A coating adhesion testing device

Abstract

The present invention belongs to the technical field of coatings, and specifically is a coating adhesion detection device, comprising a detection table, a receiving plate is installed above the detection table, a coating plate is installed above the receiving plate, the upper end surface of the coating plate is smeared with coating to be detected, a support frame is installed on the side wall of the detection table, a threaded rod is rotatably arranged inside the support frame, the end of the threaded rod is connected to the output end of a motor, the motor is installed inside the support frame, and a bonding disk is arranged at the bottom of the threaded rod; the threaded rod is controlled to rotate upward so that the threaded rod drives the bonding disk to move upward, and when the bonding disk is gradually separated from the coating plate, the adhesion of the coating can be indirectly measured by observing the coating still existing on the surface of the coating plate and the viscosity of the combined glue, and at the same time, by changing different glues, that is, different glues have different viscosities, and observing how much coating is left on the coating plate, the adhesion of the coating under different glues can be detected.

Description

Technical Field

[0001] The invention belongs to the technical field of coatings, in particular to a coating adhesion detection device. Background Art

[0002] A coating film is a layer of coating applied to the surface of an object. It is a material used to protect, beautify or change the properties of its surface. The coating film can be various types of coatings, such as paint, varnish, glue, etc. They can be used on the surfaces of different materials such as metal, wood, plastic, glass, etc. The coating needs to be tested for adhesion during the production process.

[0003] The prior art also proposes some solutions for coating adhesion detection. For example, a patent application with publication number CN115372248A discloses a water-based coating adhesion detection device, including a workbench, a fixing unit and a detection unit; the existing detection method has the following problems: the plate to be tested cannot be fixed in a limited position, so the plate to be tested lacks stability and is prone to shaking, which poses certain safety hazards; the operation steps are cumbersome, and the use of the above-mentioned detection method for adhesion detection of different coatings has detection deviations, affecting the detection accuracy; the invention first applies corrosive liquid to the upper end of the detection plate, during which friction is generated between the straight scraper rod and the arc scraper rod and the corroded water-based coating, so that the water-based coating can be tested in multiple stages at one time to improve the detection accuracy of the water-based coating.

[0004] Although the above technical solution avoids the problem of shaking of the plate during the detection process by fixing the unit, there are still other problems in actual operation. For example, the method of detecting the adhesion of the paint only by corrosive liquid is inconvenient and not conducive to observing whether the adhesion of the paint changes under different conditions.

[0005] To this end, the present invention provides a coating adhesion detection device. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is: a paint adhesion detection device described in the present invention includes a detection table, a receiving plate is installed above the detection table, a coating plate is installed above the receiving plate, the upper end surface of the coating plate is coated with the paint to be detected, a support frame is installed on the side wall of the detection table, a threaded rod is rotatably arranged inside the support frame, the end of the threaded rod is connected to the output end of the motor, the motor is installed inside the support frame, a bonding disk is arranged at the bottom of the threaded rod, glue is arranged inside the bonding disk, the glue is used to bond and fix the bonding disk and the coating plate, and a gluing mechanism is arranged inside the bonding disk, the gluing mechanism is used to bond and fix the bonding disk and the coating plate.

[0008] Preferably, a limiting circular disc is installed on the upper end surface of the bonding disc, a limiting circular groove is provided inside the limiting circular disc, and a rotating plate is installed at the bottom of the threaded rod, and the rotating plate is rotatably arranged inside the limiting circular groove; during operation, when the threaded rod is rotated by an external motor, the threaded rod will simultaneously drive the rotating plate to rotate inside the limiting circular groove. Such a design can facilitate the threaded rod to drive the bonding disc up and down when rotating, which is beneficial to the detection of coating adhesion.

[0009] Preferably, the glue coating mechanism includes a connecting bracket installed on the side wall of the bonding disk, contact 1 is installed at the bottom of the connecting bracket, contact 2 is installed at the side wall of the supporting plate at a position corresponding to contact 1, a glue storage tank is installed on the side wall of the supporting frame, a glue outlet pipe is installed on the side wall of the glue storage tank, and the glue outlet pipe extends to the inside of the bonding disk at one end away from the glue storage tank; during operation, when the threaded rod drives the bonding disk to move downward, the bonding disk will simultaneously drive the connecting bracket and contact 1 to move downward, and when the bottom of the bonding disk contacts the upper end surface of the coating plate, contact 1 and contact 2 will contact each other, and the external circuit is connected, and the external control pump will control the glue liquid inside the glue storage tank to enter the contact position between the bonding disk and the coating plate through the glue outlet pipe, thereby realizing the function of automatic glue coating. After the glue solidifies, it is convenient for subsequent detection of the adhesion of the coating.

