Quantitative detection device and method for the extrusion performance of 3D printed mortar

Abstract

The invention discloses a quantitative detection device and method for the extrusion performance of 3D printed mortar, and belongs to the field of building 3D printing materials. The device comprises a servo motor, an electric cylinder, a pressure sensor, a piston, a base, a material cylinder, a nozzle and a ruler; by controlling the extrusion speed and the extrusion caliber, a feedback pressure generated by the mortar is measured in real time to quantitatively represent the extrusion performance of a material; and meanwhile, the extrusion continuity of the material is quantitatively represented by detecting the continuous extrusion length of the mortar. The detection method and device can accurately reflect the deformability, the liquidity and the feedback pressure of the material during extrusion; a scientific and effective method is provided for quantitative characterization of the extrusion performance of the 3D printing materials; and parameters and bases are provided for design and optimization of the materials.

Description

technical field [0001] The invention belongs to the field of architectural 3D printing materials, and more specifically relates to a quantitative detection device and method for the extrusion performance of 3D printing mortar. Background technique [0002] Architectural 3D printing technology is a new fast and low-pollution construction technology produced by combining 3D printing technology with building material technology. Modernization is of great significance. Currently, the most popular 3D printing construction technologies include contour technology and D-shape. This invention is mainly aimed at the contour technology printing method. Its main principle is to use a computer to perform 3D modeling and segmentation of target components or buildings to produce 3D information, and then The prepared cement-based building material mixture is passed through the extrusion device, and according to the set program, through mechanical control, it is extruded through the nozzle ...

AI Technical Summary

Problems solved by technology

[0008] A device and method for testing the workability of 3D printing mortar is reported in the patent document "3D Printing Construction Mortar Workability Test Device and Application" (Application No.: CN 104297103 A), which can detect 3D printing mortar The extrusion speed and operating time under a certain pressure, but cannot detect the continuity of the extrusion process of the printed material, nor can it re

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