Withstand voltage test device for production of reinforced liquid crystal display

Abstract

The invention relates to the technical field of pressure resistance tests, and discloses a pressure resistance test device for reinforced liquid crystal display production, which comprises a threaded clamping pressure applying mechanism and a hydraulic depth adjusting mechanism, a first radial extension rod and a second radial extension rod which are fixedly connected with the threaded sleeve and the second pressing plate respectively are arranged in the first pressing plate; the axial hollow holding rod can axially move along rod bodies of the first radial extension rod and the second radial extension rod; and the elastic gas film can lock the axial hollow holding rod on the rod bodies of the first radial extension rod and the second radial extension rod under the action of hydraulic pressure. According to the withstand voltage test device for production of the reinforced liquid crystal display, a two-point positioning mode is adopted, two symmetric surfaces of a rectangular structure can be clamped, the clamping thickness and depth are adjustable, the application range of the device to the clamping space position is widened, and in addition, the device is convenient to carry and convenient to use. And therefore, the use flexibility of the equipment is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of withstand voltage testing, and particularly to a withstand voltage testing device for the production of reinforced liquid crystal displays. Background Art

[0002] During the production process of liquid crystal displays, in order to ensure their compressive resistance, it is often necessary to reinforce specific parts thereof. After the liquid crystal display is reinforced, it is necessary to perform a withstand voltage test on the reinforced part. Therefore, a corresponding withstand voltage testing device is required.

[0003] For example, the Chinese patent with the publication number "CN215598886U" discloses "A power frequency withstand voltage testing device", the main structure of which includes a base, a hydraulic cylinder and two guide rods are respectively fixedly installed on the upper end of the base, and a lifting plate sleeved on the guide rod and sliding is flange-connected to the output end of the hydraulic cylinder, and a pressing plate is bolted to the lower end of the lifting plate. This power frequency withstand voltage testing device uses the guide rod to provide guiding and limiting effects for the pressing plate that moves up and down driven by the hydraulic cylinder, so that the pressing plate can accurately contact and press the workpiece to be tested on the bearing plate during the smooth up and down movement; the strong spring in the limit seat provides an elastic support for the workpiece to be tested and the infrared emitter, so that the infrared emitter that moves down synchronously with the workpiece to be tested can leave a fixed-point mark on the test paperboard, so as to record the deformation value caused by the pressure, so as to visually record the degree of deformation of the workpiece to be tested under pressure according to the mark left by the infrared emitter on the test paperboard, and thus make a statistical judgment.

[0004] However, for the reinforced display screen, since its middle part is a liquid crystal display screen, and the above-mentioned power frequency withstand voltage testing device requires a specific placement method, the degree of limitation of its clamping space position is relatively large. In addition, the above-mentioned power frequency withstand voltage testing device is difficult to move, resulting in relatively low flexibility in use. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a withstand voltage testing device for the production of reinforced liquid crystal displays. By adopting a two-point positioning method, it can clamp two symmetrical planes of a rectangular structure, and the clamping thickness and depth are adjustable, so as to improve the applicable range of the equipment for the clamping space position. In addition, the device is easy to carry, thereby improving the flexibility in use of the equipment, and solving the above technical problems.

[0006] To achieve the above object, the present invention provides the following technical solution: A voltage withstand test device for the production of reinforced liquid crystal displays, including a threaded clamping and pressing mechanism, which internally has a first pressing plate and a second pressing plate capable of achieving a clamping effect on the component to be detected, a threaded sleeve with a hollow center, and an external threaded rod installed in the threaded sleeve through a threaded structure, and when rotating relative to the threaded sleeve, the external threaded rod can drive the first pressing plate to axially move; and a hydraulic depth adjustment mechanism, which internally has a first radial extension rod and a second radial extension rod respectively fixedly connected to the threaded sleeve and the second pressing plate, an axially hollow grip rod capable of axially moving along the rod bodies of the first radial extension rod and the second radial extension rod, and an elastic air film capable of locking the axially hollow grip rod on the rod bodies of the first radial extension rod and the second radial extension rod under the action of hydraulic pressure.

