Glue supply structure of glue injection machine

Abstract

This utility model relates to the field of dispensing machine technology and discloses a dispensing machine dispensing structure, including a base, a pressure plate pump assembly, a control assembly, and a dispensing pipeline. The top of the base is equipped with a guide wheel assembly and a limiting seat. The guide wheel assembly, in conjunction with the glue bucket base frame, limits and guides the sliding of the glue bucket, enabling easy switching of the glue bucket between dispensing and changing stations through rolling. The limiting seat limits the front end of the glue bucket. A positioning assembly is also included, comprising a semi-circular limiting ring adapted to the glue bucket and two arc-shaped limiting plates. The arc-shaped limiting plates are rotatably connected to the two ends of the semi-circular limiting ring, and can be locked in place by a latch to form a positioning space and secure the glue bucket, effectively preventing the glue bucket from shaking when the pressure plate rises and detaches from the bucket. This utility model achieves easy switching of the glue bucket through the guide wheel assembly, and combines the positioning assembly and the limiting seat to form multiple positioning functions, significantly improving the ease of movement of the glue bucket and the stability during dispensing.

Description

Technical Field

[0001] This utility model belongs to the field of glue dispensing machine technology, and specifically relates to a glue supply structure for a glue dispensing machine. Background Technology

[0002] In industrial production fields such as electronic packaging, automotive parts sealing, and building component bonding, dispensing machines are the core equipment for achieving precise coating and filling of adhesives. As a key component of the dispensing machine, the performance of the dispensing structure directly determines the stability of dispensing, ease of operation, and adhesive utilization.

[0003] Currently, most mainstream glue dispensing machines on the market employ a fixed base combined with a manually operated glue bucket design. The glue bucket needs to be manually lifted and aligned with the glue inlet of the pressure plate pump assembly, then initially secured with bolts or clips. Subsequently, the pressure plate descends to expel the glue, completing the glue dispensing preparation. This type of structure is widely used in small- to medium-batch production scenarios, but its design focuses on basic glue dispensing functions and does not fully consider workstation switching efficiency and glue bucket positioning stability. As industrial production demands increasing automation and production efficiency, the limitations of traditional glue dispensing structures are becoming increasingly apparent.

[0004] Meanwhile, the existing glue supply structure is inadequate in positioning the glue bucket at the glue supply station, which is the core problem leading to instability in the glue supply process. Traditional positioning methods often use a single-sided baffle or simple buckle to limit the glue bucket in one direction, which cannot form a holistic fixation. When the pressure plate of the pressure plate pump assembly rises and disengages from the glue bucket, the negative pressure between the pressure plate and the glue surface can easily cause the glue bucket to rise synchronously with the pressure plate, or the glue bucket may shake due to equipment vibration. This not only causes misalignment between the glue bucket and the pressure plate, affecting the sealing effect during the next glue supply, but may also lead to the glue bucket tipping over, glue leakage, increased equipment cleaning costs and glue waste.

[0005] In view of this, we propose a glue supply structure for a glue dispensing machine to solve the above problems. Utility Model Content

[0006] The present invention aims to solve the technical problems of the prior art, which are that the movement of the glue bucket is mostly achieved by sliding or without a guide design, resulting in high pushing resistance and easy deviation. When changing glue, the bucket may also detach from the base, making operation laborious and posing safety hazards. When the pressure plate rises, the glue bucket is prone to shaking or lifting, which can easily lead to misalignment and glue leakage. Furthermore, the positioning structure is cumbersome to operate when changing glue.

[0007] To achieve the above objectives, this utility model provides the following technical solution: A glue supply structure for a glue dispensing machine includes a base, a pressure plate pump assembly mounted on the base, a control assembly, and a glue supply pipeline; The base has a guide wheel assembly and a limiting seat on its top. The guide wheel assembly cooperates with the base frame of the glue bucket to limit the glue bucket and guide its sliding. The limiting seat is set at the corresponding position at the front end of the glue bucket to limit the front end of the glue bucket. Through the rolling cooperation between the guide wheel assembly and the glue bucket, the glue bucket can be easily switched between the glue supply station and the glue changing station. The positioning component is used to position the glue bucket at the glue supply station. It includes a semi-circular limiting ring adapted to the glue bucket and two arc-shaped limiting plates. The two arc-shaped limiting plates are rotatably connected to both ends of the semi-circular limiting ring and can be locked by locking buckles to form a positioning space to lock the glue bucket. The positioning component can effectively prevent the glue bucket from shaking during the process of the pressure plate of the pressure plate pump assembly rising and disengaging from the glue bucket.

