Display screen defoaming device and defoaming method

Abstract

The invention discloses a display screen defoaming device and a defoaming method. The display screen defoaming device comprises a defoaming tank, the working platform is arranged in the defoaming tank and is used for bearing the display screen; the hot-pressing applying module is arranged in the defoaming tank and located over the working platform, the bottom of the hot-pressing applying module is a flexible surface, and high-temperature liquid is arranged in the hot-pressing applying module; the output end of the lifting assembly is connected with the working platform and / or the hot-pressing applying module, and the lifting assembly is used for driving the working platform and / or the hot-pressing applying module to lift; and the fluid management assembly communicates with the interior of the hot-pressing applying module and is used for regulating and controlling the medium pressure in the hot-pressing applying module. High-temperature liquid is matched with the flexible bottom of the hot-pressing applying module, a stable and uniform high-temperature and high-pressure environment can be provided, and compared with a pure gas environment, exhausting, re-inflating and re-heating are not needed when a display screen is replaced every time, so that the period is remarkably shortened, and the defoaming efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of display screen processing technology, and in particular to a display screen debubbling device and debubbling method. Background Technology

[0002] In the manufacturing process of the electronics industry, products such as displays are typically assembled from multiple layers of different materials through a bonding process. During this process, air can easily remain or become trapped at the bonding interface, forming bubbles. These bubbles not only severely affect the optical display effect and appearance quality of the product, but may also reduce its mechanical strength, sealing performance, and long-term reliability. Therefore, in many precision electronic manufacturing processes such as LCD displays and touch screens, a critical debubbling process must be performed after the initial bonding to eliminate interface defects and ensure the quality of the final product.

[0003] Currently, the commonly used degassing method involves placing the bonded products into a dedicated degassing device. Existing degassing devices often use high-temperature, high-pressure gas to create a high-temperature, high-pressure environment, using gas pressure to force the air bubbles between the bonded layers of the product to dissolve or shrink, thereby achieving the degassing purpose. When degassing the previous batch and needing to replace it with the next batch of products, the working chamber of the degassing device must be opened. Because the chamber is under high pressure, if it is forcibly opened without prior depressurization, on the one hand, the high-pressure gas will rapidly escape upon opening, causing a sharp drop in pressure within the chamber; on the other hand, this also poses a serious safety risk. Even if the pressure is depressurized before operation, the original high pressure within the chamber will drop to ambient levels after opening. After loading the new product and closing the chamber, the device must be re-injected with a large amount of gas and pressurized, and the newly injected gas must also be heated to rebuild the required high-temperature, high-pressure environment. Therefore, each product replacement process requires depressurization, pressurization, and heating, resulting in low product switching efficiency. Therefore, there is an urgent need to optimize the display screen degassing device and design a corresponding degassing method. Summary of the Invention

[0004] The purpose of this invention is to provide a display screen debubbling device and debubbling method to solve the problem of low product switching efficiency of existing debubbling devices.

[0005] To achieve this objective, the present invention adopts the following technical solution: A display screen debubbling device, comprising Degassing tank; The working platform, located inside the degassing tank, is used to support the display screen; A hot pressing module is located inside the degassing tank and directly above the working platform. The bottom of the hot pressing module is a flexible surface, and a high-temperature liquid is placed inside it. The lifting assembly has its output end connected to the working platform and / or the hot pressure application module, and is used to drive the working platform and / or the hot pressure application module to move up and down. The fluid management component is internally connected to the thermo-pressure application module and is used to regulate the pressure of the medium inside the thermo-pressure application module.

[0006] Furthermore, the fluid management component includes a delivery pump, a pressure storage source, and a second heating device. The input end of the thermo-pressure application module is connected to the output end of the pressure storage source through an input pipeline, and the output end of the thermo-pressure application module is connected to the input end of the pressure storage source through an output pipeline. The delivery pump is installed on the input pipeline. An input control valve is provided on the input pipeline, and an output control valve is provided on the output pipeline; The heating end of the second heating device extends into the pressure storage source; the pressure storage source is equipped with a temperature sensor.

[0007] Furthermore, the pressure storage source has an upper space for holding gas and a lower space for holding liquid. The input pipeline includes a liquid input branch and a gas input branch. The liquid input branch is connected to the lower space of the pressure storage source, and the gas input branch is connected to the upper space of the pressure storage source. The output pipeline is connected to the upper space of the pressure storage source; The delivery pump includes a liquid pump located on the liquid input branch and a first gas pump located on the gas input branch. The input control valve includes a liquid delivery control valve located on the liquid input branch and a gas delivery control valve located on the gas input branch. The heating end of the second heating device spans the upper and lower spaces of the pressure storage source.

