A multi-dimensional self-adaptive paint film adhesion testing device

Abstract

The application relates to the technical field of paint film inspection, and discloses a multi-dimension self-adaptive paint film adhesion force inspection device which comprises a base, an auxiliary assembly is arranged on one side of the upper surface of the base, a driving assembly is fixedly connected to the other side of the upper surface of the base, an inspection assembly is screw-connected to the output end one of the driving assembly, a workbench is screw-connected to the output end two of the driving assembly, a connecting rod one is fixedly connected to one side of the upper surface of the workbench, a rotating ball one is fixedly connected to the top end of the connecting rod one, the workbench is rotationally connected with a fixed plate through the rotating ball one, and two threaded rods one are rotationally connected in the workbench. The flexible film is attached to the inner surface of a workpiece by establishing a negative pressure environment through a fan, the flexible strip in the fixed groove two is expanded and extruded to form three-dimensional clamping force, meanwhile, the gaseous buffer structure of the flexible strip avoids damaging the paint surface due to rigid contact, and the precise detection of special-shaped samples is realized.

Description

Technical Field

[0001] This invention relates to the field of paint film inspection technology, specifically to a multi-dimensional adaptive paint film adhesion testing device. Background Technology

[0002] As a core indicator for coating quality assessment, the accuracy of paint film adhesion testing directly affects the service life and safety performance of industrial products. Although international standards have standardized testing methods, significant challenges remain in practical applications. For example, while the traditional cross-cut adhesion test is simple to operate, it is heavily influenced by human factors, resulting in persistent problems with poor repeatability of test results. In recent years, although electric testing equipment has gradually replaced manual tools, existing equipment has significant shortcomings in environmental simulation capabilities. Some commercially available equipment cannot achieve temperature and humidity control, leading to discrepancies between test data and actual operating conditions.

[0003] More importantly, with the widespread application of irregularly shaped components in aerospace and other fields, conventional planar inspection fixtures are no longer sufficient to meet the demands. The inspection error rate for irregularly shaped workpieces is very high, mainly due to pre-damage to the coating caused by uneven stress distribution in the fixture. Furthermore, existing inspection systems generally separate pretreatment and testing processes, which not only increases operational complexity but may also introduce secondary contamination during sample transfer.

[0004] It is worth noting that the lack of dynamic load simulation technology means that most equipment can only perform static pressure tests, while in practical applications coatings are often subjected to alternating stress. This technological limitation directly affects the engineering applicability of the test results. Therefore, developing a testing device that integrates environmental simulation, dynamic loading, and adaptive fixation functions has become a key breakthrough for improving the level of coating quality assessment. Summary of the Invention

[0005] The purpose of this invention is to provide a multi-dimensional adaptive paint film adhesion testing device, which solves the problems of insufficient environmental simulation capability, poor stability of irregular workpieces, lack of dynamic load testing, and low testing accuracy and cumbersome operation caused by the separation of pretreatment and testing processes in existing paint film adhesion testing equipment.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a multi-dimensional adaptive paint film adhesion testing device, comprising a base, an auxiliary component disposed on one side of the upper surface of the base, a drive component fixedly connected to the other side of the upper surface of the base, a testing component threadedly connected to one output end of the drive component, a worktable threadedly connected to the other output end of the drive component, a connecting rod fixedly connected to one side of the upper surface of the worktable, a rotating ball fixedly connected to the top end of the connecting rod, a fixed plate rotatably connected to the worktable via the rotating ball, and two threaded rods rotatably connected inside the worktable, the two threaded rods being perpendicular to each other. Furthermore, an adjusting seat is threaded onto the outer surface of the fixed plate. Two slides are provided on the lower surface of the fixed plate, the size and direction of which are adapted to the adjusting seat. A connecting hole penetrating the outer surface is provided at the edge of the upper surface of the fixed plate. An offset ring is fixedly connected inside the connecting hole. A second connecting rod is rotatably connected inside the offset ring. A second rotating ball is fixedly connected to the top of the second connecting rod. A first fixing groove is provided on the other side of the upper surface of the worktable. One end of the first fixing groove penetrates the upper surface of the worktable. An elastic ring is fixedly connected to the inner edge of the first fixing groove. An adaptation component is provided inside the fixed plate. A pretreatment component is provided on the upper surface of the base.

