Working principle and advantages of DLP3D printer

Since the development of 3D printing technology, various new technologies have emerged at the historic moment, 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 penetrated into the lives of the general public.

There are many 3D printing technologies, including selective laser sintering molding (SLS), selective laser melting molding (SLM), fused deposition molding (FDM), three-dimensional lithography (SLA), and digital light processing (DLP). Among them, DLP, SLA, and FDM are more widely used and closer to the lives of the general public. The following mainly introduces DLP technology.

One. working principle

DLP is the abbreviation of "Digital Light Procession", that is, digital light processing. That is, the image signal is digitally processed and then projected out of light. It is based on the technology of digital micromirror element-DMD developed by Texas Instruments, to complete the visual digital information display technology. The basic principle of DLP3D printing technology is that the digital light source performs surface layer projection on the surface of the liquid photosensitive resin in the form of surface light, and the layers are cured and formed.

Two. Application range

DLP has its unique advantages over other types of 3D printing technology. First of all, there is no moving beam, small vibration deviation, no moving nozzle, no material blocking problem, no heating parts, improved electrical safety, short printing preparation time, energy saving, the first time the amount of consumables added is much less than other equipment, saving user costs . Secondly, DLP can manufacture more delicate parts, such as jewelry, dental molds, etc. Compared with other large 3D printers, DLP printing technology cannot 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 can improve surface treatment quality and speed. Zhejiang Xunshi Technology has an experienced 3D printing technology research and development team. In recent years, it has developed a high-precision MoonRay series DLP3D printer leading the industry. Among them, SprintRay Pro, as a new product in 2019, has improved the printing accuracy to 0.095mm, and the surface is smooth and almost does not require post-processing. The device can effectively control printing costs, repair models with one click, automatically add support and labels, reduce water marks on printed models, 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, and it is favored by new dental implant technology.

Three. Advantage

1. Ultra-high precision and smooth surface, hardly any sanding except local support.

2. Good material, clear lines and highlight details.

3. Very textured visual effects and fast production speed.

4. More materials can be used to meet various performance requirements.

It can be said that DLP technology is a development of SLA (stereoscopic curing technology) printing technology. SLA printing can only be point-to-surface, and printing is slower. DLP technology can directly print one piece, which greatly improves printing speed.

The emergence of desktop-level DLP3D printers has made 3D printing truly enter the field of view of the general public, allowing more people to recognize and use 3D printing technology. At the same time, it also indicates that the new type of manufacturing industry is playing a revolutionary role in industrial development, and more and more disadvantages of traditional manufacturing industry can be made up for. Different 3D printing technologies are playing an irreplaceable role in various fields and making a significant contribution to society.