OLED peeling apparatus based on DPSS laser

Abstract

The present application relates to the technical field of laser stripping, in particular to a kind of OLED stripping equipment based on DPSS laser. Including operation platform;Push plate, push plate slidingly disposed on operation platform, push plate is movably provided with suction plate, suction plate both ends are connected with push plate by first elastic element, and push plate both sides are provided with driving rack;Stripping roller, stripping roller includes rotationally disposed on fixed shaft outer stripping cylinder and driving disc, outer stripping cylinder surface is floatingly provided with suction plate by second elastic element, suction plate is provided with suction cup, driving disc is arranged at the both ends of outer stripping cylinder, third elastic element is arranged between driving disc and outer stripping cylinder, driving disc rotates outer stripping cylinder by third elastic element, and driving disc is provided with the tooth that is engaged with driving rack in circumference;DPSS laser, DPSS laser is located at the front side of stripping roller.The present application improves the applicability of equipment.Effectively avoid the situation that OLED flexible screen surface is damaged in the place where strong stripping is forced to be carried out in the place where the viscosity is big.

Description

Technical Field

[0001] This invention relates to the field of laser peeling technology, and more specifically to an OLED peeling device based on a DPSS laser. Background Technology

[0002] Compared to traditional screens, flexible screens have significant advantages. They are not only thinner and lighter in size, but also consume less power than existing devices, which helps improve the battery life of devices. At the same time, due to their bendable and flexible characteristics, their durability is also much higher than that of previous screens, reducing the probability of accidental damage to devices. Therefore, flexible screens are being used more and more. However, in the production process of OLED flexible screens, the PI film needs to be separated from the glass substrate to achieve the subsequent function of bending and folding independently. The separation solution currently used in the panel industry is to use an excimer laser with beam shaping to shape the excimer's Gaussian-like beam into a long linear beam.

[0003] For example, the laser separation equipment and method for OLED flexible screen and glass substrate with application number CN202310810053.9 specifically relates to the field of flexible screen production. The laser separation equipment for OLED flexible screen and glass substrate includes a moving base and a laser. The active range of the laser covers the processing area on the moving base. The moving base is provided with a product adsorption stage for adsorbing products and also includes a peeling stage. A roller is rotatably installed on the peeling stage. The bottom of the roller is tangential to the top plane of the product adsorbed in the product adsorption stage, and the moving base slides along a plane parallel to the top plane of the product.

[0004] The aforementioned patent document describes a laser separation device for OLED flexible screens and glass substrates. The technology in the application allows for automated and rapid separation of OLED flexible screens and glass substrates, saving significant manpower and improving processing efficiency. However, this patent can only separate OLED flexible screens and glass substrates of specific thicknesses. Furthermore, if there are areas of high adhesion between the OLED flexible screen and the glass substrate, forcibly peeling them off mechanically would greatly increase the risk of damage to the OLED flexible screen surface. Summary of the Invention

[0005] To address the limitation of existing technologies that can only separate OLED flexible screens from glass substrates of a specific thickness, this invention provides an OLED peeling device based on a DPSS laser.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: an OLED peeling device based on a DPSS laser, including an operating table;

[0007] A push plate is slidably mounted on the operating table. A suction plate is movably mounted on the push plate. Both ends of the suction plate are connected to the push plate through a first elastic element. A drive rack is provided on both sides of the push plate.

[0008] A peeling roller includes an outer peeling cylinder rotatably mounted on a fixed shaft and a drive disc. An adsorption plate is floatingly mounted on the surface of the outer peeling cylinder via a second elastic element. A suction cup is mounted on the adsorption plate. The drive disc is mounted at both ends of the outer peeling cylinder. A third elastic element is mounted between the drive disc and the outer peeling cylinder. The drive disc drives the outer peeling cylinder to rotate via the third elastic element. The drive disc is circumferentially provided with teeth that mesh with the drive rack.

[0009] A DPSS laser is located on the front side of the stripping roller.

[0010] In some embodiments, the push plate is provided with a receiving groove, and the two side walls of the receiving groove are provided with sliding grooves. Stabilizing plates are fixed on both sides of the suction plate, and the stabilizing plates are slidably disposed in the sliding grooves. The two ends of the suction plate are connected to the two ends of the receiving groove through a first elastic member.

