A method for automatically implementing a multi-point adhesion grid

Abstract

The application discloses a kind of methods for automatically realizing multi-point adhesion force grid, comprising the following steps, step one parameter setting and initialization, step two sample fixation, step three executes first direction grid, step four rotates platform and calculates second direction coordinate, step five executes second direction grid, step six multi-point cycle judgment, a kind of methods for automatically realizing multi-point adhesion force grid of the application, by automation control and intelligent path planning, can carry out continuous, automatic grid test to multiple preset regions, without manual movement and intervention, compared with traditional manual single-point test, efficiency can be improved 5-10 times, especially suitable for multi-batch detection scene in batch production.

Description

Technical Field

[0001] This invention relates to the field of coating adhesion testing technology, and in particular to a method for automatically performing multi-point adhesion testing. Background Technology

[0002] Coating adhesion testing is a crucial test for evaluating the bond strength between a coating and its substrate, and it is widely used in industries such as automotive, aerospace, construction, and coatings. Currently, the cross-cut adhesion test (100-cross test) is the standard method for adhesion testing widely adopted in the industry.

[0003] In existing technologies, cross-cut adhesion testing mainly relies on manual tools (such as a cross-cut knife). The process involves the tester holding the cross-cut knife and manually making parallel cuts perpendicular to each other on the coating surface to form a grid. The peeling of the coating within the grid is then evaluated visually or with a magnifying glass to determine the adhesion level.

[0004] However, this traditional manual testing method has the following significant drawbacks: Low efficiency: Manual operation can only complete the gridding of one area (usually 1-2 test points) at a time, which cannot efficiently cope with scenarios that require multi-area and multi-point inspection, such as car body and large structural parts, resulting in a long overall testing cycle.

[0005] Poor repeatability and consistency of test results: The force, angle, speed and spacing of manual scribing are difficult to control precisely and vary from person to person, resulting in large differences in the test results of the same sample between different testers or different test batches, which can easily lead to misjudgment of the adhesion level (such as the 0-5 standard).

[0006] There are safety hazards and the substrate may be damaged: Operators holding sharp scribing tools are at risk of being cut. At the same time, uneven manual application of force may result in insufficient scribing depth (affecting the judgment) or excessive scribing depth, which may damage the substrate and affect the validity of the test.

[0007] Lack of standardization and traceability: The process parameters of manual testing cannot be accurately recorded and reproduced, making it difficult to meet the intelligent management requirements of modern manufacturing for the testing process to be "high-precision, high-efficiency, and traceable".

[0008] To address the aforementioned issues, while some electric or semi-automatic cross-cut adhesion testing devices have emerged in the existing technology, most still cannot achieve multi-point automatic and precise positioning, closed-loop adaptive control of cross-cut parameters, or automatic continuous operation between multiple test areas. Therefore, there is an urgent need for a fully automatic, multi-point, high-precision, and parameter-controllable adhesion cross-cut testing method. Summary of the Invention

[0009] In order to overcome the shortcomings of the prior art, one of the objectives of the present invention is to provide a method for automatically achieving multi-point adhesion gridding.

[0010] One of the objectives of this invention is achieved through the following technical solution: A method for automatically achieving multi-point adhesion gridding includes the following steps: Step 1: Parameter setting and initialization. Users set test parameters through the control interface: grid length, grid speed, grid spacing, grid pressure, number of horizontal and vertical grids, and XY axis coordinates of the grid area. Step 2: Sample fixation. The clamping mechanism at the bottom of the machine uses the torque control of the motor to output a constant torque to fix the coating sample to be tested on the test platform, ensuring that the coating surface is flat and in uniform contact with the cutting tool. Step 3: Perform the first direction gridding. When the rotation angle r of the test platform is 0 degrees, use the XY coordinates input by the user to make the horizontal number of parallel cuts perpendicular to the coating surface. Step 4: Rotate the platform and calculate the second direction coordinates. Control the test platform to rotate 90 degrees. Based on the rotation center coordinates and the coordinates of the first grid area described in Step 3, automatically calculate the second direction grid coordinates of the grid area after rotation using the coordinate rotation algorithm. Step 5: Perform the second-direction gridding. Based on the calculated second-direction gridding coordinates, control the gridding tool to make a number of parallel cuts in the same gridding area along the second direction perpendicular to the first direction to form a grid. Step Six: Perform a multi-point loop check to determine if there are any other grid areas that have not yet been tested. If so, repeat steps three through five until all preset grid areas have completed the grid test.

