of the identification circuit, the method further includes: Acquire target information from the target sensor; the target information includes at least one of the glue bucket color and the glue bucket identification code. The identification result is determined based on the target information.

13. The method according to claim 12, characterized in that, The target sensor is a color sensor, and the target information is the color of the glue bucket; The acquisition of target information from the target sensor includes: Acquire sensor data collected by the color sensor; Based on the sensor data, the color matching degree between the feeding bucket and the preset reference color is determined; The color matching degree is compared with a preset matching degree threshold to determine the color of the glue bucket.

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