A device for detecting micro-deformation defects on a glass substrate surface

Abstract

The application discloses a kind of glass substrate surface microdeformation defect detection device, including workbench, the upper end surface of workbench is rotationally arranged with placing frame, multiple sliding grooves are symmetrically opened on the side wall of placing frame, sliding block is slidably arranged in each sliding groove, connecting frame is fixed on the both sides of sliding block, mobile frame is movably arranged in each connecting frame, U-shaped mounting plate is movably arranged on the inner wall of each mobile frame, two extrusion rollers are rotationally arranged on the inner wall of U-shaped mounting plate, the side of workbench is provided with curtain, the side of workbench is provided with light source;The application is used, by using reflection principle, by the cooperation of glass substrate and curtain, light pattern is projected on curtain, the situation on the surface of glass substrate is indirectly reacted by light pattern, so that the surface of glass substrate is detected by operator conveniently.

Description

Technical Field

[0001] This invention relates to the field of glass substrate inspection technology, and in particular to a device for detecting micro-deformation defects on the surface of glass substrates. Background Technology

[0002] Currently, in the high-generation TFT-LCD glass substrate industry, there are two main methods for detecting surface micro-deformations:

[0003] The first method involves visually inspecting the glass substrate on the production line or at the sampling inspection station. However, this method relies on visual inspection to determine the deformation of the glass substrate. On-site manual inspection is easily affected by external light, impacting defect identification and reducing inspection efficiency. Furthermore, this method struggles to directly observe subtle deformations and cannot accurately determine which side of the glass substrate the deformed area is bulging towards.

[0004] The second method involves using a surface roughness tester to detect micro-deformations on the surface of the glass substrate. Samples are taken, cut, and then placed under the surface roughness tester for inspection. This method requires expensive testing equipment, resulting in a significant financial investment. Furthermore, the measuring range of such instruments is generally within 300mm, requiring the cutting of a large number of samples, leading to a long inspection time and low efficiency.

[0005] Therefore, it is necessary to propose a detection device that is simple in structure, low in cost, and has higher detection efficiency to overcome the above problems. Summary of the Invention

[0006] The purpose of this invention is to solve the problems existing in the prior art by proposing a detection device for micro-deformation defects on the surface of a glass substrate.

[0007] To achieve the above objectives, the present invention adopts the following technical solutions:

[0008] A device for detecting micro-deformation defects on the surface of a glass substrate includes a worktable. A placement frame is rotatably mounted on the upper surface of the worktable. Multiple sliding grooves are symmetrically opened on the side walls of the placement frame. A sliding block is slidably mounted in each sliding groove. A connecting frame is fixed on both sides of the sliding block. A movable frame is movably mounted in each connecting frame. A U-shaped mounting plate is movably mounted on the inner wall of each movable frame. Two extrusion rollers are symmetrically rotatably mounted on the inner wall of the U-shaped mounting plate. A curtain is mounted on one side of the worktable, and a light source is mounted on another side of the worktable.

[0009] As a further technical solution of the present invention, two built-in circular grooves are provided on the inner wall of each of the movable frames, and a spring is fixed between the U-shaped mounting plate and the built-in circular grooves.

[0010] As a further technical solution of the present invention, a movable block is movably arranged on the inner wall of each connecting frame, the movable block is fixedly connected to the outer wall of the moving frame, and guide blocks are fixed on both sides of the movable block and the moving frame. Two guide grooves are symmetrically opened on the inner wall of the connecting frame to cooperate with the guide blocks.

[0011] As a further technical solution of the present invention, the same U-shaped connecting plate is fixed on the side wall of two adjacent moving blocks.

[0012] As a further technical solution of the present invention, four lead screws are rotatably arranged inside the placement frame. Each lead screw is threaded through two adjacent sliding blocks. A bevel gear is fixedly sleeved on the outer side wall at both ends of each lead screw, and two adjacent bevel gears are meshed and connected.

