A four-point bending test device for LCD screens

Abstract

The utility model relates to a kind of LCD screen four-point bending test device in screen detection field, including base and the lift plate that can slide up and down, the base is equipped with the drive assembly that is cooperated with the lift plate, the base and the lift plate are equipped with synchronous adjusting assembly, the base and the lift plate are respectively equipped with the drive piece that is connected with the synchronous adjusting assembly cooperation, the synchronous adjusting assembly is symmetrically provided with the adjustable block that can slide, detachable pressure block is installed on the adjustable block.The utility model is driven lift plate to slide up and down by the cooperation of base and drive assembly, so that the pressure block on lift plate and base is mutually matched, the bending test to screen is realized.And by the cooperation of synchronous adjusting assembly and drive piece, the pressure block can automatically carry out synchronous adjustment, to adapt to the bending test of different screen, in addition, by detachable pressure block, user can quickly replace different pressure block, to adapt to different test demand.

Description

Technical Field

[0001] This utility model relates to the field of screen testing, specifically to a four-point bending test device for LCD screens. Background Technology

[0002] As a crucial component of electronic devices, screens play a key role in converting electrical signals into visually perceptible images. They are widely used in various consumer electronics, industrial equipment, and medical instruments. To ensure the quality and reliability of screens during manufacturing and use, conducting various performance tests is essential. The four-point bending test is an important method for evaluating the durability and deformation capacity of screens under external bending forces. Using a four-point bending test device, various bending conditions that screens might experience in real-world applications can be simulated, thereby accurately assessing their durability and deformation capacity. This ensures the manufacturing quality of the screen and enhances the product's market competitiveness.

[0003] While existing four-point bending test devices can adjust the pressure block to meet the testing needs of different screens, their adjustment methods are often complex, requiring manual adjustment of each block individually. This makes the operation cumbersome, inefficient, and affects the accuracy and consistency of the test. Therefore, this invention proposes an automatically adjustable four-point bending test device for LCD screens. Summary of the Invention

[0004] This invention provides a four-point bending test device for LCD screens. Through the cooperation of the driving component and the synchronous adjustment component, the pressure block is automatically adjusted, solving the problems of cumbersome operation and low efficiency of existing four-point bending test devices.

[0005] The objective of this utility model is achieved through the following means:

[0006] A four-point bending test device for an LCD screen includes a base and a sliding lifting plate. The base is provided with a drive component that cooperates with the lifting plate. Both the base and the lifting plate are provided with a synchronous adjustment component. The base and the lifting plate are respectively provided with a drive component that connects and cooperates with the synchronous adjustment component. The synchronous adjustment component is symmetrically provided with sliding adjustment blocks, and the adjustment blocks are equipped with detachable pressure blocks.

[0007] Furthermore, the synchronous adjustment assembly includes a fixed frame and a bidirectional lead screw that is connected and cooperates with the drive component. The bidirectional lead screw is rotatably mounted on the fixed frame, and the adjustment block is provided with a sliding nut that slides and cooperates with the bidirectional lead screw.

[0008] Furthermore, the fixing frame is provided with guide rods on both sides, and the adjusting block is provided with guide sleeves on both sides that cooperate with the guide rods.

[0009] Furthermore, one end of the fixing frame is provided with a connecting block, and both the lifting plate and the base are provided with support blocks that cooperate with the connecting block.

[0010] Furthermore, the drive assembly includes a drive screw and a support frame. The drive screw is rotatably mounted on the support frame, and the support frame is provided with a drive motor that cooperates with the drive screw. The lifting plate is provided with a transmission nut that cooperates with the drive screw.

[0011] Furthermore, both sides of the adjusting block are provided with limiting blocks that cooperate with the pressing block, and both ends of the pressing block are provided with limiting grooves that cooperate with the limiting blocks.

[0012] Furthermore, the limiting block is provided with an opening groove and a waist-shaped groove that cooperate with the pressing block and the adjusting block, respectively.

