CN107498051A - A kind of feed cylinder powder isolating device for precinct laser fusion - Google Patents
A kind of feed cylinder powder isolating device for precinct laser fusion Download PDFInfo
- Publication number
- CN107498051A CN107498051A CN201710857935.5A CN201710857935A CN107498051A CN 107498051 A CN107498051 A CN 107498051A CN 201710857935 A CN201710857935 A CN 201710857935A CN 107498051 A CN107498051 A CN 107498051A
- Authority
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- Prior art keywords
- feed cylinder
- cylinder
- feed
- outer layer
- push rod
- Prior art date
- 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.)
- Pending
Links
- 239000000843 powder Substances 0.000 title claims abstract description 20
- 230000004927 fusion Effects 0.000 title claims abstract description 16
- 238000007789 sealing Methods 0.000 claims abstract description 26
- 210000000056 organ Anatomy 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims 1
- 239000002184 metal Substances 0.000 abstract description 15
- 229910052751 metal Inorganic materials 0.000 abstract description 15
- 238000010146 3D printing Methods 0.000 abstract description 8
- 238000005516 engineering process Methods 0.000 description 9
- 230000006872 improvement Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 7
- 230000007246 mechanism Effects 0.000 description 7
- 239000000428 dust Substances 0.000 description 6
- 230000003028 elevating effect Effects 0.000 description 6
- 239000011261 inert gas Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000000149 argon plasma sintering Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010894 electron beam technology Methods 0.000 description 2
- 229910001111 Fine metal Inorganic materials 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 239000008393 encapsulating agent Substances 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002633 protecting effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- B22F12/22—Driving means
- B22F12/222—Driving means for motion along a direction orthogonal to the plane of a layer
-
- 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
- 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
- B22F12/50—Means for feeding of material, e.g. heads
-
- 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
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/003—Apparatus, e.g. furnaces
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
Abstract
The invention discloses a kind of feed cylinder powder isolating device for precinct laser fusion, belong to metal 3D printing field, it is intended to solve the problems, such as that the leakage powder of feed cylinder, air-tightness be not strong, by setting special sealing device effectively to be sealed.
Description
Technical field
The present invention relates to precinct laser fusion increases material manufacturing technology field.
Background technology
3D printing technique, if being exactly that 3D CAD models are divided into dried layer in a computer, by 3D printing equipment at one
According to the layered graph of 3D CAD models in plane, successively plastics, the metal even material such as biological tissue activity cell are sintered
Or stick together, eventually form a three-dimensional body.
Metal parts 3D printing technique is advanced as forward position and most potential technology the most in whole 3D printing system
The important development direction of manufacturing technology.With the demand of development in science and technology and popularization and application, gold is directly manufactured using 3D printing technique
Function of dominant part becomes the main developing direction of 3D printing.It is presently available for the 3D printing side of directly manufacture metal function part
Method mainly has：Including direct metal laser sintering (Direct Metal Laser Sintering, DMLS), precinct laser
Fusing（Selective Laser Melting, SLM）Technology, laser near-net-shape（Laser Engineered Net
Shaping, LENS）Technology and electron beam selective melting（Electron Beam Selective Melting, EBSM）Skill
Art.
Precinct laser fusion forming technique be grow up using SLS rapid prototyping technologies as general principle it is a kind of advanced
Laser gain material manufacturing technology.Slicing delamination is carried out to part three-dimensional digital-to-analogue by special-purpose software, obtains the outline data in each section
Afterwards, by successively powdering, successively melted according to outline data successively optionally fusing metal powder using high energy laser beam
The mode of solidification-stack, manufacture 3-dimensional metal part.Because precinct laser fusion increasing material manufacturing equipment needs in process
Inert gas shielding, it is desirable to which the moving piston being fed in cylinder needs good dynamic sealing characteristic.And cylinder is fed in print procedure
Equipped with a large amount of metal dusts, the particle diameter of these metal dusts is transported repeatedly for a long time typically in some tens of pm magnitude in piston
During dynamic, fine metal particle is had unavoidably and enters sealing surface, so as to increase frictional resistance, accelerates the loss of encapsulant,
It is serious to reduce forming cavity air-tightness and influence the inert gas shielding effect of print procedure, and also result in metal dust leakage
Phenomenon, pollute working environment.
