CN104722759A - Selective laser melting\sintering powder separating and recycling device and method - Google Patents
Selective laser melting\sintering powder separating and recycling device and method Download PDFInfo
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- CN104722759A CN104722759A CN201510167065.XA CN201510167065A CN104722759A CN 104722759 A CN104722759 A CN 104722759A CN 201510167065 A CN201510167065 A CN 201510167065A CN 104722759 A CN104722759 A CN 104722759A
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- 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
Abstract
The invention belongs to the technical field of fast forming 3D printing, and relates to a selective laser melting\sintering powder separating and recycling device and method. An upper workbench of a net-shaped structure is installed in an inner cavity of a stroke cylinder, the upper workbench and a lower workbench of a funnel-shaped structure are connected to form a workbench, an electric control valve is arranged at the bottom end of the lower workbench, four supporting rods are symmetrically arranged at the bottom ends of the two sides of the lower workbench, and leakage stopping devices are arranged at the joints of the supporting rods and the bottom of the stroke cylinder. A work cavity is formed by a cavity between the workbench and the stroke cylinder, the bottom of the work cavity is communicated with powder recycling bottles, and valves are arranged at the joints of the powder recycling bottles and the work cavity. A lead screw is connected to the bottom of the stroke cylinder and connected with a stepping motor, and the supporting rods are connected with the lead screw through a transmission table with a thread. The selective laser melting\sintering powder separating and recycling device is simple in structure, convenient to operate, safe, reliable, high in working efficiency and environmentally friendly.
Description
Technical field:
The invention belongs to rapid shaping 3D printing technique field, relate to a kind of selective laser melting (SLM) sintering (SLS) powder separation and retracting device and method.
Background technology:
Select selective laser melting technology (SLM) and selecting property laser sintering technology (SLS) be metal important in 3D printing technique the direct manufacturing technology of polymer.Both principles are substantially identical, all the basic thought based on rapid shaping: according to the hierarchy slicing information of three-dimensional CAD model, scanning system controls laser and scans powder bed, powder smelting or partial melting is made to be set in together, after one deck powder is scanned, powder-supply system can control scraper plate and be scraped by powder on shape layer from powder cylinder, then above-mentioned scanning-paving powder process is repeated, until the slicing layer of all three-dimensional CAD models is all scanned, finally, workbench rises, and is taken out by profiled member from powder.
Selective laser melting technology (SLM) and Selective Laser Sintering (SLS) have process velocity fast, with short production cycle, without the need to cutting and the advantage of mould, directly can process the part with hollow structure complicated shape that conventional machining techniques cannot be processed.Although SLM technology has above-mentioned many advantages, but in its manufacture process, still there is a lot of problem: operating personnel need direct contacting metal powder to operate in part cleaning with Powder Recovery process, thus cause the danger such as respiratory disease and slow poisoning, and this process very expends man-hour, reduce selective laser melting (SLM) sintering (SLS) manufacture efficiency.
Summary of the invention:
The object of the invention is to the shortcoming overcoming prior art existence, seek design provide a kind of selective laser melting (SLM) sintering (SLS) powder separation and the device and method of recovery, by these apparatus and method realize selective laser melting (SLM) being automatically separated of part and powder in sintering (SLS) last handling process, make operator not contact powder and reclaim processing parts and residual powder.
To achieve these goals, selective laser melting of the present invention sintered powder be separated and comprise upper stages, bottom workbench, electric control valve, support bar, valve, working chamber, leak stoppage device, leading screw, Powder Recovery bottle, stepper motor, stroke cylinder and threaded transmission platform with the agent structure of retracting device; In the inner chamber of stroke cylinder, cancellated upper stages is installed, upper stages connect and compose workbench with the bottom workbench of funnel type structure, the bottom of bottom workbench is provided with electric control valve, bottom, the both sides symmetry of bottom workbench is shaped with four support bars, and the junction bottom support bar and stroke cylinder is provided with leak stoppage device; Cavity between workbench and stroke cylinder forms working chamber, and the bottom of working chamber is communicated with Powder Recovery bottle, and the junction of Powder Recovery bottle and working chamber is provided with valve; The bottom of stroke cylinder is connected with leading screw, and leading screw is connected with stepper motor, and support bar is connected with leading screw by threaded transmission platform.
