CN105149577B - A kind of vacuum sealing formula 3D printing device - Google Patents
A kind of vacuum sealing formula 3D printing device Download PDFInfo
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- CN105149577B CN105149577B CN201510679301.6A CN201510679301A CN105149577B CN 105149577 B CN105149577 B CN 105149577B CN 201510679301 A CN201510679301 A CN 201510679301A CN 105149577 B CN105149577 B CN 105149577B
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- tiling
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- frame
- base plate
- printing
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Abstract
The invention discloses a kind of vacuum sealing formula 3D printing device, including frame body and tiling dust feeder, the frame body is fixedly arranged in the middle of transverse beam, powdering base plate is fixed with transverse beam, casing is fixed with powdering base plate, the top surface of casing has peep hole, the top surface of casing is fixed with quartz glass block, quartz glass block covers peep hole, air inlet pipe has been connected on the side wall of casing, air inlet pipe is communicated with the lateral through aperture having on the side wall of casing, and the edge bottom surface of powdering base plate has connected blast pipe, and the edge of powdering base plate has bottom through-hole;Tiling dust feeder is in casing;The tiling dust feeder includes tiling frame and storage powder groove, tiling frame is rectangular frame, scraper plate has been bolted to connection on the outer wall of side plate of left and right two of tiling frame, it may ensure that air will not enter in vacuum tank, so as to ensure the good product quality of the 3D printing carried out in vacuum tank, and the serrate slot using conveying roller is conveyed, its delivery precision is high.
Description
Technical field:
The present invention relates to 3D printing equipment technical field, more specifically to a kind of vacuum sealing formula 3D printing device.
Background technology:
In existing 3D printing equipment, its printing casing is usually a common casing, and powdering dress is set in casing
Put, powdering is carried out after pouring into powder in casing is carrying out 3D printing again, and its casing is communicated with outside air, thus
So that during laser printing, effect during printing can be influenceed due to the impurity in extraneous air, influence shaped article intensity and
Quality.
And in existing 3D printer, its powder is paved simply is rolled using rotating roller, roll-in its
It is intended merely to prevent powder raised, so as to be compacted,, in compacting, when some places of powder are excessively concentrated, being cannot for it
More flatten, it is limited that it flattens effect.
And existing powder feeding mechanism is typically rotated using screw rod and realizes conveying, and because nano level powder is easily defeated
Pipe internal bond, influence conveying are sent, and easily influences delivery precision.
The content of the invention:
The purpose of the present invention is to overcome the deficiencies in the prior art, there is provided a kind of vacuum sealing formula 3D printing device, and it can be with
Ensure that air will not enter in vacuum tank, so that the good product quality of the 3D printing carried out in ensureing vacuum tank, intensity is high, impurity
It is few, and it realizes the transverse shifting of tiling frame using electric cylinder, and its movement stabilization, speed is steady, high precision, and using defeated
The serrate slot of roller is sent to convey, its delivery precision is high, and it can first be struck off to powder and be carried out repoussage again, finally be led to again
Tiling roller compaction is crossed, it can realize that way moving tiles, and tiling effects are good.