[0008] Preferably, the guide wheel assembly includes four sets of guide strips fixed to the top of the base for guiding and sliding with the base frame; the inner two sets of guide strips have rollers arranged at equal intervals to form a rolling guiding engagement with the base frame; the ends of the four sets of guide strips, located at the top of the base, are fixed with transverse baffles by bolts to limit the movement of the glue bucket, preventing it from being pulled out of the base when the glue bucket is pulled from the glue supply station to the glue changing station. The base frame includes a circular seat located above the rollers and guide bars and fixed to the bottom of the rubber bucket, and a limiting strip fixed to the bottom of the circular seat. The limiting strip cooperates with the guide bars and rollers to realize the limiting and guiding sliding of the base frame.

[0009] Preferably, the limiting seat includes a semi-circular limiting plate fixed to the top of the base and limited to the front side of the circular seat, and a semi-circular arc-shaped limiting baffle integrally formed on the top of the semi-circular limiting plate and located above the circular seat. When the glue bucket is pushed to the glue injection station, the front of the circular seat is precisely embedded in the limiting space formed by the semi-circular limiting plate and the semi-circular arc-shaped limiting baffle, forming a limiting in the front and vertical directions.

[0010] Preferably, the pressure plate pump assembly includes two sets of hydraulic cylinders arranged symmetrically, a lifting platform connected to the end of the piston rod of the hydraulic cylinder, a glue supply cylinder installed at the center of the bottom of the lifting platform, a pressure plate fixed at the bottom of the glue supply cylinder, and a motor installed on the lifting platform. The output shaft of the motor is connected to a glue supply screw that rotates inside the glue supply cylinder. The hydraulic cylinder is fixed on the base, and the edge of the pressure plate is provided with a seal so that it can fit tightly against the inner wall of the glue tank.

[0011] Preferably, the control component is installed on the top of the base, to the left of the pressure plate pump assembly, and is electrically connected to the hydraulic cylinder. By controlling the movement of the hydraulic cylinder, the lifting platform is raised and lowered: when the piston rod of the hydraulic cylinder retracts, the pressure plate moves down to squeeze the glue material in the glue barrel; during the glue supply process, the motor drives the glue supply screw to rotate, assisting in the delivery of the glue material.

[0012] Preferably, the top of the glue supply cylinder is connected to the glue supply pipeline, and the other end of the glue supply pipeline is connected to the glue injection actuator; a pressure sensor is installed on the glue supply pipeline, which is electrically connected to the control component to detect the glue pressure in real time and provide feedback signals.

[0013] Preferably, the pressure plate is equipped with a one-way intake valve and a one-way exhaust valve.

[0014] Preferably, the positioning assembly also includes two outer sleeves fixed to the top of the base and fitted onto the outer sides of the two hydraulic cylinders, and two clamps bound to the outer sides of the two outer sleeves. The plug blocks on the two clamps are engaged with the plug slots at both ends of the semi-circular limiting ring. The plug slots and plug blocks are fixed together by the engagement of bolts and nuts that pass through the plug slots and plug blocks.

[0015] Compared with the prior art, the technical effects and advantages of this utility model are: This invention utilizes a guide wheel assembly on the base to form a rolling engagement with the glue bucket base frame, significantly reducing the resistance to glue bucket movement. This allows operators to easily push the glue bucket between the glue supply station and the glue changing station. At the same time, the guide strip of the guide wheel assembly prevents the glue bucket from shifting, and the horizontal baffle at the end prevents the glue bucket from detaching from the base when pulled out. This reduces labor intensity and improves operational safety and the smoothness of station switching.

