Defoaming device for OCA (Optical Clear Adhesive)

Abstract

The invention discloses a defoaming device for OCA optical cement, and belongs to the technical field of optical equipment.The defoaming device comprises a rack, a rotating disc, a first driving module and a rotating axis around the rotating disc are rotationally arranged on the rack, the first driving module is used for driving the rotating disc, a plurality of lower box bodies are arranged on the rotating disc, and trays used for containing the OCA optical cement to be processed are arranged in the lower box bodies; a first lifting module and a second lifting module are sequentially arranged on the rack in the rotating direction of the rotating disc, and an upper box body is arranged on the first lifting module; the rack is further provided with a vacuum module connected with the upper box body, and a hot-pressing module used for hot-pressing hole eliminating operation is arranged in the upper box body; a release film paving module is arranged on the second lifting module; a controller is further arranged on the rack; compared with the prior art, the method has the advantages that large pressure difference is generated between the bubbles and the external environment, natural blasting of the bubbles is achieved through the pressure difference, meanwhile, secondary hot-pressing molding is conducted on the OCA optical cement in the vacuum environment, and the bubble removing efficiency is effectively improved.

Description

Technical Field

[0001] The present application relates to the technical field of optical equipment, and in particular to a degassing device for OCA optical adhesive. Background Art

[0002] OCA optical adhesive is a specialty adhesive designed for transparent optical components. It utilizes a substrate-free, double-sided tape structure consisting of optical acrylic adhesive and upper and lower release films. Its core properties include high transmittance (>99%), low haze, high-temperature resistance, UV resistance, and excellent bonding strength, effectively reducing glare, improving display contrast, and preventing Newton rings. It is primarily used in touchscreen lamination processes, connecting cover glass, touch layers, and displays. It is also widely used in electronic paper, automotive displays, aerospace optical components, and other fields. In the prior art, bubbles often appear inside OCA optical adhesive due to the influence of various factors such as the process and the production environment. Such bubbles will seriously affect the performance of the OCA optical adhesive. In the prior art, bubbles are generally removed by extrusion or other methods. However, the above method not only has limited debubbling effect, but also has low debubbling efficiency. Summary of the Invention

[0003] The main purpose of this application is to provide a degassing device for OCA optical adhesive, aiming to solve the defect of low degassing efficiency in the prior art.

[0004] This application achieves the above objectives through the following technical solutions: A debubbling device for OCA optical adhesive, comprising a frame; A turntable is rotatably mounted on the frame, and a first drive module is also mounted on the frame and is connected to the turntable. A plurality of lower boxes are evenly arranged on the turntable around the rotation axis of the turntable, and each lower box contains a tray for placing the OCA optical adhesive to be processed. a first lifting module, the first lifting module being arranged on the frame, the first lifting module being provided with an upper box body hermetically connected to the lower box body; the frame being further provided with a vacuum module connected to the upper box body; A hot pressing module, which is arranged in the upper box and is used for hot pressing and eliminating holes in the gaps of the OCA optical adhesive; A second lifting module is provided on the frame and is arranged at the front end of the first lifting module along the rotation direction of the turntable. A release film laying module is provided on the second lifting module; A controller is arranged on the rack.

[0005] Optionally, the structures of the first lifting module and the second lifting module are exactly the same, and they both include columns and lifting plates, each of the columns is arranged on the frame, and each of the lifting plates is slidingly connected to each of the columns through a linear motion bearing; each of the columns is provided with a first electric push rod, and each of the first electric push rods is connected to each of the lifting plates.

[0006] Optionally, each lower box body is provided with an adjustment baffle, and each column is provided with a slot-type photoelectric sensor adapted to the adjustment baffle.

[0007] Optionally, an annular slide rail is provided on the frame, and a plurality of sliders respectively connected to the turntable are provided on the annular slide rail; the first driving module includes a driving motor, and a driving shaft is provided on the turntable, and the driving shaft is connected to the driving motor through a bevel gear.

