CN106392065A - Flexible powder laying device and manufacturing method thereof - Google Patents
Flexible powder laying device and manufacturing method thereof Download PDFInfo
- Publication number
- CN106392065A CN106392065A CN201610873834.2A CN201610873834A CN106392065A CN 106392065 A CN106392065 A CN 106392065A CN 201610873834 A CN201610873834 A CN 201610873834A CN 106392065 A CN106392065 A CN 106392065A
- Authority
- CN
- China
- Prior art keywords
- spreading device
- power spreading
- holding tank
- flexible
- rigid bodies
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive 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
- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
- B29C64/205—Means for applying layers
- B29C64/214—Doctor blades
-
- 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
- B22F3/004—Filling molds with 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
- 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
- B33Y10/00—Processes of additive manufacturing
-
- 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
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Silicon Compounds (AREA)
Abstract
The invention discloses a flexible powder laying device. The flexible powder laying device comprises a rigidity body and a flexible scraper. A containing groove is formed in the lower edge of the rigidity body, the flexible scraper is embedded in the containing groove of the rigidity body, and a whole is formed by the flexible scraper and the rigidity body. The invention further discloses a method for manufacturing the flexible powder laying device. The method comprises the steps that the rigidity body machined in advance is placed in the corresponding position of a casting die through the casting die, then, liquid silica gel is poured in a cavity defined by the rigidity body and the casting die, and after the liquid silica gel is condensed, the die is dismounted, and the integral flexible powder laying device is obtained. The problem that when an existing flexible powder laying device is pressed and installed, deformation is likely to happen is solved.
Description
Technical field
The invention belongs to 3D printing technique field is and in particular to a kind of flexibility power spreading device, the invention still further relates to above-mentioned soft
The preparation method of property power spreading device.
Background technology
3D printing technique is a kind of method of metalwork straight forming, is the latest development of rapid shaping technique.This technology
Based on the most basic thought of rapid shaping, that is, " increment " manufacture of successively cladding, has according to three-dimensional CAD model straight forming
The part of geometry in particular, in forming process, metal dust is completely melt, produces metallurgical binding.Using traditional machining hand
The metal parts of the shape and structure complexity that Duan Wufa produces, is one of Main way of 3D printing technique application.
The forming process of the 3D printing technique based on powdering mode is as follows：Power spreading device lays layer of metal on formation cylinder
Powder, energy beam under the control of the computer, according to drip molding cross sectional shape information, is scanned to powder, makes in scanning area
Powder fusing, obtain drip molding individual layer；Then formation cylinder declines the distance of thick layer, and power spreading device powdering again, under continuation
One layer of shaping；So successively it is superimposed, the final metal parts obtaining geometry in particular.
It is desirable to metal dust uniformly, entirely can be layered on formation cylinder by power spreading device in above-mentioned forming process, existing
Have in technology, typically powdering is carried out using scraper.Scraper can be divided into rigid scraper and flexible scraper according to the difference of scraper material
Two big class.Wherein, rigid scraper is made using simple metal or pottery, and flexible scraper is made using the flexible material of such as silica gel.
The phenomenon such as converge, splash due to powder in forming process, typically can be produced, and on drip molding surface often
Raised points occur, powdering are carried out using rigid scraper, when drip molding surface raised, be susceptible to scraper card and stop phenomenon,
Forming process is forced to stop；Rigid scraper is substituted using flexible scraper, scraper during powdering can be avoided well to occur
Card stops, but, compared to rigid scraper, flexible scraper there is also the deficiency of intensity aspect.
In addition, existing flexible scraper is mostly using silica gel strip or the silica gel stick of cylinder or square-section, its fixation side
Formula, similar to rigid scraper, using metal platen and some screws, scraper is fastened in power spreading device agent structure.So
And, due to plasticity and the retractility of the flexible materials such as silica gel itself presence, in the installation process of scraper, the pressure of metal platen
Skewness, can lead to the compress variation of flexible scraper inconsistent, and then leads to scraper to be distorted deformation.And metal pressure
The pressure distribution of plate belongs to uncontrollable factor, so the linearity of scraper itself is difficult to ensure that.Especially for two-way powder laying dress
Put the double doctor mode being adopted, being uneven of this flexible scraper itself can have a strong impact on the quality of powdering.
Content of the invention
It is an object of the invention to provide a kind of flexibility power spreading device, solve when existing flexibility power spreading device compression is installed and hold
It is also easy to produce the problem of deformation.
It is a further object to provide the preparation method of above-mentioned flexibility power spreading device.
The first technical scheme of the present invention is, a kind of flexibility power spreading device, scrapes including rigid bodies and flexibility
Knife, rigid bodies lower edge has holding tank, and flexible scraper is embedded in the holding tank of rigid bodies and is combined closely with rigid bodies
And form an entirety.
The feature of the first technical scheme of the present invention also resides in：
Holding tank is dovetail groove.
Holding tank includes dovetail groove and the extension slot being connected from bottom to top along the lower edge of rigid bodies.
Holding tank includes extension slot and the dovetail groove being connected from bottom to top along the lower edge of rigid bodies.