The present invention carries out being separated to powder:
(1), by upper stages and bottom workbench be combined into one formation workbench, closes electric control valve and valve simultaneously;
(2), to workbench powder filler start to manufacture workpiece, the height of workbench reduces gradually along with the increase of workpiece manufacture height, until workpiece manufacture completes, after workpiece manufacture completes, working chamber is filled completely by powder;
(3), open electric control valve, upper stages and bottom workbench are risen gradually by leading screw and support bar transmission under the driving of stepper motor; Rise on the table in process, powder flow to working chamber by upper stages and electric control valve under gravity, and leak stoppage device prevents powder from the gap leakage between working chamber and support bar;
(4), when the workbench of upper stages and bottom workbench combination formation rises to initialization position, after the powder be positioned at above workbench all flows into working chamber, the workpiece manufactured is fetched;
(5), open valve, after the powder in working chamber all flows into Powder Recovery bottle, close electric control valve and valve, reclaim powder returnable bottle, realize separation and the recovery of powder.
The present invention compared with prior art, traditional template workbench is substituted by the valvular separable workbench of reticular zone, make residual powder can flow in Powder Recovery bottle through workbench after workpiece manufacture completes, simplify Powder Recovery process, avoid operating personnel's contacting metal powder, reduce dangerous, decrease the man-hour that cleaning part reclaims powder, highly shortened last handling process, improve operating efficiency; Its structure is simple, and easy to operate, safe and reliable, operating efficiency is high, environmental friendliness.
Accompanying drawing illustrates:
Fig. 1 is agent structure principle schematic of the present invention.
Fig. 2 is the structural principle schematic diagram after workpiece manufacture of the present invention completes.
Fig. 3 is the structural principle schematic diagram of powder stream of the present invention to working chamber.
Fig. 4 is the structural principle schematic diagram that powder of the present invention flows into Powder Recovery bottle.
Detailed description of the invention:
Below by embodiment, also the present invention will be further described by reference to the accompanying drawings.
Embodiment:
Selective laser melting described in the present embodiment sintered powder be separated and comprise upper stages 1, bottom workbench 2, electric control valve 3, support bar 4, valve 5, working chamber 6, leak stoppage device 7, leading screw 8, Powder Recovery bottle 9, stepper motor 10, stroke cylinder 11 and threaded transmission platform 12 with the agent structure of retracting device; Cancellated upper stages 1 is installed in the inner chamber of stroke cylinder 11, upper stages 1 connect and compose workbench with the bottom workbench 2 of funnel type structure, the bottom of bottom workbench 2 is provided with electric control valve 3, bottom, the both sides symmetry of bottom workbench 2 is shaped with four support bars 4, and support bar 4 is provided with leak stoppage device 7 with the junction bottom stroke cylinder 11; Cavity between workbench and stroke cylinder 11 forms working chamber 6, and the bottom of working chamber 6 is communicated with Powder Recovery bottle 9, and Powder Recovery bottle 9 is provided with valve 5 with the junction of working chamber 6; The bottom of stroke cylinder 11 is connected with leading screw 8, and leading screw 8 is connected with stepper motor 10, and support bar 4 is connected with leading screw 8 by threaded transmission platform 14.
The present embodiment carries out being separated to powder:
(1), by upper stages 1 and bottom workbench 2 be combined into one formation workbench, closes electric control valve 3 and valve 5 simultaneously;
(2), to workbench powder filler 12 start to manufacture workpiece 13, the height of workbench manufactures the increase of height along with workpiece 13 and reduces gradually, until workpiece 13 has manufactured, after workpiece 13 has manufactured, working chamber 6 is filled completely by powder 12;
(3), open electric control valve 3, upper stages 1 and bottom workbench 2 are risen gradually by leading screw 8 and support bar 4 transmission under the driving of stepper motor 10; Rise on the table in process, powder 12 flow to working chamber 6 by upper stages 1 and electric control valve 3 under gravity, and leak stoppage device 7 prevents powder 12 from the gap leakage between working chamber 6 and support bar 4;
(4), when upper stages 1 and bottom workbench 2 combine the workbench formed rise to initialization position, after the powder 12 be positioned at above workbench all flows into working chamber 6, fetch the workpiece 12 manufactured;
(5), open valve 5, after the powder in working chamber 6 all flows into Powder Recovery bottle 9, close electric control valve 3 and valve 5, reclaim powder returnable bottle 9, realize separation and the recovery of powder.
