Rivet nut sealing detection jig

Abstract

A rivet nut sealing detection jig comprises a base, a test plate and a pressing plate, the base is provided with a first cavity with an upward opening, and a first O-shaped ring is assembled at the opening of the first cavity. An air channel penetrating through the first cavity is further arranged in the base, one end of the air channel is externally connected with an air pump through an air pipe, and the other end of the air channel is connected with a pressure gauge. The test board is provided with a detection area which corresponds to the first cavity and is used for assembling a rivet nut. A second cavity corresponding to the first cavity is formed in the pressing plate, and the second cavity is through up and down. When the sealing performance is detected, the test plate is clamped between the base and the pressing plate by using the connecting piece, and the detection area on the test plate is pressed at the opening of the first cavity to seal the first cavity. Compared with the prior art, the device has the following beneficial effects that the detection precision is greatly improved, the environmental protection and standardization of the detection process are realized, and a reliable solution is provided for the quality control of riveting assembly.

Description

Technical Field

[0001] The utility model belongs to the technical field of sealing detection of rivet nuts, and in particular relates to a sealing detection jig for rivet nuts. Background Art

[0002] In order to meet the stringent standards of high strength, toughness and weather resistance, modern rivet nuts generally adopt advanced surface treatment processes, including but not limited to electroplating technology (such as zinc and nickel coatings), phosphating and Dacromet coatings, etc. These treatments are applied to high-performance materials such as high-strength alloy steel, stainless steel, titanium-based alloys and a series of aluminum alloys. This combination of materials not only demonstrates excellent mechanical strength and toughness advantages, but also has outstanding corrosion resistance and weather resistance, ensuring its long-term service under extreme conditions and maintaining its functions. Given that the sealing performance of the rivet connection is directly related to the overall sealing performance of the component, which in turn affects the safety and service life of the product, it is particularly critical to implement accurate and efficient sealing testing of rivet nuts.

[0003] Existing detection methods, such as manual visual inspection, liquid penetration test and basic air tightness test, are widely used, but they all have obvious limitations. Manual visual inspection is highly dependent on the subjective judgment of the inspector, which is easily affected by personal experience fluctuations, and the test results are difficult to quantify; although the liquid penetration test can directly indicate the leakage point, its detection cycle is long, inefficient, and accompanied by the risk of environmental pollution; as for the simple air tightness test, it is often difficult to meet the requirements of precision sealing verification due to the lack of a sophisticated air pressure control mechanism and a stable test environment.

[0004] In summary, there is an urgent need for a more scientific, rigorous, efficient and accurate testing method to overcome the defects of the existing technology and ensure that the sealing performance of the rivet nuts is comprehensively and reliably evaluated. Utility Model Content

[0005] In view of the above problems, the utility model provides a rivet nut sealing detection fixture, which greatly improves the detection accuracy, realizes the environmental protection and standardization of the detection process, and provides a reliable solution for the quality control of rivet assembly.

[0006] A rivet nut sealing detection jig includes a base, a test plate and a pressure plate. The base is provided with a first cavity opening upward, and a first O-ring is installed at the opening of the first cavity. An air passage penetrating the first cavity is also provided in the base, one end of the air passage is connected to an air pump through an air pipe, and the other end is connected to a pressure gauge. The test plate is provided with a detection area for assembling rivet nuts corresponding to the first cavity. A second cavity is provided on the pressure plate corresponding to the first cavity, and the second cavity is connected from top to bottom. When performing a sealing test, a connector is used to clamp the test plate between the base and the pressure plate, and the detection area on the test plate is pressed at the opening of the first cavity to seal the first cavity.

[0007] Preferably, a pressure relief groove is further provided in the base, the pressure relief groove is communicated with the first cavity, the pressure relief groove is connected to a pressure relief valve, and after the detection is completed, the air pressure in the first cavity is released through the pressure relief groove.

[0008] Preferably, the pressure plate is equipped with a second O-ring at the lower opening of the second cavity, and the second O-ring can effectively prevent the test plate from loosening during the detection process.