[0008] Optionally, a plug-in ring is provided on a side of the upper box body facing the lower box body, the plug-in ring is provided with a plug-in groove adapted to the lower box body, and a sealing strip with a U-shaped cross section is provided in the plug-in groove.

[0009] Optionally, the vacuum module includes a vacuum pump and a vacuum tube, the inlet end of the vacuum tube is connected to the upper box body, and the outlet end thereof is connected to the vacuum pump; a vacuum gauge and an electromagnetic air breaking valve are also provided on the upper box body, and the vacuum gauge and the electromagnetic air breaking valve are electrically connected to the controller respectively.

[0010] Optionally, the hot pressing module includes a hot pressing mold and a second electric push rod, and the second electric push rod is connected to the hot pressing mold through a pressure sensor; the pressure sensor is electrically connected to the controller.

[0011] Optionally, the hot pressing module also includes a first electric heating plate and a temperature sensor. The hot pressing mold is provided with a heating cavity and a detection hole. The first electric heating plate is arranged in the heating cavity, and the temperature sensor is plugged into the detection hole. The first electric heating plate and the temperature sensor are electrically connected to the controller respectively.

[0012] Optionally, the hot pressing module further includes a second electric heating plate, which is arranged on the side wall of the upper box body and is electrically connected to the controller.

[0013] Optionally, the release film laying module includes a rotating arm, which is rotatably connected to the lifting plate via a rotating shaft. The lifting plate is also provided with a rotating motor that is power-connected to the rotating shaft. Suction cups are provided at both ends of the rotating arm along the length direction of the rotating arm.

[0014] Compared with the prior art, this application has the following beneficial effects: The present application includes a frame, a turntable is rotatably provided on the frame, and a first driving module for driving the turntable is also provided. Around the rotation axis of the turntable, a plurality of lower boxes are evenly provided on the turntable, and a tray for placing the OCA optical glue to be processed is provided in the lower box; around the rotation direction of the turntable, a first lifting module and a second lifting module are sequentially provided on the frame, and an upper box tightly connected to the lower box is provided on the first lifting module; a vacuum module connected to the upper box is also provided on the frame, and a hot pressing module for hot pressing and hole elimination operation is provided in the upper box; a release film paving module is provided on the second lifting module; and a controller is also provided on the frame; During use, only the OCA optical adhesive die with the release film attached to the bottom is placed on the tray, and then the turntable rotates to the position of the first lifting module. At the same time, the lower box is located directly below the upper box. Then, under the control of the first lifting module, the upper box moves downward and is closed and connected with the lower box to form a closed box. A vacuum environment is formed in the box through the vacuum module. There is a large pressure difference between the vacuum environment and the bubbles in the OCA optical adhesive. At this time, the bubbles will burst by themselves to expel the air inside. The OCA optical adhesive after the bubbles burst is then hot-pressed by the hot-pressing module, thereby pressing the semi-melted OCA optical adhesive for a second time to eliminate the gaps caused by the bubble bursts. Finally, the vacuum degree of the box is gradually restored, and the surface release film is covered in the next station. Compared with the prior art, the present invention creates a larger pressure difference between the bubble and the external environment, thereby achieving the natural bursting of the bubble through the pressure difference; At the same time, under the vacuum environment, there is no gas in the bubbles after the explosion. At this time, hot pressing can not only perform secondary plasticization on the OCA optical adhesive, but also fill the gaps through the reflow of the colloid without reintroducing bubbles, thereby achieving the bubble elimination operation. The two work together to achieve defoaming. Compared with the traditional extrusion defoaming method, this application not only does not affect the surface quality of the OCA optical adhesive, but also can achieve secondary plasticity and improve the flatness of the OCA optical adhesive; Secondly, under the action of pressure difference, bubbles will rupture and disintegrate on their own, and by increasing the pressure difference, various small bubbles can be further eliminated. Therefore, this application can remove bubbles of various sizes indiscriminately to the greatest extent possible, thereby increasing the defoaming rate as much as possible, avoiding bubble residue, and effectively improving the quality of OCA optical adhesive; Finally, this application only requires the OCA optical glue to be placed in a vacuum box to wait for the bubbles to naturally collapse and rupture, and the above waiting time can also be controlled by adjusting the pressure difference, thereby effectively improving the efficiency of the defoaming operation, and no additional extrusion equipment is required, simplifying the entire defoaming operation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic structural diagram of a degassing device for OCA optical adhesive provided in an embodiment of the present application; Figure 2 An exploded view of a degassing device for OCA optical adhesive provided in an embodiment of the present application; Figure 3 It is a schematic diagram of the assembly of the upper box and the lower box; Figure 4 This is the exploded view of the upper box; Figure 5 This is a structural diagram of the release film paving module; Figure markings: 1-frame, 2-turntable, 3-lower box, 4-tray, 5-upper box, 6-controller, 7-column, 8-lifting plate, 9-linear motion bearing, 10-first electric push rod, 11-adjusting baffle, 12-groove photoelectric sensor, 13-annular slide rail, 14-slider, 15-drive motor, 16-drive shaft, 17-plug-in ring, 18-plug-in slot, 19-sealing strip, 20-vacuum pump, 21-vacuum tube, 22-vacuum gauge, 23-electromagnetic air breaking valve, 24-hot pressing mold, 25-second electric push rod, 26-pressure sensor, 27-first electric heating plate, 28-temperature sensor, 29-heating chamber, 30-detection hole, 31-second electric heating plate, 32-rotating arm, 33-rotating motor, 34-suction cup.

