Coating adhesion testing equipment and use method thereof

Abstract

The invention relates to the technical field of coating adhesion degree testing, and discloses coating adhesion degree testing equipment and a using method thereof.The coating adhesion degree testing equipment comprises a workbench and further comprises a U-shaped frame fixedly installed at the top of the workbench; the turntable is rotationally arranged below the transverse edge of the U-shaped frame; the lifting assembly is arranged on the transverse edge of the U-shaped frame, and the lifting assembly is used for lifting the rotating disc; the surface treatment assembly is used for being arranged below the rotating disc, and the surface treatment assembly is used for polishing and cleaning the surface of the coating; and the testing assembly is arranged at the bottom of the rotating disc and used for testing the adhesion degree of the coating. According to the device, the surface of a coating can be treated firstly, the thickness of the coating at a test part is the same, impurities after polishing can be automatically cleaned, the accuracy of a test result is ensured, and the use effect of the device is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of coating adhesion testing, and in particular to a coating adhesion testing device and a use method thereof. Background Art

[0002] Paint adhesion testing is an important test to evaluate the adhesion between paint and substrates (such as metal, wood, concrete, etc.). The purpose is to detect whether the coating can adhere firmly under different conditions to avoid flaking or falling off. In order to ensure the quality and durability of the paint, special equipment is usually used for adhesion testing.

[0003] For example, a paint adhesion test device disclosed in the patent with authorization announcement number CN218382333U can test the adhesion of the paint, but it does not have the function of uniform coating thickness on the test plate before the test, resulting in different coating thicknesses affecting the test results and reducing the effect of use. Therefore, it is urgent to design a paint adhesion test device. Summary of the invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art and to propose a coating adhesion testing device and a method of using the same.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A coating adhesion test device comprises a workbench, two symmetrically arranged pressing plates are fixed on the top of the workbench by bolts, and further comprises:

[0007] U-shaped frame, which is fixed on the top of the workbench;

[0008] A turntable is rotatably arranged below the horizontal side of the U-shaped frame;

[0009] A lifting assembly is arranged on the horizontal side of the U-shaped frame and is used to lift the turntable;

[0010] A surface treatment component is arranged under the turntable and is used for grinding and cleaning the coating surface;

[0011] A test component is arranged at the bottom of the turntable and is used to test the adhesion of the coating.

[0012] As a further technical solution of the present invention, the test assembly includes: a third spring rod, the third spring rod is vertically fixed on the bottom of the turntable, the fixed end and the telescopic end of the third spring rod are connected by a spline sliding connection, and a clamp is fixedly installed on the bottom of the telescopic end of the third spring rod.

[0013] As a further technical solution of the present invention, a sticky disc is arranged under the clamp, a clamping groove is opened on the top side of the sticky disc, a cutting tube is sleeved on the outside of the third spring rod, a fourth spring rod is vertically fixedly installed on the surface of the cutting tube, and the fixed ends of the two fourth spring rods are fixedly installed on the bottom of the turntable.

[0014] As a further technical solution of the present invention, a ring is slidably provided on the fixed end surface of the third spring rod, and Z-shaped plates are fixedly installed on the opposite sides of the ring. The two Z-shaped plates are fixedly installed on the inner wall of the cutting tube, and a spiral groove is opened on the fixed end surface of the third spring rod, and a sliding column is slidably installed in the spiral groove, and the end of the sliding column is fixedly installed on the inner wall of the ring.

[0015] As a further technical solution of the present invention, the surface treatment component includes: a first spring rod, there are two first spring rods, the fixed ends of the two first spring rods are fixedly installed on the bottom of the turntable, the fixed end and the telescopic end of the first spring rod are connected by a spline sliding connection, the bottom of the telescopic ends of the two first spring rods are fixedly installed with connecting plates, and the bottom of the two connecting plates are respectively installed with brush plates and grinding plates.

[0016] As a further technical solution of the present invention, a fixed end of one of the first spring rods is sleeved with a one-way bearing, the outer ring of the one-way bearing is fixedly sleeved with the second pulley, the fixed end of the other first spring rod is fixedly sleeved with the first pulley, belts are sleeved on the surfaces of the first pulley and the second pulley, a first motor is installed on the top of the turntable, and the output shaft of the first motor is installed on the top of the corresponding first spring rod.