[0011] Furthermore, the vertical number in step one is the number of grid lines. The grid pressure mentioned in step one is precisely controlled and fed back in real time through a pressure module to ensure the consistency of grid depth.

[0012] Furthermore, the clamping mechanism described in step two uses a motor to output a constant torque to fix the sample, ensuring that the sample remains flat and stable during the test.

[0013] Furthermore, the testing order for multiple grid areas in step six is ​​as follows: first test the grid points located in the center area of ​​the test platform, then test the grid points in the left area, and finally test the grid points in the right area. The distance between any two grid areas shall not be less than 5 mm.

[0014] Furthermore, the method also includes step seven: after the test is completed, automatically save the test parameters, pressure data during the grid crossing process, and the final grid crossing result image to form a traceable test report.

[0015] Furthermore, the automatic coordinate calculation method includes the following steps: Step 1: Calculate the initial relative vector. Assume the XY coordinates of the test platform are (X0, Y0) when the rotation angle r = 0 degrees, and (X1, Y1) after rotating 90 degrees clockwise. The coordinates of the rotation center are (0, Y0). X O Y The vector of the grid point relative to the rotation center O: =(X0-O X Y0-O Y ) Step 2: Generate the compensation vector. Rotating the test platform 90 degrees clockwise will rotate the vector 90 degrees clockwise. Rotating 90 degrees counterclockwise cancels out displacement. The vector rule for rotating 90 degrees counterclockwise is: (d) x d y → (−d) y d x ), =(-|Y0-O Y |,X0-O X ); Step 3: Calculate the adjusted XY coordinates. The adjusted XY is the rotation center O plus the compensation vector: X1 = O X + Y1=O Y + The general formula is for any initial X Y (X0, Y0), the adjusted XY is: X1=0 X -(Y0−O) Y ), Y1=O Y +(X0−O X ); Step 4: Finally, complete the set number of grid lines for both horizontal 0-degree grid lines and vertical 90-degree grid lines. This represents the completion of the current grid point. Determine if there are any other grid points. If there are, use the coordinates of the new grid point to perform horizontal and then vertical grid lines first.

[0016] Furthermore, the feature is that the grid points located in the central area of ​​the test platform are tested first, then the grid points in the left area are tested, and finally the grid points in the right area are tested.

[0017] Furthermore, the key feature is that the core premise of the automatic coordinate calculation method in step four is to clearly define the rotation center, which refers to the center point of the test platform. No matter how the test platform rotates, the center point of rotation remains unchanged.

[0018] An automated multi-point adhesion grid system for implementing the method as described in any one of claims 1 to 8, comprising: The testing platform is used to hold the samples to be tested; A clamping module is used to fix the sample to be tested; A rotating module, connected to the test platform, is used to drive the test platform to rotate; An automatic crisscross module, including crisscross cutters, is used to perform crisscrossing operations on a sample surface; A pressure module is used to monitor and adjust the pressure applied to the sample surface by the scribing tool in real time. The data processing unit is used to execute the coordinate rotation algorithm and control the coordinated operation of the above modules.

[0019] Furthermore, the data processing unit is also used to automatically record all test parameters, pressure data, and cross-cutting result images, and generate a traceable test report.

[0020] Compared with the prior art, the beneficial effects of the present invention are: 1. The present invention provides a method for automatically performing multi-point adhesion crisscross testing. Through automated control and intelligent path planning, it can perform continuous and automatic crisscross testing on multiple preset areas without the need for manual movement and intervention. Compared with traditional manual single-point testing, the efficiency can be improved by 5-10 times, and it is especially suitable for multi-batch testing scenarios in mass production.

