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Metal powder conveying device and selective laser melting equipment

A conveying device, metal powder technology, applied in metal processing equipment, transportation and packaging, chemical instruments and methods, etc., can solve problems such as affecting part molding, final part printing failure, easy agglomeration, etc., and achieve the effect of complete crushing

Inactive Publication Date: 2022-03-04
HUANGSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The quality of the metal powder in the laser selective melting technology plays a crucial role in the molding of the final part. In the state of preservation, the metal powder is very easy to agglomerate if it is damp. If the agglomerated metal powder is not treated, it can be directly If it is laid in the melting area, it will affect the molding of the part, and in severe cases, it will lead to the failure of the final part printing

Method used

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  • Metal powder conveying device and selective laser melting equipment
  • Metal powder conveying device and selective laser melting equipment
  • Metal powder conveying device and selective laser melting equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The inside of the installation cavity 5 is provided with a fixed frame 8, and a spring 9 is fixedly connected between the fixed frame 8 and the inner wall of the installation cavity 5. The inside of the fixed frame 8 is provided with an installation groove 10, and the inside of the installation groove 10 is movable with a filter screen plate 11. The screen plate 11 and the inner wall of the installation groove 10 are fixedly connected with the first elastic block 12, and the filter screen plate 11 and the installation groove 10 are connected by the first elastic block 12, so that the subsequent filter screen plate 11 can be bumped and vibrated by the impact plate 14, and at the same time The vibration of the fixed frame 8 can be transmitted to the screen plate 11 through the first elastic block 12;

[0038] The inside of the fixed frame 8 is provided with an impact assembly for impacting the filter screen plate 11. The impact assembly includes an impact chamber 13 provid...

Embodiment 2

[0040] On the basis of Example 1, considering that the metal powder is generally caused by moisture, the final agglomeration is caused. In this embodiment, hot air is blown to the agglomerated metal powder to take away the moisture inside the agglomerated metal powder. To make the agglomerated metal powder more likely to break when it is shaken, a heating tank 16 is provided inside the fixed frame 8, and a heating wire 17 is fixed inside the heating tank 16, and the first air passage is passed between the heating tank 16 and the impact chamber 13 18 is connected, and the gas inside the impact chamber 13 is blown to the agglomerated metal powder through the heating tank 16, and the fixed frame 8 is provided with a gas-blocking assembly that blocks the first air passage 18 movably.

Embodiment 3

[0042] On the basis of Embodiment 1, in this embodiment, the impact component is firstly stored energy and then suddenly released energy, so that the degree of impact is more intense. The interior of the fixed frame 8 is provided with an inflatable component for inflating the impact chamber 13. The inflatable component includes In the inflatable chamber 19 inside the fixed frame 8, an inflatable board 20 is movable inside the inflatable chamber 19, and an airtight space is formed inside the inflatable board 20 and the inflatable chamber 19. The inflatable board 20 and the inner wall of the inflatable chamber 19 are fixedly connected with a third elastic block 21, The side of the inflatable board 20 close to the slot 7 is fixedly connected with a connecting rod 22 and a ball 23 movable into the inside of the slot 7. The ball 23 is a hemispherical meshing with the slot 7. Drive the inflatable plate 20 to move, the inflatable chamber 19 and the impact chamber 13 communicate throug...

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Abstract

The invention provides a metal powder conveying device and selective laser melting equipment, the metal powder conveying device comprises a funnel, a conveying rod and a feeding screw rod, a mounting cavity is formed in the conveying rod, a fixing frame is movably arranged in the mounting cavity, a filter screen plate is arranged in the fixing frame, the filter screen plate and the inner wall of a mounting groove are fixedly connected with first elastic blocks, and the first elastic blocks are fixedly connected with the conveying rod. And an impacting assembly used for impacting the filter screen plate is arranged in the fixing frame, a heating groove is formed in the fixing frame, a heating wire is fixedly arranged in the heating groove, and the heating groove communicates with the impacting cavity through a first air channel. In the using process, in the downward moving process of the fixing frame, a clamping ball and a clamping groove are matched to enable a filter screen plate to vibrate, meanwhile, the filter screen plate is impacted through an impact assembly, hot air is blown to caked metal powder, and then an extrusion rod is matched to extrude powder falling from filter screen holes; and the caked metal powder is crushed very thoroughly.

Description

technical field [0001] The invention relates to the technical field of powder transportation, in particular to a metal powder transportation device and laser selective melting equipment. Background technique [0002] With the advancement of science and technology, the use of 3D printing technology in various fields is very common today. As a kind of 3D printing, laser selective melting technology uses laser as the energy source and plans according to the 3D CAD slice model. A good path is scanned layer by layer on the metal powder bed, and the scanned metal powder is melted and solidified to achieve the effect of metallurgical bonding, and finally the metal parts designed by the model are obtained. [0003] The publication number is "CN205393540U", which provides a metal powder conveying device for laser selective melting equipment and laser selective melting equipment, including a funnel for holding metal powder, and a powder leakage mechanism placed in the outlet of the fu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F12/00B22F10/28B33Y30/00B33Y40/10B22F1/142B22F9/04B07B1/28B07B1/42
CPCB22F12/00B22F10/28B33Y30/00B33Y40/10B22F9/04B07B1/28B07B1/42Y02P10/25
Inventor 方涛吴承伟汪彦
Owner HUANGSHAN UNIV
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