KR101676738B1 - Apparatus for controlling width and power of beam using in three dimensional printer - Google Patents
Apparatus for controlling width and power of beam using in three dimensional printer Download PDFInfo
- Publication number
- KR101676738B1 KR101676738B1 KR1020150130689A KR20150130689A KR101676738B1 KR 101676738 B1 KR101676738 B1 KR 101676738B1 KR 1020150130689 A KR1020150130689 A KR 1020150130689A KR 20150130689 A KR20150130689 A KR 20150130689A KR 101676738 B1 KR101676738 B1 KR 101676738B1
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- KR
- South Korea
- Prior art keywords
- lens
- width
- sintered
- powder
- unit
- Prior art date
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- B29C67/0085—
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Powder Metallurgy (AREA)
Abstract
Description
The present invention relates to a 3D printer beam conditioning apparatus.
3D printers are printers that produce 3D objects. 3D printers are classified into cutting-type 3D printers and stacked-type 3D printers.
A cutting-type 3D printer is a printer that cuts a large chunk into pieces to produce three-dimensional solid objects. A stacked-type 3D printer is a printer that stacks materials to produce three-dimensional solid objects.
Cutting-type 3D printers lose material because they cut large chunks to create three-dimensional solid objects, but stacked 3D printers do not lose material because they stack up layers of material to create three-dimensional solid bodies.
Because of these advantages, most of the recently released 3D printers are stacked 3D printers.
There are three types of stacked 3D printers: 3D printers using FDM (Fused Deposition Modeling) using solid materials, 3D printers using SLA (Stereo Lithography Appartus) using liquid materials, Selective Laser Sintering ) -Type 3D printers.
The 3D printer equipped with the beam adjusting device of the present invention is a SLS type 3D printer.
In the SLS type 3D printer, a beam (electron beam, laser beam) is shot on a powder, and the powder is sintered to produce a product. Conventional beam conditioning apparatus shoots a beam of constant diameter into powder.
If the diameter of the beam is wide, it is possible to make the product quickly, but it is difficult to finely form the product to every corner of the product. Conversely, if the diameter of the beam is narrow, it can be finely molded to every corner of the product, but the speed of making the product is slow.
It is an object of the present invention to provide a new concept of a 3D printer beam adjusting apparatus which increases the speed at which a product is formed while finely shaping every corner of the product.
In order to achieve the above object, a 3D printer beam adjusting apparatus includes:
A beam emitter;
A reflecting mirror part for reflecting the beam emitted from the beam emitting part to a powder part to be sintered;
If the area of the powder to be sintered is large, the width of the beam is widened. If the area of the powder part to be sintered is narrow A beam width adjusting unit for narrowing the beam width; And
Wherein the control unit instructs the beam emitting unit to increase the intensity of the beam when the width of the beam adjusted by the beam width adjusting unit is wide and when the width of the beam adjusted by the beam width adjusting unit is narrow, And a beam intensity controller for controlling the beam intensity to be the same regardless of the beam width.
According to the present invention, when the area of powder to be sintered is wide, the beam width is widened and when the area of the powder part to be sintered is narrow, the width of the beam is narrowed. Therefore, .
The present invention increases the intensity of a beam when the width of the beam is wide and decreases the intensity of the beam when the width of the beam is narrow, thereby controlling the beam intensity to be the same regardless of the beam width. Thus, a product having a uniform sintering strength can be produced.
1 is a schematic view of a 3D printer equipped with a beam adjusting apparatus according to an embodiment of the present invention.
FIG. 2 is a flow chart for explaining the operation of the beam adjusting apparatus shown in FIG. 1, in which the position of the moving lens is moved to adjust the beam width.
3 is a view showing a state in which the moving lens is moved upward and the beam width is narrowed.
4 is a view showing a state in which the movable lens is moved downward to enlarge the beam width.
FIG. 5 is a flow chart for explaining the operation of the beam adjusting apparatus shown in FIG. 1, in which the beam width is adjusted by changing the shape of the deformable lens instead of the movement of the moving lens.
6 is a view showing a state in which the shape of the deformed lens is changed flat and the beam width is kept at an ordinary size.
