UV curing device and method for packaging OLED curved screen

Abstract

The invention relates to the technical field of OLED screen curing, and provides an OLED curved screen packaging UV curing device which comprises a feeding unit, a curing unit, a cooling unit and a discharging unit. The feeding unit is used for conveying OLED screens, the feeding unit comprises a conveying belt and a conveying motor, the curing unit is arranged above the conveying face of the conveying belt and located on the conveying path of the conveying belt, and the curing unit is used for conducting UV curing on the OLED screens on the conveying belt; the cooling unit is close to the curing unit and used for cooling the cured OLED screen, the cooling unit comprises an exhaust fan and an exhaust pipe, one end of the exhaust pipe is close to the curing unit, the other end of the exhaust pipe is connected with the exhaust fan, and the exhaust fan is used for exhausting hot air near the curing unit; the discharging unit is arranged at the output tail end of the conveying belt and used for temporary storage of the OLED screens. The UV curing device has the effect of conveniently performing UV curing on the OLED screen product.

Description

Technical Field

[0001] The present application relates to the technical field of OLED screen curing, and in particular to a UV curing device and method for OLED curved screen packaging. Background Art

[0002] Organic light emitting diodes or organic light emitting displays (OLED), also known as organic electroluminescent diodes, are a new type of display technology developed since the mid-20th century. Compared with liquid crystal displays, organic electroluminescent diodes have many advantages such as full solid state, active light emission, high brightness, high contrast, ultra-thin, low cost, low power consumption, fast response, wide viewing angle, wide operating temperature range, and easy flexible display.

[0003] UV glue, also known as shadowless glue, photosensitive glue, and ultraviolet light curing glue, is an indispensable adhesive in the manufacturing industry. It is widely used in the electronics and electrical manufacturing industries for the assembly of electronic devices. When encapsulating the OLED screen, it is necessary to apply UV glue around the cover plate and fit it with the substrate. Then, use 365nm ultraviolet light to cure the UV glue so that the cover plate and the substrate fit firmly.

[0004] In the prior art, most of the curing devices for UV glue of OLED screens include a UV light source and a UV glue curing machine placed in a cavity. The OLED screen is placed on the UV glue curing machine, and the UV glue is cured by irradiation of the UV light source.

[0005] Regarding the above-mentioned related technologies, the curing of UV glue is achieved by a chemical reaction triggered by ultraviolet radiation. During this process, a large amount of heat is released, causing the temperature of the OLED screen to rise accordingly. After the curing is completed, the staff needs to wait for the temperature of the OLED screen to drop slightly before unloading the material, which has low production efficiency and needs to be improved. Summary of the invention

[0006] In order to facilitate UV curing of OLED screen products and improve production efficiency, the present application provides a UV curing device for OLED curved screen packaging.

[0007] The UV curing device for OLED curved screen packaging provided in this application adopts the following technical solution: A UV curing device for OLED curved screen packaging, comprising a frame, a loading unit, a curing unit, a cooling unit and a unloading unit; The loading unit is arranged on the frame and is used to transport the OLED screen. The loading unit includes a conveyor belt and a conveyor motor. The conveyor belt is rotatably connected to the frame. The conveyor motor is arranged on the frame and connected to the conveyor belt. The conveyor motor is used to control the rotation of the conveyor belt. The curing unit is arranged above the conveying surface of the conveying belt and located on the conveying path of the conveying belt, and the curing unit is used to perform UV curing on the OLED screen on the conveying belt; The cooling unit is close to the curing unit and is used to cool the cured OLED screen. The cooling unit includes an exhaust fan and an exhaust pipe. One end of the exhaust pipe is close to the curing unit and the other end is connected to the exhaust fan. The exhaust fan is used to extract hot air near the curing unit. The unloading unit is arranged at the output end of the conveyor belt and is used for temporary storage of the OLED screen.

[0008] By adopting the above technical solution, during production, the staff first places the OLED screen on the conveyor belt, and then runs the conveyor motor to control the conveyor belt to rotate. The conveyor belt transports the OLED screen to the bottom of the curing unit. The curing unit is used to cure the fully bonded OLED screen to prevent bubbles from rebounding. During the curing process, the cooling unit is also periodically operated, and the heat near the curing unit is extracted to the external environment through the exhaust duct to achieve cooling. After the curing is completed, the conveyor belt continues to convey, and the OLED screen moves to the unloading unit due to inertia, so that the staff can unload the product. The entire production process can realize the curing of the UV glue of curved products, while accelerating the cooling rate of OLED products and improving production efficiency.