[0011] In some embodiments, the peeling roller further includes a support cylinder fixedly connected to the fixed shaft, and the outer peeling cylinder is rotatably disposed outside the support cylinder; the support cylinder has an inner cavity and a negative pressure port located at its bottom, the inner cavity is connected to a vacuum source, the negative pressure port is arranged along the axial direction of the support cylinder and is used to connect the inner cavity and the suction cup on the adsorption plate, and a pressure relief groove is also provided on the outer wall of the support cylinder along its axial direction, the pressure relief groove being connected to the atmosphere or a high-pressure air source.

[0012] In some embodiments, the outer surface of the outer peeling cylinder is provided with a plurality of mounting grooves along its axial direction, the adsorption plate is floatingly disposed in the mounting grooves by means of a second elastic element, and the upper surface of the adsorption plate protrudes from the mounting grooves.

[0013] In some embodiments, a first vent hole is provided at the bottom of the mounting groove, and a second vent hole is provided at the bottom of the adsorption plate to connect the suction cup and the mounting groove cavity. The adsorption plate and the mounting groove are sealed together by a rubber strip.

[0014] In some embodiments, an air bladder is further provided on the outer surface of the outer peeling cylinder, and the air bladder is disposed between two adjacent adsorption plates.

[0015] In some embodiments, a bracket rotatably connected to the fixed shaft is fixed to the side of the drive disk near the outer peeling cylinder, and a drive ring is fixed on the bracket. The drive disk drives the outer peeling cylinder to rotate through the drive ring and the third elastic element.

[0016] In some embodiments, an active block is provided on the outer circumferential surface of the drive ring along its radial direction, and a driven block is provided on the inner wall of both ends of the outer peeling cylinder along its radial direction, and the third elastic element is provided between the active block and the driven block.

[0017] In some embodiments, the operating table is further provided with a driving mechanism for driving the DPSS laser. The driving mechanism includes a lifting mechanism and a traversing mechanism. The traversing mechanism is disposed on the lifting mechanism, and the DPSS laser is disposed on the traversing mechanism.

[0018] In some embodiments, an air knife is further provided behind the peeling roller, and a support plate is provided on the operating table. The air knife is disposed on the support plate and faces the peeling roller.

[0019] Beneficial effects: The present invention, through the floating adsorption plate, can be used to peel OLED flexible screens and glass substrates of different thicknesses, thus improving the applicability of the equipment.

[0020] By setting a first elastic element between the suction plate and the push plate, and a third elastic element between the drive disk and the outer peeling cylinder, when encountering areas where the OLED flexible screen and the glass substrate have high adhesion, the third elastic element experiences increased resistance and is compressed. During the compression of the third elastic element, the outer peeling cylinder does not rotate, and the first elastic element keeps the suction plate stationary. At the same time, due to the compression of the third elastic element, the pulling force of the suction cup on the OLED flexible screen gradually increases, thus slowly peeling it off. This is beneficial for separating areas with high viscosity and effectively avoids damage to the surface of the OLED flexible screen caused by forcibly peeling off areas with high viscosity. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the stripping device of the present invention;

[0022] Figure 2 This is a schematic diagram of the cross-sectional structure of the stripping roller;

[0023] Figure 3 This is a cross-sectional view of the peeling roller of the present invention;

[0024] In the diagram: 1. Operating table; 2. Push plate; 3. Drive rack; 4. Drive gear; 5. Suction plate; 6. First elastic element; 7. Stabilizing plate; 8. Slide groove; 9. Drive mechanism; 10. DPSS laser; 11. Support plate; 12. Drive disk; 13. Outer peeling cylinder; 14. Support plate; 15. Air knife; 16. Adsorption plate; 17. Suction cup; 18. Airbag; 19. Second elastic element; 20. First vent; 21. Support cylinder; 22. Negative pressure port; 23. Drive ring; 24. Active block; 25. Third elastic element; 26. Driven block; 27. Fixed shaft; 28. Bracket; 29. ​​Mounting groove; 30. Rubber belt; 31. Pressure relief groove; 32. Sleeve. Detailed Implementation

[0025] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0026] like Figures 1-3 As shown, an OLED peeling device based on a DPSS laser 10 includes an operating table 1;

[0027] Push plate 2, which is slidably mounted on the operating table 1, and suction plate 5 is movably mounted on the push plate 2. The two ends of the suction plate 5 are connected to the push plate 2 through the first elastic element 6. Drive racks 3 are provided on both sides of the push plate 2.