[0017] As a further technical solution of the present invention, a plurality of second spring rods are fixedly installed in a ring shape on the surface of the first spring rod, a rectangular block is fixedly installed on the telescopic end of each second spring rod, a second connecting rod is rotatably installed on the bottom of each rectangular block, a first connecting rod is rotatably installed on the end of each second connecting rod, and a corresponding connecting disk top is rotatably installed on the end of each first connecting rod.

[0018] As a further technical solution of the present invention, the lifting assembly includes: a horizontal plate, which is horizontally arranged below the horizontal side of the U-shaped frame, and a hydraulic telescopic rod is vertically installed on the top of the horizontal side of the U-shaped frame, and the output shaft of the hydraulic telescopic rod is fixedly installed on the top of the horizontal plate.

[0019] As a further technical solution of the present invention, the turntable is rotatably installed at the bottom of the horizontal plate, a second motor is installed on the top of the horizontal plate, and the output shaft of the second motor is installed at the center of the top of the turntable.

[0020] A method for using a coating adhesion testing device comprises the following steps:

[0021] S1: First, fix the plate with paint by the pressing plate, and then start the first motor. The first motor drives the corresponding first spring rod and the first pulley to rotate. The first pulley rotates the belt, and the belt rotates to drive the second pulley to rotate. At this time, the rotation of the second pulley can drive another first spring rod to rotate through the one-way bearing. The rotation of the two first spring rods drives the connecting plate and the second spring rod to rotate. The rotation of the connecting plate drives the brush plate and the grinding plate to rotate. The rotation of the second spring rod drives the rectangular block to rotate. The centrifugal force generated by the rotation of the rectangular block will cause the rectangular block to move away from the corresponding first spring rod. The movement of the rectangular block drives the movement of the second connecting rod. The movement of the second connecting rod drives the movement of the first connecting rod. The movement of the first connecting rod drives the connecting plate to move downward and generates tension on the first spring rod. The downward movement of the connecting plate drives the brush plate and the grinding plate to move downward, and the grinding plate can grind the area to be tested, which not only achieves the same thickness of the paint in the test area, but also realizes the processing of the adhesion in the test area, ensures the adhesion consistency between the adhesive plate and the paint surface, and helps to improve the accuracy of the test.

[0022] S2: After the area to be tested is polished, the first motor is reversed and the second motor is started synchronously. Due to the setting of the one-way bearing, the first motor is reversed to drive the first spring rod corresponding to the brush plate to rotate, and the brush plate will rotate on its own. In addition, the second motor drives the turntable to rotate, and the rotation of the turntable drives the components thereon to revolve, so that the brush plate can further clean the area polished by the grinding disc;

[0023] S3: When the sticky disc rotates to the test area, the turntable stops rotating, and the electric telescopic rod is started synchronously to drive the horizontal plate to move downward. The horizontal plate moves downward and drives the components on it to move downward. It should be noted that the initial positions of the sticky disc and the cutting cylinder are lower than the brush disc and the grinding disc. When the sticky disc moves downward, it will contact and adhere to the polished area. As the third spring rod continues to move downward, it will generate elastic force and make the cutting cylinder contact the paint on the outer edge of the sticky disc, ensuring the adhesion strength between the sticky disc and the paint. When the cutting cylinder contacts the paint, the third spring rod continues to When it continues to move downward, the fourth spring rod will also generate elastic force, and due to the arrangement of the spiral groove, the sliding column and the ring, when the fixed end of the third spring rod continues to move downward, the sliding column will move along the spiral groove as a path, and the ring can be further rotated. The rotation of the ring drives the cutting cylinder to rotate, so as to achieve the cutting of the paint on the outer edge of the sticky disc, avoiding the connection between the paint in the non-test area and the paint in the test area. Finally, the sticky disc is moved upward by the electric telescopic rod, so that the side view of the paint adhesion can be completed, which is convenient and quick, thereby improving the use effect of the equipment.

[0024] The beneficial effects of the present invention are:

[0025] Firstly, the present invention can process the coating surface first by setting the testing component and the surface treatment component, so as to achieve the same coating thickness at the testing part, and can also automatically clean the impurities after grinding, thereby ensuring the accuracy of the test results and improving the use effect of the device;

[0026] Secondly, the present invention, through the setting of the testing component, the lifting component and the surface treatment component, can quickly detect the adhesion of the paint, and can automatically cut the paint in the inspection area to achieve the effect of improving the detection efficiency, thereby improving the use effect of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a structural schematic diagram of a coating adhesion testing device proposed by the present invention;

[0028] Figure 2 A schematic diagram of a cross-sectional structure of a U-shaped frame of a coating adhesion test device proposed by the present invention;

