An edge sealing glue break point dispensing technology

Abstract

The application relates to the field of electronic paper displays, and discloses a sealing adhesive breakpoint dispensing technology, which comprises a straight line breakpoint dispensing breakpoint rule, the straight line breakpoint dispensing breakpoint rule comprises the following steps: S1. preliminary preparation and parameter setting: selecting a dispensing needle nozzle specification according to the parameters of a product, and setting the ideal length and gap value of each dispensing line segment; S2. straight line dispensing starting operation: starting dispensing according to the set length and gap rule; S3. dispensing process monitoring and adjustment: dispensing is monitored in real time by means of a high-definition camera and a sensor, and fine adjustment is carried out; and S4. straight line dispensing finishing treatment: dispensing speed is gradually reduced by a certain distance in advance. The sealing adhesive breakpoint dispensing technology is a brand-new dispensing technology which replaces traditional dispensing technology, solves the problem of closed bubbles in the dispensing process, reduces subsequent defoaming procedures, improves production yield, improves production efficiency, and reduces production cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic paper display, in particular to a kind of edge sealing glue breakpoint dispensing technology. BACKGROUND

[0002] With the digital reading wave sweeping the world, electronic paper products have shown explosive growth in market demand due to their paper-like feel and low power consumption, attracting many companies to enter the electronic paper production field. In the assembly process of the core component of electronic paper, the module, the edge sealing process is a critical link, as it is responsible for securing internal components, isolating moisture and dust, and ensuring the service life and performance of the module.

[0003] With the development of electronic paper modules towards lightness and high precision, the shortcomings of traditional edge sealing glue dispensing technology become more prominent. On the one hand, the edge sealing glue itself has high flowability, and the module dispensing gap is very small. The natural capillary effect combined with the unevenness of the waterproof film edge makes the capillary speed of different points differ greatly when the glue flows to fill the gap. This directly causes air to be difficult to discharge smoothly, and a large number of bubbles are trapped inside the glue layer, forming troublesome cavities after solidification. These cavities not only severely weaken the sealing of the glue, allowing moisture and dust to enter, but also greatly affect the display effect of the electronic paper module, resulting in a significant reduction in product yield. On the other hand, in order to eliminate these internal bubbles, a special debubbling process must be added later, which requires the use of professional equipment and a long time to squeeze the gas. Moreover, after debubbling, the edge sealing glue has already solidified, and it is difficult to perform secondary debubbling and glue supplementing due to its hard texture. The product can only be scrapped or repaired, greatly increasing production costs and employee operation burden, and slowing down the production pace. SUMMARY

[0004] To overcome the shortcomings of the prior art, the present application provides an edge sealing glue breakpoint dispensing technology, which solves the problem of bubble cavities caused by glue characteristics, gap and waterproof film edge in traditional edge sealing glue dispensing technology, affecting sealing and display effect.

[0005] To achieve the above purpose, the present application realizes the following technical scheme: an edge sealing glue breakpoint dispensing technology, including straight line breakpoint dispensing breakpoint rule, right angle corner dispensing rule, and round corner dispensing rule; the straight line breakpoint dispensing breakpoint rule includes the following steps:

[0006] S1. Preparation and parameter setting: According to the product edge sealing gap width, material characteristics and glue viscosity, accurately select the dispensing needle nozzle specification, measure the length of the straight line to be dispensed, set the ideal length and gap value of each dispensing line segment according to the product process requirements, input the automatic dispensing equipment control system, and at the same time, fill the edge sealing glue into the dispensing equipment glue barrel, preheat the glue barrel to maintain the edge sealing glue temperature at 25-30℃, reduce the glue viscosity; start the dispensing equipment, adjust the dispensing pressure to the initial range, generally 0.2-0.3MPa, and perform test spraying;

[0007] S2. Straight line dispensing starting operation: accurately position the dispensing head to the starting end of the straight line, and keep a distance from the edge, start the equipment, and start dispensing according to the set length and gap rules; during the dispensing process, keep the dispensing equipment workbench moving at a constant speed, and the speed is controlled at 50-80mm / s;

