Coating adhesion testing device

Abstract

The application provides a coating adhesion test device, comprising: a fixing assembly for fixing a test sample, the surface of the test sample being coated with a coating; a knife assembly arranged above the fixing assembly and used for scratching the coating to form a preset pattern on the coating; and a first driving assembly connected with the knife assembly and used for driving the knife assembly to scratch the surface of the test sample to form the preset pattern. The coating adhesion test device is advantageous in forming different patterns on the coating, can be adapted to different coating adhesion test methods, and is advantageous in improving the application scene diversity of the coating adhesion test device.

Description

Technical Field

[0001] This application relates to the field of coating adhesion testing technology, and in particular to a coating adhesion testing device used in the coating adhesion testing process. Background Technology

[0002] With advancements in surface treatment technologies, innovations in coatings and coating materials, plasma treatment, nano-coatings, and functional surface modification, the requirements for the quality and stability of paint adhesion in products are gradually increasing. Paint adhesion testing is commonly referred to as adhesion testing or coating adhesion testing. It involves using manual methods or instruments to evaluate the strength of the adhesion between a coating (e.g., paint) and the substrate, verifying various functional performance indicators of the product to ensure it meets quality and usage expectations.

[0003] The above adhesion test (or coating adhesion test) can be conducted using various testing methods, such as the cross-cut test, the cross-cut test, the circle test, etc., and the samples to be tested may also have different shapes.

[0004] However, traditional testing instruments have limited functionality, making it difficult to apply to multiple testing methods and samples of different shapes. Utility Model Content

[0005] The first aspect of this application provides a coating adhesion testing device, comprising: A fixing component for fixing a test sample, the surface of which is coated with a coating; A blade assembly, disposed above the fixing assembly, is used to scribble the coating to form a preset pattern on the coating; and A first driving component, connected to the blade component, is used to drive the blade component to scratch the surface of the test sample to form the preset pattern.

[0006] The aforementioned coating adhesion testing device scratches the coating (e.g., paint) on the surface of the test sample using a blade assembly. After the test sample is fixed by a fixing assembly, the first driving assembly drives the coating adhesion testing device to scratch the surface of the test sample. The scratching path of the blade assembly can be changed in at least two directions, thereby forming a preset pattern on the coating. Therefore, the aforementioned coating adhesion testing device is advantageous for forming different patterns on the coating, can be adapted to different coating adhesion testing methods, and helps to improve the versatility of the application scenarios of the coating adhesion testing device.

[0007] In at least one embodiment of this application, the first driving component is used to drive the blade component to move in a first direction and a second direction, respectively, wherein the first direction and the second direction are perpendicular to each other.

[0008] In at least one embodiment of this application, the fixing component includes a first clamping part and a second clamping part, the relative position between the first clamping part and the second clamping part being variable, so as to cooperate in clamping and fixing the test sample.

[0009] In at least one embodiment of this application, a second driving component is further included, which is connected to the fixing component. The second driving component is used to drive the first clamping part and / or the second clamping part to move to change the distance between the first clamping part and the second clamping part.

[0010] In at least one embodiment of this application, the second drive assembly includes a motor and a lead screw connected to each other, the lead screw connecting the first clamping part and / or the second clamping part to drive the first clamping part and / or the second clamping part to scratch the surface of the test sample.

[0011] In at least one embodiment of this application, the first clamping portion and the second clamping portion are disposed opposite to each other, and a plurality of elastic units are formed on the opposite side of the first clamping portion and / or the second clamping portion. When the test sample is fixed by the fixing component, at least some of the multiple elastic elements are in direct contact with the surface of the test sample.

[0012] In at least one embodiment of this application, a plurality of first elastic units are formed on one side of the first clamping portion opposite to the second clamping portion; Each of the elastic units includes a top post embedded in the first clamping portion, the top post being elastically extendable and retractable in a direction perpendicular to the surface of the first clamping portion toward the second clamping portion.

[0013] In at least one embodiment of this application, the blade assembly includes a blade head, which can be detachably connected to the first drive assembly.

[0014] In at least one embodiment of this application, the blade assembly includes a counterweight connected to the blade head.

[0015] In at least one embodiment of this application, the coating adhesion testing device further includes a third driving component connected to the fixing component, the third driving component being used to drive the fixing component to rotate about an axis perpendicular to the scribing direction of the blade component. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the coating adhesion testing device according to an embodiment of this application.

[0017] Figure 2 for Figure 1 A partial three-dimensional structural diagram of the intermediate coating adhesion testing device.