[0009] Preferably, the curing unit includes a lifting seat, a first swing seat, a second swing seat and a UV lamp, the lifting seat is lifted and lowered on the frame, the first swing seat and the second swing seat can be swingably set on the lifting seat, the swing axes of the first swing seat and the second swing seat are parallel to each other, the UV lamp is provided on the first swing seat and the second swing seat, and the UV lamp is used to cure the UV glue of the OLED screen.

[0010] By adopting the above technical solution, when the OLED screen is transported to the bottom of the curing unit, the ultraviolet rays emitted by the UV lamp can cure the UV glue of the OLED screen. During the curing process, the lifting seat can be controlled to move up and down by means of a screw motor, thereby changing the vertical distance between the UV lamp and the OLED screen, thereby changing the intensity of the UV lamp irradiating the OLED screen. In addition, during the irradiation process, the first swing seat and the second swing seat can also swing periodically to achieve uniform curing of the OLED screen.

[0011] Preferably, four curing units are arranged at intervals along the conveying direction, and are respectively a first curing unit, a second curing unit, a third curing unit and a fourth curing unit. The swing axes of the first curing unit and the second curing unit are perpendicular to each other and are in the same horizontal plane. The first curing unit and the second curing unit are used for pre-curing the OLED screen, and the third curing unit and the fourth curing unit are used for continuous curing of the OLED screen.

[0012] By adopting the above technical solution, the OLED screen is transported by the conveyor belt and sequentially passes through the first curing unit, the second curing unit, the third curing unit and the fourth curing unit. The first curing unit pre-cures both sides of the OLED screen, and the second curing unit pre-cures the other two sides of the OLED screen. Then the third curing unit and the fourth curing unit continue to cure the OLED screen. This method of pre-curing first and then continuously curing can achieve full curing of OLED products and avoid bubble rebound.

[0013] Preferably, the unloading unit includes a support frame and a stopper, the support frame is arranged at the output end of the conveyor belt, a plurality of support rollers are rotatably connected to the support frame, and the support surface formed by each of the support rollers is flush with the conveying surface of the conveyor belt; the stopper is arranged on the support frame and is used to intercept the OLED screen on the support frame.

[0014] By adopting the above technical solution, after the OLED screen is cured, the conveyor belt continues to convey the OLED screen. Under the action of inertia, the OLED screen will transition from the conveyor belt to the support frame. Since the support rollers can all rotate, the friction of the OLED screen during movement can be reduced. The block can intercept the OLED screen on the support frame to prevent the OLED screen from falling off the support frame.

[0015] Preferably, a positioning jig is further included, and a positioning groove is formed on the positioning jig, and the positioning groove is used to position the OLED screen.

[0016] By adopting the above technical solution, conventional double-curved or flat OLED screens can be directly transported by conveyor belts. For quad-curved OLED screens, if the quad-curved OLED screen is placed directly on the conveyor belt, the position will be unstable. In this case, the quad-curved OLED screen can be installed on the positioning fixture first, and then the entire positioning fixture can be placed on the conveyor belt for transportation.

[0017] Preferably, it further comprises a jig reflow unit, the jig reflow unit is used to reflow the positioning jig, and the jig reflow unit is close to the support frame; The jig reflow unit includes a reflow belt, a fixed frame, a transfer assembly and a pusher assembly. The reflow belt is arranged on the frame and located on one side of the conveyor belt. The output end of the reflow belt is flush with the input end of the conveyor belt. The fixed frame is arranged at the input end of the reflow belt and is used to place the jig; the transfer assembly is located between the fixed frame and the support frame, and is used to transfer the jig on the support frame to the fixed frame; the pusher assembly is located on one side of the fixed frame, and is used to push the jig on the fixed frame onto the reflow belt.