[0008] S3. Dispensing process monitoring and adjustment: real-time monitoring of dispensing conditions by means of high-definition camera and sensor, automatic comparison of glue drop size, spacing and preset parameters every 5-10 seconds; once it is found that the glue drop is too large or too small, the spacing is uneven, the equipment control system immediately feedbacks, and the dispensing pressure and time are adjusted to make the glue extrusion amount accurately return to the standard range;

[0009] S4. Straight line dispensing finishing processing: a certain distance in advance and gradually reduce the dispensing speed near the end of the straight line, and smoothly complete the last dispensing; after dispensing, keep the dispensing head in place for 2-3 seconds to prevent glue shrinkage.

[0010] Preferably, in step S1 of the straight line breakpoint dispensing breakpoint rule, the ideal length and gap value of each dispensing line segment are set as follows: for conventional products, a "5+2" design is adopted, that is, dispensing 5mm and 2mm empty.

[0011] Preferably, in step S2 of the straight line breakpoint dispensing breakpoint rule, the distance from the edge is 1-2mm.

[0012] Preferably, in step S4 of the straight line breakpoint dispensing breakpoint rule, the certain distance in advance and gradually reducing the dispensing speed is 3-5mm, and the dispensing speed is reduced to 50%-60% of the initial speed.

[0013] Preferably, the right angle corner dispensing rule comprises the following steps:

[0014] S1. Corner pre-processing and equipment adjustment: when the dispensing equipment travels to 8-10 mm away from the vertex of the right-angle corner, automatically reduce the dispensing speed to 60%-70% of the normal speed, slow down the pace of glue extrusion; simultaneously adjust the angle of the dispensing head to 30°-45° to the vertex of the corner, optimize the glue drop point, and accurately cover the key area of the corner; the control system switches to the right-angle corner dispensing exclusive program, and loads the preset corner dispensing parameters;

[0015] S2. Fine dispensing at the vertex of the corner: around the vertex of the right angle, a circular dispensing area is defined with the vertex as the center and a radius of 2-3 mm; in this area, short glue segments are evenly distributed in a ring shape, and the length of the short glue segments is set, while the dispensing pressure is adjusted, and the glue is fully infiltrated into the corner gap for 0.5-1 seconds / segment;

[0016] S3. Corner turning connection dispensing: after completing the vertex dispensing, quickly adjust the dispensing head to a 135°-150° angle with the next edge, and start the dispensing process of the turning edge; use a specific dispensing mode, and gradually restore the dispensing speed from the initial turning to 80%-90% of the normal speed; slightly slow down the dispensing speed in the first 3-5 mm range after the turning;

[0017] S4. Corner dispensing post-checking and glue supplement: immediately after the right-angle corner dispensing is completed, use the laser scanning device built-in the dispensing equipment to quickly check the glue filling situation of the corner and the surrounding area; if cavities, bubbles or insufficient glue are found, automatically backtrack the dispensing head, accurately locate the defect position, and supplement the glue in a low-flow and high-frequency dispensing mode.

[0018] Preferably, in step S2 of the right-angle corner dispensing rule, the short glue segments are evenly distributed in a ring shape in this area, and the length of the short glue segments is set, while the dispensing pressure is adjusted, specifically: 4-6 short glue segments are evenly distributed in a ring shape, each short glue segment is 1-2 mm long, and the dispensing pressure is increased to 0.3-0.4 MPa.

[0019] Preferably, in step S3 of the right-angle corner dispensing rule, the specific dispensing mode is: the "3+1" dispensing mode is used, i.e. dispensing 3 mm and emptying 1 mm.