[0018] Figure 3 for Figure 2 A three-dimensional structural diagram of the central fixed component, the second drive component, and the third drive component.

[0019] Figure 4 for Figure 2 A cross-sectional structural diagram of the first clamping component.

[0020] Figure 5 for Figure 1 A three-dimensional structural diagram of the central blade assembly, the first drive assembly, and the upper support component.

[0021] Figure 6 for Figure 1 A three-dimensional structural diagram of the central blade assembly and the first drive assembly.

[0022] Figure 7 for Figure 2 A three-dimensional structural diagram of the fixed component and the second drive component after rotating 90°.

[0023] Explanation of main component symbols Coating adhesion testing device: 1; Supporting components: 10; Upper support component: 11; Baffle: 111; Extension section: 112; Lower support component: 12; Fixed components: 20; First clamping part: 21; Surface: 211, 221; Second clamping part: 22; First elastic unit: 23; Positioning rod: 231; Spring: 232; Stress strain gauge: 233; Top column: 234; Second elastic unit: 24; Knife assembly: 30; Blade size: 31; Counterweight platform: 32; First drive component: 40; Bracket: 41; First track component: 42; First track: 421; Second track component: 43; Second track: 431; First motor: 44; First lead screw: 441; First drive unit: 442; Second motor: 45; Second lead screw: 451; Second drive unit: 452; Slider: 46; Second drive component: 50; Servo motor: 51; Lead screw: 52; Third drive component: 60; Rotary electric motor: 61; Shaft: 62; Turntable: 63; Surface: S1, S2; First direction: X; Second direction: Y; Sides: L1, L2, L3, L4, L5, L6.

[0024] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this application. Detailed Implementation

[0025] This application provides a coating adhesion testing device for scratching a coating (e.g., paint) on the surface of a test sample to form a preset pattern on the coating. The adhesion of the coating on the test sample can then be evaluated by processing and analyzing the preset pattern.

[0026] Please see Figure 1 The coating adhesion testing device 1 of this application embodiment includes a support component 10, a fixing component 20, a blade component 30, a first drive component 40, a second drive component 50, and a third drive component 60. The support component 10 is used to support, fix, and protect the fixing component 20, the blade component 30, the first drive component 40, and the second drive component 50. The first drive component 40 is connected to the blade component 30, and the second drive component 50 and the third drive component 60 are respectively connected to the fixing component 20.

[0027] The fixing component 20 is used to fix a test sample (not shown) with a coating on its surface. The blade component 30 is used to scratch the coating on the surface of the test sample. The second drive component 50 is used to drive at least some components of the fixing component 20 to translate, thereby fixing or releasing the test sample. The first drive component 40 is used to drive the blade component 30 to translate in the first direction X and the second direction Y respectively to scratch a preset pattern on the coating of the test sample. The third drive component 60 is used to drive the fixing component 20 to rotate, thereby changing the placement angle of the test sample.

[0028] Please refer to the following: Figure 1 and Figure 2The support assembly 10 includes an upper support member 11 and a lower support member 12 that are connected to each other. In this embodiment, the upper support member 11 includes a baffle 111 and an extension 112 that are connected to each other.

[0029] The baffle 111 is a semi-circular block structure, including two semi-circular sides L1 and L2 arranged opposite each other, and two straight sides L3 and L4 connecting the semi-circular sides L1 and L2. The semi-circular side L1 is connected to a surface S1 of the lower support member 12, and the two straight sides L3 and L4 are perpendicular to the surface S1, so that the upper support member 11 is sideways connected to the surface S1.

[0030] The extension 112 is a thin sheet structure. The baffle 111 has a surface S2 facing the blade assembly 30 and the first drive assembly 40, and the extension 112 extends from the surface S2 toward the blade assembly 30 and the first drive assembly 40.

[0031] Please see Figure 2 The first drive assembly 40 is fixed to the extension 112, and the blade assembly 30 is fixed to the first drive assembly 40. The upper support 11 can support the blade assembly 30 and the first drive assembly 40, so that the blade assembly 30 and the first drive assembly 40 can be suspended above the fixing assembly 20.

[0032] The fixing component 20, the blade assembly 30, the first drive assembly 40, and the second drive assembly 50 are located in the central region of surface S, and the baffle 111 partially surrounds the fixing component 20, the blade assembly 30, the first drive assembly 40, and the second drive assembly 50. During the operation of the blade assembly 30, the baffle 111 can isolate the working area, which helps to prevent the blade assembly 30 from accidentally injuring personnel.

