Product air tightness testing apparatus

Abstract

This utility model relates to a product airtightness testing device, comprising: a support component, including an industrial control computer, a bracket, a lifting cylinder, an upper plug, and a digital display air pressure regulating valve; a clamping component installed on the top surface of the support component; the clamping component including a fixed plate, a lower plug, a floating plate, and a fixture; and an air inlet component installed at one end of the clamping component; the air inlet component including a push-pull cylinder and an air inlet connector. The above-mentioned product airtightness testing device has a simple structure and is easy to use. The lifting cylinder drives the upper plug to press down, causing the upper and lower plugs to seal the top and bottom ends of the product respectively. Then, the push-pull cylinder drives the air inlet connector to connect to the air inlet pipe, inputting positive pressure gas into the product. The reading of the digital display air pressure regulating valve is then observed to determine whether the product leaks. The entire process eliminates the need for cumbersome steps such as immersion, settling, and drying, greatly shortening the testing cycle and improving testing efficiency, thus meeting the needs of online testing on large-scale production lines.

Description

Technical Field

[0001] This utility model relates to the field of airtightness testing technology, and in particular to a product airtightness testing device. Background Technology

[0002] In the manufacturing of 3C products, the casing is a key structure protecting the internal precision electronic components, and its airtightness directly affects the product's waterproof, dustproof performance and lifespan. If the casing leaks, moisture, dust, and other impurities can easily penetrate the interior, leading to problems such as short circuits and component aging. Therefore, rigorous airtightness testing of 3C product casings is an indispensable part of the production process.

[0003] Currently, some traditional airtightness testing methods still exist in the industry, requiring the test casing to be immersed in water or sprayed, and the airtightness is judged by observing whether bubbles or water stains seep in. While this method is simple and intuitive to operate, it has a long testing cycle (requiring multiple steps such as immersion, settling, observation, removal, and drying), resulting in low efficiency and making it unsuitable for the online testing needs of large-scale production lines. The drying process is not only time-consuming but also carries the risk of residual moisture damaging internal electronic components (for incompletely assembled products). Furthermore, this method struggles to accurately quantify leakage, resulting in highly subjective and poor repeatability results, and it cannot detect minute "slow leaks," easily leading to defective products flowing into subsequent stages. Utility Model Content

[0004] Based on this, the present invention provides a product airtightness testing device with a simple structure and convenient use. The upper plug is driven to press down by a lifting cylinder, so that the upper plug and the lower plug seal the top and bottom of the product respectively. Then, the air inlet connector is connected to the air inlet pipe by a push-pull cylinder to input positive pressure gas into the product. After observing the reading of the digital display air pressure regulating valve, it is determined whether the product is leaking. The whole process does not require cumbersome steps such as soaking, standing, and drying, which greatly shortens the testing cycle and improves the testing efficiency, and can meet the needs of online testing of large-scale production lines.

[0005] To achieve the objectives of this utility model, the following technical solution is adopted:

[0006] A product airtightness testing device, comprising:

[0007] The load-bearing components include an industrial computer, a bracket mounted on the top surface of the industrial computer, a lifting cylinder connected to the top of the bracket, an upper plug mounted at the end of the lifting cylinder, and a digital display air pressure regulating valve mounted on one side of the bracket.

[0008] A clamping assembly is installed on the top surface of the supporting component; the clamping assembly includes a fixed plate installed on the top surface of the industrial computer, a lower plug installed at one end of the top surface of the fixed plate, a floating plate floating above the fixed plate, and a fixture installed at one end of the top surface of the floating plate; the fixture is located above the lower plug and is used to clamp the product; an air inlet pipe is connected to one side of the product; the lower plug is used to seal the bottom end of the product, and the upper plug is used to seal the top end of the product; and

[0009] An air intake assembly is installed at one end of the clamping assembly; the air intake assembly includes a push-pull cylinder installed on the end of the floating plate away from the fixture, and an air intake connector connected to the piston rod of the push-pull cylinder; the output end of the air intake connector is used to connect to the air intake pipe, and the input end of the air intake connector is used to connect to the output end of the digital display air pressure regulating valve, and the input end of the digital display air pressure regulating valve is used to connect to the positive pressure air source.

[0010] The aforementioned product airtightness testing device has a simple structure and is easy to use. It uses a lifting cylinder to drive the upper plug to press down, so that the upper and lower plugs seal the top and bottom of the product respectively. Then, a push-pull cylinder drives the air inlet connector to connect to the air inlet pipe, and positive pressure gas is introduced into the product. The reading of the digital display air pressure regulating valve is then observed to determine whether the product is leaking. The entire process does not require cumbersome steps such as soaking, settling, and drying, which greatly shortens the testing cycle, improves the testing efficiency, and can meet the needs of online testing for large-scale production lines.

