Display screen brightness detection device

Abstract

The invention relates to the field of display screen brightness detection, and specifically to a display screen brightness detection device, comprising two symmetrically arranged No. 1 conveyor belts, two support boxes symmetrically arranged between the two No. 1 conveyor belts, and a No. 2 conveyor belt arranged between the two support boxes; a crossbeam is arranged above the two No. 1 conveyor belts, and two groups of No. 1 cylinders are slidably connected to the lower surface of the crossbeam, and the output end of each No. 1 cylinder is connected to a suction cup; a No. 1 plate is fixedly connected between the cylinder bodies of each group of No. 1 cylinders, and a plug-in component is arranged below the No. 1 plate; in the present invention, the brightness detection of display screens on both sides can be realized by sequentially executing step one, step two, step three, step four and step five, and the two groups of No. 1 cylinders execute their own actions simultaneously without interfering with each other, and the No. 2 cylinder drives the No. 2 plate to move up and down, and quickly realizes the plugging and unplugging of a power plug and a video connection line, and compared with the current display screen brightness detection method, the efficiency is improved, and the device can be competent for large-scale display screen brightness detection operations.

Description

Technical Field

[0001] The invention relates to the field of display screen brightness detection, and in particular to a display screen brightness detection device. Background Art

[0002] When display screens are produced, one of the production links is product quality inspection, such as checking the appearance of the display screen product, testing the quality of the screen, whether the brightness is up to standard, whether the display color meets the expected settings, etc.

[0003] Among them, brightness detection is a key link to ensure stable display quality and reliable performance. Through strict testing of the screen, potential defects, faults and poor performance can be discovered, so that timely repairs and replacements can be made to ensure the normal operation of the screen. At the same time, it provides strong data support for production, installation and maintenance, improves overall efficiency and user experience, and appropriate brightness can prevent excessive light from causing damage to the eyes, reduce eye fatigue, and protect vision health.

[0004] At present, the brightness detection method of display screens generally uses professional photometers or colorimeters. The detection heads of these instruments are attached to the display screen. At the same time, the display screen needs to be powered on and connected to the video input line. The video input line is connected to the computer, and the computer inputs the detection image to the display screen for a more comprehensive detection of the display screen. These instruments can accurately measure the brightness of the light source and quantify it into specific values, so that on-site quality inspectors can accurately judge whether the brightness of the display screen meets the standards. However, since the display screens are produced and assembled through assembly lines, the efficiency is high and the output is large. When facing the quality inspection of large quantities of products, the current display screen brightness detection method is not competent.

[0005] Therefore, in order to solve the above problem, a display screen brightness detection device is proposed. Summary of the invention

[0006] In order to make up for the shortcomings of the prior art and solve the problem in the background technology that the current display brightness detection method is not competent for the quality inspection of large quantities of products.

[0007] The technical solution adopted by the present invention to solve the technical problem is as follows: a display screen brightness detection device according to the present invention comprises two symmetrically arranged No. 1 conveyor belts, two support boxes are symmetrically arranged between the two No. 1 conveyor belts, each support box is provided with a brightness detector, and a No. 2 conveyor belt is arranged between the two support boxes;

[0008] A crossbeam is provided above the two No. 1 conveyor belts, and two groups of No. 1 cylinders are slidably connected to the lower surface of the crossbeam. The output end of each No. 1 cylinder is connected to a suction cup, and the suction cup is used to adsorb the display screen;

[0009] A No. 1 plate is fixedly connected between the cylinder bodies of each group of No. 1 cylinders, and a plug-in assembly is arranged below the No. 1 plate;

[0010] The plug-in assembly comprises a No. 2 cylinder, the output end of which is fixedly connected to a No. 2 board, on which a power plug for plugging into a display screen and a video connection line for plugging into the display screen are arranged.

[0011] Preferably, the output end of the No. 2 cylinder is also fixedly connected to the No. 3 plate, which is located below the No. 2 plate. Fixed pins are symmetrically provided on both sides of the lower surface of the No. 3 plate, and a slide groove is provided on the lower surface of the No. 3 plate. A movable pin is provided in the slide groove. The movable pin can move along the slide groove, and the movable pin and the fixed pin can be inserted into the bolt holes on the back of the display screen.

[0012] Preferably, each No. 1 conveyor belt surface is provided with a No. 1 limit block in the width direction, and the No. 1 limit block can limit the distance between two adjacent display screens. Each No. 1 conveyor belt surface is provided with a No. 2 limit block in the length direction, and the No. 2 limit block can limit the display screen to be placed in the center of the No. 1 conveyor belt.

[0013] Preferably, the upper end surface of the cylinder body of the No. 2 cylinder is connected to the lower surface of the No. 1 plate through a No. 1 spring.

[0014] Preferably, a sleeve is provided on the upper surface of the No. 3 plate, and the output end of the No. 2 cylinder is slidably connected in the sleeve through a No. 2 spring;

[0015] The third board is provided with guide holes for adapting the power plug and the video connecting line.

[0016] Preferably, a sealing strip is provided on the inner wall of the tray, the interior of the sealing strip is hollow, and the sealing strip is connected to an external air pump through an air supply pipe.

[0017] Preferably, a plurality of air jet holes are provided on the inner side wall of the tray, and the exhaust directions of the air jet holes are inclined to point toward the inner bottom surface of the tray.

