Deflection detection device and method for display glass substrate

Abstract

The invention relates to the technical field of glass deflection detection, in particular to a display glass substrate deflection detection device and method.The device comprises a top frame and further comprises a moving frame, a first driving part, a first electric cylinder, a lifting frame, a suction cup assembly, a second electric cylinder, a first supporting table, a photographing part, four second driving parts, an image processing module and a controller; wherein the photographing part comprises a first graduated scale, a second graduated scale, a third graduated scale and a fourth graduated scale which are arranged below the lifting frame, sliding blocks are arranged above the first graduated scale, the second graduated scale, the third graduated scale and the fourth graduated scale, cameras are arranged at the bottoms of the sliding blocks, and the cameras and the corresponding graduated scales are distributed in a staggered mode; the first supporting table is used for placing a glass substrate, and the top surface of the first supporting table is black. The center of the glass substrate can be automatically found, a large amount of manual operation is omitted, operation is more convenient and faster, and the working efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of glass deflection detection, and in particular to a deflection detection device and method for a display glass substrate. Background Art

[0002] One of the quality inspections for display glass substrates is to test the deflection of the glass substrate. The deflection of the glass substrate refers to the bending deformation in the middle of the glass substrate when it is fixed at both ends under the action of gravity or wind.

[0003] The patent application number 201811183338.X discloses a float glass deflection measuring device, which is characterized in that it includes a base frame, a group of columns supporting the working frame above the base frame, a group of equal-height pads are arranged above the working frame, and a distance meter is arranged at the center below the working frame. Advantages of the present invention: The present invention can measure the deflection value of glass of any thickness, adopts electronic control method for measurement, does not generate reaction force on the glass during the measurement process, and measures accurately. When in use, the glass to be measured is placed horizontally above the equal-height pads. The glass will deform under the action of its own gravity and its internal stress, and the deformation value of the glass is sensed by the distance meter, and the deflection value of the glass is obtained after numerical calculation.

[0004] The inventors have found that there are some deficiencies in the detection using the above-mentioned measuring device, for example: marking the center of the glass pattern with a sticker or a marker, which is usually done manually. Manual marking is done piece by piece, which is inconvenient and inefficient. Summary of the invention

[0005] In view of this, the object of the present invention is to provide a device and method for detecting the deflection of a display glass substrate, so as to solve the problem that manually marking the center of the glass substrate is inconvenient and inefficient.

[0006] Based on the above purpose, the present invention provides a deflection detection device for a display glass substrate, comprising a top frame and further comprising: A mobile frame, a first driving unit, a first electric cylinder, a lifting frame, a suction cup assembly, a second electric cylinder, a first supporting platform, a camera unit, four second driving units, an image processing module and a controller, wherein: The mobile frame is slidably connected to the top frame, the first driving part is transmission-connected to the mobile frame, and is used to drive the mobile frame to move, a third electric cylinder is arranged on the top of the mobile frame, and a telescopic rod of the third electric cylinder is arranged on the side of the first electric cylinder; The first electric cylinder is installed on the moving frame, the lifting frame is arranged at the bottom of the first electric cylinder, and the suction cup assembly is arranged at the bottom of the lifting frame; The second electric cylinder is vertically arranged at the center of the bottom of the lifting frame; The photographing unit comprises a first scale, a second scale, a third scale and a fourth scale arranged below the lifting frame, the first scale and the second scale are parallel to the long side of the lifting frame, the third scale and the fourth scale are parallel to the short side of the lifting frame, the scales of the first scale, the second scale, the third scale and the fourth scale are arranged on the bottom surface, and gradually increase from the center to the edge along the lifting frame, a slider is arranged above the first scale, the second scale, the third scale and the fourth scale, a camera is arranged at the bottom of the slider, and the camera is staggered with the corresponding scale; The four second driving parts are respectively connected to the four sliders in a transmission manner, and are used to drive the sliders to move; The first supporting platform is used to place the glass substrate, and the top surface of the first supporting platform is black; The four cameras are initially close to one side of the center of the lifting frame, and the glass substrate to be inspected is first transferred to the first support platform through the suction cup assembly, and the first electric cylinder is controlled to shorten. Then, the four cameras take pictures of the glass substrate respectively. Since the top surface of the first support platform is black, the scale will be imaged on the glass substrate. The image processing module selects the photo in which the glass substrate is closest to the center of the photo as the first photo, and obtains the scales corresponding to the four edges of the glass substrate in the first photo. The controller controls the corresponding second driving part to drive the slider to move the corresponding scales, so that the four cameras are respectively moved to the corresponding edges of the glass substrate, and then the four cameras take pictures to obtain the glass substrate. The photo of the edge of the substrate is used as the second photo, and the first scale value L1, the second scale value L2, the third scale value L3 and the fourth scale value L4 corresponding to the first scale, the second scale, the third scale and the fourth scale at the edge of the glass substrate in the second photo are obtained by the image processing module. The horizontal movement amount and the vertical movement amount of the lifting frame are calculated based on the first scale value L1, the second scale value L2, the third scale value L3 and the fourth scale value L4. The lifting frame is driven to move the horizontal movement amount by the first driving unit, and the lifting frame is driven to move the vertical movement amount by the third electric cylinder, so that the second electric cylinder is located at the center of the glass substrate, and the second electric cylinder is used for labeling.