[0007] Preferably, the threaded clamping and pressing mechanism further includes a first rotating shaft. An internal threaded hole is provided in the center of the threaded sleeve. The external threaded rod is installed in the internal threaded hole of the threaded sleeve through a threaded structure. One end of the external threaded rod is fixedly installed with a coupling. The other end of the external threaded rod internally installs a rotatable first rotating shaft through a bearing. One end of the first rotating shaft is fixedly installed with a first pressing plate. The second pressing plate is located outside the pressing end of the first pressing plate. One end of the second pressing plate is fixedly installed with a central fixed shaft. A first connecting plate integrally formed with the threaded sleeve is provided on the outer circumferential surface of the threaded sleeve near the first pressing plate. A second connecting plate is fixedly installed on the outside of the central fixed shaft.

[0008] Preferably, the threaded structure includes an internal threaded structure provided in the internal threaded hole and an external threaded structure provided on the rod body of the external threaded rod, and the internal threaded structure matches the external threaded structure.

[0009] Preferably, the axis lines of the first pressing plate, the second pressing plate, and the external threaded rod are on the same straight line.

[0010] Preferably, the hydraulic depth adjustment mechanism also includes two hollow sleeves, one end of the No. 1 radial extension rod and the No. 2 radial extension rod are respectively provided with a No. 3 connecting plate with an integral structure therewith, the No. 3 connecting plate at the end of the No. 1 radial extension rod is fixedly connected to the end of the No. 1 connecting plate, the No. 3 connecting plate at the end of the No. 2 radial extension rod is fixedly connected to the end of the No. 2 connecting plate, the other end of the No. 1 radial extension rod and the No. 2 radial extension rod are provided with an end limit plate with an integral structure therewith, and the center of the hollow sleeve is provided with a sleeve which is placed on the periphery of the No. 1 radial extension rod and the No. 2 radial extension rod and can be moved along the No. 1 radial extension rod and The second radial extension rod has a movable hole for axial movement of the rod body, and the interior of the hollow sleeve is provided with an annular liquid compression chamber on the periphery of the middle area of ​​the movable hole of the rod body, and the hollow sleeve is embedded with an elastic air film located on the periphery of the No. 1 radial extension rod and the No. 2 radial extension rod at the intersection of the annular liquid compression chamber and the movable hole of the rod body, the outer circumferential surfaces of the two hollow sleeves are fixedly connected to the two ends of the axial hollow gripping rod, the interior of the axial hollow gripping rod is provided with a liquid flow hole connecting the two annular liquid compression chambers, and the outer circumferential surface of the axial hollow gripping rod is provided with a liquid compensation channel connecting the external space and the liquid flow hole and having a liquid valve installed inside.

[0011] Preferably, the elastic air membrane is made of a rubber material with elastic extension function, and the two open ends of the elastic air membrane are sealed and embedded in the corresponding ends of the hollow casing.

[0012] Preferably, it also includes a rotary drive mechanism, which is internally provided with a hollow disk body that can rotate under the twisting action of a wrench, an inner rotating column that can drive the coupling to rotate, and an arc-shaped contact plate that can enable the hollow disk body and the inner rotating column to be linked by friction.

[0013] Preferably, the rotary drive mechanism includes a hollow disk body and an inner rotating column. The upper end surface of the hollow disk body is provided with a hexagonal rotating head integrally formed therewith. A cylindrical component installation cavity is provided at the center of the hollow disk body. A shaft body installation hole is provided at the center of the bottom end of the hollow disk body. The shaft body of the second rotating shaft is installed inside the shaft body installation hole through a bearing. An inner rotating column is placed at the center of the cylindrical component installation cavity. A shaft body fixing groove for installing the second rotating shaft is provided at the center of the bottom of the inner rotating column. The bottom end of the second rotating shaft is fixedly installed at the end of the coupling. The hollow disk body is provided with a plurality of circumferentially arrayed transverse component moving cavities around the cylindrical component installation cavity. The transverse component moving cavity and the circumferential side surface of the cylindrical component installation cavity are communicated through a first shaft body through hole. An inner moving plate capable of moving axially along the cylindrical component installation cavity is placed inside the cylindrical component installation cavity of the hollow disk body. One end of the inner moving plate is provided with a spiral spring. The other end of the inner moving plate is fixedly installed with a connecting shaft body passing through the first shaft body through hole. And one end of the connecting shaft body inside the cylindrical component installation cavity is fixedly installed with an arc-shaped abutting plate abutting against the circumferential surface of the inner rotating column.

