CN108145968A - A kind of list scraper two-way powder laying device - Google Patents
A kind of list scraper two-way powder laying device Download PDFInfo
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- CN108145968A CN108145968A CN201711299369.7A CN201711299369A CN108145968A CN 108145968 A CN108145968 A CN 108145968A CN 201711299369 A CN201711299369 A CN 201711299369A CN 108145968 A CN108145968 A CN 108145968A
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- powder
- powder box
- push rod
- separator
- partition board
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- 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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- 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
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Combined Means For Separation Of Solids (AREA)
Abstract
A kind of list scraper two-way powder laying device, including powder box (1) and powder separator (2), powder box (1) is by powder box left plate (13), powder box right plate (16), the structure of upper and lower opening that powder box rear panel (12) and powder box front panel (11) surround, powder separator (2) is installed in powder box (1), it is characterized in that, in powder box (1) inside, there are one partition boards (3), space in powder box (1) is divided into cup (14) and rear chamber (15) by partition board (3), partition board (3) both sides are fixed on powder box left plate (13) and powder box right plate (16)；Partition board (3) lower edge is equipped with scraper (4)；Powder separator (2) can rotate, shaft (23) both ends are fixed on powder box left plate (13) and powder box right plate (16) above partition board along the shaft (23) parallel with partition board；Gear (24) is housed in the shaft (23) on the right of powder separator (2)；The configuration of the present invention is simple, easy to use, a scraper realizes two-way powder laying, and efficient, speed is fast, improves 3D printing speed.
Description
Technical field
The present invention relates to the powdering mechanism of powdering formula 3D printing equipment, in powdering formula 3D printing equipment in working face
High efficiency, equably powdering.
Technical background
Increasing material manufacturing is commonly called as 3D printing, is a kind of to carry out material addition according to three-dimensional digital model and fusion manufactures component
Process, the generally use mode of being layering carries out.Powdering formula 3D printing is a kind of one of main 3D printing forming technique, is beaten
When printing a part, using power spreading device, uniform one layer of powder of shakedown, thickness are usually arrived in 0.02mm on working face first
Between 0.1mm, then laser beam or electron beam is controlled to scan a figure, the figure on working face powder bed by computer
Shape is that the three-dimensional digital model of parts to be processed is carried out a series of two-dimensional section figures that slicing treatment obtains with computer in advance,
By laser beam or electronics beam scanning to powder melt and solidify integral, rest part is still discrete powder, at this time by
Processing part, also " length " is one layer high immediately.Above-mentioned powdering and scanning process are repeated, until entire part is fully formed.In this dozen
During being printed as shape, the step of powdering, is essential, and the uniformity of powdering thickness directly affects the precision of formation of parts
With the indexs such as mechanical property.
Power spreading device can be moved along two sliding rails.Sliding rail is mounted on a bottom plate, bottom plate middle opening, forming board
It is identical with openings of sizes, it is parallel with bottom plate in this opening, and can be with elevating movement.Power spreading device is the one of forming board
Side, bottom are equipped with scraper, and scraper bottom has the height of 0.02mm to 0.1mm with forming board in vertical direction close to bottom plate
Difference.Before each powdering, the stacking powder before scraper, powdering transmission mechanism drive power spreading device to travel forward, skim in advance
Forming board upper surface, at this point, scraper pushes powder to form uniform powder thin layer on forming board, thickness is equal to scraper
Bottom to the difference in height between forming board, the upper surface of bisque become laser beam or electronics beam scanning working face and under
The datum level of powdering.Before powdering next time is carried out, power spreading device returns to home position, and system completes the scanning of this layer
Afterwards, forming board moves downward 0.02mm to 0.1mm, and bisque upper surface just now is made to form difference in height with scraper bottom, so as to
New bisque is formed during powdering next time.
