Multi-material 3D printing device with replaceable nozzles

Abstract

The invention discloses a multi-material 3D printing device with replaceable nozzles. A top cover is fixed on an upper port of a feeding cylinder; a heating rod is arranged at the bottom surface of the top cover; a temperature sensor is arranged on the side surface of the heating rod; a throat pipe is obliquely inserted into the outer side wall of the feeding cylinder; the fed materials are injected into a heat insulation pipe of a central through hole of the throat pipe; the lower end surface of the feeding cylinder is eccentrically and fixedly connected to the top surface of a fixed disc; through holes of the fixed disc communicate with the feeding cylinder; a rotating disc is connected below the fixed disc in a hinged mode; a plurality of communication holes are formed in the rotating disc along the circumference; the lower hole end of each communication hole is connected with a corresponding nozzle; a driving motor is arranged on the edge of the top surface of the fixed disc; the groove wall of a circular groove is provided with gear rings; a gear of the driving motor and the gear rings are engaged to form a gear rack pair; and the different communication holes of the rotatingdisc respectively communicate with the through holes of the fixed disc in a matching mode. According to multi-material 3D printing device with replaceable nozzles, the nozzles with different specifications are replaceable according to the requirements of model precision and feeding of different materials, different materials can be used, the heating rod is in contact with the materials, the heating efficiency is high, the temperature can be accurately controlled, and the printing efficiency is higher.

Description

technical field [0001] The invention relates to a 3D printing device, especially for an adaptive layering method, capable of using a variety of wire materials and switching different nozzles according to different printing requirements. Background technique [0002] In practical applications, different parts of the same part may have different properties. For 3D printed models, different parts may need to be printed with different materials to meet the requirements. In the method of processing the model before printing, there is a method of layering by region, and the model is printed by region. The layer thickness, surface accuracy and mechanical properties of the model in different regions are different. Whether the printer can print a variety of The material and whether the operation is complicated will affect the printing time and printing effect. The printer can print a variety of materials, which will shorten the refueling time and speed up the printing speed. [0003...

AI Technical Summary

Problems solved by technology

Based on the above situation, the current printer has some defects. First, for models that require different materials, it is necessary to stop and replace the wire during the printing process, which increases the printing time; second, the wire of different materials has requirements for the diameter and material of the nozzle, which may cause The nozzle is clogged; 3. A single nozzle cannot adapt to different printing requirements. For the adaptive layering method, it is relatively difficult to print the same model with different layer thicknesses

In addition, the size of the nozzle is different, the printing accuracy and time-consuming are different, and it is difficult to adjust in a single printing process

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