The content of the invention
It is an object of the invention to provide a kind of feed cylinder powder isolating device for precinct laser fusion increasing material manufacturing,
With the purpose for reaching lifting forming cavity protecting effect, reducing inert gas consumption, preventing metal dust leakage.
The invention discloses a kind of feed cylinder for precinct laser fusion, including feed cylinder body and feed rods piston, supply
Material bar piston is connected with the push rod that control feed cylinder piston moves in feed cylinder body, and push rod stretches into confession from the outer wall of feed rods
In material cylinder body, it is characterised in that the push rod periphery in feed cylinder body is provided with circular organ cover, described circular organ cover position
Between being fed cylinder piston and being fed the bottom wall of cylinder body, and contacted respectively with feed cylinder piston and feed cylinder body bottom wall, and energy
Enough to be stretched along between the base arm of feed cylinder piston and feed cylinder body, the periphery for being fed cylinder body is provided with outer layer annular seal space component, outside
It is certain space between layer annular seal space component and feed cylinder body, push rod passes through the bottom of outer layer annular seal space component.
The inside organ cover sealing system and outer layer sealed cylinder block of the present invention is used cooperatively, and realizes metal dust and lazy jointly
The isolating seal of property gas.
As an improvement, outer layer sealed cylinder block includes being provided with counterbore mounting surface, the mounting surface of feed cylinder body upper end is fixed on outside
The counterbore mounting surface of layer annular seal space component, in some versions using integrated molding, using screw thread etc. in other schemes
It is fixed.
As an improvement, the bottom of outer layer sealed cylinder block is provided with circular hole, push rod passes through the circular hole of outer layer sealed cylinder block lower end, and
Dynamic sealing is realized by O-ring seals I, dynamic sealing can ensure that push rod can move up and down along outer layer sealed cylinder block, move close
Envelope uses existing sealing means, in some embodiments using O-ring seals.
As an improvement, described outer layer sealed cylinder block includes table top, feed cylinder outer barrel, feed cylinder end cap, screw II, sealing
Ring cover ring and screw III, collectively constitute outer layer seal cavity;
Feed cylinder outer barrel is connected firmly in table top left side circular hole opening position；
The lower surface that cylinder end cap is arranged on feed cylinder outer barrel by screw II is fed, is fed among cylinder end cap and is provided with circular hole, and fill
There are O-ring seals I to form dynamic sealing with feed cylinder push rod, sealing ring bezel ring, is between feed cylinder end cap and push rod.
As an improvement, it is provided with O-ring seals II between feed cylinder outer barrel and table top.
As an improvement, push rod upper end is connected by screw IV with feed cylinder piston.
As an improvement, feed cylinder piston side forms sealing surface equipped with O-ring seals III and feed cylinder body wall.
As an improvement, feed cylinder piston is linked together below by the upper end with circular organ cover I, circular organ cover I
Lower end be linked together with feed cylinder body lower end inner surface.
The present invention relates to feed cylinder powder isolating device outer layer sealed cylinder block and internal layer feed cylinder elevating mechanism
Two layers of sealing structure, the metal dust in feed cylinder can be effectively isolated with protective gas simultaneously, once O-ring seals
When occurring leakage powder after failure, the refining metallic powder of leakage will be limited between circular organ cover and feed cylinder body, Bu Huisi
Place flies away and pollutes environment, can pull down feed cylinder internal layer sealing mechanism when periodic maintenance and be cleared up and safeguarded；Meanwhile this
The feed cylinder of disclosure of the invention can effectively realize the gas pressure holding effect of forming cavity, reduce the consumption of inert gas.