[0008] Furthermore, the liquid is one of the following: heat transfer oil, silicone oil, ethylene glycol aqueous solution, and fluorinated liquid; The flexible surface material at the bottom of the hot pressing module is one of the following: fluororubber composite film, silicone rubber film, polytetrafluoroethylene film, and perfluoroether rubber film. The bottom thickness of the hot pressing module is 0.5mm-2mm.

[0009] Furthermore, a rigid constraint frame is provided on the periphery of the hot pressing module; The projected size of the rigid constraint frame on the horizontal plane is larger than the size of the working platform, so that the flexible bottom of the hot pressing module can completely cover the working platform; It also includes a first heating device, the heating end of which extends into the degassing tank; A support plate can be detachably placed on the working platform; The upper surface of the support plate / work platform is equipped with a temperature and pressure sensor for detecting the temperature and pressure applied by the hot-pressing module.

[0010] Furthermore, the output end of the lifting assembly is connected to the working platform; The lifting assembly includes a power source and a transmission mechanism. The transmission mechanism is connected between the output end of the power source and the working platform, and is used to drive the working platform to perform lifting movements under the drive of the power source. It also includes a cabinet located outside the degassing tank.

[0011] Furthermore, the degassing tank includes a tank body and a tank lid. The opening end of the tank body is provided with a first annular retaining tooth, and the tank lid is provided with a second annular retaining tooth that corresponds to and engages with the first annular retaining tooth. Both the first and second annular teeth include a plurality of protrusions arranged circumferentially and a plurality of gaps located between adjacent protrusions and arranged circumferentially. When the can lid is rotated to the first angle, the protrusion of the first annular locking tooth is aligned with the protrusion of the second annular locking tooth, so that the can body and the can lid are axially locked together. When the can lid is rotated to the second angle, the protrusion of the first annular tooth is aligned with the gap of the second annular tooth, and the protrusion of the second annular tooth is aligned with the gap of the first annular tooth, so that the can body and the can lid can be separated axially.

[0012] Furthermore, a connecting arm is hinged between the tank body and the tank lid. The first rotation axis between the connecting arm and the tank body extends in a direction parallel to the radial direction of the tank lid, and the second rotation axis between the connecting arm and the tank lid extends in a direction coincident with the axis of the tank lid. The outer circumference of the can lid is provided with a toothed ring, and a rotating handle is rotatably connected to the connecting arm. The rotating handle is provided with a gear that meshes with the toothed ring. Rotating the rotating handle can drive the can lid to rotate around its axis, thereby realizing the opening and closing of the can lid and the can body.

[0013] A degassing method based on the aforementioned display screen degassing device includes the following steps: Step S1: Open the degassing tank, place the display screen to be degassed on the work platform, and then close the degassing tank; Step S2: Drive the lifting assembly to raise the working platform, so that the display screen presses against the flexible bottom of the hot pressure application module and forms a preset pressure; Step S3: The display screen is heated by the high-temperature liquid in the hot-pressing module, and the pressure of the high-temperature liquid in the hot-pressing module is used to apply uniform pressure to the display screen by the flexible bottom to perform hot-pressing degassing. Step S4: After degassing is completed, drive the lifting assembly to lower and reset the work platform, and take out the degassed display screen; Step S5: Repeat steps S1-S4 until the debubbling process of all displays is completed.

[0014] Furthermore, before step S1, the method further includes: heating the gas and liquid in the pressure storage source using a second heating device until the liquid temperature reaches a preset value; Turn on the first gas pump, gas supply control valve and output control valve to pump the high temperature gas in the pressure storage source into the hot pressure application module, and at the same time discharge the low temperature gas in the hot pressure application module back to the pressure storage source for circulation preheating. Subsequently, the gas pump, gas control valve and output control valve are shut down, and the liquid pump and liquid control valve are turned on to deliver the high-temperature liquid in the pressure storage source to the thermo-pressure application module. In step S2, after the display screen presses against the bottom of the hot pressure application module, the pressure is judged based on the real-time pressure value detected by the temperature and pressure sensor. If the pressure is lower than the preset range, the infusion pump and infusion control valve are turned on to replenish liquid into the hot pressure application module, or the gas pump and gas control valve are turned on to replenish gas into the hot pressure application module, until the pressure reaches the required level. If the pressure is higher than the preset range, the output control valve is turned on to release pressure until the pressure meets the requirements. After all the display screens have been debubbled in step S5, the first gas pump, gas supply control valve and output control valve are turned on to pump gas into the thermo-pressure application module. The gas pressure is used to push the liquid in the thermo-pressure application module back into the pressure storage source through the output pipeline.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The display screen degassing device provided by this invention provides a stable and uniform high-temperature and high-pressure environment through the combination of high-temperature liquid and the flexible bottom of the hot-pressing module. This results in high product switching efficiency and a highly efficient and convenient workflow during degassing: First, the lifting component drives the relative movement of the working platform and / or the hot-pressing module, fully exposing the platform carrying the display screen for rapid replacement. Then, the lifting component drives the working platform and / or the hot-pressing module back to the working position, and the fluid management component fine-tunes the internal pressure of the hot-pressing module, completing the rapid product switching. Compared to a pure gas environment, because the high-pressure environment is provided by the flexible bottom of the hot-pressing module and the internal liquid, the degassing tank only needs to be at atmospheric pressure. This eliminates the need for venting, refilling, and reheating each time a display screen is replaced, significantly shortening the cycle and improving degassing efficiency.

