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Rapid shaping automatic powder feeding and spreading device

The technology of powder spreading device and powder feeding device is applied in the field of automatic powder feeding and powder spreading device for rapid prototyping, which can solve the problems of low work efficiency, complex structure, and low powder supply accuracy, and achieves convenient loading and unloading, and solves complex structure and layout. tightening effect

Active Publication Date: 2010-11-17
WUHAN BINHU MECHANICAL & ELECTRICAL
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] However, in the existing powder supply methods, most of them are single-pass powder supply, such as Chinese patent specification CN1283578A, with low work efficiency and complex structure, and there are also two-way powder supply, such as Chinese patent specification CN2767104Y, but the structure of this mode is very complicated, and The powder supply accuracy in the existing powder supply method is not very high

Method used

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  • Rapid shaping automatic powder feeding and spreading device
  • Rapid shaping automatic powder feeding and spreading device
  • Rapid shaping automatic powder feeding and spreading device

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Embodiment Construction

[0029] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0030] The front and rear sides of the workbench 2 are equipped with powder receiving buckets 1, 13, and the work plane 14 is arranged in the central area of ​​the workbench. The work plane 14 can move up and down relative to the workbench 2. The powder pressing roller 3 of the powder device is installed under the connecting plate 4 through the powder pressing roller support 22, one end of the powder pressing roller 3 is connected with the powder pressing motor 20 through the belt pulley assembly 21, and the surface of the powder pressing roller 3 is chrome-plated to To increase its wear resistance, the powder spreading funnel 12 is fixed on the connecting plate 4, and an adjusting backing plate 5 is also provided between the powder spreading funnel 12 and the connecting plate 4, so that the distance between the powder spreading funnel 12 and...

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Abstract

The invention relates to a rapid shaping automatic powder feeding and spreading device, comprising a workbench, a working plane, a quantitative powder feeding device and a powder spreading device, wherein, the working plane is arranged on the workbench, the powder spreading device is arranged above the workbench, and the quantitative powder feeding device is fixed on the upper part of the powder spreading device. The rapid shaping automatic powder feeding and spreading device is characterized in that the powder spreading device comprises a powder pressing roller, a connecting plate, a powder spreading bucket and a return powder feeding device, wherein, the powder pressing roller is arranged under the connecting plate; the powder spreading bucket comprises a front bucket and a rear bucket, and the front bucket and the rear bucket are respectively arranged at two sides of the powder pressing roller after penetrating the connecting plate; and the return powder feeding device is arranged above the powder spreading bucket and on the connecting plate. The automatic power feeding and spreading device can realize round-trip powder spreading via the powder spreading device with only one powder feeding device, thus greatly simplifying the structure; and the device has the characteristics of high powder spreading efficiency, reliable operation, saved space, saved cost, higher operating efficiency and the like.

Description

technical field [0001] The invention relates to a rapid prototyping automatic powder feeding and spreading device, in particular to a rapid prototyping automatic powder feeding and spreading device used in selective laser sintering. Background technique [0002] Selective Laser Sintering (SLS) is a rapid prototyping method that has been commercialized at present. Its working method is: first spread a very thin layer of powder evenly on the workbench, and the laser beam is selectively sintered according to the layered contour of the part under computer control, so that the powder is solidified into a cross-sectional shape. The working plane of the working cylinder is lowered by one layer thickness, and the powder spreading device spreads another layer of powder on the sintered surface for the next layer of sintering. This process is repeated until the entire 3D model is produced. After all the sintering is completed, the excess powder is removed, and then the required parts...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/105B65G47/19B65G47/74
Inventor 余立华蔡道生陶明元陶善球
Owner WUHAN BINHU MECHANICAL & ELECTRICAL
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