Holding tank inner surface has sandblasting layer.
Flexible scraper includes body portion that the holding tank of shape and rigid bodies matches and extends along body portion
Knife edge part outside holding tank.
Flexible scraper is inlayed in the holding tank of rigid bodies by noting casting mode.
Second technical scheme of the present invention is that a kind of method making flexible power spreading device, including by note
Casting mould, pre-processed rigid bodies is positioned over relevant position in note casting mould, is then poured into just liquid-state silicon gel
Property main body and the note cavity that surrounds of casting mould in, after liquid-state silicon gel solidification, remove mould, obtain complete flexible powdering and fill
Put.
The feature of second technical scheme of the present invention also resides in：
Note casting mould includes lower mould, and lower mould includes left side mold and right side mold, and left side mold and right side mold surround
Internal cavities shape is consistent with the shape of flexible power spreading device, and two end side surface of lower mould are provided with die side plate, the upper end of lower mould
It is provided with die cover plate.
Left side mold, right side mold, die side plate are provided with the passage for exhaust.
The invention has the beneficial effects as follows：The present invention flexibility power spreading device, when being fixed using compressing member, rigid bodies with
Compressing member directly contact, therefore flexible scraper are not forced or stress is very little, will not produce conventional flex scraper and install admittedly
The problem on deformation of timing；Present invention flexibility power spreading device, had both maintained the due intensity of rigid power spreading device, and had taken into account now again
Flexible power spreading device avoids the advantage that card stops.
Brief description
Fig. 1 is the cross-sectional view of the embodiment 1 of present invention flexibility power spreading device；
Fig. 2 is the cross-sectional view of the embodiment 2 of present invention flexibility power spreading device；
Fig. 3 is the cross-sectional view of the embodiment 3 of present invention flexibility power spreading device；
Fig. 4 is present invention note casting mould structural representation；
Fig. 5 is that during present invention note is cast, rigid bodies are fixed on the cross-sectional view in note casting mould.
In figure, 1. rigid bodies, 2. flexible scraper, 3. left side mold, 4. right side mold, 5. die side plate, 6. die cover
Plate.
Specific embodiment
The present invention is described in detail with reference to the accompanying drawings and detailed description.
Present invention flexibility power spreading device, including rigid bodies 1 and flexible scraper 2, rigid bodies 1 are the strip of closed upper part
Structure, rigid bodies 1 lower edge has holding tank, flexible scraper 2 by note casting mode be embedded in the holding tank of rigid bodies 1,
Combine closely and formed an entirety with rigid bodies 1.Flexible scraper 2 is used for powdering, and rigid bodies 1 are used for flexible scraper 2
Fixing and intensity keeps.The material of rigid bodies 1 can be metal, pottery etc..
Embodiment 1
As shown in figure 1, holding tank is dovetail groove, can prevent flexible scraper 2 from coming off.
Embodiment 2
As shown in Fig. 2 holding tank includes dovetail groove and the extension slot being connected from bottom to top along the lower edge of rigid bodies 1,
Extension slot plays the effect of opposing moment of torsion, and prevents flexible scraper 2 from coming off further.
Embodiment 3
As shown in figure 3, holding tank includes extension slot and the dovetail groove being connected from bottom to top along the lower edge of rigid bodies 1.
Holding tank inner surface can also carry out blasting treatment, improve the roughness of holding tank inner surface, prevent flexible scraper 2
Depart from rigid bodies 1.
Flexible scraper 2 includes body portion that the holding tank of shape and rigid bodies 1 matches and extends along body portion
Go out the knife edge part outside holding tank, body portion and knife edge part are integrally formed.Flexible scraper is made using silica gel material.
The present invention, using note casting technology, by note casting mould, liquid-state silicon gel is poured in the holding tank of rigid bodies 1, treats
After liquid-state silicon gel solidification, remove mould, obtain complete flexible power spreading device.
Note casting mould, as shown in figure 4, including lower mould, lower mould includes left side mold 3 and right side mold 4, left side mold 3 He
The internal cavities shape of right side mold 4 is consistent with the shape of flexible power spreading device, and two end side surface of lower mould are provided with die side plate
5, the upper end of lower mould is provided with die cover plate 6 (as shown in Figure 5).Left side mold 3, right side mold 4, die cover plate 6 and mould
Adopt between side plate 5 and be screwed.Cast successfully to ensure that flexible power spreading device is noted, left side mold 3, right side mold 4, die side
Plate 5 is provided with the passage for exhaust.
Using the concrete preparation method that note casting mould makes flexible power spreading device it is：
Step 1：According to flexible power spreading device shape, the rigid bodies of pre-processed note casting mould and flexible power spreading device
1；
Step 2：Rigid bodies 1 are positioned over correspondence position in the cavity that left side mold 3 and right side mold 4 are constituted, and adopt
It is screwed compression rigid bodies 1；
Step 3：Liquid silica gel is poured from top to bottom and casts from cavity along the casting gate of note casting mould, and using screw by mould
Tool cover plate 6 is fixed in left side mold 3 and right side mold 4, and to compress the liquid silica gel in cavity, standing treats that liquid silica gel cools down
Solidification；
Step 4：Remove mould, obtain complete flexible power spreading device.
