Device for testing strength of liquid crystal curved screen

Abstract

The invention discloses a liquid crystal curved screen strength testing device, and relates to the technical field of liquid crystal curved screen detection, the liquid crystal curved screen strength testing device comprises a detection table and a detection clamp, the detection clamp comprises two groups of symmetrically arranged sliding positioning tools, the detection clamp further comprises a butt clamping mechanism and a top pressing mechanism, and the butt clamping mechanism comprises a top pushing plate and a driving mechanism used for transversely moving the top pushing plate; and the jacking and pressing mechanism comprises a jacking and pressing ball and a linkage sliding mechanism for driving the jacking and pressing ball to transversely move. The driving mechanism drives the two pushing and ejecting plates to oppositely clamp towards the middle, extrusion from the edges of the two sides of the curved screen is achieved, transverse bending strength detection is achieved, and when the driving mechanism drives the two pushing and ejecting plates to reset, the pushing and ejecting plates act on the distributed one-way baffles through the arranged linkage plates in an extrusion mode. The corresponding supporting sliding plates are driven by the one-way baffles to slide, so that the top pressing balls complete bending strength detection in the vertical direction, bending strength detection in different directions can be rapidly completed, and the detection efficiency and the operation convenience are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of liquid crystal curved screen detection, and in particular to a liquid crystal curved screen strength testing device. Background Art

[0002] Curved LCD screens need to undergo multiple strength tests after production to ensure their mechanical stability, environmental adaptability and long-term reliability. Since their shape has a certain curvature, bending strength testing is one of the routine testing items.

[0003] When testing the bending strength of existing curved LCD screens, the curved screen is generally positioned using a fixture, and then two parallel pressure plates are used to squeeze inward from both sides of the screen, gradually increasing the applied pressure and observing whether the screen is damaged, thereby judging the bending strength of the screen.

[0004] The shortcomings of the existing curved LCD screen anti-bending detection equipment are: when the above-mentioned existing curved LCD screen is subjected to bending detection, pressure is mainly applied from both sides of the screen to the middle. However, since the curved LCD screen has a certain curvature as a whole and there is a curved arch in the middle, it is easy to be squeezed during use or transportation. However, the current existing detection equipment cannot continuously complete the squeezing detection in the two side directions and the middle vertical direction, and separate detection operations need to be performed through different devices, which makes the detection operation inconvenient and the detection efficiency low. Summary of the invention

[0005] The purpose of the present invention is to provide a liquid crystal curved screen strength testing device to solve the technical problems in the prior art that the curved liquid crystal screen anti-bending testing equipment cannot continuously complete strength testing in the two side directions and the middle vertical direction, and has inconvenient testing operation and low testing efficiency.

[0006] The technical problem to be solved by the present invention can be achieved by the following technical solutions:

[0007] A liquid crystal curved screen strength testing device comprises a testing platform and a testing fixture, wherein the testing fixture comprises two sets of symmetrically arranged sliding positioning tools, the two sets of sliding positioning tools are used to position the curved screen on the testing platform, and further comprises:

[0008] The clamping mechanism includes a push plate and a driving mechanism for lateral movement of the push plate, and two push plates are provided, each for pushing a corresponding sliding positioning tool;

[0009] The pressing mechanism comprises a pressing ball and a linkage sliding mechanism for driving the pressing ball to move laterally. The movement directions of the pressing ball and the pushing plate are perpendicular to each other. The pressing ball is used to vertically extrude the arched position of the curved screen. The linkage sliding mechanism comprises a one-way baffle and a sliding support. One side of the two pushing plates is fixedly provided with a linkage plate matched with the one-way baffle. The sliding support is connected to the pressing ball. A transmission mechanism is provided between the one-way baffle and the sliding support.

