LCD display screen processing alignment and pressing equipment

Abstract

The present application relates to LCD display screen processing equipment technical field, especially to a kind of LCD display screen processing alignment press bonding equipment, comprising: workbench, table top is equipped with conveying belt, conveying belt is equipped with lower plate adsorption positioning table along conveying direction interval;Die sleeve, outer wall is equipped with negative pressure interface and glue interface, die sleeve is equipped with with lower plate adsorption positioning table insertion joint cooperation's through-hole, the side wall of through-hole is equipped with negative pressure hole and glue hole;Movable frame, it can be horizontally moved on workbench;Upper plate adsorption pressing head, it is liftable and set on movable frame, upper plate adsorption pressing head is inserted with through-hole joint cooperation;The cavity formed by the cavity of through-hole inner wall, upper plate adsorption pressing head and lower plate adsorption positioning table is communicated with negative pressure hole or glue hole.The LCD display screen processing alignment press bonding equipment of the present application cleverly constructs closed operation cavity by the cooperation of die sleeve and other components, eliminates the possibility of bubble generation when glue injection press bonding, improves product yield and production continuity.

Description

Technical Field

[0001] This invention relates to the field of LCD display processing equipment technology, and in particular to an LCD display processing alignment and pressing equipment. Background Technology

[0002] Alignment and pressing is a crucial step in the LCD display manufacturing process. The alignment accuracy between the lower and upper panels, the pressing environment, and the uniformity of adhesive application directly affect the product's quality. The structure of LCD display alignment and pressing equipment can be referenced in Chinese Utility Model Patent Publication No. CN208596263U, entitled "Alignment and Pressing Device for LCD Screen Processing," or Chinese Utility Model Patent Publication No. CN220825944U, also entitled "Alignment and Pressing Device for LCD Screen Processing." To improve the pressing effect between the lower and upper panels, manufacturers typically use methods such as vibration or rolling to remove air bubbles, or pre-pressing followed by tightening to improve pressing uniformity. However, methods like vibration can lead to alignment deviations, making it difficult to guarantee processing consistency. Using graded processing methods like pre-pressing followed by tightening also reduces processing efficiency, and the transfer between processes can easily introduce air bubbles and impurities, thus reducing the product qualification rate. Furthermore, due to the low coordination of the mechanisms, it is difficult to meet the needs of continuous and integrated production. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a continuous and efficient LCD display screen processing alignment and pressing equipment, which can effectively eliminate pressing air bubbles and improve the pressing effect.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: an LCD display screen processing alignment and pressing device, comprising: The workbench has a conveyor belt on its surface. The conveyor belt has lower plate adsorption positioning tables spaced along the conveying direction. The lower plate adsorption positioning tables are used to position the lower plate body. The conveyor belt has an annular groove around the lower plate adsorption positioning tables. The mold sleeve is height-adjustable and mounted on the worktable. The mold sleeve is inserted into the annular groove. The outer wall of the mold sleeve is provided with a negative pressure interface and a glue application interface. The mold sleeve is provided with a through hole that is inserted into the lower plate adsorption positioning table. The side wall of the through hole is provided with a negative pressure hole and a glue application hole. The negative pressure hole and the glue application hole are arranged in an up-down manner. The inside of the mold sleeve is provided with a negative pressure channel and a glue application channel. The negative pressure channel is connected to the negative pressure interface and the negative pressure hole respectively. The glue application channel is connected to the glue application interface and the glue application hole respectively. The movable frame can move horizontally on the worktable; The upper plate suction press head is mounted on the movable frame in a height-adjustable manner. The upper plate suction press head is used to position the upper plate body and is inserted into the through hole. The cavity formed by the inner wall of the through hole, the upper plate adsorption pressing head, and the lower plate adsorption positioning platform is connected to the negative pressure hole or the glue application hole.

[0005] Optionally, the inner wall of the through hole is provided with an elastic sealing protective layer, which is interference-fitted with the upper plate adsorption pressing head and the lower plate adsorption positioning stage.

[0006] Optionally, the elastic sealing protective layer is interference-fitted with the upper plate body and the lower plate body, and the cavity formed by the inner wall of the through hole, the upper plate body and the lower plate body is connected to the negative pressure hole or the glue application hole.

[0007] Optionally, the side walls of the upper plate adsorption pressing head and the lower plate adsorption positioning stage are provided with elastic sealing gaskets, and the elastic sealing gaskets are interference-fitted with the inner wall of the through hole.

[0008] Optionally, the gluing interface includes a glue inlet interface and a glue outlet interface, the gluing hole includes a glue inlet hole and a glue outlet hole, both of which are connected to the cavity, and the gluing channel includes a glue inlet channel and a glue outlet channel, the glue inlet channel being connected to the glue inlet interface and the glue inlet hole respectively, and the glue outlet channel being connected to the glue outlet interface and the glue outlet hole respectively.

[0009] Optionally, the outer wall of the mold sleeve is provided with a dust removal port, the side wall of the through hole is provided with a dust removal hole, the interior of the mold sleeve is provided with a dust removal channel, the dust removal channel is connected to the dust removal port and the dust removal hole respectively, and the cavity is connected to the dust removal hole, the negative pressure hole or the glue application hole.

[0010] Optionally, the worktable is equipped with a translation frame and a cleaning roller. The mold sleeve is elliptical and mounted on the translation frame. The mold sleeve is inserted into the cleaning roller. The surface of the cleaning roller is provided with a cleaning layer, and the cleaning layer is interference-fitted with the through hole.

[0011] Optionally, the workbench is provided with a first crossbeam and a second crossbeam placed horizontally above the conveyor belt. Two sets of movable frames are slidably arranged on the first crossbeam. A material rack for holding the upper plate body is provided on each side of the workbench located on the conveyor belt. Two sets of translation frames are slidably arranged on the second crossbeam. A cleaning roller is provided on each side of the workbench located on the conveyor belt.

[0012] Optionally, valves are provided at both the negative pressure port and the glue application port.

[0013] Optionally, the mobile frame is equipped with a lifting frame, and the upper plate adsorption pressing head is connected to the lifting frame through a damping overpressure protection component.

