A lifting and conveying device for liquid crystal panel

Abstract

The present invention discloses a lifting and conveying device for liquid crystal panels, which relates to a conveying device for liquid crystal panels, including a lifting mechanism and an air-floating conveying platform arranged on the lifting structure, wherein the lifting mechanism includes a supporting frame assembly, a servo drive assembly, a first frame assembly, a second frame assembly and a connecting crossbar, the servo drive assembly is arranged at the upper end of the supporting frame assembly, the first frame assembly is arranged at the upper end of one side of the supporting frame assembly, the second frame assembly is arranged at the upper end of the other side of the supporting frame assembly, the connecting crossbar connects the first frame assembly and the second frame assembly, the air-floating conveying platform is arranged on the upper side of the servo drive assembly, and the two sides of the air-floating conveying platform are connected to the first frame assembly and the second frame assembly, and the servo drive assembly is used to drive the air-floating conveying platform to move vertically up and down. The device has a simple structure, is easy to implement, and can realize the mutual connection of process equipment with different height differences during the circulation of liquid crystal glass.

Description

Technical Field

[0001] The invention relates to a conveying device for a liquid crystal panel, and in particular to a lifting and conveying device for a liquid crystal panel. Background Art

[0002] Currently in the LCD panel industry, LCD panels need to be transferred between different equipment for different process treatments. At the same time, there are height differences between different process treatment equipment, and special devices need to be set up to realize the transfer and transportation of LCD glass between equipment at different heights. On the other hand, the traditional LCD glass is mainly transferred in the equipment by multi-point roller conveying, and the conveying roller is in direct contact with the LCD glass.

[0003] At present, the traditional liquid crystal glass is transferred and transported between different equipment mainly by anti-static roller conveying. In this transportation method, there are multiple points of contact between the conveying roller and the liquid crystal glass. During the long process of circulation, there will be scratches and marks on the surface of the liquid crystal glass, which cannot meet the requirements of the subsequent production process. In addition, during the circulation of liquid crystal glass in different process equipment, there are problems such as low efficiency and low degree of automation. Summary of the invention

[0004] The object of the present invention is to provide a lifting and conveying device for liquid crystal panels to solve the above-mentioned technical problems.

[0005] The technical solution adopted by the present invention is as follows:

[0006] A lifting and conveying device for a liquid crystal panel comprises a lifting mechanism and an air-floating conveying platform arranged on the lifting structure, wherein the lifting mechanism comprises a supporting base frame assembly, a servo drive assembly, a first vertical frame assembly, a second vertical frame assembly and a connecting cross bar, the servo drive assembly is arranged at the upper end of the supporting base frame assembly, the first vertical frame assembly is arranged at the upper end of one side of the supporting base frame assembly, the second vertical frame assembly is arranged at the upper end of the other side of the supporting base frame assembly, the connecting cross bar connects the first vertical frame assembly and the second vertical frame assembly, the air-floating conveying platform is arranged on the upper side of the servo drive assembly, and the two sides of the air-floating conveying platform are connected to the first vertical frame assembly and the second vertical frame assembly, and the servo drive assembly is used to drive the air-floating conveying platform to move vertically up and down.

[0007] Preferably, the supporting frame assembly includes a frame and legs, the frame is a square tube welded frame, a plurality of legs are evenly arranged at the lower end of the frame, the servo drive assembly is arranged at the upper end of the frame, the first vertical frame assembly is arranged at the upper end of one side of the frame, and the second vertical frame assembly is arranged at the upper end of the other side of the frame.

[0008] As a further preference, the servo drive assembly includes a servo drive mechanism, a dual-axis output steering gear, a first rotating shaft, a second rotating shaft, a first right-angle steering gear and a second right-angle steering gear, wherein the servo drive mechanism is connected to one end of the dual-axis output steering gear, the first right-angle steering gear is connected to one side of the dual-axis output steering gear through the first rotating shaft, and the second right-angle steering gear is connected to the other side of the dual-axis output steering gear through the second rotating shaft.

[0009] As a further preference, the servo drive assembly also includes a plurality of first couplings and two second couplings, wherein the servo drive mechanism and one end of the dual-axis output steering gear, between the first right-angle steering gear and the first rotating shaft, between the first rotating shaft and one side of the dual-axis output steering gear, between the second right-angle steering gear and the second rotating shaft, and between the second rotating shaft and the other side of the dual-axis output steering gear are respectively connected through a first coupling, and the upper end of the first right-angle steering gear and the upper end of the second right-angle steering gear are each provided with a second coupling.

