Large-size glass substrate positioning system and positioning method

Abstract

The invention relates to a large-size glass substrate positioning system and a positioning method. The high-precision positioning system comprises a controller, a mechanical alignment device and a deviation adjusting assembly. The mechanical alignment device accurately controls the initial position and the moving path of the glass substrate through the supporting assembly, the pushing assembly and the bearing column assembly. And the deviation adjusting assembly is used for finely adjusting the flatness and the parallelism of the glass substrate after coarse positioning, so that the position precision in the machining process is ensured. High-precision positioning of the glass substrate is achieved, the position precision of the glass substrate in the machining process is ensured, and the printing quality is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of glass printing, and in particular to a large-size glass substrate positioning system and positioning method. Background Art

[0002] In the processing of large-size glass substrates, especially in the printing process of glass panels, the glass substrate needs to be accurately positioned to ensure that the printed pattern is accurately aligned with the pattern on the glass substrate.

[0003] However, existing positioning systems usually have problems such as insufficient accuracy and difficulty in adjustment. These problems not only affect the printing quality, but may also lead to a decrease in product performance and appearance.

[0004] Therefore, there is an urgent need for a large-size glass substrate positioning system and a positioning method thereof that can solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide a large-size glass substrate positioning system and positioning method, which can solve the problems of insufficient positioning accuracy and difficulty in adjusting the large-size glass substrate in the prior art.

[0006] In a first aspect, the present invention provides a large-size glass substrate positioning system, including a controller, a mechanical alignment device and a deviation adjustment component;

[0007] The controller is connected to the mechanical alignment device and the deviation adjustment component by signal;

[0008] The mechanical alignment device includes a support assembly, a material pushing assembly, a bearing column assembly, a first sensor, a second sensor and an air floating platform assembly;

[0009] The air floating platform assembly is used to suspend the glass substrate;

[0010] The support assembly is arranged below the air floating platform assembly and can be lifted and lowered to pass through the activity area of ​​the air floating platform assembly;

[0011] The pushing assembly is arranged at one end of the air floating platform, and is used to push the glass substrate to move;

[0012] The bearing column assembly is arranged through the air floating platform assembly, and is used to bear the glass substrate after the supporting assembly descends;

[0013] The first sensor is disposed on the air floating platform assembly and is used to detect an initial position of the glass substrate;

[0014] The second sensor is disposed on the air floating platform assembly and is used to detect the edge position of the glass substrate;

[0015] The deviation adjustment component is arranged at one side of the mechanical alignment device, and is used for adjusting the flatness and parallelism of the glass substrate after the rough positioning.

[0016] In an optional embodiment, the deflection adjustment assembly includes a mounting base plate and a deflection adjustment subassembly;

[0017] The deflection adjustment subassembly includes a cross roller guide rail, a guide rail mounting plate and a clamp;

[0018] The cross roller guide rail is arranged on the guide rail mounting plate, and the guide rail mounting plate is arranged on the mounting bottom plate;

[0019] The clamp is arranged at the end of the cross roller guide rail;

[0020] The cross roller guide has a preset inclination angle.

[0021] In an optional embodiment, the deviation adjustment assembly further includes an intermediate rotating assembly;

[0022] There are two deflection adjustment sub-assemblies, and the intermediate rotating assembly is arranged on the mounting base plate and located between the two deflection adjustment sub-assemblies.

[0023] In an optional embodiment, the deviation adjustment assembly further includes a magnetic grid assembly;

[0024] The magnetic grid assembly is arranged on the side of the cross roller guide rail, and is used to detect the displacement of the deflection adjustment subassembly and feed back the displacement signal to the controller.

[0025] In an optional embodiment, the clamp is a negative pressure adsorption structure.

[0026] In an optional embodiment, the preset inclination angle range of the cross roller guide is 2-5°.

[0027] In an optional embodiment, the supporting assembly includes a plurality of first lifting units, and the first lifting units are synchronously lifted after the first sensors are triggered to lift the glass substrate to a predetermined height.

[0028] In an optional embodiment, the pusher assembly includes a longitudinal displacement assembly and a transverse displacement assembly;

[0029] The longitudinal displacement assembly and the lateral displacement assembly are respectively arranged at two adjacent side ends of the air floating platform assembly, and are used to push the glass substrate to move in different directions.

