Sprayer for consumable items of 3D printer

Abstract

The invention provides a sprayer for consumable items of a 3D printer. The sprayer for the consumable items of the 3D printer comprises guiding pipes, a spray nozzle, a material conveying pipe and a plurality of holes, wherein the guiding pipes comprise a first pipeline used for guiding in the consumable items for use, a second pipeline used for making low pressure or guiding in cleaning gas, and a third pipeline used for guiding in cleaning liquid; the spray nozzle is provided with a cavity in the shape of a circular truncated cone, and a spraying port, and the spray nozzle is located at the lower end of the guiding pipes and is provided with a dividing face; the material conveying pipe extends to the position below the dividing face from the guiding pipes, the pipe bottom face of the material conveying pipe is located above the spraying port, and the lower end face of the material conveying pipe is spaced from the wall face of the spray nozzle; the material conveying pipe is provided with an inner layer pipe wall and an outer layer pipe wall, the inner pipe wall forms an inner cavity, the outer pipe wall and the inner pipe wall form an outer cavity, the outer cavity is closed on the pipe bottom face to form an outer cavity bottom wall, and the inner cavity is provided with an opening in the pipe bottom face to form a consumable item outputting port; and the holes surround the periphery, close to the outer cavity bottom wall, of the outer pipe wall, and the cleaning gas or the cleaning liquid can be discharged out of the holes and is used for cleaning the spraying port or the sprayer.

Description

technical field [0001] The invention relates to the field of printers, in particular to a consumable nozzle structure for preventing nozzle clogging of a 3D printer. Background technique [0002] The biggest difference between a 3D printer and a traditional printer is that the "ink" it uses is a real raw material. There are various forms of stacking thin layers, and there are various types of media that can be used for printing, from a variety of plastics to metals, ceramics and rubber. class of substances. Some printers can also combine different media so that the printed object is hard on one end and soft on the other. [0003] Some 3D printers use an "inkjet" method. That is, a very thin layer of liquid plastic substance is sprayed onto the casting tray using a printer nozzle, and this coating is then exposed to ultraviolet light for treatment. The mold tray is then lowered a very small distance for the next layer to be stacked up. [0004] Others use a technique call...

AI Technical Summary

Problems solved by technology

[0007] However, the consumables used above are all in the form of paste or solid powder, which can easily block the nozzles of the nozzles and affect the printing effect.

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