CN113369500A - SLM metal 3D prints with scraping powder mechanism - Google Patents
SLM metal 3D prints with scraping powder mechanism Download PDFInfo
- Publication number
- CN113369500A CN113369500A CN202110595898.1A CN202110595898A CN113369500A CN 113369500 A CN113369500 A CN 113369500A CN 202110595898 A CN202110595898 A CN 202110595898A CN 113369500 A CN113369500 A CN 113369500A
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- China
- Prior art keywords
- powder
- scraping
- slm metal
- connecting piece
- fixed plate
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- Legal status (The legal status 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 status listed.)
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- 239000000843 powder Substances 0.000 title claims abstract description 49
- 238000007790 scraping Methods 0.000 title claims abstract description 31
- 239000002184 metal Substances 0.000 title claims abstract description 18
- 238000010146 3D printing Methods 0.000 claims abstract description 15
- 230000005540 biological transmission Effects 0.000 claims description 8
- 230000000903 blocking effect Effects 0.000 claims description 6
- 230000002457 bidirectional effect Effects 0.000 claims description 5
- 238000007639 printing Methods 0.000 description 6
- 238000004804 winding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/60—Planarisation devices; Compression devices
- B22F12/67—Blades
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/20—Direct sintering or melting
- B22F10/28—Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
Abstract
The invention belongs to the technical field of 3D printing, and particularly relates to a powder scraping mechanism for SLM metal 3D printing. According to the invention, the hard scraper head is arranged, so that the probability of damage of the scraper is reduced, the vertical rod arranged on the fixing plate is rotationally connected with the extension rod arranged on the hard scraper head, and the vertical rod and the extension rod are fixed through the fixing rope knot.
Description
Technical Field
The invention relates to the technical field of 3D printing, in particular to a powder scraping mechanism for SLM metal 3D printing.
Background
A common problem with SLM metal 3D printing is part deformation during printing due to high thermal stress, improper part placement or improper support structure, etc. When the deformation of the part exceeds the powder layer, the scraper collides with the part deformation region. In some cases, the blade can pass through the deformation zone. However, in the case that the scraper cannot pass through, serious consequences can be caused, such as damage to the scraper, quality damage to the powder bed, and printing suspension caused by the fact that the scraper cannot pass through the deformation component, and the common powder scraping mechanism for SLM metal 3D printing has the following problems:
1. the common scraper used in the powder scraping mechanism for SLM metal 3D printing is divided into two types, namely a hard scraper and a soft scraper, the use of the hard scraper can make the result caused by collision between a component and the scraper worse, the printing stop can be caused by the fact that the scraper cannot pass through the component, the possibility that fragments (even the component itself if the component is not firmly connected with a printing platform) are dragged into a powder bed when the component is damaged is also caused, the deformation degree of the component can be larger when the soft scraper is used, and on the other hand, the risk that the soft scraper is damaged is higher.
2. Common SLM metal 3D prints with scraping the scraper that uses in the powder mechanism, in order to ensure the result of use, it is comparatively firm to fix usually, and inconvenient dismantlement and change.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a powder scraping mechanism for SLM metal 3D printing, which solves the problems that the material of a scraper mentioned in the technical background influences the scraper and a printing part and the scraper is inconvenient to disassemble.
The second technical proposal.
The invention specifically adopts the following technical scheme for realizing the purpose:
the utility model provides a SLM metal D prints with scraping powder mechanism, includes the powder bed, be equipped with in the cavity of powder bed and scrape the powder structure, it links to each other with drive mechanism through the connecting piece to scrape the powder structure, the last bidirectional motor that is equipped with of drive mechanism.
Further, scrape whitewashed structure including fixing the fixed plate on the connecting piece, the both ends of fixed plate all cup joint with the screw rod that the connecting piece upper end set up, and threaded connection has the nut of fixed plate on the screw rod.
Further, scrape whitewashed structure still include with the fixed plate rotate the hard scraper tool bit of being connected, the lower extreme of fixed plate is equipped with the vertical pole, the upper end of hard scraper tool bit is equipped with the extension rod of rotating with the vertical pole through the bolt and is connected, threaded connection has the nut on the bolt.
Furthermore, two groups of blocking pieces with the same height are arranged on the side walls of the vertical rod and the extension rod, and a fixed knot which is used for fixing the extension rod and preventing the extension rod from rotating freely is connected between the blocking pieces in a winding mode.
Furthermore, the lower extreme of connecting piece all is equipped with the direction slider, the upper end of powder bed is equipped with the spout with direction slider sliding fit.
Further, drive mechanism is including setting up two sets of rotation mount pads that are the symmetric distribution along the long end axis of scraping the powder structure on the powder bed upper surface, and wherein a set of be equipped with the axis of rotation that links to each other with two-way motor on the rotation mount pad, two all be equipped with the driving gear in the axis of rotation, another group the rotation mount pad is connected rather than the connecting axle rotation that is equipped with driven gear, driving gear and driven gear pass through the cingulum meshing that the lower surface links to each other with the connecting piece and are connected.