[0030] In an optional embodiment, the supporting column assembly includes a plurality of second lifting units, and after the supporting assembly rises, the second lifting units are lowered to a low position to release the support on the glass substrate.

[0031] In a second aspect, the present invention provides a positioning method based on the system described in any of the aforementioned embodiments, comprising the following steps:

[0032] S1. Placing the glass substrate on the supporting column assembly to trigger the first sensor to detect the initial position;

[0033] S2. The support assembly rises and lifts the glass substrate, the support column assembly descends, and the glass substrate is transferred to the air floating platform assembly;

[0034] S3. The pusher assembly pushes the glass substrate to a rough positioning position, and the second sensor detects the edge position and then turns off the signal;

[0035] S4. The deviation adjustment assembly is started, and the angle of the glass substrate is adjusted by synchronous movement of the cross roller guide and the clamp;

[0036] S5. Monitor the adjustment amount in real time until the glass substrate reaches the preset accuracy requirement.

[0037] The beneficial effects of the embodiments of the present invention are:

[0038] The high-precision positioning of the glass substrate is achieved through the coordinated work of the mechanical alignment device and the deviation adjustment component under the control of the controller. The initial position and moving path of the glass substrate can be accurately controlled through the support component, the pusher component and the bearing column component in the mechanical alignment device. The flatness and parallelism of the glass substrate can be fine-tuned after rough positioning through the deviation adjustment component to ensure the position accuracy of the glass substrate during processing and improve the printing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0040] Figure 1 A front view of a large-size glass substrate positioning system provided by an embodiment of the present invention;

[0041] Figure 2 A schematic diagram of the three-dimensional structure of a large-size glass substrate positioning system provided by an embodiment of the present invention;

[0042] Figure 3 A front view of a deviation adjustment component of a large-size glass substrate positioning system provided by an embodiment of the present invention;

[0043] Figure 4A schematic diagram of the three-dimensional structure of a deviation adjustment component of a large-size glass substrate positioning system provided by an embodiment of the present invention;

[0044] Figure 5 A cross-sectional view of an intermediate rotating assembly of a large-size glass substrate positioning system provided by an embodiment of the present invention;

[0045] Figure 6 A flow chart of a positioning method for a large-size glass substrate positioning system provided by an embodiment of the present invention.

[0046] Icons: 1: air floating platform assembly; 2: mounting base plate; 3: support assembly; 4: load-bearing column assembly; 5: longitudinal displacement assembly; 6: lateral displacement assembly; 7: deflection adjustment assembly; 7-1: guide rail mounting plate; 7-2: cross roller guide rail; 7-3: clamp; 8: intermediate rotating assembly; 8-1: intermediate fixed shaft; 8-2: fixed seat; 8-3: load connecting plate; 9: magnetic grid assembly. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0048] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. 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.

[0049] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0050] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0051] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0052] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] Combine the following Figure 1-Figure 5 , some embodiments of the present invention are described in detail. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0054] In a first aspect, the present invention provides a large-size glass substrate positioning system, comprising a controller, a mechanical alignment device and an adjustment component; the controller is connected to the mechanical alignment device and the adjustment component by signals; the mechanical alignment device comprises a support component 3, a pusher component, a bearing column component 4, a first sensor, a second sensor and an air floating platform component 1; the air floating platform component 1 is used to suspend the glass substrate; the support component 3 is arranged below the air floating platform component 1 and can be raised and lowered through the active area of ​​the air floating platform component 1; the pusher component is arranged at one end of the air floating platform and is used to push the glass substrate to move; the bearing column component 4 is arranged through the air floating platform component 1 and is used to carry the glass substrate after the support component 3 descends; the first sensor is arranged on the air floating platform component 1 and is used to detect the initial position of the glass substrate; the second sensor is arranged on the air floating platform component 1 and is used to detect the edge position of the glass substrate; the adjustment component is arranged on one side of the mechanical alignment device and is used to adjust the flatness and parallelism of the glass substrate after the rough positioning.