[0010] Preferably, a receiving concave plate is provided at the bottom of the bonding disk, the diameter of the receiving concave plate is smaller than the diameter of the bonding disk, and the glue outlet hose is inserted into the interior of the receiving concave plate.

[0011] Preferably, two embedded rods are installed on the upper end surface of the receiving concave plate, and the two embedded rods are inserted into the interior of the bonding disk, and a groove matching the embedded rods is opened inside the bonding disk, and a through-slot is opened on the surface of each of the embedded rods, and a clamping column is slidably arranged above the bonding disk, and the clamping column is inserted into the through-slot. It should be noted that the glue inside the replaced receiving concave plate can be removed by an external treatment agent, so as to facilitate the subsequent reuse of the receiving concave plate.

[0012] Preferably, a spring is sleeved on the outer surface of the clamping column, one end of the spring is connected to the side wall of the clamping column, and the other end is connected to the top of the bonding disk; when working, the spring is provided to facilitate the clamping column to be stably stuck in the through-slot slot and facilitate the adhesion detection of the coating.

[0013] Preferably, round rods are fixedly installed on the four edges above the receiving plate, and an L-shaped pressure seat is slidably arranged inside each of the round rods, and a rubber sleeve is sleeved on the end surface of the L-shaped pressure seat; an oil cylinder is installed on the side wall of the receiving plate through a bracket, and a pressure frame is installed on the telescopic end of the oil cylinder, and the bottom of the pressure frame is connected to the side wall of the L-shaped pressure seat; when working, in normal use, the four L-shaped pressure seats above the receiving plate are pressed on the upper end surface of the coating plate, so as to ensure that the paint on the surface of the coating plate is in a stable state when being tested, which is convenient for testing the adhesion of the coating; when the coated plate needs to be taken out after the test is completed, the oil cylinder is controlled to operate so that its telescopic end drives the pressure frame to move upward, so that the pressure frame drives all the L-shaped pressure seats to move upward, that is, the L-shaped pressure seat is no longer pressed against the coating plate, and then the staff can take out the coated plate.

[0014] Preferably, the coating plate is slidably disposed on the upper end surface of the receiving plate, a push rod is installed on the side wall of the coating plate, a wedge block is installed on the side wall of the pressing frame, and the end of the push rod contacts the inclined surface of the wedge block.

[0015] Preferably, a side wall of the wedge block is provided with a limiting ring groove adapted to the push rod.

[0016] Preferably, an electric heating wire is installed below the receiving plate, and the electric heating wire is connected to an external controller via a power line.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. The coating adhesion detection device described in the present invention controls the glue coating mechanism to allow the glue to flow into the interior of the bonding disc and contact the surface of the coating plate. After the glue solidifies, the bonding disc can be fixed to the coating plate, and then the threaded rod is controlled to rotate upward again, so that the threaded rod drives the bonding disc to move upward. When the bonding disc is gradually separated from the coating plate, the coating adhesion can be indirectly measured by observing the coating still remaining on the surface of the coating plate and the viscosity of the combined glue. At the same time, by changing different glues, that is, different glues have different viscosities, and observing how much coating is left on the coating plate, the adhesion of the coating under different glues can be detected.

[0019] 2. The paint adhesion testing device described in the present invention, when it is necessary to replace different glues to test the adhesion of the paint, the staff pulls the clamping column to make the clamping column disengage from the through-slot, and then manually takes out the receiving concave plate from the bonding disk, and then places the new receiving concave plate in the bonding disk, and replaces the remaining glue storage tanks, and then sends the remaining types of glue into the new receiving concave plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] Figure 1 is a stereogram of the present invention;

[0022] Figure 2 It is a schematic diagram of the structure of the oil cylinder part in the present invention;

[0023] Figure 3 It is a schematic diagram of the structure of the threaded rod part in the present invention;

[0024] Figure 4 It is a schematic diagram of the structure of the rotating plate part in the present invention;

[0025] Figure 5 It is a schematic diagram of the structure of contact 1 and contact 2 in the present invention;

[0026] Figure 6 It is a schematic diagram of the round rod structure in the present invention;

[0027] Figure 7 It is a schematic diagram of the pressure frame structure of the present invention;

[0028] Figure 8 It is a schematic diagram of the receiving concave plate structure in the present invention;

[0029] Fig. 9 It is a schematic diagram of the clamping column structure in the present invention;

[0030] Fig.10 It is a schematic diagram of the push rod structure in the present invention;

[0031] Fig.11 It is a schematic diagram of the structure of the electric heating wire in the present invention.

