A strength testing device for display screen production

Abstract

The invention relates to the technical field of display screen testing, and discloses a strength testing device for display screen production, comprising a test bench, four fixture assemblies, a driving mechanism and a detection mechanism; the four fixture assemblies are respectively oriented to the four sides of the display screen, and the driving mechanism is used to drive the four fixture assemblies; the fixture assembly comprises a support, a clamping block and an anti-rocking plate, a reversing assembly is installed on the outer side of each of the four supports, and the four anti-rocking plates are respectively connected to the four reversing assemblies; the driving mechanism comprises a shaft rod 1, a shaft rod 2 and two driving assemblies, the two driving assemblies respectively drive the shaft rod 1 and the shaft rod 2 to rotate, the shaft rod 1 is transmission-connected to two transverse reversing assemblies, the shaft rod 2 is transmission-connected to two longitudinal reversing assemblies, the transverse driving assembly is alternately transmission-coordinated with two transverse lifting assemblies, and the longitudinal driving assembly is alternately transmission-coordinated with two longitudinal lifting assemblies; when testing the strength of the display screen, the inner bending deformation strength detection and the outer bending deformation strength detection of the display screen are realized.

Description

Technical Field

[0001] The invention relates to the technical field of display screen testing, and in particular to a strength testing device for display screen production. Background Art

[0002] In the prior art, the strength of the screen is obtained by testing the compressive strength of different points on the screen. During the test, a testing device with a single pressing head (such as a multi-purpose mobile phone display screen strength testing device disclosed in Chinese invention patent application number 202311224233.5) or a testing device with multiple pressing heads (such as a mobile phone display screen compressive strength testing device disclosed in Chinese invention patent application number 202410724005.2) can be used to test the screen.

[0003] However, regardless of whether it is a single-point detection method or a multi-point detection method, the points used for detection are mainly located in the middle part of the screen that is not directly supported by the jig, while the four corners and edges of the screen are directly supported by the jig, making it impossible to effectively and accurately obtain the compressive strength of the four corners and edges of the screen by detecting the compressive strength of the points. At the same time, the detection method of obtaining the strength of the screen at the points by detecting the concave deformation (inward bending deformation) of the screen at the points cannot accurately reflect the performance of the screen when it is bent outward. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a strength testing device for display screen production. When testing the strength of the display screen, it realizes the strength testing of the inward bending deformation and the outward bending deformation of the display screen, which can effectively solve the problems raised in the background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a strength testing device for display screen production, comprising:

[0006] A test bench for supporting the overall mechanism, four fixture assemblies arranged on the test bench and facing the four sides of the display screen respectively, a driving mechanism located between the four fixture assemblies, and the driving mechanism is used to drive the four fixture assemblies, and a detection mechanism arranged above the fixture assemblies;

[0007] The clamp assembly includes a clamping block for lifting the display screen and an anti-rocking plate for pressing the display screen onto the clamping block; the driving mechanism includes a shaft rod 1, a shaft rod 2 and two driving shaft sleeves, the two driving shaft sleeves are respectively sleeved on the shaft rod 1 and the shaft rod 2 and can move axially, both ends of the shaft rod 1 and the shaft rod 2 are respectively connected to the reversing assembly, and both ends of the two driving shaft sleeves are respectively connected to the lifting assembly; the reversing assembly drives the anti-rocking plate to move above the display screen, and the lifting assembly drives the clamping block to move below the display screen;

[0008] The lifting assembly includes a rotating sleeve and a lifting column, the rotating sleeve penetrates and rotates to connect the support, and one end of the lifting column is screwed into the rotating sleeve; the reversing assembly includes a transmission rod and a guide rail, the transmission rod penetrates and rotates to connect the support;

[0009] It also includes a plurality of right-angle transmission mechanisms consisting of two bevel gears matching each other; both ends of shaft rod one and both ends of shaft rod two are respectively connected to a transmission rod through the right-angle transmission mechanism; both ends of the two drive sleeves are respectively connected to a rotating sleeve through the right-angle transmission mechanism.

[0010] Preferably, the fixture assembly also includes a support, the support is fixedly connected to the top of the test bench, and an inclined slide groove is arranged in the clamping block, and the inclined slide groove slides on the inclined rail on the support.