[0016] The fluid management component in the display screen defoaming device of this invention, through the cyclical connection of the delivery pump, input pipeline, and output pipeline, as well as the input control valve and output control valve, achieves dynamic adjustment of the internal pressure of the hot-pressing module to improve the defoaming effect. Simultaneously, by separately setting up the gas input branch and the liquid input branch, and cooperating with the output pipeline, it achieves flexible and efficient switching and control of various operating modes such as cyclic preheating of the hot-pressing module and liquid drainage within the hot-pressing module. This establishes and maintains a stable, uniform, and controllable hot-pressing environment for display screen defoaming, significantly improving the defoaming effect and the continuity of production operations. The rigid constraint frame in this invention restricts the lateral deformation of the hot-pressing module, causing the flexible bottom to expand primarily downwards under pressure. This concentrates and evenly transmits pressure to the display screen, avoiding pressure dispersion, improving the defoaming effect, and protecting the hot-pressing module from damage caused by irregular deformation, thus extending its service life. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] The structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0019] Figure 1 This is a three-dimensional schematic diagram of the display screen debubbling device in this invention; Figure 2 This is a three-dimensional schematic diagram of the display screen defoaming device in this invention with the cabinet concealed. Figure 3 This is a perspective sectional view of the display screen defoaming device in this invention, with the cabinet concealed. Figure 4 This is a cross-sectional view of the display screen defoaming device in this invention with the cabinet concealed. Figure 5 This is a schematic diagram showing the connection between the hot pressure application module and the fluid management component in this invention; Figure 6 This is a schematic diagram of the first heating device and the second heating device in this invention; Figure 7This is a schematic diagram showing the connection between the working platform and the lifting assembly in this invention; Figure 8 This is a schematic diagram of the degassing tank in the present invention, with the tank lid in an open state; Figure 9 For the present invention Figure 8 Enlarged view of point A in the middle; Figure 10 Schematic diagram of degassing tank explosion in this invention Figure 1 In the picture, the can lid is at the first angle; Figure 11 Schematic diagram of degassing tank explosion in this invention Figure 2 In the picture, the lid of the can is at the second angle.

[0020] Illustration: 1. Degassing tank; 11. Tank body; 111. First annular retaining tooth; 12. Tank lid; 121. Second annular retaining tooth; 122. Gear ring; 13. Connecting arm; 14. Rotating handle; 141. Gear; 15. First heating device; 2. Working platform; 21. Support plate; 3. Hot pressing application module; 31. Rigid constraint frame; 4. Lifting assembly; 41. Power source; 42. Transmission mechanism; 5. Fluid management components; 51. Pressure storage source; 52. Second heating device; 53. Liquid input branch; 531. Infusion pump; 532. Infusion control valve; 54. Gas input branch; 541. First gas pump; 542. Gas control valve; 55. Output pipeline; 551. Output control valve; 6. Cabinet. Detailed Implementation

[0021] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0022] In the description of this invention, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component positioned centrally in the connection.

[0023] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0024] This embodiment provides a display screen debubbling device for hot-pressing debubbling of the display screen to eliminate air bubbles inside the screen and improve the bonding quality of the display screen. Combined with... Figures 1-4 As shown, the display screen debubbling device includes a debubbling tank 1, a working platform 2, a hot-pressing module 3, a lifting assembly 4, a fluid management assembly 5, a first heating device 15, and a cabinet 6. The debubbling tank 1 has a cavity to provide space for the display screen to undergo debubbling treatment. The working platform 2 is located inside the debubbling tank 1 and supports the display screen for debubbling treatment. The hot-pressing module 3 is located inside the debubbling tank 1 and directly above the working platform 2. The bottom of the hot-pressing module 3 is a flexible surface containing a high-temperature liquid. The output end of the lifting assembly 4 is connected to the working platform 2 and / or the hot-pressing module 3, driving the working platform 2 and / or the hot-pressing module 3 to move up and down, bringing them closer or further apart. The fluid management assembly 5 communicates internally with the hot-pressing module 3 and regulates the fluid medium inside the hot-pressing module 3 to control the pressure of the medium. Figure 6 As shown, the heating end of the first heating device 15 extends into the degassing tank 1 to heat the air inside the degassing tank 1, thereby maintaining the temperature of the air inside the degassing tank 1 consistent with the temperature of the high-temperature liquid inside the hot-pressing module 3, ensuring a uniform and stable temperature throughout the degassing environment, and preventing heat loss from the liquid inside the hot-pressing module 3. In a specific embodiment, the first heating device 15 includes a heating tube, and the heating tube of the first heating device 15 extends into the degassing tank 1. The cabinet 6 is located outside the degassing tank 1 to provide support; furthermore, the pressure storage source 51 is installed inside the cabinet 6. In a specific embodiment, the cabinet 6 is provided with a cabinet door, which can be opened to expose the internal degassing tank 1 for easy access to the display screen.

