High polymer material ultraviolet laser 3D (three-dimensional) printing method and device for precise temperature control

Abstract

The invention discloses a high polymer material ultraviolet laser 3D (three-dimensional) printing method and device for precise temperature control. The device comprises a thermostat, a laser head, a non-contact type temperature monitoring device, a scanning galvanometer, a machining platform, a powder paving device, a machining material and a computer control system. The laser head adopts a dual-tube core structure, an inner tube and an outer tube are coaxially fixed, one or more than one gradual-change neutral filter piece is arranged between the two tubes, and the laser transmittance of the filter piece(s) is radially reduced from the inner tube to the outer tube. The method comprises the following steps: presetting the machining temperature by the control system, in the process of machining, monitoring the temperature rise condition of an object to be machined in real time under the irradiation of laser by the non-contact type temperature monitoring device, feeding back to the control system, recording the increased value of the temperature within a certain time, and obtaining the absorption capability of the material to be machined to the laser and the temperature rise degree by the system, so that according to the preset machining temperature value, the laser output power can be calculated, the laser power can be timely adjusted, and the machining temperature can be precisely controlled.

Description

technical field [0001] The invention belongs to the technical field of 3D printing and molding, and in particular relates to a polymer material ultraviolet laser 3D printing molding method and device for precise temperature control. Background technique [0002] 3D printing is a popular concept and a kind of rapid prototyping technology, which was born in the late 1980s. This technology integrates mechanical engineering, material engineering, numerical control technology, laser technology and other technologies, and uses the material accumulation method to manufacture the prototype of parts. The principle is to first model with computer-aided design (CAD) or computer animation modeling software to form a digital model, then decompose the three-dimensional model into two-dimensional cross-sections layer by layer, and accumulate and solidify the printing materials layer by layer through the software and numerical control system. Create physical products. The mainstream metho...

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problems in the existing 3D printing, the present invention proposes a polymer material ultraviolet laser 3D printing molding method and device for precise temperature control to solve the above technical problems

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