[0016] The positioning component of this utility model forms a complete positioning space by using a semi-circular limiting ring and an arc-shaped limiting plate. Combined with a locking buckle, it achieves all-round locking of the glue bucket. At the same time, it works with the limiting seat to limit the front end and vertical direction of the glue bucket, forming multiple positioning guarantees. This can effectively prevent the glue bucket from shaking or lifting during the process of the pressure plate rising and detaching from the glue bucket, avoiding the risk of glue bucket misalignment and glue leakage, and laying the foundation for glue supply stability.

[0017] The pressure plate of this invention is equipped with a sealing element on its edge, which can fit tightly against the inner wall of the glue tank to ensure sufficient extrusion of the glue. The motor-driven glue supply screw can assist in the delivery of the glue and avoid blockage by high-viscosity glue. The one-way air inlet valve and one-way air outlet valve on the pressure plate can balance the air pressure and ensure smooth lifting of the pressure plate. This not only improves the uniformity of glue delivery but also avoids the problem of pressure plate jamming, ensuring stable glue output.

[0018] The control components of this invention can be linked with hydraulic cylinders, motors, and pressure sensors to achieve automated control of pressure plate lifting, motor speed adjustment, and real-time glue pressure monitoring. The quick-connect design of the glue supply pipeline facilitates disassembly and maintenance, which not only reduces errors caused by human intervention and improves glue supply accuracy, but also simplifies equipment debugging and maintenance processes. It can better adapt to the glue supply needs in different production scenarios, and improves the practicality and automation level of the glue supply structure of the glue dispensing machine as a whole. Attached Figure Description

[0019] Figure 1This is a schematic diagram of the glue bucket of this utility model in the glue supply station; Figure 2 This is a schematic diagram of the glue bucket of this utility model in the glue changing station; Figure 3 This is a schematic diagram of the disassembled glue bucket of this utility model; Figure 4 This is a schematic diagram of the structure of the glue bucket of this utility model; Figure 5 This is a schematic diagram of the structure of the pressure plate pump assembly of this utility model; Figure 6 This is a schematic diagram of the positioning component of this utility model.

[0020] In the diagram: 1. Base; 2. Pressure plate pump assembly; 3. Control assembly; 4. Glue supply pipeline; 5. Guide wheel assembly; 6. Limit seat; 7. Base frame; 8. Positioning assembly; 9. Semi-circular limit ring; 10. Arc-shaped limit plate; 11. Lock; 12. Glue bucket; 13. Guide strip; 14. Roller; 15. Circular seat; 16. Limit strip; 17. Semi-circular limit upright plate; 18. Semi-circular arc-shaped limit baffle; 19. Hydraulic cylinder; 20. Lifting platform; 21. Glue supply cylinder; 22. Motor; 23. One-way air inlet valve; 24. One-way exhaust valve; 25. Outer sleeve; 26. Clamp; 27. Insert block; 28. Insert slot; 29. ​​Bolt; 30. Pressure plate; 31. Horizontal baffle. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] The following combination Figures 1 to 6 This application will be described in further detail. This application discloses a glue supply structure for a glue dispensing machine, which mainly consists of a base 1, a pressure plate 30 pump assembly, a control assembly 3, a glue supply pipeline 4, and a positioning assembly 8. The various structures work together to ensure a stable and efficient glue supply process. The base 1 serves as the installation foundation and support carrier for the entire glue supply structure. Its top integrates guide wheel group 5 and limit seat 6. Its core function is to provide a stable installation space and moving track for the glue tank 12, ensuring that the glue tank 12 can switch smoothly between the glue supply station and the glue changing station. The guide wheel assembly 5 includes four sets of guide bars 13 fixed to the top of the base 1, wherein rollers 14 are arranged at equal intervals on the inner two sets of guide bars 13; and a transverse baffle 31 is fixed to the end of the four sets of guide bars 13 and located on the top of the base 1 by bolts 29.

[0023] The guide wheel assembly 5 is adapted to the base frame 7 of the glue bucket 12. The base frame 7 includes a circular seat 15 located above the roller 14 and guide bar 13 and fixed to the bottom of the glue bucket 12, and a limiting bar 16 fixed to the bottom of the circular seat 15.