(III) advantageous effects
Compared with the prior art, the invention provides a powder scraping mechanism for SLM metal 3D printing, which has the following beneficial effects:
1. according to the invention, the hard scraper head is arranged, so that the damage probability of the scraper is reduced, the vertical rod and the extension rod are rotatably connected and fixed through the fixing rope knot, when the hard scraper is subjected to larger resistance, the fixing rope knot is broken to enable the hard scraper head to rotate, and the hard scraper head is prevented from being blocked and being incapable of moving and damaging a printing part.
2. According to the invention, the powder scraping structure is convenient to remove by fixing the fixing plate and the connecting piece through the screw rod and the nut arranged on the connecting piece, and the hard scraper head is also convenient to remove from the fixing plate by fixing the vertical rod and the extension rod through the bolt and the nut.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic perspective view of another embodiment of the present invention;
FIG. 3 is a schematic top view of the present invention;
FIG. 4 is a sectional view taken along the direction A-A of the present invention.
In the figure: 1. a powder bed; 101. a chute; 2. a powder scraping structure; 201. a fixing plate; 2011. a vertical rod; 202. a hard scraper bit; 2021. an extension pole; 203. a bolt; 204. a nut; 205. fixing the knot; 3. a connecting member; 301. a screw; 302. a nut; 303. a guide slider; 4. a transmission mechanism; 401. rotating the mounting seat; 402. a rotating shaft; 403. a driving gear; 404. a connecting shaft; 405. a driven gear; 406. a toothed belt; 5. a bi-directional motor.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
As shown in fig. 1 and 2, a powder scraping mechanism for SLM metal 3D printing according to an embodiment of the present invention includes a powder bed 1, a powder scraping structure 2 is disposed in a cavity of the powder bed 1, the powder scraping structure 2 is connected to a transmission mechanism 4 through a connecting member 3, a bidirectional motor 5 is disposed on the transmission mechanism 4, and the bidirectional motor 5 is disposed to drive the transmission mechanism 4 to enable the powder scraping structure 2 to slide in the cavity of the powder bed 1.
As shown in fig. 3 and 4, in some embodiments, the powder scraping structure 2 includes a fixing plate 201 fixed on the connecting member 3, both ends of the fixing plate 201 are sleeved with a screw 301 disposed at the upper end of the connecting member 3, and the screw 301 is threadedly connected with a nut 302 for fixing the fixing plate 201, so that the fixing plate 201 is fixed on the connecting member 3 by disposing the screw 301 and the nut 302, and the powder scraping structure 2 is also convenient to detach.
As shown in fig. 4, in some embodiments, the powder scraping structure 2 further includes a hard scraper head 202 rotatably connected to the fixing plate 201, a vertical rod 2011 is disposed at a lower end of the fixing plate 201, an extension rod 2021 rotatably connected to the vertical rod 2011 through a bolt 203 is disposed at an upper end of the hard scraper head 202, a nut 204 is threadedly connected to the bolt 203, and the fixing plate 201 and the hard scraper head 202 are connected through the arrangement of the bolt 203 and the nut 204.
As shown in fig. 4, in some embodiments, two sets of blocking pieces with the same height are disposed on the side walls of the vertical bar 2011 and the extension bar 2021, and a fixing knot 205 for fixing the extension bar 2021 so that the extension bar 2021 cannot rotate freely is connected between the blocking pieces in a winding manner.
As shown in fig. 3, in some embodiments, the lower ends of the connecting members 3 are provided with guide sliders 303, the upper ends of the powder beds 1 are provided with chutes 101 slidably engaged with the guide sliders 303, and the connecting members 3 are prevented from shifting when sliding along with the transmission mechanism 4 by the arrangement of the guide sliders 303 and the chutes 101.
As shown in fig. 2 and 3, in some embodiments, the transmission mechanism 4 includes two sets of rotating mounting seats 401 symmetrically disposed on the upper surface of the powder bed 1 along the central axis of the long end of the powder scraping structure 2, wherein one set of the rotating mounting seats 401 is provided with a rotating shaft 402 connected to the bidirectional motor 5, two rotating shafts 402 are provided with driving gears 403, the other set of the rotating mounting seats 401 is rotatably connected to a connecting shaft 404 provided with a driven gear 405, the driving gears 403 and the driven gear 405 are meshed and connected with a toothed belt 406 connected to the connecting member 3 through the lower surface, and the connecting member 3 is displaced along with the rotation of the toothed belt 406 through the arrangement of the driving gears 403, the driven gears 405 and the toothed belt 406.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a SLM metal 3D prints with scraping whitewashed mechanism, includes powder bed (1), its characterized in that: the powder scraping device is characterized in that a powder scraping structure (2) is arranged in a cavity of the powder bed (1), the powder scraping structure (2) is connected with a transmission mechanism (4) through a connecting piece (3), and a bidirectional motor (5) is arranged on the transmission mechanism (4).
