Laser additive manufacturing system and method for polymer wire

Abstract

The invention belongs to the field of wire additive manufacturing, and discloses a laser additive manufacturing system and method for a polymer wire. The system comprises a lifting table, a wire conveying unit, an extruding unit, a robot and a laser device, wherein the lifting table is a working tabletop for forming a wire; the laser device is used for melting the wire extruded from the extrudingunit; the laser device is arranged outside the extruding unit to separate the melting of the wire from the extruding unit, namely separate wire conveying and melting, so that blockage of a sprayer ofthe extruding unit is avoided; a laser head and the extruding unit are fixed on a working table at the tail end of the robot, so that laser can directly shoot a wire extruding position at any time toensure that the wire is melted under the action of the laser as soon as the wire is extruded; the robot carries the extruding unit and a laser unit to move according to a preset track to realize melting and forming of the wire on a single slice layer; the lifting table goes down to realize forming of all the slice layers, so as to obtain a part to be formed. According to the laser additive manufacturing system disclosed by the invention, the problems of easiness in blockage, difficulty in cleaning, short service life and the like of the sprayer are solved.

Description

technical field [0001] The invention belongs to the field of wire additive manufacturing, and more particularly relates to a laser additive manufacturing system and method for polymer wire. Background technique [0002] Additive manufacturing is a process of accumulating discrete materials layer by layer to obtain physical parts. Compared with traditional manufacturing technologies, additive manufacturing technology can realize moldless and rapid prototyping of complex structures, and is suitable for the manufacture of personalized and high value-added products. , with the characteristics of high material utilization rate and high degree of automation. Due to its low density, low forming temperature and excellent product performance, polymer materials have become the materials with the largest consumption, the widest application range and the most forming methods in additive manufacturing raw materials, mainly including polymer filaments suitable for fused deposition modelin...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above defects or improvement needs of the prior art, the present invention provides a polymer filament laser additive manufacturing system and its method, which melts the polymer filament by laser and separates the filament extrusion unit from the melting heat source , which solves the problems of easy blockage, difficult cleaning and short service life of the nozzle; in addition, the extruding unit is driven by the robot, which improves the flexibility, flexibility and stability of the processing process; the wire is extruded from the nozzle through the wire pulling mechanism The back track is controllable, realizing the high stability of the polymer wire laser additive manufacturing process and the high precision of the product

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