[0021] 2. The present invention provides an automatic method for multi-point adhesion grading, which enables precise control of key parameters such as grading force, speed, and spacing. Through an automatic coordinate rotation compensation algorithm, it ensures the accurate correspondence of grading positions before and after rotation, thereby eliminating errors caused by human operation. The repeatability error of the test results can be reduced to within ±5%, ensuring that the test results meet industry standards.

[0022] 3. The present invention provides an automatic method for multi-point adhesion grading, which uses a mechanical execution system to replace manual use of sharp tools, completely eliminating the risk of operators being scratched. At the same time, the entire process from positioning and grading to evaluation is fixed in a preset program, avoiding non-standard human operation and ensuring that the testing process strictly meets the requirements of the quality system.

[0023] 4. The present invention provides an automatic method for multi-point adhesion criterion crossing, which can automatically record and save all test parameters, pressure data and result images, and generate a complete test report. This provides data support for quality analysis and process improvement, and solves the problem of traceability that is impossible with traditional methods.

[0024] 5. The present invention provides an automatic method for achieving multi-point adhesion cross-cutting. By precisely controlling the cross-cutting pressure, the present invention avoids excessively deep scratches or damage to the substrate surface caused by uneven manual force application, thereby improving the reliability of the test. Attached Figure Description

[0025] Figure 1 This is a flowchart of the present invention; Figure 2 This is the data processing and stop determination sub-process of the present invention. Detailed Implementation

[0026] 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.

[0027] Example 1 A method for automatically achieving multi-point adhesion gridding includes the following steps: Step 1: Parameter setting and initialization. The user sets the test parameters through the control interface: grid length, grid speed, grid spacing, grid pressure, number of horizontal and vertical grids, and XY coordinates of the grid area. The number of vertical grids is the number of grids. The grid pressure mentioned in Step 1 is precisely controlled and fed back in real time through the pressure module to ensure the consistency of grid depth. Step 2: Sample fixation. The clamping mechanism at the bottom of the machine uses the torque control of the motor to output a constant torque to fix the coating sample to be tested on the test platform, ensuring that the coating surface is flat and in uniform contact with the cutting tool. The clamping mechanism uses the constant torque output by the motor to fix the sample, ensuring that the sample remains flat and stable during the test.

[0028] Step 3: Perform the first direction gridding. When the rotation angle r of the test platform is 0 degrees, use the XY coordinates input by the user to make the horizontal number of parallel cuts perpendicular to the coating surface. Step 4: Rotate the platform and calculate the second direction coordinates. Control the test platform to rotate 90 degrees. Based on the rotation center coordinates and the coordinates of the first grid area described in Step 3, automatically calculate the second direction grid coordinates of the grid area after rotation using the coordinate rotation algorithm. Step 5: Perform the second-direction gridding. Based on the calculated second-direction gridding coordinates, control the gridding tool to make a number of parallel cuts in the same gridding area along the second direction perpendicular to the first direction to form a grid. Step 6: Multi-point loop judgment to determine if there are any other grid areas that have not been tested. If so, repeat steps 3 to 5 until all preset grid areas have completed the grid test. The testing order of multiple grid areas is as follows: first test the grid point located in the center area of ​​the test platform, then test the grid point in the left area, and finally test the grid point in the right area. The distance between any two grid areas shall not be less than 5 mm. Step 7: After the test is completed, the test parameters, pressure data during the grid crossing process, and the final grid crossing result image are automatically saved to form a traceable test report.