[0010] As a further preference, the first stand assembly and the second stand assembly both include:

[0011] A stand, the lower end of which is fixedly connected to the upper end of the base frame;

[0012] Two linear slide rail assemblies, the two linear slide rail assemblies are arranged on both sides of the stand;

[0013] A support seat, both ends of which are fixedly connected to the sliders in the two linear slide rail assemblies;

[0014] A ball screw assembly is arranged in the middle of the stand, a nut in the ball screw assembly is fixedly connected to the support seat, and the lower end of each ball screw in the ball screw assembly is respectively connected to one of the second couplings.

[0015] As a further preference, the air floating conveying platform comprises:

[0016] A support frame, two sides of which are connected to the two support seats;

[0017] A roller drive system, wherein each side of the support frame is provided with a roller drive system;

[0018] A double-sided transition gear assembly, wherein the double-sided transition gear assembly is drivingly connected to the two roller drive systems;

[0019] A gear drive mechanism, the gear drive mechanism is arranged at the lower end of the support frame, and the gear drive mechanism is drivingly connected to the transition gear of the double-sided transition gear assembly;

[0020] An air floating platform assembly is provided at the upper end of the support frame, and the air floating platform assembly is located between the two roller drive systems.

[0021] As a further preference, each of the roller drive systems comprises:

[0022] A driven wheel assembly, the driven wheel assembly is arranged at the upper end of the support frame, and the driven wheel assembly is transmission-connected to the double-sided transition gear assembly;

[0023] A roller assembly, wherein a plurality of the roller assemblies are disposed on one side of the driven wheel assembly, and the plurality of the roller assemblies are evenly arranged along the length direction of the driven wheel assembly, and each of the roller assemblies is respectively connected to the driven wheel assembly in a transmission manner;

[0024] A pressing wheel assembly, wherein one side of each roller assembly is provided with a pressing wheel assembly;

[0025] A guide roller is provided on the other side of each roller assembly.

[0026] As a further preference, each of the driven wheel assemblies comprises:

[0027] A first rotating shaft, wherein the first rotating shaft is fixed to the upper end of the supporting frame through a first bearing seat;

[0028] A driven gear, the first rotating shaft is provided with the driven gear, and the driven gear is transmission-connected with the double-sided transition gear assembly;

[0029] The first magnetic wheel, a plurality of the first magnetic wheels are arranged on the first rotating shaft, and each of the first magnetic wheels is respectively connected to a roller assembly in a transmission manner.

[0030] As a further preference, each of the roller assemblies comprises:

[0031] a second rotating shaft, the second rotating shaft being fixed to the upper end of the supporting frame via a second bearing seat;

[0032] A second magnetic wheel, wherein one end of the second rotating shaft is provided with the second magnetic wheel, and the second magnetic wheel is magnetically transmitted with the first magnetic wheel;

[0033] A roller is provided at the other end of the second rotating shaft.

[0034] As a further preference, the air floating platform assembly includes a plurality of air floating platforms, and the plurality of air floating platforms are arranged side by side between the two roller drive systems;

[0035] Each of the air flotation platforms comprises:

[0036] An air flotation strip, wherein a cavity structure is provided inside the air flotation strip, and a plurality of air holes are provided on the upper surface of the air flotation strip, and each of the air holes is respectively connected to the cavity structure;

[0037] Sealing end caps, two of which are arranged at the two ends of the air flotation strip, and the two sealing end caps are sealed and connected to the two ends of the air flotation strip;

[0038] Sealing strip, the two sealing end covers are sealed and connected to the two ends of the air flotation strip through the two sealing strips;

[0039] An air intake pipeline is provided at the lower end of the air flotation strip, and the air intake pipeline is communicated with the cavity structure.