[0055] In this embodiment, after the glass substrate is placed on the supporting column assembly 4, the first sensor detects the initial position of the glass substrate and sends a detection signal to the controller. After receiving the signal from the first sensor, the controller controls the support assembly 3 to rise and lift the glass substrate to a predetermined height. After the support assembly 3 is raised, the supporting column assembly 4 drops to a low position to release the bearing on the glass substrate. Subsequently, the glass substrate is smoothly transferred to the air flotation platform assembly 1 under the support of the support assembly 3. The push assembly pushes the glass substrate to the rough positioning position, and the second sensor detects the edge position of the glass substrate and turns off the signal after the glass substrate reaches the predetermined position, indicating that the glass substrate has reached the rough positioning position. Next, the controller controls the positioning camera to start, captures the Mark mark on the glass substrate, and sends the position information of the Mark mark to the controller. Finally, the controller controls the start of the deviation adjustment assembly according to the Mark mark position information fed back by the positioning camera, and adjusts the angle of the glass substrate to meet the preset flatness and parallelism requirements.

[0056] In an optional embodiment, the deviation adjustment assembly includes a mounting base plate 2, a clamp 7-3 and a deviation adjustment subassembly 7; the deviation adjustment subassembly 7 includes a cross roller guide 7-2 and a guide mounting plate 7-1; the cross roller guide 7-2 is arranged on the guide mounting plate 7-1, and the guide mounting plate 7-1 is arranged on the mounting base plate 2; the clamp 7-3 is arranged at the end of the cross roller guide 7-2; the cross roller guide 7-2 has a preset inclination angle.

[0057] In this embodiment, the mounting base plate 2 of the deviation adjustment assembly is fixed to one side of the mechanical alignment device to provide a stable mounting base for other components. The mounting base plate 2 is usually made of high-strength material to ensure stability during the deviation adjustment process and avoid deformation or vibration of the base plate affecting the deviation adjustment accuracy.

[0058] In this embodiment, the cross roller guide rail 7-2 of the deflection adjustment subassembly 7 is arranged on the guide rail mounting plate 7-1 and has a preset tilt angle. The arrangement of the cross roller guide rail 7-2 enables the deflection adjustment subassembly 7 to move smoothly on the guide rail while maintaining high-precision linear motion. The tilt direction of the cross roller guide rail 7-2 is consistent with the moving direction of the clamp 7-3, ensuring that the clamp 7-3 can accurately adjust the angle of the glass substrate during movement.

[0059] In this embodiment, the clamp 7-3 is mounted on the cross roller guide rail 7-2 through a slider, and can move along a preset direction on the guide rail. The movement of the slider is usually controlled by a precise driving mechanism (such as a servo motor) to ensure the accuracy and stability of the movement.

[0060] In this embodiment, the clamper 7-3 is used to clamp and fix the glass substrate. The clamper 7-3 usually adopts a vacuum adsorption or mechanical clamping method to ensure the stability and safety of the glass substrate during the deflection adjustment process.

[0061] In this embodiment, the working process of the deviation adjustment component is as follows:

[0062] After the glass substrate is roughly positioned, the deflection adjustment component is started. At this time, the deflection adjustment subassembly 7 is located at the initial position, and the clamp 7-3 is ready to clamp the glass substrate; the clamp 7-3 fixes the glass substrate by vacuum adsorption or mechanical clamping to ensure that the glass substrate does not move or slide during the deflection adjustment process; the clamp 7-3 moves on the cross roller guide 7-2 to adjust the angle of the glass substrate. The movement of the clamp 7-3 is driven by a servo motor, and the movement accuracy is controlled within ±0.01mm; when the angle adjustment of the glass substrate reaches the preset accuracy requirement, the deflection adjustment component stops working, and the glass substrate completes the precise positioning.

[0063] In this embodiment, through the precise cooperation of the cross roller guide 7-2 and the clamp 7-3, the deviation adjustment assembly can achieve high-precision angle adjustment to ensure the position accuracy of the glass substrate during the processing. The inclination direction of the cross roller guide 7-2 is consistent with the moving direction of the clamp 7-3, which can ensure the stability and stability of the deviation adjustment process and reduce errors caused by vibration or shaking.

