Automatic testing device for fingerprint-proof plating crystal of protective film

Abstract

The utility model discloses a protective film anti-fingerprint plating crystal automatic testing device, and belongs to the technical field of protective film testing. A protective film anti-fingerprint plating crystal automatic test device comprises a test board, a spray head, a test head and a camera, and further comprises a fixed plate which is installed right above the test board, a sliding block is installed below the fixed plate in a sliding mode, and a driving part for driving the sliding block to slide transversely is arranged on the fixed plate; the mounting seat is transversely mounted below the sliding block in a sliding manner, the testing head is fixedly mounted below the mounting seat, a connecting part is arranged on the fixed plate, and when the driving part drives the sliding block to slide, the connecting part drives the mounting seat to slide; the driving part drives the sliding block to slide back and forth below the fixed plate, and the connecting part drives the mounting seat to slide left and right below the sliding block, so that the testing head is driven to rub the surface of a film in multiple directions, and the accuracy of a testing result is improved.

Description

Technical Field

[0001] This utility model relates to the field of protective film testing technology, and in particular to an automatic testing device for anti-fingerprint coating of protective film. Background Technology

[0002] Screen protectors are thin-film protective materials typically used to protect phone screens from scratches, bumps, fingerprints, and other wear and damage from everyday use. They can help extend the lifespan of the phone screen while maintaining screen clarity and touch sensitivity.

[0003] After the mobile phone screen protector is produced, it needs to be tested. The tests generally test whether it has good anti-fingerprint performance and crystal coating effect to ensure that the quality and effect of the film layer meet the requirements.

[0004] The fingerprint resistance test simulates finger contact and friction to assess the protective film's ability to resist fingerprints. The coating effect test involves dropping liquid (such as water or oil) onto the film surface and checking the slippage of the droplet or whether it forms water droplets to evaluate its waterproof and oil-resistant properties. However, when simulating finger rubbing against the film surface, rubbing can only be done in one direction, which differs from reality and leads to inaccurate test results. Utility Model Content

[0005] The purpose of this invention is to solve the problem that when simulating finger friction on the film surface, friction can only be performed in one direction, which is different from the actual situation and leads to inaccurate test results. Therefore, an automatic testing device for anti-fingerprint coating of protective film is proposed.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An automatic testing device for anti-fingerprint coating of protective film includes a test platform, a nozzle, a test head, and a camera fixedly installed above the test platform. It also includes: a fixing plate installed above the test platform, wherein a sliding block is slidably mounted below the fixing plate, and a driving part is provided on the fixing plate to drive the sliding block to slide laterally; and a mounting base slidably mounted below the sliding block, wherein the test head is fixedly mounted below the mounting base, and a connecting part is provided on the fixing plate. The sliding direction of the mounting base is perpendicular to the sliding direction of the sliding block. When the driving part drives the sliding block to slide, the connecting part drives the mounting base to slide.

[0008] To drive the test head to move laterally to rub the membrane, preferably, the driving unit includes a first motor fixedly connected to the top of the fixed plate, a cam fixedly connected to the output end of the first motor, the circumferential surface of the cam contacting the surface of the mounting base, wherein the bottom of the fixed plate is provided with a sliding groove, a guide rod is fixedly connected between the inner walls of the sliding groove, the sliding block is slidably connected to the guide rod, and a first spring is installed between the sliding block and the inner wall of the sliding groove.

[0009] To drive the test head to move in multiple directions to rub the membrane, preferably, the bottom of the sliding block is provided with a sliding groove, a limit rod is fixedly connected between the inner walls of the sliding groove, the mounting base is slidably connected to the limit rod, and a second spring is installed between the mounting base and the inner wall of the sliding groove. A connecting rod is fixedly connected to the outer side of the mounting base, and a protrusion is fixedly connected to the side of the fixing plate near the connecting rod. The protrusion is arranged on the moving path of the connecting rod.

