Introduction to photosensitive resin 3D printer

Definition: photosensitive resin 3D printer usually refers to SLA industrial 3D printer, which uses liquid resin as processing material, also known as UV curing 3D printer. According to different light sources, photosensitive resin 3D printers can be divided into SLA type and DLP type digital photosensitive printers.

 ；& nbsp；& nbsp；& nbsp； working principle:
 ；& nbsp；& nbsp；& nbsp； 1. The method used in SLA technology is to irradiate photosensitive resin with laser. According to the G code of the model slice, the laser head scans each layer of the model slice from point to line to surface, and then irradiates the photosensitive resin with a laser for rapid curing.
 ；& nbsp；& nbsp；& nbsp； 2. The light source used by DLP technology comes from the projector. The projector irradiates the model part as a plane image into the resin solution to cure it. By using this method, one surface is formed at a time, and the printing time depends only on the height of the object to be printed.
 ；& nbsp；& nbsp；& nbsp； Consumables:
 ；& nbsp；& nbsp；& nbsp； Photosensitive resin literally means a resin material sensitive to light, which solidifies rapidly under light irradiation. At a deeper level, photosensitive resin is a mixture of photoinitiator, monomer polymer and prepolymer, which can be cured under UV focusing at a specific wavelength. However, photosensitive resin materials are easy to harden and have certain toxicity if not used for a long time, so they need to be sealed and stored when not used.
 ；& nbsp；& nbsp；& nbsp； Characteristics of finished products:
 ；& nbsp；& nbsp；& nbsp； The products printed by photosensitive resin 3D printer have smooth surface and good molding quality, so many DLP models are classified as jewelry grade. Photosensitive resin is generally liquid. Objects printed with this material generally have the characteristics of high strength, high temperature resistance and water resistance.
 ；& nbsp；& nbsp；& nbsp； Operation process:
 ；& nbsp；& nbsp；& nbsp； The scraper of the photosensitive resin 3D printer is driven by the spiral guide rail to scrape the liquid resin, because the documents have been processed in layers on the computer to ensure that the thickness of each layer is the same. The liquid polymer used is photosensitive resin. 3D printing software controls the resin from liquid to solid when the material surface is irradiated by UV laser. The position of laser dot printing will harden the contact part, while the non-contact part will continue to remain liquid. Laser irradiation and scraper wipe make it smooth. These two steps are repeated. Each time you print one layer, the model drops one layer, and then you continue to print a new layer. The curing process of laser is the 3D printing process of photosensitive resin. These steps will be repeated until the model is completed. When the photosensitive resin 3D printer completes the printing process, the whole object is supported outside the resin tank by the support plate. The remaining liquid material remains in the resin tank. Necessary