[0018] By adopting the above technical solution, when the four-curved OLED screen completes curing, the staff will remove the four-curved OLED screen from the positioning jig, and the empty positioning jig can be returned to the vicinity of the conveyor belt through the jig reflow unit to achieve the reuse of the positioning jig.

[0019] When reflow is required, the positioning jig on the support frame is first transferred to the fixed frame through the transfer component, and then the positioning jig is pushed onto the reflow belt using the pushing component. The reflow belt transports the positioning jig to a position close to the input end of the conveyor belt for easy access by the staff.

[0020] Preferably, the transfer assembly includes a lifting cylinder, a mounting block, a rotating seat and a suction piece, the mounting block is arranged on the piston rod of the lifting cylinder, the lifting cylinder is used to control the up and down movement of the mounting block, the rotating seat is rotatably connected to the mounting block, the rotating axis of the rotating seat is parallel to the lifting direction of the mounting block, and the suction piece is arranged on the rotating seat and is used to suck the positioning fixture.

[0021] By adopting the above technical solution, when transferring, first control the rotating seat to rotate to the top of the support frame, then the lifting cylinder controls the entire installation block to descend, so that the suction piece sucks up the positioning fixture. Then control the installation block to rise, and control the rotating seat to rotate to the top of the fixed frame at the same time, and finally put the positioning fixture on the fixed frame.

[0022] Preferably, the pushing assembly includes a linear cylinder and a pushing block, wherein the pushing block is connected to the linear cylinder and is used to control the movement of the pushing block, and the pushing block is used to push down the positioning fixture on the fixed frame.

[0023] By adopting the above technical solution, the linear cylinder can control the linear movement of the push block, and the push block can push the positioning fixture on the fixed frame onto the reflow belt.

[0024] Preferably, the reflow belt is composed of a plurality of parallel rollers, each of which is rotatably connected to the frame, and two adjacent rollers are connected in series via a belt or a chain.

[0025] By adopting the above technical solution, the rollers are connected in series through belts or chains. When one of the rollers is controlled to rotate, all the rollers can be driven to rotate in the same direction, thereby realizing the transportation of the positioning fixture.

[0026] In a second aspect, the present application further provides a UV curing method for OLED curved screen encapsulation, comprising the following steps: S1, first placing the OLED screen on the conveyor belt, operating the conveyor motor to control the conveyor belt to rotate, and the conveyor belt conveys the OLED screen to the curing unit; S2, the curing unit is used to cure the fully bonded OLED screen to prevent bubbles from rebounding; at the same time, the cooling unit is periodically operated, and the heat near the curing unit is extracted to the external environment through the exhaust pipe to achieve cooling; S3. The conveyor belt continues to convey, and the OLED screen moves to the unloading unit due to inertia, so that the staff can unload the product.

[0027] In summary, the present application includes at least one of the following beneficial technical effects: (1) By setting up a conveying unit, a curing unit, a cooling unit and a feeding unit, the OLED screen is conveyed to the bottom of the curing unit. The curing unit is used to cure the fully bonded OLED screen to prevent bubble rebound. During the curing process, the cooling unit is periodically operated at the same time, and the heat near the curing unit is extracted to the external environment through the exhaust pipe to achieve cooling. The entire production process can realize the curing of UV glue for curved products, while accelerating the cooling rate of OLED products and improving production efficiency.

[0028] (2) By setting up a positioning fixture, the positioning fixture can position the four-curved OLED product and improve the stability of the OLED screen during the transportation process.

[0029] (3) By setting up a jig return unit, the jig return unit can return the empty positioning jig to the vicinity of the conveyor belt, thereby realizing the recycling of the positioning jig. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the structure of the UV curing device in the embodiment of the present application; Figure 2 is a schematic structural diagram of a UV curing device from another perspective in an embodiment of the present application; Figure 3 yes Figure 1 An enlarged schematic diagram of the local A portion in the middle; Figure 4 It is a partial structural schematic diagram of the UV curing device in the embodiment of the present application.