[0014] Preferably, one end of the spiral spring abuts against one end surface of the inner moving plate, and the other end abuts against one end surface of the transverse component moving cavity, and the spiral spring is in a compressed state.

[0015] Preferably, the structural radius of the concave surface of the arc-shaped abutting plate matches the structural radius of the inner rotating column.

[0016] Compared with the prior art, the present invention provides a voltage withstand test device for the production of reinforced liquid crystal displays, having the following beneficial effects: By adopting a two-point positioning method, it can clamp two symmetrical planes of a rectangular structure, and moreover, the clamping thickness and depth are adjustable, thereby improving the applicability range of the device for the clamping space position. In addition, the device is easy to carry, thereby improving the flexibility of use of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a perspective view of the present invention; Figure 2 is a perspective sectional view of the present invention; Figure 3 is a perspective view of the threaded clamping and pressing mechanism in the present invention; Figure 4 is a perspective sectional view of the threaded clamping and pressing mechanism in the present invention; Figure 5 is a perspective view of the hydraulic depth adjustment mechanism in the present invention; Figure 6This is a three-dimensional sectional view of the hydraulic depth adjustment mechanism in the present invention; Figure 7 This is a three-dimensional sectional view of the rotary drive mechanism in the present invention; Figure 8 This is a three-dimensional combined view of the arc-shaped contact plate and the inner rotating column in the present invention.

[0018] Wherein: 1. Threaded clamping and pressing mechanism; 11. Threaded sleeve; 12. Internal threaded hole; 13. External threaded rod; 14. Coupling; 15. First rotating shaft; 16. First pressing plate; 17. Second pressing plate; 18. Central fixed shaft; 19. First connecting plate; 110. Second connecting plate; 2. Hydraulic depth adjustment mechanism; 21. First radially extending rod; 22. Second radially extending rod; 23. Liquid compensation channel; 24. Third connecting plate; 25. End limiting plate; 26. Axially hollow holding rod; 27. Hollow sleeve; 28. Rod body moving hole; 29. Annular liquid compression chamber; 210. Elastic air film; 211. Liquid flow hole; 3. Rotary drive mechanism; 31. Hollow disk body; 32. Hexagonal rotating head; 33. Cylindrical component installation cavity; 34. Shaft body installation hole; 35. Lateral component moving cavity; 36. Shaft body perforation; 37. Inner moving plate; 38. Helical spring; 39. Arc-shaped contact plate; 310. Inner rotating column; 311. Shaft body fixing groove; 312. Second rotating shaft. Detailed implementation manners

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0020] Please refer to Figure 1 and Figure 2 , a pressure resistance test device for reinforcing the production of liquid crystal displays, which needs to be used in cooperation with a liquid injection instrument, and the liquid injection instrument has the function of controlling the liquid output pressure.

[0021] In order to achieve the clamping function of the reinforced part of the display screen, please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4, it is necessary to set up a threaded clamping and pressing mechanism 1, which is internally provided with a first pressing plate 16 and a second pressing plate 17 that can clamp the component to be detected, a threaded sleeve 11 with a hollow center, and an external threaded rod 13 that is installed in the threaded sleeve 11 through a threaded structure and can drive the first pressing plate 16 to axially move when rotating relative to the threaded sleeve 11. The coupling 14 drives the external threaded rod 13 to rotate. Due to the threaded connection, the external threaded rod 13 will drive the first pressing plate 16 to move directionally until the first pressing plate 16 and the second pressing plate 17 are clamped on the symmetric side surfaces of the detection structure. At this time, the pressure received by the detection structure will be converted into an axial force between the threaded structures, and this force can directly reflect the pressure resistance of the detection structure at this time, thereby realizing the clamping function of the reinforced part of the display screen.

