CN215932297U

CN215932297U - Testing device for LCD screen

Info

Publication number: CN215932297U
Application number: CN202121384889.XU
Authority: CN
Inventors: 郭万聪; 王建光; 胡志伟
Original assignee: Glad Photoelectricity Co ltd
Current assignee: Glad Photoelectricity Co ltd
Priority date: 2021-06-22
Filing date: 2021-06-22
Publication date: 2022-03-01
Anticipated expiration: 2031-06-22

Abstract

The utility model discloses a testing device of an LCD screen, which relates to the technical field of detection of LCD screens and comprises a workbench, wherein the top of the workbench is fixedly connected with a supporting plate, the top of the supporting plate is fixedly connected with a cover plate, the top of the workbench is provided with a groove, the top of the groove is provided with a placing plate, the bottom of the groove is provided with a strip-shaped groove in a penetrating manner, the top of the cover plate is connected with a moving mechanism, the workbench is internally provided with a fixing mechanism, the moving mechanism comprises an air cylinder, a cross rod, a moving block, a first connecting rod, an electric sliding rail and a vehicle body, and the fixing mechanism comprises a stepping motor, a bidirectional screw rod, a bearing, a sliding rod, a threaded block, a second connecting rod, a sliding block and a fixing clamp. The utility model relates to a testing device of an LCD screen, which can be used for clamping the LCD screen to prevent the LCD screen from being damaged, can be used for clamping the LCD screens with different models and sizes, has a wide application range, can adjust the testing range and improves the testing efficiency and effect.

Description

Testing device for LCD screen

Technical Field

The utility model relates to the technical field of testing of LCD screens, in particular to a testing device of an LCD screen.

Background

The LCD is a liquid crystal display for short, the LCD is constructed by placing liquid crystal in two parallel glass sheets, and there are many vertical and horizontal fine wires between the two glass sheets, and the direction of rod-like crystal molecules is controlled by the electrification or not, and the light is refracted out to generate pictures. Compared with a CRT, the service life is longer, the energy consumption is lower, and the cost is lower. The basic principle of screen display is that liquid crystal material is filled between two parallel plates, and the arrangement of internal molecules of liquid crystal material is changed by means of voltage so as to attain the goal of shading light and transmitting light to display image with different depth and error, and only a filter layer with three-component colour is added between two flat plates, so that it can implement display of colour image.

Testing arrangement of LCD screen in the existing market, most when testing the LCD screen, need fix the LCD screen, but at present can not carry out the fixed test according to the LCD screen of different model sizes, application range is less, can not adapt to the LCD screen of equidimension not, and can not remove when the test and control the test, the LCD screen of test can not test comprehensively, test range is less, the test effect is unsatisfactory, therefore, it is necessary to provide a testing arrangement of LCD screen.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a testing device for an LCD screen, which can effectively solve the problems that in the background technology, most of LCD screens need to be fixed when being tested, but at present, the LCD screens with different models and sizes cannot be fixedly tested, the use range is small, the testing device cannot adapt to the LCD screens with different sizes, the testing device cannot be adjusted by left and right movement during testing, the tested LCD screens cannot be comprehensively tested, the testing range is small, and the testing effect is not ideal.

In order to achieve the purpose, the utility model adopts the technical scheme that: a testing device of an LCD screen comprises a workbench, wherein a supporting plate is fixedly connected to the top of the workbench, a cover plate is fixedly connected to the top of the supporting plate, a groove is formed in the top of the workbench, a placing plate is arranged on the top of the groove, a strip-shaped groove is formed in the bottom of the groove in a penetrating mode, the top of the cover plate is connected with a moving mechanism, a fixing mechanism is arranged inside the workbench, the moving mechanism comprises an air cylinder, a cross rod, a moving block, a first connecting rod, an electric sliding rail and a vehicle body, the top of the cover plate is fixedly connected with the bottom of the air cylinder, a driving end of the air cylinder is fixedly connected with the top of the cross rod, one end of the cross rod is fixedly connected with one end of the moving block, the bottom of the cross rod is fixedly connected with the top of the first connecting rod, the bottom of the first connecting rod is fixedly connected with the top of the electric sliding rail, and the top of the electric sliding rail is provided with the vehicle body, fixed establishment includes step motor, two-way lead screw, bearing, slide bar, thread piece, second connecting rod, slider and mounting fixture, the inside of workstation is provided with step motor, step motor's drive end and the one end fixed connection of two-way lead screw, the other end of two-way lead screw is to rotate with the bearing and is connected, fixedly connected with slide bar directly over the two-way lead screw, the surface cover of two-way lead screw is equipped with the thread piece, the bottom fixed connection of second connecting rod and slider is passed through at the top of thread piece, the top of slider and mounting fixture's bottom fixed connection.