[0020] Preferably, the round-corner corner dispensing rule comprises the following steps:

[0021] S1. Adapt parameters according to the radius of the round corner: the dispensing equipment sensor automatically identifies the size of the radius of the round corner, and adjusts the dispensing rule according to the size of the radius of the round corner;

[0022] S2. Start and follow the arc operation of dispensing: align the dispensing head vertically with the starting position of the fillet, 1-2 mm away from the edge, and start dispensing; throughout the process, the multi-axis linkage function of the automatic equipment is used to accurately follow the arc trajectory and keep the dispensing head perpendicular to the fillet curve; the dispensing speed is dynamically adjusted according to the curvature of the fillet, and the speed is appropriately slowed down to 40-60 mm / s in areas with large curvature, and the speed is restored to 70-90 mm / s in areas with small curvature;

[0023] S3. Auxiliary penetration and stable glue solution: while dispensing, the equipment slightly vibrates the dispensing head at a frequency of 2-3 times per second, and the vibration intensity is controlled in a very small range to help the glue flow and penetrate in the gap of the curved surface; according to the situation of the fillet, the glue flow rate and temperature are adjusted appropriately, for small radius fillets, the glue flow rate is appropriately reduced to 70%-80% of the normal flow rate, and the glue temperature is increased by 3-5℃ to reduce the viscosity of the glue; for large radius fillets, the flow rate is kept stable, and the glue temperature is adjusted by ±2℃ to improve the filling density;

[0024] S4. Fillet finishing and quality confirmation: reduce the dispensing speed by a certain distance before the end of the fillet, and finish smoothly; after finishing, immediately check the glue filling effect in the fillet area using a high-definition camera and image analysis software.

[0025] Preferably, in step S1 of the fillet corner dispensing rule, the rule for adjusting the dispensing according to the size of the fillet radius is: when the fillet radius R≤5mm, set the dispensing parameters as follows: divide the dispensing section by a central angle of 10°-15°, each section has a length of 2-3mm, and the gap is 0.5-1mm; when 5mm<R≤10mm, use the "4+1.5" rule, i.e. dispense 4mm and leave 1.5mm; if the fillet radius R>10mm, use the straight line "5+2" mode at the beginning and end of the fillet, and divide the arc section into 6-8 equal parts, each part has a length of 3-5mm, and the gap is 1-2mm.

[0026] Preferably, in step S4 of the fillet corner dispensing rule, the dispensing speed is reduced by a certain distance before the end of the fillet, specifically: the dispensing speed is reduced by 3-5mm before the end of the fillet.

[0027] The present application provides a kind of edge sealing glue breakpoint dispensing technology.There are the following beneficial effects:

[0028] 1、The present application provides an edge sealing glue breakpoint dispensing technology, which is a new dispensing technology that replaces traditional dispensing technology, solves the problem of closed bubbles in the dispensing process, reduces the subsequent defoaming process, improves production yield, improves production efficiency and reduces production cost.

[0029] 2、The present application is aimed at the actual situation of production, including straight lines, right angle corners and round angle corners, and sets corresponding glue dispensing rules, which are highly targeted and practical. In the straight line dispensing link, the product edge sealing gap width, material characteristics and glue viscosity are accurately matched with the needle nozzle in the early stage, and the ideal glue dispensing parameters are set. Real-time monitoring and intelligent control are used in the process to ensure uniform and accurate extrusion of glue, and careful handling at the end avoids glue shrinkage, thereby ensuring the high quality and stability of the straight line sealing glue; near the corner, the speed is reduced in advance and the glue dispensing head angle is adjusted skillfully at the right angle corner, the vertex is finely glued to strengthen the sealing, the transition is smooth, and the subsequent check and glue supplement mechanism is also set to perfectly solve the problems of easy air bubbles and uneven glue amount at the corner; the intelligent radius identification system is used to flexibly adapt the glue dispensing rules at the round corner, the multi-axis linkage is used in the whole glue dispensing process, the speed is intelligently adjusted according to the curvature, and the vibration auxiliary and temperature and speed control means are used to ensure smooth filling of the glue on the curved surface, and the end is strictly inspected. The rules complement each other and accurately meet the complex and variable edge sealing requirements of the electronic paper module, thereby greatly improving the adaptability and reliability of the overall glue sealing process. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 The flowchart of the present application is shown in the figure;

[0031] Figure 2 The straight line breakpoint glue dispensing breakpoint rule flowchart of the present application is shown in the figure;

[0032] Figure 3 The right angle corner glue dispensing rule flowchart of the present application is shown in the figure;

[0033] Figure 4 The round corner glue dispensing rule flowchart of the present application is shown in the figure. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be described in detail below with reference to the drawings in the specification of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0035] Embodiment:

[0036] Please refer to the attached Figure 1 -attached Figure 4 The edge sealing glue dispensing technology provided by the embodiments of the present application includes straight line breakpoint glue dispensing breakpoint rules, right angle corner glue dispensing rules and round corner glue dispensing rules.

