Structure and working principle of laser engraving machine:
1. Structure:
Laser engraving machine: Including a laser and a gas nozzle on its output optical path. One end of the gas nozzle is a window, and the other end is a nozzle coaxial with the laser optical path. The side of the gas nozzle is connected with a gas pipe. , Especially that the air pipe is connected with the air or oxygen source, the pressure of the air or oxygen source is 0.1~0.3MPa, the inner wall of the nozzle is cylindrical, its diameter is 1.2~3mm, and the length is 1~ 8mm; the oxygen in the oxygen source accounts for 60% of its total volume, and a reflector is placed on the optical path between the laser and the gas nozzle. It can improve the efficiency of engraving, make the surface of the engraved place smooth and round, quickly reduce the temperature of the engraved non-metallic material, and reduce the deformation and internal stress of the engraved object; it can be widely used for various non-metallic materials The area where fine carving is performed.
2. The working principle of the laser engraving machine:
1) Dot matrix engraving. Dot matrix engraving is exactly like high-definition dot matrix printing. The laser head swings left and right to engrave a line consisting of a series of dots each time, and then the laser head moves up and down to engrave multiple lines at the same time, and finally forms a full-page image or text. Scanned graphics, text and vectorized graphics can all be carved with dot matrix.
2) Vector cutting is different from dot matrix engraving. Vector cutting is performed on the outer contour of the graphic. We usually use this mode for penetrating cutting on wood, acrylic, paper and other materials, as well as marking on the surface of a variety of materials.
3) Spot size: The size of the laser beam spot can be adjusted with lenses with different focal lengths. A lens with a small spot is used for resolution engraving. A lens with a large spot is used for resolution engraving, but it is the best choice for vector cutting. The standard configuration of the new device is a 2.0-inch lens. The spot size is in the middle, which is suitable for various occasions.
4) Engraving intensity: Engraving intensity refers to the intensity of the laser that hits the surface of the material. For a specific engraving speed, strength size, cutting or engraving depth will do. You can use the panel of the engraving machine to adjust the intensity, or within the range of 1% to 100%, the adjustment range is 1%. The intensity is high, and the speed can be equivalent. The depth of the cut is also deeper.
5) Engraving speed: Engraving speed refers to the moving speed of the laser head, usually expressed in IPS (inches per second). High speed brings high production efficiency. Speed is also used to control the depth of cutting, you can use the engraving machine panel to adjust the speed, or use the computer’s print driver to adjust the specific. In the range of 1% to 100%, the adjustment range is 1. %. The advanced motion control system of the Hamm machine can make you still get super fine engraving quality when engraving at high speed.
6) Carving materials: wood products, plexiglass, metal plates, glass, stone, crystal, Corian, paper, two-color plates, alumina, leather, resin, spray metal.
