Source: https://patents.google.com/patent/KR101958733B1/en
Timestamp: 2020-01-20 09:02:23
Document Index: 550966362

Matched Legal Cases: ['art 300', 'art 300', 'art 300', 'art 300', 'art 300', 'art 300', 'art 310', 'art 310', 'art 300', 'art 300', 'art 300', 'art\n310']

KR101958733B1 - Three-dimensional object - Google Patents
Three-dimensional object Download PDF
KR101958733B1
KR101958733B1 KR1020170077609A KR20170077609A KR101958733B1 KR 101958733 B1 KR101958733 B1 KR 101958733B1 KR 1020170077609 A KR1020170077609 A KR 1020170077609A KR 20170077609 A KR20170077609 A KR 20170077609A KR 101958733 B1 KR101958733 B1 KR 101958733B1
KR1020170077609A
KR20180137836A (en
2017-06-19 Application filed by (주)센트롤 filed Critical (주)센트롤
2017-06-19 Priority to KR1020170077609A priority Critical patent/KR101958733B1/en
2018-12-28 Publication of KR20180137836A publication Critical patent/KR20180137836A/en
2019-03-18 Publication of KR101958733B1 publication Critical patent/KR101958733B1/en
238000000110 selective laser sintering Methods 0 description 9
According to the present invention, A work table installed inside the chamber and installed to be slidable up and down, and to be welded to a product to be manufactured while sequentially stacking the supplied powders with a plurality of powder layers; And a powder supply unit supplied to an upper portion of the work table, wherein the powder supply unit further includes a cover having a plurality of holes so that the powder is filled.
[0001] THREE-DIMENSIONAL OBJECT [0002]
The present invention relates to a three-dimensional printer.
Generally, a device that creates a real model, such as a three-dimensional machine part, is printed on a computer file designed by a CAD program. The device is called a 3D printer.
In the three-dimensional printer method, SLA (Stereo Lithographic Apparatus) which uses the principle that a scanned portion is cured by injecting a laser beam to a photo-curable resin, and a functional polymer or metal powder instead of a photo- SLS (Selective Laser Sintering), which uses the principle of solidification by injection, and Laminated Object Manufacturing (LOM), which cuts glue-coated paper using a laser beam in a desired cross-section, , And BPM (Ballistic Particle Manufacturing) using Ink-Jet printer technology. Laser-based methods were developed at the University of Texas at UOT in Austin, USA in the early 1980's / early 1990's and are known as 3D printing or selective laser sintering.
SLS technology has enabled the direct production of three-dimensional articles with high resolution and dimensional accuracy from a variety of powder materials including conventional polymer powders. Selective Laser Sintering (SLS) is described in U.S. Patent No. 4,863,568, which is incorporated herein by reference in its entirety. Selective laser sintering was commercialized by DTM Corporation. Selective laser sintering involves spreading a thin layer of powder on a flat surface.
The powder is spread on a worktable using a tool developed for use in a selective laser sintering process known in the art as a counter-rolling mechanism or a counter-roller. Continuous powder layers are sieved on a layer that has already been formed using a counter-roller and then sintered or melted with a laser. After the powder layer is deposited on the surface, the laser energy is applied to the powder in a predetermined two-dimensional pattern using a laser. The laser sinter or melt the powder together in the region where the laser beam energy impinges. The powder may be a plastic, a metal, a polymer, a ceramic or a composite.
However, in the case of a three-dimensional printer using such a powder as a material, there is a problem that when the powder of the powder supply part is exhausted in the three-dimensional solid molding process, the powder falls or is scattered to the outside of the powder supply part Respectively.
SUMMARY OF THE INVENTION It is an object of the present invention to provide a three-dimensional printer in which a cover is formed on a powder supply unit and a hole is formed so that the powder scattered by the cover falls down.
According to an aspect of the present invention, there is provided a plasma display apparatus comprising: a chamber having an internal space; A work table installed inside the chamber and installed to be slidable up and down, and to be welded to a product to be manufactured while sequentially stacking the supplied powders with a plurality of powder layers; And a powder supply unit supplied to an upper portion of the work table, wherein the powder supply unit further includes a cover having a plurality of holes so that the powder is filled.
The lid may include an insertion hole into which the powder is inserted and a plurality of arcuate holes formed around the insertion hole, and the arcuate hole may be formed at a lower height than the insertion hole.
The three-dimensional printer according to the present invention is characterized in that a powder supply portion is provided with a hole in a powder supply portion such that powder is supplied to the powder supply portion such as scattered powder or scattered powder when the powder is exhausted, Thereby not only reducing the waste of the powder but also reducing the cost of the powder.
1 illustrates a three-dimensional printer according to an exemplary embodiment of the present invention,
2 is a detailed view of a cover of a powder supply unit in the three-dimensional printer shown in Figs. 2 to 1. Fig.
FIG. 1 is a view showing a three-dimensional printer according to an embodiment of the present invention, and is a detailed view of a cover of a powder supply unit in the three-dimensional printer shown in FIG. 2 to FIG.
Referring to FIGS. 1 and 2, a three-dimensional printer according to an embodiment of the present invention may include a chamber 100, a work table 200, and a powder supply unit 300.
The chamber 100 forms a work space, and a work table 200 is installed inside the chamber 100.
