Calibrating device for coating binding force tester

Abstract

The utility model belongs to the technical field of analysis and detection equipment calibration, and particularly relates to a coating binding force tester calibration device which comprises a top plate, a pull rod, a plurality of stand columns with the same height, a standard dynamometer and a bottom plate. A top plate through hole is formed in the center of the top plate; a bottom plate threaded hole is formed in the center of the bottom plate, and a plurality of bottom plate stand column mounting holes are evenly formed in the periphery of the bottom plate. The top plate and the bottom plate are fixedly connected through stand columns. A coating binding force tester spindle is arranged at the top end of the pull rod and penetrates through the top plate through hole to be fixedly connected with a coating binding force tester. The bottom end thread of the pull rod is fixedly connected with the standard dynamometer through thread fit; and the bottom end of the standard dynamometer is fixedly connected with the bottom plate through threads. The calibration device for the coating binding force tester is small in size and easy to carry, and corresponding standard dynamometers can be matched for field calibration according to coating binding force testers with different measuring ranges.

Description

Technical Field

[0001] The utility model belongs to the technical field of calibration of analytical testing equipment, and particularly relates to a calibration device for a coating bonding strength tester. Background Art

[0002] The coating adhesion tester is a test instrument in the automotive industry, used to test the adhesion between the coating and the substrate. There are three main methods in the existing technology: the circle method, the grid method, and the pull-off method. The circle method and the grid method can only grade and divide the adhesion, but cannot be quantified; while the pull-off method can quantitatively describe the specific size of the adhesion (in MPa), which is effective for comparing the adhesion of different coatings and is very suitable for R&D personnel to use when developing formulas.

[0003] The test principle of the pull-off adhesion tester used in the prior art is: the test sample or system is applied to a flat plate with a uniform thickness on a surface structure; after the coating system is dried / cured, the test column is directly bonded to the surface of the coating with a special adhesive; after the adhesive is cured, the bonded test assembly is placed on the BGD500 tester, and the tester uses a hydraulic pump to pull the test column off the coating uniformly at a speed not exceeding 1MPa / s. The required force is directly displayed on the LCD screen of the instrument, thereby testing the force required to destroy the adhesion between the coating / substrate.

[0004] In the prior art, the pull-off method coating adhesion tester is mostly calibrated by the testing machine method, that is, the tester is connected to a universal testing machine for calibration. When the coating adhesion tester is calibrated by the prior art means, the tester needs to be brought back to the calibration laboratory, and on-site calibration cannot be achieved.

[0005] Therefore, there is an urgent need for a coating adhesion tester calibration device to achieve on-site calibration of the coating adhesion tester, shorten the calibration cycle, and no longer affect customer use. Utility Model Content

[0006] The utility model aims to provide a coating adhesion tester calibration device, characterized in that the calibration device comprises: a top plate, a pull rod, a plurality of equal-height columns, a standard force gauge and a bottom plate; a top plate through hole is provided at the center of the top plate, and a plurality of top plate column mounting holes are evenly arranged on the periphery of the top plate; a bottom plate threaded hole is provided at the center of the bottom plate, and a plurality of bottom plate column mounting holes are evenly arranged on the periphery of the bottom plate; the top end of each column is vertically fixedly connected to the top plate through the top plate column mounting hole, and the bottom end of each column is vertically fixedly connected to the bottom plate through the bottom plate column mounting hole; the top plate and the bottom plate have the same size and corresponding hole positions;

[0007] The top and bottom ends of the standard dynamometer are respectively provided with a top threaded hole of the standard dynamometer and a bottom threaded hole of the standard dynamometer; the top end of the pull rod is provided with a spindle of the coating adhesion tester, and the spindle of the coating adhesion tester passes through the through hole of the top plate and is fixedly connected with the coating adhesion tester; the bottom end of the pull rod is provided with a pull rod bottom thread, and the pull rod bottom thread is fixedly connected with the top threaded hole of the standard dynamometer through thread matching; the bottom threaded hole of the standard dynamometer is fixedly connected with the threaded hole of the bottom plate through thread matching; the axes of the pull rod, the through hole of the top plate, the standard dynamometer and the threaded hole of the bottom plate are collinear in the vertical direction.