The scheme that the present invention solves the technical problem is:
A kind of vacuum sealing formula 3D printing device, including frame body and tiling dust feeder, in the frame body
Portion is fixed with transverse beam, and powdering base plate is fixed with transverse beam, and casing is fixed with powdering base plate, and the top surface of casing has observation
Hole, the top surface of casing is fixed with quartz glass block, and quartz glass block covering peep hole has connected air inlet pipe on the side wall of casing,
Air inlet pipe is communicated with the lateral through aperture having on the side wall of casing, and the edge bottom surface of powdering base plate has connected blast pipe, powdering bottom
The edge of plate has bottom through-hole, and bottom through-hole is communicated with blast pipe, and angle valve is respectively and fixedly provided with blast pipe and air inlet pipe;Tiling is sent
Powder device is in casing;
The tiling dust feeder includes tiling frame and storage powder groove, and tiling frame is rectangular frame, the left and right two of the frame that tiles
Scraper plate is bolted to connection on the outer wall of side plate, there is curved wall on the lateral wall of the bottom surface of described two scraper plates
Portion, the bottom surface middle part of scraper plate has elongate recesses;Tiling roller is provided with the middle part of the tiling frame, the two ends of the roller that tiles are hinged on flat
Spread on the front and rear side plate of frame, storage powder groove is fixed on the top of the front and rear side plate of tiling frame, and conveying roller, conveying roller are provided with storage powder groove
Outer wall on be evenly equipped with external tooth, between external tooth have serrate slot, store up powder groove the bottom left and right sides be inside bending oblique folding
Plate, has blanking elongated slot between two oblique folded plates, blanking elongated slot is above tiling roller;The anterior left and right two of the powdering base plate
Side is fixed with connecting seat, and the two ends of slide bar are fixed on two connecting seats, and the rear portion of powdering base plate is fixed with electric cylinder, and tile frame
Front side board outer wall on be fixed with sliding block, in slide bar, the outer wall of back side panel of the frame that tiles is fixed on electric cylinder to sliding block sleeve
Movable block on;
Powder feeding servomotor, the output shaft band of powder feeding servomotor are fixed with the front side board or back side panel of the tiling frame
Dynamic conveying roller is rotated;
Rotary shaft is hinged with former and later two side plates of tiling frame between the storage powder groove and tiling roller, it is solid in rotary shaft
Surely there is guide plate, guide plate is fixed with guide motor, is oriented on the surface of tiling roller, the front side board or back side panel of the frame that tiles
The output shaft of motor drives rotary shaft to rotate;
The middle part that the middle part of the powdering base plate has elongate recesses, elongate recesses has raised circle and blowing through hole, puts
In the middle part of projection circle, the bottom surface of powdering base plate is fixed with protection sleeve and inner sleeve to material through hole, and inner sleeve is interior in sleeve is protected
The side wall of sleeve has sliding groove, and linear electric motors are fixed with the madial wall for protecting sleeve, fixed on the movable block of linear electric motors
There is promotion contiguous block, promote and promotion connecting pole is fixed with contiguous block, promote the top surface of connecting pole to be fixed with printing supporting plate, beat
Heating tube is provided with inside print supporting plate, in blowing through hole, the lateral wall for printing supporting plate is nested with bullet to printing supporting plate sleeve
Property sealing ring, elastic seal ring elasticity is pressed against on the side wall of blowing through hole.
The two ends that the middle part of the frame body has tie-beam, two transverse beams are separately fixed on two tie-beams,
Powdering base plate has two connection elongate recesses, and transverse beam is nested in corresponding connection elongate recesses and is weldingly fixed on connection
In elongate recesses.
The printing supporting plate includes printing base plate and printing top board, and the bottom surface for printing top board is fixed with multiple heating tubes,
Printing base plate is fixed on the bottom surface of printing top board.
The bottom outside wall of the casing has extension flanging, and the bottom surface for extending flanging is nested with primary seal circle, primary seal
Circle is clamped between extension flanging and powdering base plate.
The middle part of the guide plate has axial pass trough, and rotary shaft sleeve is in axial pass trough and is fixed on axially logical
On the madial wall of groove.
Lower section both sides external tooth on the conveying roller is mutually leaned on corresponding oblique folded plate.
The bottom surface of the bottom surface higher than scraper plate of the tiling frame.
The end that one end of the tiling roller has spline axis hole, the output shaft of powder feeding servomotor has spline shaft,
Spline shaft sleeve is in spline axis hole.
One end of the rotary shaft has a spline axle hole, the splined shaft connecting portion sleeve that the output shaft of guide motor has
In corresponding spline axis hole.