[0029] Figure 3 A schematic diagram of a U-shaped frame of a coating adhesion test device proposed by the present invention when viewed from above;

[0030] Figure 4 for Figure 3 A magnified schematic diagram of part A;

[0031] Figure 5 A schematic diagram of a brush plate and a grinding plate and a connection structure of a coating adhesion test device proposed by the present invention;

[0032] Figure 6 A schematic diagram of the cross-sectional structure of a cutting barrel of a coating adhesion test device proposed by the present invention;

[0033] Figure 7 This is a schematic structural diagram of a coating adhesion testing device proposed by the present invention after the clamp and adhesive disc are separated from the fourth spring rod and the collar.

[0034] In the figure: 1. workbench; 2. U-shaped frame; 3. pressing plate; 4. hydraulic telescopic rod; 5. turntable; 6. first motor; 7. brush plate; 8. grinding disc; 9. connecting disc; 10. cross plate; 11. cutting cylinder; 12. sticking disc; 13. first spring rod; 14. rectangular block; 15. second spring rod; 16. first connecting rod; 17. second connecting rod; 18. belt; 19. first pulley; 20. second pulley; 21. one-way bearing; 22. clamp; 23. third spring rod; 24. fourth spring rod; 25. collar; 26. spiral groove; 27. slide column; 28. clamp groove. DETAILED DESCRIPTION

[0035] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0036] 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.

[0037] Please see attached Figure 1 -Attached Figure 7 , a coating adhesion test device, comprising a workbench 1, two symmetrically arranged pressing plates 3 are fixed on the top of the workbench 1 by bolts, and also comprising: a U-shaped frame 2, a turntable 5, a lifting assembly, a surface treatment assembly and a testing assembly, the U-shaped frame 2 is fixedly installed on the top of the workbench 1, the turntable 5 is rotatably arranged below the horizontal side of the U-shaped frame 2, the lifting assembly is arranged on the horizontal side of the U-shaped frame 2, the lifting assembly is used to lift the turntable 5, the surface treatment assembly is used to be arranged below the turntable 5, the surface treatment assembly is used to grind and clean the coating surface, the testing assembly is arranged at the bottom of the turntable 5, and the testing assembly is used to test the adhesion of the coating;

[0038] As described above, the coating surface can be processed first to achieve the same coating thickness at the test site, and impurities after grinding can be automatically cleaned to ensure the accuracy of the test results.

[0039] Please see attached Figure 1 -Attached Figure 7 In a preferred embodiment, the test assembly includes: a third spring rod 23, the third spring rod 23 is vertically fixedly installed at the bottom of the turntable 5, the fixed end and the telescopic end of the third spring rod 23 are slidably connected by a spline, a clamp 22 is fixedly installed at the bottom of the telescopic end of the third spring rod 23, an adhesive disc 12 is arranged below the clamp 22, a clamping groove 28 is provided on the top side of the adhesive disc 12, a cutting cylinder 11 is sleeved on the outside of the third spring rod 23, a fourth spring rod 24 is vertically fixedly installed on the surface of the cutting cylinder 11, the fixed ends of the two fourth spring rods 24 are fixedly installed at the bottom of the turntable 5, a sleeve ring 25 is slidably sleeved on the surface of the fixed end of the third spring rod 23, a Z-shaped plate is fixedly installed on the opposite sides of the sleeve ring 25, and the two Z-shaped plates are fixedly installed on the inner wall of the cutting cylinder 11, a spiral groove 26 is provided on the surface of the fixed end of the third spring rod 23, a sliding column 27 is slidably installed in the spiral groove 26, and the end of the sliding column 27 is fixedly installed on the inner wall of the sleeve ring 25;

[0040] Specifically, the ring 25 can be rotated, and the rotation of the ring 25 drives the cutting cylinder 11 to rotate, so as to cut the paint on the outer edge of the adhesive plate 12, avoiding the connection between the paint in the non-test area and the paint in the test area, and finally moving the adhesive plate 12 upward by the hydraulic telescopic rod 4.

