Solid material and liquid material combined dual-nozzle 3D printer and printing method thereof

Abstract

The invention discloses a solid material and liquid material combined dual-nozzle 3D printer and a printing method thereof. The dual-nozzle 3D printer comprises a frame, an XY side moving module, a Zaxis moving module, a carrying plate, a solid material printing unit, a liquid material printing unit and a master control module, wherein the solid material printing unit comprises a solid printing head module and a wire feeding module; the upper end of a wire feeding throat pipe of the solid printing head module penetrates through a fixed plate of a cooling module to communicate with a wire feeding channel in the XY side moving module; and the lower end of the wire feeding throat pipe extends into a circular through hole of a metal heating block to communicate with a solid nozzle. An articlecombining the solid material with the liquid material can be printed, or a solid material article or a liquid material article is individually printed, and dual-component liquid materials are mixedlyprinted, a feeding module and a printing speed of the liquid material are flexibly controlled, and the combined dual-nozzle 3D printer and the printing method are suitable for performing 3D printingon multiple materials comprising a thermosensitive or thermoset liquid material.

Description

technical field [0001] The invention relates to a 3D printing device and a printing method, in particular to a solid-liquid material combined double-nozzle 3D printer and a printing method thereof, belonging to the technical field of 3D printing. Background technique [0002] 3D printing is a rapid prototyping technology that builds objects by printing solid powder, liquid materials or polymer melt materials layer by layer based on digital model files. At present, there are many existing 3D printing technologies, including extrusion molding (fused deposition FDM and liquid direct writing LDW), photocuring molding (laser scanning SLA, projection curing DLP or polymer injection PolyJet) and powder coating molding. (laser sintering SLS / SLM or inkjet bonding 3DP), etc., among which extrusion 3D printing is the earliest and most widely used one. [0003] In the traditional extrusion 3D printing technology, the single-nozzle design is mostly used, and the technology is relatively...

AI Technical Summary

Problems solved by technology

However, whether it is a single-nozzle, double-nozzle or multi-nozzle design, most of the existing extrusion 3D printers only print a single type of material, such as using an FDM printer to print thermoplastic materials or using an LDW printer to print liquid materials. Simultaneously print composite objects containing thermoplastic solid materials and liquid materials, such as liquid silicone objects with plastic support structures or biomaterial objects with elastomeric skeleton structures, etc.

Moreover, most of the nozzle positions and nozzle heights in the prior art are fixed, and this traditional design will bring some problems: when a single nozzle moves rapidly in the non-printing area, its nozzle will often scratch the printed model, double nozzles or In the case of multiple nozzles, because the height of each nozzle is the same, when one nozzle is working, other nozzles will scratch the model and affect the printing quality

Although the above-mentioned existing technologies all involve the 3D printing of liquid materials and the design of dual nozzles, the height of the nozzles cannot be automatically adjusted, which will inevitably affect the printing quality, restricting the extrusion-type liquid material 3D printing technology and the solid-liquid material combined dual-nozzle 3D printing technology. Popularization of printing technology

[0006] Although there are many solutions related to 3D printing in the prior art, there is no dual-nozzle 3D printing device and its printing method that can print solid materials and liquid materials at the same time, and the nozzles can be automatically retracted, which restricts the printing process to a certain extent. 3D printing applications that need to print solid-liquid materials at the same time and ensure printing quality

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