威廉希尔官方下载

The Importance and Working Principle of PCB Laser Marking Machine

Apr 24, 2020

PCB is one of the important components of the electronic industry. The industrial output value accounts for about one-quarter of the total output value of electronic components, and it accounts for the largest proportion in each electronic component segmentation industry. FPC is one of the fastest-growing sub-industries in PCB industry. From the perspective of global development trends, through large-scale restructuring, migration, and technology upgrading, domestic PCB and FPC production and processing enterprises seize the opportunity of electronic products to transfer to China, which further improves the proportion of domestic PCB output value in the international market.

PCB needs some information, such as barcode, QR code, serial number, batch number, company information, logo, etc.

Laser PCB marking is non-contact, no ink, no chemical pollution, low operating cost, permanent marking, good for the environment.

What is the working principle of the PCB laser printer?

"Hot-working" has a high energy density laser beam (it is a concentrated energy flow). When it is irradiated on the surface of the material to be processed, the laser energy is absorbed on the surface of the material, and the process of thermal excitation is generated in the irradiation area, so that the temperature of the material surface (or coating) rises, resulting in the phenomena of change, melting, ablation, evaporation, etc.

Cold working (UV) photons with high load energy can break chemical bonds in materials (especially organic materials) or surrounding media until the materials are destroyed in the non-thermal process. This kind of cold working is of special significance in laser marking processing because it is not hot ablation, but cold peeling which does not produce the side effect of "heat damage" and breaks the chemical bond, so it has no heating or hot deformation effect on the inner layer and adjacent area of the machined surface.

Features of PCB laser marking machine:

First: high precision. Laser marking is fine, precise, and non-contact processing. It can make fine lines below 0.1mm and characters and numbers within 0.5mm on the surface of the material. It is especially suitable for the identification of extremely small graphics and characters required by the circuit board.

Second: safety and environmental protection. Only a small amount of gas can be produced and can be discharged by suction, without the assistance of chemicals, so as to protect the safety and working environment of operators as much as possible.

Third: high quality. Electronic chips have high requirements for marking quality, clarity, and permanence. Laser marking function can achieve permanent and clear markings of chips, which will not fade due to some external factors such as high and low temperature, acid and alkali, friction, and so on.

Advanced laser processing technology can be directly formed at one time. Non-contact machining has no burr, high precision, and high speed. In particular, this laser processing method will not damage the electronic components on the PCB. In contrast, traditional processing methods can not meet the changing market demand, such as narrow linewidth, narrow line spacing, smaller and smaller aperture, and higher flexibility.

The special laser marking machine for PCB is put into use, which can significantly improve the production and processing efficiency and product yield. 威廉希尔官方下载ing advanced laser marking technology, it can improve productivity, reduce costs, and reduce pollution, which is the ideal choice for PCB marking.

The PCB two-dimensional code laser marking machine developed and produced by KINGS laser has been widely used in PCB, SMT, and other industries. It can automatically generate two-dimensional code from raw material purchase, production process and process, product batch, manufacturer, production date, product destination, and other information, and automatically mark on the surface of PCB / FPCB through laser, so as to realize the traceability and management of products.


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