[0028] The peeling roller includes an outer peeling cylinder 13 rotatably mounted on a fixed shaft 27 and a drive disk 12. An adsorption plate 16 is floatingly mounted on the surface of the outer peeling cylinder 13 via a second elastic element 19. A suction cup 17 is mounted on the adsorption plate 16. The drive disk 12 is mounted at both ends of the outer peeling cylinder 13. A third elastic element 25 is mounted between the drive disk 12 and the outer peeling cylinder 13. The drive disk 12 drives the outer peeling cylinder 13 to rotate via the third elastic element 25. The drive disk 12 is circumferentially provided with teeth that mesh with the drive rack 3.

[0029] DPSS laser 10, which is located in front of the stripping roller.

[0030] The fixed shaft 27 is fixedly installed on the operating table 1 by the support plate 11. During operation, the glass substrate with the OLED flexible screen is adsorbed onto the suction plate 5, with the OLED flexible screen facing upwards. The push plate 2 is pushed towards the peeling roller by manual or automatic means. The automatic means can be a telescopic electric cylinder, pneumatic cylinder or other structure. First, the DPSS laser 10 located in front of the peeling roller processes the OLED flexible screen passing below it. The push plate 2 continues to move forward until the OLED flexible screen contacts the adsorption plate 16 on the outer peeling cylinder 13 and is tangential. The suction cup 17 picks up the OLED flexible screen. At this time, the teeth on the drive disk 12 mesh with the drive teeth 4 of the drive rack 3 on the push plate 2. The push plate 2 continues to move forward and drives the drive disk 12 to rotate synchronously. The drive disk 12 drives the outer peeling cylinder 13 to rotate through the third elastic element 25. Under the rotation of the outer peeling cylinder 13, the suction cup 17 picks up the OLED flexible screen and peels it from the glass substrate. Since the adsorption plate 16 is floatingly mounted on the surface of the outer peeling cylinder 13 via the second elastic element 19, it can be adaptively adjusted according to different glass substrate thicknesses, thus accommodating OLED flexible screens and glass substrates of varying thicknesses. When encountering areas where the OLED flexible screen and glass substrate have high adhesion, the push plate 2 continues to move forward, increasing the resistance to the third elastic element 25, which is then compressed. During this compression, the outer peeling cylinder 13 does not rotate, and the first elastic element 6 allows for relative displacement between the suction plate 5 and the push plate 2. The suction plate 5 remains stationary relative to the push plate 2. Due to the compression of the third elastic element 25 and the action of the first elastic element 6, the pulling force of the suction cup 17 on the OLED flexible screen gradually increases, thus slowly peeling it off. This facilitates the separation of areas with high viscosity and effectively avoids damage to the OLED flexible screen surface caused by forcibly peeling off highly viscous areas.

[0031] In some embodiments, the push plate 2 is provided with a receiving groove, and sliding grooves 8 are provided on both side walls of the receiving groove. Stabilizing plates 7 are fixed to both sides of the suction plate 5, and the stabilizing plates 7 are slidably disposed within the sliding grooves 8. The two ends of the suction plate 5 are connected to the two ends of the receiving groove via a first elastic element. The receiving groove restricts the range of motion of the suction plate 5, and the cooperation of the sliding grooves 8 and the stabilizing plates 7 makes the push plate 2 run more stably. Specifically, the first elastic element can be a tension spring.

[0032] In some embodiments, to facilitate control of the negative pressure state of the suction cup 17, the peeling roller further includes a support cylinder 21 fixedly connected to the fixed shaft 27, and the outer peeling cylinder 13 is rotatably disposed outside the support cylinder 21. The support cylinder 21 has an inner cavity and a negative pressure port 22 located at its bottom. The inner cavity is connected to a vacuum source, and the negative pressure port 22 is arranged axially along the support cylinder 21 to connect the inner cavity and the suction cup 17 on the adsorption plate 16. A pressure relief groove 31 is also provided on the outer wall of the support cylinder 21 along its axial direction, and the pressure relief groove 31 is connected to the atmosphere or a high-pressure air source. When the negative pressure port 22 is connected to the suction cup 17, the suction cup 17 is in a vacuum adsorption state and can adsorb the OLED flexible screen located below it. When the suction cup 17 is connected to the pressure relief groove 31, the suction cup 17 is connected to the atmosphere or a high-pressure air source, the vacuum state of the suction cup 17 is broken, the suction disappears, and the peeled OLED flexible screen is released. Since the pressure relief groove 31 is connected to the high-pressure air source, the connection with the high-pressure air source can prevent the OLED flexible screen from sticking to the suction cup 17.