[0008] The top end of each column is detachably connected to the top plate in a vertical fixed manner through a top plate column mounting hole, and the bottom end of each column is detachably connected to the bottom plate in a vertical fixed manner through a bottom plate column mounting hole.

[0009] A transition plate is provided between the standard dynamometer and the base plate, a transition plate stepped hole is provided at the center of the transition plate, and the bottom of the standard dynamometer is fixedly connected to the transition plate through the transition plate stepped hole; four transition plate internal threaded through holes are provided on the surface of the transition plate with the center point of the transition plate stepped hole as the center of the circle and at equal intervals in the circumferential direction; four base plate internal threaded through holes are provided on the surface of the base plate with the center point of the base plate threaded hole as the center of the circle and at equal intervals in the circumferential direction; the transition plate internal threaded through hole and the base plate internal threaded through hole are fixedly connected by threads.

[0010] There are multiple overlapping transition plates between the standard force gauge and the base plate.

[0011] The number of the columns is four; the shapes of the top plate and the bottom plate are rounded rectangles.

[0012] The calibration device also includes four support columns; the four corners of the base plate are also respectively provided with base plate support column mounting holes.

[0013] The top plate, bottom plate and columns are all made of stainless steel.

[0014] The maximum measuring range of the coating adhesion tester is 70MPa.

[0015] The diameter of the spindle of the coating adhesion tester is 20 mm.

[0016] The beneficial effects of the utility model are:

[0017] The coating adhesion tester calibration device is small in size and easy to carry. It can be matched with the corresponding standard force gauge according to the coating adhesion tester of different measuring ranges for on-site calibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of a coating adhesion tester calibration device of the utility model;

[0019] Figure 2 This is a schematic diagram of the top plate structure of the coating bonding force calibration device according to an embodiment of the present utility model;

[0020] Figure 3 It is a top view schematic diagram of the transition plate structure of the coating bonding force calibration device according to an embodiment of the utility model;

[0021] Figure 4 It is a front view schematic diagram of the transition plate structure of the coating bonding force calibration device according to an embodiment of the utility model;

[0022] Figure 5 This is a schematic diagram of the column structure of the coating bonding force calibration device according to an embodiment of the utility model;

[0023] Figure 6 This is a schematic diagram of the pull rod structure of the coating bonding force calibration device according to an embodiment of the utility model;

[0024] Figure 7 This is a schematic diagram of the bottom plate structure of the coating bonding force calibration device according to an embodiment of the utility model;

[0025] Among them: 100-top plate, 110-top plate through hole, 121-first top plate column mounting hole, 122-second top plate column mounting hole, 123-third top plate column mounting hole, 124-fourth top plate column mounting hole, 200-pull rod, 210-coating adhesion tester spindle, 220-pull rod bottom thread, 310-first column, 311-column top thread hole, 312-column bottom thread hole, 400-standard dynamometer, 500-transition plate, 510-transition plate stepped hole, 521-first transition plate internal thread through hole, 522-second transition plate internal thread through hole, 523-third transition plate internal thread through hole , 524-threaded through hole in the fourth transition plate, 600-bottom plate, 610-threaded hole in the bottom plate, 621-threaded through hole in the first bottom plate, 622-threaded through hole in the second bottom plate, 623-threaded through hole in the third bottom plate, 624-threaded through hole in the fourth bottom plate, 631-first bottom plate column mounting hole, 632-second bottom plate column mounting hole, 633-third bottom plate column mounting hole, 634-fourth bottom plate column mounting hole, 641-first bottom plate support column mounting hole, 642-second bottom plate support column mounting hole, 643-third bottom plate support column mounting hole, 644-fourth bottom plate support column mounting hole, 710-first support column. DETAILED DESCRIPTION

[0026] The utility model provides a coating adhesion tester calibration device, and the utility model is further described in detail below in conjunction with the accompanying drawings.