[0037] The straight line breakpoint glue dispensing breakpoint rule includes the following steps:

[0038] S1. Preparation and parameter setting: According to the product edge sealing gap width, material characteristics and glue viscosity, accurately select the glue dispensing needle nozzle specification to ensure smooth glue extrusion and accurate drop point; measure the length of the straight line to be dispensed, set the ideal length and gap value of each dispensing line segment according to the product process requirements, and the conventional product adopts the "5+2" design, that is, dispensing 5mm and empty 2mm, and input the ideal length and gap value into the automatic dispensing equipment control system. At the same time, the edge sealing glue is loaded into the glue barrel of the dispensing equipment, and the glue barrel is preheated to maintain the temperature of the edge sealing glue at 25-30℃, so as to reduce the viscosity of the glue and facilitate the subsequent stable glue extrusion. Start the dispensing equipment and adjust the dispensing pressure to the initial range, generally 0.2-0.3MPa, and perform test spraying to observe the glue shape and drop point, and fine-tune to uniform glue drop size and accurate drop point;

[0039] S2. Straight line dispensing starting operation: accurately position the dispensing head to the starting end of the straight line, 1-2mm away from the edge, start the equipment, and dispense according to the set length and gap rules; during the dispensing process, keep the dispensing equipment workbench moving at a constant speed, control the speed at 50-80mm / s, ensure uniform and continuous glue extrusion, form regular dispensing line segments, and the glue fully penetrates into the gap;

[0040] S3. Dispensing process monitoring and adjustment: real-time monitoring of dispensing conditions by means of high-definition camera and sensor, automatic comparison of glue drop size, spacing and preset parameters every 5-10 seconds; once the glue drop is found to be too large or too small, the spacing is uneven, the equipment control system immediately feedbacks, fine-tunes the dispensing pressure and time, and makes the glue extrusion amount accurately return to the standard range; at the same time, pay attention to the glue penetration, if the gap is too narrow and the glue penetration is slow, pause the dispensing in time, fine-tune the glue temperature or increase the short pause time to assist the glue penetration;

[0041] S4. Straight line dispensing finishing treatment: gradually reduce the dispensing speed to 50%-60% of the initial speed 3-5mm before the end of the straight line, and smoothly complete the last dispensing; after dispensing, keep the dispensing head in place for 2-3 seconds to prevent glue retraction, ensure that the end glue is full and stable, and there is no gap residue, laying a solid foundation for subsequent processes.

[0042] The right-angle corner dispensing rule comprises the following steps:

[0043] S1. Corner pretreatment and equipment adjustment: when the dispensing equipment is 8-10mm away from the vertex of the right-angle corner, automatically reduce the dispensing speed to 60%-70% of the normal speed to slow down the glue extrusion rhythm; simultaneously adjust the dispensing head angle to 30°-45° towards the vertex of the corner to optimize the glue drop point and accurately cover the key area of the corner; the control system switches to the right-angle corner dispensing exclusive program and loads the preset corner dispensing parameters;

[0044] S2. Corner vertex fine dispensing: Around the right angle vertex, a circular dispensing area is defined with the vertex as the center and a radius of 2-3 mm. Within this area, 4-6 short glue segments are evenly distributed in a ring shape, each with a length of 1-2 mm. The dispensing pressure is increased to 0.3-0.4 MPa, and a short pause of 0.5-1 second per segment is applied to allow the glue to fully soak into the corner gap and spread to the periphery through capillary action, enhancing the sealing performance and structural stability of the vertex.

[0045] S3. Corner transition joint dispensing: After completing the vertex dispensing, quickly adjust the dispensing head to a 135°-150° angle with the next edge and start the dispensing process for the transition edge. Use the "3+1" dispensing mode, which means dispensing for 3 mm and then pausing for 1 mm. Gradually increase the dispensing speed from the initial slow transition to 80%-90% of the normal speed to ensure smooth transition and prevent glue accumulation and flow. Slow down the dispensing speed slightly within the first 3-5 mm of the transition to allow the glue to transition smoothly and fill the small gaps caused by the corner transition.

