CN105598451B - A kind of increasing material manufacturing powder discharging device - Google Patents
A kind of increasing material manufacturing powder discharging device Download PDFInfo
- Publication number
- CN105598451B CN105598451B CN201610116333.XA CN201610116333A CN105598451B CN 105598451 B CN105598451 B CN 105598451B CN 201610116333 A CN201610116333 A CN 201610116333A CN 105598451 B CN105598451 B CN 105598451B
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- CN
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- Prior art keywords
- powder
- powder falling
- axle
- falling
- connector
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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
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/20—Direct sintering or melting
-
- 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
- B22F12/63—Rollers
-
- 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
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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 discloses a kind of increasing material manufacturing powder discharging device, including powder bucket, the bottom of powder bucket is provided with meal outlet, the powder falling axle that can be rotated is provided with below powder bucket, multiple axial notches are provided with the outer surface of powder falling axle center section, powder falling connector is provided between powder bucket and powder falling axle, powder falling connector is the hollow structure of upper and lower opening, the bottom of powder falling connector has and the cylindrical tangent arc section in powder falling axle both ends, powder falling connector is positioned on powder falling axle by gravity, and powder falling connector top is stretched into the meal outlet of powder bucket.The present invention can realize quantitative powder feeding by the powder falling connector being positioned on powder falling axle, and stuck, leakage powder etc. will not occur and supply the insecure problem of powder, while when carrying out powder replacing, be convenient to clean；It ensure that powder falling axle can preferably rotate with powder and stuck and leakage powder phenomenon will not occur in structure of the present invention by using the powder falling axle construction of both ends high, middle low.
Description
Technical field
The invention belongs to increasing material manufacturing equipment technical field, and in particular to a kind of increasing material manufacturing powder discharging device.
Background technology
Increases material manufacturing technology is to be based on three-dimensional CAD model data, by way of increasing material and successively manufacturing.It is in terms of
Calculation machine Three Dimensional Design Model is source, by the way that software hierarchy is discrete and numerical control molding system, using high energy beam by material carry out by
Layer accumulation, final superposition shaping, produces entity products.
The process of increasing material manufacturing has many kinds, is broadly divided into manufacture method based on automatic powder feeding system and based on powdering side
The manufacture method of formula.Based on the manufacture method of powdering mode, its process is：The three-dimensional of part is first designed on computers
Model, slicing delamination is then carried out to the threedimensional model by cutting software, the outline data in each section is obtained, by these data
Import increasing material manufacturing equipment, power spreading device according to predetermined layer thickness shaping cylinder surfaces lay one layer of powder, equipment according to
Outline data control high energy beam optionally melts each layer dusty material, is progressively stacked into 3 d part.
Powder-supply system or below the forming platform in the existing increasing material manufacturing equipment based on powdering mode, passes through work
The powder stored up in powder cylinder is pushed into forming platform by plug；Or above forming platform, powder is utilized certainly using powder falling mode
Body gravity, makes powder fall into power spreading device.Use powder falling mode to supply powder for power spreading device, exist and be difficult to the problem of quantitative, and
During increasing material manufacturing, if there is deviation for powder amount, powdering quality will be influenceed or cause the waste of powder material, it is existing at present
Powder feeder unit by the way that using mechanisms such as sliding blocks, the supply of powder is controlled using the slip of sliding block in storage powder cylinder bottom portion, but due to
Powder size for increasing material manufacturing is very thin, easy adhesion, can adhere on sliding block, cause to slide it is stuck so that the structure
Failure.
A kind of Chinese invention patent " selective laser fusing SLM device power spreading device and powdering method " (application number
CN201310667154.1, publication number CN103691947A, publication date 2014.04.02) in disclose a kind of powder falling structure, should
Structure is integrally made up of the confession powder roller of powder falling main body and position in the inner, and powder falling main body is respectively cylindrical section, arc section from top to bottom
And conical section, cylindrical section are Zai Fen areas, and powder inlet is provided between cylindrical section and arc section, conical section is provided with meal outlet, arc section
It is cylindrical tangent with the circular arc on arc section top for powder roller for being uniformly provided with dovetail groove on powder roller provided with confession powder roller, watched for powder roller
Take and rotated under the driving of motor, the powder in Zai Fen areas is fallen into in the dovetail groove on powder roller by powder inlet, with confession
The rotation of powder roller, powder flow out from meal outlet.