[0025] Combination Figure 5As shown, the fluid management component 5 includes a delivery pump, a pressure storage source 51, and a second heating device 52. The input end of the thermo-pressure application module 3 is connected to the output end of the pressure storage source 51 via an input pipeline, and the output end of the thermo-pressure application module 3 is connected to the input end of the pressure storage source 51 via an output pipeline 55. The delivery pump is installed on the input pipeline. An input control valve for controlling its on / off state is provided on the input pipeline, and an output control valve 551 for controlling its on / off state is provided on the output pipeline 55. Figure 6As shown, the heating end of the second heating device 52 extends into the pressure storage source 51. In a specific embodiment, the second heating device 52 includes a heating tube, and the heating tube of the second heating device 52 extends into the pressure storage source 51. A temperature sensor is provided inside the pressure storage source 51, and further, the temperature sensor extends into the liquid to detect the liquid temperature inside the pressure storage source 51. Further, the pressure storage source 51 has an upper space for holding gas and a lower space for holding liquid. The input pipeline includes a liquid input branch 53 and a gas input branch 54. The liquid input branch 53 communicates with the lower space of the pressure storage source 51, and the gas input branch 54 communicates with the upper space of the pressure storage source 51. The output pipeline 55 communicates with the upper space of the pressure storage source 51. The delivery pump includes a liquid pump 531 disposed on the liquid input branch 53 and a first gas pump 541 disposed on the gas input branch 54. The input control valves include a liquid inlet control valve 532 located on the liquid inlet branch 53 and a gas inlet control valve 542 located on the gas inlet branch 54. The heating end of the second heating device 52 spans the upper and lower spaces of the pressure storage source 51 and is used to heat the gaseous and liquid media therein. Before the display screen defoaming device described in this embodiment operates, the gas and liquid in the pressure storage source 51 can be heated by the second heating device 52 until the liquid temperature reaches a preset value. Then, the first gas pump 541, gas control valve 542 and output control valve 551 are turned on to pump the high-temperature gas in the pressure storage source 51 into the hot pressure application module 3, while the low-temperature gas in the hot pressure application module 3 is discharged back to the pressure storage source 51 for circulation preheating. Subsequently, the gas pump, gas control valve 542 and output control valve 551 are turned off, and the liquid pump 531 and liquid control valve 532 are turned on to deliver the high-temperature liquid in the pressure storage source 51 to the hot pressure application module 3 until a certain amount of high-temperature liquid is filled into the hot pressure application module 3. During operation, when the display screen presses against the bottom of the hot pressure application module 3, the system judges the pressure based on the real-time pressure value detected by the temperature and pressure sensor. If the pressure is lower than the preset range, the system opens the infusion pump 531 and the infusion control valve 532 to replenish liquid into the hot pressure application module 3, or opens the gas pump and the gas control valve 542 to replenish gas into the hot pressure application module 3, until the pressure reaches the required level. If the pressure is higher than the preset range, the system opens the output control valve 551 to release pressure until the pressure meets the requirements, thereby adjusting the pressure provided by the hot pressure application module 3 and the internal liquid in real time.After all degassing operations on the display screens are completed, the first gas pump 541, gas control valve 542, and output control valve 551 are activated to pump gas into the hot-pressing module 3. The gas pressure forces the liquid in the hot-pressing module 3 back into the pressure storage source 51 via the output pipeline 55. This prevents the liquid temperature in the hot-pressing module 3 from dropping and affecting the next operation when it is not in use. The liquid in the hot-pressing module 3 is then stored in the pressure storage source 51. Before the next degassing operation begins, the liquid in the pressure storage source 51 is heated to the set temperature by the second heating device 52. The pressure storage source 51 is also equipped with a pressure regulating pipeline connected to the outside environment. The pressure regulating pipeline is equipped with a second gas pump and an exchange valve to adjust the overall pressure in the pressure storage source 51 as needed.

