Glass flatness detection device

Abstract

The utility model discloses a glass flatness detection device which comprises a conveying structure, a discharging structure and a measuring structure, the conveying structure is provided with a conveying channel used for conveying pieces to be detected, and a qualified piece discharging end is formed at one end of the conveying channel; the discharging structure comprises a supporting assembly and a material taking assembly, the supporting assembly is arranged on one side of the conveying channel to form an unqualified part discharging end, the material taking assembly is provided with a material taking end extending from the conveying channel to the unqualified part discharging end, and the material taking end is used for taking the unqualified parts in the conveying channel and conveying the unqualified parts to the unqualified part discharging end; the measuring structure is arranged on the conveying channel and is used for measuring the flatness of the to-be-measured piece on the conveying channel; according to the scheme, qualified glass substrates and unqualified glass substrates can be classified in time, so that the situation that a large number of glass substrates are redetected due to classification errors is avoided, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of flatness detection, and particularly relates to a glass flatness detection device. Background Art

[0002] ‌A glass substrate‌ is a thin glass sheet with an extremely flat surface and is one of the key basic materials in the flat panel display industry. It is mainly produced by methods such as the float process, overflow down-draw method, and slot down-draw method, and is mainly used to form liquid crystal display devices. As a basic component, the glass substrate is a thin glass sheet produced by the float process and has physical and chemical properties such as a high melting point, good chemical stability, and strong insulation. This material has advantages in electrical, physical, and chemical properties, and its thermal and mechanical properties are also superior to organic materials. Therefore, it is suitable for various high-demand electronic packaging fields. The application of the glass substrate not only improves the heat dissipation performance, reduces the risk of deformation and fracture, but also allows more functions to be integrated on the same chip, helping to improve the computing speed and energy efficiency. In addition, the high-density packaging ability of the glass substrate makes the line width, line pitch, bump size, etc. more refined, and can effectively improve various performances such as the interconnection density, laying the foundation for the semiconductor industry to still be able to maintain Moore's Law after 2030. With the promotion of technology giants, glass-based technology is expected to become a key direction for chip development, gradually develop into the mainstream packaging substrate in the next-generation market, and promote the accelerated development of the electronic packaging market‌.

[0003] Chinese Patent with the publication number CN117781915A provides an on-line measuring device for the warpage image of a liquid crystal substrate glass, including a roller conveying component, and a supporting component for lifting the liquid crystal substrate glass is arranged on the side of the roller conveying component; a second calibration component is arranged on the side of the roller conveying component, and the second calibration component includes an infrared sensor; an image measuring component is arranged on the side of the roller conveying component, and the image measuring component includes a protective cover, a grid plate, and a camera; the infrared sensor and the camera are connected to the PLC control system, and the infrared sensor is used to detect that after the liquid crystal substrate glass reaches a predetermined position, the camera is controlled by the PLC control system to take a picture to obtain the reflection image of the grid plate reflected on the surface of the liquid crystal substrate glass; the PLC control system is used to compare and judge whether the warpage quality of the obtained image is qualified; when the measuring device detects the flatness of the glass substrate, it is mainly conveyed by the roller conveying component to the lower part of the image measuring component, and then the glass substrate detected by the image measuring component is conveyed out of the measuring device.

[0004] When the existing measuring device is detecting, glass substrates are sequentially placed on the roller conveying assembly, enabling the roller conveying assembly to convey multiple glass substrates synchronously to improve the detection efficiency. However, when the measuring device detects a non-conforming glass substrate, it will continue to convey the non-conforming glass substrate from the original channel, and finally the corresponding glass substrate is manually removed. This conveying method conveys the non-conforming glass substrates mixed with the conforming glass substrates, resulting in the inconvenience of distinguishing between the conforming and non-conforming glass substrates after being sent out, and it is easy to be confused. If there is a classification error, a large number of glass substrates need to be reinspected, greatly reducing the production efficiency. Summary of the Invention

[0005] The purpose of the present invention is to overcome the above technical deficiencies and propose a glass flatness detection device to solve the technical problem that in the prior art, the non-conforming glass substrates detected by the measuring assembly are conveyed mixed with the conforming glass substrates, resulting in the inconvenience of distinguishing between the conforming and non-conforming glass substrates after being sent out, being easy to be confused, and if there is a classification error, a large number of glass substrates need to be reinspected, greatly reducing the production efficiency.