[0007] Preferably, the drive assembly includes an L-shaped frame, which is fixedly connected to the other side of the upper surface of the base. A motor is fixedly connected to the upper surface of the base. The output end of the motor passes through the outer surface of the L-shaped frame and is fixedly connected to a transmission rod one. The transmission rod one is rotatably connected inside the L-shaped frame. A gear one is fixedly connected to the end of the transmission rod one away from the motor. A transmission rod two and a transmission rod three are rotatably connected inside the L-shaped frame. A gear two is fixedly connected to one end of the transmission rod two. The gear one meshes with the gear two. The portion of the transmission rod two located outside the L-shaped frame is threadedly connected to the worktable. The transmission rod one and the transmission rod three are connected through a pulley. A bevel gear one is fixedly connected to the end of the transmission rod three away from the pulley.

[0008] Preferably, the inspection assembly includes a rotating cylinder rotatably connected inside the L-shaped frame. A second bevel gear is fixedly connected to the outer surface of the rotating cylinder, and the first bevel gear meshes with the second bevel gear. A third connecting rod is fixedly connected inside the rotating cylinder. A sliding block is fixedly connected to the top end of the third connecting rod. A first spring is fixedly connected between the sliding block and the inner bottom end of the rotating cylinder. The spring is sleeved outside the third connecting rod. A weighted disc abuts against the upper surface of the sliding block. A detection needle is fixedly connected to the bottom end of the third connecting rod.

[0009] Preferably, the auxiliary component includes a heating box, which is fixedly connected to one side of the upper surface of the base. A partition is fixedly connected inside the heating box, and an electric heating wire is fixedly connected to one side of the inner surface of the heating box. A closed door is installed at the top of the heating box, and a gas supply pipe is connected to the top of the heating box. The two ends of the gas supply pipe are located on both sides of the partition. The auxiliary component also includes a cooling box, which is fixedly connected to one side of the upper surface of the base and is located on the outer left side of the heating box.

[0010] Preferably, the adaptation component includes an adaptation groove, which is located at the center of the upper surface of the fixed plate. One end of the adaptation groove penetrates the upper surface of the fixed plate, and a flexible membrane is fixedly connected inside the adaptation groove. Two fixing grooves are provided on both sides of the upper surface of the fixed plate, one end of which penetrates the upper surface of the fixed plate. A flexible strip is fixedly connected inside the fixing groove. A fan is fixedly connected to the upper surface of the base. The input end of the fan is connected to the outside, and the output end of the fan is connected to the adaptation groove and the two fixing grooves through an air inlet pipe.

[0011] Preferably, the pretreatment component includes a decontamination box, which is fixedly connected to the upper surface of the base. The upper surface of the base is provided with a drying groove, and a guide sleeve is fixedly connected to the outer side of the drying groove. The output end of the blower is connected to the guide sleeve.

[0012] Preferably, the upper surface of the fixing plate is threaded with a plurality of fastening bolts.

[0013] Preferably, a slide rail is fixedly connected to the upper surface of the base, and the slide rail is located directly below the worktable.

[0014] Preferably, a second spring is abutted between the fastening bolt and the fixing plate, and the second spring is sleeved on the outside of the fastening bolt.

[0015] Preferably, a shielding cover is installed at the inner top of the adaptation groove and the second fixing groove.

[0016] In summary, the present invention has at least one of the following beneficial technical effects:

[0017] 1. This invention uses a motor to drive transmission rod two to move the worktable horizontally, while simultaneously driving transmission rod three via a belt pulley to drive the bevel gear set to achieve vertical downward pressure of the detection needle. Combined with the elastic buffer of spring one and the counterweight adjustment of the load plate, it can accurately simulate the paint film peeling process under different load conditions, effectively improving the adaptability of adhesion testing.

