3D printer for printing based on powdery materials
A 3D printer, powdery technology, applied in the direction of 3D object support structure, solid material additive processing, additive manufacturing, etc., to achieve the effect of increasing compactness, improving flatness, and avoiding centrifugal throwing
Active Publication Date: 2021-10-26
徐州瑞缔新材料科技有限公司
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Problems solved by technology
[0004] In view of the shortcomings of the existing 3D printing powder spreading rollers in the use process proposed in the background technology, the present invention provides a 3D printer for printing based on powder materials, which can make the powder spreading more uniform and prevent the surface of the powder spreading roller from driving the powder. The advantages of material throwing, solve the technical problems raised in the above background technology
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[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0020] see Figure 1-Figure 3 , a fixed shaft 3D printer based on powder material printing, comprising a bracket 1, powder spreading push plates 2 are fixedly installed on both sides of the bracket 1, a fixed shaft 3 is connected between the two brackets 1, and the outer side of the fixed shaft 3 is movable A powder spreading roller 4 is connected, the outer side of the powder spreading roller 4 is fixedly connected with a hard chrome layer 5, and the outer ci...
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The invention relates to the technical field of 3D printing equipment, and discloses a 3D printer for printing based on powdery materials. The 3D printer comprises supports, powder spreading push plates are fixedly installed on the two sides of the supports, a fixing shaft is connected between the two supports, and a powder spreading roller is movably connected to the outer side of the fixing shaft. When an electron beam is used as an energy source, after electrons make contact with powder, accumulated negative charges are generated on the surface of the powder, the outer side of a hard chromium layer makes contact with the powder for powder laying and also carries the negative charges, meanwhile, a movable block moves inside the vertical direction in a movable groove, and therefore a stretchable air bag is driven to suck air through a fixing air pipe and a pipeline, the temperature of the hard chromium layer at the bottom end of the powder spreading roller is reduced, the negative charges on the surface of the powder and the negative charges on the outer side of the hard chromium layer mutually interact, and the powder is separated from the surface of the hard chromium layer, so that continuous rotation of the powder attached to the outer side of the hard chromium layer and sinking of a powder spreading plane are avoided, meanwhile, centrifugal scattering of the material is avoided, and the flatness of powder spreading is improved.
Description
technical field [0001] The invention relates to the technical field of 3D printing equipment, in particular to a 3D printer for printing based on powder materials. Background technique [0002] The 3D printer for powder materials is composed of a working cylinder, a feeding cylinder, a powder spreading roller, a powder spreading push plate, etc. The 3D printing technology of electron beam melting (EBM) uses electron beams as an energy source to print the first layer. , first heat the forming bottom plate in the working cylinder to a certain temperature, and then spread the first layer of powder through the powder spreading roller. At this time, because the high temperature of the forming bottom plate is transmitted to the laid powder, the powder particles It is pre-sintered in between, so that the powder will not collapse after the bundle, and then use the energy source of 3D printing to heat up the powder that has been laid on by repeated scanning, and then melt and print. ...
Claims
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IPC IPC(8): B29C64/153B29C64/218B33Y30/00
CPCB29C64/153B29C64/218B33Y30/00
Inventor 王操浮燕赵喆白海通
Owner 徐州瑞缔新材料科技有限公司