[0018] Preferably, a switching assembly is provided in the support box, and the switching assembly can realize that the air supply pipe supplies air to the sealing strip and the air injection hole alternately, and the switching assembly includes a vertical rod and a No. 3 spring; a sliding hole is vertically provided at a corner position in the support box, one side of each sliding hole is connected to the air supply pipe, and the other side of each sliding hole is connected to the No. 1 channel of the air injection hole and the No. 2 channel connected to the sealing strip, and the No. 2 channel is located above the No. 1 channel;

[0019] The lower end of the vertical rod is slidably connected in the sliding hole through a No. 3 spring, and an annular groove is radially arranged in the middle part of the vertical rod.

[0020] Preferably, a plurality of sealing rings are provided on the outer ring of each vertical rod, and the sealing rings are arranged one by one at the lower end of the vertical rod and at the upper and lower sides of the annular groove.

[0021] Preferably, a camera is provided on the lower surface of the second plate, and the camera is used to take a picture to obtain the QR code on the back surface of the display screen.

[0022] The present invention is beneficial in that:

[0023] 1. In the present invention, the brightness detection of the display screens on both sides can be realized by executing step one, step two, step three, step four and step five in sequence. The two groups of No. 1 cylinders simultaneously execute their respective actions without interfering with each other. Furthermore, the No. 2 cylinder drives the No. 2 plate to move up and down, so as to quickly realize the connection and disconnection of the power plug and the video cable. Compared with the current display screen brightness detection method, the efficiency is improved, and it can be competent for large-scale display screen brightness detection operations.

[0024] 2. In the present invention, an air jet hole is provided on the inner wall of the tray, and the exhaust direction of the air jet hole is toward the bottom surface of the tray. In step 2 or step 4, the suction cup is located above the tray, and an external air pump injects gas into the air jet hole. The gas impacts the inside of the tray and lifts up the dust in the tray. At this time, the suction cup absorbs the lifted dust and takes the dust away from the tray, thereby reducing the influence of the dust on the brightness detector. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a three-dimensional diagram of the display screen brightness detection device in the present invention;

[0026] Figure 2 It is a front view of the display screen brightness detection device in the present invention;

[0027] Figure 3 This is a schematic diagram of the display screen brightness detection process in the present invention;

[0028] Figure 4 A three-dimensional diagram of the display screen of the present invention;

[0029] Figure 5 It is a three-dimensional diagram of the cooperation between the No. 1 plate and the No. 2 cylinder in the present invention;

[0030] Figure 6 It is a three-dimensional diagram of the cooperation between the No. 1 cylinder and the suction cup in the present invention;

[0031] Figure 7 It is a three-dimensional diagram of the coordination of two groups of No. 1 cylinders in the present invention;

[0032] Figure 8 It is a three-dimensional diagram of the cooperation between the No. 2 cylinder and the No. 2 plate in the present invention;

[0033] Fig. 9 It is a three-dimensional diagram of the cooperation between the second plate and the third plate in the present invention;

[0034] Fig.10 It is a schematic diagram of the cooperation between the No. 2 cylinder and the No. 3 plate in the present invention;

[0035] Fig.11 A three-dimensional diagram of a tray in the present invention;

[0036] Fig.12 It is a partial cross-sectional view of the tray box in the present invention;

[0037] Fig.13 It is a three-dimensional diagram of the vertical rod in the present invention.

[0038] In the figure: 1. Conveyor belt No. 1; 2. Tray; 3. Conveyor belt No. 2; 4. Crossbeam; 5. Cylinder No. 1; 6. Suction cup; 7. Display screen; 8. Board No. 1; 9. Cylinder No. 2; 10. Board No. 2; 11. Power plug; 12. Video connection line; 13. Board No. 3; 14. Fixed pin; 15. Slide; 16. Movable pin; 17. Bolt hole; 18. Limit block No. 1; 19. Limit block No. 2; 20. , spring No. 1; 21. sleeve; 22. guide hole; 23. sealing strip; 24. air supply pipe; 25. jet hole; 26. vertical rod; 27. spring No. 3; 28. sliding hole; 29. ​​channel No. 1; 30. channel No. 2; 31. annular groove; 32. sealing ring; 33. camera; 34. QR code; 35. screw; 36. hollow block; 37. negative pressure pipe; 38. adjusting screw; 39. forward and reverse motor. DETAILED DESCRIPTION

[0039] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0040] Reference Figure 1 - Fig.10 A display screen brightness detection device comprises two symmetrically arranged No. 1 conveyor belts 1, two trays 2 are symmetrically arranged between the two No. 1 conveyor belts 1, each tray 2 is provided with a brightness detector, and a No. 2 conveyor belt 3 is arranged between the two trays 2;

[0041] A crossbeam 4 is arranged above the two No. 1 conveyor belts 1, and two groups of No. 1 cylinders 5 are slidably connected to the lower surface of the crossbeam 4. The output end of each No. 1 cylinder 5 is connected to a suction cup 6, and the suction cup 6 is used to adsorb the display screen 7;

[0042] A No. 1 plate 8 is fixedly connected between the cylinder bodies of each group of No. 1 cylinders 5, and a plug-in assembly is arranged below the No. 1 plate 8;

[0043] The plug-in assembly includes a No. 2 cylinder 9, the output end of the No. 2 cylinder 9 is fixedly connected to a No. 2 board 10, and the No. 2 board 10 is provided with a power plug 11 plugged into the display screen 7 and a video connection line 12 plugged into the display screen 7;

[0044] In the embodiment, the crossbeam 4 is provided with a guide groove for the two groups of No. 1 cylinders 5 to slide, and a screw rod 35 is provided in the guide groove. The screw rod 35 is driven by an external forward and reverse motor. The rotation of the screw rod 35 can realize the synchronous movement of the two groups of No. 1 cylinders 5.