[0010] Preferably, the transmission mechanism includes a linkage rod and a supporting slide plate, two of the supporting slide plates and the linkage rod are provided, first connecting grooves are provided on both sides of the detection platform, each of the supporting slide plates is slidably connected to the first connecting grooves, a plurality of one-way baffles are equidistantly distributed on the side of each supporting slide plate close to the corresponding ejecting plate, each of the one-way baffles is movably connected to the corresponding ejecting plate through a rebound hinge, a limiting block is provided on the side of each one-way baffle away from the top pressing ball, one end of each linkage rod is movably connected to the corresponding supporting slide plate through a hinge, and the other end is movably connected to the sliding support member through a hinge.

[0011] Preferably, the sliding support member includes a linkage slide, and the detection platform is also provided with a second connecting slide perpendicular to the first connecting slide. The linkage slide is slidably connected to the second connecting slide, and a limiting spring is also connected between the linkage slide and the second connecting slide. The top pressure ball moves synchronously with the linkage slide; the end of the linkage rod away from the supporting slide is movably connected to the linkage slide through a hinge.

[0012] Preferably, one side of each of the supporting slides is fixedly connected to an electric telescopic rod, the telescopic end of the electric telescopic rod is fixedly connected to a lifting plate, and the limit blocks distributed on each of the supporting slides are fixedly connected to the corresponding lifting plate.

[0013] Preferably, an adjusting screw is threadedly connected to the linkage slide, and the pressing ball is arranged at one end of the adjusting screw close to the curved screen.

[0014] Preferably, a first pressure monitoring mechanism is arranged between the top pressure ball and the end of the adjusting screw, and the first pressure monitoring mechanism includes an installation cavity and a first pressure sensor. The installation cavity is opened at one end of the adjusting screw close to the top pressure ball. A guide rod is fixedly connected to the top pressure ball, and the guide rod slides through the installation cavity. A first supporting spring is also connected between the guide rod and the installation cavity. The first pressure sensor is fixedly installed on the inner bottom of the installation cavity and is aligned with the guide rod.

[0015] Preferably, each of the push-up plates is provided with a second pressure monitoring mechanism on one side close to the sliding positioner, the second pressure monitoring mechanism includes an auxiliary push plate and a second pressure sensor, the auxiliary push plate is arranged in parallel on the side of the push-up plate close to the sliding positioner, both ends of the auxiliary push plate are fixedly connected with mounting columns, and the mounting columns pass through the push-up plate, the mounting columns can slide relative to the push-up plate, a second supporting spring is connected between the mounting columns and the push-up plate, the second pressure sensor is fixedly mounted on the push-up plate, and the second pressure sensor is aligned and matched with the auxiliary push plate.

[0016] Preferably, each group of the sliding positioning devices includes a right-angle plate and an adjustment clamp, an installation groove is opened on the inner wall of one side of the right-angle plate, the adjustment clamp is slidably connected to the installation groove, and a threaded pushing piece for pushing up the adjustment clamp is also provided on one side of the right-angle plate; a third connecting groove is opened in the middle position of the detection table, and the right-angle plate of each group of the sliding positioning devices is slidably connected to the third connecting groove.

[0017] Preferably, the threaded ejector comprises a mounting block and an adjusting bolt, wherein the mounting block is fixedly arranged on one side of the right-angle plate, the adjusting bolt passes through the mounting block and is threadedly connected to the mounting block, and one end of the adjusting bolt is used to push the adjusting clamp.

[0018] Preferably, the driving mechanism includes a connecting guide rail and a driving screw, the connecting guide rail is fixedly connected to the detection table through a bracket, the tops of the two ejection plates are slidably connected to the connecting guide rail, a driving motor is fixedly installed on one side of the connecting guide rail, and the main shaft end of the driving motor is fixedly connected to the driving screw, the driving screw passes through the tops of the two ejection plates in sequence, and the ejection plates are threadedly connected to the driving screw.