[0024] The limiting strip 16 is embedded in the guide channel formed by four sets of guide strips 13. The rollers 14 on the two inner sets of guide strips 13 are in contact with the bottom of the limiting strip 16. When the glue bucket 12 is pushed or pulled, the rollers 14 roll instead of sliding friction. At the same time, the guide strips 13 limit the limiting strip 16 in the left and right directions to prevent the glue bucket 12 from shifting. The transverse baffle 31 blocks the circular seat 15 from continuing to move when the glue bucket 12 is pulled out from the glue supply station to the glue changing station, preventing the glue bucket 12 from falling off the base 1.

[0025] On the one hand, rolling friction significantly reduces the moving resistance of the glue bucket 12, allowing operators to easily push the glue bucket 12 to complete the workstation switching, reducing labor intensity, and improving the moving efficiency by more than 100% compared with the traditional sliding structure; on the other hand, the cooperation of the four sets of guide strips 13 and limit strips 16 achieves precise guidance, avoiding glue supply alignment deviation caused by the offset of the glue bucket 12 during movement, and the setting of the transverse baffle 31 further improves the operational safety and equipment stability.

[0026] The limiting seat 6 includes a semi-circular limiting plate 17 fixed to the top of the base 1 and limited to the front side of the circular seat 15, and a semi-circular arc-shaped limiting baffle 18 integrally formed on the top of the semi-circular limiting plate 17 and located above the circular seat 15.

[0027] When the glue bucket 12 is pushed to the glue supply station, the front of the circular seat 15 is precisely embedded in the "U"-shaped limiting space formed by the semi-circular limiting plate 17 and the semi-circular arc-shaped limiting baffle 18. The semi-circular limiting plate 17 prevents the circular seat 15 from moving forward, forming a front limit; the semi-circular arc-shaped limiting baffle 18 covers the top of the circular seat 15, restricting the upward displacement of the circular seat 15, and at the same time, it cooperates with the base 1 to form a vertical limit.

[0028] This achieves multiple limits on the front end and vertical direction of the glue tank 12, preventing the glue tank 12 from moving forward or rising upward due to the squeezing of the pressure plate 30 or equipment vibration during the glue supply process. This lays the foundation for the precise locking of the subsequent positioning component 8 and further ensures the stability of the glue tank 12 at the glue supply station.

[0029] The positioning component 8 is the core structure that ensures the stability of the glue barrel 12 at the glue supply station. It is used to precisely lock the glue barrel 12 after it arrives at the glue supply station to prevent the glue barrel 12 from shaking during the process of the pressure plate 30 rising and disengaging from the glue barrel 12. The positioning component 8 includes a semi-circular limiting ring 9 that is adapted to the outer wall of the glue barrel 12, and two arc-shaped limiting plates 10 that are rotatably connected to both ends of the semi-circular limiting ring 9. The connection between the arc-shaped limiting plate 10 and the semi-circular limiting ring 9 is provided with a latch 11.

[0030] After the glue bucket 12 arrives at the glue supply station, the semi-circular limiting ring 9 fits against the outer rear wall of the glue bucket 12. The two arc-shaped limiting plates 10 are rotated to fit against the outer front wall of the glue bucket 12. At this time, the two arc-shaped limiting plates 10 and the semi-circular limiting ring 9 together form a complete circular positioning space. The glue bucket 12 can be locked in the positioning space by engaging the locking buckle 11, thus restricting the circumferential and radial movement of the glue bucket 12.

[0031] The circular positioning space fits tightly against the outer wall of the glue bucket 12, achieving 360° all-round positioning. This effectively solves the problem of the glue bucket 12 swaying when the pressure plate 30 rises, which is caused by the traditional positioning structure's unidirectional positioning. The locking buckle 11 design is easy to operate, and the operator can lock or unlock it in just 10 seconds. Compared with the bolt 29 fixing structure, the operation efficiency is improved, while avoiding the problem of thread wear caused by frequent disassembly of the bolt 29.

[0032] The positioning assembly 8 also includes two outer sleeves 25 fixed to the top of the base 1 and sleeved on the outer sides of the two hydraulic cylinders 19, and two clamps 26 bound to the outer sides of the two outer sleeves 25. The clamps 26 are provided with plug-in blocks 27. The two ends of the semi-circular limiting ring 9 are provided with plug-in grooves 28 that are adapted to the plug-in blocks 27. The plug-in grooves 28 and the plug-in blocks 27 are fixed by through bolts 29 and nuts.

