OLED stripping equipment based on DPSS laser

Abstract

The invention relates to the technical field of laser stripping, in particular to OLED stripping equipment based on a DPSS laser. Comprising a console; the push plate is slidably arranged on the operation table, a suction plate is movably arranged on the push plate, the two ends of the suction plate are connected with the push plate through first elastic elements, and driving racks are arranged on the two sides of the push plate; the stripping roller comprises an outer stripping cylinder rotationally arranged on the fixed shaft and driving discs, an adsorption plate is arranged on the surface of the outer stripping cylinder in a floating mode through a second elastic element, a suction cup is arranged on the adsorption plate, the driving discs are arranged at the two ends of the outer stripping cylinder, and third elastic elements are arranged between the driving discs and the outer stripping cylinder; the driving disc drives the outer stripping cylinder to rotate through a third elastic element, and teeth meshed with the driving rack are arranged in the circumferential direction of the driving disc; and the DPSS laser is located on the front side of the stripping roller. According to the invention, the equipment applicability is improved. And the condition that the surface of the OLED flexible screen is damaged when the OLED flexible screen is forcibly stripped from a place with high viscosity is effectively avoided.

Description

Technical Field

[0001] The invention relates to the technical field of laser stripping, and in particular to an OLED stripping device based on a DPSS laser. Background Art

[0002] Compared with traditional screens, flexible screens have obvious advantages. They are not only thinner and lighter in size, but also consume less power than the original devices, which helps to improve the battery life of the device. At the same time, based on its bendability and good flexibility, its durability is much higher than that of previous screens, reducing the probability of accidental damage to the device. Therefore, flexible screens are being used more and more. However, during the production process of OLED flexible screens, the PI film needs to be separated from the glass substrate to achieve the subsequent independent bending and folding functions. The separation solution currently used in the panel industry is: using excimer lasers with beam shaping to shape the Gaussian-like beam of the excimer into a long linear beam;

[0003] For example, the application number is CN202310810053.9, which is a laser separation device for an OLED flexible screen and a glass substrate and a separation method thereof, which specifically relates to the field of flexible screen production. The laser separation device for an OLED flexible screen and a glass substrate comprises a moving seat and a laser, wherein the moving range of the laser covers the processing area on the moving seat, and the moving seat is provided with a product adsorption table for adsorbing products, and also comprises a stripping table, wherein a roller is rotatably mounted on the stripping table, and the bottom of the roller is tangent to the top plane of the product adsorbed in the product adsorption table, and the moving seat slides on the top plane of the product parallel to the laser;

[0004] The above patent document records a laser separation device for OLED flexible screen and glass substrate, and the technology in the application document can automatically and quickly separate the OLED flexible screen and glass substrate, thereby saving a lot of manpower and improving processing efficiency. However, the above patent can only separate the OLED flexible screen and glass substrate of a specific thickness, and if there is a relatively sticky area between the OLED flexible screen and the glass substrate, forcibly peeling the OLED flexible screen and the glass substrate by mechanical force will greatly increase the damage to the surface of the OLED flexible screen. Summary of the invention

[0005] In order to solve the defect that the equipment in the prior art can only separate the OLED flexible screen of a specific thickness from the glass substrate, the present invention provides an OLED stripping equipment based on a DPSS laser.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: an OLED stripping device based on a DPSS laser, comprising an operating table;

[0007] A push plate, the push plate is slidably arranged on the operating table, a suction plate is movably arranged on the push plate, two ends of the suction plate are connected to the push plate through a first elastic element, and driving racks are arranged on both sides of the push plate;

[0008] A stripping roller, the stripping roller comprising an outer stripping cylinder and a driving disk rotatably arranged on a fixed shaft, an adsorption plate being floatingly arranged on the surface of the outer stripping cylinder through a second elastic element, a suction cup being arranged on the adsorption plate, the driving disk being arranged at both ends of the outer stripping cylinder, a third elastic element being arranged between the driving disk and the outer stripping cylinder, the driving disk driving the outer stripping cylinder to rotate through the third elastic element, and the driving disk being circumferentially arranged with teeth meshing with the driving rack;

[0009] A DPSS laser is located at the front side of the peeling roller.

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

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

[0012] In some embodiments, the outer surface of the outer stripping cylinder is provided with a plurality of mounting grooves along its axial direction, the adsorption plate is floatingly provided in the mounting grooves via 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 disposed at the bottom of the mounting groove, a second vent hole connecting the suction cup and the mounting groove cavity is disposed at the bottom of the adsorption plate, and the adsorption plate and the mounting groove are sealed and connected by a rubber belt.

