Continuous fiber 3D printing device for integral forming of polygonal column structure

Abstract

A continuous fiber 3D printing device for integral forming of a polygonal column structure comprises a three-axis 3D printer frame, a polygonal column mold, a clamping mechanism and a cylinder translation rotating mechanism, the polygonal column mold is connected with the cylinder translation rotating mechanism, and the cylinder translation rotating mechanism is connected to the three-axis 3D printer frame. The polygonal column mold is clamped through the clamping mechanism, and the clamping mechanism is connected to the three-axis 3D printer frame. The cylinder translation rotating mechanism comprises an inner cylinder, an outer circular ring cylinder with splines on the end face and an outer limiting block, the inner cylinder is connected with a motor, and the motor is fixed to a Y-direction aluminum profile of the three-axis 3D printer frame. A curve groove in the inner cylinder is matched with a convex block on the outer circular ring column, one end of the outer circular ring column is provided with a spline, and the spline is inserted into the corner angle of the end face of the polygonal column mold to achieve rotation of the polygonal column mold. Continuous fiber printing and integral forming of the polygonal column structure are achieved.

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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