[0011] Preferably, the other end of the lifting column extends into the clamping block and slidably cooperates with the clamping block.

[0012] Preferably, the anti-rocking plate is slidably mounted on the support, one end of the transmission rod is coaxially fixed to the guide rail, and the guide rail is transmission-connected to the end of the anti-rocking plate away from the display screen.

[0013] Preferably, a pressure wheel is rotatably mounted on one end of the anti-sway plate facing the display screen via an axis.

[0014] Compared with the prior art, the present invention provides a strength testing device for display screen production, which has the following beneficial effects:

[0015] The display screen is clamped and supported by four clamping blocks, and the four clamping blocks are in contact with the middle parts of the four vertical surfaces of the display screen when clamping the display screen, so that the center position of the display screen can be pressurized to make the display screen bend inwardly and deform, thereby realizing the strength test of the middle part of the display screen; through the cooperation of the four clamping blocks and the four anti-rocker plates, the four clamping blocks can be moved downward in sequence to separate from the display screen, so that the display screen located above the clamping blocks after the downward movement is set in the air, so that the display screen at this location and the display screens located at right angles on both sides of the location can be pressed down to carry out the downward bending deformation strength test, and the two anti-rocker plates corresponding to the clamping blocks that move downwardly are moved and pressed on the display screen, so that the two anti-rocker plates and the remaining three clamping blocks supporting the display screen jointly form an upper and lower clamping effect on the display screen, thereby avoiding the display screen from tilting up during the downward bending deformation test, and ensuring the test effect; the inward bending deformation strength test and the outward bending deformation strength test of the display screen are realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure when the present invention cooperates with a display screen;

[0017] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 3It is a schematic diagram of the distribution of four supports and two drive components;

[0019] Figure 4 It is a schematic diagram of the structure of the drive component and the reversing component;

[0020] Figure 5 is a schematic diagram of the structure of the lifting assembly;

[0021] Figure 6 It is a schematic diagram of the relative position change between the transposition plate and the driving gear;

[0022] Figure 7 It is a schematic diagram of the cooperation between the transverse anti-tilt plate, the transverse clamping block and the display screen;

[0023] Figure 8 It is a schematic diagram of the coordination between the longitudinal anti-tilt plate, the longitudinal clamping block and the display screen.

[0024] Among them: 100, display screen; 1, test bench; 2, support; 3, clamping block; 4, anti-rocking plate; 41, perforation; 42, pressure wheel; 5, shaft rod one; 6, shaft rod two; 7, drive assembly; 8, lifting assembly; 9, reversing assembly; 10, gantry; 11, three-axis orthogonal robot arm; 12, test head; 13, pressure sensor; 71, driver; 72, drive shaft sleeve; 73, drive rack; 74, drive gear; 75, transposition plate; 81, rotating sleeve; 82, lifting column; 91, transmission rod; 92, guide rail. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] See also Figures 1 to 8A strength testing device for display screen production includes a test bench 1, four supports 2 and two door frames 10. The supports 2 and the door frames 10 are all fixed on the top surface of the test bench 1. The four supports 2 are all located between the two door frames 10. There are four supports 2, and the four supports 2 are grouped in twos and are respectively located in the horizontal direction and the longitudinal direction of the display screen 100, so that the four supports 2 face the four sides of the display screen 100 respectively; the supports 2 are cross-shaped, and clamping blocks 3 are installed on the middle platforms of the four supports 2. The clamping blocks 3 have a lifting surface for resisting the bottom surface of the display screen 100 and a positioning surface for resisting the side surface of the display screen 100. The four clamping blocks 3 cooperate to clamp the display screen 100; a three-axis orthogonal robot arm 11 is installed on the top surfaces of the two door frames 10. A test head 12 is installed on the working end of the three-axis orthogonal robot arm 11 through a pressure sensor 13. The three-axis orthogonal robot arm 11, the test head 12 and the pressure sensor 13 cooperate to form a testing mechanism.