[0029] The method for automatic coordinate calculation includes the following steps: Step 1: Calculate the initial relative vector. Assume the XY coordinates of the test platform are (X0, Y0) when the rotation angle r = 0 degrees, and (X1, Y1) after rotating 90 degrees clockwise. The coordinates of the rotation center are (0, Y0). X O Y The vector of the grid point relative to the rotation center O: =(X0-O X Y0-O Y ) Step 2: Generate the compensation vector. Rotating the test platform 90 degrees clockwise will rotate the vector 90 degrees clockwise. Rotating 90 degrees counterclockwise cancels out displacement. The vector rule for rotating 90 degrees counterclockwise is: (d) x d y → (−d) y d x ), =(-|Y0-O Y |,X0-O X ); Step 3: Calculate the adjusted XY coordinates. The adjusted XY is the rotation center O plus the compensation vector: X1 = O X + Y1=O Y + The general formula is for any initial X Y (X0, Y0), the adjusted XY is: X1=0 X -(Y0−O) Y ), Y1=O Y +(X0−O X ); Step 4: Finally, complete the set number of horizontal 0-degree grid lines and vertical 90-degree grid lines respectively. This represents the completion of the current grid point. Determine if there are any other grid points. If there are, use the coordinates of the new grid point to perform horizontal and then vertical grid lines first. Test the grid points located in the center area of ​​the test platform first, then test the grid points in the left area, and finally test the grid points in the right area. The core premise of the automatic coordinate calculation method in Step 4 is to define the rotation center. The rotation center refers to the center point of the test platform. No matter how the test platform rotates, the rotation center point remains unchanged.

[0030] An automated multi-point adhesion cross-cutting system for implementing a multi-point adhesion cross-cutting method includes: The testing platform is used to hold the samples to be tested; A clamping module is used to fix the sample to be tested; A rotating module, connected to the test platform, is used to drive the test platform to rotate; An automatic crisscross module, including crisscross cutters, is used to perform crisscrossing operations on a sample surface; A pressure module is used to monitor and adjust the pressure applied to the sample surface by the scribing tool in real time. The data processing unit is used to execute the coordinate rotation algorithm and control the coordinated operation of the above modules. The data processing unit is also used to automatically record all test parameters, pressure data and grid result images, and generate a traceable test report.

[0031] Example 2 Step 1: System Preparation and Parameter Initialization Place the coating sample to be tested stably on the test platform. Turn on the system power and run the control software. The main interface of the software displays the parameter setting area. The user sets the following parameters: grid length, grid speed, grid spacing, grid pressure, number of horizontal and vertical grids (number of grids), and XY coordinates of the grid area. Stroke length: Enter 30mm Stroke speed: Input 40mm / s Stroke spacing: 2mm Stretch pressure: 2kg Number of horizontal lines: 10 Number of vertical grids: 10 XY coordinates of the gridded area: left coordinates (14, 52), middle coordinates (51, 52), right coordinates (87, 52). Click the "Start Test" button to complete system initialization.

[0032] Step 2: Template clamping and pressure module positioning The mechanical clamping mechanism operates automatically, reliably pressing the template onto the platform to ensure no loosening during the marking process. The pressure motor moves to the set pressure value. Step 3: Calculate the vertical grid coordinates for the left, center, and right sides respectively and store them in the data processing unit. Begin horizontal gridding for the center coordinate, then rotate 90 degrees to begin vertical gridding; after completing the center coordinate gridding, rotate to 0 degrees to begin horizontal gridding for the left coordinate, then rotate 90 degrees to begin vertical gridding; after completing the left coordinate gridding, rotate to 0 degrees to begin horizontal gridding for the right coordinate, then rotate 90 degrees to begin vertical gridding.

[0033] Step 4: Intelligent Stop Judgment. The device will automatically reset after all areas have been divided into grids.

[0034] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0036] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0037] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0038] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0039] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A method for automatically achieving multi-point adhesion gridding, characterized in that, Includes the following steps: Step 1: Parameter setting and initialization. Users set test parameters through the control interface: grid length, grid speed, grid spacing, grid pressure, number of horizontal and vertical grids, and XY axis coordinates of the grid area. Step 2: Sample fixation. The clamping mechanism at the bottom of the machine uses the torque control of the motor to output a constant torque to fix the coating sample to be tested on the test platform, ensuring that the coating surface is flat and in uniform contact with the cutting tool. Step 3: Perform the first direction gridding. When the rotation angle r of the test platform is 0 degrees, use the XY coordinates input by the user to make the horizontal number of parallel cuts perpendicular to the coating surface. Step 4: Rotate the platform and calculate the second direction coordinates. Control the test platform to rotate 90 degrees. Based on the rotation center coordinates and the coordinates of the first grid area described in Step 3, automatically calculate the second direction grid coordinates of the grid area after rotation using the coordinate rotation algorithm. Step 5: Perform the second-direction gridding. Based on the calculated second-direction gridding coordinates, control the gridding tool to make a number of parallel cuts in the same gridding area along the second direction perpendicular to the first direction to form a grid. Step Six: Perform a multi-point loop check to determine if there are any other grid areas that have not yet been tested. If so, repeat steps three through five until all preset grid areas have completed the grid test.

