Manufacturing equipment of laser additive

Abstract

The invention provides manufacturing equipment of a laser additive. The manufacturing equipment comprises a frame, a work cavity, a laser system, an atmosphere protection system and a preheating system, wherein the work cavity is a sealed cavity defined by a heat insulation sandwich panel; a scanning galvanometer of a laser system is arranged at the top of the external part of the work cavity; the preheating system is a three-dimensional flexible heating system, and has a plurality of radiation heating layers with adjustable interlayer spaces arranged at the top inside the work cavity; an air feed pipe and an air return pipe of the atmosphere protection system are divided into a plurality of passages to be respectively connected with two sides of the work cavity through U-shaped tee joints, so that the circulation of inactive gas inside the work cavity is achieved. By adopting the manufacturing equipment of the laser additive, the space can be effectively saved, the heat loss is reduced, the heating efficiency is improved, the energy consumption is reduced, the temperature inside the work cavity is relatively even in distribution, the protective effect on the processing process caused by an internal atmosphere is obvious, different types of materials (metal, macromolecule and the like) can be molded, the processing deformation is reduced, and the excellent quality of molded spare parts is ensured.

Description

technical field [0001] The invention belongs to the field of additive manufacturing, and in particular relates to an additive manufacturing equipment that uses laser 3D printing technology to melt / melt powder layer by layer. Background technique [0002] Additive manufacturing is a widely used rapid prototyping technology. First, the computer three-dimensional solid model of the required parts is designed by CAD three-dimensional modeling software, and then decomposed into a series of two-dimensional cross-sections according to the process requirements according to a certain thickness, that is, the original The three-dimensional information becomes two-dimensional plane information, which is then scanned layer by layer and superimposed layer by layer, finally forming the required prototype or part. [0003] In the additive manufacturing mode that uses laser scanning to melt / melt the powder to form parts layer by layer, it is necessary to use atmosphere protection and preheat...

AI Technical Summary

Problems solved by technology

[0004] CN201300207Y discloses "a rapid prototyping equipment for selective laser melting of metal parts", in which a gas purification system and a heating plate are set, but the setting is not reasonable enough

The irradiation distance of the heating elements of the device is constant, and the number of heating elements can be adjusted by disassembly or installation to achieve the expected heating temperature, which brings inconvenience to the operation

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