[0041] Please see attached Figure 1 -Attached Figure 5 In a preferred embodiment, the surface treatment component includes: a first spring rod 13, there are two first spring rods 13, the fixed ends of the two first spring rods 13 are fixedly installed at the bottom of the turntable 5, the fixed end and the telescopic end of the first spring rod 13 are connected by spline sliding, the bottom of the telescopic ends of the two first spring rods 13 are fixedly installed with a connecting plate 9, the bottom of the two connecting plates 9 are respectively installed with a brush plate 7 and a grinding plate 8, one of the fixed ends of the first spring rods 13 is sleeved with a one-way bearing 21, the outer ring of the one-way bearing 21 is fixedly sleeved with a second pulley 20, and the fixed end of the other first spring rod 13 is fixedly sleeved A first pulley 19 is connected, and a belt 18 is sleeved on the surface of the first pulley 19 and the second pulley 20. A first motor 6 is installed on the top of the turntable 5, and the output shaft of the first motor 6 is installed on the top of the corresponding first spring rod 13. A plurality of second spring rods 15 are fixedly installed in an annular shape on the surface of the first spring rod 13, and a rectangular block 14 is fixedly installed on the telescopic end of each second spring rod 15. A second connecting rod 16 is rotatably installed at the bottom of each rectangular block 14, and a first connecting rod 17 is rotatably installed at the end of each second connecting rod 16, and each end of the first connecting rod 17 is rotatably installed at the top of the corresponding connecting disk 9;

[0042] Preferably, the grinding disc 8 can be used to grind the area to be tested, which not only achieves the same thickness of the paint in the test area, but also processes the adhesive in the test area, ensuring the adhesion consistency between the adhesive disc 12 and the paint surface.

[0043] Please see attached Figure 1 -Attached Figure 4 In a preferred embodiment, the lifting assembly includes: a horizontal plate 10, the horizontal plate 10 is horizontally arranged below the horizontal side of the U-shaped frame 2, a hydraulic telescopic rod 4 is vertically installed on the top of the horizontal side of the U-shaped frame 2, the output shaft of the hydraulic telescopic rod 4 is fixedly installed on the top of the horizontal plate 10, the turntable 5 is rotatably installed on the bottom of the horizontal plate 10, a second motor is installed on the top of the horizontal plate 10, and the output shaft of the second motor is installed at the top center of the turntable 5;

[0044] Furthermore, the hydraulic telescopic rod 4 drives the connecting components on the horizontal plate 10 to move, so as to test the adhesion of the coating.

[0045] Working principle of the present invention:

[0046] First, fix the plate with paint by the pressing plate 3, and then start the first motor 6. The first motor 6 drives the corresponding first spring rod 13 and the first pulley 19 to rotate. The first pulley 19 rotates the belt 18, and the belt 18 rotates to drive the second pulley 20 to rotate. At this time, the rotation of the second pulley 20 can drive another first spring rod 13 to rotate through the one-way bearing 21. The rotation of the two first spring rods 13 drives the connecting plate 9 and the second spring rod 15 to rotate. The rotation of the connecting plate 9 drives the brush plate 7 and the grinding plate 8 to rotate. The rotation of the second spring rod 15 drives the rectangular block 14 to rotate. The rotation of the rectangular block 14 generates a separation The centrifugal force will cause the rectangular block 14 to move away from the corresponding first spring rod 13, and the movement of the rectangular block 14 drives the second connecting rod 17 to move, and the movement of the second connecting rod 17 drives the first connecting rod 16 to move, and the movement of the first connecting rod 16 drives the connecting plate 9 to move downward and causes the first spring rod 13 to generate tension, and the connecting plate 9 moves downward to drive the brush plate 7 and the grinding plate 8 to move downward, so that the grinding plate 8 can grind the area to be tested, which not only achieves the same thickness of the paint in the test area, but also realizes the processing of the adhesive in the test area, ensures the adhesion consistency between the adhesive plate 12 and the paint surface, and helps to improve the accuracy of the test;

[0047] After the area to be tested is polished, the first motor 6 is reversed and the second motor is started synchronously. Due to the setting of the one-way bearing 21, the first motor 6 reverses to drive the first spring rod 13 corresponding to the brush plate 7 to rotate, and the brush plate 7 rotates on itself. In addition, the second motor drives the turntable 5 to rotate, and the rotation of the turntable 5 drives the components thereon to revolve, so that the brush plate 7 can further clean the area polished by the grinding disc 8;

