Adhesive force testing clamp

Abstract

The utility model relates to the technical field of testing or analyzing materials by means of measuring physical properties of materials, in particular to an adhesive force testing clamp which comprises a limiting assembly, a fixing assembly and a testing assembly, and the limiting assembly comprises a limiting base and a limiting pin movably connected with the limiting base. The fixing assembly comprises a contact head and a working head coaxially connected with the contact head, the contact head is located on the side close to the limiting base, the two ends of the testing assembly are detachably connected with the limiting pin and the contact head respectively, and the testing assembly is coaxially connected with the contact head. The problem that in the prior art, the test result is poor in accuracy due to the fact that coaxial keeping cannot be determined is solved.

Description

Technical Field

[0001] This application relates to the field of materials technology, which involves testing or analyzing materials by measuring their physical properties, and more specifically, to an adhesion testing fixture. Background Technology

[0002] For coatings or films, adhesion is a technical indicator characterizing the strength of the bond between the coating or film and the coated surface through physical and chemical interactions. It is also an important performance indicator for ensuring the service life of the coating or film. For adhesion tests using only metal test columns, coaxial bonding of a set of test columns with adhesive is a necessary condition for ensuring the validity of the test results. For sandwich-type adhesion tests on substrates with single or double coatings, fixing a set of test columns to the upper and lower surfaces of the test specimen with adhesive, while keeping the upper and lower test columns coaxial, is a necessary condition for ensuring the validity of the test results.

[0003] The currently published Chinese patent, titled "A Pull-Off Method Paint Film Adhesion Test Fixture" with application number 201220221337.1, although it enables the testing of coating materials on aluminum alloy substrates, cannot guarantee that the tensile force on the test specimen remains coaxial during the test when testing columnar specimens, thus failing to guarantee the accuracy of the test. Utility Model Content

[0004] The purpose of this application is to provide an adhesion testing fixture that solves the problem of poor test results in the prior art due to the inability to determine coaxiality.

[0005] The technical solution of this application:

[0006] This application provides an adhesion testing fixture, including a limiting component, a fixing component, and a testing component. The limiting component includes a limiting base and a limiting pin movably connected to the limiting base. The fixing component includes a contact head and a working head coaxially connected to the contact head. The contact head is located on one side close to the limiting base. The two ends of the testing component are detachably connected to the limiting pin and the contact head, respectively, and the testing component is coaxially connected to the contact head.

[0007] In some embodiments, the limiting base includes a limiting block and a limiting plate, the two limiting plates are respectively connected to both ends of the limiting block and are arranged in parallel, and the upper surface of the limiting block is rotatably connected to an operating component.

[0008] In some embodiments, the limiting plate has strip-shaped mounting grooves, and the limiting pin passes through two of the strip-shaped mounting grooves.

[0009] In some embodiments, a fixing through hole is provided on the side of the contact head, and a working through hole is provided on the side of the working head. A fixing pin is movably connected in the fixing through hole, and a working pin is movably connected in the working through hole.

[0010] In some embodiments, the test assembly includes a first test post and a second test post, the first test post and the second test post being coaxially bonded to form an adhesive portion, the first test post being detachably connected to the limiting pin, and the second test post being detachably connected to the fixing pin.

[0011] In some embodiments, the contact head, the working head, the first test column, and the second test column are all cylindrical.

[0012] In some embodiments, the contact head has a fixed blind hole coaxial with it, the fixed through hole communicates with the fixed blind hole, the second test column has a connecting through hole on its side, the bottom of the second test column is located in the fixed blind hole, the fixed pin passes through the fixed through hole and the connecting through hole, the first test column has an installation through hole on its side, and the limiting pin passes through the installation through hole.

[0013] In some embodiments, the operating member is cylindrical, and an operating through hole is provided on the outer circumference of the operating member away from the limiting block, and an operating pin is movably connected in the operating through hole.

[0014] In some embodiments, the limiting block and the limiting plate are connected by bolts.

[0015] In some embodiments, the diameter of the contact head is larger than the diameter of the working head, and the diameter of the contact head is larger than the diameter of the second test column.

[0016] The technical solution of this application has at least the following advantages and beneficial effects:

[0017] This application provides an adhesion testing fixture, which includes a limiting component, a fixing component, and a testing component. Adhesion is tested by applying opposing forces to the limiting base and the working head. The detachable connection between the testing component, the limiting pin, and the contact head allows the entire fixture to be used repeatedly, reducing the testing cost of adhesion. By setting the testing component to be coaxially connected to the contact head, the testing component can always maintain a coaxial position with the contact head during the process of continuous pressure application, solving the problem of poor test accuracy in the prior art due to the inability to determine coaxiality. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this application;

[0019] Figure 2 This is a schematic diagram of the limiting component in this application.