[0018] 2. This invention uses a fan to create a negative pressure environment, allowing the flexible membrane to adhere to the inner surface of the workpiece. This, combined with the expansion and compression of the flexible strip within the fixing groove, forms a three-dimensional clamping force. Simultaneously, the gaseous buffer structure of the flexible strip prevents rigid contact and damage to the paint surface, enabling accurate testing of irregularly shaped samples. Furthermore, the quick-opening and closing design of the shielding cover outside the fixing groove allows for rapid switching between testing conventional samples and irregularly shaped workpieces, ensuring the comparability of test data for samples of different shapes.

[0019] 3. This invention integrates pretreatment and testing functions. The pretreatment component removes surface impurities through a decontamination chamber and then uses a drying trough with directional airflow from a guide sleeve to achieve rapid drying. In addition, the heating chamber and cooling chamber provide a temperature-changing environment to simulate the actual service conditions of the paint film. This multi-factor coupled testing mechanism can comprehensively evaluate the adhesion variation law of the paint film under different temperature and humidity conditions, and improve the engineering guidance value of the test results. Attached Figure Description

[0020] Figure 1 This is a perspective view of the present invention;

[0021] Figure 2 This is a side view of the present invention;

[0022] Figure 3 This is a schematic diagram of the auxiliary components in this invention;

[0023] Figure 4 This is a schematic diagram of the fixing plate in this invention;

[0024] Figure 5 This is a schematic diagram of the workbench in this invention;

[0025] Figure 6 This is an exploded view of the workbench in this invention;

[0026] Figure 7 This is a schematic diagram of the adaptive component in this invention;

[0027] Figure 8 This is a schematic diagram of the driving component in this invention;

[0028] Figure 9 This is a schematic diagram of the testing component in this invention.

[0029] The components include: 1. Base; 2. Auxiliary components; 3. Drive components; 4. Inspection components; 5. Workbench; 6. Connecting rod one; 7. Rotating ball one; 8. Fixing plate; 9. Threaded rod one; 10. Adjusting seat; 11. Slide rail; 12. Connecting hole; 13. Deflecting ring; 14. Connecting rod two; 15. Rotating ball two; 16. Fixing groove one; 17. Elastic ring; 18. Adaptation components; 19. Pre-treatment components; 301. L-shaped frame; 302. Motor; 303. Transmission rod one; 304. Gear one; 305. Transmission rod two; 306. Transmission rod three; 307. Gear two; 308. Pulley; 309. Bevel gear one. 401. Rotating cylinder; 402. Bevel gear II; 403. Connecting rod III; 404. Sliding block; 405. Spring I; 406. Weight plate; 407. Detection needle; 201. Heating box; 202. Partition plate; 203. Heating wire; 204. Sealing door; 205. Gas supply pipe; 206. Refrigeration box; 1801. Adaptation tank; 1802. Flexible membrane; 1803. Fixing tank II; 1804. Flexible strip; 1805. Fan; 1806. Air inlet pipe; 1901. Decontamination box; 1902. Drying tank; 1903. Guide sleeve; 20. Fastening bolt; 21. Slide rail; 22. Spring II; 23. Shielding cover. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Please see the appendix Figure 1 -Appendix Figure 9This invention provides a multi-dimensional adaptive paint film adhesion testing device, including a base 1. An auxiliary component 2 is disposed on one side of the upper surface of the base 1, and a drive component 3 is fixedly connected to the other side of the upper surface of the base 1. One output end of the drive component 3 is threadedly connected to a testing component 4, and another output end of the drive component 3 is threadedly connected to a worktable 5. A connecting rod 6 is fixedly connected to one side of the upper surface of the worktable 5, and a rotating ball 7 is fixedly connected to the top of the connecting rod 6. A fixed plate 8 is rotatably connected to the worktable 5 through the rotating ball 7. Two threaded rods 9 are rotatably connected inside the worktable 5. The two threaded rods 9 are perpendicular to each other and an adjusting seat 10 is threadedly connected to their outer surfaces. The lower surface of the fixed plate 8 has two slides 11, the size and direction of which are adapted to the adjusting seat 10. The upper surface edge of the fixed plate 8 has a connecting hole 12 that penetrates the outer surface. An offset ring 13 is fixedly connected inside the connecting hole 12. A connecting rod 14 is rotatably connected inside the offset ring 13. A rotating ball 15 is fixedly connected to the top of the connecting rod 14. A fixing groove 16 is provided on the other side of the upper surface of the worktable 5. One end of the fixing groove 16 penetrates the upper surface of the worktable 5. An elastic ring 17 is fixedly connected to the inner edge of the fixing groove 16. An adaptation component 18 is provided inside the fixed plate 8. A pretreatment component 19 is provided on the upper surface of the base 1.