[0048] When the sticking disc 12 rotates to the test area, the turntable 5 stops rotating, and the hydraulic telescopic rod 4 is started synchronously to drive the horizontal plate 10 to move downward. The horizontal plate 10 moves downward and drives the components thereon to move downward. It should be noted that the initial positions of the sticking disc 12 and the cutting cylinder 11 are lower than the brush disc 7 and the grinding disc 8. When the sticking disc 12 moves downward, it will contact and adhere to the polished area. As the third spring rod 23 continues to move downward, the third spring rod 23 will generate elastic force, and the coating on the outer edge of the cutting cylinder 11 and the sticking disc 12 will contact, thereby ensuring the adhesion strength between the sticking disc 12 and the coating. When the cutting cylinder 11 contacts the coating, the third spring rod 23 When it continues to move downward, the fourth spring rod 24 will also generate elastic force, and due to the arrangement of the spiral groove 26, the sliding column 27 and the ring 25, when the fixed end of the third spring rod 23 continues to move downward, the sliding column 27 will move along the spiral groove 26 as a path, and the ring 25 can be further rotated. The rotation of the ring 25 drives the cutting cylinder 11 to rotate, so as to achieve the cutting of the paint on the outer edge of the adhesive disc 12, avoiding the connection between the paint in the non-test area and the paint in the test area. Finally, the adhesive disc 12 is moved upward by the hydraulic telescopic rod 4 to complete the test of the paint adhesion, which is convenient and quick, thereby improving the use effect of the equipment.

[0049] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A coating adhesion test device, comprising a workbench (1), wherein two symmetrically arranged pressing plates (3) are fixed to the top of the workbench (1) by bolts, wherein: Also includes: A U-shaped frame (2), wherein the U-shaped frame (2) is fixedly mounted on the top of the workbench (1); A turntable (5), the turntable (5) being rotatably disposed below the horizontal side of the U-shaped frame (2); A lifting assembly, the lifting assembly being arranged on a horizontal side of the U-shaped frame (2), and the lifting assembly being used for lifting the turntable (5); A surface treatment component, the surface treatment component is used to be arranged below the turntable (5), and the surface treatment component is used to grind and clean the paint surface; A test component is arranged at the bottom of the turntable (5), and is used to test the adhesion of the coating.

2. A coating adhesion testing device according to claim 1, characterized in that: The test assembly comprises: a third spring rod (23), the third spring rod (23) is vertically fixedly installed at the bottom of the turntable (5), the fixed end and the telescopic end of the third spring rod (23) are slidably connected via a spline, and a clamp (22) is fixedly installed at the bottom of the telescopic end of the third spring rod (23).

3. A coating adhesion testing device according to claim 2, characterized in that: An adhesive disc (12) is arranged below the clamp (22), a clamping groove (28) is provided on the top side of the adhesive disc (12), a cutting cylinder (11) is sleeved on the outside of the third spring rod (23), a fourth spring rod (24) is vertically fixedly installed on the surface of the cutting cylinder (11), and the fixed ends of the two fourth spring rods (24) are fixedly installed on the bottom of the turntable (5).

4. A coating adhesion testing device according to claim 3, characterized in that: A sleeve ring (25) is slidably mounted on the fixed end surface of the third spring rod (23), and Z-shaped plates are fixedly mounted on opposite sides of the sleeve ring (25). The two Z-shaped plates are fixedly mounted on the inner wall of the cutting cylinder (11). A spiral groove (26) is formed on the fixed end surface of the third spring rod (23), and a slide column (27) is slidably mounted in the spiral groove (26). The end of the slide column (27) is fixedly mounted on the inner wall of the sleeve ring (25).

5. A coating adhesion testing device according to claim 4, characterized in that: The surface treatment component comprises: a first spring rod (13), wherein there are two first spring rods (13), the fixed ends of the two first spring rods (13) are fixedly mounted on the bottom of the rotating disk (5), the fixed end and the telescopic end of the first spring rod (13) are slidably connected via a spline, the bottoms of the telescopic ends of the two first spring rods (13) are fixedly mounted with a connecting disk (9), and the bottoms of the two connecting disks (9) are respectively mounted with a brush disk (7) and a grinding disk (8).

6. A coating adhesion testing device according to claim 5, characterized in that: A fixed end of one of the first spring rods (13) is sleeved with a one-way bearing (21), and an outer ring of the one-way bearing (21) is fixedly sleeved with a second pulley (20); a fixed end of another first spring rod (13) is fixedly sleeved with a first pulley (19), and the surfaces of the first pulley (19) and the second pulley (20) are sleeved with a belt (18); a first motor (6) is installed on the top of the turntable (5), and an output shaft of the first motor (6) is installed on the top of the corresponding first spring rod (13).