[0020] In the diagram: 1-Limiting block; 2-Limiting plate; 3-Strip mounting groove; 4-Operating component; 5-Limiting pin; 6-Contact head; 7-Working head; 8-Fixing pin; 9-Working pin; 10-First test post; 11-Second test post; 12-Adhesive part; 13-Fixing blind hole; 14-Operating pin. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] Example

[0023] Please refer to the above as well. Figure 1-2 This application provides an adhesion testing fixture, which includes a limiting component, a fixing component, and a testing component. The limiting component includes a limiting base and a limiting pin 5 movably connected to the limiting base. The fixing component includes a contact head 6 and a working head 7 coaxially connected to the contact head 6. The contact head 6 is located on the side close to the limiting base. The two ends of the testing component are detachably connected to the limiting pin 5 and the contact head 6, respectively, and the testing component is coaxially connected to the contact head 6.

[0024] It is worth noting that this embodiment includes a limiting component, a fixing component, and a testing component. Adhesion testing is achieved by applying opposing forces to the limiting base and the working head 7. The detachable connection between the testing component, the limiting pin 5, and the contact head 6 allows the entire fixture to be reused repeatedly, reducing the testing cost of adhesion testing. By setting the testing component to be coaxially connected to the contact head 6, the testing component can always maintain a coaxial position with the contact head 6 during the process of continuous pressure application, solving the problem of poor test results caused by the inability to determine coaxiality in the prior art.

[0025] Preferably, the contact head 6 and the working head 7 are integrally formed.

[0026] In some embodiments, the limiting base includes a limiting block 1 and two limiting plates 2, which are respectively connected to both ends of the limiting block 1 and arranged in parallel. The limiting plates 2 provide a connection structure for the limiting pin 5, and the two limiting plates 2 enable limiting on both sides of the test component.

[0027] In some embodiments, the limiting plate 2 has strip-shaped mounting grooves 3, and the limiting pin 5 passes through two strip-shaped mounting grooves 3. The strip-shaped mounting grooves 3 provide sufficient freedom for the limiting pin 5, facilitating the installation and testing of test components of different sizes, thus solving the problem that the prior art can only test test pieces of one size, resulting in high testing costs.

[0028] In some embodiments, a fixing through hole is provided on the side of the contact head 6, and a working through hole is provided on the side of the working head 7. A fixing pin 8 is movably connected in the fixing through hole, and a working pin 9 is movably connected in the working through hole.

[0029] The device can be detachably connected to the test component via a fixed through hole and a fixed pin 8, thus improving its applicability.

[0030] In some embodiments, the test assembly includes a first test post 10 and a second test post 11. The first test post 10 and the second test post 11 are coaxially bonded to form an adhesive portion 12. The first test post 10 is detachably connected to a limiting pin 5, and the second test post 11 is detachably connected to a fixing pin 8. By coaxially bonding the first test post 10 and the second test post 11, the adhesion of the material at the bonding location can be tested. The coaxial bonding of the first test post 10 and the second test post 11 ensures that the first test post 10 and the second test post 11 remain in a coaxial position during the test.

[0031] In some embodiments, the contact head 6, working head 7, first test post 10, and second test post 11 are cylindrical. The contact head 6 has a fixed blind hole 13 coaxial with it, and a fixed through hole communicates with the fixed blind hole 13. The second test post 11 has a connecting through hole on its side, and the bottom of the second test post 11 is located in the fixed blind hole 13. A fixing pin 8 passes through the fixed through hole and the connecting through hole. The first test post 10 has a mounting through hole on its side, and a limiting pin 5 is installed in the mounting through hole.

[0032] The detachable connection between the contact head 6 and the first test post 10 is achieved through the connection between the fixing pin 8, the fixing through hole, and the connecting through hole, while also ensuring the coaxiality between the first test post 10 and the contact head 6. Similarly, the detachable connection between the second test post 11 and the limiting base is achieved through the connection between the mounting through hole and the limiting pin 5, while also ensuring the coaxiality between the second test post 11 and the limiting base. This ensures the coaxiality between the first test post 10, the second test post 11, the contact head 6, and the limiting base, further resolving the problem of poor test result accuracy in existing technologies due to the inability to guarantee coaxiality. This embodiment ensures that the tensile force on the specimen remains coaxial throughout the test process, guaranteeing good reproducibility of the test results. Furthermore, the specimen is easy to install, and the installation process does not subject the specimen to external forces.