[0031] Figure numerals: 1. frame; 2. loading unit; 21. conveyor belt; 22. conveying motor; 3. curing unit; 31. lifting seat; 32. first swing seat; 33. second swing seat; 34. UV lamp; 4. cooling unit; 41. exhaust fan; 42. exhaust duct; 5. unloading unit; 51. support frame; 52. block; 6. positioning fixture; 7. fixture reflux unit; 71. reflux belt; 72. fixing frame; 73. transfer assembly; 731. lifting cylinder; 732. mounting block; 733. rotating seat; 734. suction piece; 74. pushing assembly; 741. linear cylinder; 742. pushing block. DETAILED DESCRIPTION

[0032] The technical solution of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. The present application can be embodied in many different forms and is not limited to the embodiments described here.

[0033] In the description of the present application, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics represented in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the specific features, structures, materials or characteristics represented can be combined in any one or more embodiments or examples in a suitable manner.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0035] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection; it can also be a detachable connection; or integrated; it can also be a mechanical connection. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0036] Some embodiments of the present application are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, those skilled in the art may combine and combine different embodiments or examples and features of different embodiments or examples shown in the present application.

[0037] The present application embodiment discloses a UV curing device for OLED curved screen packaging. Figures 1 to 3 The UV curing device includes a frame 1, a loading unit 2, a curing unit 3, a cooling unit 4 and a unloading unit 5. The frame 1 is used as a carrier, and the loading unit 2 is installed on the frame 1 and is used to transport a flat or hyperbolic OLED screen. The loading unit 2 includes a conveyor belt 21 and a conveying motor 22. The conveyor belt 21 is rotatably connected to the frame 1, and the conveyor belt 21 conveys the OLED screen in a horizontal direction. The conveying motor 22 is fixed on the frame 1 and connected to the conveyor belt 21. The conveying motor 22 is used to control the rotation of the conveyor belt 21.

[0038] The curing unit 3 is installed above the conveying surface of the conveyor belt 21 and is located on the conveying path of the conveyor belt 21. The curing unit 3 is used to UV cure the OLED screen on the conveyor belt 21. The curing unit 3 includes a lifting seat 31, a first swing seat 32, a second swing seat 33 and a UV lamp 34. The lifting seat 31 is lifted and lowered on the frame 1. The up and down movement of the lifting seat 31 can be achieved by a cylinder drive or a screw motor. The first swing seat 32 and the second swing seat 33 can both be swingably set on the lifting seat 31. The swing axes of the first swing seat 32 and the second swing seat 33 are parallel to each other and are both in the horizontal direction. UV lamps 34 are installed on the first swing seat 32 and the second swing seat 33. The UV lamps 34 are used to cure the UV glue of the OLED screen.

[0039] When the OLED screen is transported to the bottom of the curing unit 3, the ultraviolet rays emitted by the UV lamp 34 can cure the UV glue of the OLED screen. During the curing process, the lifting seat 31 can be controlled to move up and down by means of a screw motor, thereby changing the vertical distance between the UV lamp 34 and the OLED screen, thereby changing the intensity of the UV lamp 34 irradiating the OLED screen. In addition, during the irradiation process, the first swing seat 32 and the second swing seat 33 can also swing periodically to achieve uniform curing of the OLED screen.

[0040] In this embodiment, four curing units 3 are arranged at intervals along the conveying direction, and they are the first curing unit 3, the second curing unit 3, the third curing unit 3 and the fourth curing unit 3. The swing axes of the first curing unit 3 and the second curing unit 3 are perpendicular to each other and are in the same horizontal plane. The first curing unit 3 pre-cures both sides of the OLED screen, and the second curing unit 3 pre-cures the other two sides of the OLED screen; the third curing unit 3 and the fourth curing unit 3 are used for continuous curing of the OLED screen. This method of pre-curing first and then continuously curing achieves full curing of the OLED product and avoids bubble rebound.

[0041] The cooling unit 4 is installed on the frame 1 and is close to the curing unit 3. The cooling unit 4 is used to cool the OLED screen during curing. The cooling unit 4 includes an exhaust fan 41 and an exhaust pipe 42. One end of the exhaust pipe 42 is close to the curing unit 3, and the other end is connected to the exhaust fan 41. The exhaust fan 41 is used to extract the hot air near the curing unit 3.

