Screen hardness testing device for liquid crystal display production

Abstract

The utility model belongs to the technical field of screen hardness testing, particularly relates to a screen hardness testing device for liquid crystal display production, and aims to solve the problems of inaccurate experimental data and small detection range in the background technology, and provides the following scheme: the screen hardness testing device comprises a hardness testing table, and the outer wall of one side of the hardness testing table is rotatably connected with a bidirectional screw rod; and a hand wheel is fixedly connected to the center of the outer wall of the two-way screw rod. The two-way lead screw can be controlled to rotate by rotating the hand wheel, then the distance between the two base plates is adjusted, when the liquid crystal display is placed between the two base plates, no supporting point exists in a bottom detection area of the liquid crystal display, and therefore the accuracy of pressure detection data is improved; the liquid crystal display hardness testing device can be suitable for hardness testing of liquid crystal display screens of different sizes, a pressure sensor and a pressure head can be selectively installed in the side positioning plate and the center positioning plate according to needs, the testing range is expanded, sample data is increased, and the accuracy of experimental data is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of screen hardness testing, in particular to a screen hardness testing device for liquid crystal display production. Background Art

[0002] Liquid crystal display is an active matrix liquid crystal display driven by thin film transistors. It mainly uses electric current to stimulate liquid crystal molecules to produce points, lines, and surfaces, which are combined with backlight tubes to form a picture.

[0003] After searching, the patent (application number: 202021039770.4) discloses a "screen hardness test bench for LCD production". This LCD screen hardness test bench is equipped with a second lifting rod and a fixing plate. The height of the second lifting rod can be adjusted, and the object to be tested can be fixed, making the device more stable. However, there are some problems with this device during use:

[0004] First, the LCD screen in the device is placed directly on the test bench. When the test rod squeezes the LCD screen, the test bench can provide support for the bottom of the LCD screen, which will cause large errors in the experimental data and affect the accuracy of the test.

[0005] In addition, the detection rod can only be fixed at a certain position each time to press the LCD screen downward at a fixed point for fixed-point detection, which has the problems of small detection range and small sample data of the experiment. Utility Model Content

[0006] In view of the deficiencies of the prior art, the utility model provides a screen hardness testing device for liquid crystal display production, which overcomes the deficiencies of the prior art and effectively solves the problems of inaccurate experimental data and small detection range.

[0007] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0008] A screen hardness testing device for liquid crystal display production includes a hardness testing platform, wherein a bidirectional screw is rotatably connected to the outer wall of one side of the hardness testing platform, and a handwheel is fixedly connected to the center of the outer wall of the bidirectional screw. T-blocks are screwed on both sides of the outer wall of the bidirectional screw, and a pad is welded to the outer wall of one end of the T-block;

[0009] A lifting plate is provided on the top outer wall of the hardness testing table, and a rotating column is rotatably connected to the center of the bottom outer wall of the lifting plate, the bottom outer wall of the rotating column is fixedly connected to a center positioning plate, and a threaded rod is screwed on the inner wall of the center positioning plate, the outer wall of one end of the threaded rod is rotatably connected to a side plate, and a pressure sensor is screwed on the bottom inner wall of the side plate, and the bottom outer wall of the pressure sensor is fixedly connected to a pressure head.

[0010] Preferably, the outer walls on both sides of the side plates are welded with limiting rods, and the limiting rods are slidably connected to the inner walls on both sides of the central positioning plate.

[0011] Preferably, a support frame is welded to the top outer wall of the hardness testing bench, and a hydraulic push rod is fixedly connected to the top outer wall of the support frame by screws, and the lifting plate is installed on the piston rod of the hydraulic push rod.

[0012] Preferably, symmetrically distributed guide rods are welded to the outer wall of the top of the lifting plate, and the guide rods are slidably connected to the inner wall of the lifting plate.

[0013] Preferably, a waste outlet is provided on the top outer wall of the hardness testing table, and a waste outlet plate is provided at the bottom of the waste outlet.

[0014] Preferably, an electric control cabinet is installed on the top outer wall of the hardness testing bench, and the electric control cabinet is connected to the pressure sensor and the hydraulic push rod through signal lines.

[0015] Preferably, a liquid crystal display is placed between the two pads.

