A glass substrate production line and production method

Abstract

The application discloses a kind of glass substrate production line, including clean partition, darkroom, camera acquisition device, optical light source and display curtain wall, clean partition is provided with darkroom and first conveying device in, darkroom is set on the conveying path of first conveying device, camera acquisition device, optical light source and display curtain wall are all set in darkroom, camera acquisition device and optical light source are adjacent to each other, phenomenon curtain wall is located at the top in darkroom;Rotary table for fixing and limiting glass substrate is transmitted on first conveying device, rotary table is also used to drive glass substrate to rotate, optical light source is used to irradiate glass substrate.The automatic inspection equipment designed in the application can confirm the collected optical defect pattern and perform board rejection processing, which not only avoids the risk of missed detection, but also reduces the workload of manual sampling inspection, greatly reducing labor consumption and economic loss.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of glass production, in particular to a glass substrate production line and a production method. BACKGROUND

[0002] With the continuous development of intelligence, glass has become one of the important structural parts in the intelligent overall structure design. In order to go further in the liquid crystal panel display industry, in the rapid and healthy development of the global liquid crystal panel industry today, the product quality should be improved while meeting the requirements of high definition, light weight and ultra-thin. In the production of high-generation TFT substrate glass float process, the glass substrate needs to be formed by using a tin bath. Various factors may cause tin sticking and other defects. The glass substrate contacts the roller bed during transmission, and foreign matter may accumulate at the long-time contact position, which may affect the panel quality. The tin surface contact part may cause different optical defect areas due to the accumulation of small particles on the roller bed. At present, there is no obvious difference in warping, stress, thickness difference, etc. in this optical defect area. Only through offline inspection during optical darkroom inspection, the problem can be found. Therefore, there is a certain risk of missing detection. Therefore, it is urgent to invent a production line automatic inspection device or a production line with automatic inspection function and packaging function. This can not only avoid the risk of missing detection, but also reduce the workload of manual sampling inspection, reduce labor consumption and economic loss. SUMMARY

[0003] The purpose of the present application is to solve the problem of missing detection due to the accumulation of foreign matter on the roller bed during the transmission of the glass substrate in the existing glass float process. The glass substrate may cause optical defect areas. However, there is no obvious difference in warping, stress, thickness difference, etc. in this area. Only through offline inspection during optical darkroom inspection, the problem can be found. Therefore, there is a certain risk of missing detection. Therefore, a glass substrate production line is proposed.

[0004] The purpose of the present application can be achieved by the following technical solutions:

[0005] A glass substrate production line, comprising a clean partition, a darkroom, a camera acquisition device, an optical light source and a display curtain wall, characterized in that the clean partition is provided with a darkroom and a first conveying device, the darkroom is arranged on the conveying path of the first conveying device, the camera acquisition device, the optical light source and the display curtain wall are arranged in the darkroom, the camera acquisition device and the optical light source are adjacent to each other, and the display curtain wall is located at the top end in the darkroom.

[0006] The first conveying device is provided with a rotating table for fixing and limiting the glass substrate, the rotating table is also used for rotating the glass substrate, the optical light source is used for irradiating the glass substrate, and the camera acquisition device is used for recording and capturing pictures.

[0007] As a further scheme of the present application, the rotating table comprises a frame and a supporting leg, a rotating part for rotation is arranged between the frame and the supporting leg, and a plurality of suction cups for adsorbing the glass substrate are arranged on the frame body of one end surface of the frame.

[0008] As a further scheme of the present application, two symmetrical vertical conveying devices are arranged on the conveying path of the first conveying device in the darkroom, a horizontal conveying device is arranged between the two vertical conveying devices, and the two vertical conveying devices and the horizontal conveying device all convey clockwise.

[0009] As a further scheme of the present application, a stand column is vertically arranged at the bottom of the darkroom, the camera acquisition device and the optical light source are fixed on the stand column, and the horizontal conveying device is located between the screen wall and the stand column.

[0010] As a further scheme of the present application, two packaging positions are arranged near the conveying end tail of the first conveying device on one side of the clean interval.

[0011] As a further scheme of the present application, a second robot is arranged near the first conveying device and the two packaging positions, and the second robot is used for grabbing and placing the glass substrate fixed on the rotating table.

[0012] As a further scheme of the present application, a conveying roller set is arranged at the conveying end head of the first conveying device, and the conveying roller set is connected with the first conveying device in a head-tail mode.

