Multifunctional Mini LED backboard glass detection device and technology

Abstract

The invention discloses a multifunctional Mini LED backboard glass detection device and process. The multifunctional Mini LED backboard glass detection device comprises a frame, one side edge of the frame is rotatably connected with a rotating shaft, the rotating shaft is parallel to the side edge of the frame, the rotating shaft is connected with a first motor, the rotating shaft is fixedly connected with a lamp box, and a lamp tube is installed in the lamp box; a supporting column is further rotationally connected to the side edge of the frame, the supporting column is perpendicular to the side edge of the frame, a second motor is installed on the supporting column, the second motor is in key connection with the side edge of the frame, and the second motor drives the frame to rotate so that the frame can be switched between the horizontal state and the vertical state; the frame is composed of telescopic plates, a circle of glass adsorption mechanisms are arranged on one side face of the frame, and glass edge detection mechanisms are arranged at the four corners of the frame respectively. Glass can be prevented from being broken in the off-line detection process, the size of the frame is adjusted through the glass edge detection mechanism and the telescopic plate, the size of the frame is matched with the size of remodeled ultra-thin glass, and adsorption and subsequent detection of the glass are facilitated.

Description

Technical Field

[0001] The present invention relates to the field of glass technology, and in particular to a multifunctional Mini LED backplane glass detection device and process. Background Art

[0002] The existing offline glass inspection device usually clamps the glass by clamping the lower edge or upper edge of the glass to fix the finished glass. However, this way of clamping the glass, on the one hand, is easy to cause tilting when clamping ultra-thin large glass, and then generates two opposite forces on the glass, causing the glass to break; on the other hand, when rotating the glass for inspection (such as zebra angle inspection), the clamping of the upper and lower edges will cause the glass to shake, which is easy to break for ultra-thin glass, posing a threat to the safety of the inspectors. At the same time, for the large-scale and ultra-thin ultra-thin glass, the existing offline inspection clamping device cannot adapt to the size of the glass, and cannot stably clamp large ultra-thin glass. During production, after the glass is changed, it cannot quickly adapt to the large ultra-thin glass after the glass is inspected.

[0003] Existing ultra-thin glass not only requires a point light source to detect zebra corners, but also requires accurate detection of point defects in ultra-thin glass. The existing accurate detection method first requires cutting the ultra-thin glass through a CNC automatic cutting machine, which can easily cause defects such as abrasions and scratches during the placement and picking up of the ultra-thin glass; after cutting into small pieces, point defects are accurately detected in a darkroom. Since ultra-thin glass is prone to scratches, cracks, and breakage during transportation, this process for detecting ultra-thin glass can easily produce new defects, resulting in misjudgment and wrong defects during detection, which reduces product quality, increases costs, and reduces yields, causing trouble for companies.

[0004] In addition, the existing stripe detection device cannot compare and analyze the projections of glass at multiple angles, and it is not easy to distinguish the brightness of the stripes at a certain angle. Summary of the invention

[0005] The technical problem to be solved by the present invention is: to overcome the shortcomings of the prior art and provide a multifunctional Mini LED back panel glass detection device and process, in which the glass is adsorbed by a glass adsorption mechanism to make the large ultra-thin glass more stable, thereby avoiding glass breakage and safety problems caused by glass breakage during offline detection; at the same time, the frame size can be adjusted through the glass edge detection mechanism and the telescopic plate to adapt to the size of the ultra-thin glass after the replacement, thereby facilitating the adsorption and subsequent detection of the glass.

[0006] The technical solution of the present invention is: On the one hand, the present invention provides a multifunctional Mini LED back panel glass detection device, including a frame, a rotating shaft is rotatably connected to one side of the frame, the rotating shaft is arranged parallel to the side of the frame, and the rotating shaft is connected to a motor 1, and a light box is fixedly connected to the rotating shaft, and a lamp tube is installed in the light box; a support column is also rotatably connected to the side of the frame, the support column is perpendicular to the side of the frame, and a motor 2 is installed on the support column, and the motor 2 is key-connected to the side of the frame, and the motor 2 drives the frame to rotate so that it switches between a horizontal state and a vertical state; the frame is composed of a telescopic plate, a circle of glass adsorption mechanism is arranged on one side of the frame, and glass edge detection mechanisms are respectively arranged at the four corners of the frame. When the frame is in a horizontal state, the telescopic plate is telescoped to change the size of the frame until the glass edge detection mechanism detects the edge of the glass below, and the telescopic plate stops telescoping, and the glass adsorption mechanism adsorbs the glass below.

