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Principle and characteristics of carbon dioxide flying laser marking machine

by:Leadtech Coding     2021-12-05

The CO2 laser marking machine uses a gas laser with an infrared light band of 10.64μm to charge CO2 gas into a high-pressure discharge tube to generate glow discharge and release gas molecules After the laser is emitted, the laser energy is amplified to form a laser beam for material processing, thereby forming a clear, permanent, and indelible mark on the surface of the processed object.

Carbon dioxide flying laser marking machine, also known as CO2 online laser marking machine, is mainly used for online laser marking on the surface of various products or outer packaging. Compared with the traditional static laser marking machine, during the engraving process of the flying laser marking machine, the products can flow continuously on the production line, which greatly improves the production efficiency and makes the laser marking machine adapt to the industry Requirements for assembly line production.

Principle of carbon dioxide laser marking machine

CO2 laser marking machine is a laser marking using CO2 gas as the working medium machine. The CO2 laser 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. Glow discharge is generated in the discharge tube to release the gas with a wavelength of 10.64um laser. After the laser volume is amplified, it is vibrated After mirror scanning, mirror reflection and field lens focusing, under the control of the computer and laser marking board, images, characters, numbers, and lines can be marked on the workpiece according to the user's requirements.

Carbon dioxide laser is a kind of molecular laser, the main substance is carbon dioxide molecule, which can express a variety of energy states This depends on the shape of its vibration and rotation. The mixed gas (carbon dioxide, helium, nitrogen) in carbon dioxide is a plasma formed by low-pressure gas caused by the release of electrons. As Maxwell-Boltzmann's law of distribution says, in plasma, molecules exhibit multiple states of excitement. Some will exhibit high-energy states. It appears as an asymmetric swing state. When colliding with a hollow wall or radiating naturally, such molecules will accidentally lose energy.

Through natural emission, this high-energy state will drop to a symmetrical swing form and emit photons (a light beam with a wavelength of 10.6μm) that may travel in any direction. A type of photon will travel along the optical path and swing in the galvanometer. Then, after the reflection of the total reflection mirror, the laser in the resonant cavity forms a laser beam.

Features of CO2 flying laser marking machine

1. Non-contact processing: It can be used on any regular or irregular surface Mark exquisite marks;

2. Wide application range: It can mark pictures and texts on most non-metallic materials and some metal materials;

3. Low operating cost: the marking speed is fast and the marking is formed at one time, with very few consumables, so the operating cost is low;

4, Marking on the assembly line: it can be integrated with other equipment on the production line to improve the automation of the production line;

5, the mark is clear, permanent and indelible, beautiful, and effective anti-counterfeiting , Long service life, no pollution.

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