7. A coating adhesion testing device according to claim 6, characterized in that: A plurality of second spring rods (15) are fixedly mounted in an annular shape on the surface of the first spring rod (13); a rectangular block (14) is fixedly mounted on the telescopic end of each second spring rod (15); a second connecting rod (16) is rotatably mounted on the bottom of each rectangular block (14); a first connecting rod (17) is rotatably mounted on the end of each second connecting rod (16); and a corresponding top of a connecting plate (9) is rotatably mounted on the end of each first connecting rod (17).

8. A coating adhesion testing device according to claim 7, characterized in that: The lifting assembly comprises: a transverse plate (10), wherein the transverse plate (10) is horizontally arranged below the transverse side of the U-shaped frame (2), a hydraulic telescopic rod (4) is vertically installed on the top of the transverse side of the U-shaped frame (2), and an output shaft of the hydraulic telescopic rod (4) is fixedly installed on the top of the transverse plate (10).

9. A coating adhesion testing device according to claim 8, characterized in that: The turntable (5) is rotatably mounted on the bottom of the transverse plate (10), a second motor is mounted on the top of the transverse plate (10), and an output shaft of the second motor is mounted at the top center of the turntable (5).

10. The method for using the coating adhesion testing device according to claim 9, characterized in that: The following steps are involved: S1: First, the plate with the coating is fixed by the pressing plate (3), and then the first motor (6) is started. The first motor (6) drives the corresponding first spring rod (13) and the first pulley (19) to rotate. The first pulley (19) rotates the belt (18), and the belt (18) rotates to drive the second pulley (20). At this time, the rotation of the second pulley (20) can drive another first spring rod (13) to rotate through the one-way bearing (21). The rotation of the two first spring rods (13) drives the connecting plate (9) and the second spring rod (15) to rotate. The rotation of the connecting plate (9) drives the brush plate (7) and the grinding plate (8) to rotate. The rotation of the second spring rod (15) drives the rectangular block (14) to rotate. The rectangular block (1 4) The centrifugal force generated by the rotation causes the rectangular block (14) to move in a direction away from the corresponding first spring rod (13), the movement of the rectangular block (14) drives the second connecting rod (17) to move, the movement of the second connecting rod (17) drives the first connecting rod (16) to move, the movement of the first connecting rod (16) drives the connecting plate (9) to move downward and causes the first spring rod (13) to generate a pulling force, the connecting plate (9) moves downward and drives the brush plate (7) and the grinding plate (8) to move downward, then the grinding plate (8) can grind the area to be tested, not only achieving the same thickness of the paint in the test area, but also achieving the processing of the adhesive in the test area, ensuring the adhesion consistency between the adhesive plate (12) and the paint surface, and helping to improve the accuracy of the test; S2: After the area to be tested is polished, the first motor (6) is reversed and the second motor is started synchronously. Due to the setting of the one-way bearing (21), the first motor (6) is reversed to drive the first spring rod (13) corresponding to the brush disc (7) to rotate, and the brush disc (7) will rotate on its own. In addition, the second motor drives the rotating disc (5) to rotate, and the rotation of the rotating disc (5) drives the components thereon to revolve, so that the brush disc (7) can further clean the area polished by the grinding disc (8); S3: When the sticky disc (12) rotates to the test area, the turntable (5) stops rotating, and the electric telescopic rod is synchronously started to drive the horizontal plate (10) to move downward. The downward movement of the horizontal plate (10) drives the components thereon to move downward. It should be noted that the initial positions of the sticky disc (12) and the cutting cylinder (11) are lower than the brush disc (7) and the grinding disc (8). When the sticky disc (12) moves downward, it will contact and adhere to the polished area. As the third spring rod (23) continues to move downward, the third spring rod (23) will generate elastic force, and the coating on the outer edge of the cutting cylinder (11) and the sticky disc (12) will contact, thereby ensuring the adhesion strength between the sticky disc (12) and the coating. When the cutting cylinder (11) contacts the coating, the third spring rod (23) will release the elastic force. When the spring rod (23) continues to move downward, the fourth spring rod (24) also generates elastic force, and due to the arrangement of the spiral groove (26), the slide column (27) and the collar (25), when the fixed end of the third spring rod (23) continues to move downward, the slide column (27) moves along the spiral groove (26), and the collar (25) is further rotated. The rotation of the collar (25) drives the cutting cylinder (11) to rotate, so that the coating on the outer edge of the adhesive disc (12) is cut, and the connection between the coating in the non-test area and the coating in the test area is avoided. Finally, the adhesive disc (12) is moved upward by the electric telescopic rod, so that the side view of the coating adhesion can be completed, which is convenient and quick, thereby improving the use effect of the device.

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