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

[0015] In some embodiments, a bracket rotatably connected to the fixed shaft is fixed to the side of the driving disk close to the outer stripping cylinder, a driving ring is fixed on the bracket, and the driving disk drives the outer stripping cylinder to rotate via the driving ring and a third elastic element.

[0016] In some embodiments, an active block is disposed radially on the outer circumference of the driving ring, and a driven block is disposed radially on the inner walls at both ends of the outer stripping cylinder, and the third elastic element is disposed between the active block and the driven block.

[0017] In some embodiments, the operating table is also provided with a driving mechanism for driving the DPSS laser, the driving mechanism includes a lifting mechanism and a transverse mechanism, the transverse mechanism is arranged on the lifting mechanism, and the DPSS laser is arranged on the transverse mechanism.

[0018] In some embodiments, a wind knife is further arranged at the rear side of the peeling roller, a supporting plate is arranged on the operating table, and the wind knife is arranged on the supporting plate and faces the peeling roller.

[0019] Beneficial effect: The present invention can be used for peeling OLED flexible screens of different thicknesses from glass substrates through the floating adsorption plate, thereby improving the applicability of the device.

[0020] By setting a first elastic element between the suction plate and the push plate and a third elastic element between the driving disk and the outer stripping cylinder, when encountering a place where the OLED flexible screen and the glass substrate are more sticky, the third elastic element is subject to increased resistance and is compressed. During the compression of the third elastic element, the outer stripping cylinder does not rotate, and the first elastic element causes the suction plate to be 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, and then slowly strips it off, which is beneficial to the separation of the places with high viscosity and effectively avoids the damage to the surface of the OLED flexible screen due to forced stripping of the places with high viscosity. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the peeling device of the present invention;

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

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

[0024] In the figure: 1. operating table; 2. push plate; 3. driving rack; 4. driving tooth; 5. suction plate; 6. first elastic element; 7. stabilizing plate; 8. slide groove; 9. driving mechanism; 10. DPSS laser; 11. supporting plate; 12. driving disk; 13. outer stripping cylinder; 14. supporting pallet; 15. wind knife; 16. adsorption plate; 17. suction cup; 18. air bag; 19. second elastic element; 20. first vent hole; 21. supporting cylinder; 22. negative pressure port; 23. driving 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 DESCRIPTION

[0025] The following will describe various embodiments of the present invention in detail with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

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

[0027] A push plate 2, wherein the push plate 2 is slidably disposed on the operating table 1, a suction plate 5 is movably disposed on the push plate 2, both ends of the suction plate 5 are connected to the push plate 2 through a first elastic element 6, and driving racks 3 are disposed on both sides of the push plate 2;

[0028] A peeling roller, the peeling roller comprises an outer peeling cylinder 13 and a driving disk 12 rotatably arranged on a fixed shaft 27, an adsorption plate 16 is floatingly arranged on the surface of the outer peeling cylinder 13 through a second elastic element 19, a suction cup 17 is arranged on the adsorption plate 16, the driving disk 12 is arranged at both ends of the outer peeling cylinder 13, a third elastic element 25 is arranged between the driving disk 12 and the outer peeling cylinder 13, the driving disk 12 drives the outer peeling cylinder 13 to rotate through the third elastic element 25, and the driving disk 12 is circumferentially provided with teeth meshing with the driving rack 3;

[0029] A DPSS laser 10 is located at the front side of the peeling roller.

[0030] The fixed shaft 27 is fixedly installed on the operating table 1 through the support plate 11. When working, the glass substrate with the OLED flexible screen is adsorbed on the suction plate 5 so that one side of the OLED flexible screen faces upward, and the push plate 2 is pushed toward the direction of the peeling roller manually or automatically. The automatic method can be a telescopic electric cylinder, a cylinder and other structures. First, the DPSS laser 10 located on the front side of the peeling roller processes the OLED flexible screen passing thereunder, and the push plate 2 continues to move forward until the OLED flexible screen is in contact and tangent with the adsorption plate 16 on the outer peeling cylinder 13, and the suction cup 17 sucks the OLED flexible screen. At this time, the teeth on the driving disk 12 are engaged with the driving teeth 4 of the driving rack 3 on the push plate 2. The push plate 2 continues to move forward to drive the driving disk 12 to rotate synchronously, and the driving 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 sucks the OLED flexible screen and peels it off from the glass substrate. Since the adsorption plate 16 is floatingly arranged on the surface of the outer stripping cylinder 13 through the second elastic element 19, it can be adaptively adjusted according to different glass substrate thicknesses, that is, it can be suitable for OLED flexible screens and glass substrates of different thicknesses. When encountering a place where the OLED flexible screen and the glass substrate are relatively sticky, the push plate 2 continues to move forward, the third elastic element 25 is subjected to increased resistance, and the third elastic element 25 is compressed. During the compression of the third elastic element 25, the outer stripping cylinder 13 does not rotate, and the first elastic element 6 can cause relative displacement between the suction plate 5 and the push plate 2. The suction plate 5 is also in a stationary state 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, and then slowly peels it off, which is conducive to the separation of places with high viscosity, and effectively avoids the situation where the surface of the OLED flexible screen is damaged due to forced peeling of places with high viscosity.

