OLED curved screen packaging UV curing device and method

Abstract

This application relates to the field of OLED screen curing technology, and provides a UV curing device for OLED curved screen encapsulation, including a feeding unit, a curing unit, a cooling unit, and an unloading unit. The feeding unit is used to transport the OLED screen and includes a conveyor belt and a conveyor motor. The curing unit is located above the conveying surface of the conveyor belt and on the conveying path of the conveyor belt, and is used to UV cure the OLED screen on the conveyor belt. The cooling unit is located near 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 remove hot air near the curing unit. The unloading unit is located at the output end of the conveyor belt and is used for temporary storage of the OLED screen. This application has the effect of facilitating the UV curing of OLED screen products.

Description

Technical Field

[0001] This application relates to the field of OLED screen curing technology, and in particular to a UV curing apparatus and method for OLED curved screen encapsulation. Background Technology

[0002] Organic light-emitting diodes (OLEDs), also known as organic electroluminescent diodes, are a new type of display technology that has been developed since the mid-20th century. Compared with liquid crystal displays (LCDs), OLEDs have many advantages, including being all-solid-state, actively emitting light, having high brightness, high contrast, being ultra-thin, having low cost, low power consumption, fast response, wide viewing angle, wide operating temperature range, and being easy to use in flexible displays.

[0003] UV adhesive, also known as shadowless adhesive, photosensitive adhesive, or ultraviolet curable adhesive, is an indispensable adhesive in the manufacturing industry. It is widely used in the electronics and electrical manufacturing sectors for the assembly of electronic components. In OLED screen encapsulation, UV adhesive is applied around the cover plate and bonded to the substrate. Then, 365nm ultraviolet light is used to cure the UV adhesive, ensuring a strong bond between the cover plate and the substrate.

[0004] In existing technologies, most UV adhesive curing devices for OLED screens include a UV light source placed inside a cavity and a UV adhesive curing machine. The OLED screen is placed on the UV adhesive curing machine, and the UV adhesive is cured by irradiation from the UV light source.

[0005] Regarding the aforementioned technologies, the curing of UV adhesive is achieved through a chemical reaction triggered by ultraviolet radiation. This process releases a significant amount of heat, causing the temperature of the OLED screen to rise accordingly. After curing, workers need to wait for the OLED screen temperature to drop slightly before unloading, resulting in low production efficiency and thus requiring improvement. Summary of the Invention

[0006] To facilitate UV curing of OLED screen products and improve production efficiency, this application provides a UV curing apparatus for OLED curved screen encapsulation.

[0007] This application provides a UV curing apparatus for OLED curved screen encapsulation, which adopts the following technical solution:

[0008] A UV curing apparatus for OLED curved screen encapsulation includes a frame, a feeding unit, a curing unit, a cooling unit, and an unloading unit;

[0009] The feeding unit is mounted on the frame and is used to transport OLED screens. The feeding unit includes a conveyor belt and a conveyor motor. The conveyor belt is rotatably connected to the frame, and the conveyor motor is mounted on the frame and connected to the conveyor belt. The conveyor motor is used to control the rotation of the conveyor belt.

[0010] The curing unit is located above the conveying surface of the conveyor belt and on the conveying path of the conveyor belt. The curing unit is used to perform UV curing on the OLED screen on the conveyor belt.

[0011] The cooling unit is located near 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 draw away the hot air near the curing unit.

[0012] The unloading unit is located at the output end of the conveyor belt and is used for temporary storage of OLED screens.

[0013] By adopting the above technical solution, during production, workers first place the OLED screen on the conveyor belt, then operate the conveyor motor to control the belt's rotation. The conveyor belt transports the OLED screen to the area below the curing unit. The curing unit is used to cure the fully bonded OLED screen, preventing air bubbles from rebounding. During the curing process, the cooling unit operates periodically, drawing heat from the vicinity of the curing unit to the external environment through exhaust ducts, achieving cooling. After curing, the conveyor belt continues transporting the OLED screen, which moves due to inertia to the unloading unit for workers to unload. The entire production process enables the curing of UV adhesive on curved products while accelerating the cooling rate of the OLED products, thus improving production efficiency.

