3D Laser Marking Machine

3D laser marking is a laser surface depression processing method. Compared with traditional 2D laser marking, 3D marking has greatly reduced the surface flatness requirements of the processed object, and the processing effects are more colorful and more creative. Processing technology came into being

1.What is 3D laser marking machine?

3D laser marking technology has developed vigorously and has received a lot of attention in the industry. Some forward-looking industry companies are also stepping up the research and development of 3D laser marking products; in the next few years, laser marking will gradually change from 2D Transition to 3D, 3D laser marking will surely penetrate into all areas of people's lives.

2.Principle

Use high-energy-density laser to locally irradiate the workpiece to vaporize the surface material or cause a chemical reaction of color change, thereby leaving a permanent mark. Laser marking can mark a variety of characters, symbols and patterns, etc., and the size of the characters can even reach the order of micrometers. The laser beam used for laser marking is generated by a laser. After a series of optical transmission and processing, the beam is finally focused by optical lenses, and then the focused high-energy beam is deflected to the specified position on the surface of the object to be processed, forming a permanent depression trace. Traditional 2D laser marking uses a rear focus method, and generally can only perform flat marking within a specified range. The advent of the new 3D laser marking machine has solved the long-standing inherent defect of the 2D laser marking machine. The 3D laser marking machine adopts an advanced front gathering method and has more dynamic focus seats. This adopts optical principles and resembles The working principle of candle imaging is to control and move the dynamic focusing lens through software, and perform variable beam expansion before the laser is focused, thereby changing the focal length of the laser beam to achieve accurate surface focusing processing on objects of different heights.

3.Advantages

3.1 Larger range and finer light effects

3D marking adopts the front focusing optical mode, using larger X and Y axis deflection lenses, so it can allow the laser spot to be transmitted larger, the focusing accuracy is better, and the energy effect is better; if the 3D marking is in the same position as the 2D marking When working with the same focus accuracy, the marking range can be larger.

3.2 Can mark objects of different heights, and the variable focal length changes greatly

Because 3D marking can quickly change the laser focal length and the position of the laser beam, it becomes possible to mark curved surfaces that cannot be achieved in 2D in the past. After using 3D, the marking of a cylinder within a certain arc can be completed at one time, which greatly improves the processing efficiency. Furthermore, in real life, the surface shape of many parts is irregular, and the surface height of some parts is quite different. It is really powerless for 2D marking processing. At this time, the advantages of 3D marking will become more obvious.

3.3 More suitable for deep carving

Traditional 2D marking has inherent defects in deep engraving of the object surface. As the laser focus moves up during the engraving process, the laser energy acting on the actual surface of the object will drop sharply, which seriously affects the effect and efficiency of deep engraving.

For the traditional deep engraving method, the lifting table is moved to a certain height at regular intervals during the engraving process to ensure that the laser surface is well focused. 3D marking for deep engraving processing does not have the above problems, which not only guarantees the effect, but also improves

Efficiency, while saving the cost of electric lifting table.