[0033] The outer sleeve 25 is fixed to the top of the base 1 by bolts 29, which protects the hydraulic cylinder 19 and provides an installation base for the clamp 26. The clamp 26 is bound to the outer sleeve 25 by bolts 29, and the plug block 27 at the top of the clamp is inserted into the plug groove 28 of the semi-circular limiting ring 9. The two are then fixed by the threaded engagement of the bolts 29 and the nut, thereby stably installing the entire positioning assembly 8 above the base 1 and surrounding the rubber bucket 12.

[0034] The positioning component 8 and the base 1 are rigidly connected by the cooperation of the outer sleeve 25 and the clamp 26, which prevents the positioning component 8 from shaking. The cooperation of the plug block 27 and the plug slot 28 facilitates the disassembly and maintenance of the positioning component 8. When it is necessary to replace the glue bucket 12 of different specifications, the bolt 29 can be loosened to replace the matching semi-circular limit ring 9 and arc-shaped limit plate 10, thereby improving the versatility of the equipment.

[0035] The pressure plate 30 pump assembly is the core power structure for realizing the extrusion and conveying of rubber material. The pressure plate 30 is driven by the hydraulic cylinder 19 to extrude the rubber material, and the motor 22 drives the rubber supply screw to assist in conveying, ensuring stable output of rubber material. The pressure plate 30 pump assembly includes two sets of hydraulic cylinders 19 arranged symmetrically. The hydraulic cylinders 19 are fixed on the base 1, and the piston rod end of the hydraulic cylinder 19 is connected to a horizontally arranged lifting platform 20.

[0036] Control component 3 sends an electrical signal to hydraulic cylinder 19. When the piston rod of hydraulic cylinder 19 extends, it drives the lifting platform 20 to rise; when the piston rod retracts, it drives the lifting platform 20 to fall. The two sets of hydraulic cylinders 19 are symmetrically arranged to ensure that the lifting platform 20 is subjected to balanced force and to avoid tilting during the lifting process. The symmetrical layout of hydraulic cylinders 19 ensures the stable operation of the lifting platform 20 and avoids poor sealing between the pressure plate 30 and the inner wall of the rubber barrel 12 due to platform tilting.

[0037] The rubber extrusion and conveying structure includes a rubber supply cylinder 21 installed at the center of the bottom of the lifting platform 20, a pressure plate 30 fixed at the bottom of the rubber supply cylinder 21, and an elastic seal on the edge of the pressure plate 30; a motor 22 is installed on the lifting platform 20, and the output shaft of the motor 22 is connected to a rubber supply screw that rotates inside the rubber supply cylinder 21 via a coupling; the pressure plate 30 is provided with a one-way air inlet valve 23 and a one-way air outlet valve 24.

[0038] When the lifting platform 20 descends, the pressure plate 30 moves down synchronously with the glue supply cylinder 21 into the glue tank 12. The sealing element at the edge of the pressure plate 30 fits tightly against the inner wall of the glue tank 12, forming a sealed space. The piston rod of the hydraulic cylinder 19 continues to retract, and the pressure plate 30 applies pressure to the glue material in the glue tank 12, pushing the glue material upward into the glue supply cylinder 21.

[0039] During the glue supply process, the motor 22 drives the glue supply screw to rotate clockwise. The screw blades of the glue supply screw generate an upward thrust on the glue material, which helps the glue material flow in the glue supply cylinder 21 and avoids blockage due to high viscosity. At the same time, the screw conveyor can make the glue output flow more uniform.

[0040] When the pressure plate 30 descends, the one-way air inlet valve 23 opens, allowing external air to enter the space between the pressure plate 30 and the surface of the rubber material, balancing the air pressure and ensuring that the pressure plate 30 descends smoothly to contact the rubber material. After the pressure plate 30 is in position and sealed with the inner wall of the rubber barrel 12, the one-way air inlet valve 23 closes to prevent compressed air leakage from affecting the extrusion effect. When the pressure plate 30 rises, the one-way exhaust valve 24 opens to expel the air between the pressure plate 30 and the surface of the rubber material, preventing the formation of negative pressure that would make it difficult for the pressure plate 30 to detach from the rubber material. If the air pressure inside the rubber barrel 12 reaches a set threshold due to rubber expansion or other reasons during the rubber supply process, the one-way exhaust valve 24 will also automatically open to exhaust air, ensuring that the pressure plate 30 descends smoothly.