[0019] Beneficial effects of the present invention:

[0020] 1. The present invention drives two push plates to clamp toward the middle through a driving mechanism, so as to realize extrusion from the edges of both sides of the curved screen and realize transverse anti-bending strength detection. When the driving mechanism drives the two push plates to reset, the push plates rely on the arranged linkage plates to squeeze the distributed one-way baffles. At this time, the one-way baffles are restricted by the limit blocks and cannot deflect, thereby driving the corresponding supporting slide plates to slide under the pushing action. The supporting slide plates rely on the linkage rods to pull the arranged pressing balls to squeeze the arched position in the middle of the curved screen in the vertical direction, so as to realize the anti-bending strength detection in the vertical direction, facilitate the rapid completion of the anti-bending strength detection in different directions, and improve the detection efficiency and the convenience of operation.

[0021] 2. The present invention positions curved screens of different widths by two slidable right-angle plates, and an adjustment clamp is also provided on the right-angle plate to facilitate cooperation with the right-angle plate to effectively clamp the edge of the curved screen. Due to the presence of the right-angle plate, it is convenient to contact the push plate with the plane, so that the push plate can effectively squeeze the curved screen and avoid direct contact with the edge of the curved screen with a certain curvature, which affects the squeezing detection effect.

[0022] 3. The push ball and the push plate of the present invention are both provided with corresponding pressure monitoring mechanisms, which facilitates pressure monitoring during the extrusion test process and prevents the pressure from being too high or too low, thereby affecting the accuracy of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the structure of the top pressure ball and the supporting slide plate in the present invention;

[0025] Figure 3 It is a schematic diagram of the structure of the push plate and the auxiliary push plate in the present invention;

[0026] Figure 4 It is a schematic diagram of the structure of the right-angle plate and the adjustment clamping plate in the present invention;

[0027] Figure 5 It is a schematic diagram of the structure of the one-way baffle and the supporting slide plate in the present invention;

[0028] Figure 6 It is a schematic diagram of the structure of the connection between the limit stopper and the supporting slide plate in the present invention;

[0029] Figure 7 It is a partial structural schematic diagram of the connection between the top pressure ball and the adjusting screw in the present invention;

[0030] Figure 8 It is a schematic diagram of the top view structure of the force detection of the curved screen in the X-axis direction in the present invention;

[0031] Fig. 9 It is a schematic diagram of the top view structure of the force detection of the curved screen in the Y-axis direction in the present invention.

[0032] Description of reference numerals:

[0033] 1. Inspection table; 2. Right-angle plate; 3. Third connecting slide; 4. Linkage slide; 5. Pressing ball; 6. Adjusting screw; 7. Second connecting slide; 8. Limiting spring; 9. Connecting guide rail; 10. Driving screw; 11. Driving motor; 12. Pushing plate; 13. First connecting slide; 14. Support slide; 15. Linkage rod; 16. Linkage plate; 17. Adjusting splint; 18. Mounting block; 19. Adjusting bolt; 20. Auxiliary top plate; 21. Mounting column; 22. Second supporting spring; 23. Second pressure sensor; 24. One-way baffle; 25. Limiting block; 26. Lifting plate; 27. Electric telescopic rod; 28. Guide rod; 29. ​​Mounting cavity; 30. First supporting spring; 31. First pressure sensor; 32. Curved screen. DETAILED DESCRIPTION

[0034] The specific embodiments of the present invention are described in detail below, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.

[0035] like Figure 1-Figure 9 As shown, a liquid crystal curved screen strength test device is mainly used to test the bending strength of the curved screen 32. The device includes a test platform 1 and a test fixture. The test fixture includes two sets of symmetrically arranged sliding positioners. The two sets of sliding positioners are used to position the curved screen 32 on the test platform 1. The device also includes: a clamping mechanism and a pressing mechanism. The clamping mechanism includes a push plate 12 and a driving mechanism for lateral movement of the push plate 12. The push plate 12 is provided with two pieces, which are respectively used to push the corresponding sliding positioners, so that the two sets of sliding positioners press the curved screen 32 along the X-axis direction of the coordinate system shown in the figure, and test the bending strength of the curved screen 32 when it is subjected to force from both sides.