[0032] Specifically, base 1 serves as the basic support platform to ensure the overall structural stability. Auxiliary component 2 achieves environmental simulation pretreatment of samples through a temperature control module. Drive component 3 uses a dual-axis transmission mechanism to synchronously control the vertical pressure of the detection mechanism and the horizontal displacement of the worktable 5. Inspection component 4 achieves precise control of detection pressure through a spring buffer system and an adjustable counterweight module. The worktable 5 drives the adjustment seat 10 to complete planar positioning through a built-in bidirectional threaded transmission mechanism. The ball joint structure formed by connecting rod 6 and rotating ball 7 achieves the pitch angle adjustment of fixed plate 8. Fixed plate 8 forms a planar seat through the sliding cooperation of slide rail 11 and adjustment seat 10. The standard positioning reference, the bias ring 13 in the connecting hole 12 realizes the horizontal rotation angle adjustment of the sample through the linkage of the connecting rod 14 and the rotating ball 15, the fixing groove 16 and the elastic ring 17 form an elastic clamping area to prevent sample displacement, the adaptation component 18 adapts to the contour of the irregular workpiece through the synergistic effect of the flexible contact surface and negative pressure adsorption, the pretreatment component 19 integrates physical cleaning and airflow drying functions to ensure the cleanliness of the sample surface, the threaded rod 9 realizes the precise positioning of the adjustment seat 10 in the XY axis through the orthogonal layout of the dual-axis drive, and the adjustment seat 10 converts the planar motion into the spatial posture adjustment of the fixed plate 8 through the cooperation of the wedge structure and the slide 11.

[0033] The drive assembly 3 includes an L-shaped frame 301, which is fixedly connected to the other side of the upper surface of the base 1. A motor 302 is fixedly connected to the upper surface of the base 1. The output end of the motor 302 passes through the outer surface of the L-shaped frame 301 and is fixedly connected to a transmission rod 303. The transmission rod 303 is rotatably connected inside the L-shaped frame 301. A gear 304 is fixedly connected to the end of the transmission rod 303 away from the motor 302. A transmission rod 305 and a transmission rod 306 are rotatably connected inside the L-shaped frame 301. A gear 307 is fixedly connected to one end of the transmission rod 305. The gear 304 meshes with the gear 307. The part of the transmission rod 305 located outside the L-shaped frame 301 is threadedly connected to the worktable 5. The transmission rod 303 and the transmission rod 306 are connected through a pulley 308. A bevel gear 309 is fixedly connected to the end of the transmission rod 306 away from the pulley 308.

[0034] Specifically, the L-shaped frame 301 serves as a rigid support for the transmission system, ensuring the stability of power transmission. The motor 302 drives the transmission rod 303 through its output shaft to generate rotational power. The meshing structure of gear 304 and gear 307 converts the horizontal axial rotation into vertical axial motion, driving the transmission rod 305 to rotate. The threaded engagement between the transmission rod 305 and the worktable 5 converts the rotational motion into linear displacement, achieving horizontal feed at the inspection station. The belt drive mechanism of the pulley 308 achieves synchronous speed control of the transmission rods 303 and 306. The bevel gear 3 at the end of the transmission rod 306... 09 converts horizontal rotational power into vertical axial torque output through conical meshing. The module matching design of gear 1 304 and gear 2 307 ensures the proportional coordination between the moving speed of the worktable 5 and the pressing rate of the detection component. The lead parameter setting of transmission rod 2 305 realizes the linear correspondence between the displacement of the worktable 5 and the rotation angle of motor 302. The stepped shaft structure of transmission rod 3 306 reduces rotational inertia while ensuring torque transmission efficiency. The V-groove structure of pulley 308 increases the contact area of ​​the transmission belt to prevent slippage. The helical tooth design of bevel gear 1 309 improves meshing smoothness and reduces transmission noise.