[0040] The above technical solution has the following advantages or beneficial effects:

[0041] (1) The present invention has a simple structure and is easy to implement, and can realize the connection between process equipment with different height differences during the circulation of liquid crystal glass;

[0042] (2) In the present invention, the air floating platform is used for transportation, which can solve the problems of scratches and stains that are easy to occur in the circulation process of traditional liquid crystal glass. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 It is a three-dimensional diagram of a lifting and conveying device for a liquid crystal panel in the present invention;

[0044] Figure 2 is a three-dimensional diagram of the lifting mechanism in the present invention;

[0045] Figure 3 It is a structural schematic diagram of the servo drive assembly in the present invention;

[0046] Figure 4 is a three-dimensional diagram of the first stand assembly of the present invention;

[0047] Figure 5 It is a three-dimensional diagram of the air floating conveying platform of the present invention;

[0048] Figure 6 yes Figure 5 The enlarged view of point A in the middle;

[0049] Figure 7 is a three-dimensional diagram of the air flotation platform of the present invention;

[0050] Figure 8 This is a diagram showing the use status of the lifting and conveying device for liquid crystal panels in the present invention.

[0051] In the figure: 1. lifting mechanism; 11. supporting frame assembly; 111. frame; 112. supporting feet; 12. servo drive assembly; 121. servo drive mechanism; 122. dual-axis output steering gear; 123. first rotating shaft; 124. second rotating shaft; 125. first right-angle steering gear; 126. second right-angle steering gear; 127. first coupling; 128. second coupling; 13. first vertical frame assembly; 131 vertical frame; 132. linear slide rail assembly; 133. supporting seat; 134. ball screw assembly; 135. ball screw; 14. second vertical frame assembly; 15. connecting cross bar; 2. air floating conveying platform; 21. supporting frame; 22. roller drive system; 221. Driven wheel assembly; 2211 first rotating shaft; 2212, first bearing seat; 2213, driven gear; 2214, first magnetic wheel; 222, roller assembly; 2221, second rotating shaft; 2222, second bearing seat; 2223, second magnetic wheel; 2224, roller; 223, pressure wheel assembly; 224, guide roller; 23, double-sided transition gear assembly; 231, transition gear; 24, gear drive mechanism; 241, asynchronous motor; 242, driving gear; 25, air flotation platform assembly; 251, air flotation platform; 2511, air flotation strip; 2512, air hole; 2513, sealing end cover; 2514, sealing strip; 2515, air intake pipe; 3, LCD panel. DETAILED DESCRIPTION

[0052] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0053] Figure 1 is a three-dimensional diagram of a lifting and conveying device for a liquid crystal panel in the present invention, Figure 2 is a three-dimensional diagram of the lifting mechanism in the present invention, Figure 3 is a schematic diagram of the structure of the servo drive assembly in the present invention, Figure 4 is a three-dimensional diagram of the first stand assembly in the present invention, Figure 5 is a three-dimensional diagram of the air flotation conveying platform of the present invention, Figure 6 yes Figure 5 The enlarged view of point A in the middle. Figure 7 is a three-dimensional diagram of the air flotation platform of the present invention, Figure 8 This is a diagram of the use state of the lifting and conveying device for liquid crystal panels in the present invention. Figures 1 to 8As shown, a preferred embodiment is shown, which shows a lifting and conveying device for liquid crystal panels, including a lifting mechanism 1 and an air-floating conveying platform 2 arranged on the lifting structure 1. Among them, the lifting mechanism 1 includes a supporting frame assembly 11, a servo drive assembly 12, a first frame assembly 13, a second frame assembly 14 and a connecting cross bar 15. The servo drive assembly 12 is arranged at the upper end of the supporting frame assembly 11, the first frame assembly 13 is arranged at the upper end of one side of the supporting frame assembly 11, and the second frame assembly 14 is arranged at the upper end of the other side of the supporting frame assembly 11. The connecting cross bar 15 connects the first frame assembly 13 and the second frame assembly 14. The air-floating conveying platform 2 is arranged on the upper side of the servo drive assembly 12, and the two sides of the air-floating conveying platform 2 are connected to the first frame assembly 13 and the second frame assembly 14. The servo drive assembly 12 is used to drive the air-floating conveying platform 2 to move vertically up and down. In this embodiment, as Figure 1 As shown, the first frame assembly 13 is arranged at the upper left end of the supporting base frame assembly 11, the second frame assembly 14 is arranged at the upper right end of the supporting base frame assembly 11, the connecting cross bar 15 is used to fix the first frame assembly 13 and the second frame assembly 14, the left side of the air-floating conveying platform 2 is connected to the first frame assembly 13, and the right side of the air-floating conveying platform 2 is connected to the second frame assembly 14. When in use, the air-floating conveying platform 2 is driven by the servo drive assembly 12 to move up and down between the first frame assembly 13 and the second frame assembly 14.

