First, SLA photocuring 3D printer
The forming principle of SLA is mainly to use ultraviolet light as light source, and then control it by vibrating mirror system, so that it can draw the shape of the object on the surface of liquid resin first, then drop the object to a certain distance, and then immerse the platform in liquid resin, and so on, forming entity printing.
Second, DLP photocuring 3D printer
The basic principle of DLP molding is that the model is cut horizontally into layers by 3D printing software, and then the shape of the first layer model of resin is projected, and then the three-dimensional mask aligner, the first layer model, will slightly increase objects, and project the shape of the next layer model onto the resin, and so on, and print the model layer by layer.
Third, LCD light-cured 3D printer
In fact, the principles of LCD and DLP are basically similar, but the difference is that the light source of DLP is replaced by LCD. Based on the imaging principle of liquid crystal panels, the red, green and blue primary colors of the filter are used to filter out infrared rays and ultraviolet rays that are harmful to the liquid crystal panels, and the three liquid crystal panels are projected into three primary colors.
4. Comparison of three molding technologies
Molding speed: DLP & gtLCD & gt service level agreement
Printing accuracy: DLP & gtSLA & gtLCD & gt frequency-division multiplexing.
Print size range: SLA & gtDLP & gt LCD display
Material range: (DLP≈LCD) > service level agreement
Service life of main components: DLP≈SLA & gt；; liquid-crystal display
Machine price: SLA & gtDLP & gt LCD display.
Consumables price: SLA≈DLP≈LCD
By contrast, the situation is also clear at a glance. I believe everyone knows how to choose to buy a light-cured 3D printer in the future.