With a variety of LOGO, patterns, text demand, the market has emerged a special machine for marking – fiber laser marking machine.Fiber laser marking machine is a laser with rare earth element doped glass fiber as gain medium, fiber laser marking machine has become a hot research in laser physics in recent years, it is agreed that it is possible to replace the solid state laser in a comprehensive new generation of products.Fiber lasers can be developed on the basis of fiber amplifiers: under the action of pump light, high power density is easily formed in the fiber, resulting in the “particle number inversion” of the laser energy level of the laser working substance. When a positive feedback loop is properly added (to form a resonator), the laser oscillation output can be formed .Fiber laser marking machine is the use of laser beam in a variety of different material on the surface of permanent marks.Marking effect is through the evaporation of the surface material exposed deep material, or through light energy to cause the physical changes of the surface material and “engraved” marks, or through light energy to burn part of the material, showing the need to etch patterns, text, bar codes and other graphics.
What is fiber laser marking machine
Fiber laser marking machine uses laser beam to make permanent marks on the surface of various substances.Marking effect is through the evaporation of the surface material to reveal the deep material, thus carving out exquisite patterns, trademarks and words.
The advantages of fiber laser marking machine
1. It can process a variety of metals and a small part of non-metallic materials.Especially for high hardness, high melting point, brittle materials marking more advantages.
2, belongs to non-contact processing, no damage to the product, no tool wear, good quality marking.
3. The laser beam is thin, the processing material consumption is small, and the processing heat affected zone is small.
4, High processing efficiency, computer control, easy to achieve automation.
Product classification of fiber laser marking machine
Fiber laser marking machine
Mainly composed of laser, vibration lens, marking card three parts, the use of fiber laser laser production of marking machine, beam quality is good, the output center of 1064nm, the life of the whole machine in about 100,000 hours, relative to other types of laser marking service life is longer, electro-optical conversion efficiency is more than 28%,Compared with other types of laser marking machine, the conversion efficiency of 2%-10% is great, and the performance is outstanding in energy saving and environmental protection.
CO2 laser marking machine
The CO2 laser is a gas laser with the wavelength of 10.64um in the far-infrared optical frequency band. The CO2 gas is filled into the discharge tube as the medium to generate the laser. When a high voltage is applied to the electrode, glow discharge is generated in the discharge tube, so that the gas molecules can release the laser.
UV laser marking machine
UV laser marking machine configuration deep UV laser, imported high-speed scanning vibrator system;Due to the UV laser marking machine focusing spot is very small, and the processing heat impact zone is very small, so the UV laser marking machine can be super fine marking, special material marking, UV laser marking machine is the first choice for customers who have higher requirements for the marking effect.UV laser marking machine has high electro-optic conversion rate, long service life of nonlinear crystal, stable operation of the whole machine, high positioning accuracy, high operating efficiency, modular design is easy to install and maintain, etc.In addition, it can be equipped with two dimensional automatic workbench to realize continuous marking or large scale marking.
Green light laser marking machine
Green light laser marking machine is the most advanced wavelength of 532nm laser pumping technology (side pumping or end pumping) developed, customers can choose the pump type according to the characteristics of their own products, this kind of laser electro-optical conversion rate is higher, can reach 30% or more than 45%, and the whole machine low power consumption, protection is very good.He USES a wide range: tag a variety of metals (such as stainless steel, copper alloy, etc.) and various non-metallic materials, such as glass, stone, ceramics, electroplating buttons, gold-plated devices, etc.) of marking, and optical device (such as light word lens, etc.) or calibration of marking, also suitable for ceramic punching, high-temperature PCB molding directly.Compared with similar products with a very high cost performance, more suitable for application in some requirements of finer, higher precision occasions.Compared with similar products, it has a very high cost performance.His price is even higher.
Application industry of fiber laser marking machine
There are a lot of people on the laser marking machine is not very understand, so it will not be clear what will be used in the industry, also do not know their own industry will not be used, in fact, laser marking machine is very widely used, in terms of the concept,Useful to marking can use to laser marking machine, but the specific or want to be decided on material, some material need only do not need to use laser printing up, because the laser is fine marking, if used in pure rough workpiece is a bit of overkill, but how to know what products suitable for laser marking machine, it is to illustrate the;In the hardware industry, spanner, measuring tools, sanitary ware, stainless steel tableware, medical equipment, cases, bags, gift industry also has many, such as metal gifts, wooden boxes, U disk, notebook, watch and instrument industry of metal case, table bottom, glasses frame, instrument and panel,In addition, there are packaging industry and electronic communication industry of mobile phone shell, electronic components of laser marking.So we know through these laser marking machine is has a broad market prospect, and has yet to go to the market development, mining, so the laser marking machine enterprises should set an example, completes the quality, to open the market, for customers to solve the problem for a profit, so in the future there will be a larger development space and better market prospects.So do a good job in the present, look to the future is to cater to the market, a good start to create performance
Future development trend of fiber laser marking machine
(1) The improvement of the performance of fiber laser itself: how to improve the output power and conversion efficiency, optimize the beam quality, shorten the gain fiber length, improve the stability of the system and make it more compact is the focus of future fiber laser field research.