[0045] A hollow block 36 is provided between the suction cup 6 and the output end of the No. 1 cylinder 5, the hollow block 36 is connected to the suction cup 6, and a negative pressure pipe 37 is also connected to the hollow block 36, and the negative pressure pipe 37 is connected to an external negative pressure pump; each group is provided with four No. 1 cylinders 5, and the four No. 1 cylinders 5 are respectively opposite to the back corners of the display screen 7;

[0046] The No. 1 conveyor belt 1 and the No. 2 conveyor belt 3 are both made of anti-scratch sponge conveyor belt material to protect the display screen 7, and the No. 1 conveyor belt 1 and the No. 2 conveyor belt 3 are both driven by servo motors to achieve accurate transmission of the No. 1 conveyor belt 1 and the No. 2 conveyor belt 3;

[0047] The specific detection process of the brightness of the display screen 7 is as follows:

[0048] The operator places the display screen 7 on the two No. 1 conveyor belts 1, with the back of the display screen 7 facing upwards. The No. 1 conveyor belt 1 conveys the display screen 7 from its head end position to its end position;

[0049] Step 1: If Figure 3 As shown in a, the initial state of the display screen brightness detection device, a group of No. 1 cylinders 5 on the left side is located above the end of the No. 1 conveyor belt 1 on the left side, and a group of No. 1 cylinders 5 on the right side is located above the No. 2 conveyor belt 3. The No. 1 cylinder 5 on the left side drives the suction cup 6 to move downward, and the negative pressure pump is operated in the suction cup 6 to achieve negative pressure, and the display screen 7 on the end of the No. 1 conveyor belt 1 on the left side is adsorbed. Then the No. 2 cylinder 9 on the left side drives the No. 2 board 10 to move downward, and the No. 2 board 10 drives the power plug 11 and the video connection line 12 to be respectively plugged into the power jack and the video input jack on the back of the display screen 7. At this time, the display screen 7 is powered on, and the computer transmits the detection image to the display screen 7. After that, the No. 1 cylinder 5 on the left side drives the display screen 7 to move upward through the suction cup 6, so that the display screen 7 is separated from the No. 1 conveyor belt 1 on the left side. At the same time, the No. 2 cylinder 9 also drives the No. 2 board 10 to move upward, and to the same height as the display screen 7, to ensure that the power plug 11 and the video connection line 12 can be stably plugged in;

[0050] Step 2: If Figure 3As shown in b, the forward and reverse motor drives the screw rod 35 to rotate, and the screw rod 35 drives the No. 1 cylinder 5 on the left to move above the left tray 2, and the No. 1 cylinder 5 on the right to move above the right tray 2; at this time, the No. 1 cylinder 5 on the left drives the display screen 7 to move downward and move into the tray 2, and the No. 2 cylinder 9 also drives the No. 2 plate 10 to move downward, and the downward movement height is the same as the downward movement height of the display screen 7; the display screen 7 is placed in the tray 2, and the brightness detector starts to detect the brightness of the display screen 7, and the detection result is transmitted to the backstage central control console for quality inspection personnel to judge. After the detection is completed, the No. 1 cylinder 5 on the left drives the display screen 7 to move upward, and the No. 2 cylinder 9 also drives the No. 2 plate 10 to move upward, and the upward movement height is the same as the upward movement height of the display screen 7;

[0051] Step 3: If Figure 3 As shown in c, the forward and reverse motor drives the screw rod 35 to rotate, and the screw rod 35 drives the No. 1 cylinder 5 on the left to move above the head end of the No. 2 conveyor belt 3, and the No. 1 cylinder 5 on the right moves above the end of the No. 1 conveyor belt 1 on the right; the No. 1 cylinder 5 on the left drives the display screen 7 to move down and lay it flat on the No. 2 conveyor belt 3 which is in the paused operation, the negative pressure pump is paused, the suction cup 6 no longer absorbs the display screen 7, and the display screen 7 falls flat on the No. 2 conveyor belt 3, then the No. 1 cylinder 5 on the left drives the suction cup 6 to move up, and at the same time the No. 2 cylinder 9 on the left drives the No. 2 board 10 to move up, the power plug 11 and the video connection line 12 fall off the display screen 7, and the No. 2 conveyor belt 3 transfers the display screen 7 away;

[0052] During the process of the No. 1 cylinder 5 on the left driving the display screen 7 to unload, the No. 1 cylinder 5 on the right drives the suction cup 6 to move downward, and the negative pressure pump is operated in the suction cup 6 to realize negative pressure, and the display screen 7 on the end of the No. 1 conveyor belt 1 on the right is adsorbed, and then the No. 2 cylinder 9 on the right drives the No. 2 board 10 to move downward, and the No. 2 board 10 drives the power plug 11 and the video connection line 12 to be respectively plugged into the power jack and the video input jack on the back of the display screen 7. At this time, the display screen 7 is powered on, and the computer transmits the detection picture to the display screen 7. After that, the No. 1 cylinder 5 on the right drives the display screen 7 to move upward through the suction cup 6, so that the display screen 7 is separated from the No. 1 conveyor belt 1 on the right. At the same time, the No. 2 cylinder 9 on the right also drives the No. 2 board 10 to move upward, and to the same height as the display screen 7, to ensure that the power plug 11 and the video connection line 12 can be stably plugged in;

