A nozzle device and control method for architectural 3D printing

Abstract

The invention relates to a nozzle device for building 3D printing and a control method. The device comprises a square port module and a steering module; and the steering module comprises a motor fixedframe, a steering motor, a coupling, a transmission shaft, a driving gear and a driven gear. The steering motor, the coupling, the transmission shaft and the driving gear are connected in sequence; the steering motor is mounted on the motor fixed frame; the driving gear is engaged with the driven gear; the square port module comprises a square nozzle, an inner ring, an outer ring and a sleeve; the square nozzle is mounted at the lower end of the inner ring; the outer ring is embedded at the upper end of the inner ring, and is connected with the sleeve; the motor fixed frame is fixed on the sleeve; and the driven gear is engaged in the inner ring. Compared with the prior art, the device precisely controls free steering of the square port module, can always maintain a tangential state between the angle of the square nozzle and a printing path, preferably solves the arc layering problem on the outer surface of a wall caused by printing through a circular port nozzle, and improves the overall surface quality of the wall.

Description

technical field [0001] The invention relates to the field of architectural 3D printing, in particular to a nozzle device and a control method for architectural 3D printing. Background technique [0002] Architectural 3D printing is a technology that builds houses by extruding concrete materials and printing them layer by layer based on digital models. Due to the superiority of 3D printing technology, it has great application potential in the construction field. At present, the nozzles used for architectural 3D printing can be divided into circular nozzles and square nozzles according to their cross-sectional shapes. At present, when most of the circular nozzle nozzles used for architectural printing, the building materials are extruded through the circular nozzle nozzle, it will form an obvious arc-style layering on the outer surface of the building wall, which affects the building wall to a certain extent. surface quality. When using a square mouth module, it is necessar...

AI Technical Summary

Problems solved by technology

However, this structure has the following problems: 1. The 3D printing nozzle used for construction is different from ordinary desktop 3D printing. It has a large volume, and it is very difficult to implement it with a complex structure. It is impossible to effectively control the nozzle in the form of a dial Rotation; 2. The rotary dial can easily drive the nozzle to rotate immediately, but it is difficult to control the rotation angle, and it is impossible to achieve fine rotation control, so that the nozzle can completely fit the printing path

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