[0026] In a specific embodiment, the liquid is one of the following: heat-conducting oil, silicone oil, ethylene glycol aqueous solution, and fluorinated liquid. These liquids have characteristics such as good temperature resistance, strong chemical stability, compatibility with the material of the hot-pressing module 3, uniform pressure transmission, and non-corrosiveness. This allows the hot-pressing module 3 to safely and stably maintain a uniform hot-pressing environment, ensuring reliable long-term operation. Furthermore, the volume fraction of ethylene glycol in the ethylene glycol aqueous solution is 40%~60%. Ethylene glycol aqueous solutions within this range have suitable viscosity, boiling point, and thermal conductivity, maintaining stability over a wide temperature range and effectively transferring heat and pressure. The flexible surface material at the bottom of the hot-pressing module 3 is one of the following: fluororubber composite film, silicone rubber film, polytetrafluoroethylene film, and perfluoroether rubber film. These materials have good high-temperature resistance, flexibility, and chemical stability, capable of withstanding the action of high-temperature liquids and maintaining shape stability. They are also compatible with the liquid medium, not prone to aging or corrosion, ensuring that the flexible bottom uniformly adheres to the display screen surface when pressure is applied. The bottom thickness of the hot-pressing module 3 is 0.5mm-2mm, which ensures sufficient mechanical strength and pressure resistance while taking into account good flexibility and heat conduction efficiency, so as to achieve a stable and uniform hot-pressing degassing effect.

[0027] The hot-pressing module 3 has a rigid constraint frame 31 around its periphery to constrain the deformation of the hot-pressing module 3 in the circumferential direction, preventing the hot-pressing module 3 from expanding circumferentially when filled with liquid or under pressure, ensuring that the flexible bottom mainly deforms downwards, thereby concentrating the pressure on the display screen on the working platform 2, improving the efficiency and uniformity of pressure transmission; the projected size of the rigid constraint frame 31 on the horizontal plane is larger than the size of the working platform 2, so that the flexible bottom of the hot-pressing module 3 can completely cover the working platform 2, avoiding edge pressure leakage, and making the pressure evenly distributed across the entire display screen surface, improving the degassing effect. A carrier plate 21 can be detachably placed on the working platform 2 for placing the display screen for easy overall transfer. The upper surface of the carrier plate 21 is provided with a temperature and pressure sensor for detecting the temperature and pressure applied by the hot-pressing module 3; in a specific embodiment, temperature and pressure sensors are provided at all four corners of the carrier plate 21, and through multi-point detection, the temperature and pressure borne by different positions of the display screen can be monitored more comprehensively, ensuring uniform temperature and pressure distribution during the hot-pressing degassing process, and avoiding incomplete degassing caused by local overheating or uneven pressure. In embodiments where the support plate 21 is not provided, a temperature and pressure sensor is provided on the upper surface of the working platform 2.

[0028] In a specific embodiment, combined with Figure 7 As shown, the output end of the lifting assembly 4 is connected to the working platform 2. By driving the working platform 2 to rise and fall, excessive deformation of the hot pressure application module 3 due to frequent rising and falling movements is avoided when driving the hot pressure application module 3 to rise and fall, which would affect the uniformity of the force applied to the bottom of the hot pressure application module 3. The hot pressure application module 3 is fixedly connected to the degassing tank 1. Further, the lifting assembly 4 includes a power source 41 and a transmission mechanism 42. The transmission mechanism 42 is connected between the output end of the power source 41 and the working platform 2, and is used to drive the working platform 2 to perform rising and falling movements under the drive of the power source 41. It should be noted that the power source 41 and transmission mechanism 42 used in this embodiment are conventional choices in the art, and their specific implementation methods are known to those skilled in the art. As long as they can drive the working platform 2 to complete the rising and falling movements, they are applicable to this embodiment, so they will not be described in detail here.