[0035] The inspection component 4 includes a rotating cylinder 401, which is rotatably connected inside the L-shaped frame 301. A second bevel gear 402 is fixedly connected to the outer surface of the rotating cylinder 401. A first bevel gear 309 meshes with the second bevel gear 402. A third connecting rod 403 is fixedly connected inside the rotating cylinder 401. A sliding block 404 is fixedly connected to the top of the third connecting rod 403. A first spring 405 is fixedly connected between the sliding block 404 and the inner bottom end of the rotating cylinder 401. The first spring 405 is sleeved on the outside of the third connecting rod 403. A weight plate 406 abuts against the upper surface of the sliding block 404. A detection needle 407 is fixedly connected to the bottom end of the third connecting rod 403.

[0036] Specifically, the rotating cylinder 401 achieves power direction conversion through the meshing of bevel gear 2 402 and bevel gear 1 309. The helical tooth surface design of bevel gear 2 402 ensures smooth torque transmission. Connecting rod 3 403 converts the rotational motion of the rotating cylinder 401 into the vertical linear motion of the detection needle 407. The axial sliding of the sliding block 404 in the inner cavity of the rotating cylinder 401, combined with the elastic deformation of spring 1 405, forms a pressure buffer mechanism. The preload of spring 1 405 sets an adjustable initial threshold for the detection pressure. The counterweight plate 406 achieves detection by increasing or decreasing the counterweight mass. The gradient adjustment of the pressure measurement, the optimized tip geometry of the detection needle 407 ensures the linear accuracy of the scratch test, the guide groove structure on the inner wall of the rotating cylinder 401 restricts the rotational freedom of the sliding block 404 to ensure the vertical motion trajectory, the stepped shaft design of the connecting rod 403 reduces motion inertia while ensuring rigidity, the carburized tooth surface of the bevel gear 402 improves wear resistance and extends service life, the copper-based self-lubricating material of the sliding block 404 reduces frictional loss with the inner wall of the rotating cylinder 401, and the detachable structure design of the detection needle 407 facilitates the replacement of test heads of different specifications.

[0037] The auxiliary component 2 includes a heating box 201, which is fixedly connected to one side of the upper surface of the base 1. A partition 202 is fixedly connected inside the heating box 201, and an electric heating wire 203 is fixedly connected to one side of the inside of the heating box 201. A closed door 204 is installed at the top of the heating box 201, and the top of the heating box 201 is connected to a gas supply pipe 205. The two ends of the gas supply pipe 205 are located on both sides of the partition 202. The auxiliary component 2 also includes a cooling box 206, which is fixedly connected to one side of the upper surface of the base 1 and is located on the outer left side of the heating box 201.

[0038] Specifically, the heating chamber 201 generates a controllable heat source through the heating wire 203 to achieve sample heat treatment. The partition 202 divides the chamber into independent heat exchange chambers to improve heating efficiency. The sealing door 204 adopts a sealing structure to prevent heat loss and ensure operational safety. The gas supply pipe 205 establishes an airflow channel across the partition 202 to achieve hot steam recycling. The cooling chamber 206 is equipped with an independent temperature control system to provide low-temperature environment simulation function. The serpentine arrangement design of the heating wire 203 increases the heat exchange area and accelerates the heating process. The flow guiding structure of the partition 202 optimizes the airflow distribution inside the chamber to avoid local overheating. The corrugated pipe section design of the gas supply pipe 205 compensates for thermal expansion and contraction deformation to maintain airtightness. The double-layered glass observation window of the sealing door 204 facilitates monitoring of the heating process. The inner foam layer structure of the cooling chamber 206 enhances the heat preservation performance and reduces energy consumption. The Y-shaped bifurcation interface of the gas supply pipe 205 realizes bidirectional airflow delivery to form a heat circulation path.