[0022] For the specific structure of the threaded clamping and pressing mechanism 1, please refer to Figure 3 and Figure 4 , and it also includes a first rotating shaft 15. An internal threaded hole 12 is provided in the center of the threaded sleeve 11. The external threaded rod 13 is installed in the internal threaded hole 12 of the threaded sleeve 11 through a threaded structure. One end of the external threaded rod 13 is fixedly installed with a coupling 14. The other end of the external threaded rod 13 is internally installed with a rotatable first rotating shaft 15 through a bearing. One end of the first rotating shaft 15 is fixedly installed with a first pressing plate 16. The second pressing plate 17 is located outside the pressing end of the first pressing plate 16, and one end of the second pressing plate 17 is fixedly installed with a central fixed shaft 18. A first connecting plate 19 integrated with the threaded sleeve 11 is provided on the outer circumferential surface of the threaded sleeve 11 near the first pressing plate 16. A second connecting plate 110 is fixedly installed on the outside of the central fixed shaft 18. The threaded structure includes an internal threaded structure provided in the internal threaded hole 12 and an external threaded structure provided on the rod body of the external threaded rod 13, and the internal threaded structure matches the external threaded structure. The axis lines of the first pressing plate 16, the second pressing plate 17, and the external threaded rod 13 are on the same straight line.

[0023] To realize the adjustment function for different detection depths, please refer to Figure 1 , Figure 2 , Figure 5 and Figure 6, it is necessary to set up a hydraulic depth adjustment mechanism 2, which is internally provided with a first radial extension rod 21 and a second radial extension rod 22 respectively fixedly connected to the threaded sleeve 11 and the second pressure plate 17, an axial hollow grip rod 26 capable of axially moving along the rod bodies of the first radial extension rod 21 and the second radial extension rod 22, and an elastic air film 210 capable of locking the axial hollow grip rod 26 on the rod bodies of the first radial extension rod 21 and the second radial extension rod 22 under the action of hydraulic pressure. During detection, it is necessary to clamp the first pressure plate 16 and the second pressure plate 17 on the symmetric side surfaces of the detection structure. Therefore, the first radial extension rod 21 and the second radial extension rod 22 need to be inserted from the side of the display screen, and the edge structure of the display screen will be located in the area between the first radial extension rod 21 and the second radial extension rod 22. According to the distance between the detected structure and the side of the display screen, the axial hollow grip rod 26 is moved to the periphery of the side of the display screen, and then a liquid injection instrument is used to inject liquid with a rated pressure into the internal liquid flow holes 211 and the annular liquid compression chamber 29. Under the action of hydraulic pressure, the elastic air film 210 will clamp the rod bodies of the first radial extension rod 21 and the second radial extension rod 22 in a wrapped manner with a certain pressure, thereby realizing the locking function of the first radial extension rod 21, the second radial extension rod 22, and the axial hollow grip rod 26. During operation, the first pressure plate 16 and the second pressure plate 17 are aligned with the detected structure, and then the axial hollow grip rod 26 is held by hand to control the threaded sleeve 11, the first pressure plate 16, and the second pressure plate 17 to be in a static state, and the adjustment function for different detection depths can be realized.

[0024] For the specific structure of the hydraulic depth adjustment mechanism 2, please refer to Figure 5 and Figure 6, also includes two hollow sleeves 27, one end of the No. 1 radial extension rod 21 and the No. 2 radial extension rod 22 is respectively provided with a No. 3 connecting plate 24 with an integral structure therewith, the No. 3 connecting plate 24 at the end of the No. 1 radial extension rod 21 is fixedly connected to the end of the No. 1 connecting plate 19, the No. 3 connecting plate 24 at the end of the No. 2 radial extension rod 22 is fixedly connected to the end of the No. 2 connecting plate 110, the other ends of the No. 1 radial extension rod 21 and the No. 2 radial extension rod 22 are provided with an end limit plate 25 with an integral structure therewith, the center of the hollow sleeve 27 is provided with a rod body movable hole 28 which is sleeved on the outer periphery of the rod body of the No. 1 radial extension rod 21 and the No. 2 radial extension rod 22 and can move axially along the No. 1 radial extension rod 21 and the No. 2 radial extension rod 22, the interior of the hollow sleeve 27 is in the rod body movable hole 28 An annular liquid compression chamber 29 is arranged on the periphery of the middle area of ​​the hole 28, and an elastic air film 210 is embedded in the hollow casing 27 at the intersection of the annular liquid compression chamber 29 and the rod body movable hole 28, which is located on the periphery of the No. 1 radial extension rod 21 and the No. 2 radial extension rod 22. The outer circumferential surfaces of the two hollow casings 27 are fixedly connected to the two ends of the axial hollow gripping rod 26, and the interior of the axial hollow gripping rod 26 is provided with a liquid flow hole 211 connecting the two annular liquid compression chambers 29. The outer circumferential surface of the axial hollow gripping rod 26 is provided with a liquid compensation channel 23 connecting the external space and the liquid flow hole 211 and having a liquid valve installed therein. The elastic air film 210 is made of a rubber material with elastic extension function, and the two open ends of the elastic air film 210 are sealed and embedded in the corresponding ends of the hollow casing 27.