Feed cylinder disclosed by the invention can by metal dust and the outer layer sealed cylinder block and piston push rod that are fed in cylinder it
Between dynamic sealing face it is completely isolated come, so as to be obviously improved the validity and uniformity of forming cavity inert gas shielding effect,
Also can avoid being fed cylinder metal dust leakage phenomenon completely, additionally by the obvious difficulty of processing and indifferent gas for reducing feed cylinder
Body consumption.
Brief description of the drawings
Fig. 1 is fed cylinder powder isolating device；
Fig. 2 outer layer sealed cylinder block sectional views；
Fig. 3 is fed cylinder elevating mechanism sectional view；
Marked in figure：1 outer layer sealed cylinder block, 2 feed cylinder elevating mechanisms, 3 screws I, 4 O-ring seals I, 5 table tops, 6 feed cylinders
Outer barrel, the 7 feed screws II of cylinder end cap 8,9 sealing ring bezel ring,s, 10 screws III, 11 O-ring seals II, 12 feed cylinder bodies, 13 supply
Material cylinder piston, 14 O-ring seals III, 15 circular organ covers, 16 push rods, 17 screws IV, 18 screws V.
Embodiment
Below in conjunction with the accompanying drawings, the present invention is described in detail.
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Specific embodiment 1：
As shown in figure 1, feed cylinder powder isolating device of the present invention is the portion that laser 3D metallic prints produce lathes
Part, feed cylinder powder isolating device include two layers of sealing structure of outer layer sealed cylinder block 1 and internal layer feed cylinder elevating mechanism 2, feed
The mounting surface of the upper end of cylinder elevating mechanism 2 is fixed with the counterbore mounting surface 1 of outer layer sealed cylinder block by screw I 3.It is fed cylinder lift
The push rod of the lower end of structure 2 passes through the circular hole of the lower end of outer layer sealed cylinder block 1, and realizes dynamic sealing by O-ring seals I 4.
As shown in Fig. 2 described outer layer sealed cylinder block 1 includes table top 5, feed cylinder outer barrel 6, feed cylinder end cap 7, screw II
8th, sealing ring bezel ring, 9 and screw III 10, collectively constitute outer layer sealed chamber；Feed cylinder outer barrel 6 is connected firmly left in table top 5 by screw
Mother rib lateral rotundum opening position, feed cylinder end cap 7 are arranged on the lower surface of feed cylinder outer barrel 6 by screw II 8, are fed among cylinder end cap 7
Circular hole is provided with, and dynamic sealing, feed cylinder outer barrel 6 and table top are formed equipped with O-ring seals I 4 and feed cylinder push rod 16（5）Between set
There are O-ring seals II 11, sealing ring bezel ring, 9 is between feed cylinder end cap 7 and push rod 16
As shown in figure 3, described feed cylinder elevating mechanism includes feed cylinder body 12, feed cylinder piston 13, O-ring seals I 14, circle
Shape organ cover I 15, feed cylinder push rod 16, screw IV 17 and screw V 18；Feed cylinder body 12 connects firmly the left side of table top 5 by screw I 3
It is fed in cylinder outer barrel 6, feed cylinder body 12 lower end is provided with circular hole, and feed cylinder push rod 16 is penetrated from the circular hole in feed cylinder body 12,
The upper end of feed cylinder push rod 16 passes through screw IV 17（Can or can not be 18）Couple with feed cylinder piston 13, the side dress of feed cylinder piston 13
There are O-ring seals III 14 and feed cylinder body 12 wall to form sealing surface, feed cylinder piston 13 is below by screw IV 17 and circle
The upper end of organ cover I 15 is linked together, and lower end and the feed lower end inner surface of cylinder body 12 of circular organ cover I 15 are connected in one
Rise.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should be included in the scope of the protection.