[0007] Optionally, the horizontal movement amount is calculated by the following formula: Horizontal movement = ,in: When L1 is greater than L2, S1=L1, and the first driving unit drives the lifting frame to move horizontally toward one side of the first scale; When L1 is less than L2, S1=L2, and the first driving unit drives the lifting frame to move horizontally toward one side of the second scale; Vertical movement = ,in: When L3 is greater than L4, S2=L3, and the third electric cylinder drives the lifting frame to move vertically toward one side of the third scale; When L3 is less than L4, S2=L4, and the third electric cylinder drives the lifting frame to move vertically toward one side of the fourth scale.

[0008] Optionally, the first driving unit includes a sixth electric cylinder, the sixth electric cylinder is installed on the top frame, and one end of the telescopic rod of the sixth electric cylinder is arranged on the movable frame.

[0009] Optionally, the second driving part includes a screw rod rotatably connected to the bottom of the lifting frame, one end of the screw rod is transmission-connected to a motor, and the slider is threadedly connected to the screw rod.

[0010] Optionally, the device further comprises a detection unit, which is disposed below the top frame and detects the deflection of the glass substrate based on the label.

[0011] Optionally, the detection unit includes a base frame, a second support platform is provided on the base frame, a support rod is provided on the second support platform, the second support platform has a first through groove, a laser rangefinder is provided below the center of the first through groove, fourth electric cylinders are provided on both sides of the laser rangefinder, a support plate is provided on the top of the fourth electric cylinder, and a second through groove is provided on the support plate.

[0012] Optionally, the device further comprises a tearing portion, wherein the tearing portion is arranged at the bottom of the lifting frame, and the tearing portion is used to tear off the label attached to the glass substrate.

[0013] Optionally, the tearing portion includes a fifth electric cylinder arranged on both sides of the second electric cylinder, a pull rope is provided on the telescopic rod of the fifth electric cylinder, a label is provided between the two pull ropes, and an adhesive layer is provided at the bottom of the label.

[0014] Based on the same invention, the present invention also provides a detection method of a deflection detection device for a display glass substrate, comprising: Obtaining scales corresponding to four edges of the glass substrate in the first photo, and controlling the corresponding second driving unit through the controller to drive the slider to move the corresponding scales, so that the four cameras are respectively moved to the corresponding edges of the glass substrate; Then, the four cameras are used to take photos of the edge of the glass substrate as a second photo, and the image processing module is used to obtain the first scale value L1, the second scale value L2, the third scale value L3 and the fourth scale value L4 corresponding to the first scale, the second scale, the third scale and the fourth scale at the edge of the glass substrate in the second photo respectively; The horizontal movement amount and the vertical movement amount of the lifting frame are calculated based on the first scale value L1, the second scale value L2, the third scale value L3 and the fourth scale value L4, the lifting frame is driven to move the horizontal movement amount by the first driving part, and the lifting frame is driven to move the vertical movement amount by the third electric cylinder, so that the second electric cylinder is located at the center of the glass substrate, the suction cup assembly re-adsorbs the glass substrate, and the label is attached by the second electric cylinder; After the label is pasted, the first electric cylinder is shortened to re-adsorb the glass substrate on the first support platform, and then the first driving unit and the third electric cylinder are used to control the lifting frame to move so that the label is moved directly above the laser rangefinder. The first electric cylinder is extended to support both sides of the glass substrate through the support rod, and the glass substrate is in a horizontal state through the support of the support plate. Then the suction cup assembly releases the glass substrate, and the first electric cylinder is shortened. The first distance from the laser rangefinder to the tag is obtained by detection through the laser rangefinder, and then the fourth electric cylinder is shortened to separate the support plate from the glass substrate. The glass substrate bends under the action of its own gravity. After stabilization, the second distance from the laser rangefinder to the tag is obtained by detection through the laser rangefinder, and the deflection of the glass substrate is obtained by subtracting the second distance from the first distance.

