KR101958733B1 - Three-dimensional object - Google Patents

Three-dimensional object Download PDF

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Publication number
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
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KR
South Korea
Prior art keywords
powder
work table
supply unit
plurality
powder supply
Prior art date
Application number
KR1020170077609A
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Korean (ko)
Other versions
KR20180137836A (en
Inventor
김보경
배성우
Original Assignee
(주)센트롤
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by (주)센트롤 filed Critical (주)센트롤
Priority to KR1020170077609A priority Critical patent/KR101958733B1/en
Publication of KR20180137836A publication Critical patent/KR20180137836A/en
Application granted granted Critical
Publication of KR101958733B1 publication Critical patent/KR101958733B1/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/20Apparatus for additive manufacturing; Details thereof or accessories therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER
    • B22F3/00Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/10Sintering only
    • B22F3/105Sintering only by using electric current other than for infra-red radiant energy, laser radiation or plasma ; by ultrasonic bonding
    • B22F3/1055Selective sintering, i.e. stereolithography
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/10Processes of additive manufacturing
    • B29C64/141Processes of additive manufacturing using only solid materials
    • B29C64/153Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B33ADDITIVE MANUFACTURING TECHNOLOGY
    • B33YADDITIVE 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
    • B33Y30/00Apparatus for additive manufacturing; Details thereof or accessories therefor

Abstract

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.

Description

[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.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings in order that the present invention can be easily carried out by those skilled in the art. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In order to clearly illustrate the present invention, parts not related to the description are omitted, and the same or similar components are denoted by the same reference numerals throughout the specification.

In addition, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary meanings, and the inventor should properly define the concept of the term to describe its invention in the best way. It should be construed as meaning and concept consistent with the technical idea of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

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.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

100: chamber
200: Work table
300: Powder supply part
310: cover
312: insertion hole
314: Bass hole

Claims (2)

  1. 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,
    Wherein the cover comprises:
    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.
  2. delete
KR1020170077609A 2017-06-19 2017-06-19 Three-dimensional object KR101958733B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020170077609A KR101958733B1 (en) 2017-06-19 2017-06-19 Three-dimensional object

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020170077609A KR101958733B1 (en) 2017-06-19 2017-06-19 Three-dimensional object

Publications (2)

Publication Number Publication Date
KR20180137836A KR20180137836A (en) 2018-12-28
KR101958733B1 true KR101958733B1 (en) 2019-03-18

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Application Number Title Priority Date Filing Date
KR1020170077609A KR101958733B1 (en) 2017-06-19 2017-06-19 Three-dimensional object

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Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7971991B2 (en) * 2006-05-26 2011-07-05 Z Corporation Apparatus and methods for handling materials in a 3-D printer
KR20170002860A (en) * 2015-06-30 2017-01-09 (주)센트롤 Temperature controlling method and apparatus of chamber for producing a three-dimensional object

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