Linear bearing is fixed with the madial wall of the inserted link of the sliding block, slide bar sleeve is in linear bearing;The connection
The middle part of seat has connection axially extending bore, and connecting the side of axially extending bore has fluting, and the top sleeve of fixing bolt is in fluting
Top, the bottom of fixing bolt passes through the bottom surface for slotting and being screwed onto fluting, the end sleeve of slide bar and holding is in connecting shaft
To in through hole.
Prominent effect of the invention is:
Compared with prior art, it may ensure that air will not enter in vacuum tank, and protection gas is full of in vacuum tank,
So as to ensure the good product quality of the 3D printing carried out in vacuum tank, intensity is high, and impurity is few, and it realizes putting down using electric cylinder
The transverse shifting of frame is spread, its movement stabilization, speed is steady, high precision, and use the serrate slot of conveying roller to convey, its conveying essence
Degree is high, and it can first be struck off to powder and carry out repoussage again, and finally again by the roller compaction that tiles, it can realize double
Tiled to mobile, tiling effects are good.
Brief description of the drawings:
Fig. 1 is dimensional structure diagram of the invention;
Fig. 2 is the partial sectional view of vacuum tank of the invention;
Fig. 3 is the dimensional structure diagram of tiling dust feeder of the invention;
Fig. 4 is the partial enlarged drawing of Fig. 2;
Fig. 5 is the partial sectional view of Fig. 3;
Fig. 6 is the partial left side view of Fig. 3.
Specific embodiment:
Embodiment, is shown in as shown in Figures 1 to 6, and a kind of vacuum sealing formula 3D printing device, including frame body 50 and tiling are sent
Powder device, the frame body 50 is fixedly arranged in the middle of transverse beam 51, is fixed with powdering base plate 100, powdering bottom in transverse beam 51
Casing 60 is fixed with plate 100, the top surface that the top surface of casing 60 has peep hole 61, casing 60 is fixed with quartz glass block 62,
Quartz glass block 62 covers peep hole 61, and the side wall of air inlet pipe 63, air inlet pipe 63 and casing 60 has been connected on the side wall of casing 60
On the lateral through aperture 64 that has communicate, the edge bottom surface of powdering base plate 100 has connected blast pipe 65, the edge of powdering base plate 100
With bottom through-hole 66, bottom through-hole 66 is communicated with blast pipe 65, and angle valve 67 is respectively and fixedly provided with blast pipe 65 and air inlet pipe 63;It is flat
Paving dust feeder is in casing 60;
The tiling dust feeder includes tiling frame 20 and storage powder groove 30, and tiling frame 20 is rectangular frame, tiling frame 20
Scraper plate 10 is bolted to connection on two outer walls of side plate in left and right, has been had on the lateral wall of the bottom surface of described two scraper plates 10
The bottom surface middle part for having arcwall face 11, scraper plate 10 has elongate recesses 12;The middle part of the tiling frame 20 is provided with tiling roller 21,
The two ends of tiling roller 21 are hinged on the front and rear side plate of tiling frame 20, and storage powder groove 30 is fixed on the upper of the front and rear side plate of tiling frame 20
Portion, conveying roller 31 is provided with storage powder groove 30, and external tooth is evenly equipped with the outer wall of conveying roller 31, has serrate slot 32, storage between external tooth
The bottom left and right sides of powder groove 30 is the oblique folded plate 33 of inside bending, has blanking elongated slot 34 between two oblique folded plates 33,
Blanking elongated slot 34 is in the top of tiling roller 21;The anterior left and right sides of the powdering base plate 100 is fixed with connecting seat 103, slide bar 102
Two ends be fixed on two connecting seats 103, the rear portion of powdering base plate 100 is fixed with electric cylinder 104, the front side board of the frame 20 that tiles
Outer wall on be fixed with sliding block 105, the sleeve of sliding block 105 in slide bar 102, tile frame 20 back side panel outer wall be fixed on it is electronic
On the movable block of cylinder 104;
Be fixed with powder feeding servomotor 22 on the front side board or back side panel of the tiling frame 20, powder feeding servomotor 22 it is defeated
Shaft drives conveying roller 31 to rotate;