(2) Development of new fiber lasers: in the time domain, ultra-short pulse mode-locked fiber lasers with smaller duty cycle have always been the focus of research in the field of laser, and high power femtosecond pulsed fiber lasers have been the long-term pursuit of the goal.In the frequency domain, the broadband output and tunable fiber laser will become a research hotspot.
The research of fiber laser has been started since the end of 1980s. Because of its ability to produce ultra-short pulses, it has a very broad application prospect. Therefore, countries around the world have shown great enthusiasm for the research of fiber laser.Compared with other types of laser, fiber laser has many advantages, such as high reliability, simple structure, low price and high conversion efficiency.
Domestic research in this field is also relatively early, no matter in theory or experiment, have made a lot of research results.However, compared with abroad, there is still a big gap.Especially, the research on high performance fiber laser is relatively few, and the practical work is far from enough, and the effect is not very ideal.Therefore, it is necessary to further strengthen the research of passive mode-locked fiber lasers.
In 1963, Snitzer reported the fiber laser doped with Nd, 10 for the first time, thus opened the upsurge of research on fiber laser.Especially in recent years, with the progress made in fiber design and fabrication, the output of fiber lasers is constantly increasing, and the CW output power of a single fiber device has risen from 100 watts to kilowatts.At the same time, the improved fabrication technology of the high quality fiber with large cladding diameter and large numerical aperture makes it easy to achieve effective coupling with the power of the secondary pump.
The most significant advantage of fiber lasers is their high pumping efficiency.Under normal conditions, the pump conversion efficiency is 70%-75%, much higher than that of industrial two-stage pumped solid-state lasers (DPSSL).This high conversion efficiency reduces the cooling and power requirements of the laser system, allows for a more compact structure than conventional solid-state lasers, and provides a very robust and highly reliable package design with an all-fiber structure.Moreover, fiber lasers can significantly enhance the quality of the output beam.
Another important advantage is that fiber laser technology can greatly extend device life (compared to DPSSL), which has led to increased investment by industrial laser companies focusing on fiber lasers, as long-term reliability work is important at the application level.Fiber laser also has other advantages: because the laser medium of fiber laser itself is the guiding wave medium, the miscombination efficiency is high;The fiber laser can be easily connected with the fiber transmission system efficiently.The fiber core can be very thin to achieve high power density;The fiber laser has very high conversion efficiency and very low threshold because of its good heat dissipation performance.The output wavelength of fiber laser covers a wide range from 400nm to 3400nm, which can meet the needs of various applications, and has a good application prospect in industry and commerce, communication, military, medicine and other fields.
Daily maintenance of fiber laser marking machine
1. When the machine is not working, the power supply of the marking machine and computer should be cut off.
2. When the machine is not working, cover the field lens to prevent dust from polluting the optical lens.
3. The circuit is in high voltage state when the machine is working, non-professionals, do not overhaul when the machine is started, so as to avoid electric shock accident.
4. The power supply should be cut off immediately if any fault occurs to the machine.
5. If the equipment is used for a long time, the dust in the air will be adsorbed on the lower surface of the focusing mirror, which will reduce the power of the laser and affect the marking effect.Severe cases cause optical lens to absorb too much heat so that the burst.When the marking effect is poor, the focusing mirror surface should be carefully checked for contamination.
6. If the surface of the focusing lens is contaminated, remove the focusing lens and clean its lower surface.
7. Take special care to remove the focusing lens and avoid damage or injury;Also, do not touch the focal lens with your hands or other objects.
8. The cleaning method is to mix anhydrous ethanol (analytical pure) and diethyl ether (analytical pure) in a ratio of 3:1. Infiltrate the mixture with a long fiber cotton swab or lens paper, and gently scrub the lower surface of the focusing lens.
9. In the process of marking machine, do not move the marking machine, in order to avoid damage to the machine.
10. The marking machine should not cover the heap or put other items, so as not to affect the heat dissipation effect of the machine.