[0041] The cooperation between the pressure plate 30 and the sealant enables the extrusion of the adhesive material in the glue tank 12 without any residue, thereby improving the utilization rate of the adhesive material and reducing waste. The auxiliary conveying of the glue supply screw solves the problem of conveying high-viscosity adhesive materials (viscosity > 10000 cP) and prevents the adhesive material from stagnating and deteriorating in the glue supply cylinder 21. The synergistic effect of the one-way air inlet valve 23 and the one-way exhaust valve 24 ensures that the lifting and lowering process of the pressure plate 30 is stable, preventing the pressure plate 30 from jamming or the adhesive material from splashing due to air pressure imbalance, thereby improving operational safety and glue supply stability.

[0042] The control component 3 is the "brain" of the entire glue supply structure. It is responsible for receiving signals, issuing instructions, and coordinating the work of various components. The control component 3 is fixed to the top of the base 1 and the left side of the pressure plate 30 pump assembly by bolts 29. It integrates a PLC controller, a touch screen display and a relay module. The control component 3 is electrically connected to the hydraulic cylinder 19, the motor 22 and the pressure sensor by wires. It can receive the glue pressure signal fed back by the pressure sensor and send action instructions to the hydraulic cylinder 19 and the motor 22.

[0043] The operator sets the lifting parameters of the pressure plate 30 (such as descent speed and extrusion pressure) through the touch screen. The PLC controller sends an electrical signal to the hydraulic cylinder 19 to control the extension and retraction of the piston rod of the hydraulic cylinder 19. For example, when it is necessary to start supplying glue, the controller instructs the piston rod of the hydraulic cylinder 19 to retract, which drives the pressure plate 30 to move down and extrude the glue. When the glue in the glue tank 12 is used up and needs to be replaced, the controller instructs the piston rod of the hydraulic cylinder 19 to extend, which drives the pressure plate 30 to rise and disengage from the glue tank 12.

[0044] Based on the viscosity of the adhesive and the required flow rate, the speed of motor 22 is set via the touch screen, and the PLC controller adjusts the output frequency of motor 22 to control the rotation speed of the adhesive feeding screw. For example, for low-viscosity adhesives, the speed of motor 22 is reduced to avoid waste caused by excessively fast adhesive delivery; for high-viscosity adhesives, the speed of motor 22 is increased to enhance the conveying thrust.

[0045] The pressure sensor on the glue supply line 4 detects the glue pressure in real time and converts the pressure signal into an electrical signal, which is then transmitted to the control component 3. If the glue pressure exceeds the set upper limit (e.g., due to pipe blockage), the controller issues an alarm signal and simultaneously instructs the motor 22 to stop rotating and the hydraulic cylinder 19 to stop pressurizing, to prevent the pipe from bursting. If the glue pressure is lower than the set lower limit (e.g., due to insufficient glue in the glue tank 12), the controller issues a glue shortage warning, reminding the operator to replace the glue tank 12.

[0046] Automated control replaces traditional manual operation, reducing human error and improving glue supply accuracy; real-time glue pressure monitoring and abnormal protection functions prevent equipment overload damage and extend equipment life; visual operation of the touch screen lowers the technical threshold for operators, and equipment debugging and parameter modification are convenient, making it suitable for the rapid production changeover needs in mass production scenarios.

[0047] The glue supply line 4 is a bridge connecting the glue supply cylinder 21 and the glue injection actuator. It is responsible for conveying the glue from the glue supply cylinder 21 to the glue injection nozzle. The glue supply line 4 is made of corrosion-resistant and high pressure-resistant polyurethane hose. One end is connected to the discharge port at the top of the glue supply cylinder 21 through a quick connector, and the other end is connected to the glue injection actuator (such as glue injection valve or glue injection gun) through a quick connector. A pressure sensor is installed in series on the glue supply line 4. The pressure sensor is fixed on the base 1 by a bracket and is electrically connected to the control component 3.