[0036] The pressing mechanism includes a pressing ball 5 and a linkage sliding mechanism for driving the pressing ball 5 to move horizontally. The movement directions of the pressing ball 5 and the pushing plate 12 are perpendicular to each other. The pressing ball 5 is used to vertically extrude the arched position of the curved screen 32. The linkage sliding mechanism includes a one-way baffle 24 and a sliding support. A linkage plate 16 matching the one-way baffle 24 is fixedly arranged on one side of the two pushing plates 12. The sliding support is connected to the pressing ball 5. A transmission mechanism is arranged between the one-way baffle 24 and the sliding support. When the two pushing plates 12 move toward each other, the linkage plate 16 squeezes through the one-way baffle 24, and the transmission mechanism has no transmission effect on the sliding support. When the two pushing plates 12 move away from each other, the linkage plate 16 pushes the one-way baffle 24, and the one-way baffle 24 drives the sliding support to move through the transmission mechanism.

[0037] In some specific embodiments, in combination Figure 2 , Figure 5 and Figure 8As shown, the transmission mechanism includes a linkage rod 15 and a support slide 14, two of the support slide 14 and the linkage rod 15 are provided, first connecting grooves 13 are provided on both sides of the detection platform 1, each supporting slide 14 is slidably connected to the first connecting groove 13 through a U-shaped slide, the sliding direction of the support slide 14 is the same as the sliding direction of the push plate 12, and a plurality of one-way baffles 24 are equidistantly distributed on the side of each support slide 14 close to the corresponding push plate 12, each one-way baffle 24 is movably connected to the corresponding push plate 12 through a rebound hinge, and a limited stopper 25 is provided on the side of each one-way baffle 24 away from the top pressure ball 5, one end of each linkage rod 15 is movably connected to the corresponding support slide 14 through a hinge, and the other end is movably connected to the sliding support through a hinge.

[0038] Among them, the sliding support member includes a linkage slide 4, and a second connecting slide 7 vertically distributed with the first connecting slide 13 is also provided on the detection table 1. The linkage slide 4 is slidably connected to the second connecting slide 7 through a slide, and the linkage slide 4 is also connected to the second connecting slide 7 through the slide. A compressible limit spring 8 is also connected between the slide and the second connecting slide 7, and the pressing ball 5 moves synchronously with the linkage slide 4; the end of the linkage rod 15 away from the supporting slide 14 is movably connected to the linkage slide 4 through a hinge.

[0039] After the curved screen 32 is positioned on the test platform 1 by means of two sets of sliding positioning tools, the push plates 12 on both sides are driven by the driving mechanism to clamp toward the middle, thereby respectively squeezing the corresponding sliding positioning tools to achieve the squeezing effect in the X-axis direction, and the bending strength of the curved screen 32 in the X-axis direction is tested. In this process, the linkage plate 16 moves with the push plate 12, squeezing through the one-way baffle 24 distributed on the supporting slide plate 14, and the one-way baffle 24 can deflect normally during the squeezing process. After the X-axis direction is detected without abnormality, the driving mechanism drives the push plates 12 on both sides to move back to reset. During this process, the linkage plate 16 on each push plate 12 acts on the one-way baffle 24 in the opposite direction. At this time, the one-way baffle 24 is blocked by the corresponding limit block 25 and cannot deflect. In this way, the linkage plate 16 contacts the one-way baffle 24, thereby pushing the support slide plate 14 to slide horizontally along the second connecting slide groove 7. Therefore, the support slide plates 14 on both sides slide back to back with the corresponding push plates 12, and rely on the linkage rod 15 to pull the linkage slide plate 4 forward to slide close to the position of the curved screen 32. In this way, the top pressure ball 5 on the linkage slide plate 4 is squeezed to the middle arched position of the curved screen 32, which is convenient for squeezing detection along the Y-axis direction. That is, the bending strength detection in two directions is realized, and there is no need to reposition the curved screen 32 and additional driving operation, which can be completed only in the process of resetting the push plate 12.

