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Principle analysis of different laser marking machines

by:J&D WATER     2020-02-24
Laser marking machine (Laser printer) It uses laser beam to mark the surface of various substances permanently. The effect of marking is to expose the deep material through the evaporation of the surface material, thus carving exquisite patterns, trademarks and characters. The laser marking machine is mainly divided: fiber laser marking machine, CO2 laser marking machine and UV laser marking machine, etc. At present, laser marking machines are mainly used in some occasions requiring finer and higher precision. Applied to electronic components, integrated circuits (IC) Electrical appliances, mobile phone communications, hardware products, tool accessories, precision instruments, glasses clocks, jewelry accessories, auto parts, plastic keys, building materials, PVC pipes, etc. . There are many kinds of laser marking machines, and the laser marking machines used in each industry will be different. Today, Shenzhen laser, a laser marking machine manufacturer, shares the principle analysis of different laser marking machines for you: Principle of fiber laser marking machine: fiber laser marking machine uses laser beam to mark the surface of various substances permanently. The effect of marking is to expose the deep material through the evaporation of the surface material, or to 'carve' the trace through the chemical and physical changes of the surface material caused by light energy, or to burn some of the material through light energy, show all kinds of patterns, characters, bar codes and other graphics that need to be etched. The so-called fiber laser marking machine means that the marking machine uses a fiber laser, which has a small volume (No water cooling device, using air cooling), Light is of good quality (Basic mode), Maintenance-free and other characteristics. Advantages of fiber laser marking machine: fiber laser marking machine is the most advanced laser marking equipment in the world today. It has the characteristics of good beam quality, small volume, fast speed, long working life, flexible and convenient installation and maintenance-free. Widely used in integrated circuit chips, computer accessories, industrial bearings, clocks and watches, electronic and communication products, aerospace and aviation devices, various auto parts, household appliances, hardware tools, molds, wires and cables, food packaging, the marks of figures and words in many fields such as jewelry, tobacco and military affairs, and mass production line operations. Principle of CO2 laser marking machine: CO2 laser marking machine (Carbon dioxide laser marking machine). It is a laser vibrating mirror marking machine using CO2 gas as the working medium. CO2 laser marking machine is a CO2 laser using CO2 gas as medium, charging CO2 and other auxiliary gases into the discharge tube to add high pressure on the electrode, and the discharge tube generates glow discharge to release the gas with a wavelength of 10. 64um laser, after amplifying the laser energy, it is scanned by vibrating mirror and F- After the Theta mirror is focused, under the control of the computer and the laser marking control card, the image, text, number and line can be marked on the workpiece according to the user's requirements. Advantages of CO2 laser marking machine: Carbon dioxide laser is used, which is a universal model, with back focusing mode, small volume and high degree of integration. This machine is suitable for marking most non-metallic materials, such as paper packaging, plastic products, label paper, leather cloth, glass ceramic, resin plastic, bamboo and wood products, PCB board, etc. CO2 laser is far infrared light band wavelength of 10. The 64um gas laser uses CO2 gas charged into the discharge tube as the medium to generate laser. When a high voltage is applied to the electrode, the discharge tube generates glow discharge, which can release the laser from the gas molecules, the laser energy is amplified to form a laser beam for material processing. Principle of UV laser marking machine: the reaction mechanism during UV laser processing is realized by photochemical ablation, I . e. the bonding between atoms or molecules is interrupted by laser energy, make it become small molecule gasification, evaporation. The focused light spot is extremely small and the processing heat affected zone is very small, so ultra-fine marking and special material marking can be carried out. Advantages of UV laser marking machine: Nowadays, with the rapid development of laser equipment and the improvement of power of UV laser marking machine, UV laser marking machine has been applied to ultra-fine processing high-end market, marking on the surface of packaging bottles of iPhone, cosmetics, medicines, food and other polymer materials; Marking and scribing of flexible PCB board; Micropore and blind hole processing of silicon wafer; LCD liquid crystal glass, glassware surface, metal surface coating, plastic buttons, electronic components, gifts, communication equipment, building materials and other fields.
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