[0015] When the detection device is working, the four cameras are initially close to one side of the center of the lifting frame. At this time, the scales at the positions of the four cameras correspond to the 0 scale of the corresponding scale. The glass substrate to be detected is first transferred to the first support platform by the suction cup assembly, and the first electric cylinder is controlled to shorten. Then, the four cameras take pictures of the glass substrate respectively. Since the top surface of the first support platform is black, the scale will be imaged on the glass substrate, so the image of the scale will appear in the photographed glass substrate. The image processing module selects the photo in which the position of the glass substrate is closest to the center of the photo as the first photo. Specifically, the first photo can be determined according to the distances between the four sides of the glass substrate and the sides corresponding to the photo. For example, the absolute value of the distance difference corresponding to the two long sides and the absolute value of the distance difference corresponding to the two short sides are calculated, and the photo with the smallest sum is taken as the first photo. Then, the image processing module is used to obtain the scales corresponding to the four edges of the glass substrate in the first photo. The controller controls the corresponding second driving unit to drive the slider to move the corresponding scales, so that the four cameras are respectively moved to the corresponding edges of the glass substrate. Then, the four cameras are used to take pictures to obtain the glass. The photo at the edge of the substrate is taken as the second photo, and the first scale value L1, the second scale value L2, the third scale value L3 and the fourth scale value L4 corresponding to the first scale, the second scale, the third scale and the fourth scale at the edge of the glass substrate in the second photo are obtained by the image processing module. Since the first scale value L1, the second scale value L2, the third scale value L3 and the fourth scale value L4 are obtained by moving to the edge of the glass substrate, the error can be greatly reduced compared with the scale in the first photo. Then, based on the first scale value L1, the second scale value L2, the third scale value L3 and the fourth scale value L4, the error can be greatly reduced. The scale value L2, the third scale value L3 and the fourth scale value L4 are used to calculate the horizontal and vertical movement amounts of the lifting frame. The lifting frame is driven to move the horizontal movement amount by the first driving unit, and the vertical movement amount by the third electric cylinder, so that the second electric cylinder is located at the center of the glass substrate. The first electric cylinder is then extended to allow the suction cup assembly to re-absorb the glass substrate. The second electric cylinder is then extended to attach the label at the bottom of the second electric cylinder to the center of the glass substrate. At this time, the controller can control the four cameras to return to the initial position to facilitate finding the center of the next glass substrate.

[0016] From the above, it can be seen that the device can automatically find the center of the glass substrate, and then stick the label to the center of the glass substrate. Compared with the manual method of continuous measurement and calculation, it saves a lot of manual work, makes the operation more convenient and quick, and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is a front view of a lifting frame according to an embodiment of the present invention; Figure 2 It is a structural schematic diagram of a photographing unit according to an embodiment of the present invention; Figure 3 A top view of a top frame according to an embodiment of the present invention; Figure 4 is a top view of a glass substrate according to an embodiment of the present invention; Figure 5 It is a structural schematic diagram of a detection unit according to an embodiment of the present invention; Figure 6 for Figure 5 Enlarged view of the fifth electric cylinder.

[0019] 1. Top frame; 2. Moving frame; 3. First electric cylinder; 4. Lifting frame; 5. Suction cup assembly; 6. Second electric cylinder; 7. First supporting platform; 8. Third electric cylinder; 9. First scale; 10. Second scale; 11. Fourth scale; 12. Slider; 13. Camera; 14. Glass substrate; 15. Sixth electric cylinder; 16. Screw; 17. Motor; 18. Base frame; 19. Second supporting platform; 20. Support rod; 21. Laser rangefinder; 22. Fourth electric cylinder; 23. Support plate; 24. Fifth electric cylinder; 25. Pull rope; 26. Label. DETAILED DESCRIPTION

