Three-dimensional printer with high practicability

Abstract

The invention provides a three-dimensional printer with high practicability. The three-dimensional printer breaks through the structure mode of the traditional three-dimensional printer; meanwhile a heating component further heats a raw material between a conveying casing and a conveying pipe, so that the temperature and the flowability of a raw material on the outer side of the conveying pipe are higher than that of a raw material on the inner side of the conveying pipe, that is, the temperature and the flowability of a raw material flowing out from a lower discharging channel are greater than that of a raw material flowing out from a third channel; during printing, a heating inclined plane is in contact with a printing layer in the lower layer, which is slightly cooled and solidified, and the upper surface of the lower layer printing layer is molten; then the raw material flowing out from the lower discharging channel is underlaid between the raw material flowing out from the third channel and the lower layer printing layer with the surface being molten; the raw material flowing out from the lower discharging channel achieves gluing effect to fuse the raw material flowing out from the third channel and the lower layer printing layer into a whole body, so that an obvious connection plane cannot occur between an upper layer printing layer and the lower layer printing layer, and the connection between adjacent printing layers is firmer.

Description

technical field [0001] The invention relates to the field of three-dimensional printing machinery, in particular to a practical three-dimensional printer. Background technique [0002] Three-dimensional printers, also known as three-dimensional printers (3D Printer, 3DP for short), are a process of rapid prototyping (RP). Traditional printers print ink onto paper to form two-dimensional plane drawings, while 3D printers use liquid photosensitive resin materials, melted plastic filaments, gypsum powder, metal powder and other materials to achieve this by spraying binders or extruding. Layers are stacked and superimposed to form a three-dimensional solid. The structure of a unit printer is already known, such as Chinese invention patent 201310559350.7 disclosing a fused deposition 3D printing nozzle and a printer, wherein a fused deposition 3D printing nozzle includes a screw barrel, a nozzle, and a screw shaft, wherein the nozzle is mounted on a screw shaft The lower part o...

AI Technical Summary

Problems solved by technology

[0003] The invention can generate a stable driving force and effectively push the molten filament to be extruded from the nozzle. However, in actual use, the invention is the same as other 3D printers on the market. During the printing process of accumulating raw materials layer by layer, the upper and lower layers print There is a time difference in the accumulation of layers. When the upper printing layer is laid on the lower printing layer, the lower printing layer has been slightly cooled and solidified. The upper printing layer is only laid on the lower printing layer, and there is an obvious joint surface. Due to the incomplete fusion of layers, the integrity of the 3D printed product is poor, and it is easy to break from the joint surface, which has become one of the important defects of the 3D printed product, and the smoothness of conveying raw materials needs to be improved

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