[0025] In order to more intuitively reflect whether the pressure tolerance of the contact structure meets the standard, please refer to Figure 1 , Figure 2 , Figure 7 and Figure 8 , it is necessary to set up a rotary drive mechanism 3, which is internally provided with a hollow disk body 31 that can rotate under the screwing action of a wrench, an inner rotating column 310 that can drive the coupling 14 to rotate, and an arc-shaped contact plate 39 that relies on friction to enable the hollow disk body 31 and the inner rotating column 310 to be linked together. Use a wrench to screw the hexagonal rotating head 32, and the hexagonal rotating head 32 will drive the second rotating shaft 312 to rotate through the arc-shaped contact plate 39 and the inner rotating column 310, thereby driving the coupling 14 to rotate. When the screwing strength between the internal thread structure and the external thread structure is greater than the force formed by the maximum static friction force between the internal rotating column 310 and the arc-shaped contact plate 39, the internal rotating column 310 and the arc-shaped contact plate 39 cannot continue to be linked together, and relative rotation occurs between the hollow disk body 31 and the arc-shaped contact plate 39, which does not cause the torque resistance to continue to increase. By observing whether the structure being tested changes under the action of the pressure, it is reflected whether the pressure tolerance of the contacted structure meets the standard.

[0026] For the specific structure of the rotary drive mechanism 3, please refer to Figure 7 and Figure 8 , including a hollow disk body 31 and an inner rotating column 310. A hexagonal rotating head 32 with an integrated structure is provided on the upper end surface of the hollow disk body 31. A cylindrical component installation cavity 33 is provided at the center of the hollow disk body 31. A shaft installation hole 34 is provided at the center of the bottom end of the hollow disk body 31. The shaft body of the second rotating shaft 42 is installed inside the shaft installation hole 34 through a bearing. An inner rotating column 310 is placed at the center of the cylindrical component installation cavity 33. A shaft fixing groove 311 for installing the second rotating shaft 312 is provided at the center of the bottom of the inner rotating column 310. The bottom end of the second rotating shaft 312 is fixedly installed at the end of the coupling 14. The hollow disk body 31 is provided with a plurality of annularly arrayed lateral component moving cavities 35 around the cylindrical component installation cavity 33. The lateral component moving cavities 35 and the circumferential side surface of the cylindrical component installation cavity 33 are communicated through a first shaft through hole 36. An inner moving plate 37 capable of moving axially along the cylindrical component installation cavity 33 is placed inside the hollow disk body 31 in the cylindrical component installation cavity 33. One end of the inner moving plate 37 is provided with a spiral spring 38. The other end of the inner moving plate 37 is fixedly installed with a connecting shaft body passing through the first shaft through hole 36. And one end of the connecting shaft body inside the cylindrical component installation cavity 33 is fixedly installed with an arc-shaped abutting plate 39 abutting against the circumferential surface of the inner rotating column 310. One end of the spiral spring 38 abuts against one end surface of the inner moving plate 37, and the other end abuts against one end surface of the lateral component moving cavity 35. And the spiral spring 38 is in a compressed state. The structural radius of the concave surface of the arc-shaped abutting plate 39 matches the structural radius of the inner rotating column 310.

