Views: 0 Author: Site Editor Publish Time: 2021-02-26 Origin: Site
The CO2 laser marking machine is a highly accurate tool for engraving, decorating or making custom logos on acrylic, wood, paper, metal, plastic and a range of other materials. They popularize the personalization of objects and give craftsmen the ability to create impressive designs through laser engraving. These high-power machines can etch patterns on glass or cut wood into very precise shapes. Their laser beam engraving technology guarantees excellent precision, making them the darling of designers and decorators. In this article, we talk about the structure and the system of CO2 laser marking machine.
The following knowledge points are listed below:
Main system structure of CO2 laser marking machine
The laser tube of CO2 laser marking machine
The mirrors and focus lens of the CO2 laser marking machine
The cooling system of the laser tube
The structure of C02 laser marking machine is similar to that of fiber laser marking machine, but there are some differences. The whole machine includes laser light source, F-theta lens, laser head, computer, control board and software, power supply, etc. The difference is that C02 uses a CO2 laser source, and a chiller is used to cool glass or metal laser tubes.
The tube can be made of glass or metal. The advantage of glass tubes is the low cost, and the disadvantages are:
(1) Glass laser tubes require a water cooling device or cooler.
(2) The glass laser tube does not support the light carving mode of 256-degree grayscale
(3) Glass laser tubes do not support seal manufacturing conditions.
(4) Glass laser tubes are not suitable for applications that require high-quality engraving and marking.
(5) Glass laser tube power output parameters are unstable
(6) The glass laser tube cannot be repaired.
(7) The glass laser tube is not resistant to the influencing factors of production environment such as machinery, heat and weight.
(8) The glass laser tube is not protected by a metal shell and looks like a piece of glass, which is easy to crack during the transportation, repair and maintenance of the machine.
The quality of CO2 laser marking machine mainly depends on the quality of the built-in laser light path mirror and focusing lens and the type of coating on the optical element. Generally the laser light is routed by 3 or 4 mirrors to sequentially transmit the laser beam at a 90-degree angle laser tube working area and the focusing lens is built in the laser carriage to converge the laser beam at the field working area.
A special coating is applied to the reflector of the optical system of the laser marking machine to improve the reflectivity of the laser beam. An economical reflector was installed on the laser machine in China. The coating applied to this mirror will soon burn down. The laser power loss rate in the economy class is very high. Because of this economy, the laser beam loses a lot of laser power before converging to the work area. The percentage of laser power loss in the optical path reaches 20-50%.
The focusing lens of the laser marking machine is an important part of the laser optical system. The condenser lens is made of zinc selenide, and its laser beam transmission rate is the highest. A special coating or plating on the focusing lens minimizes the refractive index of the laser beam on the lens surface and increases the ability of the laser beam to pass through the lens. The installation of an economic focusing lens on a domestic laser machine results in distortion of the laser beam, large laser power loss in the working area, and poor quality of laser engraving and cutting.
The stable operation of the laser marking machine largely depends on the cooling system of the glass laser tube. Any problems with the cooling system may cause the laser tube to fail. Therefore, the laser marking machine must be equipped with a water cooling device or a cooling device to cool the laser tube. The chiller keeps the water temperature at a given level. Freon gas that does not destroy the ozone layer is used as a refrigerant. The chiller provides stable operation of the laser tube. If you buy a laser machine with a cooling system, the cooling system consists of a plastic tank and a fish tank compressor, we think the supplier does not respect you. The chiller must be properly coordinated with the laser marking machine and consistent with the power of the installed laser tube. The cooling circuit of the laser marking machine must be equipped with a water flow sensor as an additional protection for the water-cooled laser tube. If the sensor detects insufficient flow or poor water circulation, the laser will automatically turn off the laser tube to protect it from damage, saving you money and nerves.
So you know the system structure of a CO2 laser marking machine now? Here you can see our main product like laser welding machine, UV laser marking machine.
