3D printer head capable of feeding silk steadily

Abstract

The invention discloses a 3D printer head capable of feeding silk steadily; the 3D printer head comprises a base; a feeding channel is arranged on the base; a printing head is connected to the discharging end of the feeding channel; a U-shaped silk feeding wheel is rotatably arranged on the base corresponding to one side of the feeding channel; a silk feeding clamping wheel is rotatably arranged on the feeding channel corresponding to the other side of the U-shaped silk feeding wheel in a locating manner; a U-shaped elastic rubber gear ring matched with the wheel surface sleeves the wheel surface of the U-shaped silk feeding wheel; a circular elastic rubber gear ring sleeves the wheel surface of the silk feeding clamping wheel; a first crossed area exists between the periphery of the feeding channel and a U-shaped toothed groove; and the area of the first crossed area is in the deformation range of the U-shaped elastic rubber gear ring. The 3D printer head capable of feeding silk steadily disclosed by the invention is reasonable in structural design and capable of feeding silk steadily and reliably, and is beneficial to increasing FDM (Frequency-Division Multiplexing) printing efficiency and quality.

Description

technical field [0001] The invention belongs to the field of 3D printing, and specifically refers to a nozzle of a 3D printer with stable filament output. Background technique [0002] 3D printing technology appeared in the 1980s, also known as "rapid prototyping technology". Its biggest advantage is that any object can be directly generated from the graphic data designed by the computer without machining or grinding tools, thereby greatly shortening the product development cycle, improving productivity and reducing production costs. Therefore, it is widely used in art and industry. 3D printing technology, according to its different molding methods, can be divided into stereolithography (stcmolithography, SLA), laminated object manufacturing (Laminated Object Manufacturing, LOM), selective laser sintering (SelectiUe Laser Sintering, SLS), fused deposition manufacturing (Fused Deposition Modeling, FDM), etc. Among them, the most essential difference between the FDM rapid p...

AI Technical Summary

Problems solved by technology

[0008]1. The structure of the improvement method is complicated and the cost increases

For example, the structure of the feeding device is more complicated after the spring is added; the structure of the double-hole nozzle increases the cost

[0009]2. The improvement effect is not good. For example, in the improvement of the wire feeding structure in CN203449611U and CN203611389U, the hard acute angle gear vertex on the wire feeding wheel is affected by the reaction of the spring Under the force, the contact area between the top corner of the gear and the wire material is very small, resulting in an increase in the pressure of the gear on the wire material

This will lead to uneven filament discharge from the nozzle

If the slag of the wire material cannot be cleaned in time, the slag of the wire material will remain in the gap between the gear and the gear of the wire feed gear during the rotation of the wire feed wheel for a long time, causing the silk material to slip , resulting in intermittent and severe silk output, which greatly reduces the stability of the silk output;

[0010]3. In CN203665959U's improvement of the nozzle, the mutual switching of the dual-hole nozzle will lead to a change in the position of the wire outlet, resulting in a decline in printing quality

Moreover, when a large amount of material is solidified at the nozzle opening, the switching valve will not work, and the printer will not be able to produce filaments.

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