[0032] In the figure: 1. test table; 2. receiving plate; 201. coating plate; 3. support frame; 4. threaded rod; 401. rotating plate; 5. bonding disk; 6. limiting disk; 601. limiting circular groove; 7. connecting bracket; 8. contact one; 9. contact two; 10. glue storage tank; 11. glue outlet hose; 12. receiving concave plate; 13. embedded rod; 131. through-slot; 14. clamping column; 15. round rod; 16. L-shaped pressure seat; 17. oil cylinder; 18. pressure frame; 19. push rod; 20. wedge block; 21. electric heating wire. DETAILED DESCRIPTION

[0033] 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.

[0034] like Figures 1 to 11 As shown, a coating adhesion testing device described in an embodiment of the present invention comprises a testing platform 1, a receiving plate 2 is installed above the testing platform 1, a coating plate 201 is installed above the receiving plate 2, the upper end surface of the coating plate 201 is coated with the coating to be tested, a supporting frame 3 is installed on the side wall of the testing platform 1, a threaded rod 4 is rotatably arranged inside the supporting frame 3, the end of the threaded rod 4 is connected to the output end of the motor, the motor is installed inside the supporting frame 3, a bonding disc 5 is arranged at the bottom of the threaded rod 4, the inside of the bonding disc 5 is provided with glue, the glue is used to bond and fix the bonding disc 5 and the coating plate 201, and a gluing mechanism is arranged inside the bonding disc 5, the gluing mechanism is used to bond and fix the bonding disc 5 and the coating plate 201;

[0035] During operation, the paint to be tested is first applied to the coating plate 201. After the paint is formed, the motor is controlled to drive the threaded rod 4 to rotate downward, so that the threaded rod 4 drives the bonding disc 5 to move downward. When the bonding disc 5 contacts the coating plate 201, the glue coating mechanism is controlled to allow the glue to flow into the inside of the bonding disc 5 and contact the surface of the coating plate 201. After the glue solidifies, the bonding disc 5 can be fixed to the coating plate 201. Then, the threaded rod 4 is controlled to rotate upward again, so that the threaded rod 4 drives the bonding disc 5 to move upward. When the bonding disc 5 is gradually separated from the coating plate 201, the adhesion of the paint can be indirectly measured by observing the paint still remaining on the surface of the coating plate 201 and the viscosity of the combined glue. At the same time, by changing different glues, that is, different glues have different viscosities, and observing how much paint is left on the coating plate 201, the adhesion of the paint under different glues can be detected.

[0036] A limiting disc 6 is installed on the upper end surface of the bonding disc 5, and a limiting circular groove 601 is provided inside the limiting disc 6. A rotating plate 401 is installed at the bottom of the threaded rod 4, and the rotating plate 401 is rotatably arranged inside the limiting circular groove 601. During operation, when the threaded rod 4 is rotated by an external motor, the threaded rod 4 will simultaneously drive the rotating plate 401 to rotate inside the limiting circular groove 601. Such a design can facilitate the threaded rod 4 to drive the bonding disc 5 to move up and down when rotating, which is beneficial to the detection of the adhesion of the coating.

[0037] The glue coating mechanism includes a connecting bracket 7 installed on the side wall of the bonding disk 5, a contact 1 8 is installed at the bottom of the connecting bracket 7, a contact 2 9 is installed at the side wall of the receiving plate 2 at a position corresponding to the contact 1 8, a glue storage tank 10 is installed on the side wall of the supporting frame 3, and a glue outlet pipe 11 is installed on the side wall of the glue storage tank 10, and the glue outlet pipe 11 extends to the inside of the bonding disk 5 at one end away from the glue storage tank 10; during operation, when the threaded rod 4 drives the bonding disk 5 to move downward, the bonding disk 5 will simultaneously drive the connecting bracket 7 and the contact 1 8 to move downward, and when the bottom of the bonding disk 5 contacts the upper end surface of the coating plate 201, the contact 1 8 and the contact 2 9 will contact each other, and the external circuit is connected at this time, and the external control pump will control the glue liquid in the glue storage tank 10 to enter the contact position between the bonding disk 5 and the coating plate 201 through the glue outlet pipe 11, so as to realize the function of automatic glue coating, and after the glue solidifies, it is convenient for the subsequent detection of the adhesion of the coating.

