Principle of fiber laser marking machine: Fiber laser marking machine uses laser beam to make permanent marks on the surface of various materials. The effect of marking is to “carve” traces through the evaporation of the deep layer of the surface material, or through the chemical and physical changes of the surface material caused by light energy, or to burn off part of the material through light energy to show the pattern to be etched , Text, graphics and other categories of graphics. The so-called fiber laser marking machine means that the marking machine uses a fiber laser. The fiber laser has the characteristics of small size (no water cooling device, air cooling), good light quality (base mode), and maintenance-free.
Fiber laser marking machine is mainly composed of fiber laser, high-speed scanning galvanometer, marking software, industrial computer, cabinet and other components. The fiber laser is the main core component.
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 size, fast speed, long working life, flexible and convenient installation, and maintenance-free. Widely used in integrated circuit chips, computer accessories, industrial bearings, watches, electronic and communication products, aerospace devices, various auto parts, home appliances, hardware tools, molds, wires and cables, food packaging, jewelry, tobacco and military affairs, etc. Field graphics and text marking, and mass production line operations.
Principle of CO2 laser marking machine: CO2 laser marking machine is carbon dioxide laser marking machine (CO2 is carbon dioxide). It is a laser galvanometer marking machine using CO2 gas as the working medium. The CO2 laser marking machine is a CO2 laser that uses CO2 gas as the medium. The CO2 and other auxiliary gases are charged into the discharge tube and high voltage is applied to the electrode. A glow discharge is generated in the discharge tube, which causes the gas to release a laser with a wavelength of 10.64um. After the energy is amplified, scanned by the galvanometer and focused by the F-Theta lens, under the control of the computer and the laser marking control card, the workpiece can be marked with images, characters, numbers, and lines according to user requirements.
CO2 laser marking machine composition: CO2 laser marking machine is mainly composed of CO2 laser, 10.64 field lens, 10.64 beam expander, CO2 laser power supply, scanning galvanometer, control computer, laser control card, laser control software, laser machine frame, Laser circulating water system, circuit control system and other components.
This machine is suitable for marking most non-metallic materials, such as the paper packaging of CO2 laser marking machine, using carbon dioxide laser, which is a general model, rear focus mode, small size, and high degree of integration. , Plastic products, label paper, leather fabrics, glass ceramics, resin plastics, bamboo and wood products, PCB boards, etc. The CO2 laser is a gas laser with a far-infrared light wavelength of 10.64um. It uses CO2 gas to be charged into the discharge tube as the generated laser medium. When a high voltage is applied to the electrode, a glow discharge is generated in the discharge tube to make gas molecules The laser is released, and the laser energy is amplified to form a laser beam for material processing.
Semiconductor laser marking machine
The principle of semiconductor laser marking machine: The working principle of laser marking by semiconductor laser pumped all solid-state lasers (DPSSL) is to use high-power semiconductor quantum transistors instead of gas lamp pumped solid-state crystals as gain medium laser resonators, so that they can pass through The design and establishment of the entire laser marking process, operating procedures and quality standards from re-inspection of raw materials, production, process inspection, final assembly debugging to final product general inspection.
Semiconductor laser marking machine composition: mainly composed of four systems: optical system, circuit system, water system and control system. The optical path system is mainly composed of red light, total reflection, half reflection, module, Q, field lens, beam expander, scanning, etc. The circuit system is mainly composed of control circuit (control box), laser power supply, Q power supply, and scanning power supply. The control system is mainly composed of scanning galvanometer, computer, control software (board card), etc. It is mainly composed of a water tank and a water pipe, forming a circulating waterway.
The advantages of semiconductor laser marking machine: good laser beam pattern, high electro-optical conversion efficiency, low power consumption, and maintenance-free; some photoelectric measurement manufacturers have changed the laser light source in the measurement equipment from the original He-Ne laser to a diode laser. In order to obtain the best machine life (He-Ne laser life is generally 10 ^ 4 HR, while diode laser life is 10 ^ 5 HR, which is ten times the difference), it is especially suitable for shortened operations on site; the switch can be achieved in an instant to facilitate communication use. And the semiconductor laser marking machine stabilizes quickly when it is turned on, and it is very suitable to modulate its output with a circuit, and the pulse wave modulation method can be used to measure the distance (while the He-Ne laser marking machine must be turned on for 30 minutes before it is stable In the end, this point is inferior to the semiconductor laser marking machine); use the III/V group in the periodic table, such as gallium oxide and other compounds to replace the diode laser, when the current passes through the pn interface, the semiconductor laser Changing the ratio of the combined elements can change different energy intervals, different energy intervals, provide different output wavelengths, and have infrared and red wavelengths. It is easy to cooperate with various sensors in communication and measurement to obtain a wide range of Purpose; simple and convenient operation, high precision marking quality; mechanical properties: compact structure, sturdy, small size.
YAG laser marking machine
YAG laser marking machine series prototype has the highest cost-effective high-end product-semiconductor laser marking machine. In recent years, the reduction in replacement manufacturing costs has replaced lamp-pumped laser marking machines as the first choice for laser processing users. The use of semiconductor laser marking machines can greatly save power and consumables in later maintenance. Obtaining a better laser marking effect can improve equipment reliability and greatly reduce maintenance.
Advantages of YAG laser marking machine:
- Light saving: The life of semiconductor diodes is as long as 10,000 hours. Based on eight hours of work per day, it can be up to three years without replacing consumables, while the life of krypton lamps is only a few hundred hours. Therefore, semiconductor laser marking machines can be called free Maintenance system.
- Power saving: The semiconductor laser marking machine is only about 2KW, while the lamp-pumped laser marking machine needs about 6KW, that is, the semiconductor laser marking machine can save 4 kWh of electricity per hour, according to the industrial electricity consumption of 1 kWh per hour. It is calculated that for the same working hour, the semiconductor laser marking machine will save 4 yuan in electricity costs than the lamp pumped laser marking machine for every working hour.
- Better marking effect: the monochromaticity of the laser produced by the semiconductor pump is better, the laser mode is better, the spot after the laser is focused is smaller, the energy is more concentrated, and a better marking effect can be obtained, so the semiconductor laser The marking machine can make the process effect that the lamp pumped laser marking machine cannot achieve.
- Maintenance-free: Lamp-pumped laser marking machine needs to change the krypton lamp frequently, and re-adjust the light path every time the lamp is changed. The semiconductor laser marking machine is maintenance-free, which greatly increases the stability and reliability of the equipment and reduces the workload of daily maintenance.
- Other savings that are not accurately calculated: The lamp-pumped laser marking machine is bulky, operating noise, and a lot of cold water opportunities produce more displacement, especially in summer, where the ambient temperature is higher, and these redundant displacement workers work The environment is worse, or more air conditioning systems are needed to adjust the temperature of the working environment, which increases production costs.