[0031] In some embodiments, a receiving groove is provided on the push plate 2, and a slide groove 8 is provided on both side walls of the receiving groove. Stabilizing plates 7 are fixed on both sides of the suction plate 5, and the stabilizing plates 7 are slidably provided in the slide 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 provision of the receiving groove limits the range of motion of the suction plate 5, and the cooperation of the slide groove 8 and the stabilizing plate 7 can make the push plate 2 run more stably. Specifically, the first elastic member can be a tension spring.

[0032] In some embodiments, in order to facilitate the control of the negative pressure state of the suction cup 17, the stripping roller also includes a support tube 21 fixedly connected to the fixed shaft 27, and the outer stripping tube 13 is rotatably arranged outside the support tube 21; the support tube 21 has an inner cavity and a negative pressure port 22 located at the bottom thereof, the inner cavity is connected to a vacuum source, the negative pressure port 22 is arranged along the axial direction of the support tube 21, and is used to connect the inner cavity and the suction cup 17 on the adsorption plate 16, and the outer wall of the support tube 21 is also provided with a pressure relief groove 31 arranged along the axial direction thereof, and the pressure relief groove 31 is connected to the atmosphere or a high-pressure gas 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, and 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 gas source, the vacuum state of the suction cup 17 is broken, the suction force disappears, and the OLED flexible screen after stripping is released. Since the pressure relief groove 31 is connected to the high-pressure gas source, the connection with the high-pressure gas source can prevent the OLED flexible screen from adhering to the suction cup 17 .

[0033] In some embodiments, specifically, the outer surface of the outer stripping cylinder 13 is provided with a plurality of mounting grooves 29 along its axial direction, the adsorption plate 16 is floatingly arranged in the mounting grooves 29 through the second elastic element 19, and the upper surface of the adsorption plate 16 protrudes from the mounting grooves 29. The mounting grooves 29 effectively limit the floating range of the adsorption plate 16.

[0034] In some embodiments, specifically, a first vent hole 20 is provided at the bottom of the mounting groove 29, a second vent hole communicating with the suction cup 17 and the cavity of the mounting groove 29 is provided at the bottom of the adsorption plate 16, and the adsorption plate 16 and the mounting groove 29 are sealed and connected via a rubber band 30. The rubber band 30 forms a sealed space between the mounting groove 29 and the adsorption plate 16, and the suction cup 17 is directly connected with the negative pressure port 22 or the pressure relief groove 31 of the support tube 21 through the sealed space. At the same time, the rubber band 30 is elastic and will not affect the floating of the adsorption plate 16 in the mounting cavity.

[0035] In some embodiments, the outer surface of the outer stripping cylinder 13 is further provided with an airbag 18, and the airbag 18 is provided between two adjacent adsorption plates 16. The provision of the airbag 18 effectively avoids the problem that the suction cup 17 and the OLED flexible screen are not separated 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 driving disk 12 close to the outer stripping cylinder 13, and a driving ring 23 is fixed to the bracket 28. The driving disk 12 drives the outer stripping cylinder 13 to rotate through the driving ring 23 and the third elastic element 25. Specifically, the bracket 28 is rotatably arranged on the fixed shaft 27 through the sleeve 32. Active blocks 24 are arranged on the outer peripheral surface of the driving ring 23 along its radial direction, and driven blocks 26 are arranged on the inner walls at both ends of the outer stripping cylinder 13 along its radial direction, and the third elastic element 25 is arranged between the active block 24 and the driven block 26. The driving ring 23 is located inside the outer stripping cylinder 13, and the third elastic element 25 is arranged between the active block 24 and the driven block 26 to realize the transmission between the driving disk 12 and the outer stripping cylinder 13. With this structure, when the OLED flexible screen and the glass substrate have a relatively large viscosity, the third elastic element 25 can be compressed to make the driving disk 12 and the outer stripping cylinder 13 rotate asynchronously, and the pulling force of the suction cup 17 on the OLED flexible screen gradually increases during the compression of the third elastic element 25, thereby slowly stripping it. The third elastic element 25 is a spring.