Rotary shaft 23 is hinged with former and later two side plates of tiling frame 20 between the storage powder groove 30 and tiling roller 21, is turned
Guide plate 24 is fixed with moving axis 23, guide plate 24 is on the surface of tiling roller 20, the front side board or back side panel of the frame 20 that tiles
Guide motor 25 is fixed with, the output shaft of guide motor 25 drives rotary shaft 23 to rotate;
The middle part that the middle part of the powdering base plate 100 has elongate recesses 107, elongate recesses 107 has raised circle 1071
With blowing through hole 1072, at the middle part of projection circle 1071, the bottom surface of powdering base plate 100 is fixed with protects sleeve 70 to blowing through hole 1072
With inner sleeve 71, in sleeve 70 is protected, the side wall of inner sleeve 71 has sliding groove 72 to inner sleeve 71, protects the inner side of sleeve 70
Linear electric motors 73 are fixed with wall, promotion contiguous block 74 is fixed with the movable block of linear electric motors 73, promote solid on contiguous block 74
Surely there is promotion connecting pole 75, promote the top surface of connecting pole 75 to be fixed with printing supporting plate 76, be provided with inside printing supporting plate 76 and added
Heat pipe 77, in blowing through hole 1072, the lateral wall for printing supporting plate 76 is nested with elastic seal ring to the printing sleeve of supporting plate 76
78, the elasticity of elastic seal ring 78 is pressed against on the side wall of blowing through hole 1072.
Further, the middle part of the frame body 50 has tie-beam 52, and two two ends of transverse beam 51 are solid respectively
It is scheduled on two tie-beams 52, powdering base plate 100 has two connection elongate recesses 53, transverse beam 51 is nested in corresponding connection
In elongate recesses 53 and be weldingly fixed on connection elongate recesses 53 in.
Further, the printing supporting plate 76 includes printing base plate 761 and printing top board 762, printing top board 762
Bottom surface is fixed with multiple heating tubes 77, and printing base plate 761 is fixed on the bottom surface of printing top board 762.
Further, the bottom outside wall of the casing 60 has extension flanging 68, and the bottom surface for extending flanging 68 is nested
There is primary seal circle 69, primary seal circle 69 is clamped between extension flanging 68 and powdering base plate 100.
Further, the middle part of the guide plate 24 has axial pass trough 241, and the sleeve of rotary shaft 23 is axially logical
In groove 241 and it is fixed on the madial wall of axial pass trough 241.
Further, the lower section both sides external tooth on the conveying roller 31 is mutually leaned on corresponding oblique folded plate 33.
Further, the bottom surface of the bottom surface higher than scraper plate 10 of the tiling frame 20.
Further, one end of the tiling roller 21 has spline axis hole, the end of the output shaft of powder feeding servomotor 22
Portion has spline shaft, and spline shaft sleeve is in spline axis hole.
Further, one end of the rotary shaft 23 has a spline axle hole, what the output shaft of guide motor 25 had
Splined shaft connecting portion sleeve is in corresponding spline axis hole.
Further, linear bearing 1051, the sleeve of slide bar 102 are fixed with the madial wall of the inserted link of the sliding block 105
In linear bearing 1051;The middle part of the connecting seat 103 has connection axially extending bore 1011, the one of connection axially extending bore 1011
Side has fluting 1012, and on the top of fluting 1012, the bottom of fixing bolt passes through fluting 1012 to the top sleeve of fixing bolt
And it is screwed onto the bottom surface of fluting 1012, the end sleeve of slide bar 102 and holding is in axially extending bore 1011 is connected.
When using, casing 60 is first opened, powder is put into storage powder groove 30, then fix casing 60, or in case
Door body is set on the side wall of body 60, realizes placing by opening door body, by the angle that protection gas air inlet pipe is connected air inlet pipe 63
Valve 67, blast pipe 65 connects main exhaust, and main exhaust connects vavuum pump and carries out vacuum suction, then, closes angle valve 67, then
The angle valve 67 connected in air inlet pipe 63 is opened so that protective gas enters in casing 60, so as to sky will not be subject to when ensureing processing
The influence of oxygen in gas.