[0027] like Figure 1The embodiment of the utility model shown discloses a coating adhesion tester calibration device, comprising: a top plate 100, a pull rod 200, a plurality of equal-height columns, a standard dynamometer 400 and a bottom plate 600; a top plate through hole 110 is provided at the center of the top plate 100, and a plurality of top plate column mounting holes are evenly arranged on the periphery of the top plate 100; a bottom plate threaded hole 610 is provided at the center of the bottom plate 600, and a plurality of bottom plate column mounting holes are evenly arranged on the periphery of the bottom plate 600; the top end of each column is vertically fixedly connected to the top plate 100 through the top plate column mounting hole, and the bottom end of each column is vertically fixedly connected to the bottom plate 600 through the bottom plate column mounting hole; the top plate 100 and the bottom plate 600 have the same size and corresponding hole positions;

[0028] The top and bottom of the standard dynamometer 400 are respectively provided with a top threaded hole of the standard dynamometer and a bottom threaded hole of the standard dynamometer; the top of the pull rod 200 is provided with a coating adhesion tester spindle 210, and the coating adhesion tester spindle 210 passes through the top plate through hole 110 and is fixedly connected to the coating adhesion tester; the bottom end of the pull rod 200 is provided with a pull rod bottom thread 220, and the pull rod bottom thread 220 is fixedly connected to the top threaded hole of the standard dynamometer through threaded matching; the bottom threaded hole of the standard dynamometer is fixedly connected to the bottom plate threaded hole 610 through threaded matching;

[0029] The axes of the pull rod 200, the top plate through hole 110, the standard dynamometer 400, and the bottom plate threaded hole 610 in the vertical direction are collinear.

[0030] In this embodiment, the top plate 100, the bottom plate 600 and the column form a storage space for accommodating the standard dynamometer 400, and the overall shape of the storage space is a rectangular frame. The top plate 100 and the bottom plate 600 are arranged in parallel, which is conducive to ensuring that the standard dynamometer 400 is perpendicular to the top plate 100 and the bottom plate 600 during measurement, thereby facilitating the improvement of the test accuracy.

[0031] In this embodiment, the volume of the coating adhesion tester calibration device is comparable to the size of the standard dynamometer 400 required to be accommodated. Compared with the universal testing machine used in the prior art, the coating adhesion tester calibration device disclosed in the utility model is more portable, can be separated from the calibration laboratory environment, and can realize on-site calibration.

[0032] In this embodiment, the coating adhesion tester and the standard dynamometer 400 are connected by the tie rod 200. To be compatible with coating adhesion testers of different specifications, tie rods 200 of various specifications can be manufactured, and a coating adhesion tester spindle 210 of corresponding specifications is provided on the top of each tie rod 200. By equipping tie rods 200 of various specifications, the adaptability of the coating adhesion tester calibration device during on-site calibration is improved.

[0033] The specific structure of the pull rod 200 is as follows Figure 6As shown, a coating adhesion tester spindle 210 is provided at the top end of the pull rod 200, and the coating adhesion tester spindle 210 passes through the top plate through hole 110 and is fixedly connected to the coating adhesion tester; a pull rod bottom end thread 220 is provided at the bottom end of the pull rod 200, and the pull rod bottom end thread 220 is fixedly connected to the top threaded hole of the standard dynamometer through threads.

[0034] In this embodiment, the coating adhesion tester spindle 210 passes through the top plate through hole 110 and is fixedly connected to the coating adhesion tester. With the help of the top plate through hole 110, the coating adhesion tester spindle 210 can pass through the top plate 100 and move up and down in the vertical direction. With the help of the top plate 100, the coating adhesion tester is stably supported, which is beneficial to improving the test accuracy.

[0035] In this embodiment, the axes of the pull rod 200, the top plate through hole 110, the standard dynamometer 400, the transition plate stepped hole 510 (when the transition plate is included), and the bottom plate threaded hole 610 are collinear in the vertical direction. By making the axes of the pull rod 200, the top plate through hole 110, the standard dynamometer 400, the transition plate stepped hole 510, and the bottom plate threaded hole 610 collinear in the vertical direction, it is ensured that the vertical direction is maintained during measurement, which is useful for improving the detection accuracy of the coating adhesion tester calibration device.

