Device for detecting scratch resistance of tablet computer display screen

Abstract

The invention relates to the technical field of scratch resistance detection of tablet computer display screens, in particular to a scratch resistance detection device for a tablet computer display screen. According to the device for detecting the scratch resistance of the display screens of the tablet personal computer, the scratch resistance of the two display screens can be detected at the same time, the detection accuracy and efficiency are improved, meanwhile, the display screens can be scratched in different intensities and directions, and the use reliability of the display screens is improved. A device for detecting the scratch resistance of a tablet computer display screen comprises a base, a connecting plate and the like, and the connecting plate is connected to the front side of the upper portion of the base. Two to-be-detected tablet computer display screens are placed between the fixing frames, after placement is completed, the second two-way lead screw is rotated, the fixing frames move to get close to each other to clamp the tablet computer display screens, and the tablet computer display screens are fixed to the connecting frames correspondingly; the effects that the anti-scraping performance of the two display screens can be detected at the same time, and the detection accuracy and efficiency are improved are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of anti-scratch performance detection of tablet computer display screens, and in particular to a device for detecting the anti-scratch performance of tablet computer display screens. Background Art

[0002] The tablet display is one of the core components of the tablet and is responsible for displaying all visual content. The quality of the display directly affects the user experience, so the performance of the display is a very important consideration when choosing a tablet. After the tablet display is produced, in order to evaluate the durability of the screen, the tablet display is usually tested for scratch resistance.

[0003] The existing device for testing the scratch resistance of tablet computer display screens is to fix the display screen on a test bench and then move a scraper on the display screen to test the scratch resistance of the display screen. However, the existing device for testing the scratch resistance of the display screen usually only tests one display screen and cannot test the scratch resistance of two display screens at the same time. The lack of comparative analysis results in low accuracy and efficiency in testing the scratch resistance of the tablet computer display screen. In addition, the scraper can only scratch the display screen with a certain intensity and in the same direction, and cannot simulate the scratches that may occur on the tablet computer display screen in different usage environments, thereby failing to ensure the reliability of the display screen during use.

[0004] Therefore, a tablet computer display screen scratch resistance testing device has been developed that can test the scratch resistance of two display screens at the same time, improve the detection accuracy and efficiency, and can scratch the display screens with different intensities and directions to improve the reliability of the display screen. Summary of the invention

[0005] In order to overcome the shortcomings of existing scratch resistance testing devices that usually only test one display screen and cannot test the scratch resistance of two display screens at the same time, lack of comparative analysis, resulting in low accuracy and efficiency in testing the scratch resistance of the tablet computer display screen, and the scraper can only scratch the display screen with a certain intensity and in the same direction, the present invention provides a tablet computer display screen scratch resistance testing device that can test the scratch resistance of two display screens at the same time, improve the detection accuracy and efficiency, and can also scratch the display screens with different intensities and directions, thereby improving the reliability of the display screen.

[0006] The technical solution is: a device for testing the scratch resistance of a tablet computer display screen, comprising a base, a connecting plate, a fixing mechanism and a scratching mechanism. The front side of the upper part of the base is connected to a connecting plate, the base is provided with a fixing mechanism capable of fixing the tablet computer display screen, and the base is also provided with a scratching mechanism capable of performing a scratch test on the tablet computer display screen.

[0007] Furthermore, the fixing mechanism includes a first motor, a first bidirectional screw rod, a movable frame, a connecting frame, a second bidirectional screw rod and a fixed frame. The first motor is connected to the right side of the rear portion of the base, the first motor output shaft is connected to the first bidirectional screw rod, the first bidirectional screw rod is rotatably connected to the base, the left and right parts of the first bidirectional screw rod are both threadedly connected to the movable frame, the front part of the movable frame is slidably connected to the base, the upper part of the movable frame is rotatably connected to the connecting frame, the upper part of the connecting frame is rotatably connected to the second bidirectional screw rod, the front and rear parts of the second bidirectional screw rod are both threadedly connected to the fixed frame, and the fixed frame is slidably connected to the adjacent connecting frame. The two tablet computer screens to be tested are respectively placed between the fixed frames. After placement, the second bidirectional screw rod is rotated to make the fixed frames move close to each other to clamp the tablet computer screens, so that the tablet computer screens are respectively fixed on the connecting frames, and then the first motor is started to drive the first bidirectional screw rod to rotate, so that the movable frames move close to each other, and drive the connecting frames close to each other.