In order to improve printing effect, there is the power spreading device of double scrapers in the market, can realize two-way powder laying.This powdering dress
Be equipped with former and later two scrapers parallel to each other, have between two scrapers enough be laid with two layers of powder powder amount, power spreading device to
During preceding movement, rear side scraper pushes powder to carry out powdering, after completing a powdering, does not return to home position, but waits on the spot
This layer of scanning is completed, forming board returns again to home position after moving downward, and during return movement, front side scraper pushes away
Dynamic powder carries out powdering again.This method carries out powdering using the originally unloaded backstroke of power spreading device, improves powdering
Efficiency.But due to the different scrapers that powdering uses twice, on the parallelism error and vertical direction between two scrapers
The uniformity that height error will all influence bisque, and then influence the quality of printing part.
Zhao Pei et al. " a kind of ' jump ' formula power spreading device for quickly shaping device " (machine applications with research,
2nd phase in 2012) in propose a kind of two-way powder laying device of single scraper, this device is made using the automatic switchover of upper and lower track
Scraping blade realizes unidirectional lifting at the stroke both ends of powdering process, falls, before being always ensured that pile of grounds is in scraping blade direction of advance
End.Although this device is only with a scraper, due to switching the position of scraper while powdering direction is changed, this is than making
It is more difficult to ensure the consistency of powdering twice with two fixed scrapers.
The present invention realizes two-way powder laying using a scraper, and scraper is fixedly connected with powder box, partition board, and opposite transport does not occur
Dynamic, doctor position is stablized, and the datum level of powdering is formed by same scraper each time, it is ensured that powder layer thickness it is consistent
Property and uniformity, and then the quality of formation of parts can be improved.
Invention content
A kind of list scraper two-way powder laying device, including powder box 1 and powder separator 2, powder box 1 is by powder box left plate 13, powder box
The structure of upper and lower opening that right plate 16, powder box rear panel 12 and powder box front panel 11 surround is equipped with powder separator 2 in powder box 1,
It is characterized in that, in 1 inside of powder box there are one partition board 3, the space in powder box 1 is divided into cup 14 and rear chamber 15, partition board by partition board 3
3 both sides are fixed on powder box left plate 13 and powder box right plate 16；3 lower edge of partition board is equipped with scraper 4；Powder separator 2 is in partition board
Top can be rotated along the shaft 23 parallel with partition board, and 23 both ends of shaft are fixed on powder box left plate 13 and powder box right plate 16；
Rack 25 is housed equipped with gear 24,26 one end of push rod in the shaft 23 on 2 the right of powder separator, rack 25 is engaged with gear 24, separately
One end is pierced by powder box front panel 11；Equipped with spring 28 on push rod 26, push rod 26 is released forward；It is limited on push rod 26 equipped with push rod
Block 27, it is determined that push rod 26 is to the extrapolated maximum position of powder box 1；Have on powder separator 2 inclined-plane 29,29 method of inclined-plane be mutually directed toward before on
There are protrusion in side, 29 lower end of inclined-plane, form a powder stoing trough 21；When push rod 26, which is in, is pushed outwardly maximum position, push rod 26
On rack 25 drive 2 shaft 23 of powder separator on gear 24, powder separator 2 is made to turn to a settling position, at this time powder stoing trough
The angle of line and horizontal plane on edge and inclined-plane between peak is α, α=45 °~50 °.
The powder separator 2 rotates under the promotion of push rod, and rotational angle is not less than 2 α.
The configuration of the present invention is simple, easy to use, a scraper realizes two-way powder laying, and efficient, speed is fast, improves 3D and beats
Print-out rate.
Description of the drawings
Fig. 1, schematic structural view of the invention；
Fig. 2, structure cut-away view of the present invention；
Fig. 3, application state schematic diagram of the present invention；
At Fig. 4,21 edge protuberance of powder stoing trough of the present invention the line of peak and 2 inclined-plane upper end of powder separator and horizontal plane into
Angle, status diagram during α=45 °.