[0020] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0021] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0022] like Figures 1 to 4 As shown, a deflection detection device for a display glass substrate includes a top frame 1 and further includes: The mobile frame 2, the first driving unit, the first electric cylinder 3, the lifting frame 4, the suction cup assembly 5, the second electric cylinder 6, the first support platform 7, the camera unit, four second driving units, the image processing module and the controller, wherein: The mobile frame 2 is slidably connected to the top frame 1, the first driving part is transmission-connected to the mobile frame 2, and is used to drive the mobile frame 2 to move, a third electric cylinder 8 is provided on the top of the mobile frame 2, and a telescopic rod of the third electric cylinder 8 is provided on the side of the first electric cylinder 3; The first electric cylinder 3 is installed on the moving frame 2, the lifting frame 4 is arranged at the bottom of the first electric cylinder 3, and the suction cup assembly 5 is arranged at the bottom of the lifting frame 4; The second electric cylinder 6 is vertically arranged at the center of the bottom of the lifting frame 4; The photographing unit comprises a first scale 9, a second scale 10, a third scale and a fourth scale 11 arranged below the lifting frame 4, the first scale 9 and the second scale 10 are parallel to the long side of the lifting frame 4, the third scale and the fourth scale 11 are parallel to the short side of the lifting frame 4, the scales of the first scale 9, the second scale 10, the third scale and the fourth scale 11 are arranged on the bottom surface, and gradually increase from the center to the edge along the lifting frame 4, a slider 12 is arranged above the first scale 9, the second scale 10, the third scale and the fourth scale 11, a camera 13 is arranged at the bottom of the slider 12, and the camera 13 is staggered with the corresponding scale; The four second driving parts are respectively connected to the four sliders 12 for driving the sliders 12 to move; The first support platform 7 is used to place the glass substrate 14, and the top surface of the first support platform 7 is black; The four cameras 13 are initially close to one side of the center of the lifting frame 4, and the glass substrate 14 to be inspected is first transferred to the first support platform 7 through the suction cup assembly 5, and the first electric cylinder 3 is controlled to shorten. Then, the four cameras 13 take pictures of the glass substrate 14 respectively. Since the top surface of the first support platform 7 is black, the scale will be imaged on the glass substrate 14. The image processing module selects the photo of the glass substrate 14 closest to the center of the photo as the first photo, and obtains the scales corresponding to the four edges of the glass substrate 14 in the first photo. The controller controls the corresponding second driving part to drive the slider 12 to move the corresponding scales, so that the four cameras 13 are respectively moved to the corresponding edges of the glass substrate 14, and then the four cameras 13 take pictures. A photo of the edge of the glass substrate 14 is obtained as a second photo, and the first scale value L1, the second scale value L2, the third scale value L3 and the fourth scale value L4 corresponding to the first scale 9, the second scale 10, the third scale 11 and the fourth scale 11 at the edge of the glass substrate 14 in the second photo are obtained by the image processing module. The horizontal movement amount and the vertical movement amount of the lifting frame 4 are calculated based on the first scale value L1, the second scale value L2, the third scale value L3 and the fourth scale value L4. The lifting frame 4 is driven to move the horizontal movement amount by the first driving unit, and the lifting frame 4 is driven to move the vertical movement amount by the third electric cylinder 8, so that the second electric cylinder 6 is located at the center of the glass substrate 14, and the second electric cylinder 6 is used to attach the label 26.