[0014] Preferably, the curing unit includes a lifting seat, a first swing seat, a second swing seat, and a UV lamp. The lifting seat is flexibly mounted on the frame. Both the first and second swing seats can be swayed on the lifting seat. The swing axes of the first and second swing seats are parallel to each other. Both the first and second swing seats are equipped with the UV lamp, which is used to cure the UV adhesive of the OLED screen.

[0015] By adopting the above technical solution, when the OLED screen is transported to the bottom of the curing unit, the ultraviolet light emitted by the UV lamp can cure the UV adhesive on the OLED screen. During the curing process, the lifting platform can be moved up and down by a screw motor, thereby changing the vertical distance between the UV lamp and the OLED screen, and thus changing the intensity of the UV lamp's irradiation on the OLED screen. In addition, during the irradiation process, the first and second swinging platforms can also swing periodically to achieve uniform curing of the OLED screen.

[0016] Preferably, four curing units are provided at intervals along the conveying direction, and are sequentially designated as 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 located in the same horizontal plane. The first curing unit and the second curing unit are used to pre-cur the OLED screen, and the third curing unit and the fourth curing unit are used to continuously cure the OLED screen.

[0017] By adopting the above technical solution, the OLED screen is conveyed by a conveyor belt through a first curing unit, a second curing unit, a third curing unit, and a fourth curing unit in sequence. The first curing unit pre-cures both sides of the OLED screen, the second curing unit pre-cures the other two sides of the OLED screen, and then the third and fourth curing units continuously cure the OLED screen. This method of pre-curing followed by continuous curing ensures the OLED product is fully cured and avoids bubble rebound.

[0018] Preferably, the feeding unit includes a support frame and a stop block. The support frame is located at the output end of the conveyor belt, and a plurality of support rollers are rotatably connected to the support frame. The support surface formed by each support roller is flush with the conveying surface of the conveyor belt. The stop block is located on the support frame and is used to intercept the OLED screen on the support frame.

[0019] By adopting the above technical solution, after the OLED screen has been cured, the conveyor belt continues to transport 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 experienced by the OLED screen during movement can be reduced. The stops can intercept the OLED screen on the support frame, preventing it from falling off.

[0020] Preferably, it also includes a positioning fixture, which has a positioning groove for positioning the OLED screen.

[0021] By adopting the above technical solution, conventional hyperbolic or flat OLED screens can be directly transported using a conveyor belt. However, for quad-curved OLED screens, placing them directly on the conveyor belt could result in unstable positioning. In this case, the quad-curved OLED screen can be first mounted on a positioning fixture, and then the entire positioning fixture can be placed on the conveyor belt for transport.

[0022] Preferably, it further includes a fixture return unit, which is used to return the positioning fixture, and the fixture return unit is located near the support frame;

[0023] The fixture return unit includes a return belt, a fixed frame, a transfer assembly, and a pushing assembly. The return belt is mounted on the frame and located on one side of the conveyor belt. The output end of the return belt is flush with the input end of the conveyor belt. The fixed frame is located at the input end of the return belt and is used to place the fixture. The transfer assembly is located between the fixed frame and the support frame and is used to transfer the fixture on the support frame to the fixed frame. The pushing assembly is located on one side of the fixed frame and is used to push the fixture on the fixed frame onto the return belt.

[0024] By adopting the above technical solution, after the quad-curved OLED screen is cured, the staff will remove the quad-curved OLED screen from the positioning fixture. The empty positioning fixture can be returned to the vicinity of the conveyor belt through the fixture return unit, so as to realize the reuse of the positioning fixture.

[0025] When reflow is required, the positioning fixture on the support frame is first transferred to the fixed frame by the transfer component, and then the positioning fixture is pushed onto the reflow belt by the pusher component. The reflow belt transports the positioning fixture to a position close to the input end of the conveyor belt so that the staff can pick it up.