[0027] The three-axis orthogonal robot arm 11 is used to drive the test head 12 and the pressure sensor 13 to move along the X-axis, the Y-axis and the Z-axis, so that after the display screen 100 is clamped between the four clamps 3, the test head 12 can press down to contact the display screen 100 and apply pressure to the display screen 100 to deform the display screen 100. The pressure sensor 13 is used to detect and display the pressure exerted on the display screen 100 by the test head 12. The strength of the display screen 100 is obtained by the maximum pressure value detected by the pressure sensor 13.

[0028] In the above technical solution, the display screen 100 is clamped between four clamping blocks 3, the four clamping blocks 3 are distributed in a rectangular shape, and the four clamping blocks 3 are respectively located in the middle of the four sides of the rectangle, and there is a large gap between two adjacent clamping blocks 3. Therefore, when the test head 12 applies pressure to the display screen 100, the test head 12 should apply pressure to the center position of the display screen 100 to ensure that the force on all sides of the display screen 100 is balanced to avoid the display screen 100 from warping.

[0029] In order to perform pressure tests on the four right-angle positions and the midpoint positions of the four sides of the display screen 100, so as to obtain the strength performance of the display screen 100 when it is bent down at each right-angle position and each rectangular side midpoint position, the above technical solution is further described below; specifically:

[0030] An inclined slide groove is arranged in the clamp block 3, and the inclined slide groove is on the inclined rail on the platform in the middle of the support 2, so that the clamp block 3 and the support 2 form a bite mechanism, and the sliding track of the clamp block 3 is an oblique line, and the extension line of the oblique line intersects with the display screen 100 placed on the clamp block 3, so that when the clamp block 3 slides away from the display screen 100, it can slide a short distance to provide enough downward bending space for the display screen 100; an anti-rocking plate 4 is installed on the top of each of the four supports 2, and each anti-rocking plate 4 can move from the upper side of the display screen 100 to the center of the display screen 100, and press the pressure wheel 42 on the surface of the display screen 100; the anti-rocking plate 4 penetrates through and slidably connects the support 2, so that the anti-rocking plate 4 and the support 2 form a bite structure, so that when the test head 12 performs a downward bending test on one edge of the display screen 100, the force exerted by the other edge of the display screen 100 on the pressing wheel 42 can be transmitted to the test bench 1 through the anti-rocking plate 4 and the support 2, thereby ensuring the downward pressing effect of the pressing wheel 42 on the display screen 100, so that the end of the display screen 100 away from the test head 12 can be stabilized on the clamping block 3; the pressing wheel 42 is rotatably installed on the anti-rocking plate 4 at one end facing the center position, and the axial direction of the pressing wheel 42 is perpendicular to the moving direction of the anti-rocking plate 4;

[0031] A lifting assembly 8 is installed on the inner side of each of the four supports 2, and a clamping block 3 is connected to the telescopic end of each lifting assembly 8. The clamping block 3 is driven by the lifting assembly 8 to move up or down along the inclined straight line moving trajectory on the support 2. Before clamping the display screen 100, the four lifting assemblies 8 are rotated to make the four clamping blocks 3 move up to the same height. After clamping the display screen 100, when it is necessary to perform a pressure test on the midpoint position of any edge of the display screen 100, the corresponding lifting assembly 8 is rotated to make the corresponding clamping block 3 slide down and detach from the display screen 100, so that the display screen 100 at this position floats, and then the test head 12 is used to pressurize the display screen 100 at this position; it should be noted that after the clamping block 3 moves down and detaches from the display screen 100, the pressure test can be performed on the part of the display screen 100 directly opposite to the clamping block 3, and the display screens 100 located on both sides of the clamping block 3 - the display screens 100 located at right angles on both sides of the midpoint position - can also be pressurized.

[0032] A reversing assembly 9 is respectively installed on the outer side of the four supports 2 , and each reversing assembly 9 is respectively connected to an anti-rocking plate 4 , and the anti-rocking plate 4 is driven by the reversing assembly 9 to approach or move away from the center position of the test bench 1 .

