A gravity control system and its adapted pressure-maintaining fixture

Abstract

The present invention relates to the technical field of mobile phone screen bonding system, and discloses a gravity control system and a pressure-maintaining fixture adapted thereto, which solves the problem in the prior art that a large amount of air enters a vacuum bonding chamber when a curved screen is taken out, thereby affecting the bonding efficiency. The present invention comprises a workbench, a fixed table plate is arranged on the table top of the workbench, a magnetic drive component is arranged on the bottom of the fixed table plate, the magnetic drive component comprises a stepper motor, a circular rotating table, a guide plate and a plurality of slide plates, the stepper motor is arranged on the top of the table top of the workbench, and the stepper motor is used to drive the circular rotating table to rotate. The present invention divides a linear channel into three independent cavities, so that no matter whether a pressure-maintaining fixture component to be bonded is loaded into the linear channel, or a pressure-maintaining fixture component loaded after bonding is moved out of the linear channel, the linear channel can maintain a good vacuum environment, and there is no need to repeatedly evacuate the linear channel, thereby improving the bonding efficiency for the curved screen.

Description

Technical Field

[0001] The present invention relates to the technical field of mobile phone screen laminating systems, and in particular to a gravity control system and a pressure-maintaining fixture adapted thereto. Background Art

[0002] With the advancement of technology, curved screens have also begun to enter the lives of ordinary users. Compared with ordinary flat screens, curved screens have many advantages, such as improving sensory experience and having better three-dimensional display effects. The production difficulty of curved screens is higher than that of ordinary screens. When processing and manufacturing curved screens, hard curved glass and flexible curved LCD panels need to be bonded.

[0003] For example, the invention patent with Chinese patent publication number CN1 14043734A discloses a screen bonding device and bonding method thereof, which relates to the field of flexible screen bonding, including a device mounting platform, a feeding channel, a cleaning platform, the cleaning platform is arranged at the rear end of the left side of the upper surface of the device mounting platform, a cleaning component, the cleaning component is arranged at the rear end of the cleaning platform, an OCA bonding platform, the OCA bonding platform is arranged on the right side of the cleaning platform, an OCA bonding component, the OCA bonding component is arranged on the front side of the OCA bonding platform, a transfer component, the transfer component is arranged at the front end of the middle part of the upper surface of the device mounting platform, a vacuum bonding chamber, the vacuum bonding chamber is arranged on the right side of the transfer component, a bonding component, the bonding component is arranged inside the vacuum bonding chamber, and a six-axis manipulator is arranged in the middle of the device mounting platform. The advantages of the present invention are: different bonding methods are designed for OCA bonding and curved glass bonding respectively, and airbag-type contour bonding is adopted for curved bonding, which effectively eliminates the internal bubble defects when the curved screen is bonded, and improves the production yield of the curved screen.

[0004] During the bonding process between the curved glass and the curved liquid crystal panel, the bubbles between the curved glass and the curved liquid crystal panel are eliminated by evacuating the bonding cavity. However, according to the existing technology, after evacuating a group of curved glass and curved liquid crystal panel, the complete panels after bonding need to be taken out. At this time, a large amount of air will enter the vacuum bonding cavity. When the next bonding is performed, it will take a certain amount of time to evacuate the cavity again, which not only affects the bonding efficiency, but also causes a lot of unnecessary energy waste.

[0005] To this end, we propose a gravity control system and its adapted pressure-maintaining fixture to solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to provide a gravity control system and a corresponding pressure-maintaining fixture to solve the problem that, when the curved screen is taken out, a large amount of air will enter the vacuum bonding chamber of the existing curved screen bonding equipment mentioned in the above-mentioned background technology. When the next bonding is performed, it takes a certain amount of time to re-evacuate the chamber, which affects the bonding efficiency.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a gravity control system and a pressure-maintaining fixture adapted therefor, comprising a workbench, a fixed table plate is arranged on the table top of the workbench, a magnetic drive assembly is arranged at the bottom of the fixed table plate, the magnetic drive assembly comprises a stepper motor, a circular rotating table, a guide plate and a plurality of slide plates, the stepper motor is arranged at the top of the table top of the workbench, the stepper motor is used to drive the circular rotating table to rotate, the guide plate is arranged at the bottom of the fixed table plate, a plurality of slide plates are evenly distributed around the circular rotating table, each slide plate is slidably connected to a first permanent magnet, a plurality of second permanent magnets equal in number to and corresponding to the first permanent magnets are arranged on the top of the fixed table, the guide plate is used to guide the movement of the first permanent magnet, each first permanent magnet attracts the corresponding second permanent magnet, and a pressure-maintaining fixture assembly is arranged on the top of each second permanent magnet;

[0008] A continuous pressure-maintaining component, which includes a linear channel, an intermittent opening and closing component, a pressing and fitting component, two first sealing plates, and two second sealing plates. The linear channel is fixedly connected to the top of a fixed platen. The two first sealing plates and the two second sealing plates are both slidingly and sealingly connected to the linear channel in a vertical direction. The two first sealing plates are fixedly connected, and the two second sealing plates are fixedly connected. The intermittent opening and closing component is used to cross-control the opening and closing of the two first sealing plates and the two second sealing plates. The pressing and fitting component is used to continuously maintain the pressure of the pressure-maintaining jig assembly.

[0009] Through the above technical solution, the linear channel can be divided into three independent cavities, so that no matter whether the pressure-holding jig assembly to be bonded is loaded into the linear channel, or the pressure-holding jig assembly after bonding is moved out of the linear channel, the linear channel can maintain a good vacuum environment, and there is no need to repeatedly evacuate the linear channel, thereby improving the bonding efficiency of the curved screen.

[0010] Furthermore, a circular slide rail is arranged on the table top of the workbench, and a plurality of support rods are slidably connected to the circular slide rail. The top of each support rod is fixedly connected to the bottom of the circular rotating table. The output shaft of the stepper motor is fixedly connected to the bottom center of the circular rotating table. A vacuum pipe is arranged at the top of the linear channel.

[0011] Through the above technical solution, the stepper motor is used to drive the circular rotating table to rotate precisely.

[0012] Furthermore, each slide plate is slidably connected to a sliding ring, the top of each sliding ring is rotatably connected to a first permanent magnet via a rotating shaft, a guide groove is provided on the guide plate, the guide groove is composed of an arc segment and a straight line segment, and each sliding ring is slidably matched with the guide groove.

[0013] Through the above technical solution, when the stepper motor drives the circular rotating table to rotate precisely, the first permanent magnet can move along the guide groove, thereby driving the second permanent magnet that is attracted to the first permanent magnet to slide on the fixed table, and finally driving multiple pressure-maintaining fixture assemblies to move along the guide groove.