[0016] The purpose, features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0018] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0019] In the present invention, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0020] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "robot coordinate system and / or m" as an example, it includes the robot coordinate system scheme, or the m scheme, or the scheme in which the robot coordinate system and m are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that ordinary technicians in this field can implement it. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0021] Implementation Method 1 Reference Figure 1 This embodiment, as an optional embodiment of the present application, discloses a debubbling device for OCA optical adhesive, comprising a frame 1 and a turntable 2. The frame 1 is further provided with a controller 6. A circular annular slide rail 13 is provided on the frame 1, and a plurality of sliders 14 are slidably provided on the annular slide rail 13. The turntable 2 is a circular disk, and each of the sliders 14 is respectively connected to the bottom surface of the turntable 2, thereby rotatably connecting the frame 1 and the turntable 2. A drive shaft 16 is provided on the bottom surface of the turntable 2, and a first drive module is also provided on the frame 1; the first drive module includes a drive motor 15, and a drive shaft 16 is provided on the turntable 2, and the drive shaft 16 is connected to the drive motor 15 through a bevel gear.

[0022] Preferably, the driving motor 15 is a stepping motor; Furthermore, a first lifting module and a second lifting module are further provided on the frame 1. Along the rotation direction of the turntable 2, the first lifting module and the second lifting module are sequentially provided. The structures of the first lifting module and the second lifting module are exactly the same, and both include a column 7 and a lifting plate 8. Each column 7 is arranged in an L-shaped structure, and the vertical section of the column 7 is connected to the frame 1. Each lifting plate 8 is slidably connected to the vertical section of each column 7 through a linear motion bearing 9. A first electric push rod 10 is provided on the horizontal section of each column 7, and each first electric push rod 10 is connected to the top of each lifting plate 8. At the same time, a distance sensor is also provided on the column 7, and the detection head of the distance sensor is facing the lifting plate 8; The first electric push rod 10 can achieve precise control of the position of the lifting plate 8, thereby improving the accuracy of equipment adjustment; Furthermore, a plurality of lower boxes 3 are provided on the top surface of the turntable 2. The lower boxes 3 are arranged in sequence around the rotation axis of the turntable 2. At the same time, a tray 4 for placing the OCA optical adhesive to be processed is provided in each lower box 3. It should be noted that the number of the lower boxes 3 can be more than 3, for example, 12, and the angle between each lower box 3 is 30°. At the same time, the angle between the first lifting module and the second lifting module is also 30°, so as to correspond to each lower box 3 and ensure the accuracy of control. Furthermore, in order to improve the control accuracy of the rotation angle, an adjustment baffle 11 is provided on the outer peripheral surface of the lower box 3 facing the column 7, and a slot-type photoelectric sensor 12 is also provided on the column 7; In actual operation, when the adjustment baffle 11 is inserted into the slot-type photoelectric sensor 12, a corresponding control command can be issued to determine whether the rotation is in place, thereby performing the next operation and improving the accuracy of the operation; Furthermore, the defoaming device also includes an upper box body 5 and a vacuum module, wherein the top of the upper box