[0033] In some embodiments, specifically, the outer surface of the outer peeling cylinder 13 is provided with a plurality of mounting grooves 29 along its axial direction, and the adsorption plate 16 is floatingly disposed within the mounting grooves 29 by means of a second elastic element 19, with the upper surface of the adsorption plate 16 protruding from the mounting grooves 29. The mounting grooves 29 effectively limit the floating range of the adsorption plate 16.

[0034] In some embodiments, specifically, the bottom of the mounting groove 29 is provided with a first vent 20, and the bottom of the adsorption plate 16 is provided with a second vent connecting the suction cup 17 and the cavity of the mounting groove 29. The adsorption plate 16 and the mounting groove 29 are sealed together by a rubber band 30. The rubber band 30 forms a sealed space between the mounting groove 29 and the adsorption plate 16, allowing direct communication between the suction cup 17 and the negative pressure port 22 or pressure relief groove 31 of the support cylinder 21. Simultaneously, the rubber band 30 is elastic and will not affect the floating of the adsorption plate 16 within the mounting cavity.

[0035] In some embodiments, an airbag 18 is further provided on the outer surface of the outer peeling cylinder 13, and the airbag 18 is disposed between two adjacent adsorption plates 16. The airbag 18 effectively avoids the problem that the suction cup 17 and the OLED flexible screen do not separate when the vacuum state of the suction cup 17 is broken and the suction force disappears.

[0036] In some embodiments, a bracket 28, rotatably connected to the fixed shaft 27, is fixed to the side of the drive disk 12 near the outer peeling cylinder 13. A drive ring 23 is fixed on the bracket 28, and the drive disk 12 drives the outer peeling cylinder 13 to rotate via the drive ring 23 and the third elastic element 25. Specifically, the bracket 28 is rotatably mounted on the fixed shaft 27 via a sleeve 32. An active block 24 is radially arranged on the outer circumferential surface of the drive ring 23, and driven blocks 26 are radially arranged on the inner walls at both ends of the outer peeling cylinder 13. The third elastic element 25 is disposed between the active block 24 and the driven block 26. The drive ring 23 is located inside the outer peeling cylinder 13. A third elastic element 25 is positioned between the driving block 24 and the driven block 26 to achieve transmission between the drive disk 12 and the outer peeling cylinder 13. This structure allows for asynchronous rotation between the drive disk 12 and the outer peeling cylinder 13 when encountering areas with high adhesion between the OLED flexible screen and the glass substrate. The compression of the third elastic element 25 causes the suction cup 17 to gradually increase its pulling force on the OLED flexible screen, thus slowly peeling it off. The third elastic element 25 is a spring.

[0037] In some embodiments, the operating table 1 is further provided with a driving mechanism 9 for driving the DPSS laser 10. The driving mechanism 9 includes a lifting mechanism and a traversing mechanism. The traversing mechanism is disposed on the lifting mechanism, and the DPSS laser 10 is disposed on the traversing mechanism. The lifting mechanism and the traversing mechanism enable the DPSS laser 10 to move horizontally and vertically, facilitating its operation on the entire OLED flexible screen. Specifically, a horizontal slide rail can be provided on the mounting plate, the DPSS laser 10 can be slidably disposed in the horizontal slide rail, and driven to run by a power mechanism. The mounting plate can be slidably disposed on a vertical slide rail, and the mounting plate can be lifted and lowered by the power mechanism.

[0038] In some embodiments, to improve peeling efficiency, an air knife 15 is also provided on the rear side of the peeling roller, and a support plate 14 is provided on the operating table 1. The air knife 15 is disposed on the support plate 14 and faces the peeling roller. The air knife 15 acts on the separation position between the OLED flexible screen and the glass substrate, which can effectively improve the peeling efficiency. Especially when encountering areas where the adhesion between the OLED flexible screen and the glass substrate is relatively high, while the suction cup 17 gradually increases the pulling force, the air knife 15 continuously acts on this position, playing a good auxiliary role, improving the peeling efficiency, and further avoiding damage to the OLED flexible screen.

