1： Development history of CO2 laser engraving machine

CO2 laser machines imported and manufactured in the early stage are low-power lasers with less than 200 watts. It is mainly used in electronic industry (such as resistor manufacturing, IC signs), non-metallic processing industry (bamboo carving, clothing, shoe making, jewelry manufacturing, etc.) and some medical and scientific research institutions.

The CO2 laser beam passes through the mask and focuses on IC or semiconductor components for marking. This CO2 laser is mainly tea pulsed. However, with the faster and faster marking processing speed, higher and higher processing quality requirements, and the rapid development of solid-state lasers, the newly launched marking processing lasers are gradually replaced by solid-state YAG lasers.

Cover the nonmetallic material to be carved with a hollow copper mold, and then quickly scan the copper mold with a CO2 laser beam to carve complex patterns on the material. Carved objects include wood, acrylic, leather and paper. In addition, it can also be applied to unique handicrafts, such as bamboo carvings, cork reliefs, shell reliefs, etc. A small and varied gift, carved directly with a scanning galvanometer to increase the added value of the product.

The ready to wear and footwear industry has been leading the coquettish industry for more than a decade, and it is also an early successful example of introducing foreign or self-produced low-power CO2 laser processing. It is only used for development or small and diverse production, so the quantity is limited. There are also a few CO2 lasers of about 150 watts that are directly used in the production of leather clothing and leather goods. In addition, the computer embroidery industry uses laser and CCD sampling to directly cut off many patterns embroidered on a large piece one by one. However, with the outward migration and contraction of these two industries, the use of CO2 lasers in this field has not increased. The use of low-power CO2 laser to cut thin bark for decoration on furniture or accessories is growing, which is mainly combined with modeling design and post production, and has high added value.

Due to the rapid development of foreign CO2 lasers, low-power CO2 lasers adopt sealed structure, and their quality is getting better and better. Therefore, in addition to the above processing industries, there are also many such CO2 lasers in other imported application systems, which have great application potential in punching, finalization in the printing industry, rapid prototyping, lens labeling and ceramic substrate processing

CO2 lasers with output power less than 200 Watts are more than enough for cutting some thin non-metallic materials. In addition to the above commonly used industries, there are many special materials in the industry that can be replaced by laser processing, such as acrylic models in the construction industry. The hard board pattern on the cover of the wedding album is small and complex, but it can be cut by CO2 laser. The cutting of mica sheet, the cutting of inner fiber cloth of bulletproof clothing, the cutting of nylon safety belt, and the cutting of other special materials such as fiberglass, ABS, Teflon, asbestos, rubber, etc. There are precedents for laser processing, but special attention should be paid to the emission of gases generated in the cutting process.

2： Comprehensive application of CO2 laser engraving machine

Medium and high power lasers are the mainstream of CO2 laser processing equipment at present, which are mainly used in the sheet metal casting industry, and a few machines are production equipment for factory use. At present, nearly one-third of such lasers have been launched recently, which indicates that CO2 lasers with such power are in the stage of rapid growth. The main application of medium and high power CO2 laser equipment is sheet metal cutting, most of which are operated in the form of OEM. There are a wide range of processing objects and a wide variety of processing. Here are some examples of many applications or special applications.

1. Wood knife mold industry

CO2 laser is used to cut various grooves with complex and repeated patterns on the wood, with a width of about 0.6mm, and then sharp blades are installed to make rolling tools, which are used to cut all packaging cartons, injection molding, and Lilong electrical appliances. Flexible circuit boards are very important components in the production process, and their application prospects are broad.

2. Cutting of various mechanical parts

In fact, laser processing can be used to replace the traditional processing method for various parts of the machine with a certain thickness or complex shape. Although the processing cost may be higher (some may not be certain), it can save a lot of manpower and improve the product quality.

3. Automobile sheet metal cutting

The automobile sheet metal after molding and rolling is of three-dimensional shape, which is generally difficult to reprocess. If the five axis CO2 laser processing machine is used to cut the blank holder and excavate the inner hole, the advantages of laser processing can be brought into full play. At present, there are several domestic factories specializing in the production of sheet metal for automobile maintenance, and the imported five axis CO2 laser processing machine is used for this processing. However, such machines are still in the high price stage. If the price can be reduced in the future, many domestic manufacturers will introduce such processing machines.

4. Sheet metal cutting of computer and electrical enclosures

The sheet metal cutting of computer shell, and the sheet metal cutting of various machine control boxes and shells are the most important processing objects. In particular, some products have small output, complex shape, short product life cycle, and the sheet metal that cannot be cut by the mold has the most cutting, such as: electric toy shell, vending machine shell, switchboard, etc. Some have been opened, but after the product design is changed, it must be modified on the formed sheet metal.

5. Cutting of special materials

Because the laser can be used for non-contact cutting, the slit is narrow, and does not affect the surrounding materials, it is widely used in the advertising and construction industries. For cutting mirror stainless steel or general stainless steel plates, it is necessary to cut and keep the workpiece surface extremely smooth, such as signboards, sculpture products, elevator control boards, kitchenware, circular saw blades, acrylic, spring washers, copper plates for electronic parts below 2mm, some metal mesh plates, steel pipes, tin plated iron plates Lead plated steel plate, phosphor bronze, electric board, thin aluminum alloy, quartz glass, silicone rubber, alumina ceramic sheet below 1mm, titanium alloy for aerospace industry, etc. With the evolution of industrial form, sheet metal processing objects are becoming more and more complex and diverse. The traditional punch function can no longer meet the requirements, and the wire cutting speed is too slow. The processing function of CO2 laser just makes up for their shortcomings. The main reason for the continuous and rapid growth of the introduction of CO2 laser processing machines.