Hot melting, stirring and extruding integrated 3D printing nozzle and work procedure thereof

Abstract

The invention relates to a hot melting, stirring and extruding integrated 3D printing nozzle and a work procedure thereof. The hot melting, stirring and extruding integrated 3D printing nozzle comprises a charging barrel, a stirring paddle, a piston, an air cylinder and a servo motor, and a heating barrel is arranged outside the charging barrel; the charging barrel is of a structure with a sealedbottom and an open top, a discharge hole connected with a needle is formed in the center of the bottom of the charging barrel, and the cross section of an inner cavity of the charging barrel is segment-shaped; the stirring paddle is driven by the servo motor, the piston is in a segment shape matched with the inner cavity of the charging barrel, the piston is in threaded connection with the stirring paddle, and the piston is provided with a limiting hole matched with a piston rod of the air cylinder; the servo motor drives the stirring paddle to rotate to stir materials, and meanwhile, the piston rotates along with the stirring paddle; the piston rod of the air cylinder extends into the limiting hole of the piston to limit circumferential movement of the piston, at the moment, the servo motor drives the stirring paddle to rotate, the piston moves downwards along the stirring paddle, and stirring and extruding of the materials are achieved. By the adoption of the nozzle, the technological links can be connected in a high-temperature environment, implementation is quite convenient, and the nozzle has wide market space.

Description

technical field [0001] The invention relates to a 3D printing nozzle, in particular to a hot-melt stirring and extruding integrated 3D printing nozzle and its working process. Background technique [0002] The core of tissue engineering is to establish a three-dimensional space structure composed of cells and biomaterials and form a living tissue with vitality. While the functional cells in the tissue are proliferating and dividing, the three-dimensional scaffold built by biomaterials is gradually degraded, so that the damaged tissue Perform morphological, functional and structural reconstruction and form permanent organ replacements. [0003] In the preparation process of tissue engineering scaffolds, fused deposition 3D printing technology is an effective technical means. The raw materials used are usually granular materials or wire-like materials, and the wires are fed into the heating nozzle of the printer through the feeding device during use. , the material is melted ...

AI Technical Summary

Problems solved by technology

Because such materials often have extremely high temperature-sensitive properties, the connection of such process links needs to be carried out in a high-temperature environment, and there are certain difficulties in specific implementation.

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