[0033] In this embodiment, the lower support member 12 is a hollow rectangular frame. The third drive component 60 is partially located inside the lower support member 12 and partially located on the surface S1 of the lower support member 12.

[0034] Please refer to the following: Figure 2 and Figure 3 The fixing component 20 includes a first clamping part 21 and a second clamping part 22. The relative position between the first clamping part 21 and the second clamping part 22 is variable. In this embodiment, the first clamping part 21 and the second clamping part 22 are two parallel rectangular plate structures. By reducing the distance between the first clamping part 21 and the second clamping part 22, the first clamping part 21 and the second clamping part 22 can cooperate to clamp and fix the test sample between the first clamping part 21 and the second clamping part 22. By increasing the distance between the first clamping part 21 and the second clamping part 22, the test sample between the first clamping part 21 and the second clamping part 22 can be released.

[0035] The second drive assembly 50 is connected to the first clamping part 21 and the second clamping part 22 respectively. In this embodiment, the second drive assembly 50 includes a servo motor 51 and a lead screw 52. The servo motor 51 is located on the side of the first clamping part 21 opposite to the second clamping part 22. The lead screw 52 extends from the servo motor 51 and passes through the first clamping part 21 and the second clamping part 22 in sequence, and is threadedly connected to the first clamping part 21 and the second clamping part 22. In this embodiment, the second drive assembly 50 adjusts the distance between the first clamping part 21 and the second clamping part 22 by driving the first clamping part 21 to move in the extension direction of the lead screw 52. In this embodiment, by using the servo motor 51 connected to the lead screw 52 to drive the first clamping part 21 to move, since the lead screw 52 and the first clamping part 21 are threadedly connected, the force on each position of the first clamping part 21 is uniform during the displacement process, which is beneficial to maintaining the placement angle of the first clamping part 21 and avoiding tilting or offset.

[0036] In this embodiment, the fixing component 20 further includes a plurality of first elastic units 23 and a plurality of second elastic units 24. The plurality of first elastic units 23 are arrayed and connected to the first clamping portion 21. The plurality of second elastic units are arrayed and connected to the second clamping portion 22. Each first elastic unit 23 and each second elastic unit 24 can elastically extend and retract along the extension direction of the lead screw 52 when subjected to force. Each first elastic unit 23 is partially embedded in the first clamping portion 21. Each second elastic unit 24 is partially embedded in the second clamping portion 22. Each first elastic unit 23 and each second elastic unit 24 has a substantially identical structure. The structure of the first elastic unit 23 will be used as an example for the following description.

[0037] Please see Figure 4 Each first elastic unit 23 includes a positioning rod 231, a spring 232, a strain gauge 233, and a top post 234. The positioning rod 231 is perpendicular to the surface 211 of the first clamping portion 21 facing the second clamping portion 22 and is located in the space within the first clamping portion 21. The spring 232 revolves around the surface of the positioning rod 231 and can elastically expand and contract in a direction perpendicular to the surface 211 under force. The strain gauge 233 is located at the end of the positioning rod 231 away from the surface 211 and is located in the space within the first clamping portion 21, used to sense and feedback the magnitude of the force when the spring 232 is subjected to force. The top post 234 is located at the end of the positioning rod 231 near the surface 211, embedded in the surface 211, partially located in the space within the first clamping portion 21, and partially located outside the space formed by the first clamping portion 21.

[0038] When the test sample is placed between the first clamping part 21 and the second clamping part 22, the top posts of the first elastic unit 23 and the second elastic unit 24 directly contact the surface of the test sample. As the first clamping part 21 and the second clamping part 22 approach each other, the top posts contract according to the shape of the test sample surface. Therefore, by providing multiple first elastic units 23 and multiple second elastic units 24, it is beneficial to adapt to test samples with different surface morphologies and improve the fixation effect.

[0039] In other embodiments of this application, the fixing component 20 may fix the test sample not by clamping the first clamping part 21 and the second clamping part 22, but may also use methods such as gluing, snapping, or locking. In other embodiments of this application, the second driving component 50 may adjust the distance between the first clamping part 21 and the second clamping part 22 by driving the second clamping part 22 to move, or by simultaneously driving the first clamping part 21 and the second clamping part 22 to move. In other embodiments of this application, only one of the first clamping part 21 and the second clamping part 22 may be provided with an elastic unit. In other embodiments of this application, the second driving component 50 may include structures other than a servo motor to provide driving force.