[0042] The unloading unit 5 is installed at the output end of the conveyor belt 21 and is used for temporary storage of the OLED screen. The unloading unit 5 includes a support frame 51 and a stopper 52. The support frame 51 is fixedly installed on the frame 1. A plurality of support rollers are rotatably connected to the support frame 51, and the rotation axis of the support rollers; each support roller is parallel to each other, and the support surface formed is flush with the conveying surface of the conveyor belt 21. The stopper 52 is fixedly connected to the side of the support frame 51 away from the conveyor belt 21, and the stopper 52 is used to intercept the OLED screen on the support frame 51. After the OLED screen is cured, the conveyor belt 21 continues to convey the OLED screen. Under the action of inertia, the OLED screen will transition from the conveyor belt 21 to the support frame 51. Since the support rollers can all rotate, the friction of the OLED screen during movement can be reduced. The stopper 52 can intercept the OLED screen on the support frame 51 to prevent the OLED screen from falling off the support frame 51.

[0043] In addition, in some embodiments, the UV curing device further includes a positioning jig 6, which is provided with a positioning groove for positioning the four-curved OLED screen. Conventional hyperbolic or flat OLED screens can be directly transported by the conveyor belt 21, but for the four-curved OLED screen, if the four-curved OLED screen is directly placed on the conveyor belt 21, the position will be unstable. In this case, the four-curved OLED screen can be first installed on the positioning jig 6, and then the entire positioning jig 6 can be placed on the conveyor belt 21 for transportation.

[0044] Among them, the frame 1 is also equipped with a jig reflow unit 7, which is close to the support frame 51 and the conveyor belt 21 and is used to reflow the positioning jig 6. After the four-curved OLED screen is cured, the staff will take the four-curved OLED screen off the positioning jig 6, and the empty positioning jig 6 can be reflowed to the vicinity of the conveyor belt 21 through the jig reflow unit 7, so that the positioning jig 6 can be reused.

[0045] Combination Figure 4The fixture reflow unit 7 includes a reflow belt 71, a fixed frame 72, a transfer assembly 73 and a push assembly 74. The reflow belt 71 is located on one side of the conveyor belt 21 and is used to transport the positioning fixture 6. The conveying direction of the reflow belt 71 is opposite to that of the conveyor belt 21. The reflow belt 71 is composed of a plurality of parallel rollers, each of which can be rotatably connected to the frame 1. Two adjacent rollers are connected in series through belts or chains to achieve linkage. When one of the rollers is controlled to rotate, all the rollers can be driven to rotate in the same direction, thereby realizing the transportation of the positioning fixture 6. The output end of the reflow belt 71 is flush with the input end of the conveyor belt 21. The fixed frame 72 is located at the input end of the reflow belt 71 and is used to place the fixture. The transfer assembly 73 is located between the fixed frame 72 and the support frame 51, and is used to transfer the fixture on the support frame 51 to the fixed frame 72. The push assembly 74 is located on one side of the fixed frame 72, and is used to push the fixture on the fixed frame 72 onto the reflow belt 71. When reflow is required, the positioning jig 6 on the support frame 51 is first transferred to the fixed frame 72 through the transfer component 73, and then the positioning jig 6 is pushed onto the reflow belt 71 using the pushing component 74. The reflow belt 71 transports the positioning jig 6 to a position close to the input end of the conveyor belt 21 for the staff to take.

[0046] The transfer assembly 73 includes a lifting cylinder 731, a mounting block 732, a rotating seat 733 and a suction piece 734. The mounting block 732 is fixed on the piston rod of the lifting cylinder 731, and the lifting cylinder 731 is used to control the up and down movement of the mounting block 732. The rotating seat 733 is rotatably connected to the mounting block 732, and the rotating shaft of the rotating seat 733 is parallel to the lifting direction of the mounting block 732. The suction piece 734 is installed on the rotating seat 733 and is used to suck the positioning fixture 6. The pushing assembly 74 includes a linear cylinder 741 and a pushing block 742. The pushing block 742 is connected to the linear cylinder 741 and is used to control the horizontal movement of the pushing block 742. The pushing block 742 is used to push down the positioning fixture 6 on the fixed frame 72.