Claims (2)
1. Xuan Zexingjiguangronghua sintered powder is separated and a retracting device, it is characterized in that agent structure comprises upper stages, bottom workbench, electric control valve, support bar, valve, working chamber, leak stoppage device, leading screw, Powder Recovery bottle, stepper motor, stroke cylinder and threaded transmission platform; In the inner chamber of stroke cylinder, cancellated upper stages is installed, the bottom workbench of upper stages and funnel type structure connects and composes workbench, the bottom of bottom workbench is provided with electric control valve, bottom, the both sides symmetry of bottom workbench is shaped with four support bars, and the junction bottom support bar and stroke cylinder is provided with leak stoppage device; Cavity between workbench and stroke cylinder forms working chamber, and the bottom of working chamber is communicated with Powder Recovery bottle, and the junction of Powder Recovery bottle and working chamber is provided with valve; The bottom of stroke cylinder is connected with leading screw, and leading screw is connected with stepper motor, and support bar is connected with leading screw by threaded transmission platform.
2. adopt Xuan Zexingjiguangronghua sintered powder to be as claimed in claim 1 separated a method of carrying out powder separation and recovery with retracting device, it is characterized in that the detailed process carried out being separated to powder and reclaim is:
(1), by upper stages and bottom workbench be combined into one formation workbench, closes electric control valve and valve simultaneously;
(2), to workbench powder filler start to manufacture workpiece, the height of workbench reduces gradually along with the increase of workpiece manufacture height, until workpiece manufacture completes, after workpiece manufacture completes, working chamber is filled completely by powder;
(3), open electric control valve, upper stages and bottom workbench are risen gradually by leading screw and support bar transmission under the driving of stepper motor; Rise on the table in process, powder flow to working chamber by upper stages and electric control valve under gravity, and leak stoppage device prevents powder from the gap leakage between working chamber and support bar;
(4), when the workbench of upper stages and bottom workbench combination formation rises to initialization position, after the powder be positioned at above workbench all flows into working chamber, the workpiece manufactured is fetched;
(5), open valve, after the powder in working chamber all flows into Powder Recovery bottle, close electric control valve and valve, reclaim powder returnable bottle, realize separation and the recovery of powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510167065.XA CN104722759B (en) | 2015-04-10 | 2015-04-10 | A kind of selective laser melting sintered powder be separated and retracting device and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510167065.XA CN104722759B (en) | 2015-04-10 | 2015-04-10 | A kind of selective laser melting sintered powder be separated and retracting device and method |
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| Publication Number | Publication Date |
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| CN104722759A true CN104722759A (en) | 2015-06-24 |
| CN104722759B CN104722759B (en) | 2016-01-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510167065.XA Expired - Fee Related CN104722759B (en) | 2015-04-10 | 2015-04-10 | A kind of selective laser melting sintered powder be separated and retracting device and method |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105033265A (en) * | 2015-08-26 | 2015-11-11 | 硕威三维打印科技（上海）有限公司 | System and method for recycling and reusing laser forming old powder |
| CN105170988A (en) * | 2015-09-28 | 2015-12-23 | 华南理工大学 | Method and device for recycling residual powder on metal material increase manufacturing substrate |