[0040] Please see Figure 5 In this embodiment, the blade assembly 30 includes a blade head 31 and a counterweight 32 connected to each other. The blade head 31 and the counterweight 32 are respectively connected to the first drive assembly 40.

[0041] In this embodiment, the blade assembly 30 may include multiple blades 31 with different blade shapes. Figure 5 (Only the structure with one of the cutter heads 31 installed is shown in the diagram). During the operation of the cutter assembly 30, a matching cutter head 31 is detachably connected (e.g., screwed in) to the first drive assembly 40 according to a specific test method. When the test method changes, other cutter heads 31 are replaced for scratching. In this embodiment, the coating adhesion testing device 1 can be applied to various test methods such as cross-cut test, cross-cut test, and circular test.

[0042] The counterweight platform 32 is used to support the counterweight block to increase the counterweight of the blade assembly 30, so that when scratching the coating of the test sample, the stress is mainly concentrated on the blade assembly 30, so as to cut the coating better.

[0043] Please refer to the following: Figure 5 and Figure 6 In this embodiment, the first drive assembly 40 includes a bracket 41, two first track components 42, a second track component 43, a first motor 44, and a second motor 45. The first track components 42, the second track components 43, the first motor 44, and the second motor 45 are respectively fixed on the bracket 41.

[0044] In this embodiment, the bracket 41 includes a main bracket 411 and a support beam 412. The main bracket 411 is generally rectangular and has two opposite sides L5 and two opposite sides L6.

[0045] Two first track members 42 are respectively fixedly connected to the two sides L5 of the main support 411, and each first track member 42 forms a first track 421 extending along the first direction X. Support beams 412 are respectively mounted on the two sides L6 of the main support 411 and fixedly connected to the two sides L6 of the main support 411. A second track member 43 is fixedly connected to the support beam 412 and forms a second track 431 extending along the second direction Y. The first direction X is perpendicular to the second direction Y.

[0046] In this embodiment, the first drive assembly 40 further includes a slider 46. The cutter head 31 is detachably connected to the slider 46. The slider 46 is slidably connected in the second track 431.

[0047] Please refer to the following: Figure 5 and Figure 6 The first motor 44 is a lead screw motor, including a first lead screw 441 and a first drive unit 442. The first lead screw 441 is connected at both ends to a support beam 412, and its surface has external threads (not shown). The first drive unit 442 is sleeved on the first lead screw 441, and its housing can be fixed to the second track member 43 via a mechanism (the mechanism includes, for example, a connecting block / connecting post, whose two ends are fixed to the housing of the first drive unit 442 and the second track member 43 by means of locking screws, adhesive, grooves and protrusions, etc.). When the first motor 44 is working, the first drive unit 442 can translate along the extension direction of the first lead screw 441 on the first lead screw 441, thereby driving the second track member 43 to translate synchronously. The second track member 43 is connected to a blade assembly 30; therefore, the first motor 44 drives the second track member 43 as a whole to drive the blade assembly 30 to translate along the first track 421 (i.e., in the first direction X).

[0048] The second motor 45 is also a lead screw motor, including a second lead screw 451 and a second drive unit 452. The two ends of the second lead screw 451 are connected to the second track member 43, and its surface has external threads (not shown). The second drive unit 452 is sleeved on the second lead screw 451, and the housing of the second drive unit 452 can be fixed to the slider 46 by a mechanism (the mechanism includes, for example, a connecting block / connecting post, the two ends of which are fixed to the housing of the second drive unit 452 and the slider 46 by locking screws, adhesive, grooves and protrusions, etc.). When the second motor 45 is working, the second drive unit 452 can translate along the extension direction of the second lead screw 451 on the second lead screw 451, thereby causing the slider 46 to move synchronously with the second drive unit 452. Since the slider 46 is fixedly connected to the blade assembly 30, the second motor 45 is used to drive the slider 46 to synchronously drive the blade assembly 30 to translate along the second track 431 (i.e., in the second direction Y).

[0049] A scribing plane is defined by the first direction X and the second direction Y. By controlling the translation of the blade assembly 30 within the scribing plane through the first motor 44 and the second motor 45, the blade head 31 can be controlled to scribble on the surface of the test sample, so as to scribble along a predetermined trajectory on the coating of the test sample.

[0050] Please see Figure 7 In this embodiment, the third drive assembly 60 includes a rotary motor 61, a rotating shaft 62, and a turntable 63. The rotating shaft 62 is connected to the rotary motor 61 and the turntable 63 at both ends. In this embodiment, the turntable 63 is a circular disk. The turntable 63 is located on the surface S of the lower support member 12, and the rotary motor 61 is located within the hollow space formed by the lower support member 12. The rotating shaft 62 passes through the surface S of the lower support member 12 and connects to the turntable.