Preferably, the bottom of the vehicle body is provided with a fixing rod, and the bottom of the vehicle body is fixedly connected with a test instrument through the fixing rod.

Preferably, a sliding groove is formed in one side wall of the supporting plate, and the moving block is movably arranged in the sliding groove and slides in the sliding groove.

Preferably, the outer surface of the bidirectional screw rod is symmetrically provided with bidirectional threads at the center, one side of the thread block is provided with a thread groove in a penetrating manner, and the bidirectional screw rod is in threaded connection with the thread block through the thread groove.

Preferably, the inside of workstation has seted up the cavity, the both ends of slide bar and the inner wall fixed connection of cavity, one side of slider is run through and is seted up the through-hole, the slide bar passes through the through-hole and slides mutually with the slider.

Preferably, one end of the bearing is fixedly connected with the inner wall of the cavity, the cross section of the fixing clamp is in a concave arc shape, and a rubber pad is arranged on the concave arc surface of the fixing clamp.

Preferably, the number of the thread blocks, the sliding blocks and the fixing clamps is two, and the thread blocks, the sliding blocks and the fixing clamps are symmetrically distributed on the central axis plane of the bidirectional screw rod.

Compared with the prior art, the utility model has the following beneficial effects:

1. according to the utility model, the stepping motor is started to drive the bidirectional screw rod to rotate, two groups of threaded blocks in threaded connection on the bidirectional screw rod move towards the middle on the bidirectional screw rod through bidirectional threads, the sliding block slides towards the middle on the sliding rod through the second connecting rod due to the movement of the threaded blocks, so that two groups of fixing clamps are driven to move towards the middle, the LCD screen placed on the placing plate is fixedly clamped, the fixing clamps are in a concave arc shape and provided with anti-friction pads, the LCD screen can be protected from being damaged during clamping, the LCD screen is loosened by the reverse rotation of the stepping motor, so that the fixing during testing of the LCD screen is completed, when the LCD screens of different models and sizes are tested, the fixing of the LCD screens of different models and sizes can be completed by the steps, the application range is wide, the clamping is stable, and the LCD screen can be prevented from being damaged.

2. According to the utility model, the air cylinder is started to push the cross rod to move downwards, the cross rod slides downwards on the supporting plate through the moving block and the sliding groove, so that the testing instrument tests the fixed LCD screen, and when other places of the LCD screen need to be tested, the vehicle body is controlled to move left and right on the electric sliding rail, so that the testing instrument can carry out large-range detection on the screen of the LCD screen, and the testing efficiency and effect of the LCD screen are improved.

Drawings

FIG. 1 is a schematic perspective view of an LCD panel testing apparatus according to the present invention;

FIG. 2 is a schematic front sectional view of an LCD panel testing apparatus according to the present invention;

FIG. 3 is a schematic top view of a workbench of a testing device for LCD panel according to the present invention;

FIG. 4 is a schematic view of a top view of an electric slide rail and a vehicle body of the LCD screen testing device of the present invention;

FIG. 5 is an enlarged schematic view of a testing apparatus for LCD panel of the present invention at A in FIG. 2;

fig. 6 is a schematic structural diagram of a supporting plate, a sliding groove and a moving block of a testing device of an LCD screen according to the present invention.