[0047] During the transfer, the rotating seat 733 is first controlled to rotate to the top of the support frame 51, and then the lifting cylinder 731 controls the entire mounting block 732 to descend, so that the suction piece 734 sucks up the positioning fixture 6. Then the mounting block 732 is controlled to rise, and the rotating seat 733 is controlled to rotate to the top of the fixed frame 72, and finally the positioning fixture 6 is placed on the fixed frame 72. Then the linear cylinder 741 is operated to control the push block 742 to move, so that the push block 742 pushes the positioning fixture 6 on the fixed frame 72 to the return belt 71 for transportation.

[0048] The implementation principle of a UV curing device for OLED curved screen encapsulation in the embodiment of the present application is as follows: in the product production operation stage, the staff first accurately places the OLED screen on the conveyor belt 21. Then, the conveying motor 22 is started, and the conveyor belt 21 is regulated to rotate smoothly by the motor operation. Under the orderly transmission of the conveyor belt 21, the OLED screen is conveyed to the position directly below the curing unit 3. The main function of the curing unit 3 is to implement a curing treatment on the OLED screen that has completed the complete bonding process. This treatment process is intended to effectively prevent the rebound of bubbles that may be generated by bonding, and ensure the bonding quality and stability of the product. During the curing process, the cooling unit 4 starts and runs synchronously and according to a predetermined cycle. Through the exhaust pipe 42, the heat generated around the curing unit 3 is orderly extracted and discharged to the external environment, thereby achieving cooling of the curing area and providing suitable environmental conditions for the stable curing of the OLED screen. After the curing process is completed, the conveyor belt 21 continues to maintain the conveying state. At this time, based on the principle of inertia, the OLED screen moves to the position of the unloading unit 5, thereby creating convenient conditions for the staff to carry out product unloading operations. The entire production process can not only achieve effective curing of UV glue for curved products, but also significantly improve the cooling rate of OLED products, thereby improving production efficiency in all aspects.

[0049] Based on the above embodiments, the present application also provides a UV curing method for OLED curved screen encapsulation, comprising the following steps: First, the OLED screen is stably placed on a predetermined conveyor belt 21, and the conveying motor 22 is started. The rotation of the conveyor belt 21 is precisely controlled by the operation of the motor, so that the OLED screen is uniformly conveyed to the curing unit 3 along the set path.

[0050] Secondly, the curing unit 3 plays a key role in curing the fully bonded OLED screen. This process can effectively prevent bubbles from rebounding and ensure product quality. At the same time, the cooling unit 4 operates according to the set cycle rule, using the exhaust pipe 42 to timely extract the heat generated around the curing unit 3 and discharge it to the external environment, thereby achieving cooling of the working area.

[0051] Finally, the conveyor belt 21 continues to run, and the OLED screen is driven by the conveyor belt 21 and smoothly moves to the position of the unloading unit 5 by inertia. In this way, it is convenient for the staff to unload the product here, completing this important link in the entire production process.

[0052] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A UV curing device for OLED curved screen packaging, characterized in that: It comprises a frame (1), a loading unit (2), a curing unit (3), a cooling unit (4) and a unloading unit (5); The loading unit (2) is arranged on the frame (1) and is used to transport the OLED screen. The loading unit (2) comprises a conveyor belt (21) and a conveyor motor (22). The conveyor belt (21) is rotatably connected to the frame (1). The conveyor motor (22) is arranged on the frame (1) and is connected to the conveyor belt (21). The conveyor motor (22) is used to control the rotation of the conveyor belt (21). The curing unit (3) is arranged above the conveying surface of the conveying belt (21) and is located on the conveying path of the conveying belt (21), and the curing unit (3) is used to perform UV curing on the OLED screen on the conveying belt (21); The curing unit (3) comprises a lifting seat (31), a first swing seat (32), a second swing seat (33) and a UV lamp (34); the lifting seat (31) is lifted and arranged on the frame (1); the first swing seat (32) and the second swing seat (33) can both be swingably arranged on the lifting seat (31); the swing axes of the first swing seat (32) and the second swing seat (33) are parallel to each other; the UV lamp (34) is provided on the first swing seat (32) and the second swing seat (33); the UV lamp (34) is used to cure the UV glue of the OLED screen; Four curing units (3) are arranged at intervals along the conveying direction of the conveyor, and are sequentially a first curing unit (3), a second curing unit (3), a third curing unit (3) and a fourth curing unit (3); the swing axes of the first curing unit (3) and the second curing unit (3) are perpendicular to each other and are located in the same horizontal plane; the first curing unit (3) and the second curing unit (3) are used for pre-curing the OLED screen, and the third curing unit (3) and the fourth curing unit (3) are used for continuously curing the OLED screen. The cooling unit (4) is close to the curing unit (3) and is used to cool the cured OLED screen. The cooling unit (4) comprises an exhaust fan (41) and an exhaust pipe (42). One end of the exhaust pipe (42) is close to the curing unit (3), and the other end is connected to the exhaust fan (41). The exhaust fan (41) is used to extract hot air near the curing unit (3). The unloading unit (5) is arranged at the output end of the conveyor belt (21) and is used for temporarily storing the OLED screens; The unloading unit (5) comprises a support frame (51) and a stopper (52); the support frame (51) is arranged at the output end of the conveyor belt (21); a plurality of support rollers are rotatably connected to the support frame (51); a support surface formed by each of the support rollers is flush with the conveying surface of the conveyor belt (21); the stopper (52) is arranged on the support frame (51) and is used to intercept the OLED screen on the support frame (51).

