Calibrating device for adhesion meter

Abstract

The utility model discloses an adhesion meter calibration device, which comprises a hollow loading tool, a first connecting hole, a second connecting hole, a first connecting rod, a second connecting rod, a second connecting rod, a first connecting rod and a second connecting rod, and is characterized in that the hollow loading tool is internally provided with an accommodating cavity structure; the standard dynamometer is vertically arranged in the hollow loading tool, the two sides of the standard dynamometer do not make contact with the inner wall of the hollow loading tool, and the top of the standard dynamometer is detachably connected with the first connecting hole through a connecting piece; one end of the connector is detachably connected with the connecting piece, and the other end of the connector is connected with the adhesion meter; therefore, the stress of the adhesion meter and the stress of the standard dynamometer are coaxial. According to the utility model, the tension is transmitted to the standard dynamometer through the connector and the connecting piece through the tension bar of the adhesion tester, and the whole mechanical transmission path is consistent with the tension transmission mode of the paint film adhesion tester when the paint film adhesion is actually measured, so that the stress condition in the calibration process is ensured to truly reflect the actual working state. The pulling direction calibration can be carried out according to the actual working mode of the paint film adhesion tester, and the accuracy of the calibration result is improved.

Description

Technical Field

[0001] This utility model relates to the field of mechanical metrology technology. More specifically, this utility model relates to an adhesion tester calibration device. Background Technology

[0002] A paint film adhesion tester is an instrument used to evaluate the adhesion strength between a paint film and a substrate. In the coatings industry, to ensure the quality of these coating products, it is necessary to accurately measure paint film adhesion to ensure that the coating can firmly adhere to the surface of objects in different application scenarios. For example, the coating requirements in fields such as automobiles, ships, and construction are becoming increasingly stringent, placing higher demands on the accuracy and reliability of paint film adhesion testers. In industries such as machinery manufacturing and electronic equipment manufacturing, the coating quality of product surfaces directly affects the product's appearance, corrosion resistance, and service life. For example, the coating of mobile phone casings and home appliance casings requires precise adhesion testing to ensure that the paint film does not peel off during use. This necessitates the calibration of the tester to ensure the accuracy of the test results.

[0003] Most existing calibration methods for paint adhesion testers employ reaction frame auxiliary equipment and refer to the calibration methods for working force gauges, which are inconsistent with the actual working conditions of the paint adhesion tester. On the one hand, this results in calibration results that fail to reflect the actual state of the equipment, leading to a lack of accuracy. On the other hand, paint adhesion testers with built-in lever stroke cannot be calibrated using reaction frame auxiliary equipment. Summary of the Invention

[0004] One object of this invention is to solve at least the aforementioned problems and / or defects, and to provide at least the advantages described below.

[0005] The purpose of this invention is to provide an adhesion tester calibration device, which is designed for...

[0006] To achieve the objectives and other advantages of this invention, an adhesion tester calibration device is provided, comprising:

[0007] A hollow loading fixture has an internal cavity structure, and a first connecting hole is provided on the top of the hollow loading fixture;

[0008] A standard force gauge is vertically installed inside the hollow loading fixture, and its two sides do not contact the inner wall of the hollow loading fixture.

[0009] A connector that connects to the top of the standard force gauge and passes through the first connection hole;

[0010] The connector has one end detachably connected to the connector and the other end connected to the adhesion tester, so as to achieve coaxial force distribution between the adhesion tester and the standard force measuring instrument.

[0011] Preferably, the bottom of the hollow loading fixture is provided with a second connecting hole, and the bottom of the standard force gauge is fixed to the hollow loading fixture by a fastener.

[0012] Preferably, the connector comprises one or more connecting rods of different lengths.

[0013] Preferably, the connecting rod is provided with a third connecting hole, the third connecting hole has an internal thread, one end of the connecting head is provided with an external thread, and the connecting head is threadedly connected to the connecting rod.

[0014] Preferably, the other end of the connector is a spherical structure adapted to the inner wall of the spindle of the adhesion tester.

[0015] Preferably, the adhesion tester calibration device further includes a protective housing that covers the outside of the standard force gauge and the hollow loading fixture.