[0038] The bottom of the bonding disk 5 is provided with a receiving concave plate 12, the diameter of the receiving concave plate 12 is smaller than the diameter of the bonding disk 5, and the glue outlet pipe 11 is inserted into the interior of the receiving concave plate 12; when working, when the glue liquid in the glue storage tank 10 is discharged through the glue outlet pipe 11, the glue liquid will enter the interior of the receiving concave plate 12, refer to the attached Figure 8 As shown, since the diameter of the receiving concave plate 12 is smaller than the diameter of the bonding disk 5, the glue will be on the inner side of the receiving concave plate 12 and will not overflow the outer side of the bonding disk 5. This can facilitate the combination of the receiving concave plate 12 and the paint, and facilitate the detection of the paint adhesion.

[0039] Two embedded rods 13 are installed on the upper end surface of the receiving concave plate 12. The two embedded rods 13 are inserted into the inside of the bonding disc 5. The bonding disc 5 is provided with a groove adapted to the embedded rods 13. The surface of each embedded rod 13 is provided with a through-slot 131. A clamping column 14 is slidably provided above the bonding disc 5. The clamping column 14 is inserted into the inside of the through-slot 131.

[0040] During operation, when the receiving concave plate 12 and the bonding disc 5 are in normal use, as shown in the attached Figure 8 and Fig. 9 As shown, at this time, under the action of the clamping column 14 being clamped in the through-slot 131, the receiving concave plate 12 can be fixed under the bonding disk 5, so that when the receiving concave plate 12 and the bonding disk 5 are away from the top of the coating plate 201 in the future, the receiving concave plate 12 will not be separated from the bonding disk 5; when it is necessary to replace different glues to test the adhesion of the coating, the staff can pull the clamping column 14 to make the clamping column 14 disengage from the through-slot 131, and then manually take out the receiving concave plate 12 from the bonding disk 5, and then place the new receiving concave plate 12 in the bonding disk 5, and replace the remaining glue storage tanks 10, and then send the remaining types of glue into the new receiving concave plate 12;

[0041] It should be noted that the glue inside the replaced receiving concave plate 12 can be removed by an external treatment agent, so as to facilitate the subsequent reuse of the receiving concave plate 12.

[0042] The outer surface of the clamping column 14 is sleeved with a spring, one end of the spring is connected to the side wall of the clamping column 14, and the other end is connected to the top of the bonding disk 5; when working, the spring is provided to facilitate the clamping column 14 to be stably clamped in the through-slot 131 and facilitate the adhesion detection of the paint.

[0043] Round rods 15 are fixedly installed on the edges of the upper four sides of the receiving plate 2, and an L-shaped pressing seat 16 is slidably arranged inside each round rod 15, and a rubber sleeve is sleeved on the end surface of the L-shaped pressing seat 16; a cylinder 17 is installed on the side wall of the receiving plate 2 through a bracket, and a pressing frame 18 is installed on the telescopic end of the cylinder 17, and the lower side of the pressing frame 18 is connected to the side wall of the L-shaped pressing seat 16;

[0044] During operation, in normal use, the four L-shaped pressure seats 16 above the receiving plate 2 are pressed on the upper end surface of the coating plate 201, so as to ensure that the coating on the surface of the coating plate 201 is in a stable state when being tested, which is convenient for testing the adhesion of the coating; when the coating plate 201 needs to be taken out after the test is completed, the oil cylinder 17 is controlled to operate so that its telescopic end drives the pressure frame 18 to move upward, so that the pressure frame 18 drives all the L-shaped pressure seats 16 to move upward, that is, the L-shaped pressure seats 16 no longer press against the coating plate 201, and then the staff can take out the coating plate 201.

[0045] The coating plate 201 is slidably arranged on the upper end surface of the receiving plate 2, and a push rod 19 is installed on the side wall of the coating plate 201, and a wedge block 20 is installed on the side wall of the pressing frame 18, and the end of the push rod 19 contacts the inclined surface of the wedge block 20; during operation, when the position of the coating plate 201 needs to be changed, the pressing frame 18 is driven to move upward by controlling the telescopic end of the oil cylinder 17, so that the pressing frame 18 first drives the L-shaped pressing seat 16 away from the coating plate 201, and the pressing frame 18 will simultaneously drive the wedge block 20 to move during the upward movement process. Since the end of the push rod 19 contacts the inclined surface of the wedge block 20, the inclined surface of the wedge block 20 will push the push rod 19 and the coating plate 201 to move a certain distance. Such a design can not only ensure that the coating plate 201 is fixed, but also facilitate the subsequent movement of the coating plate 201, so that the coating detection position on the surface of the coating plate 201 changes, thereby improving the comprehensiveness of the coating adhesion detection and facilitating the subsequent use of the coating.