body 5 is connected to the lifting plate 8 of the first lifting module, the bottom surface of the upper box body 5 is completely open, and the top of the lower box body 3 is completely open. At the same time, a plug-in ring 17 is provided on the side of the upper box body 5 facing the lower box body 3, and a plug-in groove 18 adapted to the lower box body 3 is provided on the plug-in ring 17, and a sealing strip 19 with a U-shaped cross section is provided in the plug-in groove 18; When the turntable 2 is rotated to the right position, the upper box 5 is located directly above the lower box 3. At this time, the first upper box 5 is controlled to descend by the first lifting module, and the side edges of the lower box 3 are respectively inserted into the insertion grooves 18, while squeezing the sealing strips 19, thereby achieving sealing between the upper box 5 and the lower box 3. The vacuum module includes a vacuum pump 20 and a vacuum tube 21. The outlet end of the vacuum tube 21 passes through the top of the upper box body 5 and is inserted into the upper box body 5, and its inlet end is connected to the vacuum pump 20. At the same time, a vacuum gauge 22 and an electromagnetic air breaking valve 23 are also provided on the upper box body 5. The vacuum gauge 22 and the electromagnetic air breaking valve 23 are electrically connected to the controller 6 respectively.

[0023] After the upper box body 5 and the lower box body 3 are tightly fastened together, the air in the sealed box body is extracted by a vacuum pump 20, and the vacuum degree is observed by a vacuum gauge 22 to extract the vacuum according to the set relevant parameters; Under vacuum conditions, there is a certain pressure difference between the interior of the bubble and the environment inside the box. Under the action of the pressure difference, the bubble breaks and ruptures by itself, thus achieving degassing. Compared with the existing technology, the above-mentioned defoaming operation method is not only simple, but also can achieve the indiscriminate removal of all bubbles by controlling the vacuum degree, effectively avoiding omissions, increasing the success rate of defoaming, and improving product quality; Furthermore, the defoaming device also includes a hot pressing module, which includes a hot pressing mold 24 and a second electric push rod 25. The second electric push rod 25 is installed on the top of the upper box 5. The telescopic rod of the second electric push rod 25 is connected to the hot pressing mold 24 through a pressure sensor 26. At the same time, a heating cavity 29 and a detection hole 30 are also provided on the hot pressing mold 24. The hot pressing module also includes a first electric heating plate 27 and a temperature sensor 28. The first electric heating plate 27 and the temperature sensor 28 are electrically connected to the controller 6 respectively. The hot pressing mold 24 is made of invar. After the bubbles in the OCA optical adhesive are completely broken, the first electric heating plate 27 is activated to heat the hot pressing mold 24 until its temperature reaches the set hot pressing temperature. The temperature is monitored by the temperature sensor 28. The second electric push rod 25 then moves downward and finally fits tightly with the OCA optical adhesive. At this time, the pressure sensor 26 monitors whether the extrusion force of the hot pressing mold 24 on the OCA optical adhesive reaches the specified parameters. The hot pressing of the hot pressing mold 24 can not only soften the OCA optical glue and improve its fluidity, but also the external extrusion pressure can cause the optical glue to flow again, thereby filling the voids caused by the bursting of bubbles. Moreover, since the entire hot pressing process is completed in a vacuum environment, air will not be introduced into the OCA optical glue again to form bubbles, thereby improving the quality of bubble elimination.

