3D printer head

Abstract

The invention relates to the technical field of 3D printing, in particular to a 3D printer head which comprises a conveying pipe; a sprayer mechanism is arranged at the lower end of the conveying pipe; a heating mechanism is arranged at the upper end of the sprayer mechanism; a radiating mechanism is arranged at the upper end of the heating mechanism; a feeding mechanism is arranged at the upper end of the radiating mechanism; a threaded surface is in threaded connection with a threaded ring; a spring pushes a fixing flat to move; the fixing flat drives a sealing sleeve to be clamped in a conical groove, so that a sprayer is in tight coupling with the conveying pipe; when the threaded ring and the threaded surface are loose to cause that a gap is generated between the sprayer and the conveying pipe, the spring pushes the fixing flat to move once more, and the fixing flat drives the sealing sleeve to be clamped in the conical groove once more, so that material is prevented from seepinginto the gap and is also prevented from being adhered to the sprayer and the conveying pipe, the situation that the sprayer cannot be taken down when the sprayer is changed is further prevented, and the situation that the sprayer is fixed and is inconvenient to detach is also prevented.

Description

technical field [0001] The invention relates to the technical field of 3D printing, in particular to a 3D printer head. Background technique [0002] 3D printing is a kind of rapid prototyping technology, also known as additive manufacturing. It is a technology based on digital model files and using bondable materials such as powdered metal or plastic to construct objects by layer-by-layer printing. , 3D printing is usually realized by using digital technology material printers. It is often used to manufacture models in mold manufacturing, industrial design and other fields, and is gradually used in the direct manufacture of some products. There are already zero parts printed using this technology. part. [0003] Existing 3D printers spray out materials to form objects through the nozzle, heat the material into a paste through the heating device inside the machine head, and then spray out the pasty material through the nozzle, depending on the needs of different objects, th...

AI Technical Summary

Problems solved by technology

[0004] For the 3D printer in the prior art, the material is ejected through the nozzle to form an object, and the material is heated into a paste through the heating device inside the head, and then the pasty material is ejected through the nozzle to meet the needs of different objects. The thickness of the ejected material will also change. Existing printers control the size of the nozzle hole by replacing the nozzle, and then change the thickness of the ejected material. However, the connection between the nozzle and the delivery pipe may become loose during long-term use, resulting in gaps As a result, the pasty material enters the gap, which leads to the problem that the nozzle is fixed and inconvenient to disassemble. The present invention provides a 3D printer head

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