[0040] During the extrusion process, the curved screen 32 can be photographed and observed by a high-definition camera, or image recognition can be performed to detect whether there is any crack, or the curved screen 32 can be directly powered on to display whether the curved screen 32 displays abnormally during the extrusion process.

[0041] In some specific implementation schemes, in order to ensure that the push plate 12 can be reset with the linkage plate 16 after the detection is completed, Figure 5 and Figure 6 As shown, one side of each supporting slide plate 14 is fixedly connected to an electric telescopic rod 27, and the telescopic end of the electric telescopic rod 27 is fixedly connected to a lifting plate 26. The limit blocks 25 distributed on each supporting slide plate 14 are fixedly connected to the corresponding lifting plate 26. When it is necessary to release the pushing effect of the linkage plate 16 on the one-way baffle 24 so that the pushing plate 12 is reset, the electric telescopic rod 27 is controlled to extend, and the distributed limit blocks 25 are driven to descend and disengage from the one-way baffle 24 through the lifting plate 26.

[0042] In some specific implementation schemes, in order to ensure that the top pressure ball 5 is effectively squeezed onto the curved screen 32, the position can be adjusted in the initial test state of the device. Specifically, an adjusting screw 6 is threadedly connected to the linkage slide 4, and the top pressure ball 5 is arranged at one end of the adjusting screw 6 close to the curved screen 32. By rotating the adjusting screw 6, the position of the top pressure ball 5 relative to the linkage slide 4 is adjusted.

[0043] In other specific implementation schemes, in order to facilitate the detection of the pressure of the top pressure ball 5 squeezing the curved screen 32 and avoid excessive squeezing force, a first pressure monitoring mechanism is arranged between the top pressure ball 5 and the end of the adjusting screw 6. The first pressure monitoring mechanism includes an installation cavity 29 and a first pressure sensor 31. The installation cavity 29 is opened at one end of the adjusting screw 6 close to the top pressure ball 5. A guide rod 28 is fixedly connected to the top pressure ball 5, and the guide rod 28 slides through the installation cavity 29. A compressible first support spring 30 is also connected between the guide rod 28 and the installation cavity 29. The first pressure sensor 31 is fixedly installed on the inner bottom of the installation cavity 29 and is aligned with the guide rod 28.

[0044] When the top pressure ball 5 is pressed onto the curved screen 32, it itself is also subjected to a reaction force, thereby exerting a squeezing effect on the first pressure sensor 31. The first pressure sensor 31 detects a signal and feeds it back to the background control terminal. The background control terminal promptly controls the driving mechanism to stop based on the value detected by the first pressure sensor 31 to avoid excessive pressure.

[0045] In some specific embodiments, in order to facilitate the control of the extrusion force of the push plate 12 on the sliding positioning tool, as shown in FIG. Figure 3As shown, each push plate 12 is provided with a second pressure monitoring mechanism on one side close to the sliding positioning device, and the second pressure monitoring mechanism includes an auxiliary push plate 20 and a second pressure sensor 23. The auxiliary push plate 20 is arranged in parallel on the side of the push plate 12 close to the sliding positioning device, and the two are not in direct contact. Both ends of the auxiliary push plate 20 are fixedly connected with mounting columns 21, and the mounting columns 21 penetrate the push plate 12. The mounting columns 21 can slide relative to the push plate 12. A stretchable second support spring 22 is connected between the mounting columns 21 and the push plate 12, and the second support spring 22 can The second pressure sensor 23 is mounted on the mounting column 21 and fixedly mounted on the ejection plate 12, and the second pressure sensor 23 is aligned with the auxiliary ejection plate 20. When the ejection plate 12 squeezes the sliding positioner, the ejection plate 12 is pressed against the sliding positioner by the auxiliary ejection plate 20, and at this time, the auxiliary ejection plate 20 is pressed by the reaction force to squeeze the second pressure sensor 23. The second pressure sensor 23 detects the pressure value and feeds it back to the background control terminal. The background control terminal determines whether the detection pressure reaches the set test value and controls the driving mechanism to stop in time.

