Method for off-line detection and automatic judgment of stripes and defects of liquid crystal glass substrate

Abstract

The invention discloses an off-line detection and automatic judgment method for stripes and defects of a liquid crystal glass substrate, which comprises a mounting bottom plate, a curtain, a feeding cylinder, a pneumatic sucker and a detection fixing mechanism. When the detection fixing mechanism is used, the pneumatic sucker is driven by the feeding cylinder to adsorb and lift the glass substrate on a feeding frame; then mechanical clamping jaws are driven by a fixed air cylinder to be close to the glass substrate between the detection frames, the glass substrate between the detection frames is clamped through the multiple mechanical clamping jaws, and meanwhile, adsorption of the glass substrate is released through a pneumatic suction cup; a first driving motor on the fixed side plate drives the detection frame to rotate, so that the detection frame and the glass substrate are vertically arranged, and a xenon lamp irradiates the glass substrate and is matched with a curtain, so that the detection device body can conveniently perform imaging detection on the glass substrate; by arranging the feeding air cylinder and the detection fixing mechanism, automatic detection of the glass substrate is achieved, the detection efficiency is improved, and the accuracy of the detection result is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of glass detection, and in particular to a method for offline detection and automatic determination of stripes and defects on a liquid crystal glass substrate. Background Art

[0002] As an indispensable part of the development of global displays, the quality of substrate glass is one of the key factors restricting the development of displays. The stripes of glass are an important indicator of glass quality. It is a relatively common uniformity defect in glass substrates. In terms of physical nodule energy changes, many problems are attributed to the appearance of stripes. Therefore, it is crucial to accurately determine the stripe position after glass testing and feedback to the manufacturing department for optimization to improve product quality.

[0003] The traditional offline stripe detection method has certain limitations. Generally, the stripe visual detection is carried out after the sample is removed manually. The inspection is affected by vision and subjective factors, resulting in differences in the inspection results of different personnel, which leads to disputes and inaccurate inspection results. Summary of the invention

[0004] The purpose of the method of the present invention is to overcome the shortcomings of the prior art. The method is a method for offline detection and automatic determination of stripes and defects on a liquid crystal glass substrate, which solves the problem that the detection results of stripes on a glass substrate are controversial and inaccurate.

[0005] The technical problem to be solved by the present invention can be achieved by the following technical solutions:

[0006] A method for offline detection and automatic determination of liquid crystal glass substrate stripes and defects comprises the following steps:

[0007] Step 1: The pneumatic suction cup is driven by the loading cylinder to absorb and lift the glass substrate on the loading rack, and then the driving frame, loading cylinder, pneumatic suction cup and glass substrate are transported to the top of the detection frame as a whole through the driving component 1, and the glass substrate between the detection frames is clamped by multiple mechanical clamps.

[0008] Step 2: The xenon lamp is used to illuminate the glass substrate and cooperate with the curtain to facilitate the detection device body to perform imaging detection on the glass substrate. The fixed cylinders on one of the four sides of the detection frame are loosened in turn, so that the detection device body can perform imaging detection on the edge of the glass substrate in turn. At the same time, the detection device body can be driven to rotate by the driving motor 2, so that the glass substrate can be imaged from multiple angles. After the detection data graphs at each angle are fully collected, the detection device body stops detection.

[0009] Step 3: Transmit the detection data graph to the control system in real time. After receiving the data graph, the control system sends an analysis and determination task. The calculation and analysis system statistically analyzes and sorts out the detection data graph based on the data graphs in the database. After receiving the analysis result, the control system issues an instruction again. If it is determined to be qualified, record the detection result and end the detection; if the determination result is unqualified, give an alarm reminder and display the defect coordinates or stripe status and the visible angle by visual inspection.

[0010] As a further solution of the present invention: install a mounting base plate. One side of the mounting base plate is fixedly connected with a vertically arranged vertical fixing frame. A curtain is fixedly installed on the vertical fixing frame. Above the other side of the mounting base plate, a driving frame is arranged. Symmetrically arranged and fixedly connected to the bottom surface of the driving frame are feeding cylinders. The driving end of the feeding cylinder is fixedly connected with a telescopic rod, and the lower end of the telescopic rod is fixedly connected with a pneumatic suction cup.