[0048] The adhesive in the glue tank 12 is pushed upward into the glue supply cylinder 21 by the pressure of the pressure plate 30 and the push of the glue supply screw, and then flows to the glue injection actuator along the glue supply pipeline 4. The pressure sensor is connected in series in the pipeline. When the adhesive flows through the sensor, the diaphragm of the sensor is deformed by the pressure of the adhesive. The pressure signal is converted into an electrical signal through the strain gauge and transmitted to the control component 3 in real time.

[0049] The glue supply line 4 uses a quick-connect coupling, which facilitates the disassembly and replacement of the glue supply line 4. When the line becomes aged or blocked, the operator can complete the replacement in just 1 minute, resulting in high maintenance efficiency. The polyurethane hose has good flexibility, which can adapt to the movement requirements of the glue injection actuator. At the same time, it has strong resistance to glue corrosion and has a service life of 2 to 3 years. Real-time monitoring by the pressure sensor ensures stable glue output pressure, avoids inconsistent glue injection volume due to glue pressure fluctuations, and ensures the consistency of glue injection quality.

[0050] The working process of the glue supply structure of this glue dispensing machine is as follows: The operator pushes the glue bucket 12 (with base frame 7) containing the glue to the glue changing station of the base 1, so that the limiting strip 16 of the base frame 7 is embedded between the guide strips 13 of the guide wheel group 5, and pushes the glue bucket 12 to roll along the guide wheel group 5 to the glue supply station. At this time, the circular seat 15 is embedded in the limiting space of the limiting seat 6, and the initial positioning is completed.

[0051] Rotate the two arc-shaped limiting plates 10 of the positioning component 8 to form a circular positioning space with the semi-circular limiting ring 9, and engage the locking buckle 11 to lock the glue bucket 12; check the position of the pressure plate 30 to ensure that the pressure plate 30 is in the highest position.

[0052] The glue supply parameters (such as the descent speed of the pressure plate 30, the extrusion pressure, the speed of the motor 22, and the upper / lower limit of the glue pressure) are set by the touch screen of the control component 3, and the glue supply program is started.

[0053] Control component 3 commands the piston rod of hydraulic cylinder 19 to retract, driving the lifting platform 20 and pressure plate 30 to move down. After the pressure plate 30 enters the glue tank 12, the seal fits against the inner wall of the glue tank 12. Motor 22 starts and drives the glue supply screw to rotate. The pressure plate 30 continuously squeezes the glue material, and the glue material enters the glue supply cylinder 21 under pressure. It is then transported to the glue supply pipeline 4 by the glue supply screw and finally flows to the glue injection actuator to complete the glue injection.

[0054] During the glue supply process, the pressure sensor provides real-time feedback of glue pressure signal; if the glue pressure is abnormal, the control component 3 will automatically alarm and take protective measures (such as shutdown and pressure relief); if the glue pressure is normal, glue supply will continue until the glue in the glue tank 12 is used up.

[0055] When the control component 3 issues a glue shortage warning, the glue supply program is stopped; the control component 3 instructs the piston rod of the hydraulic cylinder 19 to extend, driving the pressure plate 30 to rise and disengage from the glue tank 12; the locking buckle 11 of the positioning component 8 is opened, and the arc-shaped limit plate 10 is rotated to unlock the glue tank 12; the empty glue tank 12 is pulled along the guide wheel group 5 to the glue replacement station, and after removing the empty glue tank 12, steps 1-5 are repeated to replace the new glue tank 12, completing one glue supply cycle.

[0056] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A glue supply structure for a glue dispensing machine, characterized in that, Includes a base (1), a pressure plate pump assembly (2) mounted on the base (1), a control assembly (3), and a glue supply line (4); The base (1) has a guide wheel assembly (5) and a limiting seat (6) on its top. The guide wheel assembly (5) cooperates with the base frame (7) of the glue bucket (12) to limit the glue bucket (12) and guide its sliding. The limiting seat (6) is set at the corresponding position at the front end of the glue bucket (12) to limit the front end of the glue bucket (12). Through the rolling cooperation between the guide wheel assembly (5) and the glue bucket (12), the glue bucket (12) can be easily switched between the glue supply station and the glue changing station. The positioning component (8) is used to position the glue bucket (12) at the glue supply station. It includes a semi-circular limiting ring (9) adapted to the glue bucket (12) and two arc-shaped limiting plates (10). The two arc-shaped limiting plates (10) are rotatably connected to the two ends of the semi-circular limiting ring (9) respectively, and can be closed and locked by the latch (11) to form a positioning space to lock the glue bucket (12). The positioning component (8) can effectively prevent the glue bucket (12) from shaking during the process of the pressure plate (30) of the pressure plate pump assembly (2) rising and leaving the glue bucket (12).

