Three-dimensional printing method at room temperature and three-dimensional printing device

Abstract

The invention provides a three-dimensional printing method at room temperature and a three-dimensional printing device. The three-dimensional printing method at room temperature comprises the following steps that polycarbonate powders are dissolved into dichloromethane to form polycarbonate gel; the polyacrylonitrile powders are dissolved into dimethyl sulfoxide to form polyacrylonitrile gel; a three-dimensional product blank body is formed on a forming platform from the polycarbonate gel, the polyacrylonitrile gel is formed in a portion, which needs to support or form a hole, of the three-dimensional product blank, the formed three-dimensional product blank body is immersed in the dimethyl sulfoxide solvent, the dimethyl sulfoxide and the dichloromethane are mutually dissolved, the dichloromethane gradually precipitates from the three-dimensional product blank body, the polyacrylonitrile gel is further dissolved with the dimethyl sulfoxide in a liquid storage groove and polyacrylonitrile is diluted; and the forming platform rises, the polyacrylonitrile solution can flow out under the effect of gravity, and the printing of three-dimensional products is finished. The three-dimensional printing method at room temperature does not need to heat consumables and the device, and solves the problems of forming failure and insufficient strength caused by the temperature fusion of the consumables in the processing process.

Description

technical field [0001] The invention relates to the field of rapid prototyping, in particular to a normal temperature three-dimensional printing method and a three-dimensional printing device. Background technique [0002] Fused deposition technology (FDM, Fused Deposition Modeling) is currently one of the most widely used 3D printing technologies, especially in polymer processing, and has been practically applied in industry. Due to the requirements of the forming principle, the fused deposition modeling technology needs to heat the consumables to their melting temperature and then extrude them during the working process. After extrusion, they quickly drop to room temperature to solidify and form. The extremely fast rate leads to obvious cold shrinkage and thermal expansion deformation, and the sequence of molten material deposition and cooling and solidification in the same product can easily lead to uneven heat distribution inside the product, causing thermal stress conce...

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Problems solved by technology

[0004] The main purpose of the present invention is to provide a three-dimensional printing method at room temperature, which does not need to heat consumables and equipment, and can solve the problems of molding failure and insufficient strength caused by temperature fusion of consumables during processing

[0005] Another object of the present invention is to provide a three-dimensional printing device, which does not need to heat consumables and equipment, and can solve the problems of molding failure and insufficient strength caused by temperature fusion of consumables during processing

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