[0006] To achieve the above technical objectives, the present invention adopts the following technical solutions:

[0007] The present invention provides a glass flatness detection device, including: a conveying structure, a discharging structure, and a measuring structure. The conveying structure has a conveying channel for conveying the workpiece to be measured, and one end of the conveying channel forms a conforming workpiece discharging end; the discharging structure includes a supporting assembly and a material taking assembly. The supporting assembly is arranged on one side of the conveying channel to form a non-conforming workpiece discharging end. The material taking assembly has a material taking end extending from the conveying channel to the non-conforming workpiece discharging end, and the material taking end is used to pick up the non-conforming workpiece in the conveying channel and convey the non-conforming workpiece to the non-conforming workpiece discharging end; the measuring structure is arranged on the conveying channel for measuring the flatness of the workpiece to be measured on the conveying channel. [[ID=!2]]

[0008] In some embodiments, the measuring structure and the discharging structure are sequentially arranged along the conveying direction of the conveying channel.

[0009] In some embodiments, the conveying structure includes a roller conveying assembly and a ball conveying assembly. The ball conveying assembly is located between two groups of rollers of the roller conveying assembly, so that a conveying channel is formed between the top of the ball conveying assembly and the tops of the two groups of rollers of the roller conveying assembly.

[0010] In some embodiments, the roller conveying assembly includes a roller bracket, a first roller group, and a second roller group. The first roller group and the second roller group are respectively arranged at two ends of the roller bracket. Both the first roller group and the second roller group include a plurality of rollers arranged in sequence along the length direction of the roller bracket. Both ends of each roller are rotatably connected to the roller bracket. The roller conveying assembly further includes a rotation driving member for driving the rollers in the first roller group and the second roller group to rotate.

[0011] In some embodiments, the ball conveying assembly includes a first mounting plate, a plurality of first balls, a mounting frame, and a driving cylinder. The first mounting plate is horizontally arranged between the first roller group and the second roller group. The plurality of first balls are all mounted on the top surface of the first mounting plate and can rotate on the first mounting plate. The top ends of the plurality of first balls are at the same height as the top ends of the rollers in the first roller group and the second roller group. The ball conveying assembly further includes a mounting frame and a driving cylinder. The mounting frame is arranged below the mounting plate and is connected to the roller bracket. The driving cylinder is mounted on the mounting frame, and its driving end extends upward and is connected to the mounting plate to drive the mounting plate to perform a lifting motion.

[0012] In some embodiments, the support assembly includes a second bracket, a second mounting plate, and a plurality of second balls. The second mounting plate is arranged on one side of the conveying channel through the second bracket. The plurality of second balls are all mounted on the top surface of the second mounting plate and can rotate on the second mounting plate. The material taking assembly includes a first electric guide rail, a third mounting plate, and a plurality of vacuum suction cups. One end of the first electric guide rail is connected to the conveying structure through a first support rod, and the other end is connected to the support assembly through a second support rod. The third mounting plate is connected to the driving end of the first electric guide rail. The plurality of vacuum suction cups are all mounted on the third mounting plate.

[0013] In some embodiments, the measuring structure includes a second electric guide rail and a plurality of cameras. The second electric guide rail is mounted on the conveying channel. The plurality of cameras are arranged in sequence along the length direction of the second electric guide rail and are connected to the driving end of the second electric guide rail.