[0007] Preferably, the telescopic plate includes an upper base plate, a lower base plate, a left base plate and a right base plate, and hydraulic cylinder one and hydraulic cylinder two are respectively installed at the two ends of the upper base plate and the lower base plate, and the cylinder bottoms of hydraulic cylinder one and hydraulic cylinder two are respectively connected to the upper base plate and the lower base plate; one end of the left base plate and the right base plate are respectively connected to the piston rod of hydraulic cylinder one at the two ends of the upper base plate, and the other end is respectively connected to the piston rod of hydraulic cylinder three and the cylinder bottom of hydraulic cylinder three is connected to the piston rod of hydraulic cylinder two.

[0008] Preferably, the glass adsorption mechanism is a vacuum suction cup.

[0009] Preferably, a connecting plate is installed on the side of the frame, and the connecting plate is connected to a support column, and the support column is arranged perpendicular to the side of the frame; a second motor is installed on the support column, and the second motor is key-connected to the connecting plate and the drive shaft of the second motor is rotatably connected to the support column through a bearing, so that the frame is rotatably connected to the support column.

[0010] Preferably, a base is provided at the bottom of the support column, and a motor three is provided on the base, and a driving shaft of the motor three is vertically arranged upward and connected to the bottom of the support column; a slide projector is placed on one side of the frame where the glass is adsorbed, and a screen is placed on the other side, and a camera is installed on the side of the frame facing away from the glass. The point light source of the slide projector illuminates the glass, and the stripe defects and glass rib defects of the glass are displayed on the screen. The camera takes a picture of the image on the screen and compares it with the stripe defect and glass rib defect sample pictures in the control system to determine the levels of the glass stripes and glass ribs.

[0011] Preferably, an annular slide is provided on the upper surface of the base, a plurality of support legs are provided on the support column, universal wheels are provided at the bottom of the support legs, and the universal wheels are placed in the annular slide.

[0012] Preferably, a focusing sleeve is provided on the slide projector.

[0013] On the other hand, the present invention provides a process for inspecting Mini LED backplane glass using the above-mentioned multifunctional Mini LED backplane glass detection device. The initial state of the frame is horizontal, and the sampled glass is transported to the bottom of the frame. The edge of the glass below is detected by the glass edge detection mechanism. If not detected, the control system controls the start of hydraulic cylinder one, hydraulic cylinder two and hydraulic cylinder three to change the size of the frame until the glass edge detection mechanism detects the edge of the glass below; then the vacuum suction cup absorbs and fixes the glass below, and then, driven by motor two, the frame is switched to a vertical state; the control system turns on the lamp tube to illuminate the edge of the glass, and first observes and detects defects on the edge of the glass; after the detection is completed, the control system controls the start of motor one to rotate the lamp tube, change the angle of light irradiated by the lamp tube on the glass surface, and detect defects on the front of the glass, thereby realizing defect detection on the front and sides of the glass sample.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention uses a glass adsorption mechanism to replace the existing glass clamping method, making large ultra-thin glass more stable, avoiding glass breakage and safety problems caused by glass breakage during offline detection. At the same time, after the ultra-thin glass is changed, the device of the present invention can timely detect the size of the ultra-thin glass after the change through the glass edge detection mechanism, and then control the extension and contraction of the telescopic plate to adjust the frame size, so as to adapt to the size of the ultra-thin glass after the change, which is convenient for glass adsorption and subsequent detection.

[0015] 2. The device of the present invention can use the rotating shaft and the motor to make the lamp illuminate the edge and front of the glass, and can change the angle at which the detection light enters the glass surface, making it easier to detect the location and shape of defects. It can clearly detect various defects such as scratches, stones, bubbles, and edge collapse on the surface and inside of the glass, realize the detection of the front and side of the glass sample, and avoid the problems existing in the existing precise detection methods.

[0016] 3. The device of the present invention can take pictures of glass stripes or glass ribs at different angles through a camera, and compare them with the stripe defect and glass rib defect sample images in the control system, so as to determine the severity of the stripes or glass ribs in the glass at different angles. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is one of the structural schematic diagrams of the multifunctional Mini LED back panel glass detection device of the present invention.