[0051] In this embodiment, the fixing component 20 and the second drive component 50 are fixedly connected to the surface of the turntable 63 away from the lower support 12. Through the rotary motor 61 and the rotating shaft 62, the turntable 63 can be driven to rotate synchronously around the axial direction of the rotating shaft 62 (perpendicular to the first direction X and the second direction Y), or synchronously within the scribing plane. By controlling the rotation of the fixing component 20, the test sample clamped within the fixing component 20 can be controlled to rotate synchronously, changing the placement angle of the test sample, thereby changing the trajectory of the cutter head 31 when scribing the coating of the test sample.

[0052] In the coating adhesion testing device 1 of this application embodiment, the first drive component 40, the second drive component 50, and the third drive component 60 can be connected to an external control device (such as a control panel, smart terminal, etc.) via wired or wireless means, thereby realizing the control of the first drive component 40, the second drive component 50, and the third drive component 60 (e.g., controlling the displacement in the first direction, the second direction, the rotation angle in the third direction, etc.). The aforementioned control device can control the first drive component 40, the second drive component 50, and the third drive component 60 using a preset program, or it can receive user input commands in real time to control the first drive component 40, the second drive component 50, and the third drive component 60.

[0053] In the coating adhesion testing device 1 of this application embodiment, stress plates (not shown) can be provided in the first clamping part 21 and the second clamping part 22 corresponding to each elastic unit (including the first elastic unit 23 and the second elastic unit 24) to provide real-time feedback on the stress received by the elastic unit, so as to control the displacement of the first clamping part 21 according to the stress. The blade assembly 30 can be provided with stress plates (not shown) corresponding to the blade head 31 to provide real-time feedback on the stress received by the blade head and stop the scratching action in time.

[0054] In other embodiments of this application, the coating adhesion testing device 1 itself may include a control component (e.g., control panel, control chip, etc.) that is respectively connected to the first drive component 40, the second drive component 50 and the third drive component 60, to realize the control of the first drive component 40, the second drive component 50 and the third drive component 60.

[0055] Please refer to the following: Figure 2 The working process of the coating adhesion testing device 1 in this embodiment is described below: First, the test sample is placed between the first clamping part 21 and the second clamping part 22 at a suitable angle, so that the coating to be scratched is facing the blade assembly 30.

[0056] The first clamping part 21 is driven to move toward the second clamping part 22 by the second driving component 50. The first elastic unit 23 and / or the second elastic unit 24 gradually contract to clamp the test sample. The second driving component 50 stops driving after driving the first clamping part 21 to move by a corresponding displacement according to the stress on each elastic unit 23 / 24.

[0057] The first driving component 40 drives the cutting tool assembly 30 to move along the first direction X / second direction Y, causing the cutting head 31 to move along the first direction X / second direction Y. The displacement trajectory of the cutting head 31 is consistent with the pattern formed on the coating of the test sample. During the displacement of the cutting head 31, the fixing component 20 remains stationary.

[0058] After the cutter head 31 has finished its displacement, the third drive assembly 60 drives the fixed assembly 20 to rotate within the scribing plane (e.g., Figure 7 The image shows the state of the fixed component 20 after rotating 90° to the left in the scribed plane, changing the placement angle of the test sample.

[0059] After the placement angle of the test sample is changed, the first drive component 40 drives the cutter component 30 to drive the cutter head 31 to move again, scratching the coating of the test sample in another direction.

[0060] Depending on the different testing methods used on the test samples, different patterns need to be etched onto the coating. The coating adhesion testing device 1 of this application uses the first driving component 40 and the third driving component 50 to drive the cutter head 31 to translate and the fixing component 20 to rotate, respectively, so that the cutter head 31 can etch different patterns onto the coating. The translation of the cutter head 31 and the rotation of the fixing component 20 are repeatedly driven by the first driving component 40 and the third driving component 50 until a preset pattern is formed on the coating, at which point the process stops.

[0061] The second drive assembly 50 drives the first clamping part 21 to gradually move away from the second clamping part 22. The distance between the first clamping part 21 and the second clamping part 22 gradually increases, and the first elastic unit 23 and the second elastic unit 24 elastically return to their initial state, causing the fixing assembly 20 to release the test sample.