[0008] Furthermore, a knob is provided on the front side of the second bidirectional screw rod.

[0009] Furthermore, the scraping mechanism includes a second motor, a connecting hollow column, an electric push rod, a connecting block, a guide scraping column, a first spring, a movable roller and a connecting curved plate. The middle part of the base is connected to the second motor, the output shaft of the second motor is connected to a connecting hollow column, the upper side of the connecting hollow column is connected to an electric push rod, the telescopic end of the electric push rod is connected to a connecting block, the connecting block is slidably connected to the connecting hollow column, the left and right sides of the connecting block are slidably connected to the guide scraping column, the guide scraping column is connected to the connecting block with a first spring, the front and rear parts of the guide scraping column are rotatably connected to the movable roller, and the connecting Connecting curved plates are clamped on both the front and rear sides of the hollow column, and the moving rollers are in contact and cooperate with adjacent connecting curved plates. The electric push rod is started to push the connecting block to move downward, so that the guide scraper column moves downward to scrape the display screen vertically. During detection, the second motor can be started to drive the connected hollow column to rotate, so that the guide scraper column rotates to scrape the display screen horizontally. During detection, the connecting curved plate can also be installed on the connecting hollow column. When the guide scraper column moves downward, it drives the moving roller to move along the connecting curved plate, so that the guide scraper column moves left and right to knock and scrape the display screen.

[0010] Furthermore, it also includes a locking mechanism, which includes a locking gear, a guide locking block and a second spring. The connecting frame is connected to the locking gear, and the upper front side of the mobile frame is slidably connected to the guide locking block. The guide locking blocks are engaged with adjacent locking gears, and the second spring is connected between the guide locking blocks and the connected mobile frame. The angle of the connecting frame is rotated to adjust the display screen. When the connecting frame rotates, it drives the locking gear to rotate, so that the locking gear squeezes the guide locking block to move downward, and the second spring is squeezed and contracted. After the locking gear stops rotating, the second spring rebounds, so that the guide locking block is reset and engaged with the locking gear again, thereby fixing the angle of the connecting frame.

[0011] Furthermore, it also includes an extension mechanism, which includes a connecting support frame, a connecting rod, a rotating plate and a third spring. The upper side of the guide scraper column is detachably connected to the connecting support frame by bolts, the connecting support frame is connected to a connecting rod, and a plurality of rotating plates are rotatably connected to the connecting rod. Two upper and lower third springs are connected between the rotating plates and the connected connecting rods. The connecting support frame is installed on the guide scraper column by bolts, so that the display screens contact the rotating plate when they are close to each other. When the guide scraper column moves, the rotating plate moves on the display screen due to the force of the third spring.

[0012] Furthermore, an auxiliary mechanism is included, which includes a connecting fixing plate, a fixing column and a fourth spring. The fixing frames are all slidably connected to the connecting fixing plates, and a plurality of fixing columns are connected to the connecting fixing plates. The fixing columns are all slidably connected to adjacent fixing frames, and a fourth spring is connected between the fixing columns and the connected fixing frames. When the display screen is clamped between the fixing frames, the connecting fixing plate is squeezed to move, the fixing column moves, and the fourth spring is squeezed and contracted. After the fixing frames move away from each other, the fourth spring rebounds to push the connecting fixing plate and the fixing column to reset.

[0013] Furthermore, rubber pads are provided on the connecting and fixing plates.

[0014] Furthermore, it also includes a cleaning mechanism, which includes a sliding frame, a guide connecting bracket, a fifth spring and a cleaning roller. The sliding frame is slidably connected to the upper side of the connecting plate, and the guiding connecting bracket is slidably connected to the sliding frame. A plurality of fifth springs are connected between the guiding connecting bracket and the sliding frame, and the cleaning roller is rotatably connected to the guiding connecting bracket. The display screen is removed and placed on the connecting plate, and then the sliding frame is moved to drive the guiding connecting bracket to move. Through the action of the fifth spring, the cleaning roller is brought into contact with the display screen, so that the cleaning roller moves on the display screen.

[0015] Furthermore, a handle is provided on the upper side of the sliding frame.