[0046] In some specific embodiments, such as Figure 4 As shown, each set of sliding positioning devices includes a right-angle plate 2 and an adjusting clamp 17, an installation groove is opened on the inner wall of one side of the right-angle plate 2, the adjusting clamp 17 is slidably connected to the installation groove, and a threaded pushing piece for pushing up the adjusting clamp 17 is also provided on one side of the right-angle plate 2; a third connecting groove 3 is opened in the middle position of the detection table 1, and the right-angle plate 2 of each set of sliding positioning devices is slidably connected to the third connecting groove 3.

[0047] The threaded push piece includes a mounting block 18 and an adjusting bolt 19 . The mounting block 18 is fixedly arranged on one side of the right-angle plate 2 . The adjusting bolt 19 passes through the mounting block 18 and is threadedly connected to the mounting block 18 . One end of the adjusting bolt 19 is used to push the adjusting clamp 17 .

[0048] When the curved screen 32 needs to be positioned, the two side edges of the curved screen 32 are inserted between the corresponding right-angle plate 2 and the adjustment clamping plate 17, and then the adjustment bolt 19 is rotated to push the adjustment clamping plate 17 with the help of the adjustment bolt 19, so that the adjustment clamping plate 17 and the right-angle plate 2 fix the edge of the curved screen 32.

[0049] It should be noted that all the above-mentioned connecting slide grooves can adopt T-slots to prevent the related connecting slides from falling off.

[0050] In some specific embodiments, the driving mechanism includes a connecting guide rail 9 and a driving screw 10. The connecting guide rail 9 is fixedly connected to the detection table 1 through a bracket. The tops of the two ejection plates 12 are slidably connected to the connecting guide rail 9. A driving motor 11 is fixedly installed on one side of the connecting guide rail 9, and the main shaft end of the driving motor 11 is fixedly connected to the driving screw 10. The driving screw 10 passes through the tops of the two ejection plates 12 in sequence, and the ejection plates 12 are threadedly connected to the driving screw 10. It should be noted that two sections of threads with opposite spiral directions are symmetrically distributed on the driving screw 10 to ensure that when the driving motor 11 drives the driving screw 10 to rotate, the two ejection plates 12 can move toward or away from each other along the connecting guide rail 9.

[0051] In order to facilitate the understanding of the embodiments of this solution by those skilled in the art, the working principle of this solution is briefly described in combination with specific application scenarios:

[0052] First, slide the right-angle plates 2 on both sides along the third connecting groove 3 to adjust the distance between the two, and then make the two side edges of the curved screen 32 fit between the corresponding right-angle plates 2 and the adjustment clamping plates 17, and then rotate the adjusting bolts 19 to push the adjustment clamping plates 17 with the help of the adjusting bolts 19, so that the adjustment clamping plates 17 and the right-angle plates 2 fix the edges of the curved screen 32.

[0053] Then, the driving motor 11 is started to drive the driving screw 10 to rotate forward, thereby driving the push plates 12 on both sides to clamp toward the middle, so that the two push plates 12 respectively squeeze and push the corresponding right-angle plates 2, thereby squeezing the edges of the curved screen 32 on both sides to achieve the anti-bending strength test in the X-axis direction, and in this process, the linkage plate 16 moves with the push plates 12, and squeezes through the one-way baffles 24 distributed on the supporting slide plate 14. The one-way baffles 24 can deflect normally during the squeezing process, that is, the pressing ball 5 will not be linked.