[0024] Secondly, the present application realizes the two operations of bubble bursting and secondary hot pressing shaping in one process, which not only helps to simplify the operation process, but also avoids the transportation of OCA optical glue between different processes, thereby improving the degassing efficiency.

[0025] Furthermore, the hot pressing module further includes a second electric heating plate 31, which is arranged on the side wall of the upper box 5, and the second electric heating plate 31 is electrically connected to the controller 6; While the hot pressing mold 24 is heated by the first electric heating plate, the internal environment of the box is heated by the second electric heating plate 31, thereby preheating the OCA optical adhesive. This ensures that the OCA optical adhesive has good fluidity when the hot pressing mold 24 contacts the OCA optical adhesive, which is beneficial to improving the efficiency of hot pressing and shaping, and further improving the degassing efficiency. Furthermore, the defoaming device also includes a release film paving module, which includes a rotating arm 32. A thrust ball bearing is also provided on the lifting plate 8 of the second lifting module. A rotating shaft is provided in the middle of the rotating arm 32. An extrusion plate adapted to the thrust ball bearing is provided on the rotating shaft. The rotating shaft is rotatably connected to the lifting plate 8 through the thrust ball bearing. At the same time, a rotating motor 33 is also provided on the lifting plate 8. The rotating motor 33 is dynamically connected to the rotating shaft through a transmission gear. Along the length direction of the rotating arm 32, suction cups 34 are provided at both ends of the rotating arm 32; at the same time, a temporary storage box for placing the release film is also provided on the frame 1; When the OCA optical adhesive after degassing and hot pressing enters the area where the second lifting module is located, the adjusting baffle 11 and the slot-type photoelectric sensor 12 cooperate with each other to determine whether the position is correct. When the judgment is qualified, the second lifting module controls the rotating arm 32 to descend, and one of the suction cups 34 is adsorbed with a release film, while the other suction cup 34 is in an empty state. Finally, the release film is applied to the OCA optical adhesive, and at the same time, the empty suction cup 34 adsorbs another release film from the temporary storage box. Then the second lifting module rises, and the suction cup 34 that has placed the release film releases the release film. During the rising process, the rotating motor 33 controls the rotating arm 32 to rotate 180 degrees. By repeating the above operation process, a continuous release film covering operation can be achieved. Furthermore, a loading manipulator and a unloading manipulator are further provided on the frame 1. Around the rotation direction of the turntable 2, the loading manipulator is provided on the rear side of the first lifting module, and the unloading manipulator is provided on the front side of the lifting module. Both the loading manipulator and the unloading manipulator are provided with suction cups 34. Furthermore, the defoaming device also includes a controller 6, which includes an industrial control computer and a PLC. The industrial control computer is connected to the PLC through a data bus, and the PLC is electrically connected to the first electric push rod 10, the second electric push rod 25, the rotating motor 33, the slot-type photoelectric sensor 12, the drive motor 15, the first electric heating plate and other electrical equipment.