[0014] Furthermore, each pressure-maintaining jig assembly includes a convex jig and a concave jig, the bottom of the convex jig is fixedly connected to the top of a second permanent magnet, the side of the convex jig is rotatably connected to an opening and closing shaft, the concave jig is fixedly connected to the opening and closing shaft, a transmission shaft is provided on the side of the convex jig away from the closing shaft, the transmission shaft is transmission-connected to the opening and closing shaft, and an opening and closing gear is provided at the end of each transmission shaft, and the opening and closing gear is used to control the expansion and closing of the convex jig and the concave jig.

[0015] Furthermore, a mounting groove is provided on the top of each convex fixture and each concave fixture, and a negative pressure adsorption hole is provided on the top surface of each convex fixture and each concave fixture.

[0016] Through the above technical solution, first, the staff or the robotic arm places the curved glass on the concave jig, and the curved liquid crystal panel on the convex jig, and then the stepper motor transports the pressure holding jig assembly, and during the transportation process, the convex jig and the concave jig will automatically close, thereby pre-bonding the curved glass and the curved liquid crystal panel.

[0017] Furthermore, two opening and closing rack groups are arranged on the table top of the workbench, each of which includes an upper opening and closing rack and a lower opening and closing rack, and each opening and closing gear cooperates with the upper opening and closing rack and the lower opening and closing rack structure.

[0018] Through the above technical solution, the opening and closing rack group can automatically switch the pressure-maintaining fixture assembly in a moving state between the expanded and closed states.

[0019] Furthermore, each convex fixture is provided with two automatic adsorption components, and each automatic adsorption component includes an exhaust pipe, a sealing piston, an exhaust shaft, an acceleration shaft and an exhaust gear. The exhaust pipe is arranged inside the convex fixture, and the sealing piston slides with the exhaust pipe in the vertical direction. The exhaust shaft is rotatably connected in the convex fixture, and the exhaust shaft and the sealing piston are connected by a crank connecting rod transmission. The acceleration shaft is arranged above the exhaust shaft, and the exhaust shaft and the acceleration shaft are connected by an acceleration gear set. The exhaust gear is fixedly connected to the acceleration shaft.

[0020] Furthermore, the top of one of the exhaust pipes is connected to the negative pressure adsorption hole on the convex fixture through the first air inlet pipe, and the air outlet end of the exhaust pipe is connected to the outside air through the first air outlet pipe. The air inlet end of the other exhaust pipe is connected to the negative pressure adsorption hole on the concave fixture through the second air inlet pipe, and the air outlet end of the exhaust pipe is connected to the outside air through the second air outlet pipe. One-way valves are provided in the first air inlet pipe, the second air inlet pipe, the first air outlet pipe and the second air outlet pipe, and the two exhaust gears are staggered on the fixed platen.

[0021] Furthermore, a second vacuum rack and two first vacuum racks are arranged on the top of the fixed platen, each vacuum gear close to the inner side of the fixed platen cooperates with the first vacuum rack structure, and each vacuum gear close to the outer side of the fixed platen cooperates with the two first vacuum rack structures.

[0022] Through the above technical scheme, when the vacuum gear contacts the corresponding first vacuum rack, the vacuum gear will be driven, and then the vacuum shaft can be driven to rotate at high speed through the acceleration gear set, so that the sealing piston can reciprocate in the vacuum pipe, and the negative pressure adsorption holes opened on the corresponding convex fixture or concave fixture can be evacuated, and then the positions of the curved glass and the curved liquid crystal panel can be switched, so as to facilitate rolling and pressure-maintaining bonding of the curved screen.

[0023] Furthermore, a rolling assembly is arranged above the workbench, and the rolling assembly includes a fixed frame, a cylinder, a pushing frame and a flexible roller. The fixed frame is arranged above the workbench, and the cylinder is arranged vertically downward in the fixed frame. The pushing frame is fixedly connected to the output end of the cylinder, and the flexible roller is rotatably connected to the bottom of the pushing frame, and the flexible roller is located between the two opening and closing rack groups.

[0024] Through the above technical solution, the cylinder drives the flexible roller to descend to a certain height. When the concave fixture carries the bonded curved glass and curved liquid crystal panel through, the curved liquid crystal panel and the curved glass can be rolled to remove bubbles in advance, and in particular, the curved surface positions of the curved liquid crystal panel and the curved glass can be rolled and bonded to avoid warping.

[0025] Furthermore, the intermittent opening and closing assembly includes a connecting main shaft, two cams, two sliding seats and two groups of parallelogram connecting rods. The connecting main shaft is rotatably connected to the top outer wall of the linear channel. The two cams are spaced apart and sleeved on the connecting main shaft, and the two cams are symmetrically arranged on the left and right. The two sliding seats are respectively located on one side of a cam, and each sliding seat is slidably connected with an L-shaped lifting block. The two groups of parallelogram connecting rods are respectively located on one side of a sliding seat, and the bottom of each group of parallelogram connecting rods is hinged to the linear channel, and the top of each group of parallelogram connecting rods is respectively hinged to two first sealing plates and two second sealing plates. Each cam corresponds to an L-shaped lifting block, and each L-shaped lifting block also corresponds to a group of parallelogram connecting rods. One end of each L-shaped lifting block slides with the outer surface of the corresponding cam, and the other end of each L-shaped lifting block is movably hinged to the middle node of the corresponding parallelogram connecting rod.

[0026] Through the above technical solution, the stepper motor drives multiple pressure-maintaining fixture components to move along the guide slot, and can also drive the connecting spindle to rotate synchronously, so that the two first sealing plates and the two second sealing plates can be opened and closed alternately. The linear channel can maintain a good vacuum environment during the bonding process, and there is no need to repeatedly evacuate the linear channel, thereby improving the bonding efficiency of the curved screen.

[0027] Furthermore, a linkage shaft is fixedly connected to the output shaft of the stepping motor, a conical gear disc is rotatably connected to the top of the fixed table, and the linkage shaft is drivingly connected to the connecting main shaft through the conical gear disc.

[0028] Furthermore, the pressing and fitting component includes an annular guide rail, a conveyor belt, a synchronous belt and two rotating rods. The annular guide rail is arranged on the inner wall of the linear channel. The two rotating rods are rotatably connected to the inner wall of the linear guide rail. The conveyor belt is transmission-connected to the two rotating rods. Two connecting sliders are symmetrically arranged on the annular guide rail. One end of each connecting slider is hinged to the conveyor belt. The other end of each connecting slider is provided with a group of dampers. Each group of dampers is provided with several dampers, and the several dampers are distributed in a matrix manner. One end of each group of dampers is hinged to the connecting slider. A flattening mold is provided at the end of each group of dampers away from the connecting slider. The flattening mold cooperates with the top structure of multiple convex fixtures.