[0054] Further, as a preferred embodiment, the supporting frame assembly 11 includes a frame 111 and legs 112. The frame 111 is a square tube welded frame, a plurality of legs 112 are evenly arranged at the lower end of the frame 111, the servo drive assembly 12 is arranged at the upper end of the frame 111, the first frame assembly 13 is arranged at the upper end of one side of the frame 111, and the second frame assembly 14 is arranged at the upper end of the other side of the frame 111.

[0055] Further, as a preferred embodiment, the servo drive assembly 12 includes a servo drive mechanism 121, a dual-axis output steering gear 122, a first rotating shaft 123, a second rotating shaft 124, a first right-angle steering gear 125, and a second right-angle steering gear 126. The servo drive mechanism 121 is connected to one end of the dual-axis output steering gear 122, the first right-angle steering gear 125 is connected to one side of the dual-axis output steering gear 122 through the first rotating shaft 123, and the second right-angle steering gear 126 is connected to the other side of the dual-axis output steering gear 122 through the second rotating shaft 124. Figure 3 As shown, in this embodiment, by providing the dual-axis output steering gear 122, the first right-angle steering gear 125 and the second right-angle steering gear 126, the driving power of the servo drive mechanism 121 can be transmitted vertically upward.

[0056] Further, as a preferred embodiment, the servo drive assembly 12 also includes a plurality of first couplings 127 and two second couplings 128. The servo drive mechanism 121 is connected to one end of the dual-axis output diverter 122, the first right-angle diverter 125 is connected to the first rotating shaft 123, the first rotating shaft 123 is connected to one side of the dual-axis output diverter 122, the second right-angle diverter 126 is connected to the second rotating shaft 124, and the second rotating shaft 124 is connected to the other side of the dual-axis output diverter 122 through a first coupling 127. The upper end of the first right-angle diverter 125 and the upper end of the second right-angle diverter 126 are each provided with a second coupling 128.

[0057] Further, as a preferred embodiment, the first stand assembly 13 and the second stand assembly 14 both include:

[0058] A stand 131 , the lower end of which is fixedly connected to the upper end of the base frame 111 .

[0059] Two linear slide rail assemblies 132 are arranged on both sides of the stand 131. The linear slide rail assembly 132 in this embodiment includes two linear guide rails and two sliders arranged on the two linear guide rails.

[0060] A support seat 133, both ends of which are fixedly connected to the sliders in the two linear slide rail assemblies 132. Both ends of the support seat 133 are fixedly connected to the corresponding sliders through second bolts.

[0061] A ball screw assembly 134 is provided in the middle of the stand 131, a nut in the ball screw assembly 134 is fixedly connected to the support seat 133, and a ball screw 135 in each ball screw assembly 134 is respectively connected to a second coupling 128. The stand 131 in this embodiment is fixedly connected to the base frame 111 by a first bolt. In this embodiment, the ball screw assembly 134 has a ball screw and a nut (not shown) provided on the ball screw 135, and the middle of the support seat 133 is connected to the driving nut on the ball screw 135. When in use, the servo drive mechanism 121 transmits the driving force to the dual-axis output steering gear 122, and the dual-axis output steering gear 122 transmits the driving force to the first right-angle steering gear 125 and the second right-angle steering gear 126. Then the first right-angle steering gear 125 and the second right-angle steering gear 126 drive the ball screw 135 to drive the support seat 133 to move up and down between the two frames 131, thereby ensuring the accuracy of the movement of the support seat 133.

[0062] Further, as a preferred embodiment, the air floating conveying platform 2 includes:

[0063] The supporting frame 21 has two sides connected to the two supporting seats 133. The supporting frame 21 is formed by splicing aluminum profiles.

[0064] Roller drive system 22 : A roller drive system 22 is disposed on each side of the support frame 21 .

[0065] The double-sided transition gear assembly 23 is in transmission connection with the two roller drive systems 22. In this embodiment, two transition gears 231 are provided at both ends of the double-sided transition gear assembly 23, and the two transition gears 231 are in transmission connection with the two roller drive systems 22. The two transition gears 231 in the double-sided transition gear assembly 23 in this example rotate synchronously.

