Three-dimensional printer

Abstract

The invention provides a three-dimensional printer. The three-dimensional printer comprises a stander, a printing head moving mechanism, a supply unit and a printing head; the printing head comprises a feeding channel, a chamber, a rotor mechanism and a spray nozzle; one end of the feeding channel is connected with a supply unit, the other end of the feeding channel is connected with the chamber, a three-dimensional printing material in the supply unit is guided to the chamber of the printing head; one end of the chamber is connected with the feeding channel, and the other end of the chamber is connected with the spray nozzle; the rotor mechanism is arranged in the chamber, the rotor mechanism comprises a driving gear and a driven gear, and the peripheral part of the driving gear and the peripheral part of the driven gear are fit to the inner wall of the chamber. By adopting the printing head with a rotor, the printing material can be injected into the chamber of the printing head to realize the continuous printing; moreover, the tooth pitch of the rotor in the printing head is fixed, so that the printing precision can be guaranteed.

Description

technical field [0001] The invention relates to the technical field of three-dimensional printing, in particular to a three-dimensional printer. Background technique [0002] Three-dimensional printing technology has been widely used in various industrial fields, such as the application of existing technologies in plastic products and food molding. [0003] A common molding method of 3D printer equipment in the prior art is to divide the pre-set molded object model into multiple layers, and the molding materials discharged by the 3D printing equipment are stacked layer by layer on the printing platform according to the multiple layers , and finally form the shape of the pre-set molding. [0004] The feeding methods of 3D printing equipment in the prior art generally include the following two types: when printing plastic materials, the plastic materials are supplied in the form of coiled wires, and the plastic wires are supplied to the printing equipment to be melted in a l...

AI Technical Summary

Problems solved by technology

This printing method usually limits the molding material to plastics suitable for molding into wires, which not only limits the material of the molding but also increases the cost

For non-wire molding materials, the prior art usually uses a plunger pump to discharge the molding material. The structure of the plunger pump is similar to that of a common syringe, including a syringe and a plunger. The above-mentioned molding material is discharged by the pressure provided by the plunger; in this technical solution, due to the limitation of the volume of the syringe, the syringe needs to be replaced after printing, thus reducing the printing efficiency.

[0005] On the other hand, the print head in the prior art also has many problems in the control of the discharge accuracy of the molding material and the reliability of the work, and it is difficult to adapt to high-precision continuous printing

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