[0029] Combination Figures 8-11 As shown, the degassing tank 1 includes a tank body 11 and a tank lid 12. The open end of the tank body 11 is provided with a first annular retaining tooth 111, and the tank lid 12 is provided with a second annular retaining tooth 121 that corresponds to and engages with the first annular retaining tooth 111. Both the first annular retaining tooth 111 and the second annular retaining tooth 121 include a plurality of protrusions arranged circumferentially at intervals, and a plurality of gaps located between adjacent protrusions and arranged circumferentially at intervals. Figure 10As shown, when the can lid 12 is rotated to the first angle, the protrusion of the first annular retaining tooth 111 is aligned with the protrusion of the second annular retaining tooth 121, thereby axially locking the can body 11 and the can lid 12; combined Figure 11 As shown, when the can lid 12 is rotated to the second angle, the protrusion of the first annular retaining tooth 111 is aligned with the gap of the second annular retaining tooth 121, and the protrusion of the second annular retaining tooth 121 is aligned with the gap of the first annular retaining tooth 111, allowing the can body 11 and the can lid 12 to be axially separated. In a specific embodiment, a connecting arm 13 is hinged between the can body 11 and the can lid 12. The first rotation axis between the connecting arm 13 and the can body 11 extends in a direction parallel to the radial direction of the can lid 12, and the second rotation axis between the connecting arm 13 and the can lid 12 extends in a direction coincident with the axis of the can lid 12, allowing the can lid 12 to be laterally flipped relative to the can body 11 and rotated about its axis. The outer circumference of the can lid 12 is provided with a toothed ring 122. A rotating handle 14 is rotatably connected to the connecting arm 13. The rotating handle 14 is provided with a gear 141 that meshes with the toothed ring 122. Rotating the rotating handle 14 drives the can lid 12 to rotate around its axis, thereby realizing the opening and closing of the can lid 12 and the can body 11. When it is necessary to open the can lid 12, rotating the rotating handle 14 drives the can lid 12 to rotate around its axis through the meshing of the gear 141 and the toothed ring 122 until the can lid 12 rotates to the second angle. At this time, the protrusion of the first annular retaining tooth 111 and the gap of the second annular retaining tooth 121 are aligned, and the can body 11 and the can lid 12 can be axially separated. Then, rotating the connecting arm 13 causes it to rotate around the first rotation axis, thereby flipping the can lid 12 to the side to open the degassing can 1. When it is necessary to close, the operation is reversed, that is, first flipping the can lid 12 back to its original position, and then rotating the rotating handle 14 to rotate the can lid 12 to the first angle to achieve axial locking.

[0030] This embodiment also discloses a degassing method based on the aforementioned display screen degassing device. By using a high-temperature liquid within the hot-pressing module 3, combined with the lifting and lowering of the working platform 2, uniform hot pressure is applied to the display screen to efficiently remove air bubbles inside. The degassing method based on the aforementioned display screen degassing device includes the following steps: Step S1: Open the degassing tank 1, place the display screen to be degassed on the work platform 2, and then close the degassing tank 1; Step S2: Drive the lifting assembly 4 to raise the working platform 2, so that the display screen presses against the flexible bottom of the hot pressure application module 3 and forms a preset pressure; Step S3: The display screen is heated by the high-temperature liquid in the hot-pressing module 3, and the pressure of the high-temperature liquid in the hot-pressing module 3 is used to apply uniform pressure to the flexible bottom of the display screen to perform hot-pressing degassing. Step S4: After degassing is completed, drive the lifting assembly 4 to lower and reset the working platform 2, and take out the display screen that has completed degassing; Step S5: Repeat steps S1-S4 until the debubbling process of all displays is completed.

[0031] In a specific embodiment, before step S1, the method further includes: heating the gas and liquid in the pressure storage source 51 using the second heating device 52 until the liquid temperature reaches a preset value; turning on the first gas pump 541, gas supply control valve 542, and output control valve 551 to pump the high-temperature gas in the pressure storage source 51 into the hot-pressing module 3, while simultaneously venting the low-temperature gas in the hot-pressing module 3 back to the pressure storage source 51 for cyclic preheating; subsequently, turning off the gas pump, gas supply control valve 542, and output control valve 551, and turning on the liquid pump 531 and liquid supply control valve 532 to deliver the high-temperature liquid in the pressure storage source 51 to the hot-pressing module 3. Preheating the hot-pressing module 3 by replacing the gas in the hot-pressing module 3 with high-temperature gas creates a stable thermal environment for subsequent liquid filling.

[0032] In step S2, after the display screen presses against the bottom of the hot-pressing module 3, the pressure is determined based on the real-time pressure value detected by the temperature and pressure sensor. If the pressure is lower than the preset range, the infusion pump 531 and infusion control valve 532 are activated to replenish liquid into the hot-pressing module 3, or the gas pump and gas control valve 542 are activated to replenish gas into the hot-pressing module 3, until the pressure reaches the required level. If the pressure is higher than the preset range, the output control valve 551 is activated to release pressure until the pressure meets the requirements. Through real-time feedback from the temperature and pressure sensor, the fluid medium in the hot-pressing module 3 is dynamically adjusted to ensure that the pressure applied to the display screen is always maintained within the preset range. This avoids incomplete degassing due to insufficient pressure or damage to the display screen due to excessive pressure, thus improving the accuracy and safety of the degassing process.

[0033] After all the degassing work on the display screen is completed in step S5, the first gas pump 541, gas control valve 542, and output control valve 551 are turned on to pump gas into the hot-pressing module 3. The gas pressure is used to push the liquid in the hot-pressing module 3 back into the pressure storage source 51 through the output pipeline 55. To prevent the liquid temperature in the hot-pressing module 3 from dropping when it is not in operation and affecting the next operation, the liquid in the hot-pressing module 3 is pushed back into the pressure storage source 51 for storage. Before the next degassing operation begins, the liquid in the pressure storage source 51 is heated to the set temperature by the second heating device 52.