[0016] The beneficial effects of the utility model are:

[0017] 1. This design of a screen hardness tester for LCD production uses two sliding connection pads inside the test bench. By turning a handwheel, the bidirectional screw can be controlled to rotate, thereby adjusting the spacing between the two pads. When the LCD is placed between the two pads, the bottom test area of the LCD has no support points, thereby increasing the accuracy of the pressure test data and being applicable to hardness tests on LCD screens of different sizes.

[0018] 2. The screen hardness testing device designed for LCD production has a bottom lifting plate. By rotating the threaded rod, the distance between the side plate and the center positioning plate can be adjusted. The pressure sensor and the pressure head can be selectively installed in the side plate and the center positioning plate as needed, which expands the test range, increases the sample data, and improves the accuracy of the experimental data. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a front view of the overall structure of a screen hardness testing device for liquid crystal display production proposed by the present invention;

[0020] Figure 2 This is a rear view of the overall structure of a screen hardness testing device for liquid crystal display production proposed by the present invention;

[0021] Figure 3 This is a schematic diagram of the bidirectional screw connection structure of a screen hardness testing device for liquid crystal display production proposed by the present invention;

[0022] Figure 4 The present invention is a schematic diagram of the lifting plate connection structure of a screen hardness testing device for liquid crystal display production.

[0023] In the figure: 1. Hardness test bench; 2. Bidirectional screw; 3. Handwheel; 4. T-block; 5. Pad; 6. Lifting plate; 7. Rotating column; 8. Center positioning plate; 9. Threaded rod; 10. Side plate; 11. Pressure sensor; 12. Pressure head; 13. Limit rod; 14. Support frame; 15. Hydraulic push rod; 16. Guide rod; 17. Waste discharge plate; 18. Waste discharge port; 19. Electric control cabinet. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0025] Example 1, refer to Figure 3 A screen hardness testing device for liquid crystal display production includes a hardness testing table 1, a bidirectional screw rod 2 is rotatably connected to the outer wall of one side of the hardness testing table 1, and a hand wheel 3 is fixedly connected to the center of the outer wall of the bidirectional screw rod 2, T-blocks 4 are screwed on both sides of the outer wall of the bidirectional screw rod 2, and a pad 5 is welded to the outer wall of one end of the T-block 4.

[0026] In this embodiment, two slidably connected pads 5 are provided inside the hardness testing bench 1. By turning the handwheel 3, the rotation of the bidirectional screw 2 can be controlled to adjust the distance between the two pads 5. When the LCD is placed between the two pads 5, there is no support point in the bottom detection area of the LCD, thereby increasing the accuracy of the pressure detection data and being applicable to hardness tests of LCD screens of different sizes.

[0027] Example 2, refer to Figure 1 A screen hardness testing device for liquid crystal display production, a hardness testing table 1 is provided with a lifting plate 6 on the top outer wall, and a rotating column 7 is rotatably connected to the center of the bottom outer wall of the lifting plate 6, the bottom outer wall of the rotating column 7 is fixedly connected to a center positioning plate 8, and a threaded rod 9 is screwed on the inner wall of the center positioning plate 8, one end of the threaded rod 9 is rotatably connected to the outer wall of the side plate 10, and a pressure sensor 11 is screwed on the bottom inner wall of the side plate 10, and a pressure head 12 is fixedly connected to the bottom outer wall of the pressure sensor 11.

[0028] In this embodiment, at the bottom of the lifting plate 6, the distance between the side plate 10 and the center positioning plate 8 can be adjusted by rotating the threaded rod 9, and the pressure sensor 11 and the pressure head 12 can be selectively installed in the side plate 10 and the center positioning plate 8 as needed, thereby expanding the test range, increasing the sample data, and improving the accuracy of the experimental data.

[0029] Reference Figure 4 The outer walls on both sides of the side plate 10 are welded with limiting rods 13, and the limiting rods 13 are slidably connected to the inner walls on both sides of the center positioning plate 8.

[0030] Reference Figure 1 A support frame 14 is welded to the top outer wall of the hardness test bench 1, and a hydraulic push rod 15 is fixedly connected to the top outer wall of the support frame 14 by screws, and the lifting plate 6 is installed on the piston rod of the hydraulic push rod 15.

