The most common types of light-curing 3D printers are SLA, DLP and LCD, among which LCD is the most widely used, it is much faster than SLA in forming, and cheaper than DLP and SLA. So here is a small analysis of the internal structure of the LCD light-curing 3D printer and its factors that will affect the printing speed.
The structure of LCD3d printer
The overall internal structure is: 1, light source, 2, focusing lens, 3, Fresnel lens, 4, polarizing film, 5, LCD screen, 6, polarizing film, 7, reservoir tank bottom film, 8, light curing resin, 9, curing molding parts tray.
Some factors that affect the printing speed
1, the intensity of the light source. Resin for printing technology is applied to the light source irradiation curing photosensitive resin, and the three different light sources we mentioned above, in speed, dlp > lcd > sla, in addition to the actual light source is able to determine the speed of printing based on the intensity.
2, layer thickness. Not only speed, model accuracy will also have a corresponding impact. The thicker the layer, the more time saved when printing, because if we cut software to cut the thickness, the fewer layers we need, the faster the printing speed, the cost of doing so is obviously, sacrificing speed to get a low-quality model, which is obviously not what we want to see, therefore, in the layer thickness selection, you need to grasp the degree.
3, the material. The selection of resin materials, because different monomers, prepolymers, photoinitiators and other additives combined into the resin, can directly cause different material properties and different curing times, at this stage, the market is also continuing to develop new resin materials to maximize the needs of various industries.
- The model itself. Assuming that the model itself is hollow, if there are not so many small details, the printing speed will be faster. In addition, also highlighted the placement of the model. Usually, it is placed vertically accordingly. Because light-cured 3D printers are height-based, vertical placement takes more time. The benefit of this is that the accuracy of each layer can be significantly improved, and it is good to get better molding results at the cost of speed.