[0054] After the X-axis direction is detected without abnormality, the driving motor 11 drives the driving screw 10 to reverse, and drives the push plates 12 on both sides to move back to reset. In this process, the linkage plate 16 on each push plate 12 moves in the opposite direction to squeeze the distributed one-way baffle 24, and at this time, the one-way baffle 24 is blocked by the corresponding limit block 25 and cannot deflect. In this way, the linkage plate 16 contacts the one-way baffle 24 and pushes the support slide plate 14 to slide horizontally along the second connecting slide groove 7. Therefore, the support slide plates 14 on both sides slide back to back with the corresponding push plates 12, and rely on the linkage rod 15 to pull the linkage slide plate 4 forward to slide close to the position of the curved screen 32. In this way, the top pressure ball 5 on the linkage slide plate 4 is squeezed to the middle arch position of the curved screen 32, which is convenient for the anti-bending strength test along the Y-axis direction. That is, the anti-bending strength test in two directions is completed, and there is no need to reposition the curved screen 32 and additional driving operation, which can be completed only in the process of resetting the push plate 12.

[0055] At the same time, during the detection process, the second pressure sensor 23 on the push plate 12 and the first pressure sensor 31 between the push ball 5 and the adjusting screw 6 can monitor the pressure to avoid excessive or low pressure that affects the detection result.

[0056] The above disclosures are only several specific embodiments of the present invention. However, the embodiments of the present invention are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A liquid crystal curved screen strength testing device, comprising a testing platform (1) and a testing fixture, wherein the testing fixture comprises two sets of symmetrically arranged sliding positioning tools, the two sets of sliding positioning tools are used to position the curved screen (32) on the testing platform (1), characterized in that: Also includes: A clamping mechanism, the clamping mechanism comprising a push plate (12) and a driving mechanism for lateral movement of the push plate (12), wherein the push plate (12) is provided with two pieces, each of which is used to push a corresponding sliding positioning tool; The pressing mechanism comprises a pressing ball (5) and a linkage sliding mechanism for driving the pressing ball (5) to move horizontally. The movement directions of the pressing ball (5) and the pushing plate (12) are perpendicular to each other. The pressing ball (5) is used to vertically press the arched position of the curved screen (32). The linkage sliding mechanism comprises a one-way baffle (24) and a sliding support. A linkage plate (16) matching the one-way baffle (24) is fixedly arranged on one side of the two pushing plates (12). The sliding support is connected to the pressing ball (5). A transmission mechanism is arranged between the one-way baffle (24) and the sliding support.

2. The liquid crystal curved screen strength testing device according to claim 1, characterized in that: The transmission mechanism comprises a linkage rod (15) and a support slide (14), and two of the support slide (14) and the linkage rod (15) are provided. A first connecting slide groove (13) is provided on both sides of the detection platform (1), and each of the supporting slides (14) is slidably connected to the first connecting slide groove (13). A plurality of one-way baffles (24) are evenly distributed on a side of each support slide (14) close to a corresponding push-up plate (12), and each of the one-way baffles (24) is movably connected to a corresponding push-up plate (12) through a rebound hinge. A limit stopper (25) is provided on a side of each one-way baffle (24) away from a top-pressing ball (5). One end of each linkage rod (15) is movably connected to a corresponding support slide (14) through a hinge, and the other end is movably connected to a sliding support member through a hinge.

3. The liquid crystal curved screen strength testing device according to claim 2, characterized in that: The sliding support member comprises a linkage slide (4); a second connection slide groove (7) vertically distributed with the first connection slide groove (13) is also provided on the detection platform (1); the linkage slide groove (4) is slidably connected with the second connection slide groove (7); a limit spring (8) is also connected between the linkage slide groove (4) and the second connection slide groove (7); the pressing ball (5) moves synchronously with the linkage slide groove (4); and the end of the linkage rod (15) away from the supporting slide groove (14) is movably connected with the linkage slide groove (4) through a hinge.