[0016] Preferably, the adhesion tester calibration device further includes:

[0017] A support script body is provided, which is supported at the bottom of the hollow loading fixture, and the interior of the support script body is provided with multiple threaded holes;

[0018] Multiple support feet, the outer diameter of each support foot is adapted to the inner diameter of each threaded hole, one end of each support foot is located in each threaded hole, and the other end is provided with an adjustment knob;

[0019] Multiple anti-slip pads are attached to the bottom of each support foot.

[0020] This utility model has at least the following beneficial effects:

[0021] First, the adhesion tester calibration device of this utility model connects the spindle of the adhesion tester to the standard force measuring instrument through replaceable connectors and connectors. This design ensures that during the calibration process, the tension is transmitted from the tension rod of the adhesion tester through the connectors and connectors to the standard force measuring instrument. The entire force transmission path is consistent with the tension transmission method of the adhesion tester when actually measuring the adhesion of the paint film, ensuring that the force situation during the calibration process truly reflects the actual working state.

[0022] Secondly, the adhesion tester calibration device of this utility model achieves relative fixation and coaxial force through reasonable structural design, ensuring that the line of action of the force coincides with the direction of the tensile force during actual operation, avoiding the generation of additional component force due to force deviation, thereby ensuring that the force value measured by the standard force measuring instrument accurately reflects the real tensile force applied by the adhesion tester and improving the accuracy of the calibration results.

[0023] Third, this utility model's adhesion tester calibration device uses replaceable connectors to customize and match connectors for various sizes of spindles, allowing the calibration device to be tightly connected to different models of adhesion testers. This ensures that regardless of the brand of adhesion tester used, the calibration device can accurately simulate its actual working mode for directional calibration, avoiding calibration errors caused by mismatched connections and ensuring that the calibration results truly reflect the performance of the testing instrument.

[0024] Fourth, the adhesion meter calibration device of this utility model can adapt to ground with different flatness by setting a support foot assembly including a support foot body, multiple support feet and multiple anti-slip pads, ensuring that the calibration device always remains horizontal and stable, thus improving the overall stability.

[0025] Fifth, the connecting components in the adhesion tester calibration device of this utility model may include one or more connecting rods of different lengths or structures, which can be selected and combined according to the specific structure of the adhesion tester and calibration requirements. By adjusting the length and connection angle of the connecting rods, it is possible to adapt to the spatial layout and tensile force application direction of different adhesion testers, further ensuring the consistency between the calibration process and the actual working method, and improving the accuracy of calibration.

[0026] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of an adhesion tester calibration device according to an embodiment of the present invention;

[0028] Figure 2 This is a cross-sectional view of the hollow loading fixture of the adhesion tester calibration device according to an embodiment of the present invention;

[0029] Figure 3 This is a cross-sectional view of the standard force measuring instrument in an adhesion tester calibration device according to an embodiment of this utility model;

[0030] Figure 4 This is a cross-sectional view of a connecting rod in an adhesion tester calibration device according to an embodiment of the present invention;

[0031] Figure 5 This is a front view of the connector in an adhesion tester calibration device according to an embodiment of the present invention;

[0032] Reference numerals: 1: Hollow loading fixture, 100: First connecting hole, 110: Second connecting hole, 2: Standard force gauge, 200: Mounting hole, 3: Connector, 300: Third connecting hole, 4: Connector head, 400: External thread, 410: Spherical structure. Detailed Implementation

[0033] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0034] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0035] It should be noted that in the description of this utility model, the terms "horizontal", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not 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 utility model.

[0036] It should be noted that, unless otherwise specified, the control methods in the following technical solutions are conventional methods, and the equipment structures, unless otherwise specified, can be obtained commercially.

[0037] like Figures 1-5 This utility model provides an adhesion tester calibration device, comprising:

[0038] A hollow loading fixture 1 has an internal cavity structure, and a first connecting hole 100 is provided on the top of the hollow loading fixture 1.

[0039] The standard force gauge 2 is vertically installed inside the hollow loading fixture 1 and its two sides do not contact the inner wall of the hollow loading fixture 1;

[0040] Connector 3, which is connected to the top of the standard force gauge 2 and passes through the first connection hole 100;

[0041] The connector 4 has one end detachably connected to the connector 3 and the other end connected to the adhesion tester, so as to achieve coaxial force distribution between the adhesion tester and the standard force measuring instrument 2.