[0016] Beneficial effects of the present invention: 1. The present invention places two tablet computer display screens to be tested between fixing frames respectively, and after placement, rotates the second bidirectional screw to move the fixing frames closer to each other to clamp the tablet computer display screens, so that the tablet computer display screens are respectively fixed on the connecting frames, thereby achieving the effect of being able to simultaneously test the anti-scratch performance of the two display screens, thereby improving the detection accuracy and efficiency.

[0017] 2. The present invention causes the display screen to continue to move to push the guide scraper column to move inward, and the first spring is squeezed and contracted to adjust the pressure of the guide scraper column on the display screen. Then, the electric push rod is started to push the connecting block to move downward, so that the guide scraper column moves downward to vertically scrape the display screen. The second motor is started to drive the connected hollow column to rotate, so that the guide scraper column rotates to scrape the display screen horizontally, thereby achieving the effect of being able to scrape the display screen with different intensities and directions, thereby improving the reliability of the display screen.

[0018] 3. The present invention installs a connecting curved plate on a connecting hollow column. When the guide scraper moves downward, it drives the movable roller to move along the connecting curved plate, so that the guide scraper moves left and right to knock and scrape the display screen, thereby achieving the effect of simulating the scratches that may occur on the tablet computer display screen in different usage environments.

[0019] 4. When the present invention detects through the display screen, the angle of the connecting frame is rotated to adjust the display screen. When the connecting frame rotates, it drives the locking gear to rotate, so that the locking gear squeezes the guide locking block to move downward, and the second spring is squeezed and contracted. After the locking gear stops rotating, the second spring rebounds, so that the guide locking block is reset and re-engaged with the locking gear to fix the angle of the connecting frame, thereby achieving the effect of being able to tilt the display screen to change the scraping force of the guide scraper on the display screen.

[0020] 5. The present invention installs the connecting support frame on the guide scraper column by bolts, so that the display screens are in contact with the rotating plate when they are close to each other. When the guide scraper column moves, the rotating plate moves on the display screen through the force of the third spring, thereby achieving the effect of being able to perform a comprehensive test on the display screen and ensuring the accuracy of the test of the anti-scratch performance of the display screen.

[0021] 6. When the display screen is clamped between the fixing frames, the present invention squeezes the connecting fixing plate to move, the fixing column moves, and the fourth spring is squeezed and contracts. After the fixing frames move away from each other, the fourth spring rebounds and pushes the connecting fixing plate and the fixing column to reset, thereby achieving the effect of improving the clamping stability of the display screen and avoiding damage to the display screen.

[0022] 7. The present invention removes the display screen and places it on the connecting plate, then moves the sliding frame to drive the guide connecting bracket to move, and through the action of the fifth spring, the cleaning roller contacts the display screen, so that the cleaning roller moves on the display screen, thereby achieving the effect of being able to clean the display screen and facilitating the observation of scratches on the display screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0024] Figure 2 It is a partial three-dimensional structural schematic diagram of the present invention.

[0025] Figure 3 It is a three-dimensional structural schematic diagram of the fixing mechanism of the present invention.

[0026] Figure 4 It is a three-dimensional structural schematic diagram of the fixing mechanism of the present invention.

[0027] Figure 5 It is a schematic diagram of the three-dimensional structure of the scraping mechanism of the present invention.

[0028] Figure 6 It is a schematic diagram of the three-dimensional structure of the scraping mechanism of the present invention.

[0029] Figure 7 It is a three-dimensional structural schematic diagram of the locking mechanism of the present invention.

[0030] Figure 8 It is a schematic diagram of the three-dimensional structure of the extension mechanism of the present invention.

[0031] Fig. 9 It is a schematic diagram of the three-dimensional structure of the extension mechanism of the present invention.

[0032] Fig.10 It is a three-dimensional structural schematic diagram of the auxiliary mechanism of the present invention.

[0033] Fig.11 It is a three-dimensional structural schematic diagram of the cleaning mechanism of the present invention.