[0023] When the detection device is working, the four cameras 13 are initially close to one side of the center of the lifting frame 4. At this time, the scales at which the four cameras 13 are located correspond to the 0 scale of the corresponding scale. The glass substrate 14 to be detected is first transferred to the first support platform 7 by the suction cup assembly 5, and the first electric cylinder 3 is controlled to shorten. Then, the four cameras 13 take pictures of the glass substrate 14 respectively. Since the top surface of the first support platform 7 is black, the scale will be imaged on the glass substrate 14, so the image of the scale will appear in the photographed glass substrate 14. The image processing module selects the photo of the glass substrate 14 closest to the center of the photo as the first Specifically, the first photo can be determined according to the distances between the four sides of the glass substrate 14 and the sides corresponding to the photos. For example, the absolute value of the distance difference corresponding to the two long sides and the absolute value of the distance difference corresponding to the two short sides are calculated, and the photo with the smallest sum is taken as the first photo. Then, the image processing module is used to obtain the scales corresponding to the four edges of the glass substrate 14 in the first photo, and the controller controls the corresponding second driving unit to drive the slider 12 to move the corresponding scales, so that the four cameras 13 are respectively moved to the corresponding edges of the glass substrate 14, and then the four cameras 13 are used to take photos to obtain the glass substrate 14. The photo at the edge of the substrate 14 is used as the second photo, and the first scale value L1, the second scale value L2, the third scale value L3 and the fourth scale value L4 corresponding to the first scale 9, the second scale 10, the third scale 11 at the edge of the glass substrate 14 in the second photo are obtained by the image processing module. Since the first scale value L1, the second scale value L2, the third scale value L3 and the fourth scale value L4 are obtained by moving to the edge of the glass substrate 14 and taking the photo, the error can be greatly reduced compared with the scale in the first photo. Then, based on the first scale value L1, the second scale value L2, the third scale value L3 and the fourth scale value L4, the error can be greatly reduced. , the third scale value L3 and the fourth scale value L4 are used to calculate the horizontal movement amount and the vertical movement amount of the lifting frame 4, the first driving unit drives the lifting frame 4 to move the horizontal movement amount, and the third electric cylinder 8 drives the lifting frame 4 to move the vertical movement amount, so that the second electric cylinder 6 is located at the center of the glass substrate 14, and then the first electric cylinder 3 is extended to make the suction cup assembly 5 re-absorb the glass substrate 14, and then the second electric cylinder 6 is extended to stick the label 26 at the bottom of the second electric cylinder 6 to the center of the glass substrate 14. At this time, the controller can control the four cameras 13 to return to the initial position, so as to find the center of the next glass substrate 14.

[0024] From the above, it can be seen that the device can automatically find the center of the glass substrate 14, and then stick the label 26 to the center of the glass substrate 14. Compared with the manual method of continuous measurement and calculation, a lot of manual work is saved, making the operation more convenient and quick, and improving work efficiency.

[0025] In some embodiments, the horizontal movement amount is calculated by the following formula: Horizontal movement = ,in: When L1 is greater than L2, S1=L1, and the first driving unit drives the lifting frame 4 to move horizontally toward one side of the first scale 9; When L1 is less than L2, S1=L2, and the first driving unit drives the lifting frame 4 to move horizontally toward one side of the second scale 10; Vertical movement = ,in: When L3 is greater than L4, S2=L3, and the third electric cylinder 8 drives the lifting frame 4 to move vertically toward one side of the third scale; When L3 is smaller than L4, S2=L4, and the third electric cylinder 8 drives the lifting frame 4 to move vertically toward one side of the fourth scale 11.

[0026] Through the above calculation method, it can be ensured that the horizontal movement amount and the vertical movement amount are always positive numbers. At the same time, by determining the size of L1 and L2, and the size of L3 and L4, the lifting frame 4 moves toward the side with a larger value, ensuring the correctness of the moving direction and ensuring that the lifting frame 4 moves toward the center of the glass substrate 14.

[0027] In some embodiments, the first driving part includes a sixth electric cylinder 15, which is installed on the top frame 1, and one end of the telescopic rod of the sixth electric cylinder 15 is arranged on the mobile frame 2. When working, the mobile frame 2 is driven to move back and forth on the top frame 1 by the extension or contraction of the sixth electric cylinder 15.

[0028] In some embodiments, the second driving part includes a screw rod 16 rotatably connected to the bottom of the lifting frame 4 , one end of the screw rod 16 is transmission-connected to a motor 17 , and the slider 12 is threadedly connected to the screw rod 16 .

[0029] During operation, the motor 17 drives the screw rod 16 to rotate, and the screw rod 16 drives the slider 12 to move, thereby driving the camera 13 to move along the screw rod 16 .

[0030] like Figure 5 As shown, in some embodiments, the device further includes a detection unit, which is disposed below the top frame 1 and detects the deflection of the glass substrate 14 based on the label 26 .

[0031] Optionally, the detection unit includes a base frame 18, a second support platform 19 is provided on the base frame 18, a support rod 20 is provided on the second support platform 19, the second support platform 19 has a first through groove, a laser rangefinder 21 is provided below the center of the first through groove, fourth electric cylinders 22 are provided on both sides of the laser rangefinder 21, a support plate 23 is provided on the top of the fourth electric cylinder 22, and a second through groove is provided on the support plate 23.