[0039] The adaptation component 18 includes an adaptation groove 1801, which is located at the center of the upper surface of the fixed plate 8. One end of the adaptation groove 1801 penetrates the upper surface of the fixed plate 8. A flexible membrane 1802 is fixedly connected inside the adaptation groove 1801. Fixed grooves 1803 are provided on both sides of the upper surface of the fixed plate 8. One end of the fixed groove 1803 penetrates the upper surface of the fixed plate 8. A flexible strip 1804 is fixedly connected inside the fixed groove 1803. A fan 1805 is fixedly connected to the upper surface of the base 1. The input end of the fan 1805 is connected to the outside. The output end of the fan 1805 is connected to the adaptation groove 1801 and the fixed groove 1803 through an air inlet pipe 1806.

[0040] Specifically, the adapting groove 1801 forms a negative pressure adsorption zone through a through-type structure to accommodate irregularly shaped workpieces. The elastic deformation characteristics of the flexible membrane 1802 adapt to surfaces with different curvatures to achieve contour fitting. The symmetrical layout of the fixing groove 1803 provides auxiliary fixing points to enhance stability. The compressive deformation capacity of the flexible strip 1804 compensates for the assembly gap between the workpiece and the fixing plate 8. The fan 1805 establishes a negative pressure environment through the air inlet pipe 1806, causing the flexible membrane 1802 to generate adsorption force. The gradually narrowing cavity design of the adapting groove 1801 is advantageous. The airflow distribution enhances adsorption efficiency. The silicone surface of the flexible membrane 1802 increases the coefficient of friction to prevent workpiece slippage. The dovetail groove structure of the fixed groove 1803 restricts the displacement direction of the flexible strip 1804 to ensure uniform pressure. The three-way diverter of the air inlet pipe 1806 enables synchronous negative pressure control of the adaptation groove 1801 and the fixed groove 1803. The hollow structure design of the flexible strip 1804 generates radial expansion under negative pressure to enhance the clamping force. The frequency conversion control module of the fan 1805 enables stepless adjustment of the adsorption force.

[0041] The pretreatment component 19 includes a decontamination box 1901, which is fixedly connected to the upper surface of the base 1. A drying trough 1902 is provided on the upper surface of the base 1. A guide sleeve 1903 is fixedly connected to the outer side of the drying trough 1902. The output end of the blower 1805 is connected to the guide sleeve 1903.

[0042] Specifically, the decontamination box 1901 is used to achieve deep cleaning of the sample surface, the grid-type bottom plate design of the drying tank 1902 accelerates airflow penetration and improves drying efficiency, the guide sleeve 1903 is used to concentrate airflow to form a high-speed air curtain to remove residual droplets on the surface, and the bidirectional output function of the fan 1805 realizes the reuse of power for adsorption fixation and drying treatment.

[0043] The upper surface of the fixing plate 8 is threaded with multiple fastening bolts 20.

[0044] Specifically, multiple fastening bolts 20 are used to secure the sample from multiple directions.

[0045] A slide rail 21 is fixedly connected to the upper surface of the base 1, and the slide rail 21 is located directly below the worktable 5.

[0046] Specifically, the slide rail 21 ensures the straightness of the movement trajectory of the worktable 5 through a linear guide structure.

[0047] A second spring 22 is abutting between the fastening bolt 20 and the fixing plate 8, and the second spring 22 is sleeved on the outside of the fastening bolt 20.

[0048] Specifically, spring 22 is used to reduce damage to the sample during tightening.

[0049] A shielding cover 23 is installed at the inner top of the adaptation groove 1801 and the fixing groove 1803.

[0050] Specifically, the shielding cover 23 is used to keep the fixing plate 8 flat when facing a sample with a normal shape.