[0034] Figure numbers: 1_base, 2_connecting plate, 3_fixing mechanism, 30_first motor, 31_first bidirectional screw rod, 32_moving frame, 33_connecting frame, 34_second bidirectional screw rod, 35_fixed frame, 4_scraping mechanism, 40_second motor, 41_connecting hollow column, 42_electric push rod, 43_connecting block, 44_guide scraping column, 45_first spring, 46_moving roller, 47_connecting curved plate, 5_locking mechanism, 50_locking gear, 51_guide locking block, 52_second spring, 6_extension mechanism, 60_connecting support frame, 61_connecting rod, 62_rotating plate, 63_third spring, 7_auxiliary mechanism, 70_connecting fixed plate, 71_fixed column, 72_fourth spring, 8_cleaning mechanism, 80_sliding frame, 81_guide connecting bracket, 82_fifth spring, 83_cleaning roller. DETAILED DESCRIPTION

[0035] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0036] A device for detecting the scratch resistance of a tablet computer display screen, such as Figure 1 and Figure 2 As shown, it includes a base 1, a connecting plate 2, a fixing mechanism 3 and a scraping mechanism 4. The connecting plate 2 is connected to the front side of the upper part of the base 1, the fixing mechanism 3 is arranged on the base 1, and the scraping mechanism 4 is also arranged on the base 1.

[0037] like Figure 1 , Figure 3 and Figure 4 As shown, the fixing mechanism 3 includes a first motor 30, a first bidirectional screw rod 31, a movable frame 32, a connecting frame 33, a second bidirectional screw rod 34 and a fixed frame 35. The first motor 30 is connected to the right side of the rear of the base 1, and the first bidirectional screw rod 31 is connected to the output shaft of the first motor 30. The first bidirectional screw rod 31 is rotatably connected to the base 1. The left and right parts of the first bidirectional screw rod 31 are both threadedly connected to the movable frame 32, the front part of the movable frame 32 is slidably connected to the base 1, the upper part of the movable frame 32 is rotatably connected to the connecting frame 33, the upper part of the connecting frame 33 is rotatably connected to the second bidirectional screw rod 34, the front side of the second bidirectional screw rod 34 is provided with a knob for easy rotation, the front and rear parts of the second bidirectional screw rod 34 are both threadedly connected to the fixed frame 35, and the fixed frame 35 is slidably connected to the adjacent connecting frame 33.

[0038] like Figure 1 , Figure 5 and Figure 6As shown, the scraping mechanism 4 includes a second motor 40, a connecting hollow column 41, an electric push rod 42, a connecting block 43, a guide scraping column 44, a first spring 45, a movable roller 46 and a connecting curved plate 47. The second motor 40 is connected to the middle part of the base 1, the second motor 40 output shaft is connected to the connecting hollow column 41, the electric push rod 42 is connected to the upper side of the connecting hollow column 41, the electric push rod 42 is connected to the connecting block 43 on the telescopic end, the connecting block 43 is slidably connected to the connecting hollow column 41, the left and right sides of the connecting block 43 are slidably connected to the guide scraping column 44, the guide scraping column 44 is connected to the connecting block 43 with a first spring 45, the front and rear parts of the guide scraping column 44 are rotatably connected to the movable roller 46, the front and rear sides of the connecting hollow column 41 are clamped with the connecting curved plate 47, and the movable roller 46 is in contact with and cooperates with the adjacent connecting curved plate 47.

[0039] When using the present invention, firstly, the base 1 is placed in the anti-scratch performance testing area of ​​the tablet computer display screen, and then the two tablet computer display screens to be tested are placed between the fixing frames 35 respectively. After the placement, the second bidirectional screw rod 34 is rotated to make the fixing frames 35 move closer to each other to clamp the tablet computer display screens, so that the tablet computer display screens are respectively fixed on the connecting frames 33. Then, the first motor 30 is started to drive the first bidirectional screw rod 31 to rotate, so that the moving frames 32 move closer to each other, and drive the connecting frames 33 to move closer to each other, until the display screen contacts the guide scraper 44, so that the display screen continues to move to push the guide scraper 44 to move inward, and the first motor 30 is started to drive the first bidirectional screw rod 31 to rotate, so that the moving frames 32 move closer to each other, and drive the connecting frames 33 to move closer to each other, until the display screen contacts the guide scraper 44, so that the display screen continues to move to push the guide scraper 44 to move inward, and the second ... and the second motor 30 is started to drive the first bidirectional screw rod 31 to rotate, so that the moving frames 32 move closer to each other, and drive the connecting frames 33 to move inward, and the second motor 30 is started to drive the first bidirectional screw rod 31 to rotate, so that the moving frames 32 move closer to each A spring 45 is squeezed and contracted to adjust the pressure of the guide scraper 44 on the display screen, and then the electric push rod 42 is started to push the connection block 43 downward, so that the guide scraper 44 moves downward to scrape the display screen vertically. During the detection, the second motor 40 can be started to drive the connection hollow column 41 to rotate, so that the guide scraper 44 rotates to scrape the display screen horizontally. During the detection, the connection curved plate 47 can also be installed on the connection hollow column 41. When the guide scraper 44 moves downward, it drives the moving roller 46 to move along the connection curved plate 47, so that the guide scraper 44 moves left and right to knock and scrape the display screen. Thereby, the anti-scratch performance of two display screens can be tested at the same time, the detection accuracy and efficiency can be improved, and the display screen can be scraped with different intensities and directions, and the reliability of the display screen can be improved.