And pass through powder feeding servomotor 22 and run, so as to drive conveying roller 31 to rotate, its rotate serrate slot 32 away from
From powder that will be in a serrate slot 32 drops downwards from blanking elongated slot 34, by the output shaft rotation band of guide motor 25
Dynamic rotary shaft 23 is rotated, so that guide plate 24 is inclined forwards so that powder drops in scraper plate 10 with guide plate 24
On the top surface of the printing supporting plate 76 in front, the bottom surface of scraper plate 10 and tiling roller 21 is equal with the top surface of projection circle 1071, then
Tiling frame 20 is driven to move by electric cylinder 104 so that scraper plate 10 is struck off along projection circle 1071, and it passes through arc first
Wall portion 11 is paved powder, and lug boss is carried out into extruding puts down, and the arcwall face 11 of scraper plate 10 is also further to subtract
Plane contact area below few and scraper plate, reduces abrasion, and the lug boss of powder is squeezed after putting down and carried out by the rear portion of scraper plate 10 again
Strike off, and again by the scraper plate at the rear portion of elongate recesses 12 after powder unnecessary in the powder that elongate recesses 12 will can strike off enters
10 bottom surfaces are tiled again, are then compacted by the roller 21 that tiles so that the real one layer of powder of top surface paving of printing supporting plate 76
End, then can be carried out 3D printing, and its printing effect is good.
And when the present embodiment traffic direction is opposite, certain angle is inverted by guide motor 25 so that 24 turns of guide plate
It is dynamic, so as to ensure that the powder for falling is in the front of the scraper plate 10 of moving direction side forever.Wherein only need to electric cylinder 104
Motor realize upset, will energizing signal be conveyed to control main frame, by control main frame control guide motor 25 realize reversion, its
Effect is good.
And pass through to ensure heating-up temperature when heating tube 77 can ensure that workpiece is printed on supporting plate 76 is printed.And lead to
The progressively decline that linear electric motors 73 realize printing supporting plate 75 is crossed, printing is realized.
And the bottom of frame body 50 is provided with roller and angle 200, angle 200 is the bottom for being screwed onto frame body 50
In portion, by producing angle 200, the present apparatus can be made not easily moveable on the ground, it is ensured that effect.
Finally, embodiment of above is merely to illustrate the present invention, and not limitation of the present invention, relevant technical field
Those of ordinary skill, without departing from the spirit and scope of the present invention, can also make a variety of changes and modification, therefore
All equivalent technical schemes fall within scope of the invention, and scope of patent protection of the invention should be defined by the claims.
Claims (10)
1. a kind of vacuum sealing formula 3D printing device, including frame body (50) and tiling dust feeder, it is characterised in that:It is described
Frame body (50) is fixedly arranged in the middle of transverse beam (51), and powdering base plate (100), powdering base plate are fixed with transverse beam (51)
(100) casing (60) is fixed with, the top surface that the top surface of casing (60) has peep hole (61), casing (60) is fixed with quartzy glass
Glass block (62), quartz glass block (62) covers peep hole (61), and air inlet pipe (63), air inlet pipe have been connected on the side wall of casing (60)
(63) communicated with the lateral through aperture (64) having on the side wall of casing (60), the edge bottom surface of powdering base plate (100) has connected row
Tracheae (65), the edge of powdering base plate (100) has bottom through-hole (66), and bottom through-hole (66) is communicated with blast pipe (65), row
Angle valve (67) is respectively and fixedly provided with tracheae (65) and air inlet pipe (63);Tiling dust feeder is in casing (60);
The tiling dust feeder includes tiling frame (20) and storage powder groove (30), and tiling frame (20) is rectangular frame, and tile frame
(20) scraper plate (10) has been bolted to connection on the outer wall of side plate of left and right two, the bottom surface of described two scraper plates (10)
