Laser selective melting single-pole bidirectional powder spreading device and laser selective melting equipment

Abstract

The invention provides a single-knife two-way powder spreading device for selective laser melting, which includes a powder hopper, a feeding box, a scraper and a position sensor. The two sides of the box body are provided with the first rotating shaft and the second rotating shaft driven by the motor, so as to drive the movement of the barrier belt. The barrier belt is provided with a discharge port, and the discharge port moves to the first feeding channel or the second feeding channel. , so that the powder falls on the left or right side of the scraper. At the same time, there is a brush block on the inner wall of the installation hole, which can sweep the remaining powder on the barrier belt into the channel, so as to avoid affecting the movement and powder spreading of the barrier belt. For the work of the device, the powder spreading device of the present invention is sensitive in operation and simple in structure. The main structure is arranged outside the feeding box, which is easy to find problems, and is convenient for maintenance and replacement.

Description

technical field [0001] The invention relates to the technical field of laser forming, in particular to a laser selective melting single-knife bidirectional powder spreading device and also relates to a laser selective melting equipment with the powder spreading device. Background technique [0002] Laser selective melting (SLM) is a method of direct forming of metal parts, and it is the latest development of rapid prototyping technology. This technology is based on the most basic idea of ​​rapid prototyping, that is, the "incremental" manufacturing method of layer-by-layer cladding. According to the three-dimensional CAD model, parts with specific geometric shapes are directly formed. During the forming process, the metal powder is completely melted to produce metallurgical bonding. Metal parts with complex shapes and structures that cannot be manufactured by traditional machining methods are one of the main directions for the application of laser rapid prototyping technolog...

AI Technical Summary

Problems solved by technology

[0005] The existing single-pole two-way powder spreading device adopts the setting of internal rollers and ratchet wheels, which makes the structure of the forming chamber of the equipment complicated. The sensitivity of the mechanical structure is poor, and the powder will enter the structure, affecting the work of the reversing structure

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