Said structure solves the problems, such as quantitative powder feeding, but because the structure powder falling main body is integral type, arc section and circle
Shell of column, conical section are in integrally connected, cylindrical tangent with the circular arc on arc section top for powder roller, during being rotated for powder roller,
When bulky grain powder is such as run at powder inlet, then it can cause stuck for powder roller.In order to avoid stuck, for powder roller is cylindrical and arc section
There must be certain interval between the circular arc of top, if this gap setting is excessive, leakage powder can occur when supplying powder roller static,
Waste powder material；If gap setting is too small, can not fundamentally solve the problems, such as again it is stuck, in a word, it is stuck and leakage powder lead mutually
Suitable gap size is also not disclosed in system, the patent.In addition, using the device when carrying out powder replacing, for the powder in powder roller
Material is difficult to clean up clean.
The content of the invention
It is an object of the invention to provide a kind of increasing material manufacturing powder discharging device, solve existing for powder discharging device of the prior art
The problem of stuck and leakage powder.
The technical solution adopted in the present invention is：A kind of increasing material manufacturing powder discharging device, including powder bucket, the bottom of powder bucket are set
There is meal outlet, the powder falling axle that can be rotated is provided with below powder bucket, is provided with the outer surface of powder falling axle center section multiple
Axial notch, is provided with powder falling connector between powder bucket and powder falling axle, powder falling connector is the hollow structure of upper and lower opening, powder falling
The bottom of connector has is positioned over powder falling axle with the cylindrical tangent arc section in powder falling axle both ends, powder falling connector by gravity
On, powder falling connector top is stretched into the meal outlet of powder bucket.
The features of the present invention also resides in：
Circumference of multiple axial notches along powder falling axle is uniformly distributed.
Powder falling axle both ends exradius is bigger 0.01~0.2mm than intermediate portion exradius.
Crossbeam is provided with powder bucket, crossbeam is located at the bottom meal outlet both sides of powder bucket.
Two outsides are provided with auricle at the upper opening of powder falling connector, and auricle is stretched into powder bucket and positioned at the upper of crossbeam
Side, when powder falling connector is positioned on powder falling axle by gravity, there are certain interval between auricle and crossbeam.
The upper opening of powder falling connector is arcs of recesses opening.
Powder falling axle is driven by servomotor and rotated.
The beneficial effects of the invention are as follows：A kind of increasing material manufacturing powder discharging device of the present invention, by being positioned over falling on powder falling axle
Powder connector, quantitative powder feeding can not only be realized, and stuck, leakage powder etc. will not occur and supply the insecure problem of powder, while entered
When row powder is changed, it is convenient to clean；It ensure that by using the powder falling axle construction of both ends high, middle low and decline in structure of the present invention
Powder axle can preferably rotate with powder and stuck and leakage powder phenomenon will not occur.
Brief description of the drawings
Fig. 1 is a kind of center sectional view of the structural representation of increasing material manufacturing powder discharging device of the present invention；
Fig. 2 is a kind of both ends of the surface figure of the structural representation of increasing material manufacturing powder discharging device of the present invention；
Fig. 3 is the dimensional structure diagram of powder falling axle in a kind of increasing material manufacturing powder discharging device of the present invention；
Fig. 4 is the plane main structure diagram of powder falling axle in a kind of increasing material manufacturing powder discharging device of the present invention；
Fig. 5 is the partial enlarged drawing marked as C in Fig. 4；
Fig. 6 is the structural representation of powder falling connector in a kind of increasing material manufacturing powder discharging device of the present invention；
Fig. 7 is Fig. 6 A-A sectional views；
Fig. 8 is Fig. 6 B-B sectional views.
In figure, 1. powder buckets, 2. powder falling connectors, 3. powder falling axles, 3a. powder falling shaft ends, 3b. powder falling axles center section, 4.
Crossbeam, 5. meal outlets, 6. powder falling mouths, 7. auricles, 8. arc sections, 9. servomotors, 10. grooves.
