Expandable multi-material sprayer system for 3D (Three-Dimensional) printing

Abstract

The invention discloses an expandable multi-material sprayer system for 3D (Three-Dimensional) printing. The system comprises a base, a plurality of wire feed units and a driving unit, wherein each wire feed unit comprises a connecting rod, a nozzle, a first wire feed wheel, a second wire feed wheel and an electromagnet; one end of each connecting rod is hinged on one side of the base through an installation base; the second wire feed wheels of the wire feed units are installed on the base through one rotary shaft; the first wire feed wheels and the nozzles are installed on the connecting rods; a plurality of electromagnets corresponding to the other ends of the connecting rods are fixedly arranged on the base; the driving unit for driving the rotary shaft to rotate is installed on the base. According to the system disclosed by the invention, on the premise of not adding the quantity of motors, the wire feed units can be expanded according to demand; whether each wire feed unit works or not is randomly controlled; the nozzles on the wire feed units in work are lower than other nozzles in a non-working state in position when the connecting rods swing downward, so that the surface of a part in the process of 3D printing by the nozzles in the non-working state is prevented from being scratched and damaged.

Description

Technical field: [0001] The invention relates to the technical field of 3D printing, in particular to a multi-channel wire feeding mechanism for 3D printing. Background technique: [0002] The FDM process is a kind of 3D printing technology, which uses a wire extrusion mechanism to realize three-dimensional additive manufacturing by controlling the trajectory of the extrusion head. The extrusion head is generally single-channel, and can only print one color or one diameter of filament. To achieve color or multi-material printing, multiple print heads must be arranged and assembled together. The motor attached to each print head leads to a larger overall size of the print head, which affects the effective molding size. And the height of each print head is the same and fixed, and the non-working print head will scratch the formed surface to reduce the quality of the forming, and even cause the forming to fail. Invention content: [0003] The object of the present invention...

AI Technical Summary

Problems solved by technology

In order to achieve color or multi-material printing, multiple print heads must be arranged and assembled together. The motor attached to each print head causes the overall size of the print head to be too large, which affects the effective molding size.

And the height of each print head is the same and fixed, the non-working print head will scratch the formed surface and reduce the quality of molding, and even lead to molding failure

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