Novel quick printing spray head

Abstract

The invention discloses a novel quick printing spray head. The novel quick printing spray head comprises an extruding tube which is vertically arranged, a screw which is inserted into the extruding tube, a stock holder for storing printing materials, a ring-shaped spray nozzle, a movable valve, a motor for driving the screw to rotate, a motor for driving the valve to move, and a heating apparatuson the outer wall of the spray nozzle, wherein the movable valve is mounted inside the spray nozzle; the movable valve is connected to the motor for driving the valve to move through a rolling ball lead screw, and the motor can be controlled to drive the movable valve to move, so that the opening dimension of the spray nozzle can be changed. The novel quick printing spray head can change length ofthe spray nozzle in real time according to dimension changes of a model, increases the printing range of the spray nozzle, changes conventional dot printing into linear printing, and realizes once printing forming of each layer, so that printing speed is greatly increased; cooling time, in air, of each layer of the printing materials sprayed out by the spray nozzle is greatly reduced, and layerscan be guaranteed to be connected more tightly, so that strength of a printed part is greatly improved.

Description

technical field [0001] The invention mainly relates to the field of 3D printing, in particular to a novel fast printing nozzle. Background technique [0002] Fused filament deposition technology is a common 3D printing technology. It heats and melts filamentous hot-melt materials, squeezes them out through a nozzle with a fine channel, and deposits them on the workbench after being ejected from the nozzle. It begins to solidify when it is lower than the solidification temperature, and finally forms a finished product through the accumulation of layers of materials. The nozzle is the core component of fused filament deposition printing, but most of the extruding nozzles of the existing fused filament deposition 3D printer printing nozzles are circular nozzles with a fixed inner diameter and section shape, which belong to dot printing, the printing speed is slow, and the image of stripes is serious , often resulting in print strength that cannot be guaranteed. Contents of t...

AI Technical Summary

Problems solved by technology

The nozzle is the core component of fused filament deposition printing, but most of the extruding nozzles of the existing fused filament deposition 3D printer printing nozzles are circular nozzles with a fixed inner diameter and section shape, which belong to dot printing, the printing speed is slow, and the image of stripes is serious , often leading to print strength can not be guaranteed

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