Nozzle device and method of use for 3D printing concrete on pile foundation
A 3D printing and 3D printer technology, applied in basic structural engineering, additive processing, construction, etc., can solve the problems of difficult discharge, affect the appearance, and protruding parts of the structure, so as to reduce the viscosity of materials and improve the fluidity of concrete. Effect
Active Publication Date: 2021-01-26
HOHAI UNIV
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Problems solved by technology
At present, the nozzle discharge method of the concrete printer adopts the extrusion discharge method. With the reduction of concrete in the nozzle of the printer and the loss of water, it will become difficult to discharge the material in the later stage.
Moreover, the fluidity of concrete will change with the change of the surrounding temperature environment. Printing large buildings is a long-term process, and the temperature changes greatly during the printing process, which is difficult to control artificially.
Secondly, during the printing process of concrete, for some faults or hollow structures, it is easy to bond, resulting in protruding parts of the structure and affecting the appearance
Method used
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[0037] Such as figure 1 As shown, the sprinkler device of the present invention includes a raw material delivery pipeline 1, a retarder and a coagulant supplementary pipeline 2, a rotating gear 3, an outer wall of the sprinkler 4, a concrete fluidity detector 5, an inner shaft disc type agitator 6, and an inner shaft of the sprinkler. Shaft 7, retarder replenishment chamber 8, coagulant accelerator replenishment port 9, nozzle inner wall 10.
[0038] Among them, the raw material conveying pipeline 1 is wrapped on the outer wall 4 of the nozzle, and is connected with the outer wall 4 of the nozzle. There is a certain space between the inner wall 10 of the nozzle and the outer wall 4 of the nozzle, which is used to place retarder, coagulant supplementary pipeline 2 and rotating gear 3 On the inner wall 10 of the nozzle, there is a coagulant and a coagulant replenishment port 9, which communicate with the inner space of the nozzle. The concrete fluidity detector 5 is plate-shaped...
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The invention discloses a novel sprinkler device and a use method for 3D printing concrete of pile foundations, combining the field of construction with the field of digital modeling. The invention controls the connecting components through the computer terminal control system, and transports the raw materials in the raw material box to the 3D printer nozzle device. The 3D printer nozzle starts to work, and debugs the parameters of the concrete fluidity inside the nozzle. After the debugging is completed, the 3D printer The nozzle moves to the origin of the frame, and the formal printing starts. The nozzle of the 3D printer moves on the XYZ axis of the frame to print. The invention monitors the concrete fluidity in real time by adding a concrete fluidity detector on the inner wall of the nozzle; meanwhile, an environment detector is installed on the printer. The nozzle adopts a multi-layer closure system, which can close the nozzle in advance when printing hollow or fault structures, so as to solve the problem of sticking and protruding parts.
Description
technical field [0001] The invention relates to a 3D printer, in particular to a nozzle device and a method of use for 3D printing concrete on a pile foundation. Background technique [0002] In recent years, 3D printing technology has become an innovative technology that can change the future, and it will have a huge impact on traditional social production. At the same time, the 3D printing construction technology combining 3D printing technology and architecture will surely become a milestone in the development history of the construction industry. [0003] The software configuration required by the concrete 3D printer is basically the same as that of the ordinary PLA material printer, and the main function of the hardware is to cooperate with the computer to complete the execution of the printing process. The hardware part of the concrete 3D printer is mainly distributed in the bottom control part of the printer, mainly including limit switches, motherboards, motor drive...
Claims
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IPC IPC(8): E02D15/02B33Y30/00B33Y10/00
CPCB33Y10/00B33Y30/00E02D15/02
Inventor 高磊罗易刘汉龙刘爽许蒋鹏罗涵
Owner HOHAI UNIV