The air tightness qualification rate of mobile phones has always been a headache for mobile phone manufacturers. As an indispensable daily electronic product, mobile phones must have a waterproof rating of IP67 to function normally in a relatively special environment and avoid damage to the internal parts of the mobile phone.When it comes to air tightness testing of mobile phones, we have to start with the waterproof structure of the mobile phone.The appearance of the new generation of smartphones is almost thin, smart, and full-screen touch. Its waterproof structure must be considered in all aspects of production, and air tightness testing is the last step before the mobile phone leaves the factory.
Traditional air tightness testing requires special treatment and then immersion in water. This testing method will inevitably cause damage to the mobile phone.Hirays Technology has been committed to the research and development of air tightness testing. It has done a lot of research on the air tightness testing of mobile phones and developed an air tightness detector that is non-destructive to mobile phones.
Dual station air tightness detector for mobile phones
1. Analysis of the air-tight structure principle and detection difficulties of mobile phones
1. During the production of mobile phones, different parts will be waterproofed. For example, in the microphone and earpiece parts, due to the need to conduct sound, special processes that allow air molecules to pass through but not water molecules must be used;
2. The waterproof technology of mobile phones also requires different isolation solutions for different parts. The outer casing is sealed with silicone rubber (rings, pads) and waterproof adhesive, acoustic waterproofing (waterproof and breathable membrane), and further uses circuit board waterproofing (nano material coating) and other methods to achieve air tightness;
3. The combination of so many waterproof processes will inevitably lead to various non-waterproof problems, and this problem is also one of the difficulties in mobile phone air tightness testing.Traditional detection methods are not suitable for air tightness testing of precision-structured mobile phones, and how to solve detection difficulties is also one of the important problems in the mobile phone industry.
2. Breakthrough in Difficulties in Air Tightness Detection of Mobile Phones
Air tightness detector for mobile phones
1. There are different detection methods for different types of mobile phones. Hirays Technology has specially customized several molds according to the appearance characteristics of the mobile phones. Put the mobile phone into the mold. During the test, the upper and lower molds will be closed to form a sealed space. Gas without impurities is then filled into the mold. The detector will judge the air tightness of the mobile phone based on the air pressure inside the mold;
Air tightness testing mold tooling details for mobile phones
2. For dual-channel testing of mobile phones, there is also a special air-tightness detector that integrates dual-channel tooling and detector. The multi-channel air-tightness detector solves the efficiency problem of simultaneous air-tightness testing of multiple mobile phones, making the detection faster and the results more accurate;
Details of dual-channel air tightness testing tooling for mobile phones
3. Before starting the test, you must first connect the power supply and air source of the air tightness tester, and connect the test port to the mobile phone waterproof test tooling. Start the mobile phone air tightness tester with both hands, and then the air tightness test goes through the process of inflation, voltage stabilization, and testing to obtain the air leakage rate;
4. The air tightness detector can determine the waterproof level of the mobile phone based on the leakage on the previous device. If it is less than the upper limit of leakage, the airtightness of the mobile phone is qualified. If it is greater than the upper limit of leakage, it is deemed to be unqualified.The entire test process only takes about ten seconds, with high detection efficiency, high accuracy, low damage rate to mobile phones, and low cost.
3. Advantages and parameter list of mobile phone air tightness testing instrument
1. High-sensitivity pressure sensing and adjustment unit, combined with advanced differential pressure software algorithm, the minimum resolution can reach 0.1Pa. This algorithm has obtained a national patent.
2. Patented technology independently developed by Hirays,"IVT pneumatic sealing valve island", greatly improving the test accuracy, ensuring the stability of the instrument, and the inflation speed is also greatly improved.
3. Multiple test functions: The instrument integrates two pressure forms, positive and negative, and 8 test methods: two pressure forms and five test methods can be programmed into more than 20 test functions.
4. It has more than 200 groups of subroutines. Each group of subroutines can be programmed independently, single selected and combined to meet various complex testing requirements.
5. Full-touch large-screen intelligent operating system, graphical UI design based on the detection process, the operation interface is simple and clear, easy to teach and learn.
6. A variety of pressure adjustment components and ranges are optional, with a wide air pressure range (-80KPA&-1MPa) optional.The optional electronic pressure regulating valve can realize multiple sets of pressure sequential tests.
7. Multiple communication interfaces: built-in RS232 serial port, RJ45 network port, USB communication interface, LTP external I/O control port, supporting multiple communication protocols.
8. Optional barcode scanning function and printer are available to facilitate product data management and quality traceability. The instrument history record can reach up to 200,000 items and can be exported to the computer in batches.
9. The standard volume identification function can automatically identify the volume of the sample to be tested, and measure and judge the leakage rate in a volumetric manner.
10. Ultra-high stability and ease of use have passed the rigorous test of the market.
11. A variety of accessories are available, including inflatable bypass, quick connector, and standard leak hole. At the same time, the instrument supports third-party calibration and can issue a calibration report.
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