[0014] Compared with the prior art, the glass flatness detection device provided by the utility model, through the arranged conveying structure, discharging structure and measuring structure, when encountering uneven glass, can use the material taking end of the material taking component to take the unqualified glass substrate and convey it to the unqualified part discharging end on one side of the conveying channel, while the qualified glass will continue to be conveyed and directly discharged from the qualified part discharging end. This solution enables timely classification of qualified and unqualified glass substrates, avoiding situations such as classification errors and resulting in a large number of glass substrates being re-inspected, which is beneficial to improving production efficiency. Brief Description of the Drawings

[0015] Figure 1 is the overall front view structural schematic diagram of the glass flatness detection device provided by the embodiment of the utility model;

[0016] Figure 2 is the three-dimensional structural schematic diagram of the conveying structure of the glass flatness detection device provided by the embodiment of the utility model;

[0017] Figure 3 is the top view structural schematic diagram of the conveying structure of the glass flatness detection device provided by the embodiment of the utility model;

[0018] Figure 4 is the side view structural schematic diagram of the discharging structure of the glass flatness detection device provided by the embodiment of the utility model;

[0019] Figure 5 is the front view structural schematic diagram of the material taking component of the glass flatness detection device provided by the embodiment of the utility model;

[0020] Figure 6 is the side view structural schematic diagram of the measuring structure of the glass flatness detection device provided by the embodiment of the utility model.

[0021] Description of the Reference Numerals:

[0022] 1, conveying structure; 11, roller conveying component; 111, roller support; 112, first roller group; 113, second roller group; 12, ball conveying component; 121, first mounting plate; 122, first ball; 123, mounting frame; 124, driving cylinder;

[0023] 2, discharging structure; 21, supporting component; 211, second support; 212, second mounting plate; 213, second ball; 22, material taking component; 221, first electric guide rail; 222, third mounting plate; 223, vacuum chuck; 224, first support rod; 225, second support rod;

[0024] 3, measuring structure; 31, second electric guide rail; 32, camera. Detailed Embodiment

[0025] In order to make the purpose, technical solutions and advantages of the present utility model more clear and understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0026] In order to solve the technical problem that the unqualified glass substrates detected by the measurement component are mixed with the qualified glass substrates for transportation, resulting in the inconvenience of distinguishing the qualified and unqualified glass substrates after being sent out, and being prone to confusion. If there is a classification error, a large number of glass substrates need to be reinspected, which greatly reduces the production efficiency. The present utility model provides a glass flatness detection device, which can classify the qualified glass substrates and unqualified glass substrates in time to avoid the situation of classification error and a large number of glass substrates being reinspected, which is beneficial to improving the production efficiency.

[0027] It should be noted that the glass flatness detection device described in the present utility model is used for but not limited to glass substrates, etc. For the convenience of description, in the present utility model, only the case where the glass flatness detection device is applied to glass substrates is taken as an example for description, and the principle of the glass flatness detection device applied to other types of parts is substantially the same as that applied to glass substrates, and will not be elaborated here one by one.

[0028] Please refer to Figures 1 to 6 , the glass flatness detection device includes: a conveying structure 1, a discharging structure 2 and a measuring structure 3. The conveying structure 1 has a conveying channel for conveying a workpiece to be measured, and one end of the conveying channel forms a qualified workpiece discharging end; the discharging structure 2 includes a supporting component 21 and a material taking component 22. The supporting component 21 is arranged on one side of the conveying channel to form an unqualified workpiece discharging end. The material taking component 22 has a material taking end extending from the conveying channel to the unqualified workpiece discharging end, and the material taking end is used to pick up the unqualified workpiece in the conveying channel and convey the unqualified workpiece to the unqualified workpiece discharging end; the measuring structure 3 is arranged on the conveying channel for measuring the flatness of the workpiece to be measured on the conveying channel.

[0029] In this solution, the workpiece to be measured can be conveyed through the conveying structure 1. During conveying, the flatness of the workpiece to be measured on the conveying channel is measured by the measuring structure 3 arranged on the conveying channel. When encountering uneven glass, the unqualified glass substrate can be picked up by the material taking end of the material taking component 22 and conveyed to the unqualified workpiece discharging end on one side of the conveying channel, while the qualified glass will continue to be conveyed and directly discharged from the qualified workpiece discharging end for discharging classification.

