3D printing dispensing extruding device capable of realizing online alloying

Abstract

The invention discloses a 3D printing dispensing extruding device capable of realizing online alloying. The 3D printing dispensing extruding device comprises an online dispensing mechanism and a plurality of molten metal extruding spray heads. The online dispensing mechanism comprises more than one storage compartment, a feeding device, a mixing compartment, an air supply device, an online molten metal component detection device and a PC. The six molten metal extruding spray heads are communicated to the bottom of the mixing compartment through conveying pipes, and a screw extruding mechanism is arranged inside each extruding spray head, so that the real-time controllable extrusion of the molten metal can be realized. In the working process, the current layer material information is firstly printed according to 3D, the preparation, mixing, melting and online detection of a metal raw material are carried out by the online dispensing mechanism, when the molten metal component meets the requirement, the molten metal is led into the extruding spray heads through conveying pipes on the lower end of the mixing compartment, and then the molten metal component is extruded by the screw extruding mechanism in each spray head to be scanned, printed and formed layer by layer. The 3D printing dispensing extruding device is reasonable in design and precise in dispensing and is suitable for online mixing and detection of multiple metal powder / particles, and the online alloying of 3D printer and the integrated formation of gradient material structural parts can be effectively achieved.

Description

technical field [0001] The invention belongs to the field of 3D printing, and in particular relates to a 3D printing ingredient extrusion device capable of realizing online alloying. Background technique [0002] 3D printing is a kind of rapid prototyping (RP) technology, and it has the most vitality. This technology is derived from the principle of discrete / stacking layered manufacturing technology, directly driven by the 3D CAD model, and uses the method of gradually adding materials to realize one-time rapid and precise manufacturing of arbitrary complex shapes and structural parts or molds. From the perspective of forming, it subverts the traditional manufacturing concept, breaks through the methods of removing forming (turning, milling, planing, grinding, pliers, etc.) and forced forming (forging, casting powder metallurgy, etc.), and opens up a new field of manufacturing. This technology is highly integrated and can realize rapid and flexible manufacturing of various ...

AI Technical Summary

Problems solved by technology

[0003] At present, based on selective laser sintering (Selective Laser Sintering, SLS), selective laser melting (Selective Laser Melting, SLM), laser near-net shaping (Laser Engineering Net Shaping, LENS) and electron beam selective melting technology (Electron Beam Selective Melting, EBSM ) and other existing mature technology 3D printing equipment are mostly used for rapid prototyping of single metal material parts. In terms of forming alloy materials, multiple materials and metal parts with material gradient structure, they have the problems of complex process, high cost and low efficiency. , at the same time it is impossible to realize continuous online batching and integrated forming of metal parts

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