[0032] When the detection unit is used for detection, after the label 26 is pasted, the first electric cylinder 3 is shortened so that the glass substrate 14 on the first support platform 7 is re-adsorbed, and then the lifting frame 4 is controlled to move by the first driving unit and the third electric cylinder 8 so that the label 26 moves to the top of the laser rangefinder 21, and the first electric cylinder 3 is extended to support both sides of the glass substrate 14 through the support rod 20, and the glass substrate 14 is in a horizontal state through the support of the support plate 23, and then the suction cup assembly 5 releases the glass substrate 14, and the first electric cylinder 3 is shortened, and the first distance from the laser rangefinder 21 to the label 26 is obtained by the laser rangefinder 21, and then the fourth electric cylinder 22 is shortened so that the support plate 23 is separated from the glass substrate 14, and the glass substrate 14 bends under the action of its own gravity. After being stable, the second distance from the laser rangefinder 21 to the label 26 is obtained by the laser rangefinder 21, and the deflection of the glass substrate 14 is obtained by subtracting the second distance from the first distance.

[0033] like Figure 5 and Figure 6 As shown, in some embodiments, the device further comprises a tearing portion, which is arranged at the bottom of the lifting frame 4, and is used to tear off the label 26 attached to the glass substrate 14. Optionally, the tearing portion comprises a fifth electric cylinder 24 arranged on both sides of the second electric cylinder 6, a pull rope 25 is arranged on the telescopic rod of the fifth electric cylinder 24, a label 26 is arranged between the two pull ropes 25, and an adhesive layer is arranged at the bottom of the label 26.

[0034] When detected by the laser rangefinder 21, the pull rope 25 is in a relaxed state. When the label 26 needs to be torn off, the fourth electric cylinder 22 is extended so that the support plate 23 supports the glass substrate 14 again, and then the first electric cylinder 3 is extended, and the glass substrate 14 is adsorbed by the suction cup assembly 5. At this time, the second electric cylinder 6 is in a shortened state, and then the fifth electric cylinder 24 is shortened, and the label 26 is pulled by the pull rope 25, so that the label 26 is torn off the glass substrate 14. This is convenient to operate and can achieve the reuse of the label 26.

[0035] In order to further implement the present invention, the present invention also provides a detection method of a deflection detection device of a display glass substrate 14, comprising: Obtain the scales corresponding to the four edges of the glass substrate 14 in the first photo, and control the corresponding second driving part through the controller to drive the slider 12 to move the corresponding scales, so that the four cameras 13 are respectively moved to the corresponding edges of the glass substrate 14; Then, the four cameras 13 are used to take photos of the edge of the glass substrate 14 as the second photo, and the image processing module is used to obtain the first scale value L1, the second scale value L2, the third scale value L3 and the fourth scale value L4 corresponding to the first scale 9, the second scale 10, the third scale and the fourth scale 11 at the edge of the glass substrate 14 in the second photo respectively; The horizontal movement amount and the vertical movement amount of the lifting frame 4 are calculated based on the first scale value L1, the second scale value L2, the third scale value L3 and the fourth scale value L4, the lifting frame 4 is driven to move the horizontal movement amount by the first driving part, and the lifting frame 4 is driven to move the vertical movement amount by the third electric cylinder 8, so that the second electric cylinder 6 is located at the center of the glass substrate 14, the suction cup assembly 5 re-adsorbs the glass substrate 14, and the label 26 is attached by the second electric cylinder 6; After the label 26 is attached, the first electric cylinder 3 is shortened to re-adsorb the glass substrate 14 on the first support platform 7, and then the first driving unit and the third electric cylinder 8 are used to control the lifting frame 4 to move so that the label 26 is moved directly above the laser rangefinder 21. The first electric cylinder 3 is extended to support both sides of the glass substrate 14 through the support rod 20, and the glass substrate 14 is in a horizontal state through the support of the support plate 23. Then the suction cup assembly 5 releases the glass substrate 14, and the first electric cylinder 3 is shortened. The laser rangefinder 21 is used to detect and obtain a first distance from the laser rangefinder 21 to the tag 26, and then the fourth electric cylinder 22 is shortened to separate the support plate 23 from the glass substrate 14. The glass substrate 14 bends under the action of its own gravity. After stabilization, the laser rangefinder 21 is used to detect and obtain a second distance from the laser rangefinder 21 to the tag 26, and the deflection of the glass substrate 14 is obtained by subtracting the second distance from the first distance.