[0029] Through the above technical solution, the stepper motor can drive multiple pressure-holding jig assemblies to move along the guide groove, and can also drive two connecting sliders to move along the annular guide rail, thereby driving the two flattening molds to move, and the displacement speed of the flattening mold is consistent with the displacement speed of the pressure-holding jig assembly on the straight section of the guide groove. The flattening mold can continuously press the curved liquid crystal panel and the curved glass with a constant pressure, thereby achieving pressure-holding bonding of the curved liquid crystal panel and the curved glass. The difference from the prior art is that the flattening mold can move synchronously with the curved liquid crystal panel and the curved glass, and the pressure-holding bonding process can be carried out continuously without interruption.

[0030] The present invention also discloses a gravity control system, comprising the following steps:

[0031] S1: The stepper motor drives multiple pressure-maintaining fixture components to move along the guide slide. At the same time, the stepper motor can also drive two connecting slides to move along the annular guide rail;

[0032] S2: The connecting slider moves along the annular guide rail to drive the two flattening dies to move. The displacement speed of the flattening dies is consistent with the displacement speed of the pressure holding fixture assembly on the straight section of the guide slot.

[0033] S3: The flattening mold continuously presses the curved liquid crystal panel and the curved glass with a constant pressure, and the curved liquid crystal panel and the curved glass are pressure-maintained and laminated;

[0034] S4: The gravity of the pressure-maintaining fit is controlled by adjusting the damping of the damper.

[0035] Compared with the prior art, the present invention has the following beneficial effects:

[0036] Firstly, the present invention is an improvement on the problem in the prior art that a large amount of air enters the vacuum bonding chamber when the curved screen bonding equipment takes out the curved screen, and it takes a certain amount of time to re-evacuate the chamber during the next bonding, which affects the bonding efficiency. In the present invention, the linear channel is divided into three independent cavities, so that no matter whether the pressure-holding jig assembly to be bonded enters the linear channel or the pressure-holding jig assembly after bonding is moved out of the linear channel, the linear channel can maintain a good vacuum environment, and there is no need to repeatedly evacuate the linear channel, thereby improving the bonding efficiency of the curved screen.

[0037] Secondly, in the present invention, the cylinder drives the flexible roller to descend to a certain height. When the concave fixture carries the bonded curved glass and curved liquid crystal panel through, the curved liquid crystal panel and the curved glass can be rolled to remove bubbles in advance, and in particular, the curved surface positions of the curved liquid crystal panel and the curved glass can be rolled and bonded to avoid warping.

[0038] Thirdly, in the present invention, when the stepper motor drives the circular rotating table to rotate precisely, the first permanent magnet can be moved along the guide groove, thereby driving the second permanent magnet that is attracted to the first permanent magnet to slide on the fixed table plate, and finally driving multiple pressure-maintaining jig assemblies to move along the guide groove, thereby ensuring the airtightness between the fixed table plate and the linear channel, and preventing air leakage.

[0039] Fourthly, in the present invention, the curved glass is placed on the concave jig by a worker or a robotic arm, and the curved liquid crystal panel is placed on the convex jig. Then the stepper motor transports the pressure-maintaining jig assembly, and during the transportation process, the opening and closing gear will contact the upper opening and closing rack. At this time, as the circular rotating table continues to rotate, the convex jig and the concave jig will automatically close, and the curved glass and the curved liquid crystal panel can be pre-bonded without manual alignment, and the bonding accuracy is higher.

[0040] Fifth, in the present invention, when the exhaust gear contacts the corresponding first exhaust rack, the exhaust gear will be driven, and then the exhaust shaft can be driven to rotate at high speed through the acceleration gear set, so that the sealing piston can reciprocate in the exhaust pipe, and the negative pressure adsorption holes opened on the corresponding convex fixture or concave fixture can be exhausted, and then the positions of the curved glass and the curved liquid crystal panel can be switched, so as to facilitate rolling and pressure-maintaining lamination of the curved screen;

[0041] Sixth, in the present invention, while the stepper motor drives multiple pressure-holding jig assemblies to move along the guide slot, it can also drive two connecting sliders to move along the annular guide rail, and then drive the two flattening molds to move, and the displacement speed of the flattening mold is consistent with the displacement speed of the pressure-holding jig assembly on the straight section of the guide slot. The flattening mold can continuously press the curved liquid crystal panel and the curved glass with a constant pressure, thereby achieving pressure-holding bonding of the curved liquid crystal panel and the curved glass. The difference from the prior art is that the flattening mold can move synchronously with the curved liquid crystal panel and the curved glass, the pressure-holding bonding process can be carried out continuously without interruption, and the gravity of the bonding can be controlled by adjusting the damping of the damper. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0043] Figure 2 It is a structural schematic diagram of the first sealing plate in the present invention;

[0044] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0045] Figure 4 It is a structural schematic diagram of the guide chute in the present invention;

[0046] Figure 5 It is a structural schematic diagram of the guide plate in the present invention;

[0047] Figure 6 It is a structural schematic diagram of a conical gear disc in the present invention;

[0048] Figure 7 For the present invention Figure 6 Enlarged view of point B in the middle;

[0049] Figure 8 It is a structural schematic diagram of the push frame in the present invention;

[0050] Fig. 9 It is a schematic diagram of the structure of the sliding ring in the present invention;

[0051] Fig.10 It is a schematic diagram of the structure of the upper opening and closing rack in the present invention;

[0052] Fig.11 It is a structural schematic diagram of the second air extraction rack in the present invention;

[0053] Fig.12 It is a structural schematic diagram of the linkage shaft in the present invention;

[0054] Fig.13 For the present invention Fig.12 Enlarged view of point C in the middle;

[0055] Fig.14 It is a structural schematic diagram of the conveyor belt in the present invention;

[0056] Fig.15 It is a schematic structural diagram of the parallelogram connecting rod in the present invention;

[0057] Fig.16 It is a structural schematic diagram of the cam in the present invention.