[0033] Preferably, an adjusting ring is coaxially and detachably connected inside the fixed blind hole 13. When testing a smaller test post, the adjusting ring fills the gap inside the fixed blind hole 13, ensuring the coaxiality of the test post with the contact head 6 during the test.

[0034] In some embodiments, an operating component 4 is rotatably connected to the upper surface of the limiting block 1. The operating component 4 is cylindrical, and an operating through hole is provided on the outer circumference of the end of the operating component 4 away from the limiting block 1. An operating pin 14 is movably connected in the operating through hole. The rotatably connected operating component 4 facilitates disassembly and installation. On the other hand, regardless of whether there is a directional deviation in the pin holes of the first test column 10 and the second test column 11, it can be ensured that the first test column 10 and the second test column 11 are always coaxially stressed during the test, and the installation process on the tensile testing machine is not affected by external torque.

[0035] In some embodiments, the limiting block 1 and the limiting plate 2 are connected by bolts. The bolt connection enables a detachable connection between the limiting block 1 and the limiting plate 2, facilitating disassembly, installation, and storage.

[0036] In some embodiments, the diameter of the contact head 6 is larger than the diameter of the working head 7, and the diameter of the contact head 6 is larger than the diameter of the second test post 11. Setting the diameter of the contact head 6 to be larger than the diameter of the second test post 11 allows for better opening of the fixing blind hole 13 on the contact head 6, thus achieving a socketing relationship with the second test post 11.

[0037] It is worth noting that the working process of this embodiment is as follows: the first test column 10 and the second test column 11 are bonded together, then the limiting plate 2, the limiting block 1, and the operating member 4 are connected, the limiting pin 5 is used to connect the limiting plate 2 and the first test column 10, then the bottom of the second test column 11 is inserted into the fixing blind hole 13 of the contact head 6, then the fixing pin 8 is used to connect the contact head 6 and the second test column 11, then the operating pin 14 is inserted into the operating through hole, the working pin 9 is inserted into the working head 7, and finally the entire fixture is installed on the tensile testing machine for testing.

[0038] Preferably, the tension is increased at a rate of 1 MPa / s.

[0039] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An adhesion testing fixture, characterized in that, include: The device includes a limiting component, a fixing component, and a testing component. The limiting component includes a limiting base and a limiting pin (5) movably connected to the limiting base. The fixing component includes a contact head (6) and a working head (7) coaxially connected to the contact head (6). The contact head (6) is located on one side close to the limiting base. The two ends of the testing component are detachably connected to the limiting pin (5) and the contact head (6), respectively, and the testing component is coaxially connected to the contact head (6).

2. The clamp according to claim 1, characterized in that, The limiting base includes a limiting block (1) and a limiting plate (2). The two limiting plates (2) are respectively connected to the two ends of the limiting block (1) and are arranged in parallel. The upper surface of the limiting block (1) is rotatably connected to the operating component (4).

3. The clamp according to claim 2, characterized in that, The limiting plate (2) has a strip-shaped mounting groove (3), and the limiting pin (5) passes through the two strip-shaped mounting grooves (3).

4. The clamp according to claim 1, characterized in that, The contact head (6) has a fixed through hole on its side, and the working head (7) has a working through hole on its side. A fixed pin (8) is movably connected in the fixed through hole, and a working pin (9) is movably connected in the working through hole.

5. The clamp according to claim 4, characterized in that, The test assembly includes a first test post (10) and a second test post (11). The first test post (10) and the second test post (11) are coaxially bonded to form an adhesive part (12). The first test post (10) is detachably connected to the limiting pin (5), and the second test post (11) is detachably connected to the fixing pin (8).

6. The clamp according to claim 5, characterized in that, The contact head (6), the working head (7), the first test column (10), and the second test column (11) are all cylindrical.

7. The clamp according to claim 6, characterized in that, The contact head (6) has a fixed blind hole (13) coaxial with it, and the fixed through hole communicates with the fixed blind hole (13). The second test post (11) has a connecting through hole on its side, and the bottom of the second test post (11) is located in the fixed blind hole (13). The fixed pin (8) passes through the fixed through hole and the connecting through hole. The first test post (10) has an installation through hole on its side, and the limiting pin (5) is installed in the installation through hole.

8. The clamp according to claim 2, characterized in that, The operating component (4) is cylindrical, and an operating through hole is provided on the outer circle of the operating component (4) away from the limiting block (1), and an operating pin (14) is movably connected in the operating through hole.

9. The clamp according to claim 2, characterized in that, The limiting block (1) and the limiting plate (2) are connected by bolts.

10. The clamp according to claim 7, characterized in that, The diameter of the contact head (6) is larger than the diameter of the working head (7), and the diameter of the contact head (6) is larger than the diameter of the second test column (11).

Images