Application of laser marking technology in mobile phone manufacturing industry

Laser marking is to print various symbols, characters, patterns, etc., with extremely fine light spots, and the size of the light spots can be in the order of microns. It has a deeper meaning for micro-processing or anti-counterfeiting.

The focused ultra-fine laser is like a sharp blade, which can remove the material on the surface of the object point by point. The big advantage is that the marking process is non-contact processing, which will not cause negative scratches and friction, and will not cause extrusion or crushing. Therefore, the items to be processed will not be damaged. After the laser beam is zoomed again, the spot becomes smaller, and the resulting thermal effect area is small, processing, so it can complete some conventional processes that cannot be completed and cannot be achieved.

Laser processing can realize any form of sheet cutting with the help of modern CAD/CAM software. The use of laser processing not only has high processing speed, high efficiency, and low cost, but also avoids mold replacement and shortens production. Preparation time period. It is easy to realize continuous processing, the laser beam transposition time is short, and the production efficiency is improved. It can be installed alternately for a variety of workpieces. When a workpiece is processed, the completed parts can be removed and the workpiece to be processed can be installed to realize parallel processing, reducing installation time and increasing laser processing time. Laser cutting has become the technological development direction of modern metal processing due to its high speed, high quality, energy saving and environmental protection. In laser processing applications, laser cutting accounts for 32% of the market share. Compared with other cutting methods, the big difference between laser cutting is that it has the characteristics of high speed and high adaptability. At the same time, it also has the advantages of small kerf, small heat-affected zone, good cutting surface quality, no noise during cutting, good verticality of the kerf edge, smooth cutting edge, and easy automatic control of the cutting process. When laser cutting the plate, no mold is needed, which can replace some punching processing methods that require the use of complex and large molds, which can greatly shorten the production cycle and reduce the cost.

Sheet metal processing is a key technology that sheet metal technicians need to master, and it is also an important process for sheet metal product forming. It includes traditional cutting and blanking, blanking, bending and forming, etc. methods and processes, as well as various cold stamping die structures and process parameters, various equipment working principles and operating methods, and new stamping technologies and new processes. . The sheet metal processing parts of agricultural machinery products generally use 4-6mm steel plates. There are many types of sheet metal parts and they are updated quickly. The traditional sheet metal processing parts of agricultural machinery products usually use the punching method, and the mold loss is large. Usually a large agricultural machinery manufacturer is used for The warehouse for mold storage is nearly 300 square meters. It can be seen that if the processing of parts still stays in the traditional way, it will seriously restrict the rapid upgrading of products and technological development, and the advantages of laser flexible processing are reflected.

70% of the mobile phone processing and manufacturing links are applied to laser technology and laser manufacturing equipment. Especially in recent years, the development of high-power, high-energy ultraviolet marking machines, deep ultraviolet and ultrafast laser processing technology has promoted the development of smart phone manufacturing technology. This is related to the nature of laser technology and the nature of precision manufacturing of mobile phones. On the one hand, due to the outstanding characteristics of lasers such as high power density, good directionality, cleanliness, and environmental protection, the trend of laser processing technology to replace traditional processing technology is accelerating. Its micro-processing advantages are in laser welding machines, laser marking machines, and laser cutting. The advantages of machine and other aspects are very obvious. On the other hand, mobile phone processing is the crystallization of a precision manufacturing technology that requires micro-processing manufacturing equipment.

Laser drilling is one of the important mobile phone processing applications. The laser focus spot can be focused on the order of a wavelength, and high energy can be concentrated in a small area. It is especially suitable for processing micro and deep holes. The small aperture is only a few microns, and the hole depth to aperture ratio can be greater than 50 microns. Laser perforation can be used for PCB board perforation, shell earpiece and antenna perforation, earphone perforation, etc. in mobile phone applications. It has the advantages of high efficiency, low cost, small deformation, and wide application range. The mobile phone focuses on more than 200 parts in one palm, and its processing and manufacturing technology can be regarded as one of the most difficult manufacturing technologies at the time. In a space with a half-finger slightly wider, one finger longer, and one centimeter high, more than 200 parts such as LPC, camera, LCD, LCD screen, circuit board, antenna, etc. are processed, inlaid, and integrated together. The precision is very high. Laser technology is an important technology that promotes the rapid rise of China's mobile phone manufacturing industry.

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