[0058] In the figure: 1. workbench; 2. continuous pressure holding assembly; 3. pressure holding fixture assembly; 4. rolling assembly; 5. fixed frame; 6. circular slide rail; 7. vacuum pipe; 8. linear channel; 9. first sealing plate; 10. second sealing plate; 11. support rod; 12. stepper motor; 13. fixed table; 14. guide plate; 15. convex fixture; 16. concave fixture; 17. slide plate; 18. sliding ring; 19. opening and closing shaft; 20. transmission shaft; 21. opening and closing gear; 22. second air inlet pipe; 23. circular rotating table; 24. guide slide; 25. connecting spindle; 26. conical gear disc; 27. linkage shaft; 28. acceleration shaft; 29. ​​second air outlet pipe; 30. Second vacuum rack; 31, first vacuum rack; 32, upper opening and closing rack; 33, lower opening and closing rack; 34, pushing frame; 35, cylinder; 36, flexible roller; 37, rotating shaft; 38, first permanent magnet; 39, second permanent magnet; 40, vacuum shaft; 41, vacuum gear; 42, vacuum pipe; 43, acceleration gear set; 44, sealing piston; 45, crank connecting rod; 46, annular guide rail; 47, connecting slider; 48, damper; 49, flattening mold; 50, conveyor belt; 51, first air outlet pipe; 52, rotating rod; 53, synchronous belt; 54, parallelogram connecting rod; 55, sliding seat; 56, cam; 57, L-shaped lifting block; 58, first air inlet pipe. DETAILED DESCRIPTION

[0059] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0060] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0061] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0062] Example 1

[0063] In an embodiment of the present invention, a gravity control system and a pressure-maintaining fixture adapted therefor are provided. Figure 1-Figure 6 ,as well as Figure 13-Figure 16 As shown, a workbench 1 is included, a fixed table plate 13 is fixedly connected to the table top of the workbench 1, a magnetic drive assembly is arranged at the bottom of the fixed table plate 13, and the magnetic drive assembly includes a stepper motor 12, a circular rotating table 23, a guide plate 14 and a plurality of slide plates 17. The stepper motor 12 is arranged on the top of the table top of the workbench 1, and the stepper motor 12 is used to drive the circular rotating table 23 to rotate. The guide plate 14 is arranged at the bottom of the fixed table plate 13, and the plurality of slide plates 17 are evenly distributed around the circular rotating table 23. A first permanent magnet 38 is slidably connected to each slide plate 17, and a plurality of second permanent magnets 39 equal in number to and corresponding to the first permanent magnets 38 are arranged on the top of the fixed table. The guide plate 14 is used to guide the movement of the first permanent magnet 38, and each first permanent magnet 38 attracts each other with the corresponding second permanent magnet 39, and a pressure-maintaining fixture assembly 3 is arranged on the top of each second permanent magnet 39;

[0064] The continuous pressure maintaining component 2 includes a linear channel 8, an intermittent opening and closing component, a pressing and fitting component, two first sealing plates 9 and two second sealing plates 10. The linear channel 8 is fixedly connected to the top of the fixed platen 13. The two first sealing plates 9 and the two second sealing plates 10 are both slidingly and sealingly connected to the linear channel 8 in the vertical direction. The two first sealing plates 9 are fixedly connected, and the two second sealing plates 10 are fixedly connected. The intermittent opening and closing component is used to cross-control the opening and closing of the two first sealing plates 9 and the two second sealing plates 10. The pressing and fitting component is used to continuously maintain the pressure of the pressure maintaining fixture component 3.

[0065] In the present invention, the linear channel 8 can be divided into three independent cavities, so that no matter whether the pressure-holding jig assembly 3 to be bonded enters the linear channel 8 or the pressure-holding jig assembly 3 after bonding is moved out of the linear channel 8, the linear channel 8 can maintain a good vacuum environment, and there is no need to repeatedly evacuate the linear channel 8, thereby improving the bonding efficiency for the curved screen.

[0066] Specifically, Figure 3-Figure 4 As shown, a circular slide rail 6 is arranged on the table top of the workbench 1, and a plurality of support rods 11 are slidably connected to the circular slide rail 6. The top of each support rod 11 is fixedly connected to the bottom of the circular rotating table 23, and the output shaft of the stepper motor 12 is fixedly connected to the bottom center of the circular rotating table 23. A vacuum pipe 7 is arranged at the top of the linear channel 8, and the stepper motor 12 is used to drive the circular rotating table 23 to rotate precisely. The vacuum pipe 7 is connected to the vacuum pump to keep the linear channel 8 in a vacuum environment (the vacuum pump is a prior art and is not shown in the figure).

[0067] Specifically, Figure 5 and Fig. 9 As shown, each slide plate 17 is slidably connected with a sliding ring 18, and the top of each sliding ring 18 is rotatably connected to a first permanent magnet 38 through a rotating shaft 37. A guide groove 24 is provided on the guide plate 14, and the guide groove 24 is composed of an arc segment and a straight line segment. Each sliding ring 18 is slidably matched with the guide groove 24.

[0068] In the present invention, when the stepper motor 12 drives the circular rotating table 23 to rotate precisely, the first permanent magnet 38 can be moved along the guide groove 24, thereby driving the second permanent magnet 39 that is attracted to the first permanent magnet 38 to slide on the fixed table 13, and finally driving multiple pressure maintaining fixture assemblies 3 to move along the guide groove 24.

[0069] Specifically, Figure 7-Figure 9 As shown, each pressure-maintaining jig assembly 3 includes a convex jig 15 and a concave jig 16, the bottom of the convex jig 15 is fixedly connected to the top of a second permanent magnet 39, the side of the convex jig 15 is rotatably connected to an opening and closing shaft 19, the concave jig 16 is fixedly connected to the opening and closing shaft 19, a transmission shaft 20 is arranged on the side of the convex jig 15 away from the closing shaft 19, the transmission shaft 20 is transmission-connected to the opening and closing shaft 19, an opening and closing gear 21 is arranged at the end of each transmission shaft 20, the opening and closing gear 21 is used to control the expansion and closing of the convex jig 15 and the concave jig 16, a mounting groove is provided on the top of each convex jig 15 and the concave jig 16, and a negative pressure adsorption hole is provided on the top surface of each convex jig 15 and the concave jig 16.

[0070] Specifically, Figure 6-Figure 7 as well as Figure 10-11 As shown, two opening and closing rack groups are arranged on the table top of the workbench 1, each opening and closing rack group includes an upper opening and closing rack 32 and a lower opening and closing rack 33, and each opening and closing gear 21 cooperates with the upper opening and closing rack 32 and the lower opening and closing rack 33 structure.