[0040] like Figure 1 and Figure 7 As shown, it also includes a locking mechanism 5, which includes a locking gear 50, a guide locking block 51 and a second spring 52. The connecting frame 33 is connected to the locking gear 50, and the upper front side of the movable frame 32 is slidably connected to the guide locking block 51. The guide locking blocks 51 are engaged with the adjacent locking gears 50, and the second spring 52 is connected between the guide locking blocks 51 and the connected movable frame 32.

[0041] The locking mechanism 5 of the device can be used to lock the connecting frame 33. When the display screen is detected, the angle of the connecting frame 33 is rotated to adjust the display screen. When the connecting frame 33 rotates, it drives the locking gear 50 to rotate, so that the locking gear 50 squeezes the guide locking block 51 to move downward, and the second spring 52 is squeezed and contracted. After the locking gear 50 stops rotating, the second spring 52 rebounds, so that the guide locking block 51 is reset and re-engaged with the locking gear 50, thereby fixing the angle of the connecting frame 33, thereby enabling the display screen to be tilted, so as to change the scraping force of the guide scraper 44 on the display screen.

[0042] like Figure 1 , Figure 8 and Fig. 9 As shown, an extension mechanism 6 is also included, and the extension mechanism 6 includes a connecting support frame 60, a connecting rod 61, a rotating plate 62 and a third spring 63. The upper side of the guide scraper column 44 is detachably connected to the connecting support frame 60 by bolts, and the connecting support frame 60 is connected to the connecting rod 61. The connecting rod 61 is rotatably connected to eleven rotating plates 62, and the rotating plates 62 are connected to the connected connecting rods 61 with two upper and lower third springs 63.

[0043] By using the extension mechanism 6 of the device, the display screen can be fully inspected. The connecting support frame 60 is installed on the guide scraper column 44 by bolts, so that the display screens are in contact with the rotating plate 62 when they are close to each other. When the guide scraper column 44 moves, the rotating plate 62 is moved on the display screen by the force of the third spring 63, thereby achieving a comprehensive inspection of the display screen and ensuring the accuracy of the inspection of the anti-scratch performance of the display screen.

[0044] like Figure 1 and Fig.10 As shown, an auxiliary mechanism 7 is also included, and the auxiliary mechanism 7 includes a connecting fixing plate 70, a fixing column 71 and a fourth spring 72. The fixing frames 35 are all slidably connected to the connecting fixing plates 70, and the connecting fixing plates 70 are all provided with rubber pads for clamping the display screen. The connecting fixing plates 70 are all connected to three fixing columns 71, and the fixing columns 71 are all slidably connected to the adjacent fixing frames 35, and the fourth spring 72 is connected between the fixing columns 71 and the connected fixing frames 35.

[0045] By using the auxiliary mechanism 7 of the device, the clamping stability of the display screen can be improved. When the display screen is clamped between the fixing frames 35, the connecting fixing plate 70 is squeezed to move, the fixing column 71 moves, and the fourth spring 72 is squeezed and contracted. After the fixing frames 35 move away from each other, the fourth spring 72 rebounds and pushes the connecting fixing plate 70 and the fixing column 71 to reset, thereby improving the clamping stability of the display screen and preventing the display screen from being damaged.

