In recent years, there have been more and more applications of laser marking machines in various fields. Laser marking machine technology can be applied to various materials, including plastics and rubbers, metals, silicon wafers, and so on. Compared with traditional mechanical engraving, chemical corrosion, screen printing, ink printing and other methods, laser marking has low cost, high flexibility, and can be controlled by a computer system. However, the laser acts on the surface of the workpiece to produce a firm and permanent mark It is its outstanding feature. At present, in the marking industry, laser marking machines have occupied more than 90% of the market. The reason why the laser marking machine has such a large share is because it has the following eight advantages:
For example, the mark will not fade due to environmental factors (touch, acidity and degassing, high temperature, low temperature, etc.).
The marks engraved by the laser marking machine are not easy to copy and replace, and to a certain extent, it has a strong anti-counterfeiting ability.
Laser marking uses non-mechanical "light knife" processing, which can print marks on any regular or irregular surface. After marking, the workpiece will not generate internal stress, thereby ensuring the original accuracy of the workpiece. The working surface is non-corrosive, no "tools" are worn, non-toxic and non-polluting.
4. Widely applicable
Using laser as a processing method, it can process various metal and non-metal materials (aluminum, copper, iron, wood products, etc.).
5. High engraving accuracy
The object pattern engraved by the laser marking machine is fine, and the minimum line width can reach 0.02 mm. The marking is clear, durable and beautiful. Laser-printed labels can meet the needs of printing large amounts of data on extremely small plastic parts. For example, it is possible to print two-dimensional bar codes that require higher accuracy and high definition, which is more competitive in the market than embossing or jet marking methods.
6. Low operating costs
The marking speed is fast, the marking is formed at one time, the energy consumption is low, and the operating cost is low. Although the equipment investment of laser marking machine is larger than that of traditional marking equipment, the use of laser marking machine is much lower in terms of operating cost. Example:
① Marking of plastic packaging triode: The working speed of the laser marking machine is 10 pcs/sec. If the equipment depreciation is calculated for 5 years, the marking cost is 0.00048 yuan/piece. If you use a pad printer, the overall operating cost is about 0.002 yuan per unit, or even higher.
② Marking on the bearing surface: If the bearing is three-level, there are 184 characters in total, using a oscillating mirror laser marking machine, and the service life of the lamp tube is 700 hours, then the comprehensive cost for marking each bearing is 0.00915 yuan. The cost of electro-erosion lettering is about 0.015 yuan per piece. Based on the annual output of 4 million sets of bearings, there is only one mark, and the cost can be reduced by at least 65,000 yuan a year.
7. High processing efficiency
The computer-controlled laser beam can move at high speed (up to 5 ~ 7 m/s), and the marking process can be completed in a few seconds.
8. Rapid development
Due to the combination of laser technology and computer technology, users can realize laser print output as long as they program on the computer, and can change the print design at any time. It fundamentally replaces the traditional mold manufacturing process, and provides for shorter product upgrade cycles and flexible production. A convenient tool.