[0036] In an optional embodiment, the top end of each column is detachably connected to the top plate 100 through the top plate column mounting hole, and the bottom end of each column is detachably connected to the bottom plate 600 through the bottom plate column mounting hole. Figure 5 As shown, two ends of the column are respectively provided with a column top threaded hole 311 and a column bottom threaded hole 312, the top plate column mounting hole is fixedly connected to the column top threaded hole 311 by thread; the bottom plate column mounting hole is fixedly connected to the column bottom threaded hole 312 by thread, that is: the column is detachably vertically fixedly connected to the top plate 100 and the bottom plate 600, so that four columns of different lengths can be replaced according to the required height requirements of the standard dynamometer 400, thereby improving the adaptability of the coating adhesion tester calibration device.

[0037] In an optional embodiment, a transition plate 500 is provided between the standard dynamometer 400 and the base plate 600, and a transition plate stepped hole 510 is provided at the center of the transition plate 500, and the bottom of the standard dynamometer 400 is fixedly connected to the transition plate 500 through the transition plate stepped hole 510; four transition plate internal threaded through holes are arranged on the surface of the transition plate 500 with the center point of the transition plate stepped hole 510 as the center of the circle and at equal intervals in the circumferential direction; four base plate internal threaded through holes are arranged on the surface of the base plate 600 with the center point of the base plate threaded hole 610 as the center of the circle and at equal intervals in the circumferential direction; the transition plate internal threaded through hole and the base plate internal threaded through hole are fixedly connected by threads.

[0038] In this embodiment, a transition plate 500 is provided between the base plate 600 and the standard dynamometer 400 to achieve a detachable fixed connection. The transition plate 500 has a structure as shown in FIG. Figure 3 and Figure 4 As shown, Figure 3 It is a top view of the transition plate structure. Figure 4 This is a schematic diagram of the front view of the transition plate structure.

[0039] In this embodiment, the internal threaded through holes of the transition plate include: a first internal threaded through hole 521, a second internal threaded through hole 522, a third internal threaded through hole 523, and a fourth internal threaded through hole 524; the internal threaded through holes of the bottom plate include: a first internal threaded through hole 621, a second internal threaded through hole 622, a third internal threaded through hole 623, and a fourth internal threaded through hole 624. The transition plate 500 and the bottom plate 600 are fixedly connected through the eight internal threaded through holes, and the transition plate 500 is firmly fixed on the bottom plate 600 through threaded engagement.

[0040] In this embodiment, the transition plate 500 plays the role of an "adapter", and multiple transition plates 500 can be manufactured to achieve adaptation according to the interface requirements of different models of standard dynamometers 400, thereby improving the on-site adaptability of the coating adhesion tester calibration device. The transition plate internal threaded through holes of the multiple transition plates 500 adopt the same specifications, so that the same base plate 600 can be compatible with multiple transition plates 500 at the same time, further improving the adaptability of the coating adhesion tester calibration device.

[0041] In an optional embodiment, the standard force gauges 400 of different heights can be adapted by manufacturing transition plates 500 of different heights, thereby further improving the on-site adaptability of the coating adhesion tester calibration device.

[0042] In another optional embodiment, a plurality of stacked transition plates 500 are provided between the standard force gauge 400 and the base plate 600. By stacking a plurality of transition plates 500, standard force gauges 400 of different heights can be adapted, thereby further improving the on-site adaptability of the coating adhesion tester calibration device.

[0043] In an optional embodiment, the number of the columns is four; the top plate 100 and the bottom plate 600 are in the shape of rounded rectangles.

[0044] In this embodiment, four columns of equal height are vertically arranged between the top plate 100 and the bottom plate 600. The structure of the top plate 100 is as follows: Figure 2As shown, a top plate through hole 110 is provided at the center of the top plate 100, and the top plate 100 is a rounded rectangular shape when viewed from above. The four corners of the top plate 100 are respectively provided with a first top plate column mounting hole 121, a second top plate column mounting hole 122, a third top plate column mounting hole 123, and a fourth top plate column mounting hole 124. The bottom plate structure is as shown in FIG. Figure 7 As shown, a bottom plate threaded hole 610 is provided at the center of the bottom plate 600. The bottom plate 600 is a rounded rectangular shape when viewed from above. The four corners of the bottom plate 600 are respectively provided with a first bottom plate column mounting hole 631, a second bottom plate column mounting hole 632, a third bottom plate column mounting hole 633, and a fourth bottom plate column mounting hole 634. Four columns of equal height are vertically arranged between the top plate 100 and the bottom plate 600, including: a first column 310, a second column, a third column, and a fourth column; a single column structure is as shown in FIG. Figure 5 As shown, each column is provided with a column top threaded hole 311 and a column bottom threaded hole 312 at both ends, and the top plate column mounting hole is fixedly connected to the column top threaded hole 311 by thread; the bottom plate column mounting hole is fixedly connected to the column bottom threaded hole 312 by thread. In this embodiment, the four columns strike a balance between stability and manufacturing cost, and the top plate 100 and the bottom plate 600 are rounded rectangles, which are not only conducive to improving the stability of the coating adhesion tester calibration device, but also can be easily taken at the calibration site.