[0014] The beneficial effects of this invention are as follows: An LCD display screen processing alignment and pressing device, the key concept of which is to realize the continuous conveying of the lower plate body through a conveyor belt, the lower plate adsorption positioning table to ensure the initial positioning accuracy of the lower plate body, the insertion and cooperation of the mold sleeve with the annular groove and the lower plate adsorption positioning table, and the insertion and cooperation of the upper plate adsorption pressing head with the through hole, to construct a closed cavity that can perform high-precision glue injection and pressing, and the negative pressure hole and the glue injection hole are arranged in an up-down manner to realize the rapid and continuous switching of vacuuming and glue injection in the cavity. In use, the lower plate adsorption positioning platform of the conveyor belt carries the lower plate body to the processing station; the mold sleeve descends and inserts into the annular groove of the conveyor belt, while the lower plate adsorption positioning platform inserts into the through hole of the mold sleeve from below; after the moving frame controls the upper plate adsorption pressing head to move and pick up the material, the upper plate adsorption pressing head is moved to directly above the through hole, the upper plate adsorption pressing head descends and inserts into the upper end of the through hole, together with the lower plate adsorption positioning platform to form a closed cavity; first, a vacuum operation is performed to connect the cavity with the negative pressure hole, and the negative pressure hole is connected to the external negative pressure device through the negative pressure channel and negative pressure interface. First, the air in the cavity is extracted. Then, the mold sleeve is moved vertically to offset the negative pressure hole from the cavity, and the glue application hole is moved to a position communicating with the cavity. The glue application hole is connected to the glue supply equipment through the glue application channel and glue application interface to inject glue into the cavity. After the glue is injected, the upper plate adsorbs the pressing head to apply pressure, so as to press the lower plate body and the upper plate body together. After pressing, the mold sleeve is completely removed, and the pressed lower plate body and the upper plate body are continued to be transported by the conveyor belt for the next processing. Repeating the above steps can achieve continuous and efficient production. The LCD display screen processing alignment and pressing equipment of this invention cleverly constructs a closed working cavity through the coordinated cooperation of components such as the mold sleeve. The mold sleeve has negative pressure and glue injection functions, reducing the contact between glue and air, eliminating the possibility of air bubbles being generated during glue injection and pressing of the lower and upper main bodies, and improving product yield. The insertion and fit of the mold sleeve and each component are precise and stable, avoiding deviations during the transfer process and ensuring the accuracy of the alignment and pressing operation. The equipment integrates alignment, vacuuming, glue injection, and pressing processes, reducing the number of equipment and process transfers, improving production efficiency, adapting to continuous conveying, and meeting the needs of large-scale mass production. Compared with the existing multi-mechanism or multi-equipment processes that complete alignment, glue injection, and pressing processes separately, it not only reduces the equipment footprint but also simplifies the production process. In continuous production, it can ensure the consistency of the environment of each process, avoid the introduction of air bubbles and impurities, and improve the product qualification rate. Attached Figure Description

[0015] Figure 1 A schematic diagram of a fitting and laminating equipment for LCD display screen manufacturing; Figure 2 This is a schematic diagram of the cavity structure; Figure 3 This is a structural diagram of the dust removal stage; Figure 4 This is a schematic diagram of the structure during the negative pressure stage; Figure 5 This is a structural diagram of the glue injection stage; Figure 6 This is a schematic diagram of the mold structure; Figure 7 Front view of the LCD display screen alignment and lamination equipment; Figure 8 A partial cross-sectional view of the LCD display screen alignment and pressing equipment from the side; Label Explanation: 1. Workbench; 11. Translation frame; 12. Cleaning roller; 13. First crossbeam; 14. Second crossbeam; 15. Material rack; 2. Conveyor belt; 21. Lower plate adsorption positioning platform; 22. Annular groove; 3. Lower plate main body; 4. Mold sleeve; 41. Negative pressure interface; 42. Glue application interface; 421. Glue inlet interface; 422. Glue outlet interface; 43. Through hole; 431. Negative pressure hole; 432. Glue application hole; 4321. Glue inlet hole; 4322. Glue outlet hole; 433. Elastic sealing protective layer; 434. Dust removal hole; 44. Negative pressure channel; 45. Glue application channel; 451. Glue inlet channel; 452. Glue outlet channel; 46. Dust removal port; 47. Dust removal channel; 5. Moving frame; 51. Lifting frame; 6. Upper plate adsorption pressing head; 61. Elastic sealing protective pad; 7. Upper plate main body; 8. Cavity; 9. Chamber. Detailed Implementation

[0016] To explain in detail the technical content, objectives, and effects of the present invention, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0017] Please refer to Figures 1 to 8 As shown, an LCD display screen processing alignment and pressing device of the present invention includes: The workbench 1 has a conveyor belt 2 on its surface. The conveyor belt 2 has lower plate adsorption positioning tables 21 spaced along the conveying direction. The lower plate adsorption positioning tables 21 are used to position the lower plate body 3. The conveyor belt 2 has an annular groove 22 surrounding the lower plate adsorption positioning tables 21. The mold sleeve 4 is height-adjustable and is mounted on the worktable 1. The mold sleeve 4 is inserted into the annular groove 22. The outer wall of the mold sleeve 4 is provided with a negative pressure interface 41 and a glue application interface 42. The mold sleeve 4 is provided with a through hole 43 that is inserted into the lower plate adsorption positioning table 21. The side wall of the through hole 43 is provided with a negative pressure hole 431 and a glue application hole 432. The negative pressure hole 431 and the glue application hole 432 are arranged in an up-down manner. The interior of the mold sleeve 4 is provided with a negative pressure channel 44 and a glue application channel 45. The negative pressure channel 44 is connected to the negative pressure interface 41 and the negative pressure hole 431 respectively. The glue application channel 45 is connected to the glue application interface 42 and the glue application hole 432 respectively. The movable frame 5 can move horizontally on the worktable 1; The upper plate adsorption pressing head 6 is raised and lowered on the movable frame 5. The upper plate adsorption pressing head 6 is used to position the upper plate body 7. The upper plate adsorption pressing head 6 is inserted and engaged with the through hole 43. The cavity 8 formed by the inner wall of the through hole 43, the upper plate adsorption pressing head 6, and the lower plate adsorption positioning platform 21 is connected to the negative pressure hole 431 or the glue application hole 432.

