The 3D printer is also called a three-dimensional printer (3DP), is a cumulative manufacturing technology, the rapid prototyping technology of a machine, it is a digital model file based on the use of special wax, powder metal or plastic and other fusible materials, through the printing of a layer of adhesive material to create three-dimensional objects. Three-dimensional printers are used to make products at this stage. The technique of constructing objects in a layered manner.
The principle of the 3D printer is to put data and raw materials into the 3D printer, the machine will be in accordance with the procedure to create a layer of products. The biggest difference between a 3D printer and a traditional printer is that it uses "ink" as a real raw material, with a wide variety of layers in the form of printed media, ranging from a wide range of plastics to metals, ceramics and rubber-like materials.
Some printers can also combine different media to make the printed object hard and soft on the other.
1, some 3D printers use "ink-jet" way. Even if a thin layer of liquid plastic is sprayed onto a mold tray with a printer nozzle, the coating is then treated under ultraviolet light.
The mould tray then drops the minimum distance for the next layer to stack up.
2, others use a technology called "melt forming", the whole process is to melt plastic in the nozzle, and then through the deposition of plastic fiber to form a thin layer.
3. Some systems use a technology called "Laser Sintering", which uses powder particles as a printing medium.
The powder particles are sprayed on the mould tray to form a thin layer of powder, cast into the specified shape, and then cured by a liquid binder that is sprayed out.
4, some use the electron flow in the vacuum to melt powder particles, when encountered with the complex structure including holes and cantilever, the media need to add gel or other substances to provide support or to occupy space. This part of the powder will not be cast, and finally only water or air to wash off the support can form pores.