Embodiment
The present invention is described in further detail with embodiment below in conjunction with the accompanying drawings：
A kind of increasing material manufacturing powder discharging device of the present invention, as shown in Figure 1 and Figure 2, including powder bucket 1, the bottom of powder bucket 1 are provided with
Meal outlet 5, crossbeam 4 is provided with powder bucket 1, crossbeam 4 is located at the both sides of bottom meal outlet 5 of powder bucket 1.The lower section of powder bucket 1 is provided with
The powder falling axle 3 of rotation can be driven by servomotor 9, powder falling connector 2, powder falling connection are provided between powder bucket 1 and powder falling axle 3
Part 2 is positioned on powder falling axle 3 by gravity, and the top of powder falling connector 2 is stretched into the meal outlet 5 of powder bucket 1.Such as Fig. 3, Fig. 4, Fig. 5
It is shown, the evenly distributed axial groove 10 of multiple circumferences along powder falling axle 3 is provided with the outer surface of the center section of powder falling axle 3,
The both ends 3a exradius of powder falling axle 3 and center section 3b exradius can be with equal, can also be unequal.It is unequal
When, the both ends 3a exradius of powder falling axle 3 is bigger 0.01~0.2mm than intermediate portion 3b exradius.Such as Fig. 6, Fig. 7, Fig. 8 institute
Show, powder falling connector 2 is the hollow structure of upper and lower opening, and the bottom of powder falling connector 2 has and the cylindrical phase in the both ends of powder falling axle 3
The arc section 8 cut.Two outsides are provided with auricle 7 at the upper opening of powder falling connector 2, and auricle 7 is stretched into powder bucket 1 and positioned at horizontal stroke
The top of beam 4, when powder falling connector 2 is positioned on powder falling axle 3 by gravity, between there are between auricle 7 and crossbeam 4 necessarily
Gap, ensure during normal powder falling, the sealing between powder falling connector 2 and powder falling axle 3.The upper opening of powder falling connector 2
For arcs of recesses opening.
During for powder, powder flows out from the meal outlet 5 of the bottom of powder bucket 1, passes through the hollow space and powder falling mouth of powder falling connector 2
6, into the groove 10 on powder falling axle 3, servomotor 9 drives powder falling axle 3 to rotate, because the center section of powder falling axle 3 is with falling
0.01~0.2mm gap between the arc section 8 of the bottom of powder connector 2 be present, therefore, under the driving of servomotor 9, powder falling
Axle 3 can be rotated preferably with powder, so that powder is fallen into power spreading device.When running into bulky grain powder card powder, servo electricity
The driving force of machine 9 can be delivered on powder falling connector 2 by bulky grain powder, because powder falling connector 2 is laid by gravity
In the both ends of powder falling axle 3, therefore, powder falling connector 2 can be jacked up by bulky grain powder so that bulky grain powder by, avoid card
Extremely.
Simultaneously as between the center section 3b of powder falling axle 3 and the arc section 8 of the bottom of powder falling connector 2 have 0.01~
0.2mm gap, this gap size can ensure that powder falling axle 3 will not occur to leak powder under static state.
In said structure, because the distance between powder bucket 1 and powder falling axle 3 are relatively fixed, i.e., therebetween without relative
Displacement, therefore the height of powder falling connector 2 depends entirely on the distance between powder bucket 1 and powder falling axle 3.Thus, it is only required to ensure falling
When powder connector 2 is positioned on powder falling axle 3 by gravity, have one between the auricle 7 on its top and the crossbeam 4 of the bottom of powder bucket 1
Fixed gap.
For powder discharging device of the present invention by the powder falling connector 2 being positioned on powder falling axle 3, guarantee, which is worked as, runs into bulky grain powder card
During powder, powder falling connector 2 is jacked up, and passes through bulky grain powder；Using the structure of the powder falling axle 3 of both ends high, middle low,
Ensure during normal powder falling, powder falling axle 3 preferably band powder can rotate；Simultaneously as the center section of powder falling axle 3 connects with powder falling
There is 0.01~0.2mm gap between the arc section 8 of the bottom of fitting 2, therefore, will not occur under the inactive state of powder falling axle 3
Leak powder；Further, since powder falling connector 2 is positioned on powder falling axle 3, when carrying out powder replacing, powder falling connector can be unloaded
2, and then to clearing up inside the groove 10 of powder falling axle 3, be easy to clean, meanwhile, powder discharging device strong applicability of the present invention, it can fit
Powder conveying for different viscosity and granularity.