[0018] Figure 2 This is the second structural schematic diagram of the multifunctional Mini LED back panel glass detection device of the present invention.

[0019] Figure 3This is a front view of the multifunctional Mini LED back panel glass detection device of the present invention.

[0020] Figure 4 It is a rear view of the multifunctional Mini LED back panel glass detection device of the present invention.

[0021] In the figure, 1, rotating shaft; 2, motor 1; 3, light box; 4, supporting column; 401, supporting leg; 402, universal wheel; 5, motor 2; 601, upper base plate; 602, lower base plate; 603, left base plate; 604, right base plate; 701, hydraulic cylinder 1; 702, hydraulic cylinder 2; 703, hydraulic cylinder 3; 8, vacuum suction cup; 9, glass edge detection mechanism; 10, connecting plate; 11, base; 1101, annular slide; 12, motor 3; 13, camera. DETAILED DESCRIPTION

[0022] In order to enable persons skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention.

[0023] Example 1 like Figure 1-4 As shown, this embodiment provides a multifunctional Mini LED backplane glass detection device, including a frame, a rotating shaft 1 is rotatably connected to one side of the frame through a bearing, the rotating shaft 1 is arranged parallel to the side of the frame, and the rotating shaft 1 is connected to a motor 2 (a servo motor can be used), and the motor 2 is installed on the frame; a light box 3 is fixedly connected to the rotating shaft 1, and a lamp tube is installed in the light box 3. The lamp tube adopts a lighting method combining green light source and white light source, which can clearly detect various defects such as scratches, trachoma, bubbles, etc. on the surface and inside of the glass. The light source type is an LED light source, the light source power is 240W for green light source and 120W for white light source, and the slit opening range is 0.5-60mm. The motor 2 drives the shaft 1 to rotate, and then drives the light box 3 to rotate, so that the irradiation angle of the lamp tube changes within the range of 0°-90°. When the side of the glass needs to be inspected, the shaft 1 does not rotate so that the light of the lamp tube is irradiated on the side of the glass, and the glass edge will reflect brightly, so that the damage and edge collapse of the glass can be detected; then the motor 2 drives the shaft 1 to rotate, and the angle between the light of the lamp tube and the glass surface continues to change, so that the defects on the front of the glass (such as bubbles, stones, tin stains, marks, etc.) can be clearly displayed on the glass surface, which is convenient for the staff to observe with the naked eye. Therefore, through the above structural design, the defect detection of the front and side of the glass sample can be realized.

[0024] At the same time, if Figure 1-4As shown, the side of the frame is also connected to a support column 4 through a connecting plate 10, and the support column 4 is vertically arranged with respect to the side of the frame. A motor 2 5 (a servo motor may be used) is installed on the support column 4, and the motor 2 5 is key-connected with the connecting plate 10, and the driving shaft of the motor 2 5 is rotatably connected to the support column 4 through a bearing, so that the frame is rotatably connected with the support column 4. Start the motor 2 5, thereby driving the connecting plate 10 key-connected thereto to rotate, and finally causing the frame to rotate with the driving shaft of the servo motor as the rotating shaft, thereby realizing the switching of the frame between the horizontal state and the vertical state.

[0025] Specifically, Figure 1-4 As shown, the frame is composed of a telescopic plate, which includes an upper base plate 602601, a lower base plate, a left base plate 603 and a right base plate 604. The upper base plate 602601 and the lower base plate are respectively installed with a hydraulic cylinder 1 701 and a hydraulic cylinder 2 702 at both ends, and the cylinder bottoms of the hydraulic cylinder 1 701 and the hydraulic cylinder 2 702 are respectively connected to the upper base plate 602601 and the lower base plate; one end of the left base plate 603 and the right base plate 604 are respectively connected to the piston rod of the hydraulic cylinder 1 701 at both ends of the upper base plate 602601, and the other end is respectively connected to the piston rod of the hydraulic cylinder 3 703, and the cylinder bottom of the hydraulic cylinder 3 703 is connected to the piston rod of the hydraulic cylinder 2 702. By starting the hydraulic cylinder 1 701 and the hydraulic cylinder 2 702, the length of the upper and lower sides of the frame can be changed, and by starting the hydraulic cylinder 3 703, the length of the left and right side plates of the frame can be changed, and finally the size of the frame can be adjusted to adapt to glass of different sizes.