[0053] Step 4: If Figure 3As shown in d, the forward and reverse motor drives the screw rod 35 to rotate in the opposite direction, and the screw rod 35 drives the No. 1 cylinder 5 on the right to move to the top of the right tray 2, and the No. 1 cylinder 5 on the left to move to the top of the left tray 2; at this time, the No. 1 cylinder 5 on the right drives the display screen 7 to move downward and move into the tray 2, and at the same time, the No. 2 cylinder 9 on the right also drives the No. 2 plate 10 to move downward, and the downward movement height is the same as the downward movement height of the display screen 7; the display screen 7 is placed in the tray 2, and the brightness detector starts to detect the brightness of the display screen 7, and the detection results are transmitted to the backstage central control console for quality inspection personnel to judge. After the detection is completed, the No. 1 cylinder 5 on the right drives the display screen 7 to move upward, and at the same time, the No. 2 cylinder 9 also drives the No. 2 plate 10 to move upward, and the upward movement height is the same as the upward movement height of the display screen 7;

[0054] Step 5: If Figure 3 As shown in FIG. e, the forward and reverse motor drives the screw rod 35 to rotate in the opposite direction, and the screw rod 35 drives the No. 1 cylinder 5 on the right to move to above the head end of the No. 2 conveyor belt 3, and the No. 1 cylinder 5 on the left moves to above the end of the No. 1 conveyor belt 1 on the left, and step 1 is performed; the No. 1 cylinder 5 on the right drives the display screen 7 to move down and lay it flat on the No. 2 conveyor belt 3 which is in the paused state, the negative pressure pump is paused, the suction cup 6 no longer absorbs the display screen 7, and the display screen 7 falls flat on the No. 2 conveyor belt 3, the No. 1 cylinder 5 on the left drives the suction cup 6 to move up, and at the same time, the No. 2 cylinder 9 on the right drives the No. 2 board 10 to move up, the power plug 11 and the video connection line 12 fall off the display screen 7, and the No. 2 conveyor belt 3 transfers the display screen 7 away;

[0055] By sequentially executing the above steps one, two, three, four and five, the brightness detection of the display screens 7 on both sides can be realized. When the No. 1 cylinder 5 on the left side grabs the display screen 7 through the suction cup 6, the No. 1 cylinder 5 on the right side places the display screen 7 that has been detected on the No. 2 conveyor belt 3 through the suction cup 6 for transmission. Similarly, when the No. 1 cylinder 5 on the right side grabs the display screen 7 through the suction cup 6, the No. 1 cylinder 5 on the left side places the display screen 7 that has been detected on the No. 2 conveyor belt 3 through the suction cup 6 for transmission. The two groups of No. 1 cylinders 5 perform their respective actions simultaneously without interfering with each other. Furthermore, the No. 2 cylinder 9 drives the No. 2 board 10 to move up and down, so as to quickly realize the connection and disconnection of the power plug 11 and the video connection line 12. Compared with the current display screen brightness detection method, the efficiency is improved, and it can be competent for large-scale display screen brightness detection operations.

[0056] In this embodiment, brightness detectors are arranged in a matrix on the bottom surface of the tray 2, and the brightness detection of the display screen 7 is divided into multiple areas for detection. When detecting the brightness of the display screen, if the brightness of a certain area of ​​the display screen 7 does not meet the standard, the corresponding brightness detector will prompt the quality inspectors, such as giving an auditory prompt of a buzzer, or a visual prompt of a flashing red light, etc., so that the on-site quality inspectors can accurately know the problem points of the display screen 7.

[0057] Reference Figure 8 - Fig.10 The output end of the No. 2 cylinder 9 is also fixedly connected to the No. 3 plate 13, which is located below the No. 2 plate 10. Fixed pins 14 are symmetrically arranged on both sides of the lower surface of the No. 3 plate 13. A slide groove 15 is arranged on the lower surface of the No. 3 plate 13. A movable pin 16 is arranged in the slide groove 15. The movable pin 16 can move along the slide groove 15, and the movable pin 16 and the fixed pin 14 can be inserted into the bolt hole 17 on the back of the display screen 7;

[0058] An adjusting screw rod 38 is provided in the slide groove 15 to drive the movable latch 16 to move. The adjusting screw rod 38 is driven by a forward and reverse motor 39. The adjusting screw rod 38 can drive the movable latch 16 to move in the slide groove 15.