7 is a view showing a state in which the shape of the deformed lens is concavely changed and the beam width is widened.
8 is a view showing a state in which the shape of the deformed lens is changed convexly and the beam width is narrowed.
Hereinafter, the 3D printer beam adjusting apparatus of the present invention will be described in detail.
The
The
Powder is contained in the powder container (11). The piston (12) lifts the bottom (11a) of the powder cylinder (11). A drive motor (not shown) provides a force to lift the
The molding part 20 is composed of a
And the powder supplied from the
The
The
The
The
The
The driving
The beam
As shown in FIG. 1, the beam
Hereinafter, the beam
2, the beam adjusting apparatus adjusts the angle and position of the reflecting mirror 121 (S12) according to the input drawing information S11, adjusts the position of the moving lens to adjust the beam width (S13 After controlling the beam intensity according to the beam width (S14), the powder is sintered (S15) by irradiating a beam to the powder portion to be sintered. These operations S12 to S15 are repeated to complete the product M (S16).
3 and 4, the beam
The center of the
The
Of course, the
The
The
And is connected to the moving
As the
Of course, if the
As shown in Fig. 3, when the
As shown in Fig. 4, when the moving
The body (not shown) moves in conjunction with the angle and position of the reflecting
On the other hand, the
In this case, as shown in FIG. 5, the beam adjusting apparatus adjusts the angle and position of the reflecting mirror 121 (S22) according to the inputted drawing information S21, and adjusts the angle and position of the reflecting
6 to 8, the beam
Since the
The
Of course, the
The lens
-next-
. Flexible Oil Filled Lens
Fluid-Filled Lens
· Electrowetting Lens
· Electroactive Lens
· Variable-Focus Terahertz Lens
Variable-Focus Lens with 1-kHz Bandwidth
As shown in Fig. 6, when the shape of the
As shown in Fig. 7, when the shape of the
As shown in Fig. 8, when the shape of the
The beam
As a result, the product M having uniform sintering strength is produced because the beam intensity is the same regardless of the beam width.
1: 3D printer 100: beam adjuster
110: beam emitting part 120: reflection mirror part
130: beam width adjusting unit 131: body
132, 135:
132b: Moving
133: lens moving section 136: lens shape changing section
140: beam intensity adjusting unit
Claims (5)
A reflecting mirror part for reflecting the beam emitted from the beam emitting part to a powder part to be sintered;
If the area of the powder to be sintered is large, the width of the beam is widened. If the area of the powder part to be sintered is narrow A beam width adjusting unit for narrowing the beam width; And
Wherein the control unit instructs the beam emitting unit to increase the intensity of the beam when the width of the beam adjusted by the beam width adjusting unit is wide and when the width of the beam adjusted by the beam width adjusting unit is narrow, And a beam intensity controller for controlling the beam intensity to be the same regardless of the beam width.
body;
A lens unit installed inside the body; And
The moving lens constituting the lens unit is moved up and down to widen the beam width passing through the moving lens when the area of the powder part to be sintered is wide and to narrow the beam width passing through the moving lens when the area of the powder part to be sintered is narrow And a lens moving section.
Consisting of a linear motor block and a linear motor rail,
Wherein the linear motor block is connected to a moving lens,
Wherein the linear motor block moves along the linear motor rail to widen or narrow the width of the beam passing through the moving lens.
body;
A lens unit installed inside the body; And
When the area of the powder portion to be sintered is changed by changing the shape of the deformable lens constituting the lens portion, the beam width passing through the deformed lens is widened. When the area of the powder portion to be sintered is narrowed, And a lens shape changing unit for changing the shape of the 3D printer beam.