[0026] like Figure 1-4 As shown, a circle of glass adsorption mechanism (vacuum suction cup 8 can be used, and vacuum suction cup 8 is connected to a vacuum pump) is arranged on one side of the frame, and glass edge detection mechanism 9 is arranged at the four corners of the frame (glass edge detection mechanism 9 can use Panasonic Fx-501-C2 photoelectric sensor, and there are light source and other components inside to detect the position of the glass edge, and then determine the size and shape of the glass plate). When the frame is in a horizontal state, the size of the frame is changed by extending and retracting the piston rods of hydraulic cylinder 1 701, hydraulic cylinder 2 702, and hydraulic cylinder 3 703 until the glass edge detection mechanism 9 detects the edge of the glass below, stops extending and retracting, and then the glass below is adsorbed by the glass adsorption mechanism to complete the fixing of the glass.

[0027] Working principle: First, the initial state of the frame is horizontal. The sampled glass is transported to the bottom of the device of this embodiment by a trolley and aligned with the marking point. The edge of the glass below is detected by the glass edge detection mechanism 9. If it is not detected, the control system controls the start of hydraulic cylinder 1 701, hydraulic cylinder 2 702 and hydraulic cylinder 3 703 to change the size of the frame until the glass edge detection mechanism 9 detects the edge of the glass below. Then the vacuum suction cup 8 starts to work, adsorbs and fixes the glass below, and then driven by motor 2 5, the frame is switched to a vertical state to facilitate subsequent observation of defects on the glass. Then the control system turns on the lamp tube to illuminate the edge of the glass, and first observes and detects the defects on the edge of the glass; after the detection, it controls the start of motor 1 2 to rotate the lamp tube, change the angle of the light irradiated by the lamp tube on the glass surface, and then starts to detect the defects on the front of the glass, and finally realizes the defect detection on the front and side of the glass sample.

[0028] Example 2 On the basis of Example 1, Figure 3-4 As shown, a base 11 is provided at the bottom of the support column 4, and a motor 3 12 is provided on the base 11. The driving shaft of the motor 3 12 is vertically arranged upward and connected to the bottom of the support column 4; a slide projector is placed on the side of the frame where the glass is adsorbed, and a focusing sleeve is provided on the slide projector, and a screen is placed on the other side, and a camera 13 is installed on the side of the frame facing away from the glass. The point light source of the slide projector illuminates the glass, and the stripe defects and glass rib defects of the glass are displayed on the screen. The camera 13 takes a picture of the image on the screen and compares it with the stripe defect and glass rib defect sample pictures in the control system to determine the levels of the glass stripes and glass ribs.

[0029] Turning on the slide projector can focus the light source on the entire glass, and the illumination reaches the specified standard light intensity. The light from the slide projector passes through the glass and shines on the screen behind it. At this time, the stripe defects and glass tendon defects of the glass can be seen on the screen. Then the motor 3 12 is controlled to start, driving the support column 4 to rotate in place, so that the glass rotates, and the camera 13 on the back of the frame will take pictures of the images of different glass angles on the screen. After taking pictures, they are uploaded to the control system, and can be automatically compared with the stripe defect and glass tendon defect sample pictures in the control system to determine the severity of the glass stripes at each angle and the level of the glass stripes and glass tendons.

[0030] Example 3 On the basis of Example 2, in order to make the glass rotate more smoothly, Figure 1-3As shown, an annular slideway 1101 is provided on the upper surface of the base 11, four supporting legs 401 are provided on the supporting column 4, and universal wheels 402 are provided at the bottom of the supporting legs 401, and the universal wheels 402 are placed in the annular slideway 1101. During the rotation of the glass, the universal wheels 402 at the bottom of the supporting legs 401 move along the annular slideway 1101, thereby increasing the stability of the glass rotation.