In the figure: 1. a work table; 2. a support plate; 3. a cover plate; 4. a groove; 5. placing the plate; 6. a strip-shaped groove; 7. a cylinder; 8. a cross bar; 9. a moving block; 10. a first connecting rod; 11. an electric slide rail; 12. a vehicle body; 13. testing the instrument; 14. a stepping motor; 15. a bidirectional screw rod; 16. a bearing; 17. a slide bar; 18. A thread block; 19. a second connecting rod; 20. a slider; 21. fixing the clamp; 22. a chute.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further described with the specific embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-6, the utility model is a testing device for an LCD screen, comprising a workbench 1, a supporting plate 2 fixedly connected to the top of the workbench 1, a cover plate 3 fixedly connected to the top of the supporting plate 2, a groove 4 formed in the top of the workbench 1, a placing plate 5 disposed on the top of the groove 4, a strip-shaped groove 6 formed in the bottom of the groove 4, a moving mechanism connected to the top of the cover plate 3, a fixing mechanism disposed inside the workbench 1, the moving mechanism comprising a cylinder 7, a cross bar 8, a moving block 9, a first connecting rod 10, an electric slide rail 11 and a vehicle body 12, the top of the cover plate 3 fixedly connected to the bottom of the cylinder 7, a driving end of the cylinder 7 fixedly connected to the top of the cross bar 8, one end of the cross bar 8 fixedly connected to one end of the moving block 9, the bottom of the cross bar 8 fixedly connected to the top of the first connecting rod 10, the bottom of the first connecting rod 10 fixedly connected to the top of the electric slide rail 11, the top of electronic slide rail 11 is provided with automobile body 12, fixed establishment includes step motor 14, two-way lead screw 15, bearing 16, slide bar 17, screw block 18, second connecting rod 19, slider 20 and mounting fixture 21, the inside of workstation 1 is provided with step motor 14, step motor 14's drive end and two-way lead screw 15's one end fixed connection, two-way lead screw 15's the other end is the rotation with bearing 16 and is connected, fixedly connected with slide bar 17 directly over two-way lead screw 15, two-way lead screw 15's surface cover is equipped with screw block 18, second connecting rod 19 and slider 20's bottom fixed connection is passed through at screw block 18's top, slider 20's top and mounting fixture 21's bottom fixed connection.

Further, the bottom of the vehicle body 12 is provided with a fixing rod, and the bottom of the vehicle body 12 is fixedly connected with a testing instrument 13 through the fixing rod, and is used for testing the screen of the LCD screen.

Further, a sliding groove 22 is formed in one side wall of the supporting plate 2, and the moving block 9 is movably arranged inside the sliding groove 22 and slides inside the sliding groove 22, so that the testing instrument 13 can move downwards to detect the LCD screen conveniently.

Further, the outer surface of the bidirectional screw rod 15 is symmetrically provided with bidirectional threads at the center, one side of the thread block 18 is provided with a thread groove in a penetrating manner, and the bidirectional screw rod 15 is in threaded connection with the thread block 18 through the thread groove, so that the LCD screen can be clamped conveniently.

Further, a cavity is formed in the workbench 1, two ends of the sliding rod 17 are fixedly connected with the inner wall of the cavity, a through hole penetrates through one side of the sliding block 20, the sliding rod 17 slides with the sliding block 20 through the through hole, and stability of the fixing clamp 21 is improved.

Furthermore, one end of the bearing 16 is fixedly connected with the inner wall of the cavity, the cross section of the fixing clamp 21 is in a concave arc shape, and a rubber pad is arranged on the concave arc surface of the fixing clamp 21, so that the screen of the LCD screen cannot be damaged during clamping.

Further, the number of the thread blocks 18, the sliding blocks 20 and the fixing clamps 21 is two, and the thread blocks 18, the sliding blocks 20 and the fixing clamps 21 are symmetrically distributed on the central axis of the bidirectional screw rod 15.