[0066] The gear driving mechanism 24 is disposed at the lower end of the supporting frame 21 , and the gear driving mechanism 24 is drivingly connected to the transition gear 231 in the double-sided transition gear assembly 23 .

[0067] The air floating platform assembly 25 is provided at the upper end of the support frame 21, and the air floating platform assembly 25 is located between the two roller drive systems 22. Figure 5 As shown, the liquid crystal panel 3 moves on the upper side of the air floating platform assembly 25, and the roller drive system 22 is used to drive the liquid crystal panel 3 to move. When the liquid crystal panel 3 is located on the upper side of the air floating platform assembly 25, the two sides of the liquid crystal panel 3 are against the two roller drive systems 22, so that the roller drive system 22 can drive the liquid crystal panel 3. The gear drive mechanism 24 in this embodiment includes an asynchronous motor 241 and a driving gear 242. The driving gear 242 is arranged on the output shaft of the asynchronous motor 241, and the driving gear 242 is meshed with the transition gear 231 at one end of the double-sided transition gear assembly 23. When the asynchronous motor 241 drives the driving gear 242 to rotate, the driving gear 242 drives the transition gear 231 to rotate, so that the double-sided transition gear assembly 23 drives the two roller drive systems 22 to rotate synchronously, thereby ensuring the stability of the movement of the liquid crystal panel 3.

[0068] Further, as a preferred embodiment, each roller driving system 22 includes:

[0069] The driven wheel assembly 221 is arranged at the upper end of the support frame 21 , and the driven wheel assembly 221 is transmission-connected with the double-sided transition gear assembly 23 .

[0070] Roller assembly 222: A plurality of roller assemblies 222 are provided on one side of the driven wheel assembly 221, and the plurality of roller assemblies 222 are evenly arranged along the length direction of the driven wheel assembly 221, and each roller assembly 222 is respectively connected to the driven wheel assembly 221. The roller assembly 222 is used to provide power for the movement of the liquid crystal panel 3.

[0071] A pressing wheel assembly 223 is provided on one side of each roller assembly 222 .

[0072] Guide roller 224 : A guide roller 224 is disposed on the other side of each roller assembly 222 .

[0073] Further, as a preferred embodiment, each driven wheel assembly 221 includes:

[0074] The first rotating shaft 2211 is fixed to the upper end of the supporting frame 21 through a first bearing seat 2212 .

[0075] A driven gear 2213 is provided on the first rotating shaft 2211 , and the driven gear 2213 is transmission-connected to the double-sided transition gear assembly 23 .

[0076] The first magnetic wheel 2214, the first rotating shaft 2211 is further provided with a plurality of first magnetic wheels 2214, each of which is respectively connected to a roller assembly 222 by transmission. Figure 6 As shown, the driven gear 2213 is used to mesh with the transition gear 231. When the transition gear 231 rotates, the transition gear 231 drives the driven gear 2213 to rotate, the driven gear 2213 drives the first rotating shaft 2211 to rotate, and the first rotating shaft 2211 drives the first magnetic wheels 2214 to rotate, so that the first magnetic wheels 2214 drive the roller assemblies 222 to rotate synchronously.

[0077] Further, as a preferred embodiment, each roller assembly 222 includes:

[0078] The second rotating shaft 2221 is fixed to the upper end of the supporting frame 21 through a second bearing seat 2222 .

[0079] A second magnetic wheel 2223 is provided at one end of the second rotating shaft 2222 , and the second magnetic wheel 2223 and a first magnetic wheel 2214 are magnetically transmitted.

[0080] Roller 2224, the other end of the second rotating shaft 2222 is provided with a roller 2224. Figure 6As shown, the second rotating shaft 2222 is vertically arranged with the first rotating shaft 2211, the second magnetic wheel 2223 is vertically arranged with the first magnetic wheel 2214, the first magnetic wheel 2214 drives the second magnetic wheel 2223, and the second magnetic wheel 2223 drives the roller 2224 to rotate through the second rotating shaft 2221, so that the roller 2224 drives the liquid crystal panel 3 to move. In this embodiment, the liquid crystal panel 3 is located on the upper side of the roller assembly 222, and the two sides of the liquid crystal panel 3 are against the roller 2224 to form a partial support. The pressure wheel assembly 223 corresponds to the roller 2224 in the roller assembly 222. In the initial state, the pressure wheel assembly 223 and the roller 2224 are against each other. When the liquid crystal panel 3 moves on the upper side of the air floating platform assembly 25, the liquid crystal panel 3 enters between the pressure wheel assembly 223 and the roller 2224 to prevent the liquid crystal panel 3 from having too little contact force with the rollers 2224 on both sides due to the air film formed by the air floating platform assembly 25 being too high, thereby affecting the stable transmission of the liquid crystal panel 3. The width between two adjacent guide rollers 224 should be slightly larger than the width of the liquid crystal panel 3 to prevent the liquid crystal panel 3 from deviating from the center position during movement.