[0059] The back of the display screen 7 is provided with a bracket bolt hole 17 for fixing the display screen 7, and the third plate 13 is shaped according to the position of the mounting hole. In this embodiment, Figure 4 As shown, three bolt holes 17 are reserved on the back of the display screen 7, and the three bolt holes 17 are arranged in a triangular shape, two fixed latches 14 are inserted into the two bolt holes 17 near the upper edge of the display screen 7, and the movable latch 16 is inserted into the bolt hole 17 near the lower edge of the display screen 7;

[0060] The second plate 10 and the third plate 13 are both connected to the output end of the second cylinder 9, and the second cylinder 9 can drive the second plate 10 and the third plate 13 to move downward and upward synchronously;

[0061] During the process of powering on the display screen 7, the No. 2 cylinder 9 drives the No. 3 plate 13 to move downward, so that the lower ends of the fixed pin 14 and the movable pin 16 are respectively placed in the bolt holes 17 opposite to them, and are not fully inserted. Then the forward and reverse motor 39 is driven, and the movable pin 16 moves along the slide slot 15. The movable pin 16 squeezes the inner wall of the bolt hole 17 where it is located, and at the same time, the fixed pin 14 is also squeezed on the inner wall of the bolt hole 17 where it is located. At this time, the No. 3 plate 13 drives the output end of the No. 2 cylinder 9 to deviate by a certain angle, so that the ends of the power plug 11 and the video connection line 12 are aligned with the power jack and the video input jack on the back of the display screen 7. Then the No. 2 cylinder 9 is driven downward again. At this time, the fixed pin 14 and the movable pin 16 are fully inserted into the bolt hole 17, the power plug 11 is inserted into the power jack, and the end of the video connection line 12 is inserted into the video input jack, so as to achieve accurate plugging of the ends of the power plug 11 and the video connection line 12, thereby improving the success rate of plugging of the power plug 11 and the video connection line 12.

[0062] Reference Figure 1Each of the No. 1 conveyor belts 1 is provided with a No. 1 limit block 18 in the width direction of the surface, and the No. 1 limit block 18 can limit the distance between two adjacent display screens 7. Each of the No. 1 conveyor belts 1 is provided with a No. 2 limit block 19 in the length direction of the surface, and the No. 2 limit block 19 can limit the display screen 7 to be placed in the center on the No. 1 conveyor belt 1;

[0063] A No. 1 limit block 18 and a No. 2 limit block 19 are set on the No. 1 conveyor belt 1. When the display screen 7 to be tested is placed, the position of the display screen 7 on the No. 1 conveyor belt 1 can be restricted, and the distance between two adjacent display screens 7 can be limited. At the same time, the display screen 7 is centered and placed flat on the No. 1 conveyor belt 1, which helps to improve the precise connection of the fixed pin 14, the movable pin 16, the power connector and the video connecting cable 12.

[0064] Reference Figure 5 - Fig.10 The upper end surface of the cylinder body of the No. 2 cylinder 9 is connected to the lower surface of the No. 1 plate 8 through the No. 1 spring 20;

[0065] When the fixed latch 14 and the movable latch 16 are inserted into the bolt hole 17, the movable latch 16 squeezes the bolt hole 17, which will cause the No. 3 plate 13 and the No. 2 cylinder 9 to deviate. In order to enable the No. 2 cylinder 9 to deviate flexibly and in any direction upward, the No. 2 cylinder 9 is connected to the lower surface of the No. 1 plate 8 through the No. 1 spring 20. The No. 1 spring 20 can not only connect the No. 2 cylinder 9, but also realize the flexible displacement of the No. 2 cylinder 9. In step 1 and step 4, when the No. 1 cylinder 5 drives the display screen 7 to move upward, the No. 2 cylinder 9 does not need to move upward with the upward movement of the output end of the No. 1 cylinder 5. The power connector and the video connecting line 12 are squeezed on the back of the display screen 7, and the No. 1 spring 20 can be compressed, and there is no need to consider the problem of the power connector and the video connecting line 12 squeezing and damaging the display screen 7.

[0066] Taking into account that each group of No. 1 cylinder 5 moves back and forth along the cross beam 4, at the moment when each group of No. 1 cylinder 5 pauses, the No. 2 cylinder 9 will be caused to swing, and the swing can be restrained by the No. 1 spring 20. The elasticity and rigidity of the No. 1 spring 20 itself are sufficient to stabilize the No. 2 cylinder 9 before the output end of the No. 2 cylinder 9 moves downward, so that the fixed pin 14 and the movable pin 16 are stably inserted in the bolt hole 17.

[0067] Reference Figure 8 - Fig.10 The upper surface of the No. 3 plate 13 is provided with a sleeve 21, and the output end of the No. 2 cylinder 9 is slidably connected in the sleeve 21 through the No. 2 spring;

[0068] The third board 13 is provided with a guide hole 22 adapted to the power plug 11 and the video connection line 12;

[0069] When the No. 2 cylinder 9 drives the No. 2 plate 10 and the No. 3 plate 13 to move downward, the fixed latch 14 and the movable latch 16 on the No. 3 plate 13 are inserted into the bolt hole 17. At this time, the fixed latch 14 and the movable latch 16 can be directly inserted at the bottom of the bolt hole 17. Since a No. 2 spring is set between the output end of the No. 2 cylinder 9 and the No. 3 plate 13, the No. 2 spring can be compressed; the fixed latch 14 and the movable latch 16 can be directly inserted at the bottom of the bolt hole 17, and then the movable latch 16 is moved, and the fixed latch 14 and the movable latch 16 are fastened to the back of the display screen 7. On the surface, the output end of the No. 2 cylinder 9 moves downward again, driving the power plug 11 and the video connection line 12 on the No. 2 board 10 to be inserted on the back of the display screen 7, and at this time the No. 2 spring is further compressed again, and there is no need to consider that the fixed pin 14, the movable pin 16, the power plug 11 or the video connection line 12 squeeze and damage the back part of the display screen 7. The setting of the No. 2 spring allows the fixed pin 14 and the movable pin 16 to be directly inserted at the bottom position of the bolt hole 17, reducing the control of the No. 2 cylinder 9 and further optimizing the execution of the No. 2 cylinder 9.