[0013] As a further scheme of the present application, a first robot is arranged near the conveying roller set and the first conveying device, and the first robot is used for grabbing and placing the glass substrate on the rotating table.

[0014] The automatic inspection equipment designed in the present application can confirm the collected optical defect patterns and perform board scrapping processing, so that the risk of missing detection can be avoided, the workload of manual sampling inspection is reduced, and human consumption and economic loss are greatly reduced. BRIEF DESCRIPTION OF DRAWINGS

[0015] The present application will be further described below with reference to the drawings.

[0016] Fig. 1 is a structural schematic diagram of the present application.

[0017] Fig. 2 is a schematic diagram of the rotating table structure of the present application;

[0018] Fig. 3 is a schematic diagram of the optical light source and the camera acquisition device of the present application.

[0019] In the figure: 1, clean partition; 2, conveying roller; 3, first conveying device; 4, first robot; 5, rotating table; 51, sliding wheel; 52, supporting leg; 53, rotating part; 54, suction cup; 55, frame; 56, placing position; 6, second conveying device; 7, third conveying device; 8, fourth conveying device; 9, camera acquisition device; 91, fixing device; 92, stand; 93, optical light source; 10, display curtain wall; 11, second robot; 12, first packaging position; 13, second packaging position; 14, darkroom; 15, drop plate device. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0021] Embodiment one, please refer to Figs. 1-3 The present application is a kind of glass substrate production line, including clean partition 1, darkroom 14, camera acquisition device 9, optical light source 93 and display curtain wall 10, the clean partition 1 is provided with darkroom 14 and first conveying device 3 in it, the darkroom 14 is arranged on the conveying path of the first conveying device 3, the camera acquisition device 9, optical light source 93 and display curtain wall 10 are all arranged in the darkroom 14, the camera acquisition device 9 and the optical light source 93 are adjacent to each other, and the display curtain wall 10 is located at the top end in the darkroom 14.

[0022] The first conveying device 3 is conveyed with rotating table 5 for fixing and limiting glass substrate, the rotating table 5 is also used to drive the glass substrate to rotate, the optical light source 93 is used for irradiating the glass substrate, and the camera acquisition device 9 is used for recording and capturing pictures.

[0023] Embodiment two, please refer to Figs. 1-3As shown, the present application is a glass substrate production line, comprising a clean partition 1, a darkroom 14, a camera acquisition device 9, an optical light source 93 and a display curtain wall 10, the clean partition 1 is provided with the darkroom 14 and the first conveying device 3, the darkroom 14 is arranged on the conveying path of the first conveying device 3, the camera acquisition device 9, the optical light source 93 and the display curtain wall 10 are all arranged in the darkroom 14, the camera acquisition device 9 and the optical light source 93 are adjacent to each other, and the display curtain wall 10 is located at the top end in the darkroom 14.

[0024] The first conveying device 3 is provided with a rotating table 5 for fixing and limiting the glass substrate, the rotating table 5 is also used to drive the glass substrate to rotate, the optical light source 93 is used to irradiate the glass substrate, and the camera acquisition device 9 is used to record and capture pictures.

[0025] The rotating table 5 comprises a frame 55 and a supporting leg 52, a rotating piece 53 for rotation is arranged between the frame 55 and the supporting leg 52, and a plurality of suction cups 54 for adsorbing the glass substrate are arranged on the frame body of one end face of the frame 55.

[0026] Embodiment three, please refer to Figs. 1-3 As shown, the present application is a glass substrate production line, comprising a clean partition 1, a darkroom 14, a camera acquisition device 9, an optical light source 93 and a display curtain wall 10, the clean partition 1 is provided with the darkroom 14 and the first conveying device 3, the darkroom 14 is arranged on the conveying path of the first conveying device 3, the camera acquisition device 9, the optical light source 93 and the display curtain wall 10 are all arranged in the darkroom 14, the camera acquisition device 9 and the optical light source 93 are adjacent to each other, and the display curtain wall 10 is located at the top end in the darkroom 14.

[0027] The first conveying device 3 is provided with a rotating table 5 for fixing and limiting the glass substrate, the rotating table 5 is also used to drive the glass substrate to rotate, the optical light source 93 is used to irradiate the glass substrate, and the camera acquisition device 9 is used to record and capture pictures.