[0026] Correspondingly, the present application also discloses the working process of the defoaming device. For the convenience of description, the position of the first lifting module is named the defoaming station, the position of the second lifting module is named the laminating station, the positions of the loading manipulator and the unloading manipulator are respectively the loading station and the unloading station, and a storage box or a conveyor belt is also provided at the loading station and the unloading station; When in use, the OCA optical adhesive to be defoamed is first adsorbed by the loading robot and transferred to the tray. It should be noted that the above optical adhesive is an optical adhesive with a bottom release film attached, and its top is in a bare state; Then the turntable starts and rotates according to the specified angle. When the adjustment baffle enters the slot-type photoelectric sensor, it is determined that the rotation is in place. At this time, the lower box enters the defoaming station, and the upper box is controlled by the first lifting module to descend and be sealed with the lower box. The vacuum module is then activated to create a vacuum environment within the sealed chamber. In this vacuum environment, the bubbles burst and the gas trapped within them is expelled. It should be noted that due to factors such as bubble size, internal air pressure, and the thickness of the OCA optical adhesive, the vacuum degree and vacuum holding time within the vacuum environment need to be determined based on actual test parameters. Controlling the vacuum degree parameters ensures that all bubbles burst, while controlling the time allows sufficient time for the bubbles to burst, thereby improving the degassing effect. It should be noted that multiple different control gradients can be set for the control of vacuum degree, and a certain standing time is set for each gradient. The advantage of the above control method is that it can achieve step-by-step orderly bursting of bubbles while avoiding drastic changes in vacuum degree.

[0027] After the OCA optical adhesive has been left in a vacuum environment for a specified time, the first and second electric heating plates are used to heat the adhesive radially, softening the adhesive while heating the hot pressing mold. The hot pressing mold then performs a secondary hot pressing on the adhesive, promoting its flow and filling the voids created by the bursting of bubbles. During the hot pressing process, the quality of the secondary shaping of the OCA optical adhesive is guaranteed by controlling the pressure, temperature and hot pressing time. After the hot pressing shaping is completed, the vacuum degree is gradually reduced through the electromagnetic breaker valve to prepare for the separation of the upper and lower boxes. Then, the first lifting module is controlled in reverse to separate the upper box and the lower box. At the same time, the turntable rotates to transfer the OCA optical adhesive that has been debubbled to the laminating station. After the laminating operation of the ink release film is completed by the rotating arm, the turntable rotates again to enter the unloading station. The unloading robot unloads the material. After the turntable rotates again, it can re-enter the loading station. The rotation of the turntable can realize continuous circulation operation, thereby realizing the defoaming operation of large quantities of OCA glue and improving operation efficiency; Compared with the existing technology, the present invention artificially creates a larger pressure difference between the bubble and the external environment, and realizes the natural bursting of the bubble through the pressure difference; At the same time, under the vacuum environment, there is no gas in the bubbles after the explosion. At this time, hot pressing can not only perform secondary plasticization on the OCA optical adhesive, but also fill the gaps through the reflow of the colloid without reintroducing bubbles, thereby achieving the bubble elimination operation. The two work together to achieve defoaming. Compared with the traditional extrusion defoaming method, this application not only does not affect the surface quality of the OCA optical adhesive, but also can achieve secondary plasticity and improve the flatness of the OCA optical adhesive; Secondly, under the action of pressure difference, bubbles will rupture and disintegrate on their own, and by increasing the pressure difference, various small bubbles can be further eliminated. Therefore, this application can remove bubbles of various sizes indiscriminately to the greatest extent possible, thereby increasing the defoaming rate as much as possible, avoiding bubble residue, and effectively improving the quality of OCA optical adhesive; Finally, this application only requires the OCA optical glue to be placed in a vacuum box to wait for the bubbles to naturally collapse and rupture, and the above waiting time can also be controlled by adjusting the pressure difference, thereby effectively improving the efficiency of the defoaming operation, and no additional extrusion equipment is required, simplifying the entire defoaming operation process.

[0028] The above are only preferred embodiments of the present application and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A degassing device for OCA optical adhesive, characterized in that: including a frame (1); A turntable (2), the turntable (2) being rotatably mounted on the frame (1), and the frame (1) being further provided with a first driving module connected to the power of the turntable (2); a plurality of lower boxes (3) being evenly arranged on the turntable around the rotation axis of the turntable (2), and a tray (4) for placing the OCA optical adhesive to be processed being arranged in the lower boxes (3); A first lifting module, the first lifting module being arranged on the frame (1), the first lifting module being provided with an upper box body (5) hermetically connected to the lower box body (3); the frame (1) being further provided with a vacuum module connected to the upper box body (5); A hot pressing module, the hot pressing module is arranged in the upper box (5), and the hot pressing module is used for hot pressing and eliminating holes in the gaps of the OCA optical adhesive; a second lifting module, the second lifting module being arranged on the frame (1), and being arranged at the front end of the first lifting module along the rotation direction of the turntable (2), and a release film laying module being arranged on the second lifting module; A controller (6), wherein the controller (6) is arranged on the frame (1).