[0030] In this embodiment, please refer to Figure 1, the measurement structure 3 and the discharging structure 2 are arranged in sequence along the conveying direction of the conveying channel, so that the glass substrate will first pass through the measurement structure 3 for flatness measurement and then be conveyed to the position corresponding to the discharging structure 2. At this time, the glass substrate has been detected as a qualified part or an unqualified part. When it is a qualified part, it continues to be conveyed by the conveying structure 1. When it is an unqualified part, the glass substrate is conveyed to the unqualified part discharging end by the material taking assembly 22 of the discharging structure 2.

[0031] For the convenience of discharging unqualified parts, in this embodiment, please refer to Figure 1 , the conveying structure 1 includes a roller conveying assembly 11 and a ball conveying assembly 12. The ball conveying assembly 12 is located between two groups of rollers of the roller conveying assembly 11, so that a conveying channel is formed between the top of the balls of the ball conveying assembly 12 and the tops of the two groups of rollers of the roller conveying assembly 11. When the glass substrate is conveyed to the ball conveying assembly 12, it is convenient to move out from the side for discharging.

[0032] Preferably, in one embodiment, please refer to Figures 1 to 4 , the roller conveying assembly 11 includes a roller bracket 111, a first roller group 112 and a second roller group 113. The first roller group 112 and the second roller group 113 are respectively arranged at both ends of the roller bracket 111. The first roller group 112 and the second roller group 113 are arranged at intervals. The first roller group 112 and the second roller group 113 both include a plurality of rollers arranged in sequence along the length direction of the roller bracket 111. The plurality of rollers are arranged in parallel, and both ends of each roller are rotatably connected to the roller bracket 111 to convey the glass substrate through a plurality of rollers.

[0033] The ball conveying assembly 12 includes a first mounting plate 121 and a plurality of first balls 122. The first mounting plate 121 is horizontally arranged between the first roller group 112 and the second roller group 113. The plurality of first balls 122 are all mounted on the top surface of the first mounting plate 121, and they are arranged in a rectangular array and can rotate on the first mounting plate 121. The tops of the plurality of first balls 122 are at the same height as the tops of the rollers in the first roller group 112 and the second roller group 113. When the glass substrate is conveyed from the first roller group 112 to the second roller group 113, it will pass through the first balls 122. The first balls 122 have a high degree of rotational freedom and can support the glass substrate to discharge from the side of the conveying channel.

[0034] Further, the rotation of the rollers in the first roller group 112 and the second roller group 113 is driven by a rotation driving member, and the rotation driving member can be a motor or an electric rotating shaft.

[0035] Preferably, in some embodiments, please refer to Figure 1 and Figure 4 , the ball conveying assembly 12 further includes a mounting frame 123 and a driving cylinder 124. The mounting frame 123 is arranged below the mounting plate, and both sides of the mounting frame 123 are fixedly connected to both sides of the roller bracket 111 through two connecting plates respectively. A plurality of driving cylinders 124 are arranged and are all mounted on the mounting frame 123, arranged vertically. The driving end of the driving cylinder 124 extends upward and is fixedly connected to the mounting plate, and it can drive the mounting plate to move up and down, so as to lift the glass substrate on the first balls 122 upward, making the glass substrate away from the roller, avoiding friction between the glass substrate and the roller when the glass substrate moves to the side, and thus making it more convenient to move the unqualified glass substrate to the side.

[0036] In order to realize the classified conveying of unqualified parts, in this embodiment, please refer to Figure 4 , the support assembly 21 includes a second bracket 211, a second mounting plate 212 and a plurality of second balls 213. The second mounting plate 212 is arranged on one side of the conveying channel through the second bracket 211, and is specifically mounted on one side of the ball conveying assembly 12. Both sides of the second mounting plate 212 are fixedly connected to the second bracket 211 to be stably placed on the side of the conveying structure 1. A plurality of the second balls 213 are all embedded in the top surface of the second mounting plate 212 and can rotate on the second mounting plate 212. By setting the ball support, the glass substrate can be conveyed onto the support assembly 21 from any one of its sides, and after being placed on the plurality of second balls 213, it can also be removed from any one of its sides.