[0033] It should be noted that when any one of the lateral clamping blocks 3 moves away from the display screen 100 after clamping the display screen 100, the two lateral anti-sway plates 4 are simultaneously moved to the top of the display screen 100 to press the lateral ends of the display screen 100, and press the display screen 100 on the other three clamping blocks 3, such as Figure 7As shown, at this time, the corresponding longitudinal edge of the display screen 100 can be subjected to a pressure test, including the midpoint of the longitudinal edge and the right-angle positions at both ends of the longitudinal edge. Similarly, when any longitudinal clamping block 3 moves away from the display screen 100 after clamping the display screen 100, the two longitudinal anti-sway plates 4 also move to the top of the display screen 100 at the same time to press the lateral ends of the display screen 100, and press the display screen 100 onto the remaining three clamping blocks 3, as shown in FIG. Figure 8 As shown, at this time, the corresponding lateral edge of the display screen 100 may be subjected to a pressure test, including a pressure test on the midpoint of the lateral edge and the right-angle positions at both ends of the lateral edge.

[0034] As a further explanation of the above technical solution, a shaft rod 1 5 is provided at the lower part of the two horizontal supports 2, and a shaft rod 2 6 is provided at the lower part of the two longitudinal supports 2. A driving assembly 7 is connected to the shaft rod 1 5 and the shaft rod 2 6. The two driving assemblies 7 respectively drive the shaft rod 1 5 and the shaft rod 2 6 to rotate. The shaft rod 1 5 is transmission-connected to the two horizontal reversing assemblies 9 to convert the rotation of the shaft rod 1 5 into the movement of the anti-rocking plate 4 relative to the display screen 100 through the reversing assembly 9, and the shaft rod 2 6 is transmission-connected to the two longitudinal reversing assemblies 9 to convert the rotation of the shaft rod 2 6 into the movement of the anti-rocking plate 4 relative to the display screen 100 through the reversing assembly 9.

[0035] The shaft rod 1 5 penetrates and rotates to connect the two horizontal supports 2, the shaft rod 2 6 penetrates and rotates to connect the two longitudinal supports 2, the driving assembly 7 is located between the four supports 2, and the two driving assemblies 7 are staggered in the horizontal and vertical directions. The horizontal driving assembly 7 is alternately transmitted and coordinated with the two horizontal lifting assemblies 8, and the longitudinal driving assembly 7 is alternately transmitted and coordinated with the two longitudinal lifting assemblies 8. The lifting assembly 8 is used to convert the rotational motion output by the driving assembly 7 into the lifting movement of the clamping block 3.

[0036] It should be noted that the lateral driving assembly 7 can be spaced apart from two lateral lifting assemblies 8 at the same time, and the longitudinal driving assembly 7 can be spaced apart from two longitudinal lifting assemblies 8 at the same time, and when the lifting assembly 8 is spaced apart from the driving assembly 7, the lifting assembly 8 can be manually moved and drive the clamp 3 to move upward or downward.

[0037] Furthermore, the driving assembly 7 includes a driver 71, a driving sleeve 72, a driving rack 73 and a driving gear 74. The driver 71 is any one of an electric push rod, a hydraulic cylinder or a pneumatic cylinder, and the driver 71 is preferably an electric push rod with a servo motor as a driving unit; the housing of the driver 71 is fixed on the test bench 1, and the output end of the driver 71 is connected to the driving gear 74 through a driving rack 73. The driving gear 74 is fixedly sleeved on the outer surface of the driving sleeve 72, and the driving sleeve 72 is transmission-sleeved on the outer surface of the shaft rod 1 5 or the outer surface of the shaft rod 2 6, so that the driver 71 can drive the shaft rod 1 5 or the shaft rod 2 6 to rotate, and the two ends of the driving sleeve 72 are alternately matched with the two horizontal lifting assemblies 8 or alternately matched with the two longitudinal lifting assemblies 8; the driving sleeve 72 is connected to the test bench 1 through a key and a groove. The shaft rod 1 5 or the shaft rod 2 6 forms a transmission fit that can slide with each other, so that when the drive sleeve 72 rotates to drive the shaft rod 1 5 or the shaft rod 2 6 to rotate, the drive sleeve 72 can also slide axially along the shaft rod 1 5 or the shaft rod 2 6; the drive assembly 7 also includes two transposition plates 75, the two transposition plates 75 are respectively fixed at the two ends of the drive rack 73 in the length direction, and the transposition plates 75 are arranged along the length direction of the drive rack 73, the sum of the lengths of the two transposition plates 75 is less than the length of the drive rack 73, and the two transposition plates 75 are respectively matched with the two ends of the drive gear 74; both ends of the drive gear 74 are contracted, so that the ends of both ends of the drive gear 74 are truncated, so that an inclined transmission mechanism can be formed between the drive gear 74 and the transposition plates 75, and the two transposition plates 75 are alternately matched with the drive gear 74;

