Downward powder feeding system

A powder feeding and powder storage technology, which is applied in the field of downlink powder feeding system, can solve the problems of low work efficiency and achieve the effects of convenient upgrading, high axial movement precision and good rigidity

CN106180714BActive Publication Date: 2018-09-18SICHUAN AEROSPACE LONG MARCH EQUIP MFG CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2018-09-18

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Abstract

The invention discloses a downward powder feeding system, comprising a base, a forming bin in the middle of the base, a powder feeding bin on both sides of the forming bin, and a powder storage bin on the side away from the layer forming bin respectively. bottle; forming bin, powder feeding bin and powder storage bottle are arranged side by side and closely arranged, and a powder spreading device for circulating powder spreading between two powder storage bottles is arranged on the base; the powder feeding bin and forming bin are open at the upper end and The bottom of the powder feeding bin is provided with a movable bottom plate, and the lower part of the powder feeding bin is provided with a double guide column linear motion unit that drives the movable bottom plate to move up and down. It is equipped with a double guide rail linear motion unit that drives its up and down movement. In the present invention, the one-way powder spreading in the working cycle is changed to two-way two-way powder spreading, which effectively improves the forming efficiency of the 3D printing equipment. Moreover, the added structural components are still applicable to the traditional equipment, and it is very convenient to upgrade the old equipment.
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Description

technical field

[0001] The invention relates to a powder feeding mechanism, in particular to a descending powder feeding system. Background technique

[0002] Selective laser melting technology (SLM, Selective laser melting) is a kind of additive manufacturing technology, which is a technology in which metal powder is completely melted under the heat of a laser beam, cooled and solidified to form a shape. With the continuous innovation of 3D printing technology and the diversified development of printing materials, this new technology is widely used in industrial, military, medical and consumer fields.

[0003] Several major systems of SLM laser 3D printing equipment include: laser scanning system, atmosphere control system, powder feeding system, etc. As one of the main system components, the powder feeding system directly determines the operating efficiency and forming accuracy of the equipment.

[0004] According to the different powder feeding modes, the mainstream pow...

Examples

Embodiment 1

[0031] Embodiment 1: see Figure 1 to Figure 5 , a downward powder feeding system, including a base 1, a forming chamber 2 is provided in the middle of the base 1, a powder feeding chamber 3 is respectively arranged on both sides of the forming chamber 2, and the side of the powder feeding chamber 3 away from the layer forming chamber 2 is respectively There is a powder storage bottle 4; the forming chamber 2, the powder feeding chamber 3, and the powder storage bottle 4 are arranged side by side and closely arranged, and the base 1 is provided with a powder spreading device that circulates powder between the two powder storage bottles 4;

[0032] Both the upper ends of the powder feeding bin 3 and the forming bin 2 are open and flush, the inner bottom of the powder feeding bin 3 is provided with a movable bottom plate, and the bottom of the powder feeding bin 3 is provided with a double guide column linear motion unit 5 that drives the movable bottom plate to move up and down....