2. The powder scraping mechanism for SLM metal 3D printing according to claim 1, characterized in that: scrape whitewashed structure (2) including fixing fixed plate (201) on connecting piece (3), the both ends of fixed plate (201) all cup joint with screw rod (301) that connecting piece (3) upper end set up, and threaded connection has nut (302) of fixed plate (201) on screw rod (301).
3. The powder scraping mechanism for SLM metal 3D printing according to claim 2, characterized in that: scrape whitewashed structure (2) and still include hard scraper tool bit (202) of being connected with fixed plate (201) rotation, the lower extreme of fixed plate (201) is equipped with vertical rod (2011), the upper end of hard scraper tool bit (202) is equipped with extension rod (2021) of rotating with vertical rod (2011) through bolt (203), threaded connection has nut (204) on bolt (203).
4. The powder scraping mechanism for SLM metal 3D printing according to claim 3, characterized in that: two groups of blocking pieces with the same height are arranged on the side walls of the vertical rod (2011) and the extension rod (2021), and a fixed knot (205) which fixes the extension rod (2021) so that the extension rod cannot rotate freely is wound between the blocking pieces.
5. The powder scraping mechanism for SLM metal 3D printing according to claim 1, characterized in that: the lower extreme of connecting piece (3) all is equipped with direction slider (303), the upper end of powder bed (1) is equipped with spout (101) with direction slider (303) sliding fit.
6. The powder scraping mechanism for SLM metal 3D printing according to claim 1, characterized in that: drive mechanism (4) are two sets of rotation mount pads (401) that are symmetric distribution along the long-end axis of scraping powder structure (2) including setting up at powder bed (1) upper surface, and wherein a set of be equipped with axis of rotation (402) that link to each other with two-way motor (5) on rotation mount pad (401), two all be equipped with driving gear (403) on axis of rotation (402), another group rotation mount pad (401) rotate rather than connecting axle (404) that are equipped with driven gear (405) and are connected, driving gear (403) and driven gear (405) are connected through cingulum (406) meshing that lower surface and connecting piece (3) link to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110595898.1A CN113369500A (en) | 2021-05-29 | 2021-05-29 | SLM metal 3D prints with scraping powder mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110595898.1A CN113369500A (en) | 2021-05-29 | 2021-05-29 | SLM metal 3D prints with scraping powder mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113369500A true CN113369500A (en) | 2021-09-10 |
Family
ID=77574918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110595898.1A Pending CN113369500A (en) | 2021-05-29 | 2021-05-29 | SLM metal 3D prints with scraping powder mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113369500A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105397089A (en) * | 2015-12-17 | 2016-03-16 | 北京易加三维科技有限公司 | Vertical force floating powder laying scraper device for metal additive manufacturing |
| CN108856710A (en) * | 2018-06-28 | 2018-11-23 | 安徽卓锐三维科技有限公司 | A kind of power spreading device based on soft scraper |
| CN109702854A (en) * | 2019-02-25 | 2019-05-03 | 中国科学院空间应用工程与技术中心 | A kind of 3D printing equipment paves system |
| CN210234020U (en) * | 2019-05-30 | 2020-04-03 | 深圳市金石三维打印科技有限公司 | Double-belt transmission scraper structure of 3D printer |
| CN211386899U (en) * | 2019-09-19 | 2020-09-01 | 安徽徽博先临三维云打印技术有限公司 | Flexible scraper component of three-dimensional printer |
| CN112247146A (en) * | 2020-09-28 | 2021-01-22 | 湖北华程三维科技有限公司 | Multi-material powder laying mechanism of metal three-dimensional printer |
| CN215544939U (en) * | 2021-05-29 | 2022-01-18 | 深圳意动航空科技有限公司 | SLM metal 3D prints with scraping powder mechanism |
-
2021
- 2021-05-29 CN CN202110595898.1A patent/CN113369500A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105397089A (en) * | 2015-12-17 | 2016-03-16 | 北京易加三维科技有限公司 | Vertical force floating powder laying scraper device for metal additive manufacturing |
| CN108856710A (en) * | 2018-06-28 | 2018-11-23 | 安徽卓锐三维科技有限公司 | A kind of power spreading device based on soft scraper |
| CN109702854A (en) * | 2019-02-25 | 2019-05-03 | 中国科学院空间应用工程与技术中心 | A kind of 3D printing equipment paves system |
| CN210234020U (en) * | 2019-05-30 | 2020-04-03 | 深圳市金石三维打印科技有限公司 | Double-belt transmission scraper structure of 3D printer |
| CN211386899U (en) * | 2019-09-19 | 2020-09-01 | 安徽徽博先临三维云打印技术有限公司 | Flexible scraper component of three-dimensional printer |
| CN112247146A (en) * | 2020-09-28 | 2021-01-22 | 湖北华程三维科技有限公司 | Multi-material powder laying mechanism of metal three-dimensional printer |
| CN215544939U (en) * | 2021-05-29 | 2022-01-18 | 深圳意动航空科技有限公司 | SLM metal 3D prints with scraping powder mechanism |
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