[0034] The display screen degassing device provided by this invention provides a stable and uniform high-temperature and high-pressure environment through the flexible bottom of the hot-pressing module 3 and the high-temperature liquid. This results in high product switching efficiency and a highly efficient and convenient workflow: First, the lifting assembly 4 drives the relative movement of the working platform 2 and / or the hot-pressing module 3, fully exposing the working platform 2 carrying the display screen, allowing for rapid screen replacement. Subsequently, the lifting assembly 4 drives the working platform 2 and / or the hot-pressing module 3 back to the working position, and the fluid management assembly 5 fine-tunes the internal pressure of the hot-pressing module 3, completing the rapid product switching. Compared to a pure gas environment, since the high-pressure environment is provided by the flexible bottom of the hot-pressing module 3 and the internal liquid, the degassing tank 1 only needs to be at atmospheric pressure. This eliminates the need for venting, refilling, and reheating each time a display screen is replaced, significantly shortening the cycle and improving degassing efficiency.

[0035] In this embodiment, the fluid management component 5 in the display screen debubbling device, through the cyclic connection of the delivery pump, input pipeline, and output pipeline 55, as well as the input control valve and output control valve 551, achieves dynamic adjustment of the internal pressure of the hot-pressing module 3 to improve the debubbling effect. Simultaneously, the separate arrangement of the gas input branch 54 and the liquid input branch 53, in conjunction with the output pipeline 55, enables flexible and efficient switching and control of various operating modes, such as cyclic preheating of the hot-pressing module 3 and liquid drainage within the hot-pressing module 3. This establishes and maintains a stable, uniform, and controllable hot-pressing environment for display screen debubbling, significantly improving the debubbling effect and the continuity of production operations. In this embodiment, the rigid constraint frame 31 restricts the lateral deformation of the hot-pressing module 3, causing the flexible bottom to primarily expand downwards under pressure. This concentrates and evenly transmits pressure to the display screen, preventing pressure dispersion, improving the debubbling effect, and protecting the hot-pressing module 3 from damage caused by irregular deformation, thus extending its service life.

[0036] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A display screen debubbling device, characterized in that: include Degassing tank (1); The working platform (2) is located inside the degassing tank (1) and is used to support the display screen; The hot pressing module (3) is located inside the degassing tank (1) and directly above the working platform (2). The bottom of the hot pressing module (3) is a flexible surface, and a high-temperature liquid is placed inside it. The lifting assembly (4) has its output end connected to the working platform (2) and / or the hot pressure application module (3) for driving the working platform (2) and / or the hot pressure application module (3) to move up and down; The fluid management component (5) is internally connected to the hot pressure application module (3) and is used to regulate the pressure of the medium inside the hot pressure application module (3).

2. The display screen debubbling device according to claim 1, characterized in that: The fluid management component (5) includes a delivery pump, a pressure storage source (51), and a second heating device (52). The input end of the thermo-pressure application module (3) is connected to the output end of the pressure storage source (51) through an input pipeline, and the output end of the thermo-pressure application module (3) is connected to the input end of the pressure storage source (51) through an output pipeline (55). The delivery pump is installed on the input pipeline. An input control valve is provided on the input pipeline, and an output control valve (551) is provided on the output pipeline (55). The heating end of the second heating device (52) extends into the pressure storage source (51); the pressure storage source (51) is equipped with a temperature sensor.

3. The display screen debubbling device according to claim 2, characterized in that: The pressure storage source (51) has an upper space for holding gas and a lower space for holding liquid. The input pipeline includes a liquid input branch (53) and a gas input branch (54). The liquid input branch (53) is connected to the lower space of the pressure storage source (51), and the gas input branch (54) is connected to the upper space of the pressure storage source (51). The output pipeline (55) is connected to the upper space of the pressure storage source (51); The delivery pump includes a liquid pump (531) installed on the liquid input branch (53) and a first gas pump (541) installed on the gas input branch (54). The input control valve includes a liquid delivery control valve (532) provided on the liquid input branch (53) and a gas delivery control valve (542) provided on the gas input branch (54). The heating end of the second heating device (52) spans the upper and lower spaces of the pressure storage source (51).

4. The display screen debubbling device according to claim 1, characterized in that: The liquid is one of the following: heat transfer oil, silicone oil, ethylene glycol aqueous solution, and fluorinated liquid; The bottom flexible surface material of the hot pressing module (3) is one of fluororubber composite film, silicone rubber film, polytetrafluoroethylene film, and perfluoroether rubber film; The bottom thickness of the hot pressing module (3) is 0.5mm-2mm.

5. The display screen debubbling device according to claim 1, characterized in that: The hot pressing module (3) is provided with a rigid constraint frame (31) on its periphery. The projected size of the rigid constraint frame (31) on the horizontal plane is larger than the size of the working platform (2) so that the flexible bottom of the hot pressing module (3) can completely cover the working platform (2). It also includes a first heating device (15), the heating end of which extends into the degassing tank (1); A support plate (21) is detachably placed on the work platform (2); The upper surface of the support plate (21) / working platform (2) is provided with a temperature and pressure sensor for detecting the temperature and pressure applied by the hot pressure application module (3).