The working principle of the utility model is as follows: when the device is applicable, an LCD screen to be tested is placed on the placing plate 5, then the stepping motor 14 is started, the stepping motor 14 drives the two-way screw rod 15 to rotate, two groups of screw blocks 18 in threaded connection on the two-way screw rod 15 move towards the middle through two-way threads, the screw blocks 18 move to enable the sliding blocks 20 to slide towards the middle on the sliding rods 17 through the second connecting rods 19, so that two groups of fixing clamps 21 are driven to move towards the middle, the LCD screen placed on the placing plate 5 is fixedly clamped, the fixing clamps 21 are in a concave arc shape and are provided with rubber pads, the LCD screen can be protected from being damaged when being clamped, the LCD screen can be loosened through the reverse rotation of the stepping motor 14, so that the fixing of the LCD screen can be completed, when the LCD screens with different models and sizes are tested, the fixing of the LCD screens with different models and sizes can be completed through the above steps, application scope is extensive, and press from both sides and get stably, can guarantee that the LCD screen can not damage, then through starting cylinder 7, cylinder 7 promotes horizontal pole 8 and moves down, horizontal pole 8 passes through movable block 9 and spout 22 and slides down on backup pad 2, thereby make testing instrument 13 test fixed LCD screen, when the other places that need test LCD screen, move about on electronic slide rail 11 through control automobile body 12, admittedly can make testing instrument 13 detect the screen of LCD screen on a large scale, improve the test efficiency and the effect of LCD screen, wherein the model of cylinder 7 is JIAJNHO, step motor 14's model is YNK57XN 55-03A.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A testing device of an LCD screen is characterized in that: the automatic cutting machine comprises a workbench (1), wherein a supporting plate (2) is fixedly connected to the top of the workbench (1), a cover plate (3) is fixedly connected to the top of the supporting plate (2), a groove (4) is formed in the top of the workbench (1), a placing plate (5) is arranged on the top of the groove (4), a strip-shaped groove (6) is formed in the bottom of the groove (4) in a penetrating mode, the top of the cover plate (3) is connected with a moving mechanism, and a fixing mechanism is arranged inside the workbench (1);

the moving mechanism comprises an air cylinder (7), a cross rod (8), a moving block (9), a first connecting rod (10), an electric sliding rail (11) and a vehicle body (12), the top of the cover plate (3) is fixedly connected with the bottom of the air cylinder (7), the driving end of the air cylinder (7) is fixedly connected with the top of the cross rod (8), one end of the cross rod (8) is fixedly connected with one end of the moving block (9), the bottom of the cross rod (8) is fixedly connected with the top of the first connecting rod (10), the bottom of the first connecting rod (10) is fixedly connected with the top of the electric sliding rail (11), and the vehicle body (12) is arranged at the top of the electric sliding rail (11);

fixing mechanism includes step motor (14), two-way lead screw (15), bearing (16), slide bar (17), thread block (18), second connecting rod (19), slider (20) and mounting fixture (21), the inside of workstation (1) is provided with step motor (14), the drive end of step motor (14) and the one end fixed connection of two-way lead screw (15), the other end and bearing (16) of two-way lead screw (15) are to rotate and are connected, fixedly connected with slide bar (17) directly over two-way lead screw (15), the surface cover of two-way lead screw (15) is equipped with thread block (18), the bottom fixed connection of second connecting rod (19) and slider (20) is passed through at the top of thread block (18), the bottom fixed connection of the top of slider (20) and mounting fixture (21).

2. The LCD panel testing apparatus of claim 1, wherein: the bottom of automobile body (12) is provided with the dead lever, the bottom of automobile body (12) is through dead lever fixedly connected with test instrument (13).

3. The LCD panel testing apparatus of claim 1, wherein: a sliding groove (22) is formed in one side wall of the supporting plate (2), and the moving block (9) is movably arranged in the sliding groove (22) and slides in the sliding groove (22).

4. The LCD panel testing apparatus of claim 1, wherein: the outer surface of the bidirectional screw rod (15) is symmetrically provided with bidirectional threads at the center, one side of the thread block (18) is provided with a thread groove in a penetrating mode, and the bidirectional screw rod (15) is in threaded connection with the thread block (18) through the thread groove.

5. The LCD panel testing apparatus of claim 1, wherein: the cavity is formed in the workbench (1), the two ends of the sliding rod (17) are fixedly connected with the inner wall of the cavity, a through hole is formed in one side of the sliding block (20) in a penetrating mode, and the sliding rod (17) slides with the sliding block (20) through the through hole.

6. The LCD panel testing apparatus of claim 1, wherein: one end of the bearing (16) is fixedly connected with the inner wall of the cavity, the cross section of the fixing clamp (21) is in a concave arc shape, and a rubber pad is arranged on the concave arc surface of the fixing clamp (21).

7. The LCD panel testing apparatus of claim 1, wherein: the number of the thread blocks (18), the sliding blocks (20) and the fixing clamps (21) is two, and the thread blocks (18), the sliding blocks (20) and the fixing clamps (21) are symmetrically distributed on the middle axial plane of the bidirectional screw rod (15).