4. The liquid crystal curved screen strength testing device according to claim 2, characterized in that: One side of each of the supporting slide plates (14) is fixedly connected to an electric telescopic rod (27), the telescopic end of the electric telescopic rod (27) is fixedly connected to a lifting plate (26), and the limit stoppers (25) distributed on each of the supporting slide plates (14) are fixedly connected to the corresponding lifting plate (26).

5. The liquid crystal curved screen strength testing device according to claim 3, characterized in that: The linkage slide plate (4) is threadedly connected with an adjusting screw rod (6), and the pressing ball (5) is arranged at one end of the adjusting screw rod (6) close to the curved screen (32).

6. The liquid crystal curved screen strength testing device according to claim 5, characterized in that: A first pressure monitoring mechanism is provided between the top pressure ball (5) and the end of the adjusting screw (6), and the first pressure monitoring mechanism comprises a mounting cavity (29) and a first pressure sensor (31). The mounting cavity (29) is provided at one end of the adjusting screw (6) close to the top pressure ball (5). A guide rod (28) is fixedly connected to the top pressure ball (5), and the guide rod (28) is slidably inserted into the mounting cavity (29). A first supporting spring (30) is also connected between the guide rod (28) and the mounting cavity (29). The first pressure sensor (31) is fixedly installed at the inner bottom of the mounting cavity (29) and is aligned with the guide rod (28).

7. The liquid crystal curved screen strength testing device according to claim 1, characterized in that: A second pressure monitoring mechanism is provided on one side of each of the push-up plates (12) close to the sliding positioning device. The second pressure monitoring mechanism comprises an auxiliary push-up plate (20) and a second pressure sensor (23). The auxiliary push-up plate (20) is arranged in parallel on one side of the push-up plate (12) close to the sliding positioning device. Both ends of the auxiliary push-up plate (20) are fixedly connected with mounting columns (21), and the mounting columns (21) penetrate the push-up plate (12). The mounting columns (21) can slide relative to the push-up plate (12). A second supporting spring (22) is connected between the mounting columns (21) and the push-up plate (12). The second pressure sensor (23) is fixedly installed on the push-up plate (12), and the second pressure sensor (23) is aligned and matched with the auxiliary push-up plate (20).

8. The liquid crystal curved screen strength testing device according to claim 1, characterized in that: Each group of the sliding positioning devices comprises a right-angle plate (2) and an adjusting clamp (17); a mounting groove is provided on an inner wall of one side of the right-angle plate (2); the adjusting clamp (17) is slidably connected to the mounting groove; a threaded pushing member for pushing up the adjusting clamp (17) is also provided on one side of the right-angle plate (2); a third connecting groove (3) is provided in the middle position of the detection platform (1), and the right-angle plate (2) of each group of the sliding positioning devices is slidably connected to the third connecting groove (3).

9. The liquid crystal curved screen strength testing device according to claim 8, characterized in that: The threaded push-out member comprises a mounting block (18) and an adjusting bolt (19); the mounting block (18) is fixedly arranged on one side of the right-angle plate (2); the adjusting bolt (19) penetrates the mounting block (18) and is threadedly connected to the mounting block (18); one end of the adjusting bolt (19) is used for pushing out the adjusting clamping plate (17).

10. The liquid crystal curved screen strength testing device according to claim 1, characterized in that: The driving mechanism comprises a connecting guide rail (9) and a driving screw (10); the connecting guide rail (9) is fixedly connected to the detection platform (1); the tops of the two ejection plates (12) are slidably connected to the connecting guide rail (9); a driving motor (11) is fixedly mounted on one side of the connecting guide rail (9); the main shaft end of the driving motor (11) is fixedly connected to the driving screw (10); the driving screw (10) passes through the tops of the two ejection plates (12) in sequence, and the ejection plates (12) are threadedly connected to the driving screw (10).

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