[0046] The side wall of the wedge block 20 is provided with a limiting ring groove matched with the push rod 19; the limiting ring groove is provided to facilitate the wedge block 20 to push the push rod 19, so that the position of the coating plate 201 changes.

[0047] An electric heating wire 21 is installed under the receiving plate 2, and the electric heating wire 21 is connected to an external controller through a power line. During the coating adhesion test, the electric heating wire 21 can be controlled by the external controller to heat the coating so that the temperature of the coating itself changes, thereby changing the test environment of the coating and improving the scope of subsequent use of the coating.

[0048] During operation, the coating to be tested is first applied to the coating plate 201. After the coating is formed, the motor is controlled to drive the threaded rod 4 to rotate downward, so that the threaded rod 4 drives the bonding disc 5 to move downward. When the bonding disc 5 contacts the coating plate 201, the glue coating mechanism is controlled to make the glue flow into the inside of the bonding disc 5 and contact the surface of the coating plate 201. After the glue solidifies, the bonding disc 5 can be fixed to the coating plate 201. Then, the threaded rod 4 is controlled to rotate upward again, so that the threaded rod 4 drives the bonding disc 5 to move upward. When the bonding disc 5 is gradually separated from the coating plate 201, the adhesion of the coating can be indirectly measured by observing the coating still existing on the surface of the coating plate 201 and the viscosity of the combined glue. At the same time, by changing different glues, that is, different glues have different viscosities, and observing how much coating is left on the coating plate 201, the adhesion of the coating under different glues can be detected.

[0049] When the threaded rod 4 drives the bonding disc 5 to move downward, the bonding disc 5 will also drive the connecting bracket 7 and the contact 1 8 to move downward. When the bottom of the bonding disc 5 contacts the upper end surface of the coating plate 201, the contact 1 8 and the contact 2 9 will contact each other. At this time, the external circuit is connected, and the external control pump will control the glue inside the glue storage tank 10 to enter the contact position between the bonding disc 5 and the coating plate 201 through the glue outlet pipe 11, so as to realize the function of automatic glue coating. After the glue solidifies, it is convenient for the subsequent detection of the adhesion of the coating. When the glue inside the glue storage tank 10 is discharged through the glue outlet pipe 11, the glue will enter the inside of the receiving concave plate 12. Figure 8 As shown, since the diameter of the receiving concave plate 12 is smaller than the diameter of the bonding disc 5, the glue will be inside the receiving concave plate 12 and will not overflow the outside of the bonding disc 5, so that the receiving concave plate 12 can be combined with the paint and the adhesion of the paint can be tested;

[0050] When the receiving concave plate 12 and the bonding disc 5 are in normal use, as shown in the attached Figure 8 and Fig. 9As shown, at this time, under the action of the clamping column 14 being clamped in the through-slot 131, the receiving concave plate 12 can be fixed under the bonding disk 5, so that when the receiving concave plate 12 and the bonding disk 5 are away from the top of the coating plate 201 in the future, the receiving concave plate 12 will not be separated from the bonding disk 5; when it is necessary to replace different glues to test the adhesion of the coating, the staff can pull the clamping column 14 to make the clamping column 14 disengage from the through-slot 131, and then manually take out the receiving concave plate 12 from the bonding disk 5, and then place the new receiving concave plate 12 in the bonding disk 5, and replace the remaining glue storage tanks 10, and then send the remaining types of glue into the new receiving concave plate 12;

