Laser tag auto parts to improve the traceability
121 years ago, the world's first car, "Mercedes-Benz 1," Since the birth of the automobile industry has been rapid development. With the vehicle speed is on the rise, security is increasingly taken seriously.
In the 1960s, the United States issued the first auto recall system related to the "National Traffic and Motor Vehicle Safety Act" on auto parts made in strict traceability requirements of the auto parts marker of the development of this technology Opened a curtain.
At present, auto parts marker common way: Die Casting, electricity and corrosion tags, self-adhesive, screen printing, laser tag and pneumatic marker. Although one laser marking the birth of the latest technology, but since the birth of their indelible mark of the never received wide attention.
Laser will be used for auto parts marker of the main advantages is that it is a fast, programmable, non-contact process, the process lasting usually not subject to the necessary steps in the production process, are not subject to the Withstand the harsh environment of the scene. Of course, it also has shortcomings, such as laser tag equipment for the initial higher cost, in some applications (such as marking of plastic products), marking the lack of contrast.
Laser choice
As a rule, marked in the auto parts, the main use of two types of laser:
1.CO2 laser, as its name implies, this is the use of carbon dioxide gas to generate monochromatic light to mark the formation of 10640nm wavelength. Applicable to non-metallic materials and Paint on the surface of the metal tags.
2.Nd3 +: YAG laser, the doping of carborundum crystal materials used for medium, so as to generate close to 1064nm wavelength far-infrared beam. Applied to metal materials and non-metallic parts of marking materials.
3.Nd3 +: YAG laser in the field of new research and development for laser marking of plastics additives, basically to eradicate the contrast. Even in some of the 1064nm wavelength is difficult to absorb the surface of the plastic material, can also Nd3 +: YAG laser was a very clear marker (Figure).
Laser, two-dimensional bar code and the code
Two-dimensional bar code and the code is the product traceability all forms of popular technology, fully applicable to all types of auto parts.
Early major auto parts marker against the mark on the product serial number traceability to meet the requirements of the birth of the bar code was applied to the rapid identification of auto parts (Figure 2), but its message less, poor make it fault-tolerant Has not been universal and comprehensive. The problem until the birth of two-dimensional code technology to be resolved.
Two-dimensional code is similar to a chessboard-shaped 2D graphics can be a very small region of the contents of a large number of satisfied information. 2D graphics as two-dimensional code to read out only in the performance of 50% or even lower ratio of so using two-dimensional graphics code, greatly increased the number of laser applications.
Two-dimensional code with the code also features a built-in calibration, even for one reason or another part of the code had been damaged, the code can still be read out. Two-dimensional code can be used several different forms of encryption decoding, in the protection of data into the device, making this type of mark on the patented components greater value. "Chinese laborers laser" LSY50F laser marking system, for example, in addition to marking software with automatic generation bar code, but also to support the DataMatrix, PDF417, QR Code, such as two-dimensional code technology.
Database and network support for the importance of
The auto parts traceability through the product database to achieve the mark, before the birth of the computer, the data entry and retrieval of artificial manner, the need to spend a lot of manpower and increasingly large database search of a great test . Computer and Network for the birth of this work has brought a new model.
As the laser marking system uses computer-controlled manner, making the database automatically and the search has become a very easy matter. As a domestic concern of the first laser in the automotive industry - the "Chinese laborers laser", for auto parts companies that demand very early in the software tags implanted in strong support of the database and networking functions, and can drive vehicles Manufacturers and parts of the database network seamlessly link can be automatically marked the completion of the information database, and upstream and downstream data communications functions, the realization of the entire process of tracking products.
How the cost of
Independent on-line or laser marking system higher than the initial investment will be most marked the traditional systems.
It is important that if the cost of ownership by way of comparison, over time, laser marking system is actually a better investment, because it's not too important consumables, there is no recurring costs of the process, According to the supplier or orders, inventory, or add the cost of the product. Long life, the CO2 gas-tight configuration and diodes, solid-state laser marking system needs very little maintenance. Also, in most auto parts production process, the laser marking system has been moving in the direction of the development of automation, and its operation is no need special attention, but little or essentially unregulated operators.
Conclusion
October 1, 2004 since the beginning of the implementation of China's auto recall system means that the auto parts to further improve the traceability requirements. If the quality of auto parts batches of the problem, the company's reputation, responsibility and the future of the business depends on the failure to address and correct measures. Two-dimensional code based on laser technology to facilitate the identification of the entire life cycle of the product traceability.
Flexible label laser marking system
Tag in the modern manufacturing industry on the use everywhere. In various industries, improvement of product identification requirements have never been interrupted. Mark in the industry as a whole towards the development of traceability of information, control of the PC industry to adopt flexible label laser marking system as a result of database software, marking the broad support will certainly suffer more and more attention.
Flexible refers to the major labels TESA, 3M Company, and other production materials produced by the label-specific tags. Typical materials such labels are Tesa-6930 and 3M-7846. To Tesa-6 9 3 0, for example, the material thickness of about 1.18mm, a total of four, including: the first layer is black Acrylic PU, the second layer is a white acrylic PU, the third layer is a special stick And the agent, is the fourth layer protective coating.
The material has the following characteristics:
(1) the use of temperature - 50 ¡æ ~ 300 ¡æ.
(2) non-combustible materials, corrosion, wear-resistant.
(3) life span of more than 20 years (in normal conditions of use).
Once the paste to the surface, 8h after the paste can not place further down. If the forced removal of labels, the labels are moving debris will be, can not be used again. This allows labels to be difficult to copy from the label is easy to identify the authenticity of the car and parts.
Precise control of the laser beam in the above-mentioned four special labels on the material scanned, according to the needs of the user's information through the precision control of laser energy output and scanning speed, remove the first layer on the surface layer color (black), his second (White), thus completing the design of the user a text message or the laser marking of work. In order to facilitate the paste through the precision control of laser beam in the labeling requirements of the closure of the external design, materials labels removed one, two, three, so easy to label requirements from the entire volume of material on the stripped down. As a result of the spin-off label with a plastic top, so there would be very easy to paste into the desired location on the vehicle. We call the first line of laser removal process for the laser tag in the material on the marking process, saying that laser removal of one, two, three laser cutting process for the label material.
Figure one: Nd3 +: YAG laser can also be very clear plastic surface of the tag
Figure II: Based on the laser tag and bar code technology, auto tag
Figure III: The metal parts in the two-dimensional code marking the surface of the product traceability
Figure four: two-dimensional common code tags