Wherein, 1 is powder box, and 2 be powder separator, and 3 be partition board, and 4 be scraper, and 5 be bottom plate, and 6 be working substrate, and 7 be forming storehouse,
8 be substrate elevating bar, and 9 be link stopper, and 10 be for powder case, and 11 be powder box front panel, and 12 be powder box rear panel, and 13 is on the left of powder boxes
Plate, 14 be cup, and 15 be rear chamber, and 16 be powder box right plate, and 21 be powder stoing trough, and 23 be shaft, and 24 be gear, and 25 be rack, 26
For push rod, 27 is beat push rod limited block, and 28 be spring, and 29 be inclined-plane.
Specific embodiment
This list scraper two-way powder laying device include powder box, partition board, scraper, powder separator, shaft, gear, rack, push rod,
Spring etc..Powder box is the structure of the upper and lower opening surrounded by front panel, rear panel, left plate, right plate, and there are one powder box inside
Space in powder box is divided into cup and rear chamber by partition board, and partition board both sides are fixed on the side plate of left and right powder box.It is filled below partition board
There is scraper.Powder separator can rotate, shaft is fixed on powder box left and right side plate above partition board along the shaft parallel with partition board.Turn
Gear is housed on axis.Push rod one end is equipped with rack, and with engaged gears, the other end is pierced by powder box front panel.Spring is housed on push rod,
Push rod is released forward.There are one inclined-plane on powder separator, inclined plane method is mutually directed toward front upper place, and there is protrusion in inclined-plane lower end, forms one
Powder stoing trough.High spot peak and the line and the so-called angle of horizontal plane of inclined-plane upper end are 45 °~50 °.
When in use, this power spreading device is mounted on bottom plate, on the bottom plate in front of power spreading device there are one trepanning,
It is surrounded below trepanning bottom plate equipped with four sides, transparent forming storehouse, shaping has forming board in storehouse, pass through below forming board
Elevating lever is connect with transmission system, can be moved up and down in forming storehouse.The top of power spreading device is equipped with for powder case, in powder case
Powder dropped on powder separator by the meal outlet of bottom, for the quantity of each powder falling of powder case internal control.
Before powdering work, powder is supplied into powder box in a manner of powder falling above powder separator, the powder fallen first fills up a point powder
The powder stoing trough of device continues the powder fallen into and overflows the cup that powder stoing trough falls into powder box.Power spreading device transmission system drive under to
Preceding movement, scraper skim over forming board, indoor powder powdering on forming board before promotion.Power spreading device reaches forming board
The other end after, the push rod for stretching out power spreading device front panel bumps against link stopper, and the rack on push rod pushes the gear in shaft to drive
Powder separator rotates, and the powder in powder stoing trough is poured into the rear chamber of powder box.When power spreading device returns to home position, scraper will push
Indoor powder powdering on the forming surface afterwards realizes two-way powder laying thereby using same scraper.
This list scraper two-way powder laying device include powder box, partition board, scraper, powder separator, shaft, gear, rack, push rod,
Spring, push rod limiting etc..Powder box is the structure of the upper and lower opening surrounded by front panel, rear panel, left plate, right plate, powder box
Internal there are one partition boards, the space in powder box are divided into cup and rear chamber, partition board both sides are fixed on left and right side plate.Under partition board
Side is equipped with scraper.Powder separator can rotate, shaft is fixed on powder box left and right side plate above partition board along the shaft parallel with partition board
On.Shaft side is equipped with gear.Push rod one end is equipped with rack, and with engaged gears, the other end is pierced by powder box front panel.It is filled on push rod
There is spring, push rod is released forward.It is limited on push rod equipped with push rod, it is determined that push rod is to the extrapolated maximum position of powder box.Point
There are one inclined-plane on powder device, inclined plane method is mutually directed toward front upper place, and there is protrusion in inclined-plane lower end, forms a powder stoing trough.When push rod is in
When being pushed outwardly maximum position, the gear in rack drives powder separator shaft on push rod makes powder separator turn to one surely
Positioning is put, and peak and the line of powder separator inclined-plane upper end are with horizontal plane angulation at powder stoing trough edge protuberance at this time
45 °~50 °.