[0071] In the present invention, the curved glass is placed on the concave jig 16 by a worker or a robotic arm, and the curved liquid crystal panel is placed on the convex jig 15. Then the stepping motor 12 transports the pressure-maintaining jig assembly 3, and during the transportation process, the opening and closing gear 21 will contact the upper opening and closing rack 32. At this time, as the circular rotating table 23 continues to rotate, the convex jig 15 and the concave jig 16 will automatically close, thereby pre-bonding the curved glass and the curved liquid crystal panel. No manual alignment is required, and the bonding accuracy is higher.

[0072] Specifically, Fig. 9 As shown, two automatic adsorption components are arranged inside each convex fixture 15, and each automatic adsorption component includes an exhaust pipe 42, a sealing piston 44, an exhaust shaft 40, an acceleration shaft 28 and an exhaust gear 41. The exhaust pipe 42 is arranged inside the convex fixture 15, and the sealing piston 44 is slidably matched with the exhaust pipe 42 in the vertical direction. The exhaust shaft 40 is rotatably connected in the convex fixture 15, and the exhaust shaft 40 and the sealing piston 44 are connected by a crank connecting rod 45. The acceleration shaft 28 is arranged above the exhaust shaft 40, and the exhaust shaft 40 and the acceleration shaft 28 are connected by an acceleration gear set 43. The exhaust gear 41 is fixedly connected to the acceleration shaft 28;

[0073] The top of one of the exhaust pipes 42 is connected to the negative pressure adsorption hole on the convex fixture 15 through the first air inlet pipe 58, and the air outlet end of the exhaust pipe 42 is connected to the outside air through the first air outlet pipe 51. The air inlet end of the other exhaust pipe 42 is connected to the negative pressure adsorption hole on the concave fixture 16 through the air inlet pipe, and the air outlet end of the exhaust pipe 42 is connected to the outside air through the second air outlet pipe 29. One-way valves are provided in the first air inlet pipe 58, the second air inlet pipe 22, the first air outlet pipe 51 and the second air outlet pipe 29. The two exhaust gears 41 are staggered on the fixed platen 13. The top of the fixed platen 13 is provided with a second exhaust rack 30 and two first exhaust racks 31. Each exhaust gear 41 close to the inner side of the fixed platen 13 cooperates with the first exhaust rack 31 structure, and each exhaust gear 41 close to the outer side of the fixed platen 13 cooperates with the two first exhaust racks 31 structure.

[0074] In the present invention, when the exhaust gear 41 contacts the corresponding first exhaust rack 31, the exhaust gear 41 will be driven, and then the exhaust shaft 40 can be driven to rotate at high speed through the acceleration gear set 43, so that the sealing piston 44 can reciprocate in the exhaust pipe 42, and the negative pressure adsorption holes opened on the corresponding convex fixture 15 or concave fixture 16 can be exhausted, and then the positions of the curved glass and the curved liquid crystal panel can be switched, so as to facilitate rolling and pressure-maintaining lamination of the curved screen;

[0075] Therefore, when the staff or the robot arm places the curved glass on the concave jig 16 and the curved liquid crystal panel on the convex jig 15, and then the stepper motor 12 transports the pressure-maintaining jig assembly 3, the two vacuum gears 41 will contact the corresponding first vacuum rack 31, so that the curved glass and the curved liquid crystal panel can be adsorbed at the same time. When the convex jig 15 and the concave jig 16 are automatically closed and the curved glass and the curved liquid crystal panel are pre-laminated, as shown in FIG. Fig.11 As shown, the vacuum gear 41 near the outer side of the fixed platen 13 will be disengaged from the corresponding first vacuum rack 31. At this time, the convex jig 15 no longer provides negative pressure, while the vacuum gear 41 near the inner side of the fixed platen 13 still maintains a transmission connection with the first vacuum rack 31. At this time, the concave jig 16 will still adsorb the bonded curved glass and the curved liquid crystal panel, accompanied by the contact between the opening and closing gear 21 and the lower opening and closing rack 33. At this time, as the circular rotating table 23 continues to rotate, the convex jig 15 and the concave jig 16 will automatically unfold, and adsorb the bonded curved glass and the curved liquid crystal panel onto the unfolded concave jig 16.

[0076] Specifically, Figure 12-14 ,as well as Figure 15-16 As shown, the intermittent opening and closing assembly includes a connecting spindle 25, two cams 56, two sliding seats 55 and two sets of parallelogram connecting rods 54. The connecting spindle 25 is rotatably connected to the top outer wall of the linear channel 8. The two cams 56 are sleeved on the connecting spindle 25 at intervals, and the two cams 56 are symmetrically arranged. The two sliding seats 55 are respectively located on one side of a cam 56. Each sliding seat 55 is slidably connected to an L-shaped lifting block 57. The two sets of parallelogram connecting rods 54 are respectively located on one side of a sliding seat 55. The bottom of each set of parallelogram links 54 is hinged to the straight channel 8, the top of each set of parallelogram links 54 is hinged to two first sealing plates 9 and two second sealing plates 10 respectively, each cam 56 corresponds to an L-shaped lifting block 57, each L-shaped lifting block 57 also corresponds to a set of parallelogram links 54, one end of each L-shaped lifting block 57 is slidably matched with the outer surface of the corresponding cam 56, and the other end of each L-shaped lifting block 57 is movably hinged to the middle node of the corresponding parallelogram link 54.

[0077] In the present invention, Figure 15-16 As shown, the stepper motor 12 drives the multiple pressure-maintaining fixture assemblies 3 to move along the guide slot 24, and can also drive the connecting spindle 25 to rotate synchronously. The connecting spindle 25 will drive the two symmetrically arranged cams 56 to rotate. When the cams 56 rotate, they will intermittently lift the L-shaped lifting block 57, and the L-shaped lifting block 57 will drive the two first sealing plates 9 and the two second sealing plates 10 to open and close alternately through the corresponding parallelogram connecting rods 54. Specifically, when the convex fixture 15 carries the bonded curved glass and the curved liquid crystal panel close to the second sealing plate 10, When the convex jig 15 completely enters the linear channel 8, the two second sealing plates 10 will be quickly closed, and then the two first sealing plates 9 will be opened. The convex jig 15 enters under the pressing and bonding component, waiting for pressure-holding bonding. The curved glass and curved liquid crystal panel that have been pressure-held and bonded will be moved out of the linear channel 8 from the other first sealing plate 9. During the entire pressure-holding and bonding process, the linear channel 8 is in a closed state, and there is no need to repeatedly evacuate the linear channel 8, thereby improving the bonding efficiency of the curved screen.