[0013] As a further technical solution of the present invention, an L-shaped connecting frame is fixed on one side of the workbench, and a placement frame is rotatably disposed between the L-shaped connecting frame and the workbench.

[0014] As a further technical solution of the present invention, a transmission rod is fixed to the lower end of one of the lead screws, the transmission rod rotates through the placement frame, a transmission gear is fixed to the lower end of the transmission rod, and two arc-shaped racks that cooperate with the transmission gear are fixed to the upper surface of the worktable.

[0015] The beneficial effects of this invention are:

[0016] 1. Place the device in a darkroom, then fix the glass substrate to be tested inside the placement frame. Turn on the light source and rotate the placement frame towards the screen. During this rotation, the glass substrate rotates along with the frame. Utilizing the principle of reflection, light patterns are projected onto the screen. These light patterns indirectly reflect the surface condition of the glass substrate, facilitating surface inspection by the operator. The device is simple in structure and easy to use.

[0017] 2. When the glass substrate to be tested is placed in the placement frame, the sliding block is pushed to move the moving frame closer to the glass substrate. As the moving frame approaches the glass substrate, the U-shaped mounting plate and the pressing roller inside the moving frame will move out from inside the moving frame until the pressing roller touches the surface of the glass substrate, thereby positioning and clamping the glass substrate, which is convenient to operate. After the glass substrate is tested, the operator presses down on each moving frame, and the moving frame pushes the moving block to move closer to the connecting frame until the moving frame is completely inside the connecting frame, which makes it convenient for the operator to remove or install the glass substrate. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2This is a schematic diagram of the internal structure of the sliding groove of the present invention;

[0020] Figure 3 This is a schematic diagram showing the connection between the sliding block and the connecting frame of the present invention;

[0021] Figure 4 This is a schematic diagram of the internal structure of the movable frame of the present invention;

[0022] Figure 5 This is a schematic diagram showing the connection between the movable frame and the movable block of the present invention;

[0023] Figure 6 This is a schematic diagram showing the connection between the worktable and the arc-shaped rack of the present invention.

[0024] In the diagram: 1. Workbench; 2. Placement frame; 3. Sliding groove; 4. Sliding block; 5. Connecting frame; 6. Moving frame; 7. U-shaped mounting plate; 8. Extrusion roller; 9. Curtain; 10. Light source; 11. Spring; 12. Moving block; 13. U-shaped connecting plate; 14. Lead screw; 15. L-shaped connecting frame; 16. Transmission rod; 17. Transmission gear; 18. Arc-shaped rack. Detailed Implementation

[0025] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structure, features and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0026] Reference Figures 1-6 A device for detecting micro-deformation defects on the surface of a glass substrate includes a worktable 1. A placement frame 2 is rotatably mounted on the upper surface of the worktable 1. Multiple sliding grooves 3 are symmetrically opened on the side walls of the placement frame 2. A sliding block 4 is slidably mounted in each sliding groove 3. A connecting frame 5 is fixed on both sides of the sliding block 4. A movable frame 6 is movably mounted in each connecting frame 5. A U-shaped mounting plate 7 is movably mounted on the inner wall of each movable frame 6. Two extrusion rollers 8 are symmetrically rotatably mounted on the inner wall of the U-shaped mounting plate 7. A white curtain 9 is mounted on one side of the worktable 1. A light source 10 is mounted on one side of the worktable 1, positioned directly in front of the worktable 1. The curtain 9 is positioned directly to the left of the worktable 1. The illuminance of the light source 10 needs to reach more than 30,000 LUX.

[0027] The device is placed in a dark room. The glass substrate to be tested is then fixedly placed in the placement frame 2. The light source 10 is turned on, and the placement frame 2 is rotated towards the screen 9. During the rotation, the glass substrate is rotated together with the placement frame 2. Using the principle of reflection, light patterns are projected onto the screen 9. The surface condition of the glass substrate is indirectly reflected by the light patterns, which makes it convenient for the operator to inspect the surface of the glass substrate.