Claims (8)
1. a kind of feed cylinder powder isolating device for precinct laser fusion, including feed cylinder body（12）With feed rods piston
（13）, feed rods piston, which is connected with to control, is fed the push rod that cylinder piston moves in feed cylinder body（16）, push rod（16）From feed
The outside of cylinder is stretched into feed cylinder body, it is characterised in that the push rod periphery in feed cylinder body is provided with circular organ cover（15）,
Described circular organ cover positioned at feed cylinder piston and be fed cylinder body bottom wall between, and respectively with feed cylinder piston and feed cylinder
Body bottom surface connects, and can be stretched between feed cylinder piston and feed cylinder bottom portion, and the periphery for being fed cylinder body is close provided with outer layer
Seal cylinder body（1）, outer layer sealed cylinder block（1）It is chamber between feed cylinder body, push rod passes through outer layer sealed cylinder block（1）Bottom.
2. the feed cylinder powder isolating device according to claim 1 for precinct laser fusion, it is characterised in that：Outer layer
Sealed cylinder block includes the mounting surface provided with counterbore, and the mounting surface of feed cylinder body upper end is fixed on the counterbore installation of outer layer sealed cylinder block
Face（1）.
3. the feed cylinder powder isolating device according to claim 1 for precinct laser fusion, it is characterised in that：Outer layer
Sealed cylinder block（1）Bottom be provided with circular hole, push rod passes through outer layer sealed cylinder block（1）The circular hole of lower end, and pass through O-ring seals I
(4) dynamic sealing is realized.
4. the feed cylinder powder isolating device according to claim 1 for precinct laser fusion, it is characterised in that：It is described
Outer layer sealed cylinder block（1）Include table top（5）, feed cylinder outer barrel（6）, feed cylinder end cap（7）, screw II（8）, sealing ring bezel ring,
（9）With screw III（10）, collectively constitute outer layer seal cavity;
It is fed cylinder outer barrel（6）Connect firmly in table top（5）Left side circular hole opening position；
It is fed cylinder end cap（7）Pass through screw II（8）Installed in feed cylinder outer barrel（6）Lower surface, be fed cylinder end cap（7）Open centre
There is circular hole, and equipped with O-ring seals I (4) and feed cylinder push rod（16）Dynamic sealing is formed, sealing ring bezel ring, is located at feed cylinder end
Between lid and push rod.
5. the feed cylinder powder isolating device according to claim 4 for precinct laser fusion, it is characterised in that：Feed
Cylinder outer barrel（6）And table top（5）Between be provided with O-ring seals II（11）.
6. the feed cylinder powder isolating device according to claim 1 for precinct laser fusion, it is characterised in that：Push rod
（16）Upper end passes through screw IV（17）With being fed cylinder piston（13）Connection.
7. the feed cylinder powder isolating device according to claim 1 for precinct laser fusion, it is characterised in that：Feed
Cylinder piston（13）Side is equipped with O-ring seals III（14）With being fed cylinder body（12）Wall forms sealing surface.
8. the feed cylinder powder isolating device according to claim 1 for precinct laser fusion, it is characterised in that：Feed
Cylinder piston（13）Below by with circular organ cover I（15）Upper end be linked together, circular organ cover I（15）Lower end and confession
Material cylinder body（12）Lower end inner surface is linked together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710857935.5A CN107498051A (en) | 2017-09-21 | 2017-09-21 | A kind of feed cylinder powder isolating device for precinct laser fusion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710857935.5A CN107498051A (en) | 2017-09-21 | 2017-09-21 | A kind of feed cylinder powder isolating device for precinct laser fusion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107498051A true CN107498051A (en) | 2017-12-22 |
Family
ID=60697160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710857935.5A Pending CN107498051A (en) | 2017-09-21 | 2017-09-21 | A kind of feed cylinder powder isolating device for precinct laser fusion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107498051A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110549616A (en) * | 2018-06-04 | 2019-12-10 | 陕西恒通智能机器有限公司 | Retractable 3D printing apparatus |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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