Adjustable-flow 3D printing jet head

Abstract

The invention discloses an adjustable-flow 3D printing jet head, which comprises a jet head main body, a piston, a rotating disc and a heating cavity, wherein the top end inside the jet head main bodyis provided with a piston cavity; a heating cavity is arranged inside the jet head main body arranged under the piston cavity; a reserving cavity is arranged inside the jet head main body arranged under the heating cavity; a funnel-shaped discharging opening is formed in the bottom of the jet head main body arranged under the reserving cavity. Through the vertical movement of the piston, the continuous self-suction of raw materials is realized without machine halt for replacing a jet head device; the printing efficiency is improved; when one end of a screw rod penetrates through different inserting holes to be fixed with a rotating disc, the flow of the jet head can be changed; meanwhile, when the piston downwards moves, a fixing rod rotates; the raw materials can downwards move along external screws and are discharged out, so that raw materials inside the piston cavity generate an eddy current effect; similar stirring is performed; the raw materials are prevented from being solidified in the piston cavity; the heating efficiency of an electric heating pipe on the raw materials is also improved; the raw materials are prevented from generating wiredrawing at the funnel-shaped discharging opening after the jetting is completed.

Description

technical field [0001] The invention relates to the technical field of 3D printing nozzles, in particular to a 3D printing nozzle with adjustable flow rate. Background technique [0002] 3D printing (3DP) is a kind of rapid prototyping technology. It is a technology based on digital model files and using bondable materials such as powdered metal or plastic to construct objects by layer-by-layer printing. 3D printing It is usually realized by using digital technology material printers. It is often used to manufacture models in the fields of mold manufacturing and industrial design, and is gradually used in the direct manufacture of some products. There are already parts printed using this technology. Technology is used in jewelry, footwear, industrial design, architecture, engineering and construction (AEC), automotive, aerospace, dental and medical industries, education, geographic information systems, civil engineering, firearms, and other fields. [0003] The 3D printing ...

AI Technical Summary

Problems solved by technology

[0003] The 3D printing nozzle is an important part of 3D printing. The flow rate of the existing 3D printing extrusion head is fixed during the process of printing the workpiece. When the printing workpiece needs a larger extrusion volume, the nozzle needs to be replaced. At the same time, some of the current nozzles are designed for single use. The material in the barrel is limited and continuous printing cannot be achieved. It is necessary to stop the machine to replace the barrel, which seriously affects the printing efficiency.

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