[0028] When the glass substrate to be tested is placed in the placement frame 2, the sliding block 4 is pushed to move the moving frame 6 toward the glass substrate. As the moving frame 6 approaches the glass substrate, the U-shaped mounting plate 7 and the pressing roller 8 inside the moving frame 6 will move out from inside the moving frame 6 until the pressing roller 8 touches the surface of the glass substrate, thereby positioning and clamping the glass substrate, which is convenient to operate.

[0029] Two built-in circular grooves are provided on the inner wall of each movable frame 6. A spring 11 is fixed between the U-shaped mounting plate 7 and the built-in circular groove. The spring 11 allows the U-shaped mounting plate 7 and the pressing roller 8 to have a certain stroke. On the one hand, the U-shaped mounting plate 7 and the pressing roller 8 can be completely retracted into the movable frame 6. On the other hand, the device can clamp and fix glass substrates of different thicknesses, making it highly adaptable.

[0030] Each connecting frame 5 has a movable block 12 movably installed on its inner wall. The movable block 12 is fixedly connected to the outer wall of the moving frame 6. Guide blocks are fixed on both sides of the movable block 12 and the moving frame 6. Two guide grooves are symmetrically opened on the inner wall of the connecting frame 5 to cooperate with the guide blocks. After the glass substrate is inspected, the operator presses down on each moving frame 6. The moving frame 6 pushes the movable block 12 to move closer to the connecting frame 5 until the moving frame 6 is completely inside the connecting frame 5, which makes it convenient for the operator to remove or install the glass substrate.

[0031] The same U-shaped connecting plate 13 is fixed on the side wall of two adjacent moving blocks 12. By pushing the U-shaped connecting plate 13, the two moving blocks 12 can be moved together at one time, which is convenient to use.

[0032] Four lead screws 14 are rotatably installed inside the placement frame 2. Each lead screw 14 is threaded through two adjacent sliding blocks 4. Bevel gears are fixedly sleeved on the outer walls at both ends of each lead screw 14. Adjacent bevel gears mesh with each other. When one lead screw 14 rotates, the engagement of the adjacent bevel gears drives all lead screws 14 to rotate together. During the rotation of each lead screw 14, it can drive the two adjacent sliding blocks 4 to move away from each other, thereby moving the corresponding moving frame 6 a certain distance, thus exposing the part that was previously blocked by the moving frame 6, and also inspecting that part, thus enabling a more comprehensive inspection of the glass substrate.

[0033] An L-shaped connecting frame 15 is fixed on one side of the workbench 1. The placement frame 2 is rotatably positioned between the L-shaped connecting frame 15 and the workbench 1. The placement frame 2 carries the glass substrate to be tested and can rotate freely between the workbench 1 and the L-shaped connecting frame 15, making it convenient to use.

[0034] One of the lead screws 14 has a transmission rod 16 fixed to its lower end. The transmission rod 16 rotates through the placement frame 2. The transmission gear 17 is fixed to the lower end of the transmission rod 16. Two arc-shaped racks 18 that cooperate with the transmission gear 17 are fixed to the upper surface of the worktable 1. The two arc-shaped racks 18 are arranged in a centrally symmetrical manner.

[0035] When the placement frame 2 rotates with the glass substrate to a certain angle, the transmission gear 17 will contact the arc-shaped rack 18. At this time, the transmission gear 17 and the arc-shaped rack 18 will mesh and connect. The transmission gear 17 will rotate a certain angle, thereby driving the transmission rod 16 and the lead screw 14 connected to it to rotate, providing a power source for the rotation of the lead screw 14. All of these processes occur during the rotation of the placement frame 2.

[0036] When using this invention, the device is placed in a dark room, and the glass substrate to be tested is fixedly placed in the placement frame 2. The light source 10 is turned on, and the placement frame 2 is rotated towards the screen 9. During the rotation of the placement frame 2, the glass substrate is rotated together. Using the principle of reflection, the light pattern is projected onto the screen 9. The light pattern indirectly reflects the condition of the glass substrate surface, thus facilitating the operator to inspect the surface of the glass substrate.