[0062] The test sample with the preset pattern is removed, and the adhesion of the coating on the test sample is evaluated by subsequent steps such as applying tape, peeling off tape, and observing the degree and area of ​​coating peeling.

[0063] The coating adhesion testing devices 1 described above in this application scratch the coating on the surface of the test sample by the blade assembly 30. After the test sample is fixed by the fixing assembly 20, the blade assembly 30 is driven to move in the first direction X and the second direction Y by the first driving assembly 40. The scratching path of the blade assembly 30 when scratching the coating can be changed in the first direction X and the second direction Y, thereby forming a preset pattern on the coating.

[0064] The aforementioned coating adhesion testing device 1 may further include a third driving component 60, which drives the fixing component 20 to rotate, thereby switching the placement angle of the test sample. By setting the displacement in the first direction X and the second direction Y and setting the angle of the rotating fixing component 20, combined with the detachable cutting head 31, it is beneficial to form various different scratch patterns on the coating, adapting to the scratch pattern requirements of different coating adhesion testing methods, and improving the versatility of the application scenarios of the coating adhesion testing device 1.

[0065] The coating adhesion testing device 1 described above, by setting elastic units in the first clamping part 21 and the second clamping part 22, controls the elastic extension and contraction of the elastic units, which can adapt to clamping test samples with different surface shapes, further enhancing the diversity of application scenarios of the coating adhesion testing device 1.

[0066] The aforementioned coating adhesion testing device 1 is simple to operate, easy to learn, and produces low noise, making it suitable for use in laboratories, production lines, office buildings, and other similar environments. This device mechanizes the scratching process on the test samples, reducing manual operation and resulting in smaller testing errors and better measurement consistency. Using aluminum and galvanized steel as the main materials, the device is suitable for various applications, is resistant to deformation and corrosion, offers high measurement accuracy, and ensures smooth testing.

[0067] Those skilled in the art should recognize that the above embodiments are only used to illustrate this application and are not intended to limit this application. Any appropriate changes and variations made to the above embodiments within the essential spirit and scope of this application fall within the scope of protection claimed by this application.

Claims

1. A coating adhesion testing device, characterized in that, include: A fixing component for fixing a test sample, the surface of which is coated with a coating; A blade assembly, disposed above the fixing assembly, is used to scribble the coating to form a preset pattern on the coating; as well as A first driving component, connected to the blade component, is used to drive the blade component to scratch the surface of the test sample to form the preset pattern.

2. The coating adhesion testing device as described in claim 1, characterized in that, The first driving component is used to drive the blade assembly to move in a first direction and a second direction, respectively, wherein the first direction and the second direction are perpendicular to each other.

3. The coating adhesion testing device as described in claim 1, characterized in that, The fixing component includes a first clamping part and a second clamping part, the relative position between the first clamping part and the second clamping part is variable, so as to clamp and fix the test sample.

4. The coating adhesion testing device as described in claim 3, characterized in that, It also includes a second drive component connected to the fixing component, the second drive component being used to drive the first clamping part and / or the second clamping part to move to change the distance between the first clamping part and the second clamping part.

5. The coating adhesion testing device as described in claim 4, characterized in that, The second drive assembly includes a motor and a lead screw connected to each other, the lead screw connecting the first clamping part and / or the second clamping part to drive the first clamping part and / or the second clamping part to translate within the scribing plane.

6. The coating adhesion testing device as described in claim 3, characterized in that, The first clamping part and the second clamping part are disposed opposite to each other, and a plurality of elastic units are formed on the opposite side of the first clamping part and / or the second clamping part respectively; When the test sample is fixed by the fixing component, at least some of the multiple elastic elements are in direct contact with the surface of the test sample.

7. The coating adhesion testing device as described in claim 6, characterized in that, A plurality of first elastic units are formed on one side of the first clamping part opposite to the second clamping part; Each of the elastic units includes a top post embedded in the first clamping portion, the top post being elastically extendable and retractable in a direction perpendicular to the surface of the first clamping portion toward the second clamping portion.

8. The coating adhesion testing device as described in claim 1, characterized in that, The blade assembly includes a blade head, which can be detachably connected to the first drive assembly.

9. The coating adhesion testing device as described in claim 8, characterized in that, The blade assembly includes a counterweight platform connected to the blade head.

10. The coating adhesion testing device as described in claim 1, characterized in that, It also includes a third drive assembly connected to the fixing assembly, the third drive assembly being used to drive the fixing assembly to rotate about an axis perpendicular to the scribing direction of the blade assembly.

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