[0064] In an optional embodiment, the deviation adjustment assembly further includes an intermediate rotating assembly 8 ; the number of the deviation adjustment subassemblies 7 is two, and the intermediate rotating assembly 8 is disposed on the mounting base plate 2 and located between the two deviation adjustment subassemblies 7 .

[0065] In this embodiment, the intermediate rotating assembly 8 is arranged on the mounting base plate 2 and is located between the two deflection adjusting subassemblies 7. The main function of the intermediate rotating assembly 8 is to convert the linear motion of the clamp 7-3 into the rotational motion of the glass substrate. The rotation angle is linearly related to the displacement of the clamp 7-3, thereby realizing the precise adjustment of the flatness and parallelism of the glass substrate.

[0066] Specifically, in this embodiment, the intermediate rotating assembly 8 includes an intermediate fixed shaft 8-1, a fixed seat 8-2 and a load connecting plate 8-3, wherein one end of the intermediate fixed shaft 8-1 is installed on the mounting base 2, the fixed seat 8-2 is sleeved on the intermediate fixed shaft 8-1, one end of the load connecting plate 8-3 is connected to the fixed seat 8-2, and the other end is connected to the clamp 7-3.

[0067] In an optional embodiment, the deflection adjustment component also includes a magnetic grid component 9; the magnetic grid component 9 is arranged on the side of the cross roller guide 7-2, and is used to detect the displacement of the deflection adjustment subassembly 7 and feed back the displacement signal to the controller.

[0068] In this embodiment, the magnetic grid assembly 9 monitors the displacement of the clamp 7-3 in real time and feeds back the displacement signal to the controller. The controller makes real-time adjustments based on the feedback signal to ensure that the angle adjustment of the glass substrate meets the preset accuracy requirements and improves the adjustment efficiency.

[0069] In an optional embodiment, the clamp 7 - 3 is a negative pressure adsorption structure.

[0070] In this embodiment, the clamper 7 - 3 absorbs the glass substrate in the form of negative pressure, thereby achieving the purpose of clamping the glass substrate and driving the glass substrate to move.

[0071] It can be understood that in this embodiment, the clamp 7-3 is a negative pressure adsorption structure, but it is not limited to this structure, and it can also be other structures, such as a mechanical clamping structure, a magnetic adsorption structure, etc. for clamping and fixing.

[0072] In this embodiment, a flexible layer is provided on the adsorption surface of the clamper 7 - 3 , so as to avoid damage to the glass substrate while ensuring the negative pressure adsorption effect, thereby protecting the glass substrate.

[0073] In an optional embodiment, the preset inclination angle range of the cross roller guide rail 7-2 is 2-5°.

[0074] Specifically, in this embodiment, the preset inclination angle is 3°.

[0075] In an optional embodiment, the supporting assembly 3 includes a plurality of first lifting units, and the first lifting units are synchronously lifted after the first sensor is triggered to lift the glass substrate to a predetermined height.

[0076] In this embodiment, the lifting of the first lifting unit can be independent or linked and synchronous.

[0077] Specifically, in this embodiment, after receiving the trigger signal from the first sensor, the controller sends a command to the first lifting unit to make all the first lifting units rise synchronously.

[0078] This synchronous lifting mechanism ensures that the glass substrate is evenly stressed, avoiding deformation or damage caused by uneven local stress. The lifting height of each lifting unit is precisely controlled by the controller to ensure that the glass substrate can be lifted to the predetermined height.

[0079] In an optional embodiment, the pusher assembly includes a longitudinal displacement assembly 5 and a lateral displacement assembly 6; the longitudinal displacement assembly 5 and the lateral displacement assembly 6 are respectively arranged at two adjacent side ends of the air floating platform assembly 1, and are used to push the glass substrate to move in different directions.

[0080] In this embodiment, the pushing assembly includes a longitudinal displacement assembly 5 and a lateral displacement assembly 6, which are respectively arranged at two adjacent side ends of the air floating platform assembly 1, and are used to push the glass substrate to move in different directions.

[0081] Specifically, in this embodiment, the longitudinal displacement assembly 5 is installed at one end of the air floating platform assembly 1, and is used to push the glass substrate along the length direction of the air floating platform; the lateral displacement assembly 6 is installed at the other end of the air floating platform assembly 1, and is used to push the glass substrate along the width direction of the air floating platform.