[0009] Preferably, the number of detection areas on the test plate is at least two groups, which improves the efficiency of a single detection, reduces the frequency of plate replacement, and facilitates comparative testing or simultaneous detection of rivet nuts of different models and specifications, speeding up the detection process, and is suitable for quality control needs in mass production.

[0010] Preferably, the base and the pressing plate are made of aluminum alloy.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] Enhanced detection accuracy: Using an air pump to control the air pressure and a pressure gauge for real-time monitoring can accurately determine the sealing performance and reduce the misjudgment rate.

[0013] Environmentally friendly: The air tightness test avoids the environmental pollution problem of liquid penetration test, which is more green and sustainable.

[0014] Wide applicability: It can adapt to rivet nuts of different specifications and models, improving the versatility and flexibility of the tooling.

[0015] Automation and standardization: By setting specific air pressure values ​​and holding time, a clear standard is provided for judging whether the sealing performance of the rivet assembly is qualified or not, which improves the objectivity and accuracy of the detection and reduces the influence of human factors.

[0016] Improve detection efficiency: The design allows multiple groups of rivet nuts to be detected simultaneously, which improves the efficiency of a single test, reduces the frequency of plate changes, and facilitates comparative testing or simultaneous detection of rivet nuts of different models and specifications, speeding up the detection process and is suitable for quality control needs in mass production. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional schematic diagram of the sealing detection fixture.

[0018] Figure 2 This is a structural cross-sectional view of the sealing detection fixture.

[0019] Figure 3 This is the structural explosion diagram of the sealing detection fixture.

[0020] Figure 4 A three-dimensional schematic diagram of the base.

[0021] The following is a description of the markings in the accompanying drawings of the specification:

[0022] 10. Base; 11. First cavity; 12. Airway; 13. Pressure gauge; 14. Pressure relief groove; 15. First O-ring;

[0023] 20. Pressing plate; 21. Second cavity; 22. Second O-ring; 23. Bolt; 24. Gasket;

[0024] 30. Test plate; 31. Rivet nut. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0026] In the following embodiments, the same or similar reference numerals throughout represent the same or similar components or components with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limitations on the present invention.

[0027] In the description of the present utility model, it should be understood that the terms: center, longitudinal, transverse, length, width, thickness, up, down, front, back, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc. indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present utility model and simplifying the description, and therefore cannot be understood as limiting the present utility model. In addition, the terms: first, second, etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features shown. In the description of the present utility model, unless otherwise clearly specified and limited, the terms: install, connect, connect, etc. should be understood in a broad sense, and ordinary technicians in this field can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] Reference Figures 1 to 4 A rivet nut sealing detection fixture includes a base 10, a test plate 30 and a pressure plate 20. The base 10 is provided with a first cavity 11 opening upward, and a first O-ring 15 is installed at the opening of the first cavity 11. The first O-ring 15 can effectively prevent gas leakage and ensure a stable closed environment in the cavity. The base 10 is also provided with an air channel 12 running through the first cavity 11. One end of the air channel 12 is connected to an air pump through an air pipe, and the other end is connected to a pressure gauge 13. The test plate 30 is provided with a detection area for assembling a rivet nut 31 corresponding to the first cavity 11. The pressure plate 20 is provided with a second cavity 21 corresponding to the first cavity 11, and the second cavity 21 is connected from top to bottom. When performing a sealing test, a connector is used to clamp the test plate 30 between the base 10 and the pressure plate 20, and the detection area on the test plate 30 is pressed at the opening of the first cavity 11 to seal the first cavity 11. The connecting parts include bolts 23 and gaskets 24 to ensure the tightness and reliability of the connection.