[0038] It should be noted that in the initial state, that is, Figure 2 In the state shown, the four clamping blocks 3 are in a position state where they can directly clamp the display screen 100. In this position state, the display screen 100 can be directly placed between the four clamping blocks 3 so that the four clamping blocks 3 clamp the display screen 100; the middle part of the driving rack 73 is meshed with the driving gear 74, and the driving gear 74 is just located between the two transposition plates 75. The two transposition plates 75 respectively contact the circular table surfaces at both ends of the driving gear 74, the driving assembly 7 is spaced apart from all the lifting assemblies 8, and each pressure wheel 42 is away from the center position of the test bench 1.

[0039] When the driver 71 drives the driving rack 73 to move and one end of the driving rack 73 moves toward the driving gear 74, the transposition plate 75 located at this end moves toward the driving gear 74, and the transposition plate 75 located at the other end moves to the side away from the driving gear 74, and drives the driving gear 74 to rotate. In the process of the transposition plate 75 moving toward the driving gear 74, the inclined transmission mechanism formed by the transposition plate 75 and the frustum of the driving gear 74 is first used to push the rotating driving gear 74 to one side, so that the driving gear 74 and the driving shaft sleeve 72 rotate and move a certain distance to one side along the axis. After the driving gear 74 moves a certain distance, as the driving rack 73 moves further, the transposition plate 75 remains against the circular end face of the driving gear 74 and forms a planar sliding fit with the driving gear 74, so that the driving gear 74 and the driving shaft sleeve 72 only rotate and no longer move along the axis. Specifically, when it is necessary to transform the matching state between the driving assembly 7 and the corresponding two lifting assemblies 8 from being spaced apart from each other into a transmission connection between the driving assembly 7 and one lifting assembly 8, the driving rack 73 is driven to move by the driver 71, and the end of the driving rack 73 corresponding to the lifting assembly 8 is moved toward the driving gear 74, so that the corresponding transposition plate 75 pushes the driving gear 74 and the driving shaft sleeve 72 toward the lifting assembly 8, so that the driving assembly 7 is transmission-connected with the lifting assembly 8, and then the driving rack 73 is pushed by the driver 71 to make the lifting assembly 8 move; thereafter, when it is necessary to restore the driving assembly 7 to be spaced apart from the lifting assembly 8, the driver 71 is driven to move the driving rack 73 in the opposite direction, so that the other transposition plate 75 is moved toward the driving gear 74 and contacts the frustum surface at the other end of the driving gear 74, so that the driving gear 74 is moved along the axis to its original position, at which time the middle position of the driving rack 73 is meshed with the driving gear 74, and the driving gear 74 is again located between the two transposition plates 75; during the above movement, the position changes of the transposition plate 75 and the driving gear 74 are as follows Figure 6 shown.

[0040] like Figure 4 and Figure 5 As shown, the lifting assembly 8 includes a rotating sleeve 81 and a lifting column 82. The rotating sleeve 81 vertically penetrates and rotatably connects to the support 2. The lifting column 82 is a T-shaped column. The end with a smaller diameter on the lifting column 82 is a small end, and a first threaded portion is provided on the surface. A second threaded portion is provided on the inner surface of the rotating sleeve 81. The first threaded portion is inserted into the rotating sleeve 81 from the top opening of the rotating sleeve 81 and is screwed with the second threaded portion. The end with a larger diameter on the lifting column 82 is a large end, and is slidably arranged in the clamping block 3; a sliding groove for the lifting column 82 to slide is provided in the clamping block 3, and the large end of the lifting column 82 is arranged in a rectangular block.

