3D printer head and 3D printer

Abstract

The invention provides a 3D printer head and a 3D printer. The 3D printer head comprises a printer head main body and a machine frame, wherein the printer head main body comprises a feeding end and adischarging end; a feeding cavity is formed between the feeding end and the discharging end, and two end parts of the feeding cavity are correspondingly in communication with the feeding end and the discharging end; a rotating shaft is arranged in the feeding cavity, the machine frame is connected with the top of the rotating shaft through a connecting block, and a material extruding mechanism isconnected with the bottom of the rotating shaft; a heating and melting mechanism is annularly arranged on the outer wall of the feeding cavity, a crushing mechanism is arranged on the inner wall of the printer head body, and the heating and melting mechanism is connected with the bottom of the crushing mechanism; and a pre-heating mechanism is arranged on the side portion of the discharging end, and the pre-heating mechanism is connected with the bottom of the heating and melting mechanism. The 3D printer is not limited to a feeding form, the bonding problem among printing layers are effectively improved, and bad bonding phenomena such as cracking, faults, warping and the like among the printing layers are solved.

Description

technical field [0001] The invention belongs to the technical field of 3D printing, and relates to a 3D printer head and a 3D printer, in particular to an FDM type 3D printer head and a 3D printer. Background technique [0002] 3D printing technology (3D printing), also known as three-dimensional printing technology, is based on digital model files, using powdered metal, non-metal powder or plastic and other bondable materials to construct objects by layer-by-layer printing. technology. [0003] 3D printing technology was first applied to plastic materials. FDM (Fused Deposition Modeling) Fused Deposition Modeling technology is the main method at present. It heats and melts the hot-melt material, and at the same time, under the control of the computer, the three-dimensional nozzle selectively coats the material on the working surface according to the information of the cross-sectional profile. On the stage, a layer of section is formed after rapid cooling. After one layer...

AI Technical Summary

Problems solved by technology

(b) Change the feeding method of the printer: feed the rod with a diameter of 6mm×150mm into the heating chamber through a unique feeding mechanism; secondly, in the connection between the printing layer and the printing layer, due to the thermal conductivity of metal / non-metal It is much higher than that of plastic materials, so when using metal / non-metal and binder for mixed feeding, the next layer of material is easy to solidify due to easy heat dissipation, resulting in poor bonding, breakage or separation of the upper and lower layers, which makes the product defects of the 3D printing process partial high

The current improvement method is to improve the temperature in the printer cavity by adjusting the temperature in the cavity, but the effect is limited, and the electronic components are easy to be damaged by high temperature, which affects the basic functions of electrical appliances

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