2. The method for automatically achieving multi-point adhesion gridding as described in claim 1, characterized in that, The vertical number in step one is the number of grid lines. The grid pressure mentioned in step one is precisely controlled and fed back in real time through a pressure module to ensure the consistency of grid depth.

3. The method for automatically achieving multi-point adhesion gridding as described in claim 1, characterized in that, The clamping mechanism described in step two uses a motor to output a constant torque to fix the sample, ensuring that the sample remains flat and stable during the test.

4. The method for automatically achieving multi-point adhesion gridding as described in claim 1, characterized in that, In step six, the testing order for multiple grid areas is as follows: first test the grid points located in the center area of ​​the test platform, then test the grid points in the left area, and finally test the grid points in the right area. The distance between any two grid areas shall not be less than 5 mm.

5. The method for automatically achieving multi-point adhesion gridding as described in claim 1, characterized in that, The method also includes step seven: after the test is completed, the test parameters, pressure data during the grid crossing process and the final grid crossing result image are automatically saved to form a traceable test report.

6. The method for automatically achieving multi-point adhesion gridding as described in claim 1, characterized in that, The automatic coordinate calculation method includes the following steps: Step 1: Calculate the initial relative vector. Assume the XY coordinates of the test platform are (X0, Y0) when the rotation angle r = 0 degrees, and (X1, Y1) after rotating 90 degrees clockwise. The coordinates of the rotation center are (0, Y0). X O Y The vector of the grid point relative to the rotation center O: =(X0-O X Y0-O Y ) Step 2: Generate the compensation vector. Rotating the test platform 90 degrees clockwise will rotate the vector 90 degrees clockwise. Rotating 90 degrees counterclockwise cancels out displacement. The vector rule for rotating 90 degrees counterclockwise is: (d) x d y → (−d) y d x ), =(-|Y0-O Y |,X0-O X ); Step 3: Calculate the adjusted XY coordinates. The adjusted XY is the rotation center O plus the compensation vector: X1 = O X + Y1=O Y + The general formula is for any initial X Y (X0, Y0), the adjusted XY is: X1=0 X -(Y0−O) Y ), Y1=O Y +(X0−O X ); Step 4: Finally, complete the set number of grid lines for both horizontal 0-degree grid lines and vertical 90-degree grid lines. This represents the completion of the current grid point. Determine if there are any other grid points. If there are, use the coordinates of the new grid point to perform horizontal grid lines first, and then vertical grid lines.

7. The method for automatically achieving multi-point adhesion gridding as described in claim 6, characterized in that, First test the grid points located in the center of the test platform, then test the grid points in the left area, and finally test the grid points in the right area.

8. The method for automatically achieving multi-point adhesion gridding as described in claim 1, characterized in that, The core premise of the automatic coordinate calculation method in step four is to define the rotation center. The rotation center refers to the center point of the test platform. No matter how the test platform rotates, the rotation center point remains unchanged.

9. An automatic multi-point adhesion grid system for implementing the method as described in any one of claims 1 to 8, characterized in that, include: The testing platform is used to hold the samples to be tested; A clamping module is used to fix the sample to be tested; A rotating module, connected to the test platform, is used to drive the test platform to rotate; An automatic crisscross module, including crisscross cutters, is used to perform crisscrossing operations on a sample surface; A pressure module is used to monitor and adjust the pressure applied to the sample surface by the scribing tool in real time. The data processing unit is used to execute the coordinate rotation algorithm and control the coordinated operation of the above modules.

10. The system as described in claim 9, characterized in that, The data processing unit is also used to automatically record all test parameters, pressure data, and grid result images, and generate traceable test reports.

Images