[0041] like Figure 4As shown, the reversing assembly 9 includes a transmission rod 91 and a guide rail 92. The transmission rod 91 vertically penetrates and rotatably connects to the support 2. The guide rail 92 is coaxially fixed on the top of the transmission rod 91. The guide rail 92 is transmission-connected to the anti-rocking plate 4. Specifically, the guide rail 92 is cam-shaped. When the guide rail 92 rotates, it drives the anti-rocking plate 4 to approach or move away from the center position so that the pressure wheel 42 can press or detach from the display screen 100.

[0042] It should be noted that if Figure 7 and Figure 8 As shown, a through hole 41 is provided on the anti-tilt plate 4, and after the pressing wheel 42 is pressed on the display screen 100, the through hole 41 is located above the display screen 100, and the corresponding test head 12 located on the display screen 100 can pass through the through hole 41 and press on the display screen 100.

[0043] The strength testing device for display screen production also includes a plurality of right-angle transmission mechanisms, the two ends of the shaft rod 1 5 are respectively connected to the two horizontal transmission rods 91 through the right-angle transmission mechanism, and the two ends of the shaft rod 2 6 are respectively connected to the two longitudinal transmission rods 91 through the right-angle transmission mechanism; the two ends of the horizontal drive sleeve 72 are alternately connected to the two horizontal rotating sleeves 81 through the right-angle transmission mechanism, and the two ends of the longitudinal drive sleeve 72 are alternately connected to the two longitudinal rotating sleeves 81 through the right-angle transmission mechanism. It should be noted that the right-angle transmission mechanism proposed in this embodiment is composed of two mutually matching bevel gears.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A strength testing device for display screen production, characterized in that: include: A test bench (1) for supporting the overall mechanism, four fixture assemblies arranged on the test bench (1) and facing the four sides of the display screen (100), a driving mechanism located between the four fixture assemblies and used to drive the four fixture assemblies, and a detection mechanism arranged above the fixture assemblies; The clamp assembly comprises a clamp block (3) for lifting the display screen (100) and an anti-rocking plate (4) for pressing the display screen (100) onto the clamp block (3); the driving mechanism comprises a shaft rod (5), a shaft rod (6) and two driving shaft sleeves (72); the two driving shaft sleeves (72) are respectively sleeved on the shaft rod (5) and the shaft rod (6) and are axially movable; both ends of the shaft rod (5) and the shaft rod (6) are respectively connected to a reversing assembly (9); both ends of the two driving shaft sleeves (72) are respectively connected to a lifting assembly (8); the reversing assembly (9) drives the anti-rocking plate (4) to move above the display screen (100), and the lifting assembly (8) drives the clamp block (3) to move below the display screen (100); The lifting assembly (8) comprises a rotating sleeve (81) and a lifting column (82), wherein the rotating sleeve (81) penetrates and is rotatably connected to the support (2); the reversing assembly (9) comprises a transmission rod (91) and a guide rail (92), wherein the transmission rod (91) penetrates and is rotatably connected to the support (2); It also includes a plurality of right-angle transmission mechanisms consisting of two bevel gears that match each other; both ends of the shaft rod one (5) and both ends of the shaft rod two (6) are respectively connected to a transmission rod (91) through the right-angle transmission mechanism; and both ends of the two drive shaft sleeves (72) are respectively connected to a rotating sleeve (81) through the right-angle transmission mechanism.

2. A display screen production strength testing device according to claim 1, characterized in that: The clamp assembly also includes a support (2), the support (2) being fixedly connected to the top of the test bench (1), and an inclined slide groove is provided in the clamp block (3), and the inclined slide groove slides on the inclined rail on the support (2).

3. A display screen production strength testing device according to claim 2, characterized in that: One end of the lifting column (82) is screwed into the rotating sleeve (81), and the other end of the lifting column (82) extends into the clamping block (3) and is slidably matched with the clamping block (3).

4. A display screen production strength testing device according to claim 3, characterized in that: The anti-rocking plate (4) is slidably mounted on the support (2); one end of the transmission rod (91) is coaxially fixed to the guide rail (92); and the guide rail (92) is transmission-connected to the end of the anti-rocking plate (4) away from the display screen (100).

5. A display screen production strength testing device according to claim 4, characterized in that: A pressure wheel (42) is rotatably mounted on one end of the anti-sway plate (4) facing the display screen (100) via an axis.

Images