[0028] The rotating table 5 comprises a frame 55 and a supporting leg 52, a rotating piece 53 for rotation is arranged between the frame 55 and the supporting leg 52, and a plurality of suction cups 54 for adsorbing the glass substrate are arranged on the frame body of one end face of the frame 55.

[0029] Two symmetrical vertical conveying devices, i.e., a second conveying device 6 and a fourth conveying device 8, are further arranged on the conveying path of the first conveying device 3 in the darkroom 14.

[0030] A horizontal conveying device is also arranged between the two vertical conveying devices, which is a third conveying device 7.

[0031] The two vertical conveying devices and the horizontal conveying device all convey clockwise.

[0032] A stand 92 is vertically arranged at the bottom of the darkroom 14, and the camera collecting device 9 and the optical light source 93 are both fixed on the stand 92. The horizontal conveying device is located between the phenomenon curtain wall 10 and the stand 92.

[0033] In another embodiment, two packaging positions are arranged near the conveying end of the first conveying device 3. A second robot 11 is arranged near the first conveying device 3 and the two packaging positions, and the second robot 11 is used to grab and place the glass substrate fixed on the rotating table 5.

[0034] In another embodiment, a conveying roller set 2 is arranged at the conveying end of the first conveying device 3, and the conveying roller set 2 is connected to the first conveying device 3. A first robot 4 is arranged near the conveying roller set 2 and the first conveying device 3, and the first robot 4 is used to grab and place the glass substrate on the rotating table 5.

[0035] The specific technical solutions include:

[0036] The main structure of the rotating table 5 for automatic inspection adopts a three-dimensional square design, which is divided into two pairs of long and short edges. The internal suction cup 54 can be a traceless suction cup, which realizes the adhesion and separation of the glass substrate and the three-dimensional square rotating table 5 through the suction and release of the traceless suction cup. At the same time, the lower part of the rotating table 5 is designed as a traditional cylindrical rotatable rotating part 53, which stands on the first conveying device 3.

[0037] The working principle of the rotating table 5 for automatic inspection is as follows: after the glass substrate is adsorbed to the three-dimensional frame 55 by the suction cup 54 on the rotating table 5, the transverse supporting leg 52 of the rotating table 5 slides on the conveying belt of the first conveying device 3. When it slides to the end of the conveying belt on the horizontal conveying device, the rotating table 5 starts to rotate slowly from the horizontal state, and then the panoramic irradiation by the optical light source 93 is realized, and the video capture by the matched camera collecting device 9 is realized, and finally it is transmitted to the terminal display for identification. When it rotates to the tail of the transverse conveying belt, it stops, restores the horizontal conveying mode, and sequentially passes through the plate falling device 15 and enters the first packaging position 12 and the second packaging position 13 in the packaging device.

[0038] Preferably, the rotating table 5 can rotate by using the traditional cylindrical rotating mechanism at the bottom thereof, realizing the offline rotation of the glass substrate by human beings.

[0039] The rotating table 5 can rotate 360 degrees, and can identify the state of the air side and the tin side respectively, which is better than manual overturning.

[0040] The rotating table 5 is preferably designed as a three-dimensional square frame, and the side portions are respectively designed as suction cups 54 for adsorbing the glass substrate. The size of this part is designed to be 15-30 mm, which facilitates the adsorption of the glass substrate by the suction cups 54. Taking the G8.5 generation of semi-finished glass substrate as an example, the size of the G8.5 generation of semi-finished glass substrate is 2580*2280 mm, and the size of the G8.5 generation of finished glass substrate is 2500*2200 mm. The excess cutting part of the semi-finished product is exactly adsorbed by the built-in suction cups 54 of the automatic inspection rotating table 5, and does not affect the observation of the quality of the entire plate surface.

[0041] Preferably, the built-in suction cups 54 of the automatic inspection rotating table 5 are positioned to adsorb the glass substrate within the edge cutting size range, which does not affect the quality of the finished glass plate surface.

[0042] The rotating table 5 preferably slides and rotates on the horizontal conveying belt, which is completed in the darkroom 14 to ensure the accuracy of light inspection.

[0043] The speed of the rotating table 5 sliding and rotating on the horizontal conveying belt is preferably controlled at 10-20 degrees per second, and the time on the horizontal conveying belt is maintained at 20-36 seconds.