[0013] Furthermore, the base is provided with several through slots, and a waste collection box is provided at the lower end of the through slots. The waste collection box is slidably installed at the lower end of the base.

[0014] The beneficial effects of this utility model are as follows: Through the cooperation of the base and the drive component, the lifting plate slides up and down, allowing the lifting plate and the pressure block on the base to cooperate and achieve screen bending testing. Furthermore, through the cooperation of the synchronization adjustment component and the drive component, the pressure block can automatically adjust synchronously to adapt to bending tests on different screens. In addition, the detachable pressure block allows users to quickly replace different pressure blocks to suit different testing needs. Attached Figure Description

[0015] Figure 1 This is a first structural schematic diagram of a four-point bending test device for an LCD screen according to the present invention;

[0016] Figure 2 This is a schematic diagram of the second structure of the LCD screen four-point bending test device of this utility model;

[0017] Figure 3 for Figure 2 Enlarged diagram of A in the middle;

[0018] Figure 4 This is a cross-sectional view of a four-point bending test device for an LCD screen according to the present invention.

[0019] Figure 5 for Figure 4 Enlarged diagram of B in the middle;

[0020] Figure 6 for Figure 4 Enlarged diagram of C in the middle;

[0021] Figure 7 This is a schematic diagram of the limiting block in this utility model;

[0022] The reference numerals in the figure are as follows: 1-base, 11-through groove, 12-waste collection box, 2-lifting plate, 21-transmission nut, 3-drive assembly, 31-drive screw, 32-support frame, 33-drive motor, 4-synchronous adjustment assembly, 41-fixed frame, 411-guide rod, 412-connecting block, 42-double-acting screw, 5-drive component, 6-adjusting block, 61-sliding nut, 62-guide sleeve, 63-limiting block, 631-opening groove, 632-waisted groove, 7-pressure block, 71-limiting groove, 8-support block. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0024] In this embodiment, refer to Figures 1-7 The present invention relates to a four-point bending test device for an LCD screen, comprising a base 1 and a sliding lifting plate 2. The base 1 has a drive assembly 3 that cooperates with the lifting plate 2. Both the base 1 and the lifting plate 2 have synchronous adjustment assemblies 4. The base 1 and the lifting plate 2 each have drive components 5 that connect and cooperate with the synchronous adjustment assemblies 4. Sliding adjustment blocks 6 are symmetrically arranged on the synchronous adjustment assemblies 4, and detachable pressure blocks 7 are mounted on the adjustment blocks 6. During the test, the LCD screen is placed at a predetermined position between the base 1 and the lifting plate 2. Through the cooperation of the drive assembly 3 and the base 1, the lifting plate 2 drives the pressure block 7 located at its lower end to slide up and down, thereby cooperating with the pressure block 7 on the base 1 to achieve the four-point bending test of the LCD screen. Furthermore, the detachable pressure block 7 design allows users to easily replace pressure blocks 7 of different sizes or shapes according to the bending test requirements of different screen models.

[0025] The synchronous adjustment assembly 4 includes a fixed frame 41 and a bidirectional lead screw 42 connected to the drive component 5. The bidirectional lead screw 42 is rotatably mounted on the fixed frame 41. Both ends of the bidirectional lead screw 42 are provided with bearing seats, and rolling bearings are installed inside the bearing seats. The rolling bearings cooperate with the fixed frame 41 to ensure smooth rotation of the bidirectional lead screw 42. The drive component 5 is connected to the bidirectional lead screw 42 via a coupling or belt. Both the base 1 and the lifting plate 2 are provided with mounting brackets for installing the drive component 5. The adjusting block 6 is provided with a sliding nut 61 that slides with the bidirectional lead screw 42. When the adjusting block 6 needs to be adjusted, the drive component 5 drives the bidirectional lead screw 42 to rotate, and the sliding nut 61 engages with the threaded connection of the bidirectional lead screw 42, causing the two adjusting blocks 6 to move in opposite directions, thereby achieving synchronous adjustment of the pressure block 7.

