A 3D printer extrusion system that automatically switches printing

Abstract

The invention discloses an automatic switching printing 3D printer extrusion system. An automatic switching printing 3D printer extrusion system includes a substrate, a switching component, a driving wheel, an extrusion head component and a feeding motor. The driving component includes and feeding The switching rotating rod connected to the switching seat and the switching rod for driving the rotation of the switching rotating rod, the switching rotating rod includes two end points at the top, and the switching rod is slidingly arranged on the base plate along the tangential direction of the rotation of the switching rotating rod, so The switching rod is provided with two openings along its sliding direction, the two end points are respectively protruded from the two openings, and a push block is spaced between the first opening and the second opening. When the switching rod is pushed, the push block pushes The toggle lever is turned. The switching mechanism designed by the invention can realize automatic alternate printing of two kinds of silk materials only by the left and right movement of the switching rod, which greatly reduces the weight and cost of the extrusion system and improves the printing accuracy.

Description

technical field [0001] The invention relates to a three-dimensional printer based on a fusion deposition rapid prototyping process, in particular to a 3D printer extrusion system for automatically switching printing. Background technique [0002] The 3D printer based on the fused deposition rapid prototyping process uses plastic filaments with a diameter of about 1-2 mm, and melts and extrudes the plastic filaments into filaments of about 0.2-0.4 mm through a computer-controlled printing extrusion head and scans them layer by layer. Print stacks into three-dimensional objects. Existing extrusion systems of 3D printers mostly use a single print head. This extrusion system has a simple structure and has great advantages in printing single-material models without support. However, in practical applications, the fusion deposition rapid prototyping process has a Objects with cantilever structures need to be supported. If the 3D printer only has a single print head, the printed ...

AI Technical Summary

Problems solved by technology

However, the switching mechanism of existing dual-nozzle printers is a cumbersome mechanical structure. The whole structure greatly increases the weight of the nozzle assembly. During the printing process of the printer, the increase in the weight of the nozzle assembly will greatly affect the printing accuracy and printing efficiency of the printer. , and even affect the service life of the core components of the printer

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