The air tightness qualification rate of mobile phones has always been a headache for mobile phone manufacturers, so the air tightness detection of mobile phones has been widely concerned. Under this background, a new generation of air tightness detector, air tightness detection equipment dedicated to mobile phone waterproof detection, has been produced.
When it comes to the air tightness detection of mobile phones, we have to start with the waterproof structure of mobile phones.
With the maturity of new generation waterproof technology, mobile phones need not be as bulky as triple waterproof machines while adding waterproof functions. The flagship mobile phones represented by Sony series mobile phones and Samsung flagship S7 / Note7 have matured and applied the highest level of IP68 waterproof function. Apple's newly released iPhone 7 also supports IP67 waterproof function, and its watch supports IP68 50m waterproof function. Apple has always been a technology vane, It is expected to lead the follow-up of domestic brands next year, and waterproof products can be extended from mobile phones and watches to wearable 3C products, and can also make great achievements in automobile, medical and other fields. It is expected that domestic brands will fully participate in waterproof innovation next year, and the market of tens of billions will break out soon. Air tightness testing equipment can be used to ensure the qualified rate of mobile phone waterproof.
& emsp;& amp; emsp; Compared with the industrial application, the requirements of each link (design, manufacture and test) of the waterproof technology of mobile phone are more stringent, and the air tightness test is more complex. From the overall situation, to achieve high-level waterproof technology (ipx6 or above), need a variety of processes, different parts, waterproof means with diversity. Some local technologies are quite different from the traditional waterproof methods. For example, in the microphone and earpiece, due to the need to conduct sound, the special technology that can only allow air molecules to pass through, but not water molecules to pass through, must be used. Generally speaking, the waterproof technology of smart phones adopts different isolation schemes in different parts. First, the shell is sealed with silicone rubber (ring, pad), waterproof adhesive, acoustic waterproof (waterproof and breathable diaphragm), and then the circuit board is waterproof (nano material coating) and other ways to achieve high-level waterproof effect and air tightness effect.
So the combination of so many waterproof technology, will certainly lead to a variety of Pro non waterproof problems, such as solving the difficulties in this area, which has become an important research topic in the mobile phone industry. In the past ten years, Shenzhen Harris automation technology has been committed to the research and development of air tightness detector. Recently, we have done special research on the waterproof detection and air tightness detection technology of mobile phones. And do a lot of mobile phone air tightness, waterproof grade test experiments.
After a lot of experiments and practice, the research and summary of mobile phone air tightness detection technology. A non-destructive compressed air tightness tester specially used for mobile phone waterproof grade testing and air tightness testing is developed.
This mobile phone air tightness detector is equipped with barcode scanner and remote development system.
The air tightness detector of mobile phone adopts imported pressure sensor and high sensitive large screen touch screen. The test precision can reach 0. Moreover, 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 1000 kPa
Air tightness tester for mobile phoneThe waterproof test method of the system is as follows
1、 Connect the power supply and air source of the air tightness tester, and connect the test port to the waterproof test tooling of the mobile phone. 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 flushing, 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 according to the upper leakage limit of the device. If it is less than the upper leakage limit, it is qualified, and the size is unqualified. The whole test process is more than 10 seconds