[0026] Preferably, the transfer assembly includes a lifting cylinder, a mounting block, a rotating seat, and a suction component. The mounting block is disposed on the piston rod of the lifting cylinder, and 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, and the rotation axis of the rotating seat is parallel to the lifting direction of the mounting block. The suction component is disposed on the rotating seat and is used to suction the positioning fixture.

[0027] By adopting the above technical solution, during the transfer, first, the rotating seat is controlled to rotate above the support frame. Then, the lifting cylinder controls the entire mounting block to descend, causing the suction component to pick up the positioning fixture. Subsequently, the mounting block is controlled to rise, while the rotating seat is controlled to rotate above the fixed frame. Finally, the positioning fixture is placed on the fixed frame.

[0028] Preferably, the pushing assembly includes a linear cylinder and a pushing block, the pushing block being connected to the linear cylinder and used to control the movement of the pushing block, the pushing block being used to push down the positioning fixture on the fixed frame.

[0029] By adopting the above technical solution, the linear cylinder can control the pusher block to move linearly, and the pusher block can push the positioning fixture on the fixed frame onto the return belt.

[0030] Preferably, the return belt is composed of several parallel rollers, each of which is rotatably connected to the frame, and adjacent rollers are connected in series by a belt or chain.

[0031] By adopting the above technical solution, the rollers are connected in series by belts or chains. When one roller is controlled to rotate, all rollers can be driven to rotate in the same direction, thereby realizing the conveying of the positioning fixture.

[0032] Secondly, this application also provides a UV curing method for OLED curved screen encapsulation, including the following steps: S1, first place the OLED screen on the conveyor belt, run the conveyor motor to control the rotation of the conveyor belt, and the conveyor belt transports the OLED screen to the curing unit;

[0033] S2. The curing unit is used to cure the fully bonded OLED screen to prevent air bubbles from rebounding; at the same time, the cooling unit is operated periodically, and the heat near the curing unit is drawn away to the external environment through the exhaust pipe to achieve cooling.

[0034] S3. The conveyor belt continues to transport the OLED screen, which moves to the unloading unit due to inertia, so that the staff can unload the product.

[0035] In summary, this application includes at least one of the following beneficial technical effects:

[0036] (1) By setting up a conveying unit, a curing unit, a cooling unit, and a feeding unit, the OLED screen is conveyed to the area below the curing unit. The curing unit is used to cure the fully bonded OLED screen and prevent air bubbles from rebounding. During the curing process, the cooling unit operates periodically, and the heat near the curing unit is drawn away to the external environment through the exhaust pipe to achieve cooling. The entire production process can achieve the curing of UV adhesive for curved products, while accelerating the cooling rate of OLED products and improving production efficiency.

[0037] (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.

[0038] (3) By setting up a fixture return unit, the fixture return unit can return empty positioning fixtures to the vicinity of the conveyor belt, thereby realizing the cyclic use of positioning fixtures. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the UV curing device in the embodiments of this application;

[0040] Figure 2 This is a schematic diagram of the UV curing apparatus from another perspective in the embodiments of this application;

[0041] Figure 3 yes Figure 1 An enlarged schematic diagram of part A in the middle section;

[0042] Figure 4 This is a partial structural schematic diagram of the UV curing device in the embodiments of this application.

[0043] Reference numerals: 1. Frame; 2. Feeding unit; 21. Conveyor belt; 22. Conveyor 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 pipe; 5. Unloading unit; 51. Support frame; 52. Stop block; 6. Positioning fixture; 7. Fixture return unit; 71. Return belt; 72. Fixture; 73. Transfer assembly; 731. Lifting cylinder; 732. Mounting block; 733. Rotating seat; 734. Suction component; 74. Pushing assembly; 741. Linear cylinder; 742. Push block. Detailed Implementation

[0044] The technical solutions of this application will now be described with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. This application can be embodied in many different forms and is not limited to the embodiments described herein.