The bottom surface middle part on lateral wall with arcwall face (11), scraper plate (10) has elongate recesses (12);Tiling frame (20)
Middle part be provided with tiling roller (21), tiling roller (21) two ends be hinged on tiling frame (20) front and rear side plate on, store up powder groove (30)
The top of the front and rear side plate of tiling frame (20) is fixed on, conveying roller (31), the outer wall of conveying roller (31) are provided with storage powder groove (30)
On be evenly equipped with external tooth, between external tooth have serrate slot (32), storage powder groove (30) the bottom left and right sides be the oblique of inside bending
Folded plate (33), has blanking elongated slot (34) between two oblique folded plates (33), blanking elongated slot (34) is in tiling roller (21) top;Institute
The anterior left and right sides for stating powdering base plate (100) is fixed with connecting seat (103), and the two ends of slide bar (102) are fixed on two connections
On seat (103), the rear portion of powdering base plate (100) is fixed with electric cylinder (104), solid on the outer wall of the front side board of tiling frame (20)
Surely there is sliding block (105), in slide bar (102), the outer wall of the back side panel of tiling frame (20) is fixed on electric cylinder to sliding block (105) sleeve
(104) on movable block;
Powder feeding servomotor (22) is fixed with the front side board or back side panel of tiling frame (20), powder feeding servomotor (22)
Output shaft drives conveying roller (31) to rotate;
Rotary shaft is hinged with former and later two side plates of tiling frame (20) between storage powder groove (30) and tiling roller (21)
(23) guide plate (24), is fixed with rotary shaft (23), in the surface of tiling roller (21), tile guide plate (24) frame (20)
Guide motor (25) is fixed with front side board or back side panel, the output shaft of guide motor (25) drives rotary shaft (23) to rotate;
The middle part that the middle part of the powdering base plate (100) has elongate recesses (107), elongate recesses (107) has raised circle
(1071) and blowing through hole (1072), blowing through hole (1072) at projection circle (1071) middle part, consolidate by the bottom surface of powdering base plate (100)
Surely there are protection sleeve (70) and inner sleeve (71), in protection sleeve (70), the side wall of inner sleeve (71) has inner sleeve (71)
Sliding groove (72), linear electric motors (73) are fixed with the madial wall of protection sleeve (70), solid on the movable block of linear electric motors (73)
Surely there is promotion contiguous block (74), promote and promotion connecting pole (75) is fixed with contiguous block (74), promote the top surface of connecting pole (75)
Printing supporting plate (76) is fixed with, heating tube (77) is provided with inside printing supporting plate (76), printing supporting plate (76) sleeve is being put
In material through hole (1072), the lateral wall of printing supporting plate (76) is nested with elastic seal ring (78), elastic seal ring (78) elasticity
It is pressed against on the side wall of blowing through hole (1072).
2. a kind of vacuum sealing formula 3D printing device according to claim 1, it is characterised in that:The frame body
(50) two ends that middle part has tie-beam (52), two transverse beams (51) are separately fixed on two tie-beams (52), powdering
With two connections elongate recesses (53), transverse beam (51) is nested in corresponding connection elongate recesses (53) simultaneously base plate (100)
It is weldingly fixed in connection elongate recesses (53).
3. a kind of vacuum sealing formula 3D printing device according to claim 2, it is characterised in that:The printing supporting plate
(76) including printing base plate (761) and printing top board (762), the bottom surface of printing top board (762) is fixed with multiple heating tubes (77),
Printing base plate (761) is fixed on the bottom surface of printing top board (762).
4. a kind of vacuum sealing formula 3D printing device according to claim 3, it is characterised in that:The bottom of the casing (60)
Portion's lateral wall has extension flanging (68), and the bottom surface for extending flanging (68) is nested with primary seal circle (69), primary seal circle (69) folder
Hold and extending between flanging (68) and powdering base plate (100).
5. a kind of vacuum sealing formula 3D printing device according to claim 1, it is characterised in that:The guide plate