[0044] Preferably, the automatic inspection rotating table 5 can automatically rotate each angle according to the program, and capture the picture by using the camera, which is better than manual rotation of the angle, and it is also difficult for manual to find the best picture angle.

[0045] The optical light source 93 and the camera acquisition device 9 are mainly in the darkroom 14 and are fixed on the side opposite to the projection screen, and can be arranged opposite to the horizontal conveying belt, so that the optical light source 93 and the camera acquisition device 9 can completely irradiate and capture the picture of the rotating table 5. The structure of the optical light source 93 and the camera acquisition device 9 comprises:

[0046] Preferably, a frame structure is adopted, and the two sides are supported by steel structures on the ground of the darkroom 14 and are fixed by anchor bolts. The steel structure columns on the two sides can be designed to be extended or shortened according to the size of the glass substrate.

[0047] Preferably, the structure in the middle is designed as an upper and lower parallel frame structure.

[0048] Preferably, the upper part is designed as the camera acquisition device 9, which is installed with a 360-degree rotatable camera for recording and capturing pictures, and the height is designed to be slightly higher than the automatic rotating table 5 by 30-40 cm.

[0049] Preferably, the parallel transverse structure located at the lower side of the frame of the camera acquisition device 9 is designed as an optical light source 93 structure for emitting light sources for irradiating the automatic rotating table 5, which can fully cover the transverse conveying belt;

[0050] Preferably, the optical light source intensity can reach 30000LUX-50000LUX;

[0051] The working principle of the optical light source 93 and the camera acquisition device 9: the principle of the optical interferometer fringe instrument is used, that is, any change in the optical path difference of two coherent lights will very sensitively cause the movement of the interference fringes, and the change in the optical path of a certain coherent light is caused by the change in the geometric path or the refractive index of the medium it passes through, so the movement change of the interference fringes can measure the small change of the geometric length or the refractive index. When the glass substrate surface has differences in some components due to different heat history, the light source irradiates the glass substrate surface, which will cause different optical path differences, and the image is displayed on the display screen wall 10, and then the video data is transmitted to the terminal display through the corresponding relationship between the rotating angle of the rotating table 5 and the time, the picture is distinguished, and the quality of the glass substrate is further determined. When the glass substrate meets the quality packaging requirements, it directly enters the automatic packaging device for packaging; when it does not meet the quality control requirements, the terminal display releases the glass substrate through the rotating table 5 frame suction cup 54 and falls through the falling plate device 15.

[0052] The falling plate device 15 includes a transverse conveying belt at the end of the darkroom 14, which is used in linkage when the terminal display distinguishes whether the glass substrate surface quality meets the quality control requirements through video picture discrimination. When the glass substrate meets the quality packaging requirements, the falling plate device 15 is designed to be in a raised state to ensure that the rotating table 5 carrying the glass substrate smoothly passes through to the packaging device in parallel. When it does not meet the quality control requirements, the terminal display releases the glass substrate through the rotating table 5 frame suction cup 54 and falls through the falling plate device 15. After falling, the falling plate device 15 is raised, and the empty rotating table 5 moves to the initial section through the conveying belt opposite to the darkroom 14 (receives the glass substrate coming out of the annealing furnace and performs reciprocating conveying again).

[0053] The automatic packaging device includes one piece grabbing robot and two A-shaped frame packaging positions, wherein the robot position is the second robot 11, and the two A-shaped frame packaging positions are the first packaging position 12 and the second packaging position 13 respectively.

[0054] The piece grabbing robot gripper can cover the two A-shaped frame packaging positions to ensure the stacking of the glass substrate. The bottom of the A-shaped frame packaging position is provided with an automatic counting function (counting by sensing weight accumulation) for packaging qualified semi-finished products. Two packaging positions are designed to facilitate the cross stacking of semi-finished glass substrates and reduce the time waste caused by replacing the A-shaped frame.