[0029] Furthermore, a pressure relief groove 14 is also provided in the base 10, and the pressure relief groove 14 is connected to the first cavity 11. The pressure relief groove 14 is connected to a pressure relief valve, and after the test is completed, the air pressure in the first cavity 11 is released through the pressure relief groove 14. A second cavity 21 is provided on the pressure plate 20 corresponding to the first cavity 11, and the second cavity 21 is connected from top to bottom. The second cavity 21 is used to accommodate the nut head of the rivet nut 31 and release the air pressure when the sealing of the assembly of the rivet nut 31 is insufficient. The pressure plate 20 is equipped with a second O-ring 22 at the lower opening of the second cavity 21, and the second O-ring 22 can effectively prevent the test plate 30 from loosening during the test process.

[0030] Preferably, the number of detection areas on the test plate 30 is at least two groups, and the number can be determined according to the detection requirements. This design improves the efficiency of a single detection, reduces the frequency of plate replacement, and is convenient for comparative testing or simultaneous detection of rivet nuts 31 of different models and specifications, thereby speeding up the detection process and being suitable for quality control requirements in mass production.

[0031] In addition, the jig can be made of aluminum alloy to ensure good pressure resistance and lightweight properties, while the corrosion resistance of aluminum alloy also extends the service life of the tooling. In order to adapt to a wider range of testing needs, the tooling also reserves the possibility of upgrading and expansion. For example, the pressure gauge 13 can be replaced with a digital pressure sensor to achieve digital and automated recording of air pressure monitoring, providing convenience for long-term quality tracking. In addition, by adjusting the design of the airway 12 and adding a regulating valve, the system can also flexibly adapt to the air pressure requirements under different test standards, further expanding its scope of application.

[0032] When using the rivet nut sealing detection fixture described in the utility model for detection, the steps are as follows: assemble the rivet nut 31 on the test plate 30, and assemble and fix the test plate 30 and the fixture so that the detection area of ​​the test plate 30 is pressed at the opening of the first cavity 11 to seal the first cavity 11. Then, an air pressure of 10KPa is introduced into the first cavity 11 through an air pump and maintained for 90 seconds. Observe the reading of the pressure gauge 13 while maintaining the air pressure. If the reading of the pressure gauge 13 becomes smaller, it means that the sealing performance of the rivet assembly is unqualified. If there is no obvious drop in air pressure and signs of leakage, it can be determined that the sealing of the rivet process meets the design requirements.

[0033] The protection scope of the present invention includes but is not limited to the above embodiments. The protection scope of the present invention shall be based on the claims. Any replacement, deformation, and improvement of the technology that can be easily thought of by technicians in this field shall fall within the protection scope of the present invention.

Claims

1. A rivet nut sealing detection fixture, characterized in that: The invention comprises a base (10), a test plate (30) and a pressure plate (20); the base (10) is provided with a first cavity (11) which is open upwards, and a first O-ring (15) is installed at the opening of the first cavity (11); the base (10) is also provided with an air passage (12) which passes through the first cavity (11); one end of the air passage (12) is connected to an air pump through an air pipe, and the other end is connected to a pressure gauge (13); The test plate (30) is provided with a detection area corresponding to the first cavity (11) and used for assembling the rivet nut (31); A second cavity (21) is provided on the pressing plate (20) corresponding to the first cavity (11), and the second cavity (21) is connected vertically; when performing a sealing test, a connecting piece is used to clamp a test plate (30) between the base (10) and the pressing plate (20), and a test area on the test plate (30) is pressed against an opening of the first cavity (11) to seal the first cavity (11).

2. A rivet nut sealing detection jig according to claim 1, characterized in that: A pressure relief groove (14) is also provided in the base (10), and the pressure relief groove (14) is communicated with the first cavity (11).

3. The rivet nut sealing detection jig according to claim 1 is characterized in that: The pressure plate (20) is equipped with a second O-ring (22) at the lower opening of the second cavity (21).

4. The rivet nut sealing detection jig according to claim 1, characterized in that: The number of detection areas on the test plate (30) is at least two groups.

5. The rivet nut sealing detection jig according to claim 1, characterized in that: The base (10) and the pressing plate (20) are made of aluminum alloy.

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