When in use, this power spreading device is mounted on bottom plate, on the bottom plate in front of power spreading device there are one trepanning,
It is surrounded below trepanning bottom plate equipped with four sides, transparent forming storehouse, shaping has forming board in storehouse, pass through below forming board
Elevating lever is connect with transmission system, can be moved up and down in forming storehouse.The top of power spreading device is equipped with for powder case, in powder case
Powder dropped on powder separator by the meal outlet of bottom, for the quantity of each powder falling of powder case internal control.
Before powdering work, powder is supplied into powder box in a manner of powder falling above powder separator, the powder fallen first fills up a point powder
The powder stoing trough of device continues the powder fallen into and overflows the cup that powder stoing trough falls into powder box.Power spreading device transmission system drive under to
Preceding movement, scraper skim over forming board, indoor powder powdering on forming board before promotion.Power spreading device reaches forming board
The other end after, the push rod for stretching out power spreading device front panel bumps against link stopper, and the rack on push rod pushes the gear in shaft to drive
Powder separator rotates, and the powder in powder stoing trough is poured into the rear chamber of powder box.When power spreading device returns to home position, scraper will push
Indoor powder powdering on the forming surface afterwards realizes two-way powder laying thereby using same scraper.
A kind of list scraper two-way powder laying device, including powder box, partition board, scraper, powder separator, push rod etc..Have one inside powder box
Space in powder box is divided into cup and rear chamber by a partition board, equipped with scraper below partition board, powder separator above partition board, can along with
The parallel shaft rotation of partition board.Push rod one end is flexibly connected with powder separator, pushes powder separator rotation.There is powder stoing trough on powder separator.
When powder separator does not rotate, the powder part for falling into powder box is temporarily stored in the powder stoing trough of powder separator, remaining is fallen by powder separator guiding
Enter cup, after push rod pushes powder separator rotation, the powder in powder stoing trough is introduced into rear chamber.
A kind of list scraper two-way powder laying device, including powder box, partition board, scraper, powder separator, shaft, push rod etc., feature exists
In there is powder stoing trough on the inclined-plane on the powder separator, the folder of line and horizontal plane on powder stoing trough edge and inclined-plane between peak
Angle α=45 °~50 °.
It is characterized in that, powder separator rotates under the promotion of push rod, rotational angle is not less than 2 α.
It is characterized in that, there is partition board in powder box, powder box is divided into two spaces by partition board bottom installation scraper, partition board.
Claims (2)
1. a kind of list scraper two-way powder laying device, including powder box (1) and powder separator (2), powder box (1) is by powder box left plate
(13), the structure of upper and lower opening that powder box right plate (16), powder box rear panel (12) and powder box front panel (11) surround, powder box
(1) powder separator (2) is installed in, which is characterized in that internal there are one partition board (3) in powder box (1), partition board (3) will be in powder box (1)
Space be divided into cup (14) and rear chamber (15), partition board (3) both sides are fixed on powder box left plate (13) and powder box right plate (16)
On；Partition board (3) lower edge is equipped with scraper (4)；Powder separator (2) can turn above partition board along the shaft (23) parallel with partition board
Dynamic, shaft (23) both ends are fixed on powder box left plate (13) and powder box right plate (16)；Shaft on the right of powder separator (2)
(23) rack (25) is housed equipped with gear (24), push rod (26) one end on, rack (25) is engaged with gear (24), and the other end is pierced by
Powder box front panel (11)；Equipped with spring (28) on push rod (26), push rod (26) is released forward；It is limited on push rod (26) equipped with push rod
Position block (27), it is determined that push rod (26) is to the extrapolated maximum position of powder box (1)；There are inclined-plane (29), inclined-plane on powder separator (2)
(29) method is mutually directed toward front upper place, and there is protrusion in inclined-plane (29) lower end, forms a powder stoing trough (21)；It is pushed out when push rod (26) is in
When going out to maximum position, the rack (25) on push rod (26) drives the gear (24) in powder separator (2) shaft (23), makes powder separator
(2) settling position is turned to, the angle of the line on powder stoing trough edge and inclined-plane between peak and horizontal plane is at this time
α, α=45 °~50 °.