[0055] Specific working principle: after the glass substrate comes out from the annealing section of the production line, a piece robot is used to grab the piece and place it on the automatic inspection rotating table 5. The rotating table 5 is adsorbed by the built-in suction cup 54 and slides along the conveying belt. The program starts the rotating function when the rotating table 5 slides to the end of the darkroom 14 horizontal conveying belt. The optical light source 93 is irradiated, and the camera acquisition device 9 starts to capture the picture. When the rotating table 5 slides and rotates to the end of the darkroom 14 horizontal conveying belt, the collected picture is transmitted to the terminal display. The terminal display is used for rapid judgment, and then the glass substrate is determined whether it meets the quality control requirements. After the rotating table 5 slides out of the darkroom 14, the terminal display is used to judge the result, and the glass substrate is packaged or discarded through the linkage of the falling plate device 15. Two A-shaped frame packaging positions are set to quickly switch the full stack of glass and reduce time waste. After the glass substrate is packaged or discarded, the empty rotating table 5 slides to the starting end through the free sliding section, and the glass substrate is conveyed back and forth for inspection, so as to realize the automatic inspection and flow packaging operation.

[0056] The above describes one embodiment of the present application in detail, but the content described is only the preferred embodiment of the present application, and cannot be considered as limiting the scope of the present application. Any equivalent changes and improvements made according to the scope of the present application should still belong to the scope of the claims of the present application.

Claims

1. A glass substrate production line comprising a clean room partition (1), a darkroom (14), a camera acquisition device (9), an optical light source (93) and a display screen wall (10), characterized in that, The clean partition (1) is provided with a darkroom (14) and a first conveying device (3), the darkroom (14) is arranged on the conveying path of the first conveying device (3), the camera acquisition device (9), the optical light source (93) and the display curtain wall (10) are arranged in the darkroom (14), the camera acquisition device (9) and the optical light source (93) are adjacent to each other, and the display curtain wall (10) is located at the top end in the darkroom (14); The first conveying device (3) is provided with a rotating table (5) for fixing and limiting the glass substrate, the rotating table (5) is also used for rotating the glass substrate, the optical light source (93) is used for irradiating the glass substrate, and the camera acquisition device (9) is used for recording and capturing pictures. The rotating table (5) comprises a frame (55) and a supporting leg (52), a rotating piece (53) for rotation is arranged between the frame (55) and the supporting leg (52), and a plurality of suction cups (54) for adsorbing the glass substrate are arranged on the frame body of one end surface of the frame (55). The darkroom (14) is also provided with two symmetrically arranged vertical conveying devices on the conveying path of the first conveying device (3), a horizontal conveying device is arranged between the two vertical conveying devices, and the two vertical conveying devices and the horizontal conveying device all convey clockwise. A stand column (92) is vertically arranged at the bottom of the darkroom (14), the camera acquisition device (9) and the optical light source (93) are fixed on the stand column (92), and the horizontal conveying device is located between the display curtain wall (10) and the stand column (92). When the glass substrate comes out of the annealing section of the production line, a piece robot is used to grab the glass substrate and place it on the rotating table (5) for automatic inspection, the rotating table (5) is adsorbed by the built-in suction cup (54) and slides along the conveying belt, slides to the end of the horizontal conveying belt of the darkroom (14), the program starts the rotating function, the optical light source (93) is irradiated, the camera acquisition device (9) starts to capture pictures, when the rotating table (5) slides and rotates to the terminal end of the horizontal conveying belt of the darkroom (14), the captured pictures are transmitted to the terminal display, the terminal display is used for rapid judgment, and then it is decided whether the glass substrate meets the quality control requirements, after the rotating table (5) slides out of the darkroom (14), the terminal display is used for judging the result, the glass substrate is released for packaging or discarded by the falling plate device (15), and two A-shaped frame packaging positions are arranged to quickly switch the full stack of glass, after the glass substrate is packaged or discarded, the empty rotating table (5) quickly slides to the starting end through the free sliding section, and the conveying and inspection are repeated.

2. A glass substrate production line according to claim 1, characterized in that, Two packaging positions are arranged near the conveying end tail of the first conveying device (3) on one side of the clean partition (1).

3. A glass substrate production line according to claim 2, characterized in that A second robot (11) is arranged near the first conveying device (3) and the two packaging positions, and the second robot (11) is used for grabbing and placing the glass substrate fixed on the rotating table (5).

4. The glass substrate production line of claim 1, wherein, The conveying end of the first conveying device (3) is provided with a conveying roller set (2) which is connected to the first conveying device (3) in a head-to-tail manner.

5. A glass substrate production line according to claim 4, characterized in that A first robot (4) is arranged close to the conveying roller set (2) and the first conveying device (3), and is used for grabbing a glass substrate on the conveying roller set (2) and placing the glass substrate on a rotating table (5).

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