Claims

1. A multifunctional Mini LED back panel glass detection device, characterized in that: The invention comprises a frame, wherein a rotating shaft (1) is rotatably connected to one side of the frame, the rotating shaft (1) is arranged parallel to the side of the frame, and a motor (2) is connected to the rotating shaft (1), a light box (3) is fixedly connected to the rotating shaft (1), and a lamp tube is installed in the light box (3); a supporting column (4) is also rotatably connected to the side of the frame, the supporting column (4) is arranged perpendicular to the side of the frame, a motor (5) is installed on the supporting column (4), the motor (5) is key-connected to the side of the frame, and the motor (5) drives the frame to rotate so that it switches between a horizontal state and a vertical state; the frame is composed of a telescopic plate, a circle of glass adsorption mechanisms is arranged on one side of the frame, and glass edge detection mechanisms (9) are respectively arranged at the four corners of the frame, and when the frame is in a horizontal state, the telescopic plate is extended and retracted to change the size of the frame until the glass edge detection mechanism (9) detects the edge of the glass below, and then the telescopic plate stops extending and retracting, and the glass adsorption mechanism adsorbs the glass below.

2. The multifunctional Mini LED back panel glass detection device according to claim 1, characterized in that: The telescopic plate comprises an upper base plate (601), a lower base plate (602), a left base plate (603) and a right base plate (604); hydraulic cylinder one (701) and hydraulic cylinder two (702) are respectively installed at both ends of the upper base plate (601) and the lower base plate (602); the cylinder bottoms of hydraulic cylinder one (701) and hydraulic cylinder two (702) are respectively connected to the upper base plate (601) and the lower base plate (602); one end of the left base plate (603) and the right base plate (604) are respectively connected to the piston rod of hydraulic cylinder one (701) at both ends of the upper base plate (601), and the other end is respectively connected to the piston rod of hydraulic cylinder three (703), and the cylinder bottom of hydraulic cylinder three (703) is connected to the piston rod of hydraulic cylinder two (702).

3. The multifunctional Mini LED back panel glass detection device according to claim 1, characterized in that: The glass adsorption mechanism is a vacuum suction cup (8).

4. The multifunctional Mini LED back panel glass detection device according to claim 1, characterized in that: A connecting plate (10) is installed on the side of the frame, the connecting plate (10) is connected to a support column (4), and the support column (4) is arranged perpendicular to the side of the frame; a second motor (5) is installed on the support column (4), the second motor (5) is key-connected to the connecting plate (10), and a drive shaft of the second motor (5) is rotatably connected to the support column (4) through a bearing, so that the frame is rotatably connected to the support column (4).

5. The multifunctional Mini LED back panel glass detection device according to claim 1, characterized in that: The support column (4) is provided with a base (11) at the bottom, and a motor three (12) is provided on the base (11). The driving shaft of the motor three (12) is vertically arranged upward and connected to the bottom of the support column (4). A slide projector is placed on one side of the frame on which the glass is adsorbed, and a screen is placed on the other side. A camera (13) is installed on the side of the frame facing away from the glass. The point light source of the slide projector illuminates the glass, and the stripe defects and glass rib defects of the glass are displayed on the screen. The camera (13) takes a picture of the image on the screen and compares it with the stripe defect and glass rib defect sample images in the control system to determine the level of the glass stripe and glass rib defects.

6. The multifunctional Mini LED back panel glass detection device according to claim 5, characterized in that: An annular slideway (1101) is provided on the upper surface of the base (11), a plurality of support legs (401) are provided on the support column (4), a universal wheel (402) is provided at the bottom of the support leg (401), and the universal wheel (402) is placed in the annular slideway (1101).

7. The multifunctional Mini LED back panel glass detection device according to claim 5, characterized in that: The slide projector is provided with a light focusing sleeve.

8. A process for detecting Mini LED backplane glass using the multifunctional Mini LED backplane glass detection device according to any one of claims 1 to 7, characterized in that: The frame is initially in a horizontal state. The sampled glass is transported to the bottom of the frame. The edge of the glass below is detected by the glass edge detection mechanism (9). If it is not detected, the control system controls the activation of hydraulic cylinder 1 (701), hydraulic cylinder 2 (702) and hydraulic cylinder 3 (703) to change the size of the frame until the glass edge detection mechanism (9) detects the edge of the glass below. The vacuum suction cup (8) then absorbs and fixes the glass below. Then, driven by motor 2 (5), the frame is switched to a vertical state. The control system turns on the light tube to illuminate the edge of the glass. The defects of the glass edge are first observed and detected. After the detection is completed, the control system controls the activation of motor 1 (2) to rotate the light tube, change the angle of light irradiated by the light tube on the glass surface, detect the defects on the front of the glass, and realize the defect detection on the front and side of the glass sample.

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