[0018] The key concept of the above-mentioned LCD display processing alignment and pressing equipment is as follows: the lower plate body 3 is continuously transported by the conveyor belt 2, the lower plate adsorption positioning table 21 is used to ensure the initial positioning accuracy of the lower plate body 3, the mold sleeve 4 is connected to the annular groove 22, the lower plate adsorption positioning table 21, and the upper plate adsorption pressing head 6 is connected to the through hole 43, thus constructing a closed cavity 8 that can perform high-precision glue injection and pressing. The negative pressure hole 431 and the glue injection hole 432 are arranged in an up-down manner to realize the rapid and continuous switching between vacuuming and glue injection in the cavity 8.

[0019] The working principle of the above-mentioned LCD display screen processing alignment and pressing equipment is as follows: During use, the lower plate adsorption positioning table 21 of the conveyor belt 2 carries the lower plate body 3 to the processing station; the mold sleeve 4 descends and inserts into the annular groove 22 of the conveyor belt 2, while the lower plate adsorption positioning table 21 inserts into the through hole 43 of the mold sleeve 4 from below; after the moving frame 5 controls the upper plate adsorption pressing head 6 to move and pick up the material, the upper plate adsorption pressing head 6 is moved to directly above the through hole 43, the upper plate adsorption pressing head 6 descends and inserts into the upper end of the through hole 43, together with the lower plate adsorption positioning table 21 to form a closed cavity 8; firstly, a vacuum operation is performed to connect the cavity 8 with the negative pressure hole 431, and the negative pressure hole 431 is connected by a negative pressure hole. The negative pressure device is connected to the pressure channel 44 and negative pressure interface 41 to extract the air from the cavity 8. Then, the mold sleeve 4 is moved vertically so that the negative pressure hole 431 is offset from the cavity 8, and the glue application hole 432 is moved to a position communicating with the cavity 8. The glue application hole 432 is connected to the glue supply device through the glue application channel 45 and glue application interface 42 to inject glue into the cavity 8. After the glue is injected, the upper plate adsorbs the pressing head 6 to apply pressure, so as to press the lower plate body 3 and the upper plate body 7 together. After pressing, the mold sleeve 4 is completely removed, and the pressed lower plate body 3 and upper plate body 7 are continued to be transported by the conveyor belt 2 for the next processing. Repeating the above steps can achieve continuous and efficient production.

[0020] The beneficial effects described above are as follows: a closed working cavity 8 is cleverly constructed through the coordinated cooperation of components such as the mold sleeve 4. The mold sleeve 4 has negative pressure and glue injection functions, which reduces the contact between glue and air, eliminates the possibility of air bubbles being generated when the lower plate body 3 and the upper plate body 7 are glued and pressed together, and improves the product yield. The insertion and matching of the mold sleeve 4 with each component is precise and stable, avoiding deviations during the transfer process and ensuring the accuracy of the alignment and pressing operation. The equipment integrates alignment, vacuuming, glue injection, and pressing processes, reducing the number of equipment and process transfers, improving production efficiency, adapting to continuous conveying, and meeting the needs of large-scale mass production. Compared with the existing multi-mechanism or multi-equipment processes that complete alignment, glue injection, and pressing processes separately, it not only reduces the equipment footprint but also simplifies the production process. In continuous production, it can ensure the consistency of the environment of each process, avoid the introduction of air bubbles, impurities, etc., and improve the product qualification rate.

[0021] Preferably, the inner wall of the through hole 43 is provided with an elastic sealing protective layer 433, and the elastic sealing protective layer 433 is interference-fitted with the upper plate adsorption pressing head 6 and the lower plate adsorption positioning stage 21.

[0022] The beneficial effects described above are: an elastic sealing protective layer 433 is provided on the inner wall of the through hole 43. The elastic sealing protective layer 433 has holes corresponding to the negative pressure and glue injection positions. By utilizing the deformation characteristics of the elastic material, the protective layer forms an interference fit with the upper plate adsorption pressing head 6 and the lower plate adsorption positioning stage 21, filling the gap between the components and improving the sealing performance of the cavity 8.

[0023] The specific working principle is as follows: When the upper plate adsorption pressing head 6 and the lower plate adsorption positioning stage 21 are inserted into the through hole 43, they compress the elastic sealing protective layer 433. The protective layer undergoes elastic deformation, tightly adhering to the outer wall of the upper plate adsorption pressing head 6 and the outer wall of the lower plate adsorption positioning stage 21, eliminating gaps between components and ensuring that there is no air or glue leakage in the cavity 8 during vacuuming or glue injection. This solves the sealing gap problem caused by component processing errors, improves the sealing performance of the cavity 8, and ensures the vacuuming effect and glue injection uniformity. Furthermore, the elastic material can buffer the impact force during the insertion process, protecting the upper plate adsorption pressing head 6 and the lower plate adsorption positioning stage 21, and extending the service life of the equipment.

[0024] Preferably, the elastic sealing protective layer 433 is interference-fitted with the upper plate body 7 and the lower plate body 3, and the cavity 9 formed by the inner wall of the through hole 43, the upper plate body 7 and the lower plate body 3 is connected to the negative pressure hole 431 or the glue application hole 432.

[0025] The beneficial effects described above are: further optimizing the size of the elastic sealing protective layer 433 so that it not only matches the adsorption positioning component, but also has an interference fit with the upper plate body 7 and the lower plate body 3, extending the sealing range to the plate itself, forming a double sealing structure, further improving the sealing performance of the chamber 9, and reducing the difficulty of removing the glue from the product edges in the future.

[0026] The specific working principle is as follows: After the upper plate adsorption pressing head 6, carrying the upper plate body 7, and the lower plate adsorption positioning platform 21, carrying the lower plate body 3, are inserted into the through hole 43, the elastic sealing protective layer 433 simultaneously makes an interference fit with the edges of the upper plate body 7 and the lower plate body 3, so that the sealing surface of the chamber 9 covers the "inner wall of the through hole 43 - edge of the plate body - adsorption positioning component", forming a fully enclosed space. The double sealing structure completely eliminates air leakage and glue leakage in the chamber 9, which is especially suitable for the processing of ultra-thin LCD displays with extremely high sealing requirements; it prevents glue from seeping out from the gap between the plate body and the adsorption positioning component, reduces the amount of residual glue cleaning work, and improves the appearance quality of the product.