2. The glue supply structure for a glue dispensing machine according to claim 1, characterized in that: The guide wheel assembly (5) includes four sets of guide bars (13) fixed to the top of the base (1) for guiding and sliding with the base frame (7); rollers (14) are arranged at equal intervals on the two inner sets of guide bars (13) to form a rolling guide engagement with the base frame (7); The base frame (7) includes a circular seat (15) located above the roller (14) and guide bar (13) and fixed to the bottom of the rubber bucket (12), and a limiting bar (16) fixed to the bottom of the circular seat (15). The limiting bar (16) cooperates with the guide bar (13) and roller (14) to realize the limiting and guiding sliding of the base frame (7).

3. The glue supply structure for a glue dispensing machine according to claim 2, characterized in that: The limiting seat (6) includes a semi-circular limiting plate (17) fixed to the top of the base (1) and limited to the front side of the circular seat (15) and a semi-circular arc-shaped limiting baffle (18) integrally formed on the top of the semi-circular limiting plate (17) and located above the circular seat (15). When the glue bucket (12) is pushed to the glue injection station, the front of the circular seat (15) is just embedded in the limiting space formed by the semi-circular limiting plate (17) and the semi-circular arc-shaped limiting baffle (18), forming a front and vertical limiting.

4. The glue supply structure for a glue dispensing machine according to claim 1, characterized in that: The pressure plate pump assembly (2) includes two sets of hydraulic cylinders (19) arranged symmetrically, a lifting platform (20) connected to the piston rod end of the hydraulic cylinder (19), a glue supply cylinder (21) installed at the center of the bottom of the lifting platform (20), a pressure plate (30) fixed at the bottom of the glue supply cylinder (21), and a motor (22) installed on the lifting platform (20). The output shaft of the motor (22) is connected to a glue supply screw that is rotatably installed in the glue supply cylinder (21). The hydraulic cylinder (19) is fixed on the base (1), and the edge of the pressure plate (30) is provided with a seal so that it can fit tightly against the inner wall of the glue barrel (12).

5. The glue supply structure for a glue dispensing machine according to claim 4, characterized in that: The control component (3) is installed on the top of the base (1) and on the left side of the pressure plate pump component (2), and is electrically connected to the hydraulic cylinder (19). By controlling the action of the hydraulic cylinder (19), the lifting platform (20) is lifted and lowered: when the piston rod of the hydraulic cylinder (19) is retracted, the pressure plate (30) moves down to squeeze the glue material in the glue barrel (12); during the glue supply process, the motor (22) drives the glue supply screw to rotate, which assists in the delivery of the glue material.

6. The glue supply structure for a glue dispensing machine according to claim 5, characterized in that: The top of the glue supply cylinder (21) is connected to the glue supply pipeline (4), and the other end of the glue supply pipeline (4) is connected to the glue injection actuator; the glue supply pipeline (4) is equipped with a pressure sensor, which is electrically connected to the control component (3) to detect the glue pressure in real time and provide feedback signals.

7. The glue supply structure for a glue dispensing machine according to claim 4, characterized in that: The pressure plate (30) is equipped with a one-way air intake valve (23) and a one-way air exhaust valve (24).

8. The glue supply structure for a glue dispensing machine according to claim 4, characterized in that: The positioning assembly (8) also includes two outer sleeves (25) fixed on the top of the base (1) and sleeved on the outer side of the two hydraulic cylinders (19), and two clamps (26) bound to the outer side of the two outer sleeves (25). The plug-in blocks (27) on the two clamps (26) are engaged with the plug-in grooves (28) at both ends of the semi-circular limiting ring (9). The plug-in grooves (28) and plug-in blocks (27) are fixed together by the engagement of bolts (29) and nuts that pass through the plug-in grooves (28) and plug-in blocks (27).

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