[0010] In order to drive the test head down to press the protective film, preferably, a cylinder is fixedly installed directly above the test platform, and the fixing plate is fixedly connected to the extension end of the cylinder.

[0011] In order to drive the protective film to move for testing, preferably, the top of the test platform is fixedly connected to a first electric slide rail with a first slider, the top of the first slider is fixedly connected to a second electric slide rail with a second slider, the second electric slide rail is perpendicular to the first electric slide rail, the top of the second slider is fixedly connected to a positioning plate, and a suction cup is embedded in the top of the positioning plate.

[0012] To drive the nozzle to oscillate and simulate liquid spraying onto the protective film in different directions, preferably, a delivery pipe is rotatably mounted on the test platform via a rotating shaft, the nozzle is mounted below the delivery pipe, and a feed pipe is fixedly connected to the delivery pipe. A second motor is fixedly mounted above the test platform, and a crank is fixedly connected to the output end of the second motor. A guide block is mounted on the crank, and a connecting plate is fixedly connected to the rotating shaft. The guide block and the connecting plate are slidably connected.

[0013] Compared with the prior art, this utility model provides an automatic testing device for anti-fingerprint coating of protective film, which has the following beneficial effects:

[0014] 1. This automatic testing device for anti-fingerprint coating of protective film drives a sliding block to slide back and forth under the fixed plate through a drive unit, and drives the mounting base to slide left and right under the sliding block through a connecting unit, thereby causing the test head to rub the film surface in multiple directions, which can better simulate actual use conditions and improve the accuracy of test results.

[0015] 2. This automatic testing device for anti-fingerprint coating of protective film, by starting the second motor, drives the nozzle to swing under the transmission of the crank, guide block, connecting plate and rotating shaft, thereby continuously adjusting the angle of the nozzle to spray liquid onto the film surface in different directions, which can simulate more liquid droplet film methods and further improve the accuracy of the test results. Attached Figure Description

[0016] Figure 1 This is an isometric structural schematic diagram of an automatic testing device for anti-fingerprint coating of protective film proposed in this utility model;

[0017] Figure 2 This is a partial cross-sectional view of the fixing plate of the automatic testing device for anti-fingerprint coating of protective film proposed in this utility model;

[0018] Figure 3 This is a partial cross-sectional view of the sliding block of an automatic testing device for anti-fingerprint coating of protective film proposed in this utility model;

[0019] Figure 4 This is a schematic diagram of the nozzle structure of an automatic testing device for anti-fingerprint coating of protective film proposed in this utility model.

[0020] In the diagram: 1. Test platform; 201. Sliding block; 202. First motor; 203. Cam; 204. Slide groove; 205. Guide rod; 206. First spring; 301. Mounting base; 302. Sliding groove; 303. Limiting rod; 304. Second spring; 305. Connecting rod; 306. Protrusion; 4. Camera; 5. Nozzle; 6. Test head; 7. Fixing plate; 8. Cylinder; 9. First electric slide rail; 10. First slider; 11. Second electric slide rail; 12. Second slider; 13. Positioning plate; 14. Suction cup; 15. Rotating shaft; 16. Conveying pipe; 17. Feeding pipe; 18. Second motor; 19. Crank; 20. Guide block; 21. Connecting plate. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] Example:

