Since the development of 3D printing technology, various new technologies have emerged, and more and more materials can be used, and the application fields are becoming wider and wider. Today, 3D printing technology is no longer so high, and has already penetrated the public life.
There are many 3D printing technologies, including selective laser sintering (SLS), selective laser melting (SLM), fused deposition (FDM), stereolithography (SLA), and digital light processing (DLP). Among them, DLP, SLA and FDM are used in a wider range and closer to the public. The following mainly introduces DLP technology.
One. working principle
DLP is the abbreviation of "Digital Light Procession", which is digital light processing. That is to say, the image signal is digitally processed and then projected. The digital micromirror component DMD developed by Texas Instruments is used to complete the display of visual digital information. The basic principle of DLP3D printing technology is that the digital light source is layered on the surface of the liquid photosensitive resin in the form of surface light, and the layer is cured.
How DLP works
two. Application range
DLP has its unique advantages over other types of 3D printing technology. First of all, there is no moving beam, the vibration deviation is small, there is no moving nozzle, there is no material blocking problem, there is no heating part, the electrical safety is improved, the printing preparation time is short, energy is saved, the first consumables are added much less than other equipment, saving the user cost. . Second, DLP can produce more elaborate parts, such as jewelry, dental molds and so on. Compared with other large 3D printers, DLP printing technology can't print large objects, so most of them are desktop-level 3D printers, which are mostly used in medical, jewelry, education and other fields.
Advanced DLP technology improves surface finish quality and speed. Zhejiang Xunshi Technology has an experienced 3D printing technology R&D team. In recent years, it has developed a high-precision MoonRay series DLP3D printer that leads the industry. Among them, SprintRay Pro, as a new product in 2019, has improved printing accuracy to 0.095mm, and the surface is smooth and requires almost no post-processing. The device can effectively control the printing cost, one-click repair model, automatically add support and labels, reduce the watermark of the print model, and print data can be viewed in real time in the cloud. With its high performance, SprintRay Pro is widely used in dental 3D printing, which is favored by new dental implanters.
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three. Advantage
1. Ultra-high precision, smooth surface, except for local support, almost no grinding.
2. The material is good, the lines are clear, and the details are highlighted.
3. Very textured visual effects, fast production.
4. Can use a variety of materials to meet a variety of performance needs.
It can be said that DLP technology is the development of SLA (stereo-curing molding technology) printing technology, SLA printing can only point to the surface, printing is slow, DLP technology can directly print one, greatly improving the printing speed.
The emergence of desktop-class DLP3D printers has made 3D printing truly enter the public's field of vision, allowing more people to recognize and use 3D printing technology. At the same time, it also marks that the new manufacturing industry is playing a revolutionary role in industrial development, and more and more drawbacks of the traditional manufacturing industry can be compensated. Different 3D printing technologies are playing an irreplaceable role in various fields and making significant contributions to society.
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