Variable-precision screw-extruding additive manufacturing equipment with stirring and anti-blocking functions

Abstract

The invention discloses variable-precision screw-extruding additive manufacturing equipment with stirring and anti-blocking functions. The equipment comprises a three-dimensional movable platform andextrusion units arranged on the three-dimensional movable platform. Each extrusion unit comprises a first motor, a gearbox, a storage bin, a stirring part, a screw, a plunger, a cylinder and a discharging nozzle, wherein the first motor is connected with the gearbox; the bottom of the gearbox is connected with one end of the storage bin; the stirring part is arranged in the storage bin; the screwcomprises a fixing part and a threaded part and penetrates through the storage bin and the cylinder, one end of the screw is connected with the stirring part through the fixing part, the other end ofthe screw is connected with the plunger through the threaded part, an output shaft of the gearbox is connected with the fixing part, the bottom of the storage bin is connected with one end of the cylinder, and the bottom of the cylinder is connected with the discharging nozzle. With the adoption of the equipment, the problems of low efficiency, high material cost and the like in traditional additive manufacturing are solved, and various materials such as engineering plastics, building materials, high-viscosity energetic materials, metal slurry, and ceramic slurry can be formed.

Description

technical field [0001] The invention belongs to the field of additive manufacturing, and in particular relates to a screw extrusion variable precision additive manufacturing equipment with stirring and anti-blocking functions. Background technique [0002] In recent years, additive manufacturing technology has highlighted the blowout development, and various forms of 3D printing equipment have been launched one after another. However, reducing cost and improving precision are still a major limitation to the widespread application of additive manufacturing. Selected metal laser sintering (SLM), electron beam melting forming (EBM) or near-net forming (NNSF) have high index requirements for raw materials, and the cost remains high. At the same time, there is an essential contradiction between forming efficiency and forming accuracy. The additive manufacturing of engineering plastics, building materials, energetic materials, metal pastes, ceramic pastes and other materials is o...

AI Technical Summary

Problems solved by technology

However, FDM generally uses wire materials, and certain restrictive processing is required for raw materials.

The extrusion discharge method still requires relatively high fluidity or fluidity of the material, and it is prone to blockage, resulting in unsuccessful or uneven material delivery.

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