[0046] S4. Corner dispensing inspection and glue supplement: Immediately after completing the right-angle corner dispensing, use the laser scanning device built into the dispensing equipment to quickly check the glue filling situation in the corner and surrounding area. If cavities, bubbles, or insufficient glue are found, automatically backtrack the dispensing head, accurately locate the defect position, and supplement the glue with low flow and high frequency dispensing. After supplementing the glue, scan again to confirm that the quality standards are met.

[0047] The round corner dispensing rule includes the following steps:

[0048] S1. Adapt parameters according to the round radius: The dispensing equipment sensor automatically identifies the round radius size. When the round radius R ≤ 5 mm, set the dispensing parameters as follows: divide the dispensing segments at intervals of 10°-15°, with each segment having a length of 2-3 mm and a gap of 0.5-1 mm. When 5 mm < R ≤ 10 mm, use the "4+1.5" rule, which means dispensing for 4 mm and then pausing for 1.5 mm. If the round radius R > 10 mm, use the straight line "5+2" mode for the starting and ending segments of the round corner, and divide the middle arc segment into 6-8 equal parts, with each part having a dispensing length of 3-5 mm and a gap of 1-2 mm.

[0049] S2. Dispensing starting and following arc operation: Align the dispensing head vertically with the starting position of the round corner, 1-2 mm away from the edge, and start dispensing. Throughout the process, use the multi-axis linkage function of the automated equipment to accurately follow the round corner arc trajectory, keeping the dispensing head perpendicular to the round corner curve. Adjust the dispensing speed dynamically according to the round corner curvature, slowing down appropriately to 40-60 mm / s in areas with high curvature and restoring to 70-90 mm / s in areas with low curvature to ensure uniform and smooth distribution of the glue.

[0050] S3. Auxiliary penetration and stable glue solution: while dispensing, the device slightly vibrates the dispensing head at a frequency of 2-3 times per second, the vibration intensity is controlled in a very small range, and the auxiliary glue solution flows and penetrates in the curved gap; according to the corner situation, the glue flow rate and temperature are adjusted appropriately, for small radius corners, the glue flow rate is appropriately reduced to 70%-80% of the conventional flow rate, and the glue temperature is increased by 3-5℃, the glue viscosity is reduced; for large radius corners, the flow rate is kept stable, the glue temperature is adjusted by ±2℃, and the filling density is improved;

[0051] S4. Corner finishing and quality confirmation: reduce the dispensing speed by 3-5mm before the end of the corner, and finish smoothly; immediately after finishing, use high-definition camera and image analysis software to check the glue filling effect in the corner area, if there are problems such as discontinuous glue and bubbles, automatically execute local glue supplementing program until the glue fills the corner gap completely and uniformly, meeting the product edge sealing quality requirements.

[0052] Comparative experiment:

[0053] I. Experimental purpose:

[0054] Through the comparative experiment, the advantages of the edge sealing glue breakpoint dispensing technology (including straight line breakpoint dispensing rule, right angle corner dispensing rule, and corner dispensing rule) of the present application compared with the traditional dispensing technology in the bubble generation rate, dispensing accuracy, production efficiency and product yield, etc. Key indicators are intuitively displayed, providing data support for technology popularization and application.

[0055] II. Experimental materials and equipment:

[0056] Materials: Prepare several electronic paper display modules of the same batch and specification for simulation of actual production products; select electronic paper production special edge sealing glue to ensure consistent glue batch and performance; waterproof film material meets the electronic paper module packaging requirements, the edge is treated by laser cutting to simulate actual working conditions.

[0057] Equipment: Two high-precision automatic dispensing equipment, one equipped with the breakpoint dispensing technology program of the present application, the other for traditional linear dispensing; several high-definition cameras for monitoring and recording dispensing conditions throughout the process; laser scanning device for detecting gap filling after dispensing; electron microscope for assisting in viewing fine bubbles and glue penetration details; high-precision timer for recording operation time; electronic balance for weighing dispensing amount; constant temperature oven for maintaining constant experimental environment temperature (set at 25℃).

