3D (Three-Dimensional) printer based on rotation and continuous extrusion of threaded rod

Abstract

The invention discloses a 3D (Three-Dimensional) printer based on rotation and continuous extrusion of a threaded rod. The 3D printer comprises a shell, an extruding mechanism, a lifting mechanism, a working platform and sliding rails, wherein the working platform is mounted at the lower part inside the shell through the sliding rails; the extruding mechanism is mounted inside the shell through the lifting mechanism, and is positioned above the working platform; the extruding mechanism comprises a machine barrel, a motor, a feed hopper and at least one threaded rod, the machine barrel comprises a conveying part, a transition part and an extrusion part, and the conveying part, the transition part and the extrusion part are connected in sequence from the material moving direction; the conveying part and the motor are both mounted at the lifting mechanism; the threaded rod is mounted at the inner cavity of the conveying part, and one end of the threaded rod is connected with a rotating shaft of the motor; the feed hopper is mounted on the conveying part. The 3D printer is good in stability and good in continuity, and different types of printing materials can be used; meanwhile, an additive can be added to the printing material during printing, so that the printing material is improved.

Description

technical field [0001] The invention relates to a 3D printer, in particular to a 3D printer based on screw rotation and continuous extrusion. Background technique [0002] 3D printing is a widely used rapid prototyping technology at present. The principle of its forming process is: first establish a computer 3D model of the target part, and then use software to process the 3D model in layers and slices to obtain the data information of each processing level. Under the control of the computer, the laminated additive manufacturing is carried out according to the information at the slice level to complete the manufacturing of the target processing. The advantage of 3D printing is that it is not limited by the complexity of the shape of the part, does not require any tooling and molds, is fast and efficient, and can realize the automatic manufacturing of free-form entities, which is receiving more and more attention. [0003] 3D printing currently has several different main tec...

AI Technical Summary

Problems solved by technology

Although the above-mentioned 3D printers can complete the printing work, they have the following defects: 1. When using the above-mentioned printers for printing jobs, the selection of printing materials is relatively limited, and users cannot improve the printing materials themselves, such as It is impossible to add improved materials such as antibacterial agents, which will not meet the specific needs of users; 2. The FDM printer in the above-mentioned 3D printing technology has poor stability and poor continuity of printing materials, resulting in instability when extruding materials and poor printing effect. Poor; 3. The same 3D printer cannot use a variety of different materials. For example, FDM can only use hot-melt wires, and SLS can only use hot-melt powder materials, but cannot use viscous liquid thermosetting materials, so the materials are universal. Poor performance, unable to meet the different needs of users

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