[0011] In one embodiment, the support component further includes positioning pins installed on opposite sides of the upper plug; positioning holes are provided on opposite sides of the fixture, and the positioning holes correspond one-to-one with the positioning pins.

[0012] In one embodiment, the fixture has a U-shaped clamping opening in the middle for accommodating and receiving the product.

[0013] In one embodiment, one end of the floating plate is provided with a through groove, and the upper plug and the lower plug are arranged opposite to each other about the through groove.

[0014] In one embodiment, the floating plate is slidably connected to the fixed plate through a guide post and guide sleeve structure. Support springs are evenly spaced around the floating plate corresponding to the upper and lower plugs. One end of the support spring abuts against the floating plate, and the other end of the support spring abuts against the fixed plate.

[0015] In one embodiment, the air intake connector is also slidably connected to a floating plate via a guide rail pair. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of a product airtightness testing device according to an embodiment of the present invention;

[0017] Figure 2 for Figure 1An exploded view of the product airtightness testing device shown;

[0018] Figure 3 for Figure 2 An exploded view of the product airtightness testing device shown from another perspective;

[0019] Figure 4 for Figure 2 A comparative schematic diagram of the clamping components, air intake components, and product in the product airtightness testing device shown;

[0020] Figure 5 for Figure 4 A comparative schematic diagram of the clamping components, air intake components, and product from another perspective in the product airtightness testing device shown;

[0021] Figure 6 for Figure 4 An exploded view of the clamping components in the product airtightness testing device shown.

[0022] Attached image annotations:

[0023] 10-Bearing component, 11-Industrial computer, 12-Bracket, 13-Lifting cylinder, 14-Upper plug, 15-Positioning pin, 16-Digital display air pressure regulating valve, 17-Solenoid valve, 18-Air source pressure regulating valve;

[0024] 20-Clamping assembly, 21-Fixing plate, 22-Lower plug, 23-Floating plate, 230-Through groove, 24-Jig, 25-Positioning hole, 26-Clamping opening, 27-Support spring;

[0025] 30-Intake assembly, 31-Push-pull cylinder, 32-Intake connector, 33-Guide rail pair;

[0026] 40 - Product, 41 - Intake pipe. Detailed Implementation

[0027] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0028] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0030] Please see Figures 1 to 6 This invention relates to a product airtightness testing device, comprising a support assembly 10, a clamping assembly 20 mounted on the top surface of the support assembly 10, and an air inlet assembly 30 mounted at one end of the clamping assembly 20. The clamping assembly 20 is used to clamp the product 40 to be tested, and an air inlet pipe 41 is connected to one side of the product 40.

[0031] The supporting component 10 includes an industrial computer 11, a bracket 12 mounted on the top surface of the industrial computer 11, a lifting cylinder 13 connected to the top of the bracket 12, an upper plug 14 mounted at the end of the lifting cylinder 13, positioning pins 15 mounted on opposite sides of the upper plug 14, and a digital display air pressure regulating valve 16 mounted on one side of the bracket 12. The output end of the digital display air pressure regulating valve 16 is connected to the air inlet component 30, and the input end of the digital display air pressure regulating valve 16 is used to connect to a positive pressure air source to deliver positive pressure gas into the interior of the product 40 to detect whether the product 40 is leaking.

[0032] Specifically, in this embodiment, a solenoid valve 17 and a gas source pressure regulating valve 18 are installed on the back of the industrial control computer 11; the digital display gas pressure regulating valve 16 is connected to a positive pressure gas source through the solenoid valve 17 and the gas source pressure regulating valve 18 to obtain positive pressure gas.

[0033] Furthermore, in this embodiment, the carrier component 10 also includes light curtains installed on opposite sides of the top surface of the industrial control computer 11.

[0034] The clamping assembly 20 includes a fixed plate 21 mounted on the top surface of the industrial computer 11, a lower plug 22 mounted at one end of the top surface of the fixed plate 21, a floating plate 23 floating above the fixed plate 21, and a fixture 24 mounted at one end of the top surface of the floating plate 23; the fixture 24 is located above the lower plug 22 and is used to clamp the product 40.

[0035] Specifically, one end of the floating plate 23 is provided with a through groove 230, and the upper plug 14 and the lower plug 22 are arranged opposite to each other about the through groove 230, so that the product 40 can pass through the through groove 230 and abut against the lower plug 22, so that the lower plug 22 seals the bottom end of the product 40.

[0036] In this embodiment, positioning holes 25 are provided on opposite sides of the fixture 24, and the positioning holes 25 correspond one-to-one with the positioning pins 15. The fixture 24 has a U-shaped clamping opening 26 in the middle, which is used to accommodate the product 40 to form a clamping effect.

[0037] Furthermore, in this embodiment, as Figures 4 to 6 As shown, the floating plate 23 is slidably connected to the fixed plate 21 through the guide post and guide sleeve structure. Supporting springs 27 are evenly spaced around the lower plug 22 on the floating plate 23. One end of the supporting spring 27 abuts against the floating plate 23, and the other end of the supporting spring 27 abuts against the fixed plate, so that the floating plate 23 is floating above the fixed plate 21.

