How to improve the marking efficiency of optical fiber of laser marking machine

1. Factors affecting marking efficiency

For a fixed marking pattern, the factors affecting marking efficiency can be divided into equipment itself and processing materials. From these two factors, it can be subdivided into different aspects:

Therefore, the final influence of marking efficiency is filling type, field lens (filling line spacing), galvanometer (scanning speed), delay, laser, processing materials and other factors.

Second, measures to improve marking efficiency

1. Select the appropriate filling type;

Bow filling: The marking efficiency is extremely high, and sometimes there will be problems of connecting lines and unevenness. When marking thin graphics and fonts, the above problems will not occur, so the bow fill is the first choice.

Bidirectional filling: The marking efficiency is second, and the effect is better.

One-way filling: The marking efficiency is the slowest, and it is rarely used in actual processing.

Backfill: It is only used when marking thin graphics and fonts, and the efficiency is similar to that of bow fill.

Summary: In the case of not requiring detailed effects, using bow fill can improve marking efficiency. Bidirectional filling is the best choice for guaranteed effect and efficiency.

2. Select the appropriate field lens

The larger the focal length of the field lens, the larger the focused spot, and the same spot overlap ratio In this case, the spacing between the filling lines can be increased, thereby improving the marking efficiency.

Remarks: The larger the field lens, the smaller the power density, so increase the spacing between filling lines while ensuring enough marking energy.

3. Choose high-speed galvanometers

Ordinary galvanometers, the Z-high scanning speed can only reach two or three thousand millimeters per second; high-speed galvanometer, Z-high scanning speed can reach tens of thousands of millimeters per second, effectively increasing the marking efficiency. In addition, when using ordinary galvanometers to mark small graphics or fonts, deformation is easy to occur, and the effect must be guaranteed by reducing the scanning speed.

4. Set the appropriate delay

Different filling types are affected by different delays, so reduce the The delay independent of the filling type can improve the marking efficiency.

Bow fill and back fill: mainly affected by the corner delay, which can reduce the light-on delay, light-off delay, and end delay.

Two-way filling, one-way filling: mainly affected by the delay of turning on and turning off the light, which can reduce the corner delay and end delay.

Note: Thick graphics and fonts are less affected by the delay, so the delay can be appropriately reduced. Thin graphics and fonts are greatly affected by the delay, and the delay can be appropriately increased.

5. Select the correct laser

The laser that is available for the first pulse, adjust the height of the first pulse, and the opening delay can be If it is 0, the marking efficiency can be effectively improved for bidirectional filling and unidirectional filling, which often switch the light on and off.

Choosing a laser with independently adjustable pulse width and pulse frequency can not only ensure that the laser spot can overlap a certain amount after focusing at high scanning speed, but also ensure that the laser energy has a certain amount of overlap. Sufficient peak power to reach the material's failure threshold to vaporize the material.

6. Processing materials

For example: good (thick oxide layer, uniform oxidation, no wire drawing, sandblasting) Delicate) anodized aluminum, when the scanning speed reaches two or three thousand millimeters per second, it can also produce a very black effect; poor aluminum oxide, the scanning speed can only reach several hundred millimeters per second. Therefore, suitable processing materials can effectively improve the marking efficiency.

7. Other measures:

a. Check 'Equally distributed fill line';

b. For the marked graphics and fonts, 'enable outline' and 'walk while walking' can be removed;

c, If the effect allows, you can increase the 'Jump Speed' of 'Advanced' and reduce the 'Jump Delay';

d. Mark a large range of The graphics can be properly divided into several parts to fill, which can effectively reduce the jumping time and improve the marking efficiency.