[0042] In the above technical solution, the hollow loading fixture 1 is made of high-strength aluminum alloy, which is lightweight and high-strength, thus improving the portability and stability of the calibration device. The top and bottom of the hollow loading fixture 1 are squares with sides of 84 mm, and the height is 124 mm. The interior of the hollow loading fixture 1 is designed as a rectangular cavity with a width of 60 mm and a height of 100 mm. A first connecting hole with a diameter of 20 mm is machined at the center of the top for the connector 3 to pass through. The standard force gauge 2 is a high-precision standard force gauge with a range of 0–500 N and an accuracy of ±0.1% FS. Its height is 100 mm, ensuring it can be placed vertically within the cavity of the hollow loading fixture and maintain a certain gap with the inner wall of the fixture to avoid affecting measurement accuracy due to friction or collision with the inner wall of the fixture during measurement. Connector 3: One end is tightly connected to the threaded hole on the top of the standard force gauge via a thread, and the other end passes through the first connecting hole 100 of the hollow loading fixture 1 for connecting the connector 4. Connector 4: Based on the spindle design of common adhesion testers, one end is machined with an external thread that matches the connector 3 for detachable connection with the connector 3; the other end is designed with a spherical structure that is compatible with the adhesion tester spindle to ensure a tight connection with the adhesion tester and achieve coaxial force distribution between the two.

[0043] Assembly process:

[0044] Carefully place the standard force gauge 2 vertically into the cavity of the hollow loading fixture 1, ensuring it is centered and not in contact with the fixture. Use connector 3 to connect the top of the standard force gauge 2 to the top of the hollow loading fixture 1. Pass the smaller diameter end of connector 3 through the first connecting hole 100 and tighten it with threads to secure it to the threaded hole on the top of the standard force gauge 2. Connect one end of connector 4 to the exposed end of connector 3 with threads and tighten it. Then connect the other end of connector 4 to the adhesion meter according to the matching spindle to complete the assembly of the entire adhesion meter calibration device.

[0045] Calibration procedure:

[0046] Place the assembled adhesion meter calibration device on a stable workbench, ensuring the bottom of the fixture is in close contact with the workbench surface without any shaking. Calibrate under ambient conditions of 23±2℃ and relative humidity not exceeding 80%.

[0047] Turn on the standard force gauge to put it into working condition, and set the measurement parameters and data recording method.

[0048] Install the adhesion tester on connector 4, set the spindle diameter and other relevant parameters, set the pressure value to the upper limit of the measurement range, and start the adhesion tester to run 3 times. Then, set the pressure according to the specifications or customer requirements, start the equipment, and record the pressure value displayed on the equipment and the force value of the standard force gauge. Repeat the measurement 3 times for each pressure point.

[0049] By comparing and analyzing the actual force value recorded by the standard force gauge 2 with the measured value displayed by the adhesion tester, the measurement error of the adhesion tester under different force values ​​is calculated.

[0050] Based on the measurement error, the adhesion meter should be calibrated and adjusted accordingly, such as by adjusting the internal calibration parameters of the instrument or replacing the sensor, so that the measurement accuracy of the adhesion meter meets the requirements.

[0051] In another technical solution, the bottom of the hollow loading fixture 1 is provided with a second connecting hole 110, and the bottom of the standard force gauge 2 is fixed to the hollow loading fixture 1 by a fastener.

[0052] In the above technical solutions, such as Figure 2 The cross-sectional view of the hollow loading fixture 1 shown is provided. The hollow loading fixture 1 is made of high-strength aluminum alloy, a material characterized by its light weight and high strength, which is beneficial for the portability and stability of the calibration device. The top and bottom of the hollow loading fixture 1 are squares with sides of 84 mm, and the height of the hollow loading fixture 1 is 124 mm. The interior of the hollow loading fixture 1 is designed as a cuboid cavity with a width of 60 mm and a height of 100 mm. A first connecting hole with a diameter of 20 mm is machined at the center of the top for the connector 3 to pass through. An M12×1.5 threaded hole is machined at the center of the bottom. The bottom of the standard force gauge 2 is also provided with a threaded hole of the same size. The two are connected and fixed by a screw or bolt adapted to the threaded hole.

[0053] In another technical solution, the connector 3 includes one or more connecting rods of different lengths.