[0036] The above method can automatically find the center of the glass substrate 14, and then stick the label 26 to the center of the glass substrate 14. Compared with the manual method of continuous measurement and calculation, a lot of manual work is saved, making the operation more convenient and quick, and improving work efficiency.

[0037] It should be understood by those skilled in the art that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the above aspects of the present invention, which are not provided in detail for the sake of simplicity.

[0038] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A deflection detection device for a display glass substrate, comprising a top frame (1), It is characterized in that Also includes: A mobile frame (2), a first driving unit, a first electric cylinder (3), a lifting frame (4), a suction cup assembly (5), a second electric cylinder (6), a first support platform (7), a camera unit, four second driving units, an image processing module and a controller, wherein: The movable frame (2) is slidably connected to the top frame (1); the first driving part is drivingly connected to the movable frame (2) and is used to drive the movable frame (2) to move; a third electric cylinder (8) is provided on the top of the movable frame (2); and a telescopic rod of the third electric cylinder (8) is provided on the side of the first electric cylinder (3); The first electric cylinder (3) is mounted on the mobile frame (2), the lifting frame (4) is arranged at the bottom of the first electric cylinder (3), and the suction cup assembly (5) is arranged at the bottom of the lifting frame (4); The second electric cylinder (6) is vertically arranged at the center of the bottom of the lifting frame (4); The photographing unit comprises a first scale (9), a second scale (10), a third scale and a fourth scale (11) arranged below the lifting frame (4); the first scale (9) and the second scale (10) are parallel to the long side of the lifting frame (4); the third scale and the fourth scale (11) are parallel to the short side of the lifting frame (4); the scales of the first scale (9), the second scale (10), the third scale and the fourth scale (11) are arranged on the bottom surface and gradually increase from the center to the edge of the lifting frame (4); a slider (12) is arranged above the first scale (9), the second scale (10), the third scale and the fourth scale (11); a camera (13) is arranged at the bottom of the slider (12); the camera (13) is staggered with the corresponding scale; The four second driving parts are respectively connected to the four sliders (12) in a transmission manner, and are used to drive the sliders (12) to move; The first support platform (7) is used to place a glass substrate (14), and the top surface of the first support platform (7) is black; The four cameras (13) are initially close to one side of the center of the lifting frame (4). The glass substrate (14) to be inspected is first transferred to the first support platform (7) through the suction cup assembly (5), and the first electric cylinder (3) is controlled to shorten. Then, the four cameras (13) respectively take photos of the glass substrate (14). Since the top surface of the first support platform (7) is black, the scale will be imaged on the glass substrate (14). The image processing module selects the photo of the glass substrate (14) closest to the center of the photo as the first photo, obtains the scales corresponding to the four edges of the glass substrate (14) in the first photo, and controls the corresponding second driving part through the controller to drive the slider (12) to move the corresponding scales, so that the four cameras (13) are respectively moved to the corresponding edges of the glass substrate (14). Then, the four cameras (13) ) taking a photograph of the edge of the glass substrate (14) as a second photograph, obtaining the first scale value L1, the second scale value L2, the third scale value L3 and the fourth scale value L4 corresponding to the first scale (9), the second scale (10), the third scale and the fourth scale (11) at the edge of the glass substrate (14) in the second photograph through the image processing module, calculating and obtaining the horizontal movement amount and the vertical movement amount of the lifting frame (4) based on the first scale value L1, the second scale value L2, the third scale value L3 and the fourth scale value L4, driving the lifting frame (4) to move the horizontal movement amount through the first driving unit, and driving the lifting frame (4) to move the vertical movement amount through the third electric cylinder (8), so that the second electric cylinder (6) is located at the center of the glass substrate (14), and the second electric cylinder (6) is used for labeling (26).

2. The deflection detection device for a display glass substrate according to claim 1, It is characterized in that The horizontal movement amount is calculated by the following formula: Horizontal movement = ,in: When L1 is greater than L2, S1=L1, and the first driving unit drives the lifting frame (4) to move horizontally toward one side of the first scale (9); When L1 is smaller than L2, S1=L2, and the first driving unit drives the lifting frame (4) to move horizontally toward one side of the second scale (10); Vertical movement = ,in: When L3 is greater than L4, S2=L3, and the third electric cylinder (8) drives the lifting frame (4) to move vertically toward one side of the third scale; When L3 is smaller than L4, S2=L4, and the third electric cylinder (8) drives the lifting frame (4) to move a vertical amount toward one side of the fourth scale (11).