[0045] In the representation of this application, the reference to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., means that a specific feature, structure, material, or characteristic represented in connection with that embodiment or example is included in at least one embodiment or example of this application. Moreover, the specific features, structures, materials, or characteristics represented may be combined in any suitable manner in one or more embodiments or examples.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0047] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection; a detachable connection; an integral part; or a mechanical connection. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0048] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Without conflict, those skilled in the art can combine and integrate the different embodiments or examples shown in this application, as well as the features of those embodiments or examples.

[0049] This application discloses a UV curing apparatus for encapsulating OLED curved screens. (Refer to...) Figures 1 to 3 The UV curing device includes a frame 1, a feeding unit 2, a curing unit 3, a cooling unit 4, and a discharging unit 5. The frame 1 serves as a carrier, and the feeding unit 2 is mounted on the frame 1 and used to transport flat or hyperbolic OLED screens. The feeding unit 2 includes a conveyor belt 21 and a conveyor motor 22. The conveyor belt 21 is rotatably connected to the frame 1 and transports the OLED screens horizontally. The conveyor motor 22 is fixed to the frame 1 and connected to the conveyor belt 21, and is used to control the rotation of the conveyor belt 21.

[0050] The curing unit 3 is installed above the conveyor surface of the conveyor belt 21 and along the conveyor 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 swung 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 horizontal. A UV lamp 34 is installed on both the first swing seat 32 and the second swing seat 33. The UV lamp 34 is used to cure the UV adhesive on the OLED screen.

[0051] When the OLED screen is transported to the bottom of the curing unit 3, the ultraviolet light emitted by the UV lamp 34 can cure the UV adhesive on the OLED screen. During the curing process, the lifting seat 31 can be moved up and down by a screw motor, thereby changing the vertical distance between the UV lamp 34 and the OLED screen, and thus changing the intensity of the UV lamp irradiation on 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.

[0052] In this embodiment, four curing units 3 are spaced apart along the conveying direction, and are sequentially designated as 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 lie 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 followed by continuous curing ensures thorough curing of the OLED product and avoids bubble rebound.

[0053] Cooling unit 4 is mounted on frame 1 and close to curing unit 3. Cooling unit 4 is used to cool the OLED screen during curing. Cooling unit 4 includes exhaust fan 41 and exhaust pipe 42. One end of exhaust pipe 42 is close to curing unit 3 and the other end is connected to exhaust fan 41. Exhaust fan 41 is used to draw away hot air near curing unit 3.

[0054] The unloading unit 5 is installed at the output end of the conveyor belt 21 and is used for temporary storage of OLED screens. The unloading unit 5 includes a support frame 51 and a stop block 52. The support frame 51 is fixedly installed on the frame 1, and several support rollers are rotatably connected to the support frame 51. The rotation axes of the support rollers are parallel to each other, and the supporting surface they form is flush with the conveying surface of the conveyor belt 21. The stop block 52 is fixedly connected to the side of the support frame 51 away from the conveyor belt 21, and is used to intercept the OLED screens on the support frame 51. After the OLED screen has cured, the conveyor belt 21 continues to transport the OLED screen. Under inertia, the OLED screen will transition from the conveyor belt 21 to the support frame 51. Since the support rollers can rotate, the friction experienced by the OLED screen during movement can be reduced. The stop block 52 can intercept the OLED screens on the support frame 51, preventing them from falling off.

[0055] Furthermore, in some embodiments, the UV curing apparatus also includes a positioning fixture 6, which has a positioning groove for positioning the quad-curved OLED screen. While conventional hyperbolic or flat OLED screens can be directly transported using the conveyor belt 21, placing a quad-curved OLED screen directly on the conveyor belt 21 could result in unstable positioning. In this case, the quad-curved OLED screen can be first mounted on the positioning fixture 6, and then the entire positioning fixture 6 can be placed on the conveyor belt 21 for transport.

[0056] The frame 1 is also equipped with a fixture return unit 7, which is located near the support frame 51 and the conveyor belt 21. This unit is used to return the positioning fixture 6. After the quad-curved OLED screen has been cured, the operator removes the screen from the positioning fixture 6. The empty fixture 6 can then be returned to the vicinity of the conveyor belt 21 via the fixture return unit 7, enabling its reuse.