[0027] During use and detection, the first pressing plate 16 and the second pressing plate 17 need to clamp on the symmetric two side surfaces of the detection structure. Therefore, the first radial extension rod 21 and the second radial extension rod 22 need to be inserted from the side of the display screen, and the edge structure of the display screen will be located in the area between the first radial extension rod 21 and the second radial extension rod 22. According to the distance between the detected structure and the side of the display screen, the axial hollow grip rod 26 is moved to the periphery of the side of the display screen. Then, a liquid injection instrument is used to inject liquid with a rated pressure into the internal of the liquid flow hole 211 and the annular liquid compression cavity 29. Under the action of the hydraulic pressure, the elastic air film 210 will clamp the outer periphery of the rod bodies of the first radial extension rod 21 and the second radial extension rod 22 with a certain pressure, so as to realize the locking function of the first radial extension rod 21, the second radial extension rod 22 and the axial hollow grip rod 26. Align the first pressing plate 16 and the second pressing plate 17 with the detected structure. Then, hold the axial hollow grip rod 26 by hand to control the threaded sleeve 11, the first pressing plate 16 and the second pressing plate 17 to be in a static state. Use a wrench to screw the hexagonal rotating head 32. The hexagonal rotating head 32 will drive the second rotating shaft 312 to rotate through the arc-shaped abutting plate 39 and the inner rotating column 310, and then drive the coupling 14 to rotate. The coupling 14 drives the outer threaded rod 13 to rotate. Due to the threaded structure connection, the outer threaded rod 13 will drive the first pressing plate 16 to move directionally until the first pressing plate 16 and the second pressing plate 17 clamp on the symmetric two side surfaces of the detection structure. At this time, the pressure received by the detection structure will be converted into the axial acting force between the threaded structures. When the screwing strength between the internal threaded structure and the external threaded structure is greater than the acting force formed by the maximum static friction force between the inner rotating column 310 and the arc-shaped abutting plate 39, the inner rotating column 310 and the arc-shaped abutting plate 39 cannot continue to be linked, and a relative rotation phenomenon occurs between the hollow disk body 31 and the arc-shaped abutting plate 39, and the torque resistance will not continue to increase. By observing whether the detected structure changes under the action of this pressure, it can be reflected whether the pressure tolerance of the contacted structure meets the standard.

[0028] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A voltage withstand test device for the production of reinforced liquid crystal displays, characterized in that: Including, A threaded clamping and pressing mechanism (1), which internally is provided with a first pressing plate (16) and a second pressing plate (17) capable of clamping the component to be detected, a threaded sleeve (11) with a hollow center, and an external threaded rod (13) installed in the threaded sleeve (11) through a threaded structure, and when rotating relative to the threaded sleeve (11), it can drive the first pressing plate (16) to axially move; And a hydraulic depth adjustment mechanism (2), which internally is provided with a first radial extension rod (21) and a second radial extension rod (22) respectively fixedly connected to the threaded sleeve (11) and the second pressing plate (17), an axially hollow grip rod (26) capable of axially moving along the rod bodies of the first radial extension rod (21) and the second radial extension rod (22), and an elastic air film (210) capable of locking the axially hollow grip rod (26) on the rod bodies of the first radial extension rod (21) and the second radial extension rod (22) under the action of hydraulic pressure.

2. The pressure resistance test device for the production of reinforced liquid crystal displays according to claim 1, characterized in that: The threaded clamping and pressing mechanism (1) further includes a first rotating shaft (15). The center of the threaded sleeve (11) is provided with an internal threaded hole (12). The threaded sleeve (11) is installed with an external threaded rod (13) through a threaded structure inside the internal threaded hole (12). One end of the external threaded rod (13) is fixedly installed with a coupling (14). The other end of the external threaded rod (13) is internally installed with a rotatable first rotating shaft (15) through a bearing. One end of the first rotating shaft (15) is fixedly installed with a first pressing plate (16). The second pressing plate (17) is located outside the pressing end of the first pressing plate (16). One end of the second pressing plate (17) is fixedly installed with a central fixed shaft (18). The threaded sleeve (11) is provided with a first connecting plate (19) integrally formed with the threaded sleeve (11) on the outer circumferential surface near the first pressing plate (16). The outside of the central fixed shaft (18) is fixedly installed with a second connecting plate (110).

3. A voltage withstand test device for the production of a reinforced liquid crystal display according to claim 2, characterized in that: The threaded structure includes an internal threaded structure provided in the internal threaded hole (12) and an external threaded structure provided on the rod body of the external threaded rod (13), and the internal threaded structure matches the external threaded structure.

4. A voltage withstand test device for the production of a reinforced liquid crystal display according to claim 3, characterized in that: The axis lines of the first pressing plate (16), the second pressing plate (17), and the external threaded rod (13) are on the same straight line.