[0070] The guide hole 22 is provided to guide the linear movement of the power plug 11 and the video connection cable 12, so that the power plug 11 and the video connection cable 12 can be stably plugged into the back of the display screen 7 when plugged in.

[0071] Reference Fig.11 A sealing strip 23 is provided on the inner wall of the tray 2, the interior of the sealing strip 23 is hollow, and the sealing strip 23 is connected to an external air pump through an air supply pipe 24;

[0072] Considering that the display screen 7 can be accurately placed in the tray 2, the inner wall gap of the tray 2 is matched with the outer frame of the display screen 7, which makes a gap between the tray 2 and the display screen 7, and there is a situation where external light enters the tray 2, affecting the accuracy of the display screen brightness detection. For this reason, a hollow sealing strip 23 is provided on the inner wall of the tray 2, and after gas is injected into the sealing strip 23, it can expand and squeeze on the frame of the display screen 7 to seal the gap, avoid or reduce external light from entering the tray 2, and improve the accuracy of the display screen brightness detection;

[0073] The sealing strip 23 is connected to an external air pump through an air supply pipe 24. After the display screen 7 is placed in the tray 2, air is ventilated inside the sealing strip 23, the sealing strip 23 expands, and the gap is blocked. After the display screen brightness detection is completed, the external air pump stops running, the gas in the sealing strip 23 is released, the sealing strip 23 shrinks, and the display screen 7 is moved up and taken out.

[0074] Reference Fig.11 A plurality of air jet holes 25 are provided on the inner side wall of the tray 2, and the exhaust direction of the air jet holes 25 is inclined to the inner bottom surface of the tray 2;

[0075] Considering that the opening of the tray 2 is arranged upward and the brightness detector in the tray 2 is in a completely exposed state, there is a possibility that dust falls into the tray 2, and the dust will affect the brightness detection effect of the brightness detector on the display screen 7. For this reason, an air jet hole 25 is arranged on the inner wall of the tray 2, and the exhaust direction of the air jet hole 25 is toward the bottom surface of the tray 2. In step 2 or step 4, the suction cup 6 is located above the tray 2, and the external air pump injects gas into the air jet hole 25. The gas impacts the inside of the tray 2 and lifts up the dust in the tray 2. At this time, the suction cup 6 absorbs the raised dust and takes the dust away from the tray 2, thereby reducing the impact of the dust on the brightness detector.

[0076] Reference Fig.11 - Fig.13 The tray box 2 is provided with a switching component, which can realize that the air supply pipe 24 supplies air to the sealing strip 23 and the air injection hole 25 alternately, and the switching component includes a vertical rod 26 and a third spring 27; a sliding hole 28 is vertically provided at a corner position in the tray box 2, one side of each sliding hole 28 is connected to the air supply pipe 24, and the other side of each sliding hole 28 is connected to the first channel 29 of the air injection hole 25 and the second channel 30 connected to the sealing strip 23, and the second channel 30 is located above the first channel 29;

[0077] The lower end of the vertical rod 26 is slidably connected in the sliding hole 28 via a No. 3 spring 27, and an annular groove 31 is radially provided in the middle of the vertical rod 26;

[0078] When the vertical rod 26 is in the initial state in the slide hole 28, the lower end of the vertical rod 26 is located above the air outlet of the air supply pipe 24, and the gas enters the slide hole 28 along the air supply pipe 24, and then the gas enters the No. 1 channel 29, and finally the gas is discharged from the air injection hole 25, impacting the dust in the tray 2; when the display screen 7 moves into the tray 2, the frame corner position of the display screen 7 presses down the vertical rod 26, the vertical rod 26 moves down, and the lower end of the vertical rod 26 blocks the No. 1 channel 29, and at the same time the annular groove 31 is opposite to the air outlet of the air supply pipe 24, and the gas enters the No. 2 channel 30 along the annular groove 31 and the slide hole 28, and finally the gas enters the sealing strip 23, the sealing strip 23 expands, and blocks the gap between the tray 2 and the display screen 7;

[0079] The display screen 7 moves upward, and the frame of the display screen 7 no longer presses down the vertical rod 26. The vertical rod 26 moves upward under the elastic force of the No. 3 spring 27 connected to it, and the vertical rod 26 is in the initial state again. During the whole process, the external air pump for supplying air is always in operation, and there is no need to intermittently control the start and stop of the external air pump. Further optimizing the control is also a protection for the external air pump and extends its service life.

[0080] Reference Fig.12 - Fig.13A plurality of sealing rings 32 are provided on the outer ring of each vertical rod 26, and the sealing rings 32 are arranged one by one at the lower end of the vertical rod 26 and at the upper and lower sides of the annular groove 31; the sealing rings 32 are arranged to perform gas sealing between the No. 1 channel 29 and the No. 2 channel 30, and to seal the gap between the vertical rod 26 and the sliding hole 28.

