3D printer screw extrusion device

Abstract

The invention relates to a 3D printer screw extrusion device comprising a printer rack, a stock bin, a stepping motor, a screw, an upper heating device, a spray head, a printer bottom plate, a lower heating device, an air compressor and a pressure gauge, an air inlet hose is connected to an opening in the upper end of the stock bin, the air inlet hose is connected with the pressure gauge and the air compressor, and a feeding hose is connected to an opening in the lower end of the stock bin. The feeding hose can enable slurry to enter the screw extrusion device, the air compressor needs to be started during printing, gas pressure is controlled through reading of the pressure gauge, a piston in the stock bin generates thrust, and it is guaranteed that the screw is filled with the slurry all the time. When printing begins, under the driving of the stepping motor, the screw rotates to generate axial component force to achieve slurry conveying, so that the slurry flows out of the spray head and is cured through the heating devices.

Description

technical field [0001] The invention relates to an extrusion device, in particular to a screw extrusion device for a 3D printer, and belongs to the technical field of three-dimensional printing and molding. Background technique [0002] 3D printing manufacturing technology, also known as additive manufacturing technology, is an emerging technology that is rapidly developing in the manufacturing industry. This technology has been used in aerospace technology, automobile and home appliance manufacturing, biomedicine, food processing and other fields. Due to the mechanical, physical and chemical properties of ceramic material parts such as high compressive strength, high hardness, high temperature resistance and poor conductors of electricity and heat, they can meet the requirements of working in complex working conditions and harsh working environments. 3D ceramic printing technology is currently It has been used to a certain extent. As a key device for ceramic 3D printers, t...

AI Technical Summary

Problems solved by technology

Due to the mechanical, physical and chemical properties of ceramic material parts such as high compressive strength, high hardness, high temperature resistance and poor conductors of electricity and heat, they can meet the requirements of working in complex working conditions and harsh working environments. 3D ceramic printing technology is currently It has been applied to a certain extent. As a key device for ceramic 3D printers, the slurry extrusion device has structural parameters that have a crucial impact on the molding accuracy and printing efficiency of printed products. However, due to the complex shape of some mechanical parts and the hard and brittle characteristics of ceramic materials As a result, it is difficult to cut and process. At the same time, the current 3D ceramic printer slurry extrusion device often has problems such as discontinuous, unstable, and prone to material breakage and excessive output during the printing process, which further hinders the development of ceramic printing technology. Applications in the field of 3D printing

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