The work table 200 is installed in the chamber 100 so as to be slidable upward and downward and the work table 200 is connected to a separate raising and lowering mechanism 220. By the operation of the raising and lowering mechanism 220 And moves upward and downward while sliding up and down in the chamber 100. Since the lifting mechanism 220 is controlled by a controller (not shown), the lifting and lowering of the work table 200 is controlled by a controller (not shown).
The work table 200 may further include a work table 210 on which powder supplied from the powder supply unit 300 is sequentially stacked and a work table 210 is preferably provided on the work table 200, It is preferable that the work table 210 has a function of preventing static electricity from being generated in the chamber 100 and the upper part of the work table 200 and the work table 210 has a rubber material for suppressing the generation of static electricity.
That is, the work table 210 can be made of metal and non-metal. The metal may be gold, silver, copper, tin, lead, iron, or mercury, and the base metal may be plastic and rubber.
In addition, the work table 210 is formed of a frame made of metal, and nonmetal plastics and rubber can be balancedly or non-balancedly inserted into the frame.
The powder supplied to the upper part of the work table 200 is stored in the powder supplying part 300 and the powder supplying part 300 is provided on both sides of the work table 200 in correspondence with the work table 200 Do.
The powder stored in the powder supply part 300 is supplied to the upper part of the work table 200 by a cotter machine (not shown). After the metal powder stored in the powder supply part 300 is sucked into the upper part of the work table 200, a coater machine (not shown) feeds the sucked metal powder to the upper part of the work table 200, The powder is applied to the work table 200 at a predetermined thickness to form a powder layer on the work table 200.
A powder supply part 300 is provided adjacent to the work table 200. The powder supply unit 300 may further include a powder storage unit 310 that forms a powder layer on the work table 200 and stores the remaining powder.
The powder supply part 300 is preferably arranged in line with the work table 200 together with the powder storage part 310. The powder layer is flatly formed on the work table 200 while the coater group moves from the powder supply unit 300 to the work table 200 and the worker 200 moves from the work table 200 to the powder supply unit 300 A powder layer is formed on the table 200 and the remaining powder is stored while being moved to the powder storage part 310.
The cotter machine (not shown) preferably includes a separate moving member (not shown) and a vacuum member (not shown). The moving member (not shown) serves to move a cotter machine (not shown) from the top of the work table 200 to the left and right, and a vacuum member (not shown) To the upper portion of the rear work table 200.
Referring to FIG. 2, the powder supply unit 300 includes a cover 310 having a plurality of holes formed therein to fill the powder. The lid 310 may further include an insertion hole 312 and a flying hole 314. Here, the insertion hole 312 is a hole into which the powder is inserted when the powder is exhausted. The baffle hole 314 may be formed in one or a plurality of holes around the insertion hole 312. Such a scattering hole 314 may be formed at a lower height than the insertion hole 312. However, as shown in FIG. 2, the scattering holes 314 may not be formed uniformly. And the holes can be smaller and larger, and the number distributed can be made infinite.
Therefore, in the process of filling the powder when the powder is consumed in the powder supplying part 300, the powder is supplied to the powder supplying part 300 such that the powder is supplied to the powder supplying part 300, such as scattered powder or scattered falling powder, The lid 310 formed thereon is provided, which not only reduces the waste of the powder but also reduces the cost of the powder.
100: chamber
200: Work table
300: Powder supply part
310: cover
312: insertion hole
314: Bass hole
A chamber provided with an internal space;
A work table installed inside the chamber and installed to be slidable up and down, and to be welded to a product to be manufactured while sequentially stacking the supplied powders with a plurality of powder layers; And
And a powder supply unit supplied to an upper portion of the work table,
Wherein the powder supply unit comprises:
Further comprising a cover having a plurality of holes for filling the powder,
An insertion hole into which the powder is inserted,
And a plurality of scattering holes formed around the insertion holes,
The baffle hole
And a height lower than the insertion hole.
KR1020170077609A 2017-06-19 2017-06-19 Three-dimensional object KR101958733B1 (en)
KR1020170077609A KR101958733B1 (en) 2017-06-19 2017-06-19 Three-dimensional object
KR20180137836A KR20180137836A (en) 2018-12-28
KR101958733B1 true KR101958733B1 (en) 2019-03-18
ID=65008277
KR (1) KR101958733B1 (en)
KR20170002860A (en) * 2015-06-30 2017-01-09 (주)센트롤 Temperature controlling method and apparatus of chamber for producing a three-dimensional object
2017-06-19 KR KR1020170077609A patent/KR101958733B1/en active IP Right Grant
KR20180137836A (en) 2018-12-28
DE102010020418A1 (en) 2011-11-17 Apparatus and method for the generative production of a three-dimensional object with construction panel boundary
US9592554B2 (en) 2017-03-14 Method for manufacturing three-dimensional shaped object
CN100395098C (en) 2008-06-18 Three-dimensional printing formation unit and method
DE102011007957A1 (en) 2012-07-05 Device and method for constructing a layer body with at least one body limiting the construction field and adjustable in terms of its position
US10046519B2 (en) 2018-08-14 Method for producing a three-dimensional object and stereolithography machine employing said method
JPH05198609A (en) 1993-08-06 Electronic package and smart structure formed by thermal spray deposition, and its manufacturing method
EP2900455B1 (en) 2019-04-03 Apparatus and method for stabilizing a powder bed by means of vacuum for additive manufacturingand corresponding process
WO2009052773A2 (en) 2009-04-30 Method and device for conveying particulate material during the layer-wise production of patterns