[0051] Working principle: In actual use, the sample is first placed in the decontamination chamber 1901 and cleaned with the cleaning solution inside, then placed in the drying tank 1902. The blower 1805 is then activated to blow and dry the sample through the guide sleeve 1903, thus completing the pretreatment of the sample. Then, depending on the thickness of the paint film or the material properties of the sample, it is determined whether to perform heat treatment or cold treatment. If heat treatment is required, the heating wire 203 inside the heating chamber 201 is activated to heat the water source inside. Simultaneously, the steam generated by heating is transported to the partition through the gas pipe 205. On the other side of 202, the heating temperature is then selected according to the actual condition of the sample (below 100℃, it is placed directly into hot water; above 100℃, it is placed in high-temperature steam). If cold treatment is required, the cooling box 206 provides a low-temperature environment simulation. After the initial treatment of the sample is completed, the sample can be placed on the fixed plate 8 and then initially fixed by the fastening bolt 20. Then, according to actual needs, the threaded rod 9 drives the adjusting seat 10 to slide along the slide rail 11 between the fixed plate 8 and the worktable 5, thereby fixing the fixed plate 8. The lifting effect is achieved by using the spherical connection of rotating ball 7 to complete the fine adjustment of the XY axis. After determining the angle, the connecting rod 14 is operated to place rotating ball 15 into the fixing groove 16 using the deflection ring 13, and then the elastic ring 17 is used for buffering and fixing, thus completing the secondary fixing. After fixing, the inspection begins. By placing appropriate weights in the load plate 406, the detection needle 407 is lowered to a suitable height. Then, the motor 302 is started to drive the transmission rod 303 to drive the gear 304 and pulley 308 to rotate. Through the meshing of the gears, This causes transmission rods 2 (305) and 3 (306) to rotate. Transmission rod 2 (305) pushes the worktable 5 to move along the slide rail 21. At the same time, the pulley 308 drives transmission rod 3 (306) to drive bevel gear 1 (309) to rotate bevel gear 2 (402). The rotating cylinder 401 connected to it drives connecting rod 3 (403) to rotate. Then, connecting rod 3 (403) drives the detection needle 407 to draw circles on the sample surface. After a period of time, the sample is taken out, the scratches on the sample surface are observed, and the adhesion of the paint film on the sample surface is graded.

[0052] If the sample is irregularly shaped, and the cover 23 outside the adaptation groove 1801 and the fixing groove 1803 can be removed, the fan 1805 is started to supply air through the air inlet pipe 1806 to make the flexible membrane 1802 expand upward and overlap with the inner surface of the irregularly shaped sample. Then the flexible strip 1804 expands downward and squeezes against the flexible membrane 1802 to fix the sample, and then the sample is tested.

