3D printer, also known as 3D printer (3DP), is a cumulative manufacturing technology, a machine for rapid prototyping. It is a digital model file based on special wax, powder metal or plastic. Material that creates a three-dimensional object by printing a layer of bonding material. At this stage, 3D printers are used to manufacture products. The technique of constructing objects by layer-by-layer printing. The principle of the 3D printer is to put the data and raw materials into the 3D printer, and the machine will build the products layer by layer according to the program.
The biggest difference between 3D printers and traditional printers is that the "ink" used is a real raw material. There are many types of stacked thin layers, which can be used to print a wide variety of media, from plastics to metals, ceramics and rubber. Class of substances. Some printers can also be combined with different media to make the printed object hard and soft at the other end.
1. Some 3D printers use the "inkjet" method. That is, a very thin layer of liquid plastic material is sprayed onto the mold tray using a printer nozzle, which is then treated under ultraviolet light. The mold tray is then lowered by a very small distance for the next layer to be stacked.
2. There is also a technique called "fusion molding" in which the entire process is to melt the plastic in the nozzle and then form a thin layer by depositing plastic fibers.
3. Some systems use a technique called "laser sintering" that uses powder particles as the printing medium. The powder particles are sprayed onto a mold tray to form an extremely thin layer of powder, cast into a specified shape, and then cured by a sprayed liquid binder.
4. Some use the flow of electrons in a vacuum to melt the powder particles. When encountering a complex structure containing holes and cantilevers, a medium or a substance is added to the medium to provide support or to occupy space. This part of the powder will not be cast, and finally the pores can be formed by simply flushing the support with water or air.