[0057] Combination Figure 4 The fixture return unit 7 includes a return belt 71, a fixed frame 72, a transfer assembly 73, and a pusher assembly 74. The return belt 71 is located on one side of the conveyor belt 21 and is used to transport the positioning fixture 6. The transport direction of the return belt 71 is opposite to that of the conveyor belt 21. The return belt 71 consists of several parallel rollers, each of which is rotatably connected to the frame 1. Adjacent rollers are connected in series by a belt or chain to achieve linkage. When one roller is controlled to rotate, all rollers can be driven to rotate in the same direction, thereby realizing the transport of the positioning fixture 6. The output end of the return 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 return 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 pusher 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 return belt 71. When reflow is required, the positioning fixture 6 on the support frame 51 is first transferred to the fixed frame 72 by the transfer component 73, and then the positioning fixture 6 is pushed onto the return belt 71 by the pusher component 74. The return belt 71 transports the positioning fixture 6 to a position close to the input end of the conveyor belt 21 so that the staff can pick it up.

[0058] The transfer assembly 73 includes a lifting cylinder 731, a mounting block 732, a rotating seat 733, and a suction member 734. The mounting block 732 is fixed to the piston rod of the lifting cylinder 731, which controls the vertical movement of the mounting block 732. The rotating seat 733 is rotatably connected to the mounting block 732, and its axis of rotation is parallel to the lifting direction of the mounting block 732. The suction member 734 is mounted on the rotating seat 733 and is used to hold the positioning fixture 6. The pushing assembly 74 includes a linear cylinder 741 and a pusher block 742. The pusher block 742 is connected to the linear cylinder 741 and controls its horizontal movement. The pusher block 742 is used to push down the positioning fixture 6 on the fixing frame 72.

[0059] During the transfer, first, the rotating seat 733 is controlled to rotate above the support frame 51. Then, the lifting cylinder 731 controls the entire mounting block 732 to descend, causing the suction member 734 to pick up the positioning fixture 6. Subsequently, the mounting block 732 is controlled to rise, while the rotating seat 733 is controlled to rotate above the fixed frame 72. Finally, the positioning fixture 6 is placed on the fixed frame 72. Afterward, the linear cylinder 741 controls the pusher block 742 to move, causing the pusher block 742 to push the positioning fixture 6 on the fixed frame 72 onto the return conveyor belt 71 for conveying.

[0060] The implementation principle of the UV curing device for OLED curved screen encapsulation in this embodiment is as follows: During the product manufacturing stage, the operator first precisely places the OLED screen onto the conveyor belt 21. Then, the conveyor motor 22 is started, and the motor's operation controls the smooth rotation of the conveyor belt 21. Under the orderly transmission of the conveyor belt 21, the OLED screen is transported to a position directly below the curing unit 3. The main function of the curing unit 3 is to cure the OLED screen that has completed the full bonding process. This process aims to effectively prevent the rebound phenomenon caused by air bubbles that may be generated during bonding, ensuring the bonding quality and stability of the product. During the curing process, the cooling unit 4 starts operating 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 transport the OLED screen. At this time, based on the principle of inertia, the OLED screen moves to the position of the unloading unit 5, thus creating convenient conditions for the operator to carry out product unloading operations. The entire production process not only enables the effective curing of UV adhesives for curved products, but also significantly improves the cooling rate of OLED products, thereby enhancing production efficiency in all aspects.

[0061] Based on the above embodiments, this application also provides a UV curing method for OLED curved screen encapsulation, comprising the following steps:

[0062] First, the OLED screen is placed stably on the predetermined conveyor belt 21, and the conveyor 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 transported at a constant speed to the curing unit 3 along the set path.