[0058] III. Experimental steps:

[0059] Number all the electronic paper modules to be dispensed, and randomly divide them into experimental group (adopting the breakpoint dispensing technology of the present application) and control group (adopting the traditional dispensing technology), each group has 30 module samples, to ensure the randomness and representativeness of the samples.

[0060] The edge sealing glue is respectively filled into the corresponding glue tank of the dispensing equipment, the experimental group glue tank is preheated to 25-30°C according to the technical requirements, and the control group glue tank is maintained at room temperature; the initial parameters of the dispensing equipment are adjusted, and the experimental group is set according to the linear strip "5+2", right angle corner and round corner rules set in the previous stage, and the control group is set as the conventional pressure (0.3-0.4 MPa) and uniform speed (80-100 mm / s) of linear dispensing.

[0061] Four, dispensing operation:

[0062] Linear strip dispensing:

[0063] Experimental group: according to the linear strip breakpoint dispensing breakpoint rule, the dispensing head is accurately positioned at 1-2 mm of the starting end of the linear strip, and is dispensed at a speed of 50-80 mm / s and in "5+2" mode; every 5-10 seconds, the equipment adjusts the parameters according to the feedback of the high-definition camera and sensor; 3-5 mm away from the end, the speed is reduced to 25-30 mm / s, and after the end, it is stopped for 2-3 seconds.

[0064] Control group: uniformly dispensed from the starting end of the straight line at a speed of 80-100 mm / s, without breakpoints, and the glue was continuously extruded until the end of the straight line.

[0065] Right angle corner dispensing:

[0066] Experimental group: when 8-10 mm away from the right angle corner, the equipment automatically reduces the speed to 24-28 mm / s, and the dispensing head is inclined at 30°-45°; at the vertex, 4-6 1-2 mm short glue segments are evenly distributed in a 2-3 mm radius ring, the pressure is increased to 0.3-0.4 MPa, and the pause is 0.5-1 second / segment; after turning, use "3+1" mode and gradually increase the speed.

[0067] Control group: no speed reduction or special operation at the corner, directly pass through according to the linear dispensing speed and mode, and rely on the natural flow of the glue to cover the corner.

[0068] Round corner dispensing:

[0069] Experimental group: the equipment recognizes the radius of the round corner, sets the parameters according to the rules, such as R≤5mm according to the sector angle 10°-15°, the dispensing speed is 40-60 mm / s (when the curvature is large) or 70-90 mm / s (when the curvature is small), and the dispensing head is vibrated synchronously; other radii are operated according to the corresponding rules.

[0070] Control group: uniformly dispensed at a speed of 80-100 mm / s around the round corner, without subdivision strategy.

[0071] Five, detection and data recording:

[0072] After dispensing, immediately check the gap filling of each module of the module group by using a laser scanning device, count the number of bubbles and the volume of cavities; observe the corners and fine gaps under an electron microscope, accurately judge the penetration depth and continuity of the glue; weigh the glue barrel before and after dispensing by using an electronic balance, calculate the actual dispensing amount; record the dispensing trajectory by using a high-definition camera, analyze the dispensing accuracy (glue drop size and spacing consistency).

[0073] Record the dispensing time of each module in each group from starting the equipment to completing all dispensing actions; count the number of modules that need to be repaired due to defects such as bubbles and insufficient glue; put the finished product modules into a reliability test device in a simulated use environment, run for 100 hours, record the number of modules that fail due to edge sealing problems, and calculate the yield.

[0074] Six, experimental results:

[0075]

[0076]

[0077] From the experimental results, it can be seen that the edge sealing glue breakpoint dispensing technology of the present application is significantly better than the traditional dispensing technology in reducing bubble generation, improving dispensing accuracy, reducing dispensing time, reducing repair amount and improving product yield, which effectively verifies the advantages and practical value of the new technology. It should be noted that the values may fluctuate slightly due to slight differences in materials and equipment in actual production application, but the trend remains unchanged.