[0027] Preferably, the side walls of the upper plate adsorption pressing head 6 and the lower plate adsorption positioning table 21 are provided with elastic sealing protective pads 61, and the elastic sealing protective pads 61 are interference fit with the inner wall of the through hole 43.

[0028] The beneficial effects described above are: the sealing structure is transferred from the inner wall of the through hole 43 to the side wall of the upper plate adsorption pressing head 6 and the lower plate adsorption positioning stage 21. By setting an elastic sealing protective pad 61 on the side wall, the sealing is achieved by the interference fit between the protective pad and the inner wall of the through hole 43, while simplifying the processing difficulty of the mold sleeve 4.

[0029] The specific working principle is as follows: When the upper plate adsorption pressing head 6 and the lower plate adsorption positioning stage 21 are inserted into the through hole 43, the elastic sealing protective gasket 61 on the side wall comes into close contact with the inner wall of the through hole 43. The protective gasket deforms under pressure, filling the gap between the inner wall of the through hole 43 and the adsorption positioning component, thus sealing the cavity 8. The inner wall of the through hole 43 of the mold sleeve 4 does not require complex sealing structure processing, reducing the manufacturing difficulty and cost of the mold sleeve 4; the elastic sealing protective gasket 61 can be replaced individually. When the protective gasket is worn, it is not necessary to replace the entire mold sleeve 4 or the adsorption positioning component, reducing maintenance costs; the protective gasket directly adheres to the adsorption positioning component, which can specifically protect the easily worn parts of the component.

[0030] Preferably, the glue application interface 42 includes a glue inlet interface 421 and a glue outlet interface 422, the glue application hole 432 includes a glue inlet hole 4321 and a glue outlet hole 4322, the glue inlet hole 4321 and the glue outlet hole 4322 are simultaneously connected to the cavity 8, the glue application channel 45 includes a glue inlet channel 451 and a glue outlet channel 452, the glue inlet channel 451 is connected to the glue inlet interface 421 and the glue inlet hole 4321 respectively, and the glue outlet channel 452 is connected to the glue outlet interface 422 and the glue outlet hole 4322 respectively.

[0031] The beneficial effects described above are: dividing the glue application interface 42, glue application hole 432, and glue application channel 45 into two groups of inlet and outlet, so that after the glue enters the cavity 8 from the glue inlet hole 4321, it can flow out from the glue outlet hole 4322, forming a circulating glue injection, ensuring that the glue fills the cavity 8 evenly, and at the same time expelling the air or impurities remaining in the cavity 8.

[0032] The specific working principle is as follows: During glue injection, the glue supply equipment delivers glue to the glue inlet 4321 through the glue inlet interface 421 and the glue inlet channel 451. After the glue enters the cavity 8, it diffuses along the cavity 8. At the same time, air or excess glue in the cavity 8 flows out from the glue outlet 4322, and is discharged to the recycling equipment through the glue outlet channel 452 and the glue outlet interface 422. When pure glue (free of bubbles and impurities) flows out of the glue outlet 4322, the glue inlet and outlet valves are closed, completing the glue injection. This solves the problem of glue accumulation and bubble residue that easily occurs in single-hole glue injection, achieving uniform glue distribution. The glue outlet channel 452 can recycle excess glue, reducing raw material waste. By observing the glue discharge status, it is possible to determine whether the glue injection in the cavity 8 is complete, improving processing controllability.

[0033] Preferably, the outer wall of the mold sleeve 4 is provided with a dust removal port 46, the side wall of the through hole 43 is provided with a dust removal hole 434, the interior of the mold sleeve 4 is provided with a dust removal channel 47, the dust removal channel 47 is connected to the dust removal port 46 and the dust removal hole 434 respectively, and the cavity 8 is connected to the dust removal hole 434, the negative pressure hole 431 or the glue application hole 432.

[0034] The beneficial effects described above are: by adding a dust removal port 46, a dust removal hole 434 and a dust removal channel 47 to the mold sleeve 4, the cavity 8 can be connected to the dust removal channel 47 first, and the dust removal equipment can be used to remove dust from the cavity 8 before vacuuming and glue injection, thus avoiding dust from affecting the adhesion of the glue and the quality of the product.

[0035] Please refer to Figures 3 to 5 As shown, Figures 3 to 5 The diagram shows the positions of the mold sleeve 4, lower plate body 3, and upper plate body 7 for the dust removal stage, negative pressure stage, and glue injection stage, respectively. The specific working principle is as follows: After the upper plate adsorption pressing head 6 and the lower plate adsorption positioning platform 21 enclose and form a chamber 9, the chamber 9 is first connected to the dust removal hole 434. Figure 3 As shown, dust removal port 46 is connected to an external dust removal device (such as a negative pressure vacuum cleaner) to draw dust, lint, and other impurities from chamber 9 into dust removal channel 47, and discharge them from dust removal port 46; after dust removal is completed, the system switches to negative pressure port 431 to draw a vacuum, such as... Figure 4 As shown, finally switch to glue application hole 432 for glue injection, as follows. Figure 5 As shown. This solves the problem of dust contamination of products in the processing environment, improves the bonding strength between the adhesive and the board, and reduces the risk of product detachment later; the dust removal process is integrated inside the equipment, eliminating the need for additional dust removal equipment and workstations, thus simplifying the production process.

[0036] Preferably, the workbench 1 is provided with a translation frame 11 and a cleaning roller 12. The mold sleeve 4 is detachably mounted on the translation frame 11. The mold sleeve 4 is inserted into the cleaning roller 12. The surface of the cleaning roller 12 is provided with a cleaning layer. The cleaning layer is interference-fitted with the through hole 43.

[0037] The beneficial effects described above are: the translation frame 11 drives the mold sleeve 4 to move, and cooperates with the cleaning roller 12 with a cleaning layer. After the mold sleeve 4 completes one processing, it can move to the cleaning roller 12 station. Through the insertion and cooperation of the mold sleeve 4 and the cleaning roller 12, the cleaning roller 12 is inserted into the through hole 43. The cleaning layer is used to wipe the inner wall of the through hole 43 to remove residual glue or impurities.