[0081] Reference Figure 6 A camera 33 is provided on the lower surface of the second plate 10, and the camera 33 is used to take pictures to obtain a QR code 34 on the back surface of the display screen 7; when the first cylinder 5 drives the suction cup 6 to adsorb the display screen 7, the camera 33 takes a picture of the QR code 34 on the back of the display screen 7, which can also be a barcode, and the taken picture is uploaded to the background central control console, which is applied to the identity of the display screen 7. During the subsequent brightness quality inspection, the specific parameters of the brightness of the display screen 7 are added to the identity of the display screen 7 to facilitate statistical management of the data.

[0082] Working principle:

[0083] Step 1: If Figure 3 As shown in a, the initial state of the display screen brightness detection device, a group of No. 1 cylinders 5 on the left side is located above the end of the No. 1 conveyor belt 1 on the left side, and a group of No. 1 cylinders 5 on the right side is located above the No. 2 conveyor belt 3. The No. 1 cylinder 5 on the left side drives the suction cup 6 to move downward, and the negative pressure pump is operated in the suction cup 6 to achieve negative pressure, and the display screen 7 on the end of the No. 1 conveyor belt 1 on the left side is adsorbed. Then the No. 2 cylinder 9 on the left side drives the No. 2 board 10 to move downward, and the No. 2 board 10 drives the power plug 11 and the video connection line 12 to be respectively plugged into the power jack and the video input jack on the back of the display screen 7. At this time, the display screen 7 is powered on, and the computer transmits the detection image to the display screen 7. After that, the No. 1 cylinder 5 on the left side drives the display screen 7 to move upward through the suction cup 6, so that the display screen 7 is separated from the No. 1 conveyor belt 1 on the left side. At the same time, the No. 2 cylinder 9 also drives the No. 2 board 10 to move upward, and to the same height as the display screen 7, to ensure that the power plug 11 and the video connection line 12 can be stably plugged in;

[0084] Step 2: If Figure 3 As shown in b, the forward and reverse motor drives the screw rod 35 to rotate, and the screw rod 35 drives the No. 1 cylinder 5 on the left to move above the left tray 2, and the No. 1 cylinder 5 on the right to move above the right tray 2; at this time, the No. 1 cylinder 5 on the left drives the display screen 7 to move downward and move into the tray 2, and the No. 2 cylinder 9 also drives the No. 2 plate 10 to move downward, and the downward movement height is the same as the downward movement height of the display screen 7; the display screen 7 is placed in the tray 2, and the brightness detector starts to detect the brightness of the display screen 7, and the detection result is transmitted to the backstage central control console for quality inspection personnel to judge. After the detection is completed, the No. 1 cylinder 5 on the left drives the display screen 7 to move upward, and the No. 2 cylinder 9 also drives the No. 2 plate 10 to move upward, and the upward movement height is the same as the upward movement height of the display screen 7;

[0085] Step 3: If Figure 3 As shown in c, the forward and reverse motor drives the screw rod 35 to rotate, and the screw rod 35 drives the No. 1 cylinder 5 on the left to move above the head end of the No. 2 conveyor belt 3, and the No. 1 cylinder 5 on the right moves above the end of the No. 1 conveyor belt 1 on the right; the No. 1 cylinder 5 on the left drives the display screen 7 to move down and lay it flat on the No. 2 conveyor belt 3 which is in the paused operation, the negative pressure pump is paused, the suction cup 6 no longer absorbs the display screen 7, and the display screen 7 falls flat on the No. 2 conveyor belt 3, then the No. 1 cylinder 5 on the left drives the suction cup 6 to move up, and at the same time the No. 2 cylinder 9 on the left drives the No. 2 board 10 to move up, the power plug 11 and the video connection line 12 fall off the display screen 7, and the No. 2 conveyor belt 3 transfers the display screen 7 away;

[0086] During the process of the No. 1 cylinder 5 on the left driving the display screen 7 to unload, the No. 1 cylinder 5 on the right drives the suction cup 6 to move downward, and the negative pressure pump is operated in the suction cup 6 to realize negative pressure, and the display screen 7 on the end of the No. 1 conveyor belt 1 on the right is adsorbed, and then the No. 2 cylinder 9 on the right drives the No. 2 board 10 to move downward, and the No. 2 board 10 drives the power plug 11 and the video connection line 12 to be respectively plugged into the power jack and the video input jack on the back of the display screen 7. At this time, the display screen 7 is powered on, and the computer transmits the detection picture to the display screen 7. After that, the No. 1 cylinder 5 on the right drives the display screen 7 to move upward through the suction cup 6, so that the display screen 7 is separated from the No. 1 conveyor belt 1 on the right. At the same time, the No. 2 cylinder 9 on the right also drives the No. 2 board 10 to move upward, and to the same height as the display screen 7, to ensure that the power plug 11 and the video connection line 12 can be stably plugged in;

[0087] Step 4: If Figure 3 As shown in d, the forward and reverse motor drives the screw rod 35 to rotate in the opposite direction, and the screw rod 35 drives the No. 1 cylinder 5 on the right to move to the top of the right tray 2, and the No. 1 cylinder 5 on the left to move to the top of the left tray 2; at this time, the No. 1 cylinder 5 on the right drives the display screen 7 to move downward and move into the tray 2, and at the same time, the No. 2 cylinder 9 on the right also drives the No. 2 plate 10 to move downward, and the downward movement height is the same as the downward movement height of the display screen 7; the display screen 7 is placed in the tray 2, and the brightness detector starts to detect the brightness of the display screen 7, and the detection results are transmitted to the backstage central control console for quality inspection personnel to judge. After the detection is completed, the No. 1 cylinder 5 on the right drives the display screen 7 to move upward, and at the same time, the No. 2 cylinder 9 also drives the No. 2 plate 10 to move upward, and the upward movement height is the same as the upward movement height of the display screen 7;

