PCB is one of the important components of the electronics industry. The industrial output value accounts for about one quarter of total output value of electronic components. The specific weight in various electronic components is the largest, and the flexible PCB board (ie, FPC) is also growing in the PCB industry. One of the fastest sub-industries. From the development trend of all regions around the world, after large-scale restructuring, migration and technical replacement, domestic PCB and FPC production and processing enterprises seized the timing of electronic products to domestic transfer, making the domestic circuit board output value in the international market further improved.
In the past, in-line enterprises generally use the ink spray code and silk screen processing, some issues continue to highlight: such as the amount of consumables, too high, require professional maintenance personnel, marking effect easy to remove changes, pollution improvement. Its problem is mainly due to the pace of traditional processing methods that has not followed the development of this industry, while the PCB laser marking machine identifies its unique non-smearing anti-counterfeiting in the industry.
As people pay attention to environmental protection, the laser marking relative to the superiority of traditional inkjet markers is getting more and more, laser markers can process water numbers and QR code, etc., to record relevant production information, facilitate the full trace of electronic products Quality control. In the PCB industry, laser marking applications are showing rapid growth trends.
Disadvantages of traditional processing methods:
1. Clean by chemical reagents;
Use a chemical reagent to wash. This method has certain pollution on the environment, and there is more cleaning of moisture in the PCB base after cleaning, resulting in hidden dangers of the bonding product implicitly short circuit or leakage. There are very few bonding plants to use this method.
2, manually eradicate by manual;
Human use rubber blocks or fiber rod erasure. The disadvantage of this method is that the worker has a large intensity, low enthusiasm, and the PCB of the production efficiency, especially after cleaning SMT, and the cleaning quality is unstable, and a large amount of manpower is required.
3. Erase this automated device by wip the board;
This method uses electricity to replace the human wipe board, which greatly reduces the work intensity of the workers; but the cost is higher than the traditional process, but the processing efficiency is good, but the cost performance is not satisfied with the major manufacturers. Requirements with the company.
The advantage of laser marking processing method:
1. Good quality and wear resistance. The surface of the PCB board is clear and beautiful, which can be marked in various logo, pattern, two-dimensional code, text and the pattern is directly engraved on the material, and wear resistance is more prominent;
2. High processing accuracy. The laser beam emitted by the laser is focused, the minimum spot diameter can reach 10 um (UV laser), which has a small benefit when processing complex graphics and precision processing;
3. High efficiency, simple operation, reduce cost. Users only need to set the parameters on the computer to be marked directly, and the material surface tag can be completed in just a few seconds to ten seconds.
4. Non-destructive marking. The laser marking uses non-contact processing, and the laser head does not need to contact the surface of the material, so it is not necessary to consider damage to the material;
5. Wide range of use and safe environmental protection. Various thin metal / non-metallic materials can be marked
6. Stable performance, long service life. With the development of technology, the laser service life has increased significantly, and the service life of equipment is greatly extended.
The laser marker equipment is much larger than the traditional marking process of the traditional marking process due to the high machining accuracy, marking smooth, wide application range. So integrated the current PCB laser marking machine has a broad application prospect in the future, especially with the continuous improvement of the process requirements, the market of laser markings will be further increased.
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