[0038] The specific working principle is as follows: After the mold sleeve 4 completes the pressing process, it rises and moves with the translation frame 11 to the cleaning roller 12; the mold sleeve 4 descends, allowing the cleaning roller 12 to insert into the through hole 43, and the cleaning layer (such as a lint-free cloth or adhesive layer) on the surface of the cleaning roller 12 contacts the inner wall of the through hole 43; the cleaning roller 12 can also rotate actively, and the cleaning layer wipes the inner wall of the through hole 43 to remove residual adhesive or dust; after cleaning, the mold sleeve 4 rises and returns to the processing station with the translation frame 11, ready for the next processing. This achieves automatic cleaning of the through hole 43 of the mold sleeve 4, avoiding the accumulation of residual adhesive that affects the subsequent sealing effect and alignment accuracy; the insertion and cooperation between the cleaning roller 12 and the mold sleeve 4 ensures that the cleaning range covers the entire inner wall of the through hole 43, resulting in more thorough cleaning; it reduces the amount of manual cleaning work and improves the automation level of the equipment.

[0039] Preferably, the workbench 1 is provided with a first crossbeam 13 and a second crossbeam 14 placed horizontally above the conveyor belt 2. Two sets of movable frames 5 are slidably arranged on the first crossbeam 13. A material rack 15 for holding the upper plate body 7 is provided on each side of the workbench 1 located on the conveyor belt 2. Two sets of translation frames 11 are slidably arranged on the second crossbeam 14. A cleaning roller 12 is provided on each side of the workbench 1 located on the conveyor belt 2.

[0040] The beneficial effects described above are as follows: A first crossbeam 13 and a second crossbeam 14 are set on the workbench 1, which are staggered along the conveying direction of the conveyor belt 2 to avoid interference between moving parts. Two sets of moving frames 5 and two sets of translation frames 11 are arranged respectively, which, together with the material racks 15 and cleaning rollers 12 on both sides, form a double processing station and a double cleaning station, realizing parallel operation of "processing-cleaning" and "loading-standby", and improving equipment utilization.

[0041] The specific working principle is as follows: the conveyor belt 2 transports the lower plate body 3 to the processing station, the left mold sleeve 4 completes the pressing, and at the same time the right mold sleeve 4 is cleaned at the cleaning roller 12; after processing is completed, the conveyor belt 2 transports the next lower plate body 3 to the processing station, the right mold sleeve 4 has been cleaned and returned to the station to start processing; the left mold sleeve 4 moves to the left cleaning roller 12 for cleaning; the two side material racks 15 supply materials to two sets of moving frames 5 respectively, and the moving frames 5 can take the upper plate body 7 from the nearest material rack 15 to reduce the moving distance.

[0042] This structure avoids processing interruptions caused by cleaning the mold sleeve 4, improving the processing accuracy of the equipment while increasing the overall production capacity of the equipment; the material racks on both sides 15 reduce the movement path of the upper plate adsorption pressing head 6, shortening the feeding time; it adapts to the continuous conveying rhythm of the conveyor belt 2, further improving continuous production efficiency.

[0043] Preferably, valves are provided at both the negative pressure hole 431 and the glue application hole 432.

[0044] The beneficial effects described above are: valves are installed at the negative pressure hole 431 and the glue application hole 432, and the connection between the cavity 8 and the negative pressure channel 44 and the glue application channel 45 is switched by the opening and closing state of the valves, so as to realize the orderly switching between vacuuming and glue injection and avoid functional conflict.

[0045] The specific working principle is as follows: During vacuuming, the negative pressure port 431 valve is opened and the glue application port 432 valve is closed, connecting cavity 8 with the negative pressure channel 44; after vacuuming is completed, the negative pressure port 431 valve is closed; during glue application, the glue application port 432 valve is opened and the negative pressure port 431 valve is closed, connecting cavity 8 with the glue application channel 45; after glue application is completed, the glue application port 432 valve is closed. Precise control of the function switching of cavity 8 avoids equipment malfunctions or glue backflow caused by simultaneous negative pressure and glue application; the valves can adjust the channel opening, controlling the vacuuming speed and glue application flow rate, adapting to the processing needs of LCD displays of different thicknesses and sizes.

[0046] Preferably, a valve is also provided at the dust removal hole 434.

[0047] Preferably, the movable frame 5 is provided with a lifting frame 51, and the upper plate adsorption pressing head 6 is connected to the lifting frame 51 through a damping overpressure protection component.

[0048] The beneficial effects described above are: a damping overpressure protection component is set between the upper plate adsorption pressing head 6 and the lifting frame 51. Utilizing the buffering characteristics of the damping structure, when the pressing pressure exceeds the preset value, the protection component generates damping deformation to absorb the excess pressure and prevent excessive pressure from damaging the LCD display screen.

[0049] The specific working principle is as follows: During the pressing process, the lifting frame 51 drives the upper plate adsorption pressing head 6 to apply downward pressure, and the damping overpressure protection component (such as a spring damper or hydraulic damper) is in a compressed state; if the pressure exceeds the preset threshold of the protection component, the damping force of the protection component increases, limiting the descent distance of the upper plate adsorption pressing head 6, and absorbing excess pressure to stabilize the pressing pressure within a safe range. This solves the problem of LCD screen cracking and pixel damage caused by uncontrolled pressing pressure, improving the product qualification rate; it eliminates the need for additional pressure sensors and control systems, achieving overpressure protection through mechanical structure, reducing equipment costs and control complexity.