[0045] In an optional embodiment, the calibration device further includes four support columns, including: a first support column 710, a second support column, a third support column and a fourth support column; the four corners of the base plate 600 are also provided with base plate support column mounting holes. In this embodiment, the structure of the base plate 600 is as follows Figure 7 As shown, the four corners of the bottom plate 600 are also provided with bottom plate support column mounting holes, including: a first bottom plate support column mounting hole 641, a second bottom plate support column mounting hole 642, a third bottom plate support column mounting hole 643 and a fourth bottom plate support column mounting hole 644. The bottom plate 600 and the support column are fixedly connected through the bottom plate support column mounting holes. The support column is used to further improve the field adaptability of the coating adhesion tester calibration device, adapt to more complex test environments, help the coating adhesion tester calibration device to maintain levelness, and improve the detection accuracy of the coating adhesion tester calibration device.

[0046] In an optional embodiment, the top plate 100, the bottom plate 600 and the column are all made of stainless steel. In this embodiment, the top plate 100 and the bottom plate 600 are both thick stainless steel plates, and the column is a stainless steel cylinder. The stainless steel material combined with a large weight is conducive to improving the stability of the coating adhesion tester calibration device, and is not easy to wear, which is conducive to the durability of the equipment when performing on-site calibration under different working conditions for a long time.

[0047] In an optional embodiment, the maximum range of the coating adhesion tester is 70 MPa. The inventors have determined through extensive research that the maximum range of the coating adhesion tester most commonly used in the prior art is 70 MPa.

[0048] In an optional embodiment, the coating adhesion tester spindle 210 has a diameter of 20 mm. The inventors have determined through extensive research that the coating adhesion tester spindle 210 with a diameter of 20 mm has the best adaptability.

[0049] In this embodiment, by using the coating adhesion tester calibration device disclosed in the utility model, the purpose of restoring the test process has been achieved and on-site calibration has been realized. The specific use process is as follows:

[0050] In this embodiment, the coating adhesion tester is connected to the coating adhesion tester calibration device through a coating adhesion tester spindle 210 disposed at the top of a pull rod 200; the structure of the pull rod 200 is as follows: Figure 5 As shown, the coating adhesion tester spindle 210 at the top of the pull rod 200 passes through the top plate through hole 110 located at the center of the top plate 100 and is fixedly connected to the coating adhesion tester; the bottom of the pull rod 200 is fixedly connected to the top of the standard dynamometer 400 by threads; the bottom of the standard dynamometer 400 is detachably fixedly connected to the bottom plate 600 by a transition plate 500.

[0051] During calibration, operate the coating adhesion tester and read the reading of the standard dynamometer 400 on the coating adhesion tester calibration device. The reading unit of the standard dynamometer is kN, and the reading unit of the coating adhesion tester is MPa. The conversion relationship between kN and MPa in the prior art is used to convert the readings and unify the reading units.

[0052] The tester compares the full-scale, half-scale and 1 / 10-scale readings of the coating adhesion tester with the corresponding readings of the standard dynamometer 400. If the errors of the three measured readings are within the preset error range, the readings of the tested coating adhesion tester are considered accurate, thus achieving the force calibration of the pull-off method coating adhesion tester.