[0011] The detection fixing mechanism includes a mechanism base frame. The mechanism base frame is slidably arranged on the mounting base plate. The upper end of the mechanism base frame is fixedly connected with a transfer frame. Symmetrically arranged and fixedly connected to the transfer frame are fixed side plates. A detection frame is rotatably connected between the symmetrically arranged fixed side plates. Installation grooves are respectively arranged on the outer sides of the detection frames, and fixed through grooves are arranged on the inner sides of the detection frames. The installation grooves are communicated with the fixed through grooves. A fixed cylinder is fixedly connected to the installation groove. The driving end of the fixed cylinder is fixedly connected with a mechanical claw. Detection device bodies are symmetrically arranged on the lower end surface of the detection frame.

[0012] As a further solution of the present invention: it further includes a calculation and analysis system for comparing and detecting imaging data and a control system for collecting and transmitting imaging data.

[0013] As a further solution of the present invention: both ends of the detection frame are fixedly connected with a first rotating shaft. A first bearing is fixedly connected through embedding in the fixed side plate. The outer ring of the first bearing is fixedly connected through embedding in the fixed side plate, and the first rotating shaft is sleeved and fixedly connected to the inner ring of the first bearing.

[0014] As a further solution of the present invention: transfer plates are respectively arranged at both ends of the detection device body. The transfer plates are fixedly connected with the detection frame. A second bearing is fixedly connected through embedding in the transfer plate. Both ends of the detection device body are fixedly connected with a second rotating shaft. The outer ring of the second bearing is fixedly connected through embedding in the transfer plate, and the second rotating shaft is sleeved and fixedly connected to the inner ring of the second bearing.

[0015] As a further solution of the present invention: a first driving motor is fixedly installed on the fixed side plate. The driving end of the first driving motor is coaxially fixedly connected with a first driving shaft, and the first driving shaft is coaxially fixedly connected with the first rotating shaft.

[0016] As a further solution of the present invention: the second driving motor is fixedly installed on the adapter plate, the driving end of the second driving motor is coaxially fixedly connected with the second driving shaft, and the second driving shaft is coaxially fixedly connected with the second rotating shaft.

[0017] As a further solution of the present invention: a driving component 1 for driving the driving frame to move is arranged on the driving frame.

[0018] As a further solution of the present invention: a driving component 2 for driving the mechanism chassis to slide on the mounting base plate is arranged on the mounting base plate.

[0019] As a further solution of the present invention: the detection frame is a square frame, eight fixed cylinders are provided, and two fixed cylinders are provided on each of the four sides of the detection frame.

[0020] Beneficial effects of the present invention:

[0021] 1. When the present invention is in use, since a driving component 1 for driving the driving frame to move is provided on the driving frame, the driving frame can be driven by the driving component 1, since a telescopic rod is provided on the driving end of the feeding cylinder on the driving frame, and a pneumatic suction cup is provided at the lower end of the telescopic rod, the pneumatic suction cup can be driven by the feeding cylinder to absorb and lift the glass substrate on the feeding frame, and then the driving frame, the feeding cylinder, the pneumatic suction cup and the glass substrate are transported as a whole to the top of the detection fixing mechanism by the driving component 1, and the glass substrate is placed between the detection frames by adjusting the feeding cylinder, and since a fixed through groove is provided on the inner end surface of the detection frame, a mounting groove connected to the fixed through groove is provided on the outer end surface of the detection frame. , and a fixed cylinder is arranged in the mounting groove, and a mechanical clamp is arranged on the driving end of the fixed cylinder. The mechanical clamp is driven by the fixed cylinder so that the mechanical clamp is close to the glass substrate between the detection frames, and the glass substrate between the detection frames is clamped by multiple mechanical clamps, and at the same time, the pneumatic suction cup releases the adsorption of the glass substrate, and the driving motor on the fixed side panel drives the detection frame to rotate so that the detection frame and the glass substrate are arranged vertically, and the glass substrate is illuminated by the xenon lamp and cooperated with the curtain to facilitate the detection device body to perform imaging detection on the glass substrate. The automatic detection of the glass substrate is realized by setting the feeding cylinder and the detection fixing mechanism, which is conducive to improving the detection efficiency and the accuracy of the detection results;