[0050] Please refer to Figures 1 to 8As shown, Embodiment 1 of the present invention comprises: an LCD display screen processing alignment and pressing device including: Workbench 1: The tabletop is made of stainless steel, and a conveyor belt 2 is installed on the tabletop. Figure 7 The conveying direction of conveyor belt 2 is perpendicular to the paper and inwards. Figure 8 The conveying direction shown is to the left. The conveyor belt 2 is a synchronous belt structure with adjustable conveying speed. A lower plate adsorption positioning table 21 is provided at preset distances along the conveying direction. The lower plate adsorption positioning table 21 adopts a vacuum suction cup structure. The adsorption area is designed according to the processed product and is used to position the lower plate body 3 (such as a polarizer). An annular groove 22 is provided around each lower plate adsorption positioning table 21 on the conveyor belt 2. The width and depth of the annular groove 22 are designed according to the size of the mold sleeve 4. Mold sleeve 4: Made of aluminum alloy, it is lifted by a linear motor. The bottom is inserted into the annular groove 22. The outer wall of mold sleeve 4 is provided with negative pressure interface 41 and glue application interface 42. The center of mold sleeve 4 is provided with through hole 43. Negative pressure hole 431 and glue application hole 432 are arranged on the upper and lower sides of the side wall of through hole 43. The inside of mold sleeve 4 is provided with negative pressure channel 44 and glue application channel 45, which are respectively connected to the corresponding interface and hole. The movable frame 5 is slidably mounted on the worktable 1 via a linear guide rail, and the movable frame 5 is equipped with a cylinder-driven lifting frame 51. Upper plate adsorption pressing head 6: adopts a vacuum suction cup structure, and the adsorption area is designed according to the processed product. It is used to position the upper plate body 7 (such as liquid crystal glass). The upper plate adsorption pressing head 6 is connected to the lifting frame 51 and can be raised and lowered with the lifting frame 51. It also fits into the through hole 43. Auxiliary equipment: negative pressure interface 41 connects to an external vacuum pump, and glue application interface 42 connects to an external pump glue tank.

[0051] Please refer to Figure 7As shown, Embodiment 2 of the present invention is as follows: Based on Embodiment 1, an additional set of mold sleeves 4, a set of translation frames 11, and a cleaning roller 12 are added; the two sets of mold sleeves 4 are slidably mounted on the crossbeam via the translation frames 11, the crossbeam spans the conveyor belt 2, and the sliding direction of the two sets of translation frames 11 is perpendicular to the conveying direction of the conveyor belt 2; a cleaning roller 12 is set on each side of the workbench 1, the surface of the cleaning roller 12 is covered with a cleaning layer (dust-free cloth material), and the cleaning roller 12 can rotate by a motor. The translation frame 11 is connected to the crossbeam via a linear guide rail, and a cylinder is provided on the translation frame 11. The mold sleeves 4 are connected to the piston rod of the cylinder to realize lifting and lowering; the cleaning roller 12 is fixed on both sides of the workbench 1 by a bracket, the axis is parallel to the conveying direction of the conveyor belt 2, and the outer diameter of the cleaning roller 12 is adapted to the diameter of the through hole 43 of the mold sleeve 4 (interference allowance 0.5mm). This solution addresses the issue of equipment downtime during the cleaning of a single mold sleeve 4, enabling parallel processing and cleaning, thus improving equipment utilization and increasing production capacity by approximately 80% compared to Example 1. Automated cleaning avoids the delays and incompleteness of manual cleaning, ensuring that there is no residual adhesive on the inner wall of the through hole 43 during each processing, thereby improving sealing stability.

[0052] Embodiment 3 of the present invention is as follows: Based on Embodiment 1, an electromagnetic valve is added to both the negative pressure hole 431 and the glue application hole 432. The electromagnetic valve is threadedly connected to the mold sleeve 4, and the control terminal of the electromagnetic valve is electrically connected to the equipment PLC. During glue application, the PLC controls the electromagnetic valve of the glue application hole 432 to open, and closes it immediately after glue application to prevent glue backflow; during vacuuming, the PLC controls the electromagnetic valve of the negative pressure hole 431 to open, and closes it after vacuuming is completed. The electromagnetic valve precisely controls the opening and closing of the channel, solving the problems of glue and air leakage caused by the delay in manual valve operation.

[0053] Embodiment 4 of the present invention is as follows: Based on Embodiment 1, the suction cup surface of the lower plate adsorption positioning stage 21 is provided with dense micro-adsorption holes, and a flow distribution chamber is provided inside. The flow distribution chamber is connected to a vacuum generator through an air pipe. The suction cup structure of the upper plate adsorption pressing head 6 is the same as that of the lower plate adsorption positioning stage 21, and a silicone sealing ring is provided on the edge of the suction cup. The flow distribution chamber of the lower plate adsorption positioning stage 21 is connected to the vacuum generator through a PU air pipe, and the vacuum generator is fixed below the conveyor belt 2. The flow distribution chamber of the upper plate adsorption pressing head 6 is connected to another vacuum generator through an air pipe, and the vacuum generator is fixed on the moving frame 5. After the lower plate body 3 is placed on the lower plate adsorption positioning stage 21, the vacuum generator is activated, and the airflow flows out from the micro-adsorption holes through the flow distribution chamber, generating negative pressure, which tightly adsorbs the lower plate body 3 onto the surface of the suction cup. The silicone sealing ring further enhances the adsorption sealing performance. The adsorption process of the upper plate body 7 is the same as that of the lower plate body 3. The micro-adsorption holes ensure that the adsorption force is evenly distributed, avoiding the upper plate body 7 (liquid crystal glass) from cracking due to excessive local stress. The micro-adsorption holes and diversion cavity design solve the problem of board warping caused by uneven adsorption force in traditional suction cups; the silicone sealing ring enhances the adsorption seal, ensuring stable adsorption even if there are minor damages on the edge of the board, thus reducing the board scrap rate.

[0054] Please refer to Figure 1 and Figure 6 As shown, Embodiment 5 of the present invention is as follows: Based on Embodiment 1, a dust removal air inlet and a dust removal air outlet are added to the outer wall of the mold sleeve 4, and a dust removal air inlet and a dust removal air outlet are added to the side wall of the through hole 43; the dust removal air inlet and the dust removal air outlet are offset by 180° in the horizontal direction and also have a certain height difference in the vertical direction; the mold sleeve 4 is provided with a dust removal air inlet channel and a dust removal air outlet channel, which are respectively connected to the corresponding interfaces and holes. A high-pressure air pump is connected to the external dust removal air inlet, and a dust collector is connected to the external dust removal air outlet; the dust removal air inlet channel and the dust removal air outlet channel are not connected to each other and are independently set inside the mold sleeve 4. After cavity 8 is formed, first close the valves of negative pressure hole 431 and glue application hole 432, and open the valves of dust removal air inlet and dust removal exhaust hole. The high-pressure air pump delivers high-pressure gas to the dust removal air inlet through the dust removal air inlet channel. The airflow flows along the inner wall of cavity 8, blowing up the dust. The dust collector draws air from the dust removal exhaust hole through the dust removal exhaust channel, sucking the blown-up dust into the dust collector. After a certain period of time, the dust removal valve is closed. The horizontal offset and height difference design allows the airflow to circulate within cavity 8, solving the problem of dust removal dead corners in a single dust removal hole 434, increasing the dust removal efficiency from 85% in Example 1 to 99%. High-pressure blowing combined with negative pressure suction can remove tiny fuzz and dust from the surface of the board, preventing dust from affecting the adhesion of the glue, and increasing the peel strength of the product by about 15%.

