A self-returning 3D printer

Abstract

The invention relates to the technical field of additive manufacturing equipment, and provides a self-material-returning 3-dimensional printer which comprises a housing, wherein a wire feed device is arranged on one outer side of the housing; a machine frame is arranged in the housing; an extrusion device and a platform device are arranged on the machine frame; the platform device comprises an upper platform and a lower platform which are arranged correspondingly; the upper platform comprises an upper platform board; a plurality of material returning holes are uniformly distributed in the upper platform board; a plurality of material returning pillars are arranged on the lower platform, correspond to the material returning holes, and penetrate the material returning holes correspondingly. During a material returning process, a lower platform board and the upper platform board move upwards alternately so as to separate workpieces from the upper platform board and the material returning pillars in sequence; as the corresponding parts of the upper platform board and the lower platform board are balanced in stress, not only are the workpieces prevented from being damaged while being separated from the upper platform board and the lower platform board, but also the adverse effect, caused by deformation of the upper platform board which is non-uniformly stressed, on the quality of follow-up products can be avoided effectively.

Description

technical field [0001] The invention relates to the technical field of additive manufacturing equipment, in particular to a self-returning 3D printer. Background technique [0002] 3D printing is the common name of additive manufacturing technology, known as "manufacturing technology with industrial revolution significance". 3D printing technology can be applied in many disciplines, and has been applied in aerospace, military industry, automobile, home appliances, biomedicine and other fields, and has broad development prospects. [0003] FDM (Fused Deposition Modeling, fused deposition rapid prototyping technology) is currently the most widely used 3D printing technology. The 3D printer using FDM technology uses linear consumables, which are melted and deposited on the working platform. This kind of 3D printer has a relatively simple structure, low manufacturing, use and maintenance costs, and low material costs. Therefore, this kind of 3D Printers have the widest range o...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a self-returning 3D printer, which aims to solve the problem of the existing FDM type 3D printers due to the high degree of adhesion between the workpiece and the working platform, and the manual removal of the workpiece causes uneven force on the workpiece, resulting in damage to the workpiece or printing. The problem of platform deformation

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