[0037] When the glass substrate to be tested is placed in the placement frame 2, the sliding block 4 is pushed to move the moving frame 6 toward the glass substrate. As the moving frame 6 approaches the glass substrate, the U-shaped mounting plate 7 and the pressing roller 8 inside the moving frame 6 will move out from inside the moving frame 6 until the pressing roller 8 touches the surface of the glass substrate, thereby positioning and clamping the glass substrate. The operation is convenient.

[0038] After the glass substrate is inspected, the operator presses down on each movable frame 6. The movable frame 6 pushes the movable block 12 to move closer to the connecting frame 5 until the movable frame 6 is completely inside the connecting frame 5, making it convenient for the operator to remove or install the glass substrate.

[0039] When the operator rotates the placement frame 2 to a certain angle, the transmission gear 17 will contact the arc-shaped rack 18. At this time, the transmission gear 17 and the arc-shaped rack 18 will mesh and connect. The transmission gear 17 will rotate a certain angle, thereby driving the transmission rod 16 and the lead screw 14 connected to it to rotate, providing a power source for the rotation of the lead screw 14. When one of the lead screws 14 rotates, through the cooperation of the adjacent bevel gears, it will drive all the lead screws 14 to rotate together. During the rotation of each lead screw 14, it can drive the two adjacent sliding blocks 4 to move away from each other, thereby driving the corresponding moving frame 6 to move a certain distance, thereby exposing the part that was previously covered by the moving frame 6, and also inspecting this part, so that the inspection of the glass substrate can be more comprehensive.

[0040] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A device for detecting micro-deformation defects on the surface of a glass substrate, comprising a worktable (1), characterized in that, The upper surface of the workbench (1) is rotatably provided with a placement frame (2). Multiple sliding grooves (3) are symmetrically opened on the side wall of the placement frame (2). A sliding block (4) is slidably arranged in each sliding groove (3). A connecting frame (5) is fixed on both sides of the sliding block (4). A moving frame (6) is movably arranged in each connecting frame (5). A U-shaped mounting plate (7) is movably arranged on the inner wall of each moving frame (6). Two extrusion rollers (8) are symmetrically rotatably arranged on the inner wall of the U-shaped mounting plate (7). A curtain (9) is arranged on one side of the workbench (1). A light source (10) is arranged on one side of the workbench (1). Each of the connecting frames (5) has a movable block (12) movably disposed on its inner wall. The movable block (12) is fixedly connected to the outer wall of the movable frame (6). Guide blocks are fixed on both sides of the movable block (12) and the movable frame (6). Two guide grooves are symmetrically opened on the inner wall of the connecting frame (5) to cooperate with the guide blocks. The same U-shaped connecting plate (13) is fixed on the side wall of two adjacent movable blocks (12). The placement frame (2) is rotatably equipped with four lead screws (14), each lead screw (14) is threaded through two adjacent sliding blocks (4), and bevel gears are fixedly sleeved on the outer side walls at both ends of each lead screw (14), and two adjacent bevel gears are meshed and connected. One of the lead screws (14) has a transmission rod (16) fixed at its lower end. The transmission rod (16) rotates through the placement frame (2). The transmission gear (17) is fixed at the lower end of the transmission rod (16). Two arc-shaped racks (18) that cooperate with the transmission gear (17) are fixed on the upper surface of the worktable (1).

2. The device for detecting micro-deformation defects on the surface of a glass substrate according to claim 1, characterized in that, Two built-in circular grooves are provided on the inner wall of each of the movable frames (6), and a spring (11) is fixed between the U-shaped mounting plate (7) and the built-in circular groove.

3. The device for detecting micro-deformation defects on the surface of a glass substrate according to claim 1, characterized in that, An L-shaped connecting frame (15) is fixed on one side of the workbench (1), and a frame (2) is rotatably positioned between the L-shaped connecting frame (15) and the workbench (1).

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