[0031] Reference Figure 1 The top outer wall of the lifting plate 6 is welded with symmetrically distributed guide rods 16, and the guide rods 16 are slidably connected to the inner wall of the lifting plate 6.

[0032] Reference Figure 2-3 A waste outlet 18 is provided on the top outer wall of the hardness testing table 1 , and a waste outlet plate 17 is provided at the bottom of the waste outlet 18 .

[0033] Reference Figure 1 An electric control cabinet 19 is installed on the top outer wall of the hardness testing table 1, and the electric control cabinet 19 is connected to the pressure sensor 11 and the hydraulic push rod 15 through signal lines.

[0034] Reference Figure 1 , a liquid crystal display is placed between the two pads 5.

[0035] Working principle: First, according to the size of the LCD screen, the bidirectional screw 2 is controlled to rotate by turning the handwheel 3, and then the distance between the two pads 5 is adjusted so that the LCD can be placed between the two pads 5. Then, according to the area of the LCD to be tested, the distance between the side plate 10 and the center positioning plate 8 is adjusted by turning the threaded rod 9. The pressure sensor 11 and the pressure head 12 can be selectively installed in the side plate 10 and the center positioning plate 8 as needed. Finally, the lifting plate 6 is pushed downward by the hydraulic push rod 15, so that the pressure head 12 squeezes the LCD. The pressure sensor 11 is used to transmit pressure data, and finally the corresponding hardness data is obtained. If the LCD is crushed, it will fall into the waste outlet 18 and be discharged from the waste discharge plate 17.

[0036] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A screen hardness testing device for liquid crystal display production, comprising a hardness testing table (1), characterized in that: A bidirectional screw rod (2) is rotatably connected to the outer wall of one side of the hardness test bench (1), and a hand wheel (3) is fixedly connected to the center of the outer wall of the bidirectional screw rod (2). T-shaped blocks (4) are screwed to both sides of the outer wall of the bidirectional screw rod (2), and a pad (5) is welded to the outer wall of one end of the T-shaped block (4); The top outer wall of the hardness test bench (1) is provided with a lifting plate (6), and the center of the bottom outer wall of the lifting plate (6) is rotatably connected to a rotating column (7), the bottom outer wall of the rotating column (7) is fixedly connected to a center positioning plate (8), and the inner wall of the center positioning plate (8) is screwed with a threaded rod (9), the outer wall of one end of the threaded rod (9) is rotatably connected to a side plate (10), and the bottom inner wall of the side plate (10) is screwed with a pressure sensor (11), and the bottom outer wall of the pressure sensor (11) is fixedly connected to a pressure head (12).

2. A screen hardness testing device for liquid crystal display production according to claim 1, characterized in that: Limiting rods (13) are welded to the outer walls on both sides of the side plates (10), and the limiting rods (13) are slidably connected to the inner walls on both sides of the central positioning plate (8).

3. The screen hardness testing device for liquid crystal display production according to claim 1, characterized in that: A support frame (14) is welded to the top outer wall of the hardness test bench (1), and a hydraulic push rod (15) is fixedly connected to the top outer wall of the support frame (14) by screws, and the lifting plate (6) is installed on the piston rod of the hydraulic push rod (15).

4. The screen hardness testing device for liquid crystal display production according to claim 1, characterized in that: The top outer wall of the lifting plate (6) is welded with symmetrically distributed guide rods (16), and the guide rods (16) are slidably connected to the inner wall of the lifting plate (6).

5. The screen hardness testing device for liquid crystal display production according to claim 1, characterized in that: A waste discharge port (18) is provided on the top outer wall of the hardness testing table (1), and a waste discharge plate (17) is provided at the bottom of the waste discharge port (18).

6. The screen hardness testing device for liquid crystal display production according to claim 1, characterized in that: An electric control cabinet (19) is installed on the top outer wall of the hardness test bench (1), and the electric control cabinet (19) is connected to the pressure sensor (11) and the hydraulic push rod (15) via signal lines.

7. The screen hardness testing device for liquid crystal display production according to claim 1, characterized in that: A liquid crystal display is placed between the two pads (5).

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