[0026] The fixed frame 41 has guide rods 411 on both sides, and the adjusting block 6 has guide sleeves 62 on both sides that cooperate with the guide rods 411. Through the cooperation of the guide rods 411 and the guide sleeves 62, the adjusting block 6 can slide stably on the fixed frame 41, thereby ensuring the stability of the adjusting block 6 during movement.

[0027] One end of the fixed frame 41 is provided with a connecting block 412, and both the lifting plate 2 and the base 1 are provided with support blocks 8 that cooperate with the connecting block 412. A pin is provided on one side of the connecting block 412, and a pin hole is provided through the support block 8 to cooperate with the pin. Through the cooperation of the pin and the pin hole, the connection and disassembly between the fixed frame 41 and the support block 8 can be easily realized, thereby facilitating the installation and maintenance of the entire synchronous adjustment assembly 4. At the same time, the design of the pin and the pin hole also ensures the firmness of the connection between the fixed frame 41 and the support block 8, preventing the test results from being affected by the shaking of the fixed frame 41 during testing.

[0028] The drive assembly 3 includes a drive screw 31 and a support frame 32. The drive screw 31 is rotatably mounted on the support frame 32. The support frame 32 is equipped with a drive motor 33 that cooperates with the drive screw 31. The lifting plate 2 is equipped with a transmission nut 21 that cooperates with the drive screw 31. The support frame 32 is fixedly mounted to both sides of the base 1 by bolts. The two ends of the drive screw 31 are equipped with bearing seats that connect and cooperate with the support frame 32. Bearings are installed in the bearing seats, and the drive screw 31 can rotate smoothly through the cooperation of the bearings with the support frame 32. The support frame 32 is equipped with a motor mount for mounting the drive motor 33. The drive motor 33 is connected to the drive screw 31 through a coupling or belt transmission method. When it is necessary to adjust the position of the lifting plate 2, the drive motor 33 drives the drive screw 31 to rotate, and the lifting plate 2 slides up and down through the threaded cooperation of the transmission nut 21 with the drive screw 31. The selection of the drive motor 33 must take into account the actual load conditions to ensure that it has sufficient torque and speed to meet the position adjustment requirements of the lifting plate 2. This ensures the stability and reliability of the entire testing device during operation.

[0029] Both sides of the adjusting block 6 are provided with limiting blocks 63 that cooperate with the pressure block 7, and both ends of the pressure block 7 are provided with limiting grooves 71 that cooperate with the limiting blocks 63. The limiting blocks 63 are respectively provided with an open groove 631 and an oblong groove 632 that cooperate with the pressure block 7 and the adjusting block 6. Through the cooperation of the limiting blocks 63 and the limiting grooves 71, the pressure block 7 can be quickly installed and removed, and the pressure block 7 will not shake or fall off during the test, thereby ensuring the accuracy of the test results. The design of the open groove 631 allows the limiting blocks 63 to easily snap into the limiting grooves 71 of the pressure block 7. The limiting blocks 63 are installed on both sides of the adjusting block 6 through the cooperation of the oblong grooves 632 and bolts. The design of the oblong grooves 632 allows the limiting blocks 63 to slide on the adjusting block 6, so that the pressure block 7 can be quickly fixed or removed by tightening the bolts. This improves the flexibility and convenience of the entire testing device.

[0030] The base 1 has several through slots 11, and a waste collection bin 12 is located at the lower end of each through slot 11. The waste collection bin 12 is slidably installed at the lower end of the base 1. The through slots 11 allow screen fragments generated during testing to fall directly into the waste collection bin 12, making it convenient for users to clean. The slidable installation of the waste collection bin 12 at the lower end of the base 1 allows users to easily pull out and clean it, further improving user convenience.