[0022] 2. The detection frame of the present invention is a square frame, and eight fixed cylinders are provided. Two fixed cylinders are provided on the four sides of the detection frame. When performing imaging detection on the glass substrate on the detectable frame, the fixed cylinder on one of the four sides of the detection frame can be loosened in turn, so that the detection device body can perform imaging detection on the edge of the glass substrate in turn, which is beneficial to further ensure the comprehensiveness and accuracy of the detection results. At the same time, the detection device body can be driven to rotate by driving motor 2, so that the glass substrate can be imaged at multiple angles, further ensuring the accuracy of the imaging results. A driving component 2 for driving the chassis of the mechanism to slide on the mounting base is provided on the mounting base, so that the distance between the glass substrate and the curtain can be adjusted according to factors such as the light transmittance and thickness of the glass substrate, which is beneficial to further improve the imaging effect of the glass substrate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below in conjunction with the accompanying drawings.

[0024] Figure 1 is a flow chart of the method of the present invention;

[0025] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention;

[0026] Figure 3 It is a schematic diagram of the forward structure of the present invention;

[0027] Figure 4 It is a schematic diagram of the three-dimensional structure of the detection and fixing mechanism of the present invention;

[0028] Figure 5 The present invention Figure 4 Enlarged structural diagram at A in the middle.

[0029] In the figure: 1. Installation base plate; 2. Vertical fixing frame; 3. Curtain; 4. Driving frame; 5. Feeding cylinder; 6. Telescopic rod; 7. Pneumatic suction cup; 8. Detection fixing mechanism; 81. Mechanism base frame; 82. Adapter frame; 83. Fixed side plate; 84. Driving motor 1; 85. Detection frame; 86. Installation slot; 87. Fixed cylinder; 88. Fixed through slot; 89. Mechanical gripper; 810. Adapter plate; 811. Detection device body; 812. Driving motor 2. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] like Figure 1-Figure 4 As shown, a method for offline detection and automatic determination of stripes and defects on a liquid crystal glass substrate comprises the following steps:

[0032] Step 1: The pneumatic suction cup 7 is driven by the loading cylinder 5 to absorb and lift the glass substrate on the loading rack, and then the driving frame 4, the loading cylinder 5, the pneumatic suction cup 7 and the glass substrate are transported as a whole to the top of the detection frame 85 through the driving component 1, and the glass substrate between the detection frames 85 is clamped by multiple mechanical clamps 89.

[0033] Step 2: The xenon lamp is used to illuminate the glass substrate and the curtain 3 is used to facilitate the detection device body 811 to perform imaging detection on the glass substrate. The fixed cylinder 87 on one of the four sides of the detection frame 85 is loosened in turn, so that the detection device body 811 can perform imaging detection on the edge of the glass substrate in turn. At the same time, the detection device body can be driven to rotate by the driving motor 2 812, so that the glass substrate can be imaged from multiple angles. After the detection data graphs at each angle are fully collected, the detection device body 811 stops the detection.

[0034] Step 3: The detection data graph is transmitted to the control system in real time. After receiving the data graph, the control system sends an analysis and judgment task. The calculation and analysis system statistically analyzes and organizes the detection data graph according to the data graph in the database. After receiving the analysis result, the control system issues a command again, judges it as qualified, records the detection result, and ends the detection; if the result is judged to be unqualified, an alarm will be issued and the defect coordinates or stripe status and visually visible angle will be displayed.