[0078] Specifically, Figure 6 As shown, a linkage shaft 27 is fixedly connected to the output shaft of the stepping motor, a conical gear disc 26 is rotatably connected to the top of the fixed platen 13, and the linkage shaft 27 is transmission-connected to the connecting spindle 25 via the conical gear disc 26.

[0079] Specifically, Figure 12-14 As shown, the pressing and fitting components include an annular guide rail 46, a conveyor belt 50, a synchronous belt 53 and two rotating rods 52. The annular guide rail 46 is arranged on the inner wall of the linear channel 8. The two rotating rods 52 are rotatably connected to the inner wall of the linear guide rail. The conveyor belt 50 is transmission-connected to the two rotating rods 52. Two connecting sliders 47 are symmetrically arranged on the annular guide rail 46. One end of each connecting slider 47 is hinged to the conveyor belt 50. The other end of each connecting slider 47 is provided with a group of dampers 48. Each group of dampers 48 is provided with a plurality of dampers, and the plurality of dampers 48 are distributed in a matrix manner. One end of each group of dampers 48 is hinged to the connecting slider 47. The end of each group of dampers 48 away from the connecting slider 47 is provided with a flattening mold 49. The flattening mold 49 cooperates with the top structure of multiple convex jigs 15.

[0080] In the present invention, while the stepper motor 12 drives multiple pressure-holding jig assemblies 3 to move along the guide groove 24, it can also drive two connecting sliders 47 to move along the annular guide rail 46, and then drive two flattening molds 49 to move, and the displacement speed of the flattening mold 49 is consistent with the displacement speed of the pressure-holding jig assembly 3 on the straight section of the guide groove 24. The flattening mold 49 can continuously press the curved liquid crystal panel and the curved glass with a constant pressure, thereby achieving pressure-holding bonding of the curved liquid crystal panel and the curved glass. The difference from the prior art is that the flattening mold 49 can move synchronously with the curved liquid crystal panel and the curved glass, and the pressure-holding bonding process can be carried out continuously without interruption, and the gravity of the bonding can be controlled by adjusting the damping of the damper 48.

[0081] Example 2

[0082] See also Figure 13-Figure 14 , which is different from Example 1, is provided with a rolling assembly 4 above the workbench 1, and the rolling assembly 4 includes a fixed frame 5, a cylinder 35, a pushing frame 34 and a flexible roller 36. The fixed frame 5 is provided above the workbench 1, and the cylinder 35 is vertically downwardly provided in the fixed frame 5. The pushing frame 34 is fixedly connected to the output end of the cylinder 35, and the flexible roller 36 is rotatably connected to the bottom of the pushing frame 34, and the flexible roller 36 is located between the two opening and closing rack groups.

[0083] In the present invention, the cylinder 35 drives the flexible roller 36 to descend to a certain height. When the concave fixture 16 carries the bonded curved glass and curved liquid crystal panel through, the curved liquid crystal panel and the curved glass can be rolled to remove bubbles in advance, and in particular, the curved surface positions of the curved liquid crystal panel and the curved glass can be rolled and bonded to avoid warping.

[0084] It is worth noting that: the cylinder 35 drives the flexible roller 36 to descend to a certain height. When the concave fixture 16 carries the bonded curved glass and curved liquid crystal panel through, it can roll the curved liquid crystal panel and the curved glass to remove bubbles in advance, and in particular, it can roll and bond the curved surface of the curved liquid crystal panel and the curved glass to avoid warping.

[0085] The present invention also discloses a gravity control system, comprising the following steps:

[0086] S1: The stepper motor 12 drives the multiple pressure-maintaining fixture assemblies 3 to move along the guide slide 24. At the same time, the stepper motor 12 can also drive the two connecting sliders 47 to move along the annular guide rail 46;

[0087] S2: The connecting slider moves along the annular guide rail 46 to drive the two flattening dies 49 to move, and the displacement speed of the flattening dies 49 is consistent with the displacement speed of the pressure-maintaining fixture assembly 3 on the straight section of the guide slot 24;

[0088] S3: the flattening mold 49 continuously presses the curved liquid crystal panel and the curved glass with a constant pressure, and the curved liquid crystal panel and the curved glass are pressure-bonded;

[0089] S4: The gravity of the pressure-maintaining fit is controlled by adjusting the damping of the damper 48 .

[0090] The working principle of the present invention is as follows: the present invention divides the linear channel 8 into three independent cavities, so that no matter whether the pressure-maintaining jig assembly 3 to be bonded enters the linear channel 8 or the pressure-maintaining jig assembly 3 after bonding is moved out of the linear channel 8, the linear channel 8 can maintain a good vacuum environment, and there is no need to repeatedly evacuate the linear channel 8, thereby improving the bonding efficiency of the curved screen;

[0091] Specifically, the curved glass is placed on the concave fixture 16 by a worker or a robotic arm, and the curved liquid crystal panel is placed on the convex fixture 15. When the stepper motor 12 drives the circular rotating table 23 to rotate, the first permanent magnet 38 can be moved along the guide slot 24, thereby driving the second permanent magnet 39 that attracts the first permanent magnet 38 to slide on the fixed platen 13, and finally driving the multiple pressure-maintaining fixture assemblies 3 to move along the guide slot 24;

[0092] As the stepper motor 12 transports the pressure-maintaining jig assembly 3, and during the transportation process, the opening and closing gear 21 will contact the upper opening and closing rack 32, at this time, as the circular rotating table 23 continues to rotate, the convex jig 15 and the concave jig 16 will automatically close, thereby pre-bonding the curved glass and the curved liquid crystal panel without the need for manual alignment, and the bonding accuracy is higher.

[0093] When the exhaust gear 41 contacts the corresponding first exhaust rack 31, the exhaust gear 41 will be driven, and then the exhaust shaft 40 can be driven to rotate at high speed through the acceleration gear set 43, so that the sealing piston 44 can reciprocate in the exhaust pipe 42, and the negative pressure adsorption holes opened on the corresponding convex fixture 15 or concave fixture 16 can be exhausted, and then the positions of the curved glass and the curved liquid crystal panel can be switched, so as to facilitate rolling and pressure-maintaining lamination of the curved screen;

[0094] When the convex fixture 15 and the concave fixture 16 are automatically closed and the curved glass and the curved liquid crystal panel are pre-bonded, Fig.11As shown, the vacuum gear 41 near the outer side of the fixed platen 13 will be disengaged from the corresponding first vacuum rack 31. At this time, the convex jig 15 no longer provides negative pressure, while the vacuum gear 41 near the inner side of the fixed platen 13 still maintains a transmission connection with the first vacuum rack 31. At this time, the concave jig 16 will still adsorb the bonded curved glass and the curved liquid crystal panel, accompanied by the contact between the opening and closing gear 21 and the lower opening and closing rack 33. At this time, as the circular rotating table 23 continues to rotate, the convex jig 15 and the concave jig 16 will automatically unfold, and adsorb the bonded curved glass and the curved liquid crystal panel onto the unfolded concave jig 16.