2. The UV curing device for OLED curved screen encapsulation according to claim 1, characterized in that: It also comprises a positioning jig (6), wherein the positioning jig (6) is provided with a positioning groove, and the positioning groove is used to position the OLED screen.

3. The UV curing device for OLED curved screen encapsulation according to claim 2, characterized in that: It also includes a jig reflow unit (7), the jig reflow unit (7) being used to reflow the positioning jig (6), the jig reflow unit (7) being close to the support frame (51); The jig reflow unit (7) comprises a reflow belt (71), a fixed frame (72), a transfer assembly (73) and a push assembly (74); the reflow belt (71) is arranged on the frame (1) and located on one side of the conveyor belt (21); the output end of the reflow belt (71) is flush with the input end of the conveyor belt (21); the fixed frame (72) is arranged at the input end of the reflow belt (71) and is used to place the jig; the transfer assembly (73) is located between the fixed frame (72) and the support frame (51) and is used to transfer the jig on the support frame (51) to the fixed frame (72); the push assembly (74) is located on one side of the fixed frame (72) and is used to push the jig on the fixed frame (72) onto the reflow belt (71).

4. The UV curing device for OLED curved screen encapsulation according to claim 3, characterized in that: The transfer assembly (73) comprises a lifting cylinder (731), a mounting block (732), a rotating seat (733) and a suction piece (734); the mounting block (732) is arranged on the piston rod of the lifting cylinder (731); the lifting cylinder (731) is used to control the up and down movement of the mounting block (732); the rotating seat (733) is rotatably connected to the mounting block (732); the rotating shaft of the rotating seat (733) is parallel to the lifting direction of the mounting block (732); the suction piece (734) is arranged on the rotating seat (733) and is used to suck the positioning fixture (6).

5. The UV curing device for OLED curved screen encapsulation according to claim 3, characterized in that: The pusher assembly (74) comprises a linear cylinder (741) and a pusher block (742); the pusher block (742) is connected to the linear cylinder (741) and is used to control the movement of the pusher block (742); the pusher block (742) is used to push down the positioning fixture (6) on the fixed frame (72).

6. The UV curing device for OLED curved screen encapsulation according to claim 3, characterized in that: The reflow belt (71) is composed of a plurality of parallel rollers, each of which is rotatably connected to the frame (1), and two adjacent rollers are connected in series via a belt or a chain.

7. A method using the UV curing device for OLED curved screen encapsulation as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: S1, first placing the OLED screen on the conveyor belt (21), operating the conveying motor (22) to control the rotation of the conveyor belt (21), and the conveyor belt (21) conveys the OLED screen to the curing unit (3); S2, the curing unit (3) is used to cure the fully bonded OLED screen to prevent bubbles from rebounding; at the same time, the cooling unit (4) is periodically operated, and the heat near the curing unit (3) is extracted to the external environment through the exhaust pipe (42) to achieve cooling; S3. The conveyor belt (21) continues to convey, and the OLED screen moves to the unloading unit (5) due to inertia, so that the staff can unload the product.

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