[0051] During normal use, the four L-shaped pressure seats 16 above the receiving plate 2 are pressed against the upper end surface of the coating plate 201, so as to ensure that the coating on the surface of the coating plate 201 is in a stable state when being tested, which is convenient for testing the adhesion of the coating; when the coating plate 201 needs to be taken out after the test is completed, the oil cylinder 17 is controlled to operate so that its telescopic end drives the pressure frame 18 to move up, so that the pressure frame 18 drives all the L-shaped pressure seats 16 to move up, that is, the L-shaped pressure seats 16 are no longer pressed against the coating plate 201, and then the staff can take out the coating plate 201; when the position of the coating plate 201 needs to be changed, through The telescopic end of the control cylinder 17 drives the pressure frame 18 to move upward, so that the pressure frame 18 first drives the L-shaped pressure seat 16 away from the coating plate 201, and the pressure frame 18 will also drive the wedge block 20 to move during the upward movement. Since the end of the push rod 19 contacts the inclined surface of the wedge block 20, the inclined surface of the wedge block 20 will push the push rod 19 and the coating plate 201 to move a certain distance. Such a design can not only ensure that the coating plate 201 is fixed, but also facilitate the subsequent movement of the coating plate 201, so that the paint detection position on the surface of the coating plate 201 changes, thereby improving the comprehensiveness of the paint adhesion detection and facilitating the subsequent use of the paint.

[0052] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A coating adhesion testing device, characterized in that: The invention comprises a testing platform (1), wherein a receiving plate (2) is installed above the testing platform (1), a coating plate (201) is installed above the receiving plate (2), the upper end surface of the coating plate (201) is coated with a coating to be tested, a support frame (3) is installed on the side wall of the testing platform (1), a threaded rod (4) is rotatably arranged inside the support frame (3), the end of the threaded rod (4) is connected to the output end of a motor, the motor is installed inside the support frame (3), a bonding disc (5) is arranged at the bottom of the threaded rod (4), glue is arranged inside the bonding disc (5), and the glue is used to bond and fix the bonding disc (5) and the coating plate (201), and a gluing mechanism is arranged inside the bonding disc (5), and the gluing mechanism is used to bond and fix the bonding disc (5) and the coating plate (201); The glue coating mechanism comprises a connecting bracket (7) mounted on the side wall of the bonding disk (5), a contact point 1 (8) being mounted on the bottom of the connecting bracket (7), a contact point 2 (9) being mounted on the side wall of the receiving plate (2) at a position corresponding to the contact point 1 (8), a glue storage tank (10) being mounted on the side wall of the support frame (3), a glue outlet pipe (11) being mounted on the side wall of the glue storage tank (10), and an end of the glue outlet pipe (11) away from the glue storage tank (10) extending to the interior of the bonding disk (5); A receiving concave plate (12) is provided at the bottom of the bonding disk (5), the diameter of the receiving concave plate (12) is smaller than the diameter of the bonding disk (5), and the rubber outlet pipe (11) is inserted into the interior of the receiving concave plate (12); Round rods (15) are fixedly installed at the edges of the upper four sides of the receiving plate (2), and an L-shaped pressing seat (16) is slidably arranged inside each of the round rods (15), and a rubber sleeve is sleeved on the end surface of the L-shaped pressing seat (16); a cylinder (17) is installed on the side wall of the receiving plate (2) through a bracket, and a pressing frame (18) is installed at the telescopic end of the cylinder (17), and the lower side of the pressing frame (18) is connected to the side wall of the L-shaped pressing seat (16); The coating plate (201) is slidably arranged on the upper end surface of the receiving plate (2), a push rod (19) is installed on the side wall of the coating plate (201), a wedge block (20) is installed on the side wall of the pressing frame (18), and the end of the push rod (19) is in contact with the inclined surface of the wedge block (20); The side wall of the wedge block (20) is provided with a limiting ring groove adapted to the push rod (19).

2. A coating adhesion testing device according to claim 1, characterized in that: A limiting circular disc (6) is installed on the upper end surface of the bonding disc (5), a limiting circular groove (601) is provided inside the limiting circular disc (6), and a rotating plate (401) is installed at the bottom of the threaded rod (4), and the rotating plate (401) is rotatably arranged inside the limiting circular groove (601).

3. A coating adhesion testing device according to claim 1, characterized in that: Two embedded rods (13) are installed on the upper end surface of the receiving concave plate (12), and the two embedded rods (13) are inserted into the interior of the bonding disk (5). The interior of the bonding disk (5) is provided with a groove matched with the embedded rods (13), and the surface of each embedded rod (13) is provided with a through-slot (131). A clamping column (14) is slidably arranged above the bonding disk (5), and the clamping column (14) is inserted into the interior of the through-slot (131).

4. A coating adhesion testing device according to claim 3, characterized in that: A spring is sleeved on the outer surface of the clamping column (14), one end of the spring is connected to the side wall of the clamping column (14), and the other end is connected to the top of the bonding disk (5).

5. The coating adhesion testing device according to claim 1, characterized in that: An electric heating wire (21) is installed below the receiving plate (2), and the electric heating wire (21) is connected to an external controller via a power line.

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