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Air tightness test case of mobile phone back shell

In the air tightness detection of various parts of the mobile phone, the mobile phone camera is the top priority of the air tightness detection. Aiming at the air tightness protection of the mobile phone camera, the back shell of the mobile phone camera is one of the key points for manufacturers to carry out air tightness detection. When leaving the factory, manufacturers often detect the air tightness of the back shell of mobile phone camera. The traditional air tightness detection has many limitations in practical operation. Harris technology has made a lot of breakthroughs in the air tightness test of various components of mobile phones and the air tightness test of the whole mobile phone, which is not only reflected in the technology, but also more mature in the scheme. This time, we will share the air tightness detection of mobile camera back shell, hoping to help you.

Air tightness detector of mobile phone camera back shell

1、 Appearance of mobile phone camera back shell and display of detection difficulties

1. The back shell of mobile phone camera is a regular cuboid, which is made of black waterproof shell material. There are three rows of air holes in the middle and upper part of the back shell surface of mobile phone camera;

Mobile camera back shell

2. The shape of mobile phone camera back shell is high precision, so the traditional detection method is not suitable, and how to solve the detection difficulty is one of the important problems.

2、 Breakthrough and process of mobile camera back shell detection

1. For different models of mobile phone camera back shell, there are different detection methods. According to the shape characteristics of the back shell of mobile phone camera, Harris technology has customized a special mold to put the back shell of mobile phone camera into the mold. Because there are three air holes on the surface of the back shell of mobile phone camera, as long as the back shell of mobile phone camera is placed upward into the mold, the upper mold will block the air hole, During the detection, the instrument will fill gas into the back shell of mobile phone camera through the upper mold;

Details of tooling and die for air tightness detection of mobile phone camera back shell

Details of air tightness detection of mobile camera back shell

2. During the detection, as long as the mobile phone camera back shell is placed in the mold, the program is set, and the air outlet of the upper mold is closed. When the instrument is started, it will automatically inflate into the air outlet above the mobile phone camera back shell, and the air pressure of the instrument will slowly rise. When the air pressure is charged to the set value, the interior of the high voltage protection device will be in a constant state, At this time, the induction tube will determine the flow value to detect whether the internal air flow of the device meets the standard.

3、 Parameter table of air tightness tester for mobile camera back shell

Air tightness detector display of mobile phone camera back shell

1. High sensitivity pressure sensing and regulating unit, combined with advanced differential pressure software algorithm, the minimum resolution can reach 0.1pA, which has won the national patent.

2. The patented technology independently researched and developed by Harris, & quot; IVT pneumatic seal valve island;, Greatly improve the test accuracy, ensure the stability of the instrument, inflation speed has also been greatly improved.

3. Multiple test functions: the instrument integrates two positive and negative pressure forms and eight test methods: two pressure forms and five test methods can be written into more than 20 test functions.

4. It has more than 200 groups of subroutines. Each group of subroutines can be programmed independently, selected and combined to meet various complex test requirements.

5. Full touch large screen intelligent operating system, graphical UI design based on detection process, simple and clear operation interface, easy to teach and learn.

6. A variety of pressure regulating components and ranges are available. Wide range of air pressure (- 80kPa & amp; mdash; 1MPa) optional. Selecting electronic pressure regulating valve can realize multi group pressure sequence test.

7. Multiple communication interfaces: built in RS232 serial port, RJ45 network port, USB communication interface, LTP external I / O control port, supporting a variety of communication protocols.

8. Bar code scanning function and printer can be purchased to facilitate product data management and quality traceability. Up to 200000 historical records of the instrument 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 the way of volume.

10. Ultra high stability, and ease of use, after a rigorous test of the market.

11. A variety of accessories are available, including inflatable bypass, quick connector and standard leak. At the same time, the instrument supports third-party calibration and can issue calibration report.

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