[0024] Reference Figures 1-4 This utility model provides an automatic testing device for anti-fingerprint coating of protective film, including a test platform 1, a nozzle 5 for simulating liquid droplets, a test head 6 for simulating hand contact and friction with the film, and a camera 4 fixedly installed above the test platform 1. The camera 4 monitors whether fingerprints, oil stains, or other marks are left on the surface during the test. The camera 4 can photograph the surface of the protective film and analyze the clarity and area of ​​the marks through image processing. Two cameras 4 are provided, and four supports are fixedly connected to the top of the test platform 1. Figure 1 As shown, from left to right, the test head 6, the first camera 4, the nozzle 5, and the second camera 4 are respectively installed below the four brackets. Two of the cameras 4 are fixed to the bottom of the brackets by bolts. The test platform 1 is used to fix the protective film and control the movement of the protective film. It also includes: a fixing plate 7, which is installed directly above the test platform 1. A sliding block 201 is slidably installed below the fixing plate 7. The fixing plate 7 is provided with a driving part to drive the sliding block 201 to slide laterally. The sliding direction of the sliding block 201 is back-and-forth sliding. A mounting seat 301 is slidably installed below the sliding block 201. The sliding direction of the mounting seat 301 is active sliding. The test head 6 is fixedly installed below the mounting seat 301. The fixing plate 7 is provided with a connecting part. The sliding direction of the mounting seat 301 is perpendicular to the sliding direction of the sliding block 201. When the driving part drives the sliding block 201 to slide, the connecting part drives the mounting seat 301 to slide.

[0025] During operation, the test head 6 descends to contact and press against the membrane surface. The drive unit drives the sliding block 201 to slide back and forth under the fixed plate 7, and the connecting part drives the mounting base 301 to slide left and right under the sliding block 201. This causes the test head 6 to rub the membrane surface in multiple directions, which can better simulate actual use conditions and improve the accuracy of test results.

[0026] The drive unit includes a first motor 202 fixedly connected to the top of the fixed plate 7. A cam 203 is fixedly connected to the output end of the first motor 202. The circumferential surface of the cam 203 contacts the surface of the mounting base 301. A sliding groove 204 is formed at the bottom of the fixed plate 7. A guide rod 205 is fixedly connected between the inner walls of the sliding groove 204. The guide rod 205 is horizontally positioned. A sliding block 201 is slidably connected to the guide rod 205 and slides back and forth on the guide rod 205. A first spring 206 is installed between the sliding block 201 and the inner wall of the sliding groove 204. A sliding groove 302 is formed at the bottom of the sliding block 201. A limit rod 303 is fixedly connected between the inner walls of the sliding groove 302 and is horizontally positioned. Mounting base 301 is slidably connected to limiting rod 303. Mounting base 301 slides left and right on limiting rod 303. A second spring 304 is installed between mounting base 301 and the inner wall of sliding groove 302. A connecting rod 305 is fixedly connected to the outer side of mounting base 301. A protrusion 306 is fixedly connected to the side of fixing plate 7 near connecting rod 305. The protrusion 306 is set on the moving path of connecting rod 305. The end of connecting rod 305 near protrusion 306 is set as hemispherical. Protrusion 306 is arc-shaped. The number of protrusions 306 is set to 4-6, preferably 5. A cylinder 8 is fixedly installed directly above the test platform 1. The cylinder 8 is fixedly connected to the top of the bracket. The fixing plate 7 is fixedly connected to the telescopic end of cylinder 8.

[0027] During operation, the cylinder 8 is activated, its telescopic end drives the test head 6 to descend and press the protective film, causing fingerprints to appear on the protective film. This also activates the first motor 202, whose output end drives the cam 203 to rotate. The cam 203 presses the sliding block 201, causing the sliding block 201 to slide along the guide rod 205 and compress the first spring 206. After the first spring 206 returns to its original position, the sliding block 201 vibrates back and forth continuously. At the same time, the sliding block 201 drives the mounting base 301 and the test head 6 to move back and forth. The mounting base 301 drives the connecting rod 305 to move synchronously. After the connecting rod 305 contacts the protrusion 306, it is compressed, causing the mounting base 301 to slide along the limit rod 303 and compress the second spring 304. After the second spring 304 returns to its original position, the mounting base 301 drives the test head 6 to vibrate left and right, thus causing the test head 6 to rub the protective film in multiple directions.