[0078] Although embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and alterations can be made thereto without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A technique for applying edge-sealing adhesive at discontinuous points, characterized in that, This includes rules for dispensing adhesive at breakpoints on straight lines, rules for dispensing adhesive at right angles, and rules for dispensing adhesive at rounded corners; the rules for dispensing adhesive at breakpoints on straight lines include the following steps: S1. Preliminary Preparation and Parameter Setting: Based on the product's edge sealing gap width, material characteristics, and adhesive viscosity, accurately select the dispensing nozzle specification, measure the length of the straight line to be dispensed, and, in conjunction with the product's process requirements, set the ideal length and gap value for each dispensing segment. Enter this information into the automated dispensing equipment control system. Simultaneously, load the edge sealing adhesive into the dispensing equipment's glue tank, preheat the tank to maintain the adhesive temperature at 25-30℃, and reduce the adhesive viscosity. Start the dispensing equipment, adjust the dispensing pressure to the initial range, generally 0.2-0.3MPa, and conduct a test spray. S2. Starting operation of straight line dispensing: Precisely position the dispensing head at the starting end of the straight line and keep it at a distance from the edge. Start the equipment and begin dispensing according to the set length and gap rules. During the dispensing process, keep the dispensing equipment table moving at a constant speed, and control the speed at 50-80mm / s. S3. Dispensing process monitoring and adjustment: The dispensing situation is monitored in real time with the help of high-definition cameras and sensors. Every 5-10 seconds, the size and spacing of the glue droplets are automatically compared with the preset parameters. Once the glue droplets are found to be too large or too small, or the spacing is uneven, the equipment control system immediately provides feedback and fine-tunes the dispensing pressure and time so that the glue extrusion volume accurately returns to the standard range. S4. Finishing treatment for straight line dispensing: When approaching the end of the straight line, reduce the dispensing speed gradually at a certain distance in advance to smoothly complete the last section of dispensing; after dispensing, keep the dispensing head in place for 2-3 seconds to prevent the adhesive from shrinking back.

2. The edge sealing adhesive dispensing technique according to claim 1, characterized in that, In step S1 of the rule for dispensing discontinuity of straight lines, the ideal length and gap value of each dispensing line segment are set as follows: conventional products adopt a "5+2" design, that is, 5mm of dispensing and 2mm of gap.

3. The edge sealing adhesive dispensing technique according to claim 1, characterized in that, In step S2 of the rule for dispensing adhesive breaks at the breakpoints of the straight lines, the distance from the edge is specifically 1-2 mm.

4. The edge sealing adhesive dispensing technique according to claim 1, characterized in that, In step S4 of the straight line breakpoint dispensing breakpoint rule, the step of advancing a certain distance and gradually reducing the dispensing speed specifically means: advancing 3-5mm and reducing the dispensing speed to 50%-60% of the initial speed.

5. The edge sealing adhesive dispensing technique according to claim 1, characterized in that, The right-angle corner dispensing rules include the following steps: S1. Corner Pre-processing and Equipment Adjustment: When the dispensing equipment travels to 8-10mm from the apex of the right-angle corner, it automatically reduces the dispensing speed to 60%-70% of the normal speed, slowing down the adhesive extrusion rhythm; simultaneously, it adjusts the dispensing head angle to tilt it 30°-45° towards the corner apex, optimizing the adhesive landing point and accurately covering the key area of ​​the corner; the control system switches to the right-angle corner dispensing program and loads the preset corner dispensing parameters; S2. Fine dispensing at corner vertices: Around the right-angle vertex, define a circular dispensing area with a radius of 2-3mm, centered on the vertex; within this area, distribute short adhesive segments evenly in a ring, set the length of the short adhesive segments, and adjust the dispensing pressure, pausing briefly for 0.5-1 seconds per segment to allow the adhesive to fully saturate the corner gaps; S3. Corner transition and dispensing: After completing the dispensing at the apex, quickly adjust the dispensing head to form an angle of 135°-150° with the next edge and start the dispensing process after the transition; using the specific dispensing pattern, the dispensing speed gradually recovers from the initial slow speed of the transition to 80%-90% of the normal speed; in the first 3-5mm range after the transition, slightly slow down the dispensing speed. S4. Corner dispensing inspection and touch-up: The moment the right-angle corner dispensing is completed, the laser scanning device built into the dispensing equipment is used to quickly check the glue filling status of the corner and surrounding area; if cavities, air bubbles or insufficient glue are found, the dispensing head is automatically traced back to accurately locate the defect and touch up the glue using a low-flow, high-frequency dispensing method.