6. The display screen debubbling device according to claim 1, characterized in that: The output end of the lifting component (4) is connected to the working platform (2); The lifting assembly (4) includes a power source (41) and a transmission mechanism (42). The transmission mechanism (42) is connected between the output end of the power source (41) and the working platform (2) and is used to drive the working platform (2) to perform lifting movements under the drive of the power source (41). It also includes a cabinet (6) located outside the degassing tank (1).

7. The display screen debubbling device according to claim 1, characterized in that: The degassing tank (1) includes a tank body (11) and a tank cover (12). The opening end of the tank body (11) is provided with a first annular locking tooth (111), and the tank cover (12) is provided with a second annular locking tooth (121) that corresponds to and cooperates with the first annular locking tooth (111). Both the first annular tooth (111) and the second annular tooth (121) include a plurality of protrusions arranged circumferentially and a plurality of gaps located between adjacent protrusions and arranged circumferentially. When the can lid (12) is rotated to the first angle, the protrusion of the first annular tooth (111) is aligned with the protrusion of the second annular tooth (121), so that the can body (11) and the can lid (12) are axially locked. When the can lid (12) is rotated to the second angle, the protrusion of the first annular tooth (111) is aligned with the gap of the second annular tooth (121), and the protrusion of the second annular tooth (121) is aligned with the gap of the first annular tooth (111), so that the can body (11) and the can lid (12) can be axially separated.

8. The display screen debubbling device according to claim 7, characterized in that: A connecting arm (13) is hinged between the tank body (11) and the can lid (12). The first rotation axis between the connecting arm (13) and the tank body (11) extends in a direction parallel to the radial direction of the can lid (12). The second rotation axis between the connecting arm (13) and the can lid (12) extends in a direction coincident with the axis of the can lid (12). The outer periphery of the can lid (12) is provided with a toothed ring (122), and a rotating handle (14) is rotatably connected to the connecting arm (13). The rotating handle (14) is provided with a gear (141) that meshes with the toothed ring (122). Rotating the rotating handle (14) can drive the can lid (12) to rotate around its axis, thereby realizing the opening and closing of the can lid (12) and the can body (11).

9. A degassing method based on the display screen degassing device according to any one of claims 1-8, characterized in that, Includes the following steps: Step S1: Open the degassing tank (1), place the display screen to be degassed on the work platform (2), and then close the degassing tank (1). Step S2: Drive the lifting assembly (4) to raise the work platform (2), so that the display screen presses against the flexible bottom of the hot pressure application module (3) and forms a preset pressure; Step S3: The display screen is heated by the high-temperature liquid in the hot-pressing module (3), and the pressure of the high-temperature liquid in the hot-pressing module (3) is used to apply uniform pressure to the flexible bottom of the display screen to perform hot-pressing degassing. Step S4: After degassing is completed, drive the lifting assembly (4) to lower and reset the working platform (2) and take out the display screen that has completed degassing; Step S5: Repeat steps S1-S4 until the debubbling process of all displays is completed.

10. The degassing method according to claim 9, characterized in that: Before step S1, the method further includes heating the gas and liquid in the pressure storage source (51) by means of the second heating device (52) until the liquid temperature reaches a preset value; Turn on the first gas pump (541), gas control valve (542) and output control valve (551) to pump the high temperature gas in the pressure storage source (51) into the hot pressure application module (3), and at the same time discharge the low temperature gas in the hot pressure application module (3) back to the pressure storage source (51) for cyclic preheating; Subsequently, the gas pump, gas control valve (542) and output control valve (551) are shut down, and the liquid pump (531) and liquid control valve (532) are turned on to deliver the high-temperature liquid in the pressure storage source (51) to the thermo-pressure application module (3). In step S2, after the display screen presses against the bottom of the hot pressure application module (3), the real-time pressure value detected by the temperature and pressure sensor is used to determine whether the pressure is lower than the preset range. If the pressure is lower than the preset range, the infusion pump (531) and the infusion control valve (532) are turned on to replenish the liquid into the hot pressure application module (3), or the gas pump and the gas control valve (542) are turned on to replenish the gas into the hot pressure application module (3) until the pressure reaches the required level. If the pressure is higher than the preset range, the output control valve (551) is turned on to release the pressure until the pressure meets the requirements. After all the display screen debubbling work is completed in step S5, the first gas pump (541), gas control valve (542) and output control valve (551) are turned on to pump gas into the hot pressure application module (3) and use the gas pressure to push the liquid in the hot pressure application module (3) back into the pressure storage source (51) through the output pipeline (55).

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