Views: 119 Author: Site Editor Publish Time: 08-06-2021 Origin: Site
Today, laser marking machines have been widely used in various industries. Because laser marking has the advantages of high efficiency, non-contact processing, and environmental protection compared with traditional shift marking methods, it can save labor costs for enterprises and improve production efficiency. If the laser marking machine can increase the marking speed, it will bring higher production efficiency and higher value to the enterprise, then how to improve the marking speed and efficiency of the laser marking machine? Today Leapion laser will analyze it.
Laser marking uses a laser beam to make permanent marks on the surface of various materials. The effect of marking is to expose the deep material through the evaporation of the surface material, or to "carve" traces through the chemical and physical changes of the surface material caused by light energy, or to burn off part of the material through light energy to show the required etching Patterns, text. Therefore, the marked content will not be easily lost.
There are many factors that affect marking efficiency, mainly in two aspects. One is the different types of materials to be marked, and the other is the equipment itself, such as the field lens, galvanometer, power and delay parameter settings. So, what exactly should be done to improve the marking speed and efficiency of the laser marking machine?
The laser marking speed is related to the performance of the galvanometer. Under normal circumstances, the scanning speed of the galvanometer can reach 3000mm/s, but a better high-speed galvanometer can scan tens of thousands of times per second.
After the speed of the laser marking machine increases, the laser energy per unit area of laser marking becomes smaller. To keep the laser marking effect unchanged, it is necessary to increase the laser power.
The larger the focal length of the field lens, the larger the focused spot. Under the same spot overlap rate, the filling line spacing can be increased, thereby improving the marking efficiency.
Remarks: The larger the field lens, the lower the power density. Therefore, it is necessary to increase the spacing of the filling lines while ensuring sufficient marking energy.
1) Two-way filling: The marking efficiency is high, and the effect is good.
2) Shape filling: It is only used when marking thin graphics and fonts, and the efficiency is almost the same as that of bow filling.
3) One-way filling: The marking efficiency is the slowest, and it is rarely used in actual processing.
4) Bow-shaped filling: The marking efficiency is the highest, and sometimes there will be problems with connection lines and unevenness. When marking thin graphics and fonts, the above problems will not occur, so bow-shaped filling is the first choice.
The above four filling methods are different and can be changed according to the actual marking requirements. Choosing the corresponding filling method can also improve the marking efficiency. If you do not pursue detailed marking effects, it is recommended to use bow filling to significantly increase the marking speed. If you want to have both, two-way filling is a very good choice.
Different filling types are affected by different delays, so reducing delays that are not related to the filling type can also improve marking efficiency.
1) Bow fill and round fill: Mainly affected by the corner delay, it can reduce the turn-on delay, turn-off delay, and end delay.
2) Two-way filling and one-way filling: It is mainly affected by the light-on delay and the light-off delay, which can reduce the corner delay and the end delay.
But at the same time, it should be noted that thick graphics and fonts are less affected by the delay, and the delay can be appropriately reduced. Thin graphics and fonts are greatly affected by the delay, and the delay can be increased appropriately.
The main hardware aspect is whether the laser (laser tube) and polarizer system quality, stability, speed and other "hard parameters" pass the test. The quality of these hardware will directly affect some important parameters of the laser marking machine, such as laser power. , Laser frequency, jump speed, scribing speed, dotting time, spot mode, beam divergence angle, etc.
Good software can better match the hardware and take advantage of the higher speed that the hardware can achieve.
For example: for good quality anodized aluminum (thick oxide layer, uniform oxidation, fine sandblasting), when the scanning speed is 2000~3000mm/s, the surface will be marked as very black traces; for inferior aluminum oxide, the speed must be changed Reduce to a few hundred millimeters per second to ensure the black mark. Therefore, good materials can effectively improve marking efficiency.
The laser marking machine can be automated, such as adding an assembly line or an automatic feeding and receiving device such as vibrating disk feeding. This automated assembly line can reduce labor costs and improve efficiency.
The above 8 common methods to improve the efficiency and speed of laser marking machines. Of course, we must first ensure the effect of laser marking, and then consider how to improve the speed and efficiency, otherwise it will only be haste but not achieved. If you have any other questions about the laser marking machine, please contact Leapion Laser directly.