[0028] The top of the test platform 1 is fixedly connected to a first electric slide rail 9 with a first slider 10. The first electric slide rail 9 is horizontally set, and the first slider 10 slides left and right on the first electric slide rail 9. The top of the first slider 10 is fixedly connected to a second electric slide rail 11 with a second slider 12. The second electric slide rail 11 is horizontally set and perpendicular to the first electric slide rail 9. The second slider 12 slides back and forth on the second electric slide rail 11. The top of the second slider 12 is fixedly connected to a positioning plate 13. A suction cup 14 is embedded in the top of the positioning plate 13. The suction cup 14 is used to fix and adsorb the protective film onto the positioning plate 13.

[0029] During operation, the protective film is placed on the positioning plate 13 and fixed to the positioning plate 13 by the suction cup 14. The protective film is moved from left to right by controlling the first electric slide rail 9, so that the protective film passes through the test head 6, the first camera 4, the nozzle 5 and the second camera 4 in sequence. The protective film on the positioning plate 13 is moved back and forth by controlling the second electric slide rail 11 to adjust the front and back position of the protective film, so that the test head 6 can perform multi-point testing on the protective film.

[0030] A conveying pipe 16 is rotatably mounted on the test bench 1 via a rotating shaft 15. The rotating shaft 15 is rotatably connected to a support. Nozzles 5 are installed below the conveying pipe 16. The number of nozzles 5 is set to 3-5, preferably 4. A feed pipe 17 is fixedly connected to the conveying pipe 16. The feed pipe 17 passes through the support and is connected to an external test liquid, which can be water or oil. A second motor 18 is fixedly mounted above the test bench 1. The second motor 18 is fixedly connected to the inside of the support. A crank 19 is fixedly connected to the output end of the second motor 18. The crank 19 is rotatably connected to the support. A guide block 20 is mounted on the crank 19. A connecting plate 21 is fixedly connected to the rotating shaft 15. The guide block 20 and the connecting plate 21 are slidably connected.

[0031] During operation, test liquid is fed into the delivery pipe 16 through the feed pipe 17 and sprayed onto the membrane surface through the nozzle 5 to simulate the contact between liquids such as water or oil and the membrane surface, evaluating the membrane's waterproof, oil-proof, and cleaning performance. By starting the second motor 18, its output end drives the crank 19 to rotate. The crank 19 drives the guide block 20 to slide on the connecting plate 21, causing the connecting plate 21 to swing. The connecting plate 21 drives the delivery pipe 16 to swing through the rotating shaft 15, and the delivery pipe 16 drives the nozzle 5 to swing. By continuously adjusting the angle of the nozzle 5, liquid is sprayed onto the membrane surface in different directions, simulating more ways of liquid dripping onto the membrane, further improving the accuracy of the test results.

[0032] This automatic testing device for anti-fingerprint coating on protective films works by placing the protective film on the positioning plate 13 and securing it to the plate using suction cups 14. The first electric slide rail 9 moves the film from left to right, stopping when it reaches directly below the test head 6. The cylinder 8 is then activated, its extension end lowering the test head 6 to press down on the protective film, creating a fingerprint. Simultaneously, the first motor 202 is activated, its output driving the cam 203 to rotate. The cam 203 presses against the sliding block 201, causing it to slide along the guide rod 205. The first spring 206 is compressed and then reset, causing the sliding block 201 to vibrate back and forth continuously. At the same time, the sliding block 201 drives the mounting base 301 and the test head 6 to move back and forth. The mounting base 301 drives the connecting rod 305 to move synchronously. After the connecting rod 305 contacts the protrusion 306, it is squeezed, causing the mounting base 301 to slide along the limit rod 303 and compress the second spring 304. Then the second spring 304 resets, causing the mounting base 301 to drive the test head 6 to vibrate left and right, thereby causing the test head 6 to rub the protective film in multiple directions.