[0063] Secondly, the curing unit 3 plays a crucial role in curing the fully bonded OLED screen. This process effectively prevents air bubble rebound and ensures product quality. At the same time, the cooling unit 4 operates according to a set cycle, using the exhaust pipe 42 to promptly remove the heat generated around the curing unit 3 and discharge it into the external environment, thereby cooling the working area.

[0064] Finally, the conveyor belt 21 continues to operate, and the OLED screen, driven by the conveyor belt 21, moves smoothly to the location of the unloading unit 5 by inertia. This allows the staff to unload the product at this location, completing this important step in the entire production process.

[0065] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A UV curing apparatus for encapsulating OLED curved screens, characterized in that, The system includes 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 located on the frame (1) and is used to transport OLED screens. The loading unit (2) includes 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 located on the frame (1) and 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 located above the conveying surface of the conveyor belt (21) and on the conveying path of the conveyor belt (21). The curing unit (3) is used to UV cure the OLED screens 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 mounted on the frame (1). The first swing seat (32) and the second swing seat (33) can both swing 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 both the first swing seat (32) and the second swing seat (33). The UV lamp (34) is used to cure the UV adhesive of the OLED screen. The curing unit (3) is provided with four units at intervals along the conveying direction, namely 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) and the second curing unit (3) are used to pre-cur the OLED screen. The third curing unit (3) and the fourth curing unit (3) are used to continuously cure 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) includes a fan (41) and a duct (42). One end of the duct (42) is close to the curing unit (3), and the other end is connected to the fan (41). The fan (41) is used to remove the hot air near the curing unit (3). The unloading unit (5) is located at the output end of the conveyor belt (21) and is used for temporary storage of the OLED screen. The feeding unit (5) includes a support frame (51) and a stop block (52). The support frame (51) is located at the output end of the conveyor belt (21). Several support rollers are rotatably connected to the support frame (51), and the support surface formed by each support roller is flush with the conveying surface of the conveyor belt (21). The stop block (52) is located on the support frame (51) and is used to intercept the OLED screen on the support frame (51).

2. The UV curing apparatus for OLED curved screen encapsulation according to claim 1, characterized in that, It also includes a positioning fixture (6), which has a positioning groove for positioning the OLED screen.

3. The UV curing apparatus for OLED curved screen encapsulation according to claim 2, characterized in that, It also includes a fixture return unit (7), which is used to return the positioning fixture (6) and is located near the support frame (51). The fixture return unit (7) includes a return belt (71), a fixed frame (72), a transfer component (73), and a pusher component (74). The return belt (71) is located on the frame (1) and on one side of the conveyor belt (21). The output end of the return 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 return belt (71) and is used to place the fixture. The transfer component (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 pusher component (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 return belt (71).

4. The UV curing apparatus for OLED curved screen encapsulation according to claim 3, characterized in that, The transfer assembly (73) includes a lifting cylinder (731), a mounting block (732), a rotating seat (733), and a suction component (734). The mounting block (732) is mounted 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 rotation axis of the rotating seat (733) is parallel to the lifting direction of the mounting block (732). The suction component (734) is mounted on the rotating seat (733) and is used to suction the positioning fixture (6).

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

6. The UV curing apparatus for OLED curved screen encapsulation according to claim 3, characterized in that, The return belt (71) is composed of several parallel rollers, each of which is rotatably connected to the frame (1), and adjacent rollers are connected in series by belts or chains.

7. A method using the UV curing apparatus for OLED curved screen encapsulation as described in any one of claims 1-6, characterized in that, Includes the following steps: S1. First, place the OLED screen on the conveyor belt (21), and run the conveyor motor (22) to control the rotation of the conveyor belt (21). The conveyor belt (21) transports the OLED screen to the curing unit (3). S2. The curing unit (3) is used to cure the fully bonded OLED screen to prevent air bubbles from rebounding. At the same time, the cooling unit (4) is run periodically. The heat near the curing unit (3) is drawn away to the external environment through the exhaust pipe (42) to achieve cooling. S3. The conveyor belt (21) continues to transport the OLED screen. The OLED screen moves to the unloading unit (5) due to inertia so that the staff can unload the product.

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