[0053] In order to verify the effectiveness of the coating adhesion tester calibration device disclosed in the utility model, the following verification experiment was conducted. The spindle diameter was 10 mm, and a coating adhesion tester with a range of 70 MPa was used. The force values ​​of four gears, 10 MPa, 30 MPa, 50 MPa and 70 MPa, were selected for testing. Each gear was tested twice. The test results are shown in Table 1. In 8 experiments, the error value of the calibrated coating adhesion tester was compared with the standard dynamometer conversion value obtained after conversion of the actual measured value of the standard dynamometer, and met the actual use requirements of the coating adhesion tester. The device can be used to trace the value of the coating adhesion tester.

[0054] Table 1 Calibration results statistics

[0055]

Claims

1. A coating adhesion tester calibration device, characterized in that: The calibration device comprises: a top plate (100), a pull rod (200), a plurality of columns of equal height, a standard dynamometer (400) and a bottom plate (600); a top plate through hole (110) is provided at the center of the top plate (100), and a plurality of top plate column mounting holes are evenly arranged on the periphery of the top plate (100); a bottom plate threaded hole (610) is provided at the center of the bottom plate (600), and a plurality of bottom plate column mounting holes are evenly arranged on the periphery of the bottom plate (600); the top end of each column is vertically fixedly connected to the top plate (100) through the top plate column mounting hole, and the bottom end of each column is vertically fixedly connected to the bottom plate (600) through the bottom plate column mounting hole; the top plate (100) and the bottom plate (600) have the same size and corresponding hole positions; The top and bottom ends of the standard dynamometer (400) are respectively provided with a top threaded hole of the standard dynamometer and a bottom threaded hole of the standard dynamometer; the top end of the pull rod (200) is provided with a spindle (210) of the coating adhesion tester, and the spindle (210) of the coating adhesion tester passes through the top plate through hole (110) and is fixedly connected to the coating adhesion tester; the bottom end of the pull rod (200) is provided with a pull rod bottom end thread (220), and the pull rod bottom end thread (220) is fixedly connected to the top threaded hole of the standard dynamometer through threaded matching; the bottom end threaded hole of the standard dynamometer is fixedly connected to the bottom plate threaded hole (610) through threaded matching; the axes of the pull rod (200), the top plate through hole (110), the standard dynamometer (400), and the bottom plate threaded hole (610) in the vertical direction are collinear.

2. The coating adhesion tester calibration device according to claim 1, characterized in that: The top end of each column is detachably connected to the top plate (100) in a vertically fixed manner via a top plate column mounting hole, and the bottom end of each column is detachably connected to the bottom plate (600) in a vertically fixed manner via a bottom plate column mounting hole.

3. The coating adhesion tester calibration device according to claim 1, characterized in that: A transition plate (500) is provided between the standard dynamometer (400) and the base plate (600), a transition plate stepped hole (510) is provided at the center of the transition plate (500), and the bottom of the standard dynamometer (400) is fixedly connected to the transition plate (500) through the transition plate stepped hole (510); four transition plate internal threaded through holes are arranged on the surface of the transition plate (500) with the center point of the transition plate stepped hole (510) as the center of the circle and at equal intervals in the circumferential direction; four base plate internal threaded through holes are arranged on the surface of the base plate (600) with the center point of the base plate threaded hole (610) as the center of the circle and at equal intervals in the circumferential direction; the transition plate internal threaded through hole and the base plate internal threaded through hole are fixedly connected by threads.

4. The coating adhesion tester calibration device according to claim 3, characterized in that: A plurality of overlapping transition plates (500) are arranged between the standard force measuring instrument (400) and the bottom plate (600).

5. The coating adhesion tester calibration device according to claim 1, characterized in that: The number of the uprights is four; the top plate (100) and the bottom plate (600) are in the shape of rounded rectangles.

6. The coating adhesion tester calibration device according to claim 1, characterized in that: The calibration device also includes four support columns; the four corners of the base plate (600) are also respectively provided with base plate support column mounting holes.

7. The coating adhesion tester calibration device according to claim 1, characterized in that: The top plate (100), the bottom plate (600) and the columns are all made of stainless steel.

8. The coating adhesion tester calibration device according to claim 1, characterized in that: The maximum measuring range of the coating adhesion tester is 70MPa.

9. The coating adhesion tester calibration device according to claim 1, characterized in that: The coating adhesion tester spindle (210) has a diameter of 20 mm.

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