5. A voltage withstand test device for the production of a reinforced liquid crystal display according to claim 4, characterized in that: The hydraulic depth adjustment mechanism (2) further comprises two hollow sleeves (27), one end of the first radial extension rod (21) and the second radial extension rod (22) are respectively provided with a third connecting plate (24) of an integral structure therewith, the third connecting plate (24) at the end of the first radial extension rod (21) is fixedly connected to the end of the first connecting plate (19), the third connecting plate (24) at the end of the second radial extension rod (22) is fixedly connected to the end of the second connecting plate (110), the other ends of the first radial extension rod (21) and the second radial extension rod (22) are provided with an end stop plate (25) of an integral structure therewith, and the center of the hollow sleeve (27) is provided with a stop plate which is sleeved on the outer periphery of the first radial extension rod (21) and the second radial extension rod (22) and can be moved along the first radial extension rod (21) and the second radial extension rod (22). A rod body movable hole (28) for axial movement of the rod (22); an annular liquid compression chamber (29) is arranged inside the hollow sleeve (27) at the periphery of the middle area of ​​the rod body movable hole (28); an elastic air film (210) located at the periphery of the first radial extension rod (21) and the second radial extension rod (22) is embedded in the hollow sleeve (27) at the intersection of the annular liquid compression chamber (29) and the rod body movable hole (28); the outer circumferential surfaces of the two hollow sleeves (27) are fixedly connected to the two ends of the axial hollow gripping rod (26); a liquid flow hole (211) connecting the two annular liquid compression chambers (29) is arranged inside the axial hollow gripping rod (26); and a liquid compensation channel (23) connecting the external space and the liquid flow hole (211) and having a liquid valve installed inside is arranged on the outer circumferential surface of the axial hollow gripping rod (26).

6. The pressure resistance test device for the production of reinforced liquid crystal displays according to claim 5, characterized in that: The elastic air membrane (210) is made of a rubber material having an elastic extension function, and the two opening ends of the elastic air membrane (210) are sealedly embedded in the corresponding ends of the hollow casing (27).

7. A voltage withstand test device for the production of a reinforced liquid crystal display according to claim 6, characterized in that: It also includes a rotary drive mechanism (3), which is provided with a hollow disk (31) capable of rotating under the action of a wrench, an inner rotating column (310) capable of driving the coupling (14) to rotate, and an arc-shaped contact plate (39) capable of causing the hollow disk (31) and the inner rotating column (310) to move in conjunction with each other by means of friction.

8. A voltage withstand test device for the production of a reinforced liquid crystal display according to claim 7, characterized in that: The rotary drive mechanism (3) includes a hollow disk body (31) and an inner rotating column (310). The upper end surface of the hollow disk body (31) is provided with a hexagonal rotating head (32) of an integral structure therewith. A cylindrical component installation cavity (33) is provided at the center of the hollow disk body (31). An axial body installation hole (34) is provided at the center of the bottom end of the hollow disk body (31). The shaft body of the second rotating shaft (42) is installed inside the axial body installation hole (34) through a bearing. The inner rotating column (310) is placed at the center of the cylindrical component installation cavity (33). A shaft body fixing groove (311) for installing the second rotating shaft (312) is provided at the center of the bottom of the inner rotating column (310). The bottom end of the second rotating shaft (312) is fixedly installed at the end of the coupling (14). The hollow disk body (31) is provided with a plurality of annularly arrayed transverse component moving cavities (35) around the cylindrical component installation cavity (33). The transverse component moving cavities (35) and the circumferential side surface of the cylindrical component installation cavity (33) are communicated through a first shaft body through hole (36). An inner moving plate (37) capable of moving axially along the cylindrical component installation cavity (33) is placed inside the hollow disk body (31) at the cylindrical component installation cavity (33). One end of the inner moving plate (37) is placed with a spiral spring (38). The other end of the inner moving plate (37) is fixedly installed with a connecting shaft body penetrating through the first shaft body through hole (36), and an arc-shaped abutting plate (39) abutting against the circumferential surface of the inner rotating column (310) is fixedly installed at one end of the connecting shaft body located inside the cylindrical component installation cavity (33).

9. The pressure resistance test device for the production of reinforced liquid crystal displays according to claim 8, characterized in that: One end of the spiral spring (38) abuts against one end surface of the inner moving plate (37), and the other end abuts against one end surface of the transverse component moving cavity (35), and the spiral spring (38) is in a compressed state.

10. A voltage withstand test device for the production of a reinforced liquid crystal display according to claim 9, characterized in that: The structural radius of the concave surface of the arc-shaped abutting plate (39) matches the structural radius of the inner rotating column (310).

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