[0046] like Figure 1 and Fig.11 As shown, a cleaning mechanism 8 is also included, and the cleaning mechanism 8 includes a sliding frame 80, a guide connecting bracket 81, a fifth spring 82 and a cleaning roller 83. The sliding frame 80 is slidably connected to the upper side of the connecting plate 2, and a handle is provided on the upper side of the sliding frame 80 to facilitate grasping and moving. The sliding frame 80 is slidably connected to the guiding connecting bracket 81, and five fifth springs 82 are connected between the guiding connecting bracket 81 and the sliding frame 80. The cleaning roller 83 is rotatably connected to the guiding connecting bracket 81.

[0047] The cleaning mechanism 8 of the device can be used to clean the display screen. After the display screen is scratched, the display screen is removed and placed on the connecting plate 2, and then the sliding frame 80 is moved to drive the guide connecting bracket 81 to move. Through the force of the fifth spring 82, the cleaning roller 83 is brought into contact with the display screen, so that the cleaning roller 83 moves on the display screen, thereby playing a role in cleaning the display screen and facilitating the observation of the scratching condition of the display screen.

[0048] It should be understood that the above description is only for exemplary purposes and is not meant to limit the present invention. Those skilled in the art will appreciate that variations of the present invention will be included within the scope of the claims herein.

Claims

1. A device for detecting the scratch resistance of a tablet computer display screen, characterized in that: The device comprises a base (1), a connecting plate (2), a fixing mechanism (3) and a scraping mechanism (4); the front side of the upper portion of the base (1) is connected to the connecting plate (2); the base (1) is provided with a fixing mechanism (3) capable of fixing a tablet computer display screen; the base (1) is also provided with a scraping mechanism (4) capable of performing a scraping test on the tablet computer display screen.

2. The device for detecting the anti-scratch performance of a tablet computer display screen according to claim 1 is characterized in that: The fixing mechanism (3) comprises a first motor (30), a first bidirectional screw rod (31), a movable frame (32), a connecting frame (33), a second bidirectional screw rod (34) and a fixing frame (35); the first motor (30) is connected to the right side of the rear of the base (1); the first bidirectional screw rod (31) is connected to the output shaft of the first motor (30); the first bidirectional screw rod (31) is rotatably connected to the base (1); the left and right parts of the first bidirectional screw rod (31) are both threadedly connected to the movable frame (32); the front part of the movable frame (32) is slidably connected to the base (1); the upper part of the movable frame (32) is rotatably connected to the connecting frame (33); the upper part of the connecting frame (33) is rotatably connected to the movable frame (32); A second bidirectional screw rod (34) is connected, and both the front and rear parts of the second bidirectional screw rod (34) are threadedly connected to a fixing frame (35), and the fixing frames (35) are slidably connected to adjacent connecting frames (33). Two tablet computer screens to be detected are respectively placed between the fixing frames (35). After placement, the second bidirectional screw rod (34) is rotated to make the fixing frames (35) move closer to each other to clamp the tablet computer screens, so that the tablet computer screens are respectively fixed on the connecting frames (33). Then, the first motor (30) is started to drive the first bidirectional screw rod (31) to rotate, so that the moving frames (32) move closer to each other, and drive the connecting frames (33) to move closer to each other.

3. The device for detecting the anti-scratch performance of a tablet computer display screen according to claim 2 is characterized in that: The front side of the second bidirectional screw rod (34) is provided with a knob.

4. The device for detecting the anti-scratch performance of a tablet computer display screen according to claim 2 is characterized in that: The scraping mechanism (4) comprises a second motor (40), a connecting hollow column (41), an electric push rod (42), a connecting block (43), a guide scraping column (44), a first spring (45), a movable roller (46) and a connecting curved plate (47). The middle part of the base (1) is connected with the second motor (40), the output shaft of the second motor (40) is connected with the connecting hollow column (41), the upper side of the connecting hollow column (41) is connected with the electric push rod (42), the telescopic end of the electric push rod (42) is connected with the connecting block (43), the connecting block (43) is slidably connected to the connecting hollow column (41), the left and right sides of the connecting block (43) are both slidably connected with the guide scraping column (44), the first spring (45) is connected between the guide scraping column (44) and the connecting block (43), and the front and rear parts of the guide scraping column (44) are both rotatable. The movable roller (46) is connected in a dynamic manner, and the front and rear sides of the connecting hollow column (41) are both connected with connecting curved plates (47). The movable rollers (46) are in contact with the adjacent connecting curved plates (47). The electric push rod (42) is started to push the connecting block (43) to move downward, so that the guide scraping column (44) moves downward to scrape the display screen vertically. During detection, the second motor (40) can be started to drive the connecting hollow column (41) to rotate, so that the guide scraping column (44) rotates to scrape the display screen horizontally. During detection, the connecting curved plate (47) can also be installed on the connecting hollow column (41). When the guide scraping column (44) moves downward, the movable roller (46) is driven to move along the connecting curved plate (47), so that the guide scraping column (44) moves left and right to knock and scrape the display screen.