[0055] Embodiment 6 of the present invention is as follows: as needed, temperature regulating tubes can be added to the mold sleeve 4, the upper plate adsorption pressing head 6 and the lower plate adsorption positioning table 21. The temperature of the components can be adjusted by passing media of different temperatures into the temperature regulating tubes, adapting to different types of adhesives and board materials, improving production efficiency, reducing product damage rate and improving equipment versatility.

[0056] Embodiment 7 of the present invention is as follows: Before glue supply, the PLC controls the vibration motor to start, driving the glue bucket to vibrate, breaking up air bubbles in the glue bucket and causing them to float to the surface. Vibration removes air bubbles, solving the problem of air bubbles generated during glue storage in the glue bucket. Combined with vacuuming in cavity 8, the product's air bubble rate is further reduced. During glue injection, the gear pump starts, drawing glue from the glue bucket. After impurities are filtered out by the filter, the glue is delivered to the glue application port 42. The gear pump's speed is controlled by the PLC to precisely adjust the glue output. Gear pump glue supply replaces traditional pneumatic glue supply, solving the problem of unstable glue output caused by air pressure fluctuations, further reducing glue injection accuracy errors. The filter removes impurities from the glue, preventing impurities from clogging the glue application port 432 or affecting product quality.

[0057] Please refer to Figure 7 and Figure 8As shown, in Embodiment 8 of the present invention: the lifting drive of the mold sleeve 4 is completed by a servo electric cylinder, the translation drive of the moving frame 5 is completed by a servo motor in conjunction with a ball screw, and the lifting drive of the upper plate adsorption pressing head 6 is also completed by a servo electric cylinder. Both the servo electric cylinder and the servo motor are electrically connected to the PLC through a driver. The PLC controls the driver through pulse signals to achieve precise control of the speed and position of the driving components. The two ends of the ball screw of the moving frame 5 are fixed to the cross frame by bearings, and the servo motor is connected to one end of the screw through a coupling.

[0058] Lifting of mold sleeve 4: The PLC sends a pulse signal to the servo electric cylinder driver, which controls the extension and retraction of the electric cylinder piston rod to lift the mold sleeve 4. The descent depth of the mold sleeve 4 can be precisely controlled to ensure a stable insertion gap with the annular groove 22. The movable frame 5 moves horizontally: the servo motor drives the ball screw to rotate, and the screw nut drives the movable frame 5 to move along the guide rail, which can accurately control the horizontal position of the upper plate adsorption pressing head 6 and ensure the alignment accuracy with the through hole 43. The upper plate adsorption pressing head 6 lifts and lowers: the lifting height is controlled by a servo electric cylinder, and the pressing stroke can be adjusted according to the thickness of the plate to adapt to different specifications of LCD displays.

[0059] Embodiment 9 of the present invention is as follows: Based on Embodiment 1, the protective layer has bevels at both ends (upper and lower ends), with a bevel angle of 45° and a bevel length of 5mm; the protective layer is made of silicone material and can be disassembled and replaced individually. The inner diameter of the elastic sealing protective layer 433 is adapted to the outer diameter of the upper plate adsorption pressing head 6 and the lower plate adsorption positioning stage 21 (interference allowance 0.3mm); the bevels at the upper and lower ends of the protective layer face the opening direction of the through hole 43, facilitating the insertion of the adsorption positioning component. When the upper plate adsorption pressing head 6 and the lower plate adsorption positioning stage 21 are inserted into the through hole 43, they first contact the bevel of the elastic sealing protective layer 433 and smoothly enter the interior of the protective layer along the bevel guide, avoiding damage caused by direct collision with the edge of the protective layer; during the insertion process, the protective layer undergoes elastic deformation, tightly fitting the outer wall of the component to ensure a seal. The bevel design solves the problems of jamming and collision when the adsorption positioning component is inserted, and extends the service life of the protective layer; the protective layer can be replaced separately, avoiding the need to replace the entire mold sleeve due to damage to the protective layer, thus reducing maintenance costs; the hardness of the silicone material is selected to balance sealing performance and deformation difficulty, avoiding sealing failure due to being too soft or insertion difficulty due to being too hard.

[0060] Embodiment 10 of the present invention is as follows: the conveyor belt 2 is selected as a chain plate conveyor belt, and the lower plate adsorption positioning platform 21 is set on the chain plate.

[0061] In Embodiment Eleven of the present invention, the diameter of the glue inlet hole 4321 is designed to be larger than that of the glue outlet hole 4322, which not only improves the glue injection speed, but also helps the glue to fully fill the cavity 8 and avoids the problem of local unfilled areas.

[0062] Embodiment 12 of the present invention is as follows: an elastic sealing protective layer 433 is provided on the inner wall of the through hole 43, or an elastic sealing protective pad 61 is provided on the side wall of the upper plate adsorption pressing head 6 and the lower plate adsorption positioning stage 21. The elastic sealing protective layer 433 and the elastic sealing protective pad 61 are made of modified silicone to avoid the swelling and corrosion of silicone by the glue, extend the service life of the sealing components, maintain the interference fit after long-term use, avoid sealing failure due to deformation, and reduce the frictional resistance when the adsorption positioning components are inserted.

[0063] Embodiment thirteen of the present invention is as follows: Based on embodiment one, a scraping mechanism is provided downstream of the pressing station of the conveyor belt 2. The scraping mechanism includes a movable scraper that is movably set on the worktable 1. The movable scraper is used to scrape off excess glue around the product after pressing.