[0035] A device for offline detection and automatic determination of stripes and defects on a liquid crystal glass substrate, comprising:

[0036] A mounting base plate 1 is provided, a vertical fixing frame 2 is fixedly connected to one side of the mounting base plate 1, a curtain 3 is fixedly installed on the vertical fixing frame 2, a driving frame 4 is provided above the other side of the mounting base plate 1, a feeding cylinder 5 is symmetrically arranged and fixedly connected to the bottom surface of the driving frame 4, a lifting and retracting rod 6 is fixedly connected to the driving end of the feeding cylinder 5, and a pneumatic suction cup 7 is fixedly connected to the lower end of the lifting and retracting rod 6;

[0037] The detection fixing mechanism 8 includes a mechanism base frame 81, which is slidably set on the installation base plate 1. The upper end of the mechanism base frame 81 is fixedly connected to an adapter frame 82, and fixed side plates 83 are symmetrically set and fixedly connected to the adapter frame 82. A detection frame 85 is rotatably connected between the symmetrically set fixed side plates 83. The outer sides of the detection frames 85 are provided with installation grooves 86, and the inner sides of the detection frames 85 are provided with fixed through grooves 88. The installation grooves 86 are connected to the fixed through grooves 88. A fixed cylinder 87 is fixedly connected to the installation groove 86, and a mechanical clamp 89 is fixedly connected to the driving end of the fixed cylinder 87. The detection device body 811 is symmetrically set on the lower end surface of the detection frame 85.

[0038] In some specific embodiments, the device further comprises a computing and analyzing system for performing comparative detection on the imaging data and a control system for collecting and transmitting the imaging data.

[0039] Both ends of the detection frame 85 are fixedly connected with a rotating shaft 1, and a bearing 1 is embedded through and fixedly connected to the fixed side plate 83. The outer ring of the bearing 1 is embedded through and fixedly connected to the fixed side plate 83, and the rotating shaft is set and fixedly connected to the inner ring of the bearing 1.

[0040] An adapter plate 810 is provided at both ends of the detection device body 811, and the adapter plate 810 is fixedly connected to the detection frame 85. A second bearing is embedded through the adapter plate 810. A second rotating shaft is fixedly connected at both ends of the detection device body 811. The outer ring of the second bearing is embedded through and fixedly connected to the adapter plate 810, and the second rotating shaft is sleeved on and fixedly connected to the inner ring of the second bearing.

[0041] The driving motor 1 84 is fixedly mounted on the fixed side plate 83 , and the driving end of the driving motor 1 84 is coaxially fixedly connected with the driving shaft 1 , and the driving shaft 1 is coaxially fixedly connected with the rotating shaft.

[0042] The second driving motor 812 is fixedly connected to the adapter plate 810 , and the driving end of the second driving motor 812 is fixedly connected to the second driving shaft, and the second driving shaft is coaxially fixedly connected to the second rotating shaft.

[0043] In some specific implementations, four feeding cylinders 5 are provided.

[0044] In some specific embodiments, a driving component 1 for driving the driving frame 4 to move is provided on the driving frame 4. The driving component 1 is a driving component composed of multiple pneumatic telescopic rods, which is convenient for driving the driving frame 4 to move in multiple directions, thereby facilitating driving the loading cylinder 5 and the pneumatic suction cup 7 on the driving frame 4 to adsorb and transport the glass panel, thereby completing the loading of the glass panel.

[0045] In some specific embodiments, a driving component 2 is provided on the mounting base plate 1 for driving the mechanism base frame 81 to slide on the mounting base plate 1 , and the driving component 2 is a pneumatic telescopic rod.

[0046] In some specific embodiments, the detection frame 85 is a square frame, eight fixed cylinders 87 are provided, and two fixed cylinders 87 are provided on each of the four sides of the detection frame 85 .

[0047] In order to facilitate the understanding of the embodiments of this solution by those skilled in the art, the working principle of this solution is briefly described in combination with specific application scenarios:

[0048] When in use, since the driving frame 4 is provided with a driving component 1 for driving the driving frame 4 to move, the driving frame 4 can be driven by the driving component 1, and since the driving end of the feeding cylinder 5 on the driving frame 4 is provided with a telescopic rod 6, and the lower end of the telescopic rod 6 is provided with a pneumatic suction cup 7, the pneumatic suction cup 7 is driven by the feeding cylinder 5 to absorb and lift the glass substrate on the feeding frame, and then the driving frame 4, the feeding cylinder 5, the pneumatic suction cup 7 and the glass substrate are transported as a whole to the top of the detection fixing mechanism 8 by the driving component 1, and the glass substrate is placed between the detection frames 85 by adjusting the feeding cylinder 5. A fixed through slot 88 is provided on the side end surface, and a mounting slot 86 connected to the fixed through slot 88 is provided on the outer end surface of the detection frame 85, and a fixed cylinder 87 is provided in the mounting slot 86, and a mechanical clamp 89 is provided on the driving end of the fixed cylinder 87. The mechanical clamp 89 is driven by the fixed cylinder 87 so that the mechanical clamp 89 is close to the glass substrate between the detection frames 85, and the glass substrate between the detection frames 85 is clamped by a plurality of mechanical clamps 89. At the same time, the pneumatic suction cup 7 releases the adsorption of the glass substrate, and the driving motor 84 on the fixed side plate 83 drives the detection frame 85 to rotate so that the detection frame 85 and the glass substrate are arranged vertically, and the xenon lamp is used to illuminate the glass substrate and cooperate with the curtain 3 to facilitate the detection device body 811 to perform imaging detection on the glass substrate. By setting the feeding cylinder 5 and the detection fixing mechanism 8, the automatic detection of the glass substrate is realized, which is conducive to improving the detection efficiency and the accuracy of the detection result. The detection frame 85 is a square frame, and eight fixed cylinders 87 are arranged. Two fixed cylinders 87 are arranged on the four sides of the detection frame 85. When the glass substrate on the detectable frame 85 is imaged and detected, the fixed cylinder 87 on one of the four sides of the detection frame 85 can be loosened in turn. The detection device body 811 is open, so that it is convenient for the detection device body 811 to perform imaging detection on the edge of the glass substrate in turn, which is beneficial to further ensure the comprehensiveness and accuracy of the detection result. At the same time, the detection device body can be driven to rotate by the second driving motor 812, so that the glass substrate can be imaged at multiple angles, which further ensures the accuracy of the imaging result. The installation base plate 1 is provided with a driving component 2 for driving the mechanism base frame 81 to slide on the installation base plate 1, so that the distance between the glass substrate and the curtain 3 can be adjusted according to factors such as the light transmittance and thickness of the glass substrate, which is beneficial to further improve the imaging detection effect of the glass substrate.

[0049] Several embodiments of the present invention are described in detail above, but the embodiments of the present invention are not limited thereto and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A method for offline detection and automatic determination of liquid crystal glass substrate stripes and defects, characterized in that: The steps include: S1: The pneumatic suction cup (7) is driven by the loading cylinder (5) to absorb and lift the glass substrate on the loading rack, and then the driving frame (4), the loading cylinder (5), the pneumatic suction cup (7) and the glass substrate are transported as a whole to the top of the detection frame (85) by the driving component 1, and the glass substrate between the detection frames (85) is clamped by a plurality of mechanical clamps (89); S2: The xenon lamp is used to illuminate the glass substrate and the curtain (3) is used to facilitate the detection device body (811) to perform imaging detection on the glass substrate. The fixed cylinder (87) on one of the four sides of the detection frame (85) is sequentially loosened, so that the detection device body (811) can sequentially perform imaging detection on the edge of the glass substrate. At the same time, the detection device body can be driven to rotate by the second driving motor (812), so that the glass substrate can be imaged from multiple angles. After the detection data graphs of each angle are fully collected, the detection device body (811) stops detection; S3: The detection data graph is transmitted to the control system in real time. After receiving the data graph, the control system sends an analysis and judgment task. The calculation and analysis system statistically analyzes and organizes the detection data graph according to the data graph in the database. After receiving the analysis result, the control system issues a command again, determines that it is qualified, records the detection result, and the detection ends; if the result is determined to be unqualified, an alarm is issued and the defect coordinates or stripe status and visually visible angle are displayed.