[0039] It should be noted that in the description of this invention, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0040] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0041] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. An OLED peeling device based on a DPSS laser, characterized in that, Including the control panel (1); Push plate (2), the push plate (2) is slidably disposed on the operating table (1), a suction plate (5) is movably disposed on the push plate (2), the two ends of the suction plate (5) are connected to the push plate (2) through the first elastic element (6), and a drive rack (3) is disposed on both sides of the push plate (2). The peeling roller includes an outer peeling cylinder (13) rotatably mounted on a fixed shaft (27) and a drive disk (12). An adsorption plate (16) is floatingly mounted on the surface of the outer peeling cylinder (13) via a second elastic element (19). A suction cup (17) is mounted on the adsorption plate (16). The drive disk (12) is mounted at both ends of the outer peeling cylinder (13). A third elastic element (25) is mounted between the drive disk (12) and the outer peeling cylinder (13). The drive disk (12) drives the outer peeling cylinder (13) to rotate via the third elastic element (25). The drive disk (12) is circumferentially mounted with teeth that mesh with the drive rack (3). A DPSS laser (10) is located on the front side of the stripping roller; The push plate (2) is provided with a receiving groove, and the two side walls of the receiving groove are provided with sliding grooves (8). The suction plate (5) is fixed with a stabilizing plate (7) on both sides. The stabilizing plate (7) is slidably disposed in the sliding groove (8). The two ends of the suction plate (5) are connected to the two ends of the receiving groove through a first elastic member. The drive disc (12) is also fixed with a bracket (28) that is rotatably connected to the fixed shaft (27) on the side near the outer peeling cylinder (13). A drive ring (23) is fixed on the bracket (28). The drive disc (12) drives the outer peeling cylinder (13) to rotate through the drive ring (23) and the third elastic element (25). The drive ring (23) has an active block (24) arranged radially on its outer circumferential surface, and a driven block (26) is arranged radially on the inner wall of both ends of the outer peeling cylinder (13). The third elastic element (25) is arranged between the active block (24) and the driven block (26).

2. The OLED peeling device based on a DPSS laser according to claim 1, characterized in that, The stripping roller also includes a support cylinder (21) fixedly connected to the fixed shaft (27), and the outer stripping cylinder (13) shown is rotatably disposed outside the support cylinder (21); the support cylinder (21) has an inner cavity and a negative pressure port (22) located at its bottom, the inner cavity is connected to a vacuum source, the negative pressure port (22) is arranged along the axial direction of the support cylinder (21) and is used to connect the inner cavity and the suction cup (17) on the adsorption plate (16), and a pressure relief groove (31) is also provided on the outer wall of the support cylinder (21) along its axial direction, the pressure relief groove (31) is connected to the atmosphere or a high-pressure gas source.

3. The OLED peeling device based on a DPSS laser according to claim 1 or 2, characterized in that, The outer surface of the outer peeling cylinder (13) is provided with a plurality of mounting grooves (29) along its axial direction. The adsorption plate (16) is floatingly disposed in the mounting groove (29) by means of a second elastic element (19). The upper surface of the adsorption plate (16) protrudes from the mounting groove (29).

4. The OLED peeling device based on a DPSS laser according to claim 3, characterized in that, The bottom of the mounting groove (29) is provided with a first vent hole (20), and the bottom of the adsorption plate (16) is provided with a second vent hole that connects the suction cup (17) and the cavity of the mounting groove (29). The adsorption plate (16) and the mounting groove (29) are sealed together by a rubber strip (30).

5. The OLED peeling device based on a DPSS laser according to claim 1 or 2, characterized in that, The outer surface of the outer peeling cylinder (13) is also provided with an airbag (18), which is located between two adjacent adsorption plates (16).

6. The OLED peeling device based on a DPSS laser according to claim 1, characterized in that, The operating table (1) is also provided with a driving mechanism (9) for driving the DPSS laser (10). The driving mechanism (9) includes a lifting mechanism and a transverse mechanism. The transverse mechanism is located on the lifting mechanism, and the DPSS laser (10) is located on the transverse mechanism.

7. The OLED peeling device based on a DPSS laser according to claim 1, characterized in that, An air knife (15) is also provided on the rear side of the stripping roller, and a support plate (14) is provided on the operating table (1). The air knife (15) is provided on the support plate (14) and faces the stripping roller.

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