[0064] Embodiment fourteen of the present invention is: the damping overpressure protection component can be a spring.

[0065] In summary, the LCD display processing alignment and pressing equipment of the present invention ingeniously constructs a closed working cavity through the coordinated cooperation of components such as mold sleeves, integrates multiple processes, eliminates the possibility of air bubbles generated during glue injection and pressing, and improves product yield and production continuity. In addition, with the optimization design of elastic sealing, valve control, damping protection, etc., it achieves precise alignment, efficient sealing and stable processing. Further optimization in multiple dimensions such as cleaning, glue supply, material feeding, driving, materials and control solves extended problems such as cleaning delay, low glue injection accuracy and high dependence on manual labor. It significantly improves the versatility, automation and production efficiency of the equipment, adapts to the large-scale mass production needs of LCD displays of different specifications, and has high industrial application value.

[0066] The above embodiments are only used to explain the technical solutions of the present invention and not to limit it. Although the above embodiments have provided specific descriptions of the present invention, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications and equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the scope of the claims of the present invention.

Claims

1. An LCD display screen processing alignment and pressing device, characterized in that, include: The workbench (1) has a conveyor belt (2) on its surface. The conveyor belt (2) has a lower plate adsorption positioning table (21) spaced along the conveying direction. The lower plate adsorption positioning table (21) is used to position the lower plate body (3). The conveyor belt (2) has an annular groove (22) surrounding the lower plate adsorption positioning table (21). The mold sleeve (4) is raised and lowered and set on the workbench (1). The mold sleeve (4) is inserted into the annular groove (22). The outer wall of the mold sleeve (4) is provided with a negative pressure interface (41) and a glue application interface (42). The mold sleeve (4) is provided with a through hole (43) that is inserted into the lower plate adsorption positioning table (21). The side wall of the through hole (43) is provided with a negative pressure hole (431) and a glue application hole (432). The negative pressure hole (431) and the glue application hole (432) are arranged in an up-down manner. The mold sleeve (4) is provided with a negative pressure channel (44) and a glue application channel (45). The negative pressure channel (44) is connected to the negative pressure interface (41) and the negative pressure hole (431) respectively. The glue application channel (45) is connected to the glue application interface (42) and the glue application hole (432) respectively. The movable frame (5) can move horizontally on the workbench (1); The upper plate adsorption press head (6) is raised and lowered on the movable frame (5). The upper plate adsorption press head (6) is used to position the upper plate body (7). The upper plate adsorption press head (6) is inserted into the through hole (43). The cavity (8) formed by the inner wall of the through hole (43), the upper plate adsorption pressing head (6), and the lower plate adsorption positioning stage (21) is connected to the negative pressure hole (431) or the glue application hole (432).

2. The LCD display screen processing alignment and pressing equipment according to claim 1, characterized in that, The inner wall of the through hole (43) is provided with an elastic sealing protective layer (433), which is interference-fitted with the upper plate adsorption pressing head (6) and the lower plate adsorption positioning stage (21).

3. The LCD display screen processing alignment and pressing equipment according to claim 2, characterized in that, The elastic sealing protective layer (433) is press-fitted with the upper plate body (7) and the lower plate body (3). The cavity (9) formed by the inner wall of the through hole (43), the upper plate body (7) and the lower plate body (3) is connected to the negative pressure hole (431) or the glue hole (432).

4. The LCD display screen processing alignment and pressing equipment according to claim 1, characterized in that, The side walls of the upper plate adsorption pressing head (6) and the lower plate adsorption positioning table (21) are provided with elastic sealing protective pads (61), and the elastic sealing protective pads (61) are interference fit with the inner wall of the through hole (43).

5. The LCD display screen processing alignment and pressing equipment according to claim 1, characterized in that, The gluing interface (42) includes a glue inlet interface (421) and a glue outlet interface (422). The gluing hole (432) includes a glue inlet hole (4321) and a glue outlet hole (4322). The glue inlet hole (4321) and the glue outlet hole (4322) are connected to the cavity (8). The gluing channel (45) includes a glue inlet channel (451) and a glue outlet channel (452). The glue inlet channel (451) is connected to the glue inlet interface (421) and the glue inlet hole (4321) respectively. The glue outlet channel (452) is connected to the glue outlet interface (422) and the glue outlet hole (4322) respectively.

6. The LCD display screen processing alignment and pressing equipment according to claim 1, characterized in that, The outer wall of the mold sleeve (4) is provided with a dust removal port (46), the side wall of the through hole (43) is provided with a dust removal hole (434), the interior of the mold sleeve (4) is provided with a dust removal channel (47), the dust removal channel (47) is connected to the dust removal port (46) and the dust removal hole (434) respectively, and the cavity (8) is connected to the dust removal hole (434), the negative pressure hole (431) or the glue application hole (432).

7. The LCD display screen processing alignment and pressing equipment according to claim 1, characterized in that, The workbench (1) is equipped with a translation frame (11) and a cleaning roller (12). The mold sleeve (4) is raised and lowered on the translation frame (11). The mold sleeve (4) is inserted into the cleaning roller (12). The surface of the cleaning roller (12) is provided with a cleaning layer. The cleaning layer is interference-fitted with the through hole (43).

8. The LCD display screen processing alignment and pressing equipment according to claim 7, characterized in that, The workbench (1) is provided with a first crossbeam (13) and a second crossbeam (14) placed horizontally above the conveyor belt (2). Two sets of moving frames (5) are slidably arranged on the first crossbeam (13). The workbench (1) is provided with a material rack (15) for holding the upper plate body (7) on each side of the conveyor belt (2). Two sets of translation frames (11) are slidably arranged on the second crossbeam (14). A cleaning roller (12) is provided on each side of the workbench (1) on the conveyor belt (2).

9. The LCD display screen processing alignment and pressing equipment according to claim 1, characterized in that, Valves are provided at both the negative pressure hole (431) and the glue application hole (432).

10. The LCD display screen processing alignment and pressing equipment according to claim 1, characterized in that, The mobile frame (5) is equipped with a lifting frame (51), and the upper plate adsorption pressing head (6) is connected to the lifting frame (51) through a damping overpressure protection component.

Images