The cross-sectional view that during note casting, rigid bodies are fixed in note casting mould is as shown in Figure 5.
The present invention is using note casting flexible scraper 2 in the holding tank of rigid bodies 1 it is ensured that flexible power spreading device is rigidly main
The fitting tightly of body 1 and flexible scraper 2.
Present invention flexibility power spreading device, in fixed installation, is fixed using compressing member, due to directly being connect with compressing member
Tactile is the rigid bodies 1 of present invention flexibility power spreading device, and therefore flexible scraper 2 part is not forced or stress is very little, no
Problem on deformation when conventional flex scraper installs fixing can be produced.
In addition, present invention flexibility power spreading device is after a long time use, because the factors such as abrasion are scrapped, rigid bodies can be eliminated
Flexible scraper 2 in 1, repeats note casting and uses, reduce the replacement cost of power spreading device.
Claims (10)
1. a kind of flexibility power spreading device is it is characterised in that include rigid bodies (1) and flexible scraper (2), under rigid bodies (1)
Along having holding tank, flexible scraper (2) is embedded in the holding tank of rigid bodies (1) and rigid bodies (1) are combined closely and shape
Become an entirety.
2. a kind of flexibility power spreading device according to claim 1 is it is characterised in that described holding tank is dovetail groove.
3. a kind of flexibility power spreading device according to claim 1 is it is characterised in that described holding tank is included along described rigidity
Dovetail groove and extension slot that the lower edge of main body (1) is connected from bottom to top.
4. a kind of flexibility power spreading device according to claim 1 is it is characterised in that described holding tank is included along described rigidity
Extension slot and dovetail groove that the lower edge of main body (1) is connected from bottom to top.
5. a kind of flexibility power spreading device according to claim 1-4 any one is it is characterised in that table in described holding tank
Face has sandblasting layer.
6. a kind of flexibility power spreading device according to claim 1 is it is characterised in that described flexible scraper (2) includes shape
The body portion that matches with the holding tank of rigid bodies (1) and extend the knife edge part outside holding tank along body portion.
7. a kind of flexibility power spreading device according to claim 1 is it is characterised in that described flexible scraper (2) is cast by note
Mode is inlayed in the holding tank of described rigid bodies (1).
8. a kind of method of the flexible power spreading device making described in claim 1 it is characterised in that include by note casting mould,
Pre-processed rigid bodies (1) are positioned over relevant position in note casting mould, then liquid-state silicon gel are poured into rigid master
In the cavity that body (1) is surrounded with note casting mould, after liquid-state silicon gel solidification, remove mould, obtain complete flexible power spreading device.
9. it is characterised in that described note casting mould includes lower mould, lower mould includes left side mould to method according to claim 8
The internal cavities shape that tool (3) and right side mold (4), left side mold (3) and right side mold (4) surround and flexible power spreading device
Shape is consistent, and two end side surface of lower mould are provided with die side plate (5), and the upper end of lower mould is provided with die cover plate (6).
10. method according to claim 9 is it is characterised in that described left side mold (3), right side mold (4), die side
Plate (5) is provided with the passage for exhaust.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610873834.2A CN106392065B (en) | 2016-09-30 | 2016-09-30 | A kind of flexibility power spreading device and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610873834.2A CN106392065B (en) | 2016-09-30 | 2016-09-30 | A kind of flexibility power spreading device and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
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| CN106392065A true CN106392065A (en) | 2017-02-15 |
| CN106392065B CN106392065B (en) | 2019-07-23 |
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| CN201610873834.2A Active CN106392065B (en) | 2016-09-30 | 2016-09-30 | A kind of flexibility power spreading device and preparation method thereof |
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Cited By (4)
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|---|---|---|---|---|
| CN106945288A (en) * | 2017-04-10 | 2017-07-14 | 西安铂力特激光成形技术有限公司 | A kind of increasing material manufacturing equipment scraper failure automatic processing method |
| CN107931608A (en) * | 2017-11-20 | 2018-04-20 | 芜湖天梦信息科技有限公司 | It is a kind of to scrape knife plate with compacting functions |
| EP3378629A1 (en) * | 2017-03-24 | 2018-09-26 | Rolls-Royce plc | Recoater for additive layer manufacture |
| CN109454870A (en) * | 2018-09-13 | 2019-03-12 | 上海航天精密机械研究所 | The power spreading device and powdering method of automatically replaceable scraper in a kind of SLM forming process |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN106392065B (en) | 2019-07-23 |
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Address after: 710075 No. 1000 Shanglinyuan No. 7 Road, Xi'an High-tech Zone, Shaanxi Province Applicant after: Xi'an platinum power technology Limited by Share Ltd Address before: 710075 A0508, pioneer Plaza, 48 tech Road, Xi'an new high tech Zone, Shaanxi Applicant before: Xi'an Bright Laser Technology Ltd. |
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