Concrete 3D printer nozzle with variable diameter

Abstract

The invention discloses a concrete 3D printer nozzle with the variable diameter. The concrete 3D printer nozzle comprises a material storage system, a transport system and a variable-diameter system,wherein the variable-diameter system is connected with the material storage system, materials are supplied to the material storage system through the transport system, the variable-diameter system comprises a bottom plate, a base, a variable-diameter motor gear, a variable-diameter motor, a cover plate, a large inner gear, a plurality of variable-diameter blades and small gears with the same number as the variable-diameter blades, an output shaft of the variable-diameter motor is connected with the variable-diameter motor gear, during mounting, inner teeth on the large inner gear can be fitlyand internally engaged with the small gears fixed to the base, the lower surface of the large inner gear is contacted with the disc surface of a large diameter part of the base, transmission teeth onthe large inner gear are externally engaged with the variable-diameter motor gear, a short column on the cover plate fitly penetrates out of a corresponding arc-shaped through groove in the large inner gear and is fixed, and the arc-shaped through groove in the large inner gear rotates under constraint of the short column; and the variable-diameter blades can be rotatably opened and closed. According to the concrete 3D printer nozzle, the magnitude of the diameter of the nozzle can be changed in real time, and continuous change of the diameter of the nozzle is achieved.

Description

Technical field [0001] The invention relates to the field of 3D printers, in particular to a concrete 3D printer nozzle with a variable diameter. Background technique [0002] As an additive manufacturing method, 3D printing has been increasingly used in people’s lives, especially in the construction field. Concrete, as one of the most common building materials, is the mainstream application of 3D printing in the construction industry. material selection. At present, concrete 3D printing has shown the potential to build large components. [0003] The 3D printer nozzle is the core of the 3D printing equipment. The function of the nozzle is to store materials, and the most important thing is to convey and extrude materials, which has a vital influence on 3D printing. The size of the nozzles of the existing 3D printers is mostly fixed. When the printed model has a complicated outer contour and a certain hollow structure inside, it is necessary to disassemble and replace the 3D print...

AI Technical Summary

Problems solved by technology

The size of the existing 3D printer nozzles is mostly fixed. When the printed model has complex external contours and a certain hollow structure inside, it is necessary to disassemble and replace the 3D printer nozzles to adapt to different printing accuracy, which affects efficiency and destroys 3D printing. continuity

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