[0095] Afterwards, the cylinder 35 drives the flexible roller 36 to descend to a certain height. When the concave fixture 16 carries the bonded curved glass and curved liquid crystal panel through, it can roll the curved liquid crystal panel and the curved glass to remove bubbles in advance, and especially can roll and bond the curved surface of the curved liquid crystal panel and the curved glass to avoid warping.

[0096] Next, the stepper motor 12 drives the multiple pressure-maintaining fixture assemblies 3 to move along the guide slot 24, and can also drive the connecting spindle 25 to rotate synchronously. The connecting spindle 25 will drive the two symmetrically arranged cams 56 to rotate. When the cams 56 rotate, they will intermittently lift the L-shaped lifting block 57, and the L-shaped lifting block 57 will drive the two first sealing plates 9 and the two second sealing plates 10 to open and close alternately through the corresponding parallelogram connecting rods 54. Specifically, when the convex fixture 15 carries the bonded curved glass and the curved liquid crystal panel close to the second sealing plate 10, When the convex jig 15 completely enters the linear channel 8, the two second sealing plates 10 will be quickly closed, and then the two first sealing plates 9 will be opened. The convex jig 15 enters under the pressing and bonding component, waiting for pressure-holding bonding. The curved glass and curved liquid crystal panel that have been pressure-held and bonded will be moved out of the linear channel 8 from the other first sealing plate 9. During the entire pressure-holding and bonding process, the linear channel 8 is in a closed state, and there is no need to repeatedly evacuate the linear channel 8, thereby improving the bonding efficiency of the curved screen.

[0097] While the stepper motor 12 drives multiple pressure-holding jig assemblies 3 to move along the guide groove 24, it can also drive the two connecting sliders 47 to move along the annular guide rail 46, and then drive the two flattening molds 49 to move, and the displacement speed of the flattening mold 49 is consistent with the displacement speed of the pressure-holding jig assembly 3 on the straight section of the guide groove 24. The flattening mold 49 can continuously press the curved liquid crystal panel and the curved glass with a constant pressure, thereby achieving pressure-holding bonding of the curved liquid crystal panel and the curved glass. The difference from the prior art is that the flattening mold 49 can move synchronously with the curved liquid crystal panel and the curved glass, and the pressure-holding bonding process can be carried out continuously without interruption, and the gravity of the bonding can be controlled by adjusting the damping of the damper 48.

[0098] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A pressure-maintaining fixture adapted for a gravity control system, comprising a workbench (1), characterized in that: A fixed table plate (13) is arranged on the table top of the workbench (1), and a magnetic drive component is arranged at the bottom of the fixed table plate (13). The magnetic drive component comprises a stepper motor (12), a circular rotating table (23), a guide plate (14) and a plurality of slide plates (17). The stepper motor (12) is arranged on the top of the table top of the workbench (1), and the stepper motor (12) is used to drive the circular rotating table (23) to rotate. The guide plate (14) is arranged at the bottom of the fixed table plate (13), and the plurality of slide plates (17) are arranged on the bottom of the fixed table plate (13). Uniformly distributed around the circular rotating table (23), each slide plate (17) is slidably connected to a first permanent magnet (38), a plurality of second permanent magnets (39) equal in number to and corresponding to the first permanent magnets (38) are arranged on the top of the fixed table, the guide plate (14) is used to guide the movement of the first permanent magnets (38), each of the first permanent magnets (38) is attracted to the corresponding second permanent magnet (39), and a pressure-maintaining fixture assembly (3) is arranged on the top of each of the second permanent magnets (39); A continuous pressure-maintaining component (2), the continuous pressure-maintaining component (2) comprising a linear channel (8), an intermittent opening and closing component, a pressing and fitting component, and two first sealing plates (9) and two second sealing plates (10); the linear channel (8) is fixedly connected to the top of the fixed platform (13); the two first sealing plates (9) and the two second sealing plates (10) are both slidably and sealedly connected to the linear channel (8) in the vertical direction; the two first sealing plates (9) are fixedly connected; the two second sealing plates (10) are fixedly connected; the intermittent opening and closing component is used to cross-control the opening and closing of the two first sealing plates (9) and the two second sealing plates (10); the pressing and fitting component is used to continuously maintain the pressure of the pressure-maintaining fixture component (3).

2. A pressure-maintaining fixture adapted to a gravity control system according to claim 1, characterized in that: A circular slide rail (6) is arranged on the table surface of the workbench (1), and a plurality of support rods (11) are slidably connected to the circular slide rail (6), and the top of each support rod (11) is fixedly connected to the bottom of the circular rotating table (23), and the output shaft of the stepper motor (12) is fixedly connected to the bottom center of the circular rotating table (23), and a vacuum pipe (7) is arranged at the top of the linear channel (8).

3. A pressure-maintaining fixture adapted to a gravity control system according to claim 2, characterized in that: Each of the slide plates (17) is slidably connected to a slide ring (18), and the top of each slide ring (18) is rotatably connected to a first permanent magnet (38) via a rotating shaft (37). A guide groove (24) is provided on the guide plate (14), and the guide groove (24) is composed of a circular arc segment and a straight line segment. Each of the slide rings (18) is slidably matched with the guide groove (24).

4. A pressure-maintaining fixture adapted to a gravity control system according to claim 3, characterized in that: Each of the pressure-maintaining jig components (3) comprises a convex jig (15) and a concave jig (16); the bottom of the convex jig (15) is fixedly connected to the top of a second permanent magnet (39); the side of the convex jig (15) is rotatably connected to an opening and closing shaft (19); the concave jig (16) is fixedly connected to the opening and closing shaft (19); a transmission shaft (20) is arranged on the side of the convex jig (15) away from the opening and closing shaft (19); the transmission shaft (20) is transmission-connected to the opening and closing shaft (19); an opening and closing gear (21) is arranged at the end of each transmission shaft (20); the opening and closing gear (21) is used to control the expansion and closing of the convex jig (15) and the concave jig (16).

5. A pressure-maintaining fixture adapted to a gravity control system according to claim 4, characterized in that: A mounting groove is provided on the top of each convex jig (15) and each concave jig (16), and a negative pressure adsorption hole is provided on the top surface of each convex jig (15) and each concave jig (16).