6. The edge sealing adhesive dispensing technique according to claim 5, characterized in that, In step S2 of the right-angle corner dispensing rule, short adhesive segments are evenly distributed in a ring within this area, and the length of the short adhesive segments is set while the dispensing pressure is adjusted. Specifically, 4-6 short adhesive segments are evenly distributed in a ring, each with a length of 1-2 mm, and the dispensing pressure is increased to 0.3-0.4 MPa.

7. The edge sealing adhesive dispensing technique according to claim 5, characterized in that, In step S3 of the right-angle corner dispensing rule, the specific dispensing pattern is as follows: the "3+1" dispensing pattern is used, that is, dispensing 3mm of glue and leaving 1mm of space.

8. The edge sealing adhesive dispensing technique according to claim 1, characterized in that, The rules for applying adhesive to rounded corners include the following steps: S1. Adapting parameters based on fillet radius: The dispensing equipment sensor automatically identifies the fillet radius size and adjusts the dispensing rules accordingly; S2. Dispensing Start and Following Curve Operation: Align the dispensing head vertically with the starting position of the rounded corner, 1-2mm from the edge, and start dispensing; throughout the process, utilize the multi-axis linkage function of the automated equipment to precisely follow the rounded corner's curvature trajectory, keeping the dispensing head perpendicular to the rounded corner surface; the dispensing speed is dynamically adjusted according to the curvature of the rounded corner, appropriately slowing down to 40-60mm / s for areas with large curvature and restoring to 70-90mm / s for areas with small curvature; S3. Assisting in Penetration and Stabilizing Adhesive: During dispensing, the equipment slightly vibrates the dispensing head at a frequency of 2-3 times per second, with the vibration intensity controlled within a very small range, to assist the adhesive in flowing and penetrating through the curved surface gaps; the adhesive flow rate and temperature are adjusted appropriately according to the rounded corners. For small radius rounded corners, the adhesive flow rate is appropriately reduced to 70%-80% of the normal flow rate, and the adhesive temperature is increased by 3-5℃ to reduce the adhesive viscosity; for large radius rounded corners, the flow rate is kept stable, and the adhesive temperature is finely adjusted by ±2℃ to improve the filling density; S4. Rounding and Quality Confirmation: Near the end of the rounding, reduce the dispensing speed at a certain distance in advance to smoothly finish; after finishing, immediately use a high-definition camera and image analysis software to check the filling effect of the adhesive in the rounding area.

9. The edge sealing adhesive dispensing technique according to claim 8, characterized in that, In step S1 of the round-corner dispensing rule, the rule for adjusting dispensing according to the size of the round-corner radius is as follows: when the round-corner radius R ≤ 5 mm, the dispensing parameters are set as follows: the dispensing segments are divided at an interval of a central angle of 10° - 15°, the length of each dispensing segment is 2 - 3 mm, and the gap is 0.5 - 1 mm; when 5 mm < R ≤ 10 mm, the "4 + 1.5" rule is enabled, that is, dispense for 4 mm and leave 1.5 mm empty; if the round-corner radius R > 10 mm, in the starting and ending segments of the round corner, the "5 + 2" straight-line pattern is adopted, and in the middle arc segment, the dispensing line segments are evenly divided into 6 - 8 equal parts, and the length of each dispensing part is flexibly adjusted according to the arc length, maintaining 3 - 5 mm, and the gap is 1 - 2 mm.

10. The edge sealing adhesive dispensing technique according to claim 8, characterized in that, In step S4 of the round-corner dispensing rule, reducing the dispensing speed a certain distance in advance near the end of the round corner is specifically: 3 - 5 mm near the end of the round corner.

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