[0088] Step 5: If Figure 3As shown in FIG. 5 , the forward and reverse motors drive the screw rod 35 to rotate in the opposite direction, and the screw rod 35 drives the No. 1 cylinder 5 on the right to move to above the head end of the No. 2 conveyor belt 3, and the No. 1 cylinder 5 on the left moves to above the end of the No. 1 conveyor belt 1 on the left, and step one is performed; the No. 1 cylinder 5 on the right drives the display screen 7 to move down and place it flat on the No. 2 conveyor belt 3 which is in suspended operation, the negative pressure pump is suspended, the suction cup 6 no longer adsorbs the display screen 7, and the display screen 7 falls flat on the No. 2 conveyor belt 3, the No. 1 cylinder 5 on the left drives the suction cup 6 to move up, and at the same time, the No. 2 cylinder 9 on the right drives the No. 2 board 10 to move up, the power plug 11 and the video connection line 12 fall off the display screen 7, and the No. 2 conveyor belt 3 transfers the display screen 7 away; after completing step five, an inspection cycle can be completed, and then the above steps one, two, three, four and five are executed in sequence to detect the brightness of the display screen 7.

[0089] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A display screen brightness detection device, characterized in that: It comprises two symmetrically arranged No. 1 conveyor belts (1), two trays (2) are symmetrically arranged between the two No. 1 conveyor belts (1), each tray (2) is provided with a brightness detector, and a No. 2 conveyor belt (3) is provided between the two trays (2); A crossbeam (4) is provided above the two No. 1 conveyor belts (1), and two groups of No. 1 cylinders (5) are slidably connected to the lower surface of the crossbeam (4), and a suction cup (6) is connected to the output end of each No. 1 cylinder (5), and the suction cup (6) is used to absorb the display screen (7); A No. 1 plate (8) is fixedly connected between the cylinder bodies of each group of No. 1 cylinders (5), and a plug-in assembly is arranged below the No. 1 plate (8); The plug-in assembly comprises a No. 2 cylinder (9), the output end of the No. 2 cylinder (9) is fixedly connected to a No. 2 board (10), and the No. 2 board (10) is provided with a power plug (11) for plugging into the display screen (7) and a video connection line (12) for plugging into the display screen (7); The output end of the No. 2 cylinder (9) is also fixedly connected to the No. 3 plate (13), the No. 3 plate (13) is located below the No. 2 plate (10), fixed pins (14) are symmetrically provided on both sides of the lower surface of the No. 3 plate (13), a slide groove (15) is provided on the lower surface of the No. 3 plate (13), a movable pin (16) is provided in the slide groove (15), the movable pin (16) can move along the slide groove (15), and the movable pin (16) and the fixed pin (14) can be inserted into the bolt hole (17) on the back of the display screen (7); Each of the first conveyor belts (1) is provided with a first limit block (18) in the width direction of the surface, and the first limit block (18) is capable of limiting the distance between two adjacent display screens (7); each of the first conveyor belts (1) is provided with a second limit block (19) in the length direction of the surface, and the second limit block (19) is capable of limiting the display screen (7) to be placed in the center on the first conveyor belt (1); The upper end surface of the cylinder body of the No. 2 cylinder (9) is connected to the lower surface of the No. 1 plate (8) via a No. 1 spring (20); A sleeve (21) is provided on the upper surface of the No. 3 plate (13), and the output end of the No. 2 cylinder (9) is slidably connected in the sleeve (21) via a No. 2 spring; The third plate (13) is provided with a guide hole (22) adapted to accommodate the power plug (11) and the video connection cable (12); A sealing strip (23) is provided on the inner wall of the tray (2), the interior of the sealing strip (23) is hollow, and the sealing strip (23) is connected to an external air pump via an air supply pipe (24); A plurality of air jet holes (25) are provided on the inner side wall of the tray box (2), and the exhaust direction of the air jet holes (25) is inclined to point toward the inner bottom surface of the tray box (2); The tray box (2) is provided with a switching component, the switching component can realize the air supply pipe (24) to alternately supply air to the sealing strip (23) and the air injection hole (25), and the switching component comprises a vertical rod (26) and a third spring (27); a sliding hole (28) is vertically provided at a corner position in the tray box (2), one side of each sliding hole (28) is connected to the air supply pipe (24), and the other side of each sliding hole (28) is connected to a first channel (29) of the air injection hole (25) and a second channel (30) connected to the sealing strip (23), and the second channel (30) is located above the first channel (29); The lower end of the vertical rod (26) is slidably connected in the sliding hole (28) via a No. 3 spring (27), and an annular groove (31) is radially provided in the middle of the vertical rod (26).

2. A display screen brightness detection device according to claim 1, characterized in that: A plurality of sealing rings (32) are provided on the outer ring of each vertical rod (26), and the sealing rings (32) are arranged one by one at the lower end of the vertical rod (26) and at the upper and lower sides of the annular groove (31).

3. A display screen brightness detection device according to claim 1, characterized in that: A camera (33) is provided on the lower surface of the second plate (10), and the camera (33) is used to take a photo to obtain a QR code (34) on the back surface of the display screen (7).

Images