[0038] The air intake assembly 30 includes a push-pull cylinder 31 mounted on the end of the floating plate 23 away from the fixture 24, and an air intake connector 32 connected to the piston rod of the push-pull cylinder 31; the output end of the air intake connector 32 is used to connect to the air intake pipe 41, and the input end of the air intake connector 32 is used to connect to the output end of the digital display air pressure regulating valve 16, such as... Figure 5 As shown.

[0039] Furthermore, the air intake connector 32 is also slidably connected to the floating plate 23 via the guide rail pair 33 to ensure smooth movement. In addition, the air intake connector 32 and the product 40 are always on the floating plate 23, keeping the height of the air intake connector 32 and the air intake pipe 41 consistent, thereby ensuring the airtightness of the connection between the air intake connector 32 and the air intake pipe 41.

[0040] In practical applications, the lifting cylinder 13 drives the upper plug 14 and positioning pin 15 to press down. The upper plug 14 abuts against the top of the product 40 and pushes the product 40 further down until the bottom of the product 40 abuts against the lower plug 22. At this point, the floating plate 23 compresses the support spring 25, the upper plug 14 seals the top of the product 40, and the lower plug 22 seals the bottom of the product, leaving only the air inlet pipe 41 exposed. Next, the push-pull cylinder 31 drives the air inlet connector 32 to connect with the air inlet pipe 41, and a certain flow rate of positive pressure gas is input into the product 40. The reading of the digital display air pressure regulating valve 16 is then observed. If the reading of the digital display air pressure regulating valve 16 remains stable, it indicates that there is no air leakage in the product 40, and the product 40 is a good product with good airtightness; conversely, if the reading of the digital display air pressure regulating valve 16 fluctuates, it indicates that there is air leakage in the product 40, and the product 40 is a defective product.

[0041] The aforementioned product airtightness testing device has a simple structure and is easy to use. The upper plug 14 is driven down by the lifting cylinder 13, so that the upper plug 14 and the lower plug 22 seal the top and bottom of the product 40 respectively. Then, the air inlet connector 32 is connected to the air inlet pipe 41 by the push-pull cylinder 31 to input positive pressure gas into the product 40. After observing the reading of the digital display air pressure regulating valve 16, it is determined whether the product 40 is leaking. The whole process does not require cumbersome steps such as soaking, standing, and drying, which greatly shortens the testing cycle and improves the testing efficiency, and can meet the needs of online testing of large-scale production lines.

[0042] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0043] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A product airtightness testing device, characterized in that, include: The load-bearing components include an industrial computer, a bracket mounted on the top surface of the industrial computer, a lifting cylinder connected to the top of the bracket, an upper plug mounted at the end of the lifting cylinder, and a digital display air pressure regulating valve mounted on one side of the bracket. A clamping assembly is installed on the top surface of the supporting component; the clamping assembly includes a fixed plate installed on the top surface of the industrial computer, a lower plug installed at one end of the top surface of the fixed plate, a floating plate floating above the fixed plate, and a fixture installed at one end of the top surface of the floating plate; the fixture is located above the lower plug and is used to clamp the product; an air inlet pipe is connected to one side of the product; the lower plug is used to seal the bottom end of the product, and the upper plug is used to seal the top end of the product; and An air intake assembly is installed at one end of the clamping assembly; the air intake assembly includes a push-pull cylinder installed on the end of the floating plate away from the fixture, and an air intake connector connected to the piston rod of the push-pull cylinder; the output end of the air intake connector is used to connect to the air intake pipe, and the input end of the air intake connector is used to connect to the output end of the digital display air pressure regulating valve, and the input end of the digital display air pressure regulating valve is used to connect to the positive pressure air source.

2. The product airtightness testing device according to claim 1, characterized in that, The load-bearing component also includes positioning pins installed on opposite sides of the upper plug; positioning holes are provided on opposite sides of the fixture, and the positioning holes correspond one-to-one with the positioning pins.

3. The product airtightness testing device according to claim 1, characterized in that, The fixture has a U-shaped clamping opening in the middle, which is used to fit and accommodate the product.

4. The product airtightness testing device according to claim 1, characterized in that, One end of the floating plate is provided with a through groove, and the upper plug and the lower plug are arranged opposite each other about the through groove.

5. The product airtightness testing device according to claim 1, characterized in that, The floating plate is slidably connected to the fixed plate through the guide post and guide sleeve structure. Support springs are evenly spaced around the upper and lower plugs on the floating plate. One end of the support spring abuts against the floating plate, and the other end of the support spring abuts against the fixed plate.

6. The product airtightness testing device according to claim 1, characterized in that, The air intake connector is also slidably connected to the floating plate via a guide rail pair.

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