5. The device for detecting the anti-scratch performance of a tablet computer display screen according to claim 4 is characterized in that: The invention also comprises a locking mechanism (5), which comprises a locking gear (50), a guide locking block (51) and a second spring (52). The connecting frame (33) is connected with the locking gear (50), the upper front side of the moving frame (32) is slidably connected with the guide locking block (51), the guide locking block (51) is engaged with the adjacent locking gear (50), and the second spring (52) is connected between the guide locking block (51) and the connected moving frame (32). 2) The angle of the connecting frame (33) is adjusted by rotation to tilt the display screen. When the connecting frame (33) rotates, the locking gear (50) is driven to rotate, so that the locking gear (50) squeezes the guide locking block (51) to move downward, and the second spring (52) is squeezed and contracted. After the locking gear (50) stops rotating, the second spring (52) rebounds, so that the guide locking block (51) is reset and re-engaged with the locking gear (50), thereby fixing the angle of the connecting frame (33).

6. The device for detecting the anti-scratch performance of a tablet computer display screen according to claim 5, characterized in that: The invention also comprises an extension mechanism (6), which comprises a connecting support frame (60), a connecting rod (61), a rotating plate (62) and a third spring (63). The upper side of the guide scraper column (44) is detachably connected to the connecting support frame (60) by bolts. The connecting support frame (60) is connected to the connecting rod (61). The connecting rod (61) is rotatably connected to a plurality of rotating plates (62). The rotating plates (62) are connected to the connected connecting rods (61) by two upper and lower third springs (63). The connecting support frame (60) is mounted on the guide scraper column (44) by bolts, so that the display screens are in contact with the rotating plate (62) when they are close to each other. When the guide scraper column (44) moves, the rotating plate (62) moves and scrapes on the display screen by the action of the third spring (63).

7. The device for detecting the anti-scratch performance of a tablet computer display screen according to claim 6, characterized in that: The invention also comprises an auxiliary mechanism (7), which comprises a connecting fixing plate (70), a fixing column (71) and a fourth spring (72). The fixing frames (35) are all slidably connected with the connecting fixing plates (70), and the connecting fixing plates (70) are all connected with a plurality of fixing columns (71). The fixing columns (71) are all slidably connected with adjacent fixing frames (35), and the fixing columns (71) are all connected with the connected fixing frames (35) with a fourth spring (72). When the display screen is clamped between the fixing frames (35), the connecting fixing plates (70) are squeezed to move, the fixing columns (71) are moved, and the fourth spring (72) is squeezed and contracted. After the fixing frames (35) move away from each other, the fourth spring (72) rebounds to push the connecting fixing plates (70) and the fixing columns (71) to reset.

8. The device for detecting the anti-scratch performance of a tablet computer display screen according to claim 7, characterized in that: The connecting and fixing plates (70) are all provided with rubber pads.

9. The device for detecting the anti-scratch performance of a tablet computer display screen according to claim 7, characterized in that: The cleaning device also comprises a cleaning mechanism (8), which comprises a sliding frame (80), a guide connecting frame (81), a fifth spring (82) and a cleaning roller (83). The upper side of the connecting plate (2) is slidably connected with the sliding frame (80), the guiding connecting frame (81) is slidably connected with the sliding frame (80), a plurality of fifth springs (82) are connected between the guiding connecting frame (81) and the sliding frame (80), and the cleaning roller (83) is rotatably connected with the guiding connecting frame (81). The display screen is removed and placed on the connecting plate (2), and then the sliding frame (80) is moved, which drives the guiding connecting frame (81) to move. Through the action force of the fifth spring (82), the cleaning roller (83) contacts with the display screen, so that the cleaning roller (83) moves on the display screen.

10. The device for detecting the anti-scratch performance of a tablet computer display screen according to claim 9, characterized in that: A handle is provided on the upper side of the sliding frame (80).

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