2. The debubbling device for OCA optical adhesive according to claim 1, characterized in that: The structures of the first lifting module, the second lifting module and the third lifting module are completely the same, and they all include a column (7) and a lifting plate (8), each of the columns (7) is arranged on the frame (1), and each of the lifting plates (8) is slidably connected to each of the columns (7) through a linear motion bearing (9); each of the columns (7) is provided with a first electric push rod (10), and each of the first electric push rods (10) is connected to each of the lifting plates (8).

3. The degassing device for OCA optical adhesive according to claim 2, characterized in that: Each lower box (3) is provided with an adjusting baffle (11), and each upright column (7) is provided with a slot-type photoelectric sensor (12) adapted to the adjusting baffle (11).

4. The debubbling device for OCA optical adhesive according to claim 1, characterized in that: The frame (1) is provided with an annular slide rail (13), and the annular slide rail (13) is provided with a plurality of sliders (14) respectively connected to the turntable (2); the first drive module includes a drive motor (15), and the turntable (2) is provided with a drive shaft (16), and the drive shaft (16) is connected to the drive motor (15) through a bevel gear.

5. The degassing device for OCA optical adhesive according to claim 1, characterized in that: A plug-in ring (17) is provided on a side of the upper box body (5) facing the lower box body (3), and a plug-in groove (18) adapted to the lower box body (3) is provided on the plug-in ring (17), and a sealing strip (19) with a U-shaped cross section is provided in the plug-in groove (18).

6. The degassing device for OCA optical adhesive according to claim 1, characterized in that: The vacuum module comprises a vacuum pump (20) and a vacuum tube (21), wherein the inlet end of the vacuum tube (21) is communicated with the upper box (5), and the outlet end thereof is connected to the vacuum pump (20); a vacuum gauge (22) and an electromagnetic air-breaking valve (23) are also provided on the upper box (5), and the vacuum gauge (22) and the electromagnetic air-breaking valve (23) are respectively electrically connected to the controller (6).

7. The debubbling device for OCA optical adhesive according to claim 1, characterized in that: The hot pressing module group comprises a hot pressing mold (24) and a second electric push rod (25), wherein the second electric push rod (25) is connected to the hot pressing mold (24) via a pressure sensor (26); and the pressure sensor (26) is electrically connected to the controller (6).

8. The debubbling device for OCA optical adhesive according to claim 7, characterized in that: The hot pressing module further comprises a first electric heating plate (27) and a temperature sensor (28); a heating cavity (29) and a detection hole (30) are provided on the hot pressing mold (24); the first electric heating plate (27) is provided in the heating cavity (29); and the temperature sensor (28) is plugged into the detection hole (30); the first electric heating plate (27) and the temperature sensor (28) are respectively electrically connected to the controller (6).

9. The degassing device for OCA optical adhesive according to claim 8, characterized in that: The hot pressing module further comprises a second electric heating plate (31), which is arranged on the side wall of the upper box body 5) and is electrically connected to the controller (6).

10. The debubbling device for OCA optical adhesive according to claim 2, characterized in that: The release film laying module includes a rotating arm (32), which is rotatably connected to the lifting plate (8) via a rotating shaft, and the lifting plate (8) is also provided with a rotating motor (33) that is power-connected to the rotating shaft; along the length direction of the rotating arm (32), suction cups (34) are provided at both ends of the rotating arm (32).

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