[0053] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-dimensional adaptive paint film adhesion testing device, comprising a base (1), characterized in that, An auxiliary component (2) is provided on one side of the upper surface of the base (1), and a drive component (3) is fixedly connected to the other side of the upper surface of the base (1). An inspection component (4) is threaded to one output end of the drive component (3), and a worktable (5) is threaded to the other output end of the drive component (3). A connecting rod (6) is fixedly connected to one side of the upper surface of the worktable (5), and a rotating ball (7) is fixedly connected to the top of the connecting rod (6). A fixed plate (8) is rotatably connected to the worktable (5) through the rotating ball (7). Two threaded rods (9) are rotatably connected inside the worktable (5). The two threaded rods (9) are perpendicular to each other and an adjusting seat (10) is threaded to their outer surfaces. Two slides (11) are provided on the lower surface of the fixed plate (8). The size and direction of the slides (11) are adapted to the adjusting seat (10). The upper surface of the fixed plate (8) A connecting hole (12) penetrating the outer surface is provided at the edge. An offset ring (13) is fixedly connected inside the connecting hole (12). A connecting rod (14) is rotatably connected inside the offset ring (13). A rotating ball (15) is fixedly connected to the top of the connecting rod (14). A fixing groove (16) is provided on the other side of the upper surface of the worktable (5). One end of the fixing groove (16) penetrates the upper surface of the worktable (5). An elastic ring (17) is fixedly connected at the inner edge of the fixing groove (16). The threaded rod (9) achieves precise positioning of the adjustment seat (10) in the XY axis through the orthogonal dual-axis drive. The adjustment seat (10) converts planar motion into spatial posture adjustment of the fixed plate (8) through the cooperation of the wedge structure and the slide (11). An adaptation component (18) is provided inside the fixed plate (8). A pre-processing component (19) is provided on the upper surface of the base (1).The drive assembly (3) includes an L-shaped frame (301), which is fixedly connected to the other side of the upper surface of the base (1). A motor (302) is fixedly connected to the upper surface of the base (1). The output end of the motor (302) passes through the outer surface of the L-shaped frame (301) and is fixedly connected to a transmission rod (303). The transmission rod (303) is rotatably connected inside the L-shaped frame (301). A gear (304) is fixedly connected to the end of the transmission rod (303) away from the motor (302). A transmission rod (305) and a transmission rod (306) are rotatably connected inside the L-shaped frame (301). One end of the transmission rod (305) is fixedly connected to... A second gear (307) is connected, and the first gear (304) meshes with the second gear (307). The portion of the second transmission rod (305) located outside the L-shaped frame (301) is threadedly connected to the workbench (5). The first transmission rod (303) and the third transmission rod (306) are connected through a pulley (308). A bevel gear (309) is fixedly connected to the end of the third transmission rod (306) away from the pulley (308). The inspection assembly (4) includes a rotating cylinder (401), which is rotatably connected inside the L-shaped frame (301). A bevel gear (402) is fixedly connected to the outer surface of the rotating cylinder (401). The first bevel gear (309) meshes with the second gear (307). The bevel gears (402) mesh with each other. A connecting rod (403) is fixedly connected inside the rotating cylinder (401). A sliding block (404) is fixedly connected to the top of the connecting rod (403). A spring (405) is fixedly connected between the sliding block (404) and the inner bottom end of the rotating cylinder (401). The spring (405) is sleeved on the outside of the connecting rod (403). A load-bearing plate (406) abuts against the upper surface of the sliding block (404). A detection needle (407) is fixedly connected to the bottom end of the connecting rod (403). The adaptation component (18) includes an adaptation groove (1801). The adaptation groove (1801) is opened at the center of the upper surface of the fixed plate (8). One end of the adaptation groove (1801) penetrates the upper surface of the fixing plate (8). A flexible membrane (1802) is fixedly connected inside the adaptation groove (1801). Fixing grooves (1803) are provided on both sides of the upper surface of the fixing plate (8). One end of the fixing groove (1803) penetrates the upper surface of the fixing plate (8). A flexible strip (1804) is fixedly connected inside the fixing groove (1803). A fan (1805) is fixedly connected to the upper surface of the base (1). The input end of the fan (1805) is connected to the outside. The output end of the fan (1805) is connected to the adaptation groove (1801) and the fixing groove (1803) through an air inlet pipe (1806).

2. The multi-dimensional adaptive paint film adhesion testing device according to claim 1, characterized in that, The auxiliary component (2) includes a heating box (201), which is fixedly connected to one side of the upper surface of the base (1). A partition (202) is fixedly connected inside the heating box (201). An electric heating wire (203) is fixedly connected to one side of the inner surface of the heating box (201). A closed door (204) is installed at the top of the heating box (201). The top of the heating box (201) is connected to a gas supply pipe (205). The two ends of the gas supply pipe (205) are located on both sides of the partition (202). The auxiliary component (2) also includes a cooling box (206), which is fixedly connected to one side of the upper surface of the base (1). The cooling box (206) is located on the outer left side of the heating box (201).

3. The multi-dimensional adaptive paint film adhesion testing device according to claim 2, characterized in that, The pretreatment component (19) includes a decontamination box (1901), which is fixedly connected to the upper surface of the base (1). A drying groove (1902) is provided on the upper surface of the base (1). A guide sleeve (1903) is fixedly connected to the outside of the drying groove (1902). The output end of the blower (1805) is connected to the guide sleeve (1903).

4. The multi-dimensional adaptive paint film adhesion testing device according to claim 1, characterized in that, The upper surface of the fixing plate (8) is threaded with multiple fastening bolts (20).

5. The multi-dimensional adaptive paint film adhesion testing device according to claim 1, characterized in that, A slide rail (21) is fixedly connected to the upper surface of the base (1), and the slide rail (21) is located directly below the workbench (5).

6. The multi-dimensional adaptive paint film adhesion testing device according to claim 4, characterized in that, A second spring (22) abuts against the fastener (20) and the fixing plate (8), and the second spring (22) is sleeved on the outside of the fastener (20).

7. The multi-dimensional adaptive paint film adhesion testing device according to claim 5, characterized in that, The inner top of the adaptation groove (1801) and the second fixing groove (1803) are fitted with a shielding cover (23).

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