[0082] In this embodiment, the pushing assembly can push the glass substrate in two directions to meet different processing requirements and improve the flexibility and adaptability of the system.

[0083] In this embodiment, the contact surfaces of the longitudinal displacement component 5 and the lateral displacement component 6 with the glass substrate are made of flexible materials to avoid scratches or damage to the glass substrate, thereby improving the yield rate of the product.

[0084] In an optional embodiment, the supporting column assembly 4 includes a plurality of second lifting units. After the supporting assembly 3 rises, the second lifting units are lowered to a low position to release the support on the glass substrate.

[0085] In this embodiment, the number of the second lifting units is relatively large and they are arranged in a matrix, which can better realize the bearing of a large-area glass substrate.

[0086] In this embodiment, the second lifting unit may be lifted in a synchronous linkage manner or may be lifted independently.

[0087] The synchronous linkage lifting can ensure the balance of the supporting force for the glass substrate, and the independent lifting can facilitate the independent inspection and maintenance of the second lifting unit.

[0088] Second, as Figure 6 As shown, the present invention provides a positioning method based on any of the systems described in the aforementioned embodiments, comprising the following steps:

[0089] S1. Place the glass substrate on the supporting column assembly 4, triggering the first sensor to detect the initial position;

[0090] S2. The support assembly 3 rises and lifts the glass substrate, the support column assembly 4 descends, and the glass substrate is transferred to the air floating platform assembly 1;

[0091] S3. The pusher assembly pushes the glass substrate to a rough positioning position, and the second sensor detects the edge position and then turns off the signal;

[0092] S4. The deflection adjustment assembly is started, and the angle of the glass substrate is adjusted by synchronous movement of the cross roller guide 7-2 and the clamp 7-3;

[0093] S5. Monitor the adjustment amount in real time until the glass substrate reaches the preset accuracy requirement.

[0094] In this embodiment, the specific positioning method is as follows:

[0095] S1. Initial position detection:

[0096] The glass substrate is placed on the supporting column assembly 4, and the first sensor is triggered to detect the initial position. After the first sensor detects the initial position of the glass substrate, a signal is sent to the controller.

[0097] S2. Support assembly 3 rises:

[0098] After receiving the signal from the first sensor, the controller controls the support assembly 3 to rise and lift the glass substrate. The multiple first lifting units of the support assembly 3 rise synchronously to lift the glass substrate to a predetermined height. After the support assembly 3 rises, the bearing column assembly 4 drops to a low position to release the bearing on the glass substrate.

[0099] S3. Coarse positioning:

[0100] The pusher assembly pushes the glass substrate to the rough positioning position. The longitudinal displacement assembly 5 and the lateral displacement assembly 6 of the pusher assembly are respectively arranged at two adjacent side ends of the air floating platform assembly 1, and are used to push the glass substrate to move in different directions. The second sensor detects the edge position of the glass substrate and turns off the signal, indicating that the glass substrate has reached the rough positioning position.

[0101] S4. Precision positioning:

[0102] The deflection adjustment component is started, and the angle of the glass substrate is adjusted by the synchronous movement of the cross roller guide 7-2 and the clamp 7-3. The clamp 7-3 moves on the cross roller guide 7-2. The clamp 7-3 is set at the end of the cross roller guide 7-2 through a slider, and the glass substrate is adjusted by the clamp 7-3. The magnetic grid component 9 detects the displacement of the clamp 7-3 in real time, and feeds back the displacement signal to the controller. The controller makes real-time adjustments according to the feedback signal until the glass substrate reaches the preset accuracy requirement.

[0103] S5. Positioning completed:

[0104] When the glass substrate reaches the preset accuracy requirement, the positioning process is completed and subsequent processing or treatment can be carried out.

[0105] It can be seen from the above that the entire positioning process is automatically controlled by the controller, from initial position detection, lifting of the support component 3, pushing of the pusher component to adjustment of the deviation adjustment component, all without the need for manual intervention, thereby improving production efficiency.

