A powder supply and spreading method and device for 3D printing of multi-material parts
A 3D printing and powder supply technology, which is applied in the direction of additive processing, process efficiency improvement, and energy efficiency improvement. It can solve the problems of reducing forming efficiency, 3D printing of difficult parts, and increasing adsorption and recovery actions. It achieves strong practicability, Ingeniously conceived and operable effects
Active Publication Date: 2017-05-10
SHAOGUAN COLLEGE
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Problems solved by technology
This method and device can realize the concept of 3D printing molding with free selection of materials according to points, but after each curing in one layer, all materials on the forming platform need to be removed by vacuum adsorption, and the powder supply and powder recovery of each layer will be changed layer by layer. If there are many layers of parts, it will be difficult to realize the 3D printing of parts, and compared with the traditional process, the adsorption recovery action is increased and the forming efficiency is also reduced.
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Embodiment Construction
[0043] see Figure 1-Figure 12 . figure 1 It is a side view of the powder supply and spreading device for 3D printing of multi-material parts. figure 2 It is the front view of the powder supply and spreading device for 3D printing of multi-material parts. image 3 It is a schematic diagram of the structure of the powder supply funnel and its "closed" state. Figure 4 It is a schematic diagram of the structure of the powder supply funnel and its "open" state. Figure 5 is the front view of the homogenizer. Image 6 It is a three-dimensional schematic diagram of a homogenizer. Figure 7 It is the front view of the high flexible scraper or the low flexible scraper. Figure 8 It is a side view of the high flexible scraper or the low flexible scraper. Figure 9 It is a schematic diagram of the material area of the current layer in this embodiment. Figure 10 It is a schematic diagram of the printing process of the first material area of the current layer in this embodim...
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The invention discloses a powder supply and spreading method and device for 3D printing of multi-material parts. Multiple powder supply funnels are used to store different powder materials and supply them quantitatively. The powder in each powder supply funnel falls to the powder homogenizer by gravity, and the powder homogenizer evenly disperses the powder from each powder supply funnel and falls to the powder spreading box. The two sides of the powder spreading box body of the powder spreading box are respectively equipped with a high-position flexible scraper and a low-position flexible scraper. When the powder spreading box moves above the forming platform, the high-position flexible scraper is responsible for spreading the powder material above the platform, and the low-position flexible scraper is responsible for After each powder in the forming layer is melted or sintered, the excess powder is recovered to the powder collection box. The present invention adopts methods such as gravity quantitative powder supply, high-position flexible scraper powder spreading and low-position flexible scraper recovery of residual powder, etc., and provides a simple and easy powder supply and spreading method for realizing free point-by-point material selection for 3D printing multi-material parts and devices.
Description
technical field [0001] The invention relates to the field of 3D printing equipment, in particular to a powder supply and spreading method and device for 3D printing of multi-material parts. Background technique [0002] 3D printing technology, also known as additive manufacturing technology, can quickly manufacture various structurally complex parts based on three-dimensional models. 3D printing technology enables the structural design of parts to be free from the restrictions of traditional manufacturing technology, which improves the manufacturing capacity of the process; at the same time, 3D printing technology also has the advantages of short product development cycle and low research and development costs. 3D printing technology has developed rapidly in recent years, and it has been widely used in medical, automotive, aerospace, art and other industries, and can almost directly form parts of any complex geometry. [0003] Many items in life and industry are made of two...
Claims
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IPC IPC(8): B22F3/105B33Y30/00
CPCB33Y30/00B22F10/00B22F12/52B22F10/73B22F12/57B22F10/28B22F12/67B22F12/55Y02P10/25
Inventor 吴伟辉刘锋
Owner SHAOGUAN COLLEGE