The air tightness qualification rate of mobile phones has always been a headache for mobile phone manufacturers, so the air tightness testing of mobile phones has received widespread attention. In this context, a new generation of air tightness testers has been produced, which is an air tightness testing equipment dedicated to waterproof testing of mobile phones.

When it comes to air tightness testing of mobile phones, we have to start with the waterproof structure of mobile phones.

The maturity of the new generation of waterproof technology allows mobile phones to add waterproof functions without being as bulky as three-proof phones. Flagship mobile phones represented by Sony series mobile phones and Samsung flagship S7/NOTE7 have maturely applied the highest level of IP68 waterproof function. Apple's latest iPhone 7 also supports IP67 waterproof, and watches support IP6850m waterproof, Apple has always been a technological benchmark and is expected to lead the follow-up of domestic brands next year. Waterproofing is also expected to be fully extended from mobile phones and watches to wearable and other 3C products, and it can also make great achievements in many fields such as automobiles and medical care.It is expected that domestic brands will fully participate in waterproof innovation next year, and the tens of billions of market explosion is imminent.To ensure the waterproof qualification rate of mobile phones, air tightness testing equipment can be used.

  Compared with industrial applications, the requirements for all aspects of the waterproof process of mobile phones (design, manufacturing, and testing) are more stringent and the air tightness testing is more complex.From the overall situation, to achieve high-level waterproofing technology (IPX6 or above) requires the cooperation of a variety of processes, and the waterproofing methods are diverse for different parts.Some local processes are quite different from the traditional concept of waterproofing. For example, in the microphone and earpiece parts, due to the need to conduct sound, special processes must be used that can only allow air molecules to pass through, but not water molecules.Generally speaking, the waterproof technology of smartphones adopts different isolation solutions for different parts. First, the outer casing is sealed with silicone rubber (rings, pads) and waterproof adhesive, acoustic waterproofing (waterproof and breathable membrane), and further uses various methods such as circuit board waterproofing (nano material coating) to achieve high-level waterproofing and air-tightness effects.

The combination of so many waterproofing technologies will definitely lead to various non-waterproofing problems. How to solve the difficulties in this aspect has become an important research topic in the mobile phone industry.Shenzhen Hiraysi Automation Technology has been committed to the research and development of air tightness detectors for ten years.Recently, special research has been conducted on the waterproof detection and air tightness detection technology of mobile phones.And we have done a lot of mobile phone air tightness and waterproof level testing experiments.

After a lot of experiments and practice, mobile phone air tightness detection technology research and summary.A non-destructive compressed air air tightness tester is developed specifically for mobile phone waterproof level testing and air tightness testing.

This mobile phone air tightness detector is equipped with a barcode scanner and a remote formulation system.

The mobile phone air tightness detector uses imported pressure sensors and a highly sensitive large-screen touch screen.The test accuracy can reach 0.1pa, and the positive and negative pressure air tightness detection system is integrated, which can be fully applied to all aspects of mobile phone waterproof detection difficulties.The pressure test range is -80 to 1000Kpa.

Waterproof detection method of mobile phone air tightness tester:

1. Connect the power supply and air source of the air tightness tester, and connect the test port to the mobile phone waterproof test tooling. The tooling needs to be made according to the size of the mobile phone.

2. Start the mobile phone air tightness tester with both hands, and then the air tightness test goes through the process of inflating, stabilizing, and testing, and then the air leakage rate is obtained.

3. The air tightness tester can determine the waterproof level of the mobile phone based on the leakage upper limit of the device. If the leakage limit is less than the upper limit, it is considered qualified, and the size is considered unqualified.The whole test process only takes more than 10 seconds