A 3D device and 3D printing method for powder lamination manufacturing
A 3D printing and stacking manufacturing technology, applied in coating devices, additive manufacturing, manufacturing tools, etc., can solve problems affecting parts manufacturing and application, structural unity of molded parts, etc.
Active Publication Date: 2018-03-20
JILIN UNIV
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Problems solved by technology
The feeding direction of the existing scraper is usually fixed in a single direction. When the powder particles are particles with a certain length, or when adding particles with a certain length-to-diameter ratio similar to a fiber structure in the powder, the arrangement direction of the particles will not change. The diversity of directional arrangement directions leads to the structural unity of the final molded parts, which may have certain defects in some performances, thus affecting the overall manufacturing application of parts
Method used
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Embodiment Construction
[0023] Such as figure 1 with figure 2 As shown, the present invention comprises a powder bed 10, a frame 11, a powder spreading bin 1, a scraper 2 and a processing device 3, and the powder spreading bin 1, a scraper 2 and a processing device 3 are arranged on the frame 11, and the powder bed 10 can Move left and right on the frame 11; the scraper 2 is located above the powder bed 10, the powder bed 10 is composed of a piston 4, a lift table 5, a bracket 6, a powder recovery bin 7, an outer frame 8 and a circular forming platform 9, the piston 4 The piston rod is connected with the lifting platform 5, the piston 4 is fixed on the bracket 6, the circular forming platform 9 is set on the lifting platform 5, the circular forming platform 9 is located in the outer frame 8, and the outer frame 8 is provided with a powder recovery bin 7 ; Outer frame 8 is used to limit the working area.
[0024] The processing device 3 is a laser melting device or a three-dimensional printing devi...
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The invention discloses a 3D printing device for laminated manufacturing of powder and a 3D printing method. The device comprises a powder bed, a machine frame, a powder spreading bin, a scraper and a processing device, wherein the powder spreading bin, the scraper and the processing device are arranged on the machine frame, the powder bed can move horizontally on the machine frame, and the scraper is located above the powder bed; material particles for powder spreading are sheet or columnar particles with a certain length and can generate directional induction effect after being spread by the scraper so as to be arranged in the feed direction of the scraper and realize special excellent performances; the powder bed can be rotated by any angle around the axis, by controlling the rotation angle, the feed direction of the scraper relative to formed parts can be changed, the arrangement direction of the particles of different layers can be controlled, the diversity of the arrangement directions of the particles in different areas of one layer can be realized, and then laminated manufacturing of the powder can be realized through laser sintering or binder bonding.
Description
technical field [0001] The invention relates to a molding method, in particular to a 3D printing device and a 3D printing method for powder lamination manufacturing. Background technique [0002] 3D printing technology is a process of rapid prototyping by accumulating materials layer by layer and using additive manufacturing. With the advancement of 3D printing technology in recent years, 3D printing has not only been used to print models, but also can be used more to print and manufacture directly used parts, which marks that 3D printing technology has developed from the initial "rapid prototyping" period to "Rapid Manufacturing" stage. [0003] The 3D printing process of powder mainly includes selective laser sintering (SLS), three-dimensional printing process (3DP), selective thermal curing (SLA) and laser near net shape (LENS). Among them, selective laser sintering is the process of using laser sintering powder to rapidly solidify the powder in a short period of time i...
Claims
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IPC IPC(8): B29C64/20B29C64/205B29C64/214B33Y30/00B33Y40/00B33Y10/00
CPCB33Y10/00B33Y30/00B33Y40/00
Inventor 宋正义任露泉韩志武刘庆萍赵彻周雪莉刘清荣李卓识李冰倩
Owner JILIN UNIV