A continuous fiber 3D printing device for integral molding of polygonal column structures

Abstract

A continuous fiber 3D printing device for the integral molding of polygonal column structures, including a three-axis 3D printer frame, a polygonal column mold, a clamping mechanism, and a cylinder translation and rotation mechanism, the polygon column mold is connected to the cylinder translation and rotation mechanism, and the cylinder translation and rotation mechanism Connected to the three-axis 3D printer frame; the polygonal column mold is clamped by the clamping mechanism, and the clamping mechanism is connected to the three-axis 3D printer frame; the cylinder translation and rotation mechanism includes an inner cylinder, an outer circular column with a spline on the end surface, and an outer The limit block, the inner cylinder is connected with the motor, and the motor is fixed on the Y-direction aluminum profile of the three-axis 3D printer frame; the curved groove on the inner cylinder matches the bump on the outer circular column, and one end of the outer circular column There are splines, and the splines are inserted into the corners of the end face of the polygonal column mold to realize the rotation of the polygonal column mold; the invention realizes continuous fiber printing and integral molding of the polygonal column structure.

Description

technical field [0001] The present invention relates to the technical field of continuous fiber 3D printing, in particular to a continuous fiber 3D printing device for integral molding of polygonal column structures. Background technique [0002] Fused deposition modeling (FDM) is widely used in the rapid prototyping process due to its wide range of molding materials, high utilization of raw materials, almost no pollution, and relatively simple post-processing. The emergence of fiber-reinforced resin-based composite materials, especially the composite technology of thermoplastic filament and continuous fiber, has greatly improved the strength of printed parts and further expanded the application range of FDM technology. [0003] But the addition of continuous fiber also further brings the difficulty of 3D printing. On the one hand, since the filaments extruded by FDM need to be piled up in a molten state, the strength of the printed part in the thickness direction is weak, ...

AI Technical Summary

Problems solved by technology

On the one hand, since the filaments extruded by FDM need to be piled up in a molten state, the strength of the printed part in the thickness direction is weak, resulting in columnar structural parts, such as energy-absorbing tubes, honeycomb interlayers, etc., which need to bear in the axial direction When the main load is applied, continuous fibers cannot play a reinforcing role, which greatly limits the application range of printed parts; on the other hand, due to the addition of continuous fibers, the print nozzle cannot move in empty space, because the fibers will be pulled out when moving , affecting the printing of parts, so it is difficult to achieve the overall printing of complex surface structures

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