[0037] In order to be able to take out the glass substrate in the conveying channel and convey it onto the second balls 213 of the support assembly 21, this solution uses a vacuum chuck 223 for adsorption and clamping and conveying. In this embodiment, please refer to Figure 1 , Figure 4 and Figure 5The material picking assembly 22 includes a first electric guide rail 221, a third mounting plate 222 and a plurality of vacuum suction cups 223. One end of the first electric guide rail 221 is fixedly connected to the conveying structure 1 through a first support rod 224, and the other end thereof is fixedly connected to the support assembly 21 through a second support rod 225, so that it is arranged across the conveying channel and the support structure. The third mounting plate 222 is connected to the driving end of the first electric guide rail 221. A plurality of vacuum suction cups 223 are all mounted on the third mounting plate 222. The suction cup part of the vacuum suction cup 223 is downward, and its inner cavity is in contact with the vacuum The air outlet of the air pump is connected. When the driving cylinder 124 drives the first mounting plate 121 to move upward, the glass substrate is driven to move upward through the first ball 122 until the first ball 122 is flush with the second ball 213. At this time, the glass substrate contacts the vacuum suction cup 223. The vacuum pump is used to generate negative pressure in the inner cavity of the vacuum suction cup 223 to adsorb the glass substrate. Then, the first electric guide rail 221 is used to drive the third mounting plate 222 and the vacuum suction cup 223 to move upward to the support assembly 21 until the glass substrate is separated from the conveying channel and dragged onto the second ball 213.

[0038] In this example, see Figure 6 The measuring structure 3 includes a second electric guide rail 31 and several cameras 32. The second electric guide rail 31 is installed on the conveying channel. The several cameras 32 are arranged in sequence along the length direction of the second electric guide rail 31 and are connected to the driving end of the second electric guide rail 31.

[0039] It should be noted that the detection by camera 32 is an existing technology. When the glass substrate reaches directly below the camera 32, the position of the substrate glass is detected by the sensor. After the camera 32 obtains the image, the degree of deformation of the image is used to reflect the flatness of the liquid crystal substrate glass. Generally, the degree of deformation of the liquid crystal glass substrate to be tested is obtained by comparing the image of the flat glass plate reflected by the grid plate with the image of the laser substrate glass to be tested, and judging whether its flatness is qualified.

[0040] Of course, the measurement structure 3 may also include an illumination component that can provide appropriate illumination light for shooting.

[0041] Working principle: During implementation, the glass substrates to be measured are placed one by one on the rollers of the first roller group 112. The glass substrates are conveyed to the second roller group 113 through the first ball 122 group and will be photographed by the camera 32. The images photographed by the camera 32 are fed back to the control system for detecting the flatness of the glass substrates. When the detection is qualified, the glass substrates continue to be conveyed to the second roller group 113 after passing through the ball conveying assembly 12 and are discharged through the qualified part discharge end of the second roller group 113. If the flatness of the glass substrate is detected to be unqualified, when the glass substrate is conveyed to the ball conveying assembly 12, the driving cylinder 124 will drive the first mounting plate 121 to move upward, drive the glass substrate to move upward through the first ball 122, make the glass substrate contact the vacuum chuck 223 and be adsorbed, and then drive the third mounting plate 222 and the vacuum chuck 223 to move above the support assembly 21 through the first electric guide rail 221, so as to drag the glass substrate onto the second ball 213. Subsequently, the vacuum pump connected to the vacuum chuck 223 is turned off, and the unqualified glass substrate remains at the unqualified part discharge end, realizing the classification of qualified and unqualified glass substrates.