2. a kind of single scraper two-way powder laying device according to claim 1, which is characterized in that (2 are pushing away the powder separator
It is rotated under the promotion of bar, rotational angle is not less than 2 α.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711299369.7A CN108145968A (en) | 2017-12-08 | 2017-12-08 | A kind of list scraper two-way powder laying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711299369.7A CN108145968A (en) | 2017-12-08 | 2017-12-08 | A kind of list scraper two-way powder laying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108145968A true CN108145968A (en) | 2018-06-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711299369.7A Pending CN108145968A (en) | 2017-12-08 | 2017-12-08 | A kind of list scraper two-way powder laying device |
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| CN (1) | CN108145968A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109732085A (en) * | 2018-12-13 | 2019-05-10 | 上海航天设备制造总厂有限公司 | A kind of double scraper mixing power spreading devices and application method for 3D printing |
| CN110406157A (en) * | 2019-09-04 | 2019-11-05 | 石家庄百特工具有限公司 | Powder spreading device and chilling press |
| CN111702178A (en) * | 2020-07-29 | 2020-09-25 | 天津清研智束科技有限公司 | Powder paving device and additive manufacturing device |
| CN111702180A (en) * | 2020-05-08 | 2020-09-25 | 大族激光科技产业集团股份有限公司 | Device for realizing self-adaptive powder feeding and flexible and controllable powder quantity |
| CN111940728A (en) * | 2019-05-17 | 2020-11-17 | 天津斯沃姆科技发展有限公司 | Additive manufacturing laser forming equipment and method |
| CN117680715A (en) * | 2024-01-31 | 2024-03-12 | 西安空天机电智能制造有限公司 | Laser selective melting single-scraper bidirectional powder spreading device, method and additive manufacturing equipment |
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| CN105921748A (en) * | 2016-07-01 | 2016-09-07 | 西安铂力特激光成形技术有限公司 | Selective laser melting single-knife two-way powder laying device and selective laser melting equipment |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109732085A (en) * | 2018-12-13 | 2019-05-10 | 上海航天设备制造总厂有限公司 | A kind of double scraper mixing power spreading devices and application method for 3D printing |
| CN109732085B (en) * | 2018-12-13 | 2021-05-18 | 上海航天设备制造总厂有限公司 | Double-scraper mixed powder spreading device for 3D printing and using method |
| CN111940728A (en) * | 2019-05-17 | 2020-11-17 | 天津斯沃姆科技发展有限公司 | Additive manufacturing laser forming equipment and method |
| CN111940728B (en) * | 2019-05-17 | 2023-08-25 | 天津斯沃姆科技发展有限公司 | Laser forming equipment and method for additive manufacturing |
| CN110406157A (en) * | 2019-09-04 | 2019-11-05 | 石家庄百特工具有限公司 | Powder spreading device and chilling press |
| CN111702180A (en) * | 2020-05-08 | 2020-09-25 | 大族激光科技产业集团股份有限公司 | Device for realizing self-adaptive powder feeding and flexible and controllable powder quantity |
| CN111702178A (en) * | 2020-07-29 | 2020-09-25 | 天津清研智束科技有限公司 | Powder paving device and additive manufacturing device |
| CN117680715A (en) * | 2024-01-31 | 2024-03-12 | 西安空天机电智能制造有限公司 | Laser selective melting single-scraper bidirectional powder spreading device, method and additive manufacturing equipment |
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