[0037] In some embodiments, the operating table 1 is also provided with a driving mechanism 9 for driving the DPSS laser 10, and the driving mechanism 9 includes a lifting mechanism and a transverse movement mechanism, the transverse movement mechanism is arranged on the lifting mechanism, and the DPSS laser 10 is arranged on the transverse movement mechanism. The lifting mechanism and the transverse movement mechanism enable the DPSS laser 10 to move in the horizontal and vertical directions, so that the DPSS laser 10 can act on the entire OLED flexible screen. Specifically, a transverse slide rail can be set on the mounting plate, the DPSS laser 10 can be slidably set in the transverse slide rail, and driven to run by a power mechanism, the mounting plate can be slidably set on the vertical slide rail, and the mounting plate can be driven to rise and fall by the power mechanism.

[0038] In some embodiments, in order to improve the stripping efficiency, a wind knife 15 is further provided at the rear side of the stripping roller, a support plate 14 is provided on the operating table 1, and the wind knife 15 is provided on the support plate 14 and faces the stripping roller. The wind knife 15 acts on the separation position of the OLED flexible screen and the glass substrate, which can effectively improve the stripping efficiency, especially when the OLED flexible screen and the glass substrate have a relatively large viscosity, while the suction cup 17 gradually increases the pulling force, the wind knife 15 continues to act on the position, which plays a good auxiliary role, improves the stripping efficiency, and further avoids damage to the OLED flexible screen.

[0039] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0040] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle 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 these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. An OLED stripping device based on DPSS laser, characterized in that: comprising an operating table (1); A push plate (2), wherein the push plate (2) is slidably arranged on the operating table (1), a suction plate (5) is movably arranged on the push plate (2), two ends of the suction plate (5) are connected to the push plate (2) via a first elastic element (6), and driving racks (3) are arranged on both sides of the push plate (2); A peeling roller, the peeling roller comprising an outer peeling cylinder (13) and a driving disk (12) rotatably arranged on a fixed shaft (27); an adsorption plate (16) is floatingly arranged on the surface of the outer peeling cylinder (13) via a second elastic element (19); a suction cup (17) is arranged on the adsorption plate (16); the driving disk (12) is arranged at both ends of the outer peeling cylinder (13); a third elastic element (25) is arranged between the driving disk (12) and the outer peeling cylinder (13); the driving disk (12) drives the outer peeling cylinder (13) to rotate via the third elastic element (25); and the driving disk (12) is circumferentially provided with teeth meshing with the driving rack (3); A DPSS laser (10) is located at the front side of the peeling roller.

2. The OLED stripping device based on DPSS laser according to claim 1, characterized in that: 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). Stabilizing plates (7) are fixed on both sides of the suction plate (5), and the stabilizing plates (7) are slidably arranged in the sliding grooves (8). The two ends of the suction plate (5) are connected to the two ends of the receiving groove through a first elastic member.

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

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

5. The DPSS laser-based OLED stripping device according to claim 4, characterized in that: A first vent hole (20) is provided at the bottom of the mounting groove (29), a second vent hole communicating with the suction cup (17) and the cavity of the mounting groove (29) is provided at the bottom of the adsorption plate (16), and the adsorption plate (16) and the mounting groove (29) are sealed and connected via a rubber belt (30).

6. The DPSS laser-based OLED stripping device according to claim 1 or 3, characterized in that: The outer surface of the outer stripping cylinder (13) is also provided with an air bag (18), and the air bag (18) is arranged between two adjacent adsorption plates (16).

7. The DPSS laser based OLED stripping device according to claim 1, characterized in that: A bracket (28) rotatably connected to the fixed shaft (27) is fixed to the side of the driving disk (12) close to the outer stripping cylinder (13), and a driving ring (23) is fixed to the bracket (28). The driving disk (12) drives the outer stripping cylinder (13) to rotate via the driving ring (23) and the third elastic element (25).

8. The DPSS laser-based OLED stripping device according to claim 7, characterized in that: An active block (24) is arranged along the radial direction on the outer peripheral surface of the driving ring (23), and a driven block (26) is arranged along the radial direction on the inner walls at both ends of the outer stripping cylinder (13), and the third elastic element (25) is arranged between the active block (24) and the driven block (26).

9. The DPSS laser based OLED stripping device 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) comprising a lifting mechanism and a transverse movement mechanism, the transverse movement mechanism being arranged on the lifting mechanism, and the DPSS laser (10) being arranged on the transverse movement mechanism.

10. The DPSS laser based OLED stripping device according to claim 1, characterized in that: A wind knife (15) is also arranged on the rear side of the peeling roller, a supporting plate (14) is arranged on the operating table (1), and the wind knife (15) is arranged on the supporting plate (14) and faces the peeling roller.

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