[0042] Through the provided conveying structure 1, discharging structure 2 and measuring structure 3 of the present utility model, when encountering uneven glass, the unqualified glass substrate can be taken by the taking end of the taking component 22 and conveyed to the unqualified part discharge end on one side of the conveying channel, while the qualified glass will continue to be conveyed and directly discharged from the qualified part discharge end. This solution enables timely classification of qualified and unqualified glass substrates, avoiding classification errors and the situation of a large number of glass substrates being re-inspected, which is beneficial to improving production efficiency.

[0043] The above specific implementation manners of the present utility model do not constitute a limitation to the protection scope of the present utility model. Any other corresponding changes and deformations made according to the technical concept of the present utility model shall be included in the protection scope of the claims of the present utility model.

Claims

1. A glass flatness detection device, characterized in that, Comprising: A conveying structure having a conveying channel for conveying a workpiece to be measured, and one end of the conveying channel forms a qualified workpiece discharging end; A discharging structure including a supporting assembly and a material taking assembly. The supporting assembly is arranged on one side of the conveying channel to form a non - qualified workpiece discharging end. The material taking assembly has a material taking end extending from the conveying channel to the non - qualified workpiece discharging end, and the material taking end is used to pick up the non - qualified workpiece in the conveying channel and convey the non - qualified workpiece to the non - qualified workpiece discharging end; And, A measuring structure arranged on the conveying channel for measuring the flatness of the workpiece to be measured on the conveying channel.

2. The glass flatness detection device according to claim 1, characterized in that, The measuring structure and the discharging structure are arranged in sequence along the conveying direction of the conveying channel.

3. The glass flatness detection device according to claim 1, wherein The conveying structure includes a roller conveying assembly and a ball conveying assembly. The ball conveying assembly is located between two groups of rollers of the roller conveying assembly, so that a conveying channel is formed between the top of the ball conveying assembly and the tops of the two groups of rollers of the roller conveying assembly.

4. The glass flatness detection device according to claim 3, characterized in that, The roller conveying assembly includes a roller support, a first roller group and a second roller group. The first roller group and the second roller group are respectively arranged at both ends of the roller support. Both the first roller group and the second roller group include a plurality of rollers arranged in sequence along the length direction of the roller support, and both ends of each roller are rotatably connected to the roller support.

5. The glass flatness detection device according to claim 4, characterized in that, The roller conveying assembly further includes a rotation driving member for driving the rollers in the first roller group and the second roller group to rotate.

6. The glass flatness detection device according to claim 5, characterized in that, The ball conveying assembly includes a first mounting plate and a plurality of first balls. The first mounting plate is horizontally arranged between the first roller group and the second roller group. The plurality of first balls are all mounted on the top surface of the first mounting plate and can rotate on the first mounting plate. The tops of the plurality of first balls are at the same height as the tops of the rollers in the first roller group and the second roller group.

7. The glass flatness detection device according to claim 6, wherein The ball conveying assembly further includes a mounting frame and a driving cylinder. The mounting frame is arranged below the mounting plate and is connected to the roller support. The driving cylinder is mounted on the mounting frame, and its driving end extends upward and is connected to the mounting plate for driving the mounting plate to perform lifting motion.

8. The glass flatness detection device according to claim 1, characterized in that, The supporting assembly includes a second support, a second mounting plate and a plurality of second balls. The second mounting plate is arranged on one side of the conveying channel through the second support. The plurality of second balls are all mounted on the top surface of the second mounting plate and can rotate on the second mounting plate.

9. The glass flatness detection device according to claim 1, wherein, The material taking assembly includes a first electric guide rail, a third mounting plate and a plurality of vacuum suction cups. One end of the first electric guide rail is connected to the conveying structure through a first support rod, and the other end is connected to the supporting assembly through a second support rod. The third mounting plate is connected to the driving end of the first electric guide rail, and the plurality of vacuum suction cups are all mounted on the third mounting plate.

10. The glass flatness detection device according to claim 1, wherein, The measuring structure includes a second electric guide rail and a plurality of cameras. The second electric guide rail is mounted on the conveying channel. The plurality of cameras are arranged in sequence along the length direction of the second electric guide rail and are connected to the driving end of the second electric guide rail.

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