6. A gravity control system and its adapted pressure-maintaining fixture according to claim 5, characterized in that: Two opening and closing rack groups are arranged on the table top of the workbench (1), each opening and closing rack group comprises an upper opening and closing rack (32) and a lower opening and closing rack (33), and each opening and closing gear (21) cooperates with the upper opening and closing rack (32) and the lower opening and closing rack (33) structure.

7. A pressure-maintaining fixture adapted for a gravity control system according to claim 4, characterized in that: Each of the convex jigs (15) is provided with two automatic adsorption components, each of which includes an exhaust pipe (42), a sealing piston (44), an exhaust shaft (40), an acceleration shaft (28) and an exhaust gear (41). The exhaust pipe (42) is provided inside the convex jig (15), the sealing piston (44) is slidably matched with the exhaust pipe (42) in the vertical direction, the exhaust shaft (40) is rotatably connected in the convex jig (15), the exhaust shaft (40) and the sealing piston (44) are connected by a crank connecting rod (45), the acceleration shaft (28) is provided above the exhaust shaft (40), the exhaust shaft (40) and the acceleration shaft (28) are connected by an acceleration gear set (43), and the exhaust gear (41) is fixedly connected to the acceleration shaft (28).

8. A pressure-maintaining fixture adapted for a gravity control system according to claim 7, characterized in that: The top of one of the air extraction pipes (42) is connected to the negative pressure adsorption hole on the convex fixture (15) through a first air inlet pipe (58), and the air outlet end of the air extraction pipe (42) is connected to the outside air through a first air outlet pipe (51). The air inlet end of the other air extraction pipe (42) is connected to the negative pressure adsorption hole on the concave fixture (16) through a second air inlet pipe (22), and the air outlet end of the air extraction pipe (42) is connected to the outside air through a second air outlet pipe (29). One-way valves are arranged in the first air inlet pipe (58), the second air inlet pipe (22), the first air outlet pipe (51) and the second air outlet pipe (29), and the two air extraction gears (41) are arranged alternately on the fixed platen (13).

9. A pressure-maintaining fixture adapted to a gravity control system according to claim 3, characterized in that: A second air extraction rack (30) and two first air extraction racks (31) are arranged on the top of the fixed platform (13); each air extraction gear (41) close to the inner side of the fixed platform (13) cooperates with the first air extraction rack (31) structure, and each air extraction gear (41) close to the outer side of the fixed platform (13) cooperates with the two first air extraction racks (31) structures.

10. A pressure-maintaining fixture adapted to a gravity control system according to claim 9, characterized in that: A rolling assembly (4) is arranged above the workbench (1), and the rolling assembly (4) comprises a fixed frame (5), a cylinder (35), a pushing frame (34) and a flexible roller (36). The fixed frame (5) is arranged above the workbench (1), the cylinder (35) is arranged vertically downward in the fixed frame (5), the pushing frame (34) is fixedly connected to the output end of the cylinder (35), the flexible roller (36) is rotatably connected to the bottom of the pushing frame (34), and the flexible roller (36) is located between two opening and closing rack groups.

11. A pressure-maintaining fixture adapted for a gravity control system according to claim 9, characterized in that: The intermittent opening and closing component comprises a connecting main shaft (25), two cams (56), two sliding seats (55) and two groups of parallelogram connecting rods (54). The connecting main shaft (25) is rotatably connected to the top outer wall of the linear channel (8). The two cams (56) are sleeved on the connecting main shaft (25) at intervals, and the two cams (56) are arranged symmetrically on the left and right. The two sliding seats (55) are respectively located on one side of a cam (56). Each sliding seat (55) is slidably connected to an L-shaped lifting block (57). The two groups of parallelogram connecting rods (54) are respectively located on one sliding seat. On one side of the seat (55), the bottom of each group of parallelogram links (54) is hinged to the straight channel (8), the top of each group of parallelogram links (54) is hinged to two first sealing plates (9) and two second sealing plates (10), each cam (56) corresponds to an L-shaped lifting block (57), and each L-shaped lifting block (57) also corresponds to a group of parallelogram links (54). One end of each L-shaped lifting block (57) is slidably matched with the outer surface of the corresponding cam (56), and the other end of each L-shaped lifting block (57) is movably hinged to the middle node of the corresponding parallelogram link (54).

12. A pressure-maintaining fixture adapted to a gravity control system according to claim 11, characterized in that: A linkage shaft (27) is fixedly connected to the output shaft of the stepping motor, a conical toothed disc (26) is rotatably connected to the top of the fixed platform (13), and the linkage shaft (27) is transmission-connected to the connecting main shaft (25) via the conical toothed disc (26).

13. A pressure-maintaining fixture adapted for a gravity control system according to claim 9, characterized in that: The pressing and fitting component comprises an annular guide rail (46), a conveyor belt (50), a synchronous belt (53) and two rotating rods (52); the annular guide rail (46) is arranged on the inner wall of the linear channel (8); the two rotating rods (52) are rotatably connected to the inner wall of the linear guide rail; the conveyor belt (50) is transmission-connected to the two rotating rods (52); two connecting sliders (47) are symmetrically arranged on the annular guide rail (46); one end of each connecting slider (47) is connected to the inner wall of the linear channel (8); The conveyor belt (50) is hinged, and a group of dampers (48) are arranged at the other end of each connecting slider (47), and each group of dampers (48) is provided with a plurality of dampers, and the plurality of dampers (48) are distributed in a matrix manner. One end of each group of dampers (48) is hinged to the connecting slider (47), and a flattening mold (49) is arranged at one end of each group of dampers (48) away from the connecting slider (47), and the flattening mold (49) cooperates with the top structure of a plurality of convex jigs (15).

14. A gravity control system, characterized in that: The gravity control system is based on a pressure-maintaining fixture adapted to the gravity control system as described in any one of claims 1 to 13, and includes the following steps: S1: The stepper motor (12) drives the plurality of pressure-maintaining fixture assemblies (3) to move along the guide slide groove (24). At the same time, the stepper motor (12) can also drive the two connecting slide blocks (47) to move along the annular guide rail (46); S2: The connecting slide block moves along the annular guide rail (46), driving the two flattening dies (49) to move, and the displacement speed of the flattening dies (49) is consistent with the displacement speed of the pressure-maintaining fixture assembly (3) on the straight section of the guide slot (24); S3: the flattening mold (49) continuously presses the curved liquid crystal panel and the curved glass at a constant pressure, and the curved liquid crystal panel and the curved glass are pressure-maintained and laminated; S4: The gravity of the pressure-maintaining fit is controlled by adjusting the damping of the damper (48).

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