[0106] The beneficial effects of the embodiments of the present invention are:

[0107] The high-precision positioning of the glass substrate is achieved through the coordinated work of the mechanical alignment device and the deflection adjustment component. The initial position and moving path of the glass substrate can be accurately controlled by the support component 3, the pusher component and the bearing column component 4 in the mechanical alignment device. The flatness and parallelism of the glass substrate can be fine-tuned after rough positioning by the deflection adjustment component, thereby ensuring the position accuracy of the glass substrate during processing and improving the printing quality.

[0108] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A large-size glass substrate positioning system, characterized in that: It includes a controller, a mechanical alignment device and an adjustment component; The controller is connected to the mechanical alignment device and the deviation adjustment component by signal; The mechanical alignment device includes a support assembly, a material pushing assembly, a bearing column assembly, a first sensor, a second sensor and an air floating platform assembly; The air floating platform assembly is used to suspend the glass substrate; The support assembly is arranged below the air floating platform assembly and can be lifted and lowered to pass through the activity area of ​​the air floating platform assembly; The pushing assembly is arranged at one end of the air floating platform, and is used to push the glass substrate to move; The bearing column assembly is arranged through the air floating platform assembly, and is used to bear the glass substrate after the supporting assembly descends; The first sensor is disposed on the air floating platform assembly and is used to detect an initial position of the glass substrate; The second sensor is disposed on the air floating platform assembly and is used to detect the edge position of the glass substrate; The deviation adjustment component is arranged at one side of the mechanical alignment device, and is used for adjusting the flatness and parallelism of the glass substrate after the rough positioning.

2. The large-size glass substrate positioning system according to claim 1, characterized in that: The deflection adjustment assembly comprises a mounting base plate, a clamp and a deflection adjustment subassembly; The deflection adjustment subassembly includes a cross roller guide rail and a guide rail mounting plate; The cross roller guide rail is arranged on the guide rail mounting plate, and the guide rail mounting plate is arranged on the mounting bottom plate; The clamp is arranged at the end of the cross roller guide rail; The cross roller guide has a preset inclination angle.

3. The large-size glass substrate positioning system according to claim 2, characterized in that: The deviation adjustment assembly also includes an intermediate rotating assembly; There are two deflection adjustment sub-assemblies, and the intermediate rotating assembly is arranged on the mounting base plate and located between the two deflection adjustment sub-assemblies.

4. The large-size glass substrate positioning system according to claim 2, characterized in that: The deflection adjustment assembly also includes a magnetic grid assembly; The magnetic grid assembly is arranged on the side of the cross roller guide rail, and is used to detect the displacement of the clamper and feed back the displacement signal to the controller.

5. The large-size glass substrate positioning system according to claim 2, characterized in that: The clamp is a negative pressure adsorption structure.

6. The large-size glass substrate positioning system according to claim 2, characterized in that: The preset inclination angle range on the cross roller guide is 2-5°.

7. The large-size glass substrate positioning system according to claim 1, characterized in that: The supporting assembly includes a plurality of first lifting units, and the first lifting units are synchronously lifted after the first sensors are triggered to lift the glass substrate to a predetermined height.

8. The large-size glass substrate positioning system according to claim 1, characterized in that: The pusher assembly includes a longitudinal displacement assembly and a transverse displacement assembly; The longitudinal displacement assembly and the lateral displacement assembly are respectively arranged at two adjacent side ends of the air floating platform assembly, and are used to push the glass substrate to move in different directions.

9. The large-size glass substrate positioning system according to claim 1, characterized in that: The bearing column assembly includes a plurality of second lifting units. After the supporting assembly rises, the second lifting units are lowered to a low position to release the bearing on the glass substrate.

10. A positioning method based on the system according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Placing the glass substrate on the supporting column assembly to trigger the first sensor to detect the initial position; S2. The support assembly rises and lifts the glass substrate, the support column assembly descends, and the glass substrate is transferred to the air floating platform assembly; S3. The pusher assembly pushes the glass substrate to a rough positioning position, and the second sensor detects the edge position and then turns off the signal; S4. The deflection adjustment assembly is started to adjust the angle of the glass substrate by synchronous movement of the cross roller guide and the clamp; S5. Monitor the adjustment amount in real time until the glass substrate reaches the preset accuracy requirement.

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