3. The deflection detection device for a display glass substrate according to claim 1, It is characterized in that The first driving part comprises a sixth electric cylinder (15), the sixth electric cylinder (15) is mounted on the top frame (1), and one end of the telescopic rod of the sixth electric cylinder (15) is arranged on the moving frame (2).

4. The deflection detection device for a display glass substrate according to claim 1, It is characterized in that The second driving part comprises a screw rod (16) rotatably connected to the bottom of the lifting frame (4), one end of the screw rod (16) is transmission-connected to a motor (17), and the slider (12) is threadedly connected to the screw rod (16).

5. The deflection detection device for a display glass substrate according to claim 1, It is characterized in that The device also includes a detection unit, which is arranged below the top frame (1) and detects the deflection of the glass substrate (14) based on the label (26).

6. The deflection detection device for a display glass substrate according to claim 5, It is characterized in that The detection unit comprises a base frame (18), a second support platform (19) is provided on the base frame (18), a support rod (20) is provided on the second support platform (19), the second support platform (19) has a first through slot, a laser rangefinder (21) is provided below the center of the first through slot, fourth electric cylinders (22) are provided on both sides of the laser rangefinder (21), a support plate (23) is provided on the top of the fourth electric cylinder (22), and a second through slot is provided on the support plate (23).

7. The deflection detection device for a display glass substrate according to claim 6, It is characterized in that The device also includes a tearing portion, which is arranged at the bottom of the lifting frame (4) and is used to tear off a label (26) attached to the glass substrate (14).

8. The deflection detection device for a display glass substrate according to claim 7, It is characterized in that The tearing portion comprises a fifth electric cylinder (24) arranged on both sides of the second electric cylinder (6), a pull rope (25) is provided on the telescopic rod of the fifth electric cylinder (24), a label (26) is provided between the two pull ropes (25), and an adhesive layer is provided at the bottom of the label (26).

9. A method for detecting a deflection detection device for a display glass substrate according to claim 6, It is characterized in that include: Obtaining scales corresponding to four edges of the glass substrate (14) in the first photo, and controlling the corresponding second driving unit through a controller to drive the slider (12) to move the corresponding scales, so that the four cameras (13) are respectively moved to the corresponding edges of the glass substrate (14); Then, a photograph of the edge of the glass substrate (14) is obtained by using the four cameras (13) as a second photograph, and a first scale value L1, a second scale value L2, a third scale value L3 and a fourth scale value L4 corresponding to the first scale (9), the second scale (10), the third scale and the fourth scale (11) at the edge of the glass substrate (14) in the second photograph are obtained by using the image processing module; The horizontal movement amount and the vertical movement amount of the lifting frame (4) are calculated based on the first scale value L1, the second scale value L2, the third scale value L3 and the fourth scale value L4, the lifting frame (4) is driven to move the horizontal movement amount by the first driving unit, and the lifting frame (4) is driven to move the vertical movement amount by the third electric cylinder (8), so that the second electric cylinder (6) is located at the center of the glass substrate (14), the suction cup assembly (5) re-adsorbs the glass substrate (14), and the label (26) is attached by the second electric cylinder (6); After the label (26) is pasted, the first electric cylinder (3) is shortened so that the glass substrate (14) on the first support platform (7) is re-adsorbed, and then the lifting frame (4) is controlled to move by the first driving unit and the third electric cylinder (8) so that the label (26) moves to the top of the laser rangefinder (21), and the first electric cylinder (3) is extended to support both sides of the glass substrate (14) through the support rod (20), and the glass substrate (14) is in a horizontal state through the support of the support plate (23), and then the suction cup assembly (5) releases the glass substrate (14), and the first electric cylinder (3) is shortened; A first distance from the laser rangefinder (21) to the tag (26) is obtained by detection through the laser rangefinder (21), and then the fourth electric cylinder (22) is shortened to separate the support plate (23) from the glass substrate (14). The glass substrate (14) bends under the action of its own gravity. After stabilization, a second distance from the laser rangefinder (21) to the tag (26) is obtained by detection through the laser rangefinder (21), and the deflection of the glass substrate (14) is obtained by subtracting the second distance from the first distance.

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