In the deformed lens,
Fluid-Filled Lens, Electrowetting Lens, Electroactive Lens, Variable-Focus Terahertz Lens, Variable-Focus Lens with 1-kHz Bandwidth,
Wherein the lens shape changing unit supplies electricity, fluid, electricity, and fluid to the deformed lens to widen or narrow the beam width passing through the deformed lens.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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KR1020150130689A KR101676738B1 (en) | 2015-09-16 | 2015-09-16 | Apparatus for controlling width and power of beam using in three dimensional printer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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KR1020150130689A KR101676738B1 (en) | 2015-09-16 | 2015-09-16 | Apparatus for controlling width and power of beam using in three dimensional printer |
Publications (1)
Publication Number | Publication Date |
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KR101676738B1 true KR101676738B1 (en) | 2016-11-16 |
Family
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KR1020150130689A KR101676738B1 (en) | 2015-09-16 | 2015-09-16 | Apparatus for controlling width and power of beam using in three dimensional printer |
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Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20190024262A (en) | 2017-08-31 | 2019-03-08 | 주식회사 디이엔티 | Method and method for adjusting laser beam size in metal 3d printer |
JP2019171854A (en) * | 2018-03-29 | 2019-10-10 | ゼロックス コーポレイションXerox Corporation | System and method for forming nanostructure on substrate to provide predetermined physical characteristics to substrate |
KR20200094828A (en) | 2019-01-22 | 2020-08-10 | 주식회사 디이엔티 | Laser head optical axis distance adjustment device of metal 3D printer |
KR102236755B1 (en) * | 2019-12-12 | 2021-04-06 | 한국광기술원 | Apparatus for 3D Printing that Improved Manufacturing Precision |
KR102250986B1 (en) | 2020-02-25 | 2021-05-14 | 주식회사 디이엔티 | Laser head of nozzle unit for 3D printer |
KR20210089042A (en) | 2020-01-07 | 2021-07-15 | 주식회사 디이엔티 | Apparatus and method for controlling the nozzle unit of a 3D printer |
KR20220073435A (en) | 2020-11-26 | 2022-06-03 | 주식회사 디이엔티 | Laser head for 3d printer |
KR20220074068A (en) | 2020-11-27 | 2022-06-03 | 주식회사 디이엔티 | Chamber and 3d printer with the same |
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KR20130013490A (en) * | 2011-07-28 | 2013-02-06 | 주식회사 씨에이텍 | Rapid prototyping using beam-scanning by visible light and lcd mask |
KR20140140782A (en) * | 2013-05-30 | 2014-12-10 | 서울과학기술대학교 산학협력단 | Three dimensional printer and three dimensional printing method |
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JP2010089364A (en) * | 2008-10-07 | 2010-04-22 | Roland Dg Corp | Three-dimensional shaping apparatus |
KR20130013490A (en) * | 2011-07-28 | 2013-02-06 | 주식회사 씨에이텍 | Rapid prototyping using beam-scanning by visible light and lcd mask |
KR20140140782A (en) * | 2013-05-30 | 2014-12-10 | 서울과학기술대학교 산학협력단 | Three dimensional printer and three dimensional printing method |
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Cited By (9)
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---|---|---|---|---|
KR20190024262A (en) | 2017-08-31 | 2019-03-08 | 주식회사 디이엔티 | Method and method for adjusting laser beam size in metal 3d printer |
JP2019171854A (en) * | 2018-03-29 | 2019-10-10 | ゼロックス コーポレイションXerox Corporation | System and method for forming nanostructure on substrate to provide predetermined physical characteristics to substrate |
JP7096782B2 (en) | 2018-03-29 | 2022-07-06 | ゼロックス コーポレイション | Systems and methods for forming nanostructures on a substrate to give it a given physical property |
KR20200094828A (en) | 2019-01-22 | 2020-08-10 | 주식회사 디이엔티 | Laser head optical axis distance adjustment device of metal 3D printer |
KR102236755B1 (en) * | 2019-12-12 | 2021-04-06 | 한국광기술원 | Apparatus for 3D Printing that Improved Manufacturing Precision |
KR20210089042A (en) | 2020-01-07 | 2021-07-15 | 주식회사 디이엔티 | Apparatus and method for controlling the nozzle unit of a 3D printer |
KR102250986B1 (en) | 2020-02-25 | 2021-05-14 | 주식회사 디이엔티 | Laser head of nozzle unit for 3D printer |
KR20220073435A (en) | 2020-11-26 | 2022-06-03 | 주식회사 디이엔티 | Laser head for 3d printer |
KR20220074068A (en) | 2020-11-27 | 2022-06-03 | 주식회사 디이엔티 | Chamber and 3d printer with the same |
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