Above content is to combine the further description that specific/preferred embodiment is made to the present invention, it is impossible to is recognized
The specific implementation of the fixed present invention is confined to these.For general technical staff of the technical field of the invention, not
On the premise of departing from present inventive concept, it can also make some replacements or modification to the embodiment that these have been described, and this
A little replacements or variant should all be considered as belonging to protection scope of the present invention.
Claims (6)
1. a kind of increasing material manufacturing powder discharging device, it is characterised in that including powder bucket (1), the bottom of powder bucket (1) is provided with meal outlet
(5) the powder falling axle (3) that can be rotated, is provided with below powder bucket (1), is provided with the outer surface of powder falling axle (3) center section
Multiple axial notches (10), are provided with powder falling connector (2) between powder bucket (1) and powder falling axle (3), powder falling connector (2) is upper
The hollow structure of under shed, the bottom of powder falling connector (2) have with the cylindrical tangent arc section (8) in powder falling axle (3) both ends,
Powder falling connector (2) is positioned on powder falling axle (3) by gravity, and the meal outlet of powder bucket (1) is stretched on powder falling connector (2) top
(5) in, powder falling axle (3) the both ends exradius is bigger 0.01~0.2mm than intermediate portion exradius.
A kind of 2. increasing material manufacturing powder discharging device according to claim 1, it is characterised in that the multiple axial notch (10)
It is uniformly distributed along the circumference of the powder falling axle (3).
3. a kind of increasing material manufacturing powder discharging device according to claim 1, it is characterised in that be provided with the powder bucket (1)
Crossbeam (4), crossbeam (4) are located at bottom meal outlet (5) both sides of powder bucket (1).
4. a kind of increasing material manufacturing powder discharging device according to claim 3, it is characterised in that the powder falling connector (2)
Two outsides are provided with auricle (7) at upper opening, and auricle (7) stretches into the powder bucket (1) and is located at the top of crossbeam (4),
Powder falling connector (2) when being positioned on the powder falling axle (3) by gravity, there are between auricle (7) and crossbeam (4) it is certain between
Gap.
5. a kind of increasing material manufacturing powder discharging device according to claim 3, it is characterised in that the powder falling connector (2)
Upper opening is arcs of recesses opening.
A kind of 6. increasing material manufacturing powder discharging device according to any one of claim 1-5, it is characterised in that the powder falling axle
(3) driven and rotated by servomotor (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610116333.XA CN105598451B (en) | 2016-03-01 | 2016-03-01 | A kind of increasing material manufacturing powder discharging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610116333.XA CN105598451B (en) | 2016-03-01 | 2016-03-01 | A kind of increasing material manufacturing powder discharging device |
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| Publication Number | Publication Date |
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| CN105598451A CN105598451A (en) | 2016-05-25 |
| CN105598451B true CN105598451B (en) | 2018-01-26 |
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| CN201610116333.XA Active CN105598451B (en) | 2016-03-01 | 2016-03-01 | A kind of increasing material manufacturing powder discharging device |
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| TWI598213B (en) * | 2016-10-24 | 2017-09-11 | 財團法人國家實驗研究院 | 3d printer powder material supplying apparatus and supplying method |
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| CN106984817B (en) * | 2017-05-28 | 2018-11-30 | 安徽科元三维技术有限公司 | Power spreading device for 3D printer |
| CN107876774A (en) * | 2017-12-27 | 2018-04-06 | 科大天工智能装备技术（天津）有限公司 | A kind of line laser spiral lift increasing material manufacturing equipment |
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| CN112705729B (en) * | 2020-12-16 | 2022-05-17 | 宁波中久东方光电技术有限公司 | Powder discharging method of laser material increasing equipment |
| CN112658285B (en) * | 2020-12-16 | 2022-05-17 | 宁波中久东方光电技术有限公司 | Powder discharging device of laser additive equipment |
| CN115229216A (en) * | 2021-09-29 | 2022-10-25 | 湖南云箭集团有限公司 | Quantitative powder falling device for laser sintering |
| CN114378313B (en) * | 2021-11-01 | 2024-04-05 | 北京星航机电装备有限公司 | Powder falling device for metal 3D printing |
| CN116277377A (en) * | 2023-02-14 | 2023-06-23 | 南京航空航天大学 | Multi-material bidirectional follow-up powder laying method and device for complex ceramic core |
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