Liquid Powder Coaxial Injection Additive Manufacturing
A kind of additive manufacturing and coaxial technology, applied in the new additive manufacturing field, can solve the problems of weak ability, difficult forming, and few different materials and performances.
Active Publication Date: 2018-11-16
全椒金宇粮食机械制造有限公司
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Problems solved by technology
[0005] At present, the ability of the additive manufacturing (3D printing) process to form gradient functional parts is not very strong, and it is rare to obtain different materials and properties in any different spatial parts of the part.
In addition, the current additive manufacturing process still has certain difficulties in forming structural entities that are hollow like bones and have pores of varying sizes and numbers.
Therefore, these problems are obstacles to the further promotion and application of additive manufacturing processes.
Method used
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[0010] The computer control system 11 generates a 3D printing program according to the workpiece CAD model, structure, material, and performance parameters, and sends instructions to the liquid (gel) injection on the adjustable-speed powder feeder 1 and the liquid-powder coaxial injection working head 2 respectively. The driving mechanism 12, the adjustable speed powder feeder 1 supplies material to the nozzle 17 through the powder inlet 15 on the liquid powder coaxial injection working head 2 at a certain speed, and the liquid (gel) injection driving mechanism 12 drives the injection body 14 Inject the liquid (gel) to the injection head 16, and the liquid (gel) feeder 3 can pass through the liquid (gel) supply pipe 5 and the liquid (gel) feed port 13 to the injection body 14 in due course. After feeding, powder and liquid (gel) are sprayed out from injection head 16 and nozzle 17 respectively, powder flow 6 and liquid (gel) flow 7 are formed and mixed. At the same time, the c...
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An additive manufacturing method is disclosed. The manufacturing method can form a 3D entity member made of a two-component composite material. According to the CAD model of an object, under the control of a computer, the powder is quantitatively delivered to a nozzle in real time by a powder delivering device, the liquid (gel) is quantitatively injected to the nozzle bottom through an injection head that is coaxial with the nozzle by an injector in real time, the coaxial liquid (gel) and powder are mixed in the bottom of the nozzle, then the mixture is sprayed and cured on the surface of workpiece (substrate), and the cured mixture is gradually stacked together to form a 3D entity member. The obtained 3D entity member has the advantages that the components and performance of each part and the pore size and distribution can be changed according to the needs.
Description
technical field [0001] The invention relates to a forming manufacturing method, in particular to a new additive manufacturing method. Background technique [0002] Additive manufacturing (3D printing) is based on the 3D model of the object. Under the control of the computer, a layer of the object is first formed on a plane with materials such as plastic or metal, and then the subsequent layers are formed on it, and these layers are formed layer by layer. Combined, through the accumulation of various layers of "graphics", a three-dimensional entity is finally formed. [0003] Additive manufacturing is not a new technology, having appeared in the 1980s. Initially, industrial design often used this technology to build models, and now it is developing in the direction of product manufacturing, forming "direct digital manufacturing". In some high-value applications (such as hip joints or teeth, or some aircraft parts), there have also been additively manufactured parts. It is f...
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IPC IPC(8): B29C64/165B33Y10/00
Inventor 刘继常
Owner 全椒金宇粮食机械制造有限公司