[0031] The base 1 also features an openable door panel, one side of which is connected to the base 1 via a hinge, allowing the door to open and close. A transparent observation window is provided on the door panel, allowing users to directly observe the LCD screen status during the test, thus monitoring the test progress and results at any time. The transparent observation window is made of high-strength, high-transmittance plastic material, ensuring it will not break due to impact from LCD screen fragments during the test, while also guaranteeing the clarity of the window so that users can clearly observe the test process.

[0032] One side of the waste collection bin 12 is equipped with a transparent panel, the same as the door panel. The degree of waste accumulation can be observed through the transparent panel, so that it can be cleaned in time to avoid excessive waste accumulation affecting the use of the testing device.

[0033] The beneficial effects of this utility model are as follows: Through the cooperation of the base 1 and the drive component 3, the lifting plate 2 slides up and down, allowing the lifting plate 2 and the pressure block 7 on the base 1 to cooperate and achieve screen bending testing. Furthermore, through the cooperation of the synchronous adjustment component 4 and the drive component 5, the pressure block 7 can automatically adjust synchronously to adapt to bending tests of different screens. In addition, the detachable pressure block 7 allows users to quickly replace different pressure blocks 7 to meet different testing needs.

[0034] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the present utility model without departing from the scope of the present utility model shall fall within the scope of the present utility model.

Claims

1. A four-point bending test device for an LCD screen, comprising a base (1) and a vertically sliding lifting plate (2), wherein the base (1) is provided with a driving assembly (3) that cooperates with the lifting plate (2), characterized in that: Both the base (1) and the lifting plate (2) are provided with a synchronous adjustment component (4). The base (1) and the lifting plate (2) are respectively provided with a driving component (5) that connects and cooperates with the synchronous adjustment component (4). The synchronous adjustment component (4) is symmetrically provided with a sliding adjustment block (6). The adjustment block (6) is equipped with a detachable pressure block (7).

2. The LCD screen four-point bending test device according to claim 1, characterized in that: The synchronous adjustment assembly (4) includes a fixed frame (41) and a bidirectional lead screw (42) connected and cooperating with the drive component (5). The bidirectional lead screw (42) is rotatably mounted on the fixed frame (41), and the adjustment block (6) is provided with a sliding nut (61) that is slidably cooperating with the bidirectional lead screw (42).

3. The LCD screen four-point bending test device according to claim 2, characterized in that: The fixing frame (41) is provided with guide rods (411) on both sides, and the adjusting block (6) is provided with guide sleeves (62) on both sides that cooperate with the guide rods (411).

4. The LCD screen four-point bending test device according to claim 2, characterized in that: One end of the fixed frame (41) is provided with a connecting block (412), and both the lifting plate (2) and the base (1) are provided with a support block (8) that cooperates with the connecting block (412).

5. The LCD screen four-point bending test device according to claim 1, characterized in that: The drive assembly (3) includes a drive screw (31) and a support frame (32). The drive screw (31) is rotatably mounted on the support frame (32). The support frame (32) is provided with a drive motor (33) that cooperates with the drive screw (31). The lifting plate (2) is provided with a transmission nut (21) that cooperates with the drive screw (31).

6. The LCD screen four-point bending test device according to claim 1, characterized in that: The adjusting block (6) has a limiting block (63) on both sides that cooperates with the pressing block (7), and the pressing block (7) has a limiting groove (71) at both ends that cooperates with the limiting block (63).

7. The LCD screen four-point bending test device according to claim 6, characterized in that: The limiting block (63) is provided with an opening groove (631) and a waist-shaped groove (632) that cooperate with the pressing block (7) and the adjusting block (6).

8. The LCD screen four-point bending test device according to any one of claims 1-7, characterized in that: The base (1) is provided with a plurality of through slots (11), and a waste collection box (12) is provided at the lower end of the through slots (11). The waste collection box (12) is slidably installed at the lower end of the base (1).

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