[0081] Further, as a preferred embodiment, the air floating platform assembly 25 includes a plurality of air floating platforms 251, and the plurality of air floating platforms 251 are arranged side by side between the two roller drive systems 22. Figure 5 As shown, each air floating platform 251 is parallel to the two roller driving systems 22 .

[0082] Each air floating platform 251 includes:

[0083] The air flotation strip 2511 has a cavity structure inside, and a plurality of air holes 2512 are provided on the upper surface of the air flotation strip 2511, each of the air holes 2512 is communicated with the cavity structure respectively.

[0084] The two sealing end covers 2513 are arranged at both ends of the air flotation strip 2511 , and the two sealing end covers 2513 are sealed and connected to both ends of the air flotation strip 2511 .

[0085] The sealing strip 2514 and the two sealing end covers 2513 are sealed and connected to the two ends of the air flotation strip 2511 through the two sealing strips 2514 .

[0086] The air intake pipeline 2515 is provided at the lower end of the air flotation strip 2511, and the air intake pipeline 2515 is connected to the cavity structure. Figure 7As shown, the air holes 2512 are strip-shaped, and a plurality of air holes 2512 are arranged along the length direction of the air floating strip 2511. In this embodiment, the air inlet pipes 2515 on the plurality of air floating strips 2511 are connected in parallel through a main air inlet pipe, and the compressed air provided by the air compressor enters the air inlet pipe 2515 through the main air inlet pipe, and enters the cavity structure in each air floating strip 2511 through the air inlet pipe 2515, and is ejected from the air holes 2512, so that a uniform and stable air film is formed between the liquid crystal panel 3 and the air floating platform assembly 25, thereby realizing the suspension of the liquid crystal panel 3.

[0087] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A lifting and conveying device for a liquid crystal panel, characterized in that: It includes a lifting mechanism and an air-floating conveying platform arranged on the lifting mechanism, wherein the lifting mechanism includes a supporting base frame assembly, a servo drive assembly, a first vertical frame assembly, a second vertical frame assembly and a connecting cross bar, the servo drive assembly is arranged at the upper end of the supporting base frame assembly, the first vertical frame assembly is arranged at the upper end of one side of the supporting base frame assembly, the second vertical frame assembly is arranged at the upper end of the other side of the supporting base frame assembly, the connecting cross bar connects the first vertical frame assembly and the second vertical frame assembly, the air-floating conveying platform is arranged on the upper side of the servo drive assembly, and the two sides of the air-floating conveying platform are connected to the first vertical frame assembly and the second vertical frame assembly, and the servo drive assembly is used to drive the air-floating conveying platform to move vertically up and down.

2. The lifting and conveying device for liquid crystal panels according to claim 1, characterized in that: The supporting base frame assembly includes a base frame and supporting legs. The base frame is a square tube welded frame. A plurality of supporting legs are evenly arranged at the lower end of the base frame. The servo drive assembly is arranged at the upper end of the base frame. The first vertical frame assembly is arranged at the upper end of one side of the base frame. The second vertical frame assembly is arranged at the upper end of the other side of the base frame.

3. The lifting and conveying device for liquid crystal panels according to claim 2, characterized in that: The servo drive assembly includes a servo drive mechanism, a dual-axis output steering gear, a first rotating shaft, a second rotating shaft, a first right-angle steering gear and a second right-angle steering gear, wherein the servo drive mechanism is connected to one end of the dual-axis output steering gear, the first right-angle steering gear is connected to one side of the dual-axis output steering gear through the first rotating shaft, and the second right-angle steering gear is connected to the other side of the dual-axis output steering gear through the second rotating shaft.