[0033] The test liquid is stopped when the membrane reaches directly above the nozzle 5. The test liquid is introduced into the delivery pipe 16 through the feed pipe 17 and sprayed onto the membrane surface through the nozzle 5 to simulate the contact between liquids such as water or oil and the membrane surface, and to evaluate the membrane's waterproof, oil-proof and cleaning performance. The second motor 18 is started, and its output end drives the crank 19 to rotate. The crank 19 drives the guide block 20 to slide on the connecting plate 21, and the connecting plate 21 swings. The connecting plate 21 drives the delivery pipe 16 to swing through the rotating shaft 15. The delivery pipe 16 drives the nozzle 5 to swing, and the angle of the nozzle 5 is continuously adjusted so that liquid is sprayed onto the membrane surface in different directions. This can simulate more ways of liquid dripping onto the membrane. The protective membrane surface is photographed by two cameras 4 to monitor whether fingerprints, oil stains or other marks are left on the surface during the test.

[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An automatic testing device for anti-fingerprint coating of protective film, comprising a test platform (1), a nozzle (5), a test head (6), and a camera (4) fixedly installed above the test platform (1), characterized in that, Also includes: A fixing plate (7) is installed directly above the test bench (1). Among them, a sliding block (201) is slidably installed below the fixing plate (7), and a driving part for driving the sliding block (201) to slide laterally is provided on the fixing plate (7); The mounting base (301) is slidably mounted below the sliding block (201). The test head (6) is fixedly installed below the mounting base (301), and a connecting part is provided on the fixing plate (7). The sliding direction of the mounting base (301) is perpendicular to the sliding direction of the sliding block (201). When the driving part drives the sliding block (201) to slide, the connecting part drives the mounting base (301) to slide.

2. The automatic testing device for anti-fingerprint coating of protective film according to claim 1, characterized in that, The drive unit includes a first motor (202) fixedly connected to the top of the fixed plate (7). A cam (203) is fixedly connected to the output end of the first motor (202). The circumferential surface of the cam (203) is in contact with the surface of the mounting base (301). The bottom of the fixing plate (7) is provided with a sliding groove (204), and a guide rod (205) is fixedly connected between the inner walls of the sliding groove (204). The sliding block (201) is slidably connected to the guide rod (205), and a first spring (206) is installed between the sliding block (201) and the inner wall of the sliding groove (204).

3. The automatic testing device for anti-fingerprint coating of protective film according to claim 1, characterized in that, The bottom of the sliding block (201) is provided with a sliding groove (302), and a limiting rod (303) is fixedly connected between the inner walls of the sliding groove (302). The mounting base (301) is slidably connected to the limiting rod (303), and a second spring (304) is installed between the mounting base (301) and the inner wall of the sliding groove (302). The mounting base (301) is fixedly connected to a connecting rod (305) on its outer side, and the fixing plate (7) is fixedly connected to a protrusion (306) on the side near the connecting rod (305). The protrusion (306) is arranged on the moving path of the connecting rod (305).

4. The automatic testing device for anti-fingerprint coating of protective film according to claim 1, characterized in that, A cylinder (8) is fixedly installed directly above the test bench (1), and the fixing plate (7) is fixedly connected to the telescopic end of the cylinder (8).

5. The automatic testing device for anti-fingerprint coating of protective film according to claim 1, characterized in that, The top of the test platform (1) is fixedly connected to a first electric slide rail (9) with a first slider (10), and the top of the first slider (10) is fixedly connected to a second electric slide rail (11) with a second slider (12). The second electric slide rail (11) and the first electric slide rail (9) are arranged perpendicular to each other. The top of the second slider (12) is fixedly connected to a positioning plate (13), and a suction cup (14) is embedded in the top of the positioning plate (13).

6. The automatic testing device for anti-fingerprint coating of protective film according to claim 1, characterized in that, A conveying pipe (16) is rotatably mounted on the test bench (1) via a rotating shaft (15). The nozzle (5) is installed below the conveying pipe (16), and a feed pipe (17) is fixedly connected to the conveying pipe (16). The test bench (1) is fixedly mounted with a second motor (18) on top of it. The output end of the second motor (18) is fixedly connected to a crank (19). A guide block (20) is mounted on the crank (19). A connecting plate (21) is fixedly connected to the rotating shaft (15). The guide block (20) and the connecting plate (21) are slidably connected.

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