2. A device for offline detection and automatic determination of liquid crystal glass substrate stripes and defects, used to implement the method for offline detection and automatic determination of liquid crystal glass substrate stripes and defects as claimed in claim 1, characterized in that: include: A mounting base plate (1) is fixedly connected to one side of the mounting base plate (1) with a vertically arranged vertical fixing frame (2), a curtain (3) is fixedly installed on the vertical fixing frame (2), a driving frame (4) is arranged above the other side of the mounting base plate (1), a feeding cylinder (5) is symmetrically arranged and fixedly connected to the bottom surface of the driving frame (4), a lifting and retracting rod (6) is fixedly connected to the driving end of the feeding cylinder (5), and a pneumatic suction cup (7) is fixedly connected to the lower end of the lifting and retracting rod (6); The detection fixing mechanism (8) comprises a mechanism base frame (81), the mechanism base frame (81) is slidably arranged on the installation base plate (1), the upper end of the mechanism base frame (81) is fixedly connected with an adapter frame (82), the adapter frame (82) is symmetrically arranged and fixedly connected with a fixed side plate (83), a detection frame (85) is rotatably connected between the symmetrically arranged fixed side plates (83), the outer side of the detection frame (85) is provided with a mounting groove (86), the inner side of the detection frame (85) is provided with a fixed through groove (88), the mounting groove (86) and the fixed through groove (88) are connected, the mounting groove (86) is fixedly connected with a fixed cylinder (87), the driving end of the fixed cylinder (87) is fixedly connected with a mechanical clamp (89), and the lower end surface of the detection frame (85) is symmetrically provided with a detection device body (811).

3. The method for offline detection and automatic determination of liquid crystal glass substrate stripes and defects according to claim 2, characterized in that: It also includes a computing and analyzing system for performing comparative detection on the imaging data and a control system for collecting and transmitting the imaging data.

4. The method for offline detection and automatic determination of liquid crystal glass substrate stripes and defects according to claim 2, characterized in that: Both ends of the detection frame (85) are fixedly connected with a rotating shaft 1, and a bearing 1 is penetrated, embedded and fixedly connected to the fixed side plate (83). The outer ring of the bearing 1 is penetrated, embedded and fixedly connected to the fixed side plate (83), and the rotating shaft is sleeved and fixedly connected to the inner ring of the bearing 1.

5. The method for offline detection and automatic determination of liquid crystal glass substrate stripes and defects according to claim 2, characterized in that: An adapter plate (810) is provided at both ends of the detection device body (811), the adapter plate (810) is fixedly connected to the detection frame (85), a second bearing is embedded through the adapter plate (810), and a second rotating shaft is fixedly connected to both ends of the detection device body (811), the outer ring of the second bearing is embedded through and fixedly connected to the adapter plate (810), and the second rotating shaft is sleeved on and fixedly connected to the inner ring of the second bearing.

6. The method for offline detection and automatic determination of liquid crystal glass substrate stripes and defects according to claim 4, characterized in that: The driving motor 1 (84) is fixedly mounted on the fixed side plate (83), and the driving end of the driving motor 1 (84) is coaxially fixedly connected with the driving shaft 1, and the driving shaft 1 is coaxially fixedly connected with the rotating shaft.

7. The method for offline detection and automatic determination of liquid crystal glass substrate stripes and defects according to claim 5, characterized in that: The second driving motor (812) is fixedly mounted on the adapter plate (810), and the driving end of the second driving motor (812) is coaxially fixedly connected with the second driving shaft, and the second driving shaft is coaxially fixedly connected with the second rotating shaft.

8. The method for offline detection and automatic determination of liquid crystal glass substrate stripes and defects according to claim 2, characterized in that: A driving component 1 for driving the driving frame (4) to move is arranged on the driving frame (4).

9. The method for offline detection and automatic determination of liquid crystal glass substrate stripes and defects according to claim 2, characterized in that: A driving assembly 2 for driving the mechanism base frame (81) to slide on the mounting base plate (1) is arranged on the mounting base plate (1).

10. The method for offline detection and automatic determination of liquid crystal glass substrate stripes and defects according to claim 2, characterized in that: The detection frame (85) is a square frame, and eight fixed cylinders (87) are provided. Two fixed cylinders (87) are provided on each of the four sides of the detection frame (85).

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