| CN106735214A (en) * | 2016-12-30 | 2017-05-31 | 湖南航天新材料技术研究院有限公司 | The 3D printing device and 3D printing manufacturing process of a kind of Functional Gradient Materials |
| CN110202789A (en) * | 2019-06-26 | 2019-09-06 | 北京易加三维科技有限公司 | Continuous stepless variable powder feeder unit for increasing material manufacturing |
| CN110621481A (en) * | 2017-04-13 | 2019-12-27 | 通快激光与系统工程有限公司 | Device and method for removing an object produced by layer-by-layer application |
| CN110814346A (en) * | 2019-12-02 | 2020-02-21 | 武汉光谷航天三江激光产业技术研究有限公司 | Powder recovery device and method for metal 3D printing equipment |
| CN110914040A (en) * | 2017-07-28 | 2020-03-24 | 惠普发展公司，有限责任合伙企业 | Three-dimensional printer |
| US11084099B2 (en) | 2017-12-21 | 2021-08-10 | Delavan Inc. | Discrete lot powder management for additive manufacturing |
| CN114472919A (en) * | 2021-12-21 | 2022-05-13 | 航发优材(镇江)增材制造有限公司 | Forming process of porous metal thin net structure |
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| EP1669143A1 (en) * | 2004-12-07 | 2006-06-14 | 3D Systems, Inc. | Method of controlled cooling of a laser sintered powder object and apparatus therefore |
| CN203409250U (en) * | 2013-09-05 | 2014-01-29 | 哈尔滨师范大学 | Selective laser sintering workbench with powder recovery devices |
| CN103978211A (en) * | 2014-05-23 | 2014-08-13 | 北京理工大学 | Powder laying and recovering device for selective laser melting of heterogeneous material |
| CN204194799U (en) * | 2014-10-24 | 2015-03-11 | 华南理工大学 | A kind of powder recovering device being applied to powder presetting system 3D print system |
-
2015
- 2015-04-10 CN CN201510167065.XA patent/CN104722759B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1669143A1 (en) * | 2004-12-07 | 2006-06-14 | 3D Systems, Inc. | Method of controlled cooling of a laser sintered powder object and apparatus therefore |
| CN203409250U (en) * | 2013-09-05 | 2014-01-29 | 哈尔滨师范大学 | Selective laser sintering workbench with powder recovery devices |
| CN103978211A (en) * | 2014-05-23 | 2014-08-13 | 北京理工大学 | Powder laying and recovering device for selective laser melting of heterogeneous material |
| CN204194799U (en) * | 2014-10-24 | 2015-03-11 | 华南理工大学 | A kind of powder recovering device being applied to powder presetting system 3D print system |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105033265A (en) * | 2015-08-26 | 2015-11-11 | 硕威三维打印科技（上海）有限公司 | System and method for recycling and reusing laser forming old powder |
| CN105170988A (en) * | 2015-09-28 | 2015-12-23 | 华南理工大学 | Method and device for recycling residual powder on metal material increase manufacturing substrate |
| CN106735214A (en) * | 2016-12-30 | 2017-05-31 | 湖南航天新材料技术研究院有限公司 | The 3D printing device and 3D printing manufacturing process of a kind of Functional Gradient Materials |
| CN110621481A (en) * | 2017-04-13 | 2019-12-27 | 通快激光与系统工程有限公司 | Device and method for removing an object produced by layer-by-layer application |
| CN110914040A (en) * | 2017-07-28 | 2020-03-24 | 惠普发展公司，有限责任合伙企业 | Three-dimensional printer |
| US11465342B2 (en) | 2017-07-28 | 2022-10-11 | Hewlett-Packard Development Company, L.P. | Three-dimensional printer |
| US11084099B2 (en) | 2017-12-21 | 2021-08-10 | Delavan Inc. | Discrete lot powder management for additive manufacturing |
| US11919079B2 (en) | 2017-12-21 | 2024-03-05 | Collins Engine Nozzles, Inc. | Discrete lot powder management for additive manufacturing |
| CN110202789A (en) * | 2019-06-26 | 2019-09-06 | 北京易加三维科技有限公司 | Continuous stepless variable powder feeder unit for increasing material manufacturing |
| CN110814346A (en) * | 2019-12-02 | 2020-02-21 | 武汉光谷航天三江激光产业技术研究有限公司 | Powder recovery device and method for metal 3D printing equipment |
| CN114472919A (en) * | 2021-12-21 | 2022-05-13 | 航发优材(镇江)增材制造有限公司 | Forming process of porous metal thin net structure |
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| CN104722759B (en) | 2016-01-13 |
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