Powder laying device suitable for metal selective laser melting forming equipment

Abstract

The invention discloses a powder laying device suitable for metal selective laser melting forming equipment. The powder laying device suitable for the metal selective laser melting forming equipment comprises a device body, the device body is composed of a scraper bottom plate, an adhesive tape and a scraper cover plate, and a plurality of first threaded holes distributed in a linear array mode are formed in the outer side of the scraper bottom plate. A plurality of second threaded holes distributed in a linear array mode are formed in the surface of the scraper cover plate, and first fastening screws are arranged between the interiors of the first threaded holes and the interiors of the second threaded holes. According to the powder laying device suitable for the metal selective laser melting forming equipment, the device body is fixed to an equipment material boot through second fastening screws, under cooperation of a bottom plate concave groove, a cover plate concave groove and a boss, it is guaranteed that through holes have good supporting performance on the adhesive tape, a deformation tolerance space is reserved, it is guaranteed that a production task is smoothly completedunder the condition of local deformation, and stable and uniform powder laying operation is facilitated; and the powder laying device is provided with a rubber soft scraper between a hard scraper anda brush scraper, and the printing success rate is increased on the premise that the forming quality is guaranteed.

Description

technical field [0001] The invention relates to the technical field of powder spreading equipment for additive manufacturing, in particular to a powder spreading device suitable for metal laser selective melting forming equipment. Background technique [0002] Since the development of additive manufacturing technology in the late 1980s, it has been widely used in various fields because of its high design freedom, no need for molds, and short manufacturing cycle. Laser selective melting technology (SLM) is one of the main directions of metal additive manufacturing, and the current marketization level is relatively high. Laser selective melting additive manufacturing equipment usually needs to accumulate materials layer by layer by means of scraper powder spreading, so as to realize the shaping of three-dimensional products. Therefore, the effect of powder spreading will directly affect the molding quality of parts. [0003] The M290 equipment launched by the German EOS comp...

AI Technical Summary

Problems solved by technology

However, due to problems such as stress deformation, oxide slag inclusion, and support failure during the printing process, it is easy to cause defects such as warping or undulation of the scanning plane of the current layer, jamming or even damage to the scraper, resulting in failure of the printing task, which is not conducive to cost control and timely delivery.

The soft brush scraper can solve some printing stuck problems, but because of its high flexibility, and the bristles are easy to wear and fall off, the quality of powder coating is greatly reduced

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