[0054] In the above technical solution, the connector 3 includes one or more connecting rods of different lengths or structures, which can be selected and combined according to the specific structure and calibration requirements of the adhesion meter. By adjusting multiple connecting rods, the length and connection angle of the connector 3 can be adjusted, which can adapt to the spatial layout and tensile force application direction of different adhesion meters, further ensuring the consistency between the calibration process and the actual working method, and improving the accuracy of calibration.

[0055] In another technical solution, the connecting rod is provided with a third connecting hole 300, the third connecting hole 300 has an internal thread, one end of the connecting head 4 is provided with an external thread, and the connecting head 4 is threadedly connected to the connecting rod.

[0056] In the above technical solutions, such as Figure 4 As shown, the connecting rod is made of No. 45 steel, which has good comprehensive mechanical properties and meets the strength requirements of the calibration device. One end of the connecting rod, resting on the first connecting hole 100, is a cylinder with a height of 1.5 mm and a diameter of 20 mm. It has an M8×1.25 threaded hole, i.e., the third connecting hole 300, with a thread depth of 25 mm. The connector 4 is made of stainless steel to prevent rust and corrosion, ensuring normal operation in various environments. One end of the connector 4 has an external thread that matches the M8×1.25 threaded hole, enabling threaded connection between the connector 4 and the connecting rod. The other end of the connecting rod has an M12×1.5 external thread, and the top of the standard force gauge 2, which connects to the other end of the connecting rod, has an M12×1.5 internal threaded hole, which is threaded to the other end of the connecting rod.

[0057] In another technical solution, the other end of the connector 4 is a spherical structure adapted to the inner wall of the spindle of the adhesion tester.

[0058] In the above technical solutions, such as Figure 5 As shown, one end of the connector 4 is provided with an M8×1.25 external thread that is compatible with the third connecting hole 300. The external thread is integrally formed with a cylinder with a height of 1.5 mm and a diameter of 20 mm, which extends upward to form a spherical structure that is compatible with the inner wall of the spindle of the adhesion tester. The dimensions of the connector 4 and the connector 3 can be customized and replaced according to the size of the adhesion tester spindle to ensure that the calibration device can adapt to the calibration work of various types of adhesion testers.

[0059] In another technical solution, the adhesion tester calibration device further includes:

[0060] A protective outer shell is provided, which covers the outside of the standard force gauge 2 and the hollow loading fixture 1.

[0061] In the above technical solution, the protective shell is made of high-strength engineering plastics, such as polycarbonate (PC). PC material has good mechanical strength, impact resistance and corrosion resistance, which can effectively protect the internal standard force gauge and hollow loading tooling. At the same time, it is lightweight and easy to carry and operate.

[0062] Structural Design: The protective housing is rectangular in shape, with dimensions customized to fit the standard force gauge 2 and the hollow loading fixture 1. Its internal space is designed to tightly accommodate the standard force gauge 2 and the hollow loading fixture 1, with a 5-10 mm gap around the perimeter for easy installation and vibration damping. The top and bottom of the protective housing are detachable, secured with clips or screws, facilitating disassembly for maintenance or replacement of internal components.

[0063] Opening and Interface Design: A circular opening with a diameter slightly larger than that of connector 3 is made at the position where connector 3 protrudes from the protective shell, ensuring that connector 3 can pass through smoothly without affecting the protective effect. Simultaneously, a small, openable window is designed on the side of the protective shell for installing data transmission interfaces or power interfaces, facilitating connection to external devices.

[0064] Install a protective casing:

[0065] After assembling the standard force gauge 2 and the hollow loading fixture 1, insert the protective shell from the top or bottom to cover the internal components.

[0066] Align the clips or screw holes on the top and bottom of the protective shell and use the appropriate tools to secure it, ensuring that the protective shell is firmly installed and will not loosen or fall off during use.

[0067] Insert connector 3 through the circular opening of the protective shell and connect connector 4 to the adhesion meter to complete the installation of the entire adhesion meter calibration device.

[0068] In another technical solution, the adhesion tester calibration device further includes:

[0069] A support script body is provided, which is supported at the bottom of the hollow loading fixture, and the interior of the support script body is provided with multiple threaded holes;

[0070] Multiple support feet, the outer diameter of each support foot is adapted to the inner diameter of each threaded hole, one end of each support foot is located in each threaded hole, and the other end is provided with an adjustment knob;

[0071] Multiple anti-slip pads are attached to the bottom of each support foot.

