Nozzle assembly for 3D printer

Abstract

The invention relates to a nozzle assembly for a 3D printer. The nozzle assembly comprises a glue dispenser adapter, a medical needle cylinder and a printing needle, one end of the medical syringe needle cylinder is open, and the other end is provided with the printing needle; the glue dispenser adapter includes a plug arranged at the end part position and a sealing piston sleeving the plug in a sealing manner, a through hole penetrating through the entire glue dispenser adapter is arranged in the glue dispenser adapter, an air guiding hole penetrating through the sealing piston is arranged, corresponding to the through hole, in the sealing piston, and the sealing piston is in sealing interference fit and detachable connection with the inner wall of the medical syringe needle cylinder. Compared with nozzle assemblies in the prior art, the nozzle assembly in the invention is more suitable for performing a sterilization operation, saves the manufacturing costs, and prevents mechanical contact from affecting the performances of a printing material.

Description

technical field [0001] The invention relates to the field of 3D printing, in particular to a nozzle assembly for a 3D printer. Background technique [0002] A 3D printer, also known as a three-dimensional printer, is a kind of accumulative manufacturing technology, that is, a machine of rapid prototyping technology. It is based on a digital model file and uses suitable printing materials to print three-dimensional Model. [0003] Currently, 3D printing technologies commonly used in biomanufacturing mainly include fused deposition manufacturing (FDM), selective laser sintering (SLS), inkjet printing, laser direct writing, extrusion deposition, droplet jetting and other forming technologies. Among them, extrusion deposition technology can be divided into motor extrusion deposition technology (MAM) and gas extrusion deposition technology (PAM). Motor extrusion deposition technology provides extrusion force through screw motor to extrude materials. Printing, gas deposition ext...

AI Technical Summary

Problems solved by technology

[0004] The existing gas extrusion deposition printing technology generally uses a dispenser syringe, also known as a Japanese syringe or an American syringe, which is generally provided with a sealing piston that can move along the length of the syringe. During the sterilization operation, if the sealing piston is used for sealing along the length direction of the syringe, when the sealing piston is pushed into the syringe of the dispenser, it is very inconvenient to take it out. The use of materials is very cumbersome, which limits the range of printing materials; in addition, researchers in the medical and biological fields are not accustomed to using dispenser syringes, but are more accustomed to using syringes, which also limits the promotion and use of 3D printers in different fields

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