4. The lifting and conveying device for liquid crystal panels according to claim 3, characterized in that: The servo drive assembly also includes a plurality of first couplings and two second couplings, wherein the servo drive mechanism and one end of the dual-axis output steering gear, the first right-angle steering gear and the first rotating shaft, the first rotating shaft and one side of the dual-axis output steering gear, the second right-angle steering gear and the second rotating shaft, and the second rotating shaft and the other side of the dual-axis output steering gear are respectively connected through a first coupling, and the upper end of the first right-angle steering gear and the upper end of the second right-angle steering gear are each provided with a second coupling.

5. The lifting and conveying device for liquid crystal panels according to claim 4, characterized in that: The first stand assembly and the second stand assembly both include: A stand, the lower end of which is fixedly connected to the upper end of the base frame; Two linear slide rail assemblies, the two linear slide rail assemblies are arranged on both sides of the stand; A support seat, both ends of which are fixedly connected to the sliders in the two linear slide rail assemblies; A ball screw assembly is arranged in the middle of the stand, a nut in the ball screw assembly is fixedly connected to the support seat, and the lower end of each ball screw in the ball screw assembly is respectively connected to one of the second couplings.

6. The lifting and conveying device for liquid crystal panels according to claim 5, characterized in that: The air floating conveying platform comprises: A support frame, two sides of which are connected to the two support seats; A roller drive system, wherein each side of the support frame is provided with a roller drive system; A double-sided transition gear assembly, wherein the double-sided transition gear assembly is drivingly connected to the two roller drive systems; A gear drive mechanism, the gear drive mechanism is arranged at the lower end of the support frame, and the gear drive mechanism is drivingly connected to the transition gear of the double-sided transition gear assembly; An air floating platform assembly is provided at the upper end of the support frame, and the air floating platform assembly is located between the two roller drive systems.

7. The lifting and conveying device for liquid crystal panels according to claim 6, characterized in that: Each of the roller drive systems comprises: A driven wheel assembly, the driven wheel assembly is arranged at the upper end of the support frame, and the driven wheel assembly is transmission-connected to the double-sided transition gear assembly; A roller assembly, wherein a plurality of the roller assemblies are disposed on one side of the driven wheel assembly, and the plurality of the roller assemblies are evenly arranged along the length direction of the driven wheel assembly, and each of the roller assemblies is respectively connected to the driven wheel assembly in a transmission manner; A pressing wheel assembly, wherein one side of each roller assembly is provided with a pressing wheel assembly; A guide roller is provided on the other side of each roller assembly.

8. The lifting and conveying device for liquid crystal panels according to claim 7, characterized in that: Each of the driven wheel assemblies comprises: A first rotating shaft, wherein the first rotating shaft is fixed to the upper end of the supporting frame through a first bearing seat; A driven gear, the first rotating shaft is provided with the driven gear, and the driven gear is transmission-connected with the double-sided transition gear assembly; The first magnetic wheel, a plurality of the first magnetic wheels are arranged on the first rotating shaft, and each of the first magnetic wheels is respectively connected to a roller assembly in a transmission manner.

9. The lifting and conveying device for liquid crystal panels according to claim 8, characterized in that: Each of the roller assemblies comprises: a second rotating shaft, the second rotating shaft being fixed to the upper end of the supporting frame via a second bearing seat; A second magnetic wheel, wherein one end of the second rotating shaft is provided with the second magnetic wheel, and the second magnetic wheel is magnetically transmitted with the first magnetic wheel; A roller is provided at the other end of the second rotating shaft.

10. The lifting and conveying device for liquid crystal panels according to claim 6, characterized in that: The air floating platform assembly includes a plurality of air floating platforms, and the plurality of air floating platforms are arranged side by side between the two roller drive systems; Each of the air flotation platforms comprises: An air flotation strip, wherein a cavity structure is provided inside the air flotation strip, and a plurality of air holes are provided on the upper surface of the air flotation strip, and each of the air holes is respectively connected to the cavity structure; Sealing end caps, two of which are arranged at the two ends of the air flotation strip, and the two sealing end caps are sealed and connected to the two ends of the air flotation strip; Sealing strip, the two sealing end covers are sealed and connected to the two ends of the air flotation strip through the two sealing strips; An air intake pipeline is provided at the lower end of the air flotation strip, and the air intake pipeline is communicated with the cavity structure.

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