[0072] In the above technical solutions,

[0073] Support script design and creation:

[0074] Material selection: The support base is made of aluminum alloy. Aluminum alloy is lightweight, high-strength, and corrosion-resistant, which can meet the support requirements of the support base and is not easy to rust.

[0075] Dimensions and Structure: The support base is designed as a cuboid, with its length and width determined by the bottom dimensions of the hollow loading fixture to ensure stable support. The height is 50 mm. Inside the support base, at least four threaded holes are evenly distributed, with an M8×1.25 thread specification to provide sufficient connection strength.

[0076] Support leg design and manufacturing:

[0077] Material selection: The support legs are made of stainless steel to ensure they are sturdy, durable, and not easily deformed.

[0078] Dimensions and Structure: The outer diameter of the support leg is machined to match the internal threaded hole of the support leg body, that is, the outer diameter is slightly smaller than the major diameter of the M8 thread, ensuring smooth screwing into the threaded hole. The support leg is 80 mm long, with an external thread of 20 mm length machined at one end to match the threaded hole; the other end is welded with a 30 mm diameter circular adjustment knob for easy manual adjustment of the support leg height by the user.

[0079] Preparation of anti-slip mats:

[0080] Material selection: Nitrile rubber is used to make the anti-slip mat. Nitrile rubber has good anti-slip properties and wear resistance, which can effectively prevent the calibration device from sliding during operation.

[0081] Size and Installation: The anti-slip mat is designed as a circle with a diameter of 40mm and a thickness of 5mm. Apply strong adhesive evenly to the bottom of each support foot, then accurately attach the anti-slip mat to the bottom of the support foot, ensuring a firm bond without air bubbles or curling edges.

[0082] Installation and debugging:

[0083] When the test site is not level, in order to improve calibration accuracy and ensure that the hollow loading fixture 1 is in a horizontal state, the height of the support legs is adjusted to ensure that the upper surface of the support base is horizontal.

[0084] Place the support script body with the support feet installed at the bottom of the hollow loading fixture 1, adjust its position so that the support script body stably supports the hollow loading fixture 1.

[0085] Adjust the height of each support leg by rotating the adjustment knob to ensure the hollow loading fixture 1 is level. A level can be used to assist in measurement to ensure the calibration device is placed stably.

[0086] Although the technical solution of this utility model has been disclosed above, it is not limited to the applications listed in the specification and embodiments. It can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. An adhesion tester calibration device, characterized in that, include: A hollow loading fixture has an internal cavity structure, and a first connecting hole is provided on the top of the hollow loading fixture; A standard force gauge is vertically installed inside the hollow loading fixture, and its two sides do not contact the inner wall of the hollow loading fixture. A connector that connects to the top of the standard force gauge and passes through the first connection hole; The connector has one end detachably connected to the connector and the other end connected to the adhesion tester, so as to achieve coaxial force distribution between the adhesion tester and the standard force measuring instrument.

2. The adhesion tester calibration device as described in claim 1, characterized in that, The bottom of the hollow loading fixture is provided with a second connecting hole, and the bottom of the standard force gauge is fixed to the hollow loading fixture by a fastener.

3. The adhesion tester calibration device as described in claim 1, characterized in that, The connector includes one or more connecting rods of different lengths.

4. The adhesion tester calibration device as described in claim 3, characterized in that, The connecting rod is provided with a third connecting hole, the third connecting hole has an internal thread, one end of the connecting head is provided with an external thread, and the connecting head is threadedly connected to the connecting rod.

5. The adhesion tester calibration device as described in claim 1, characterized in that, The other end of the connector is a spherical structure adapted to the inner wall of the spindle of the adhesion tester.

6. The adhesion tester calibration device as described in claim 1, characterized in that, Also includes: A protective housing is provided, which covers the standard force gauge and the hollow loading fixture.

7. The adhesion tester calibration device as described in claim 1, characterized in that, Also includes: A support script body is provided, which is supported at the bottom of the hollow loading fixture, and the interior of the support script body is provided with multiple threaded holes; Multiple support feet, the outer diameter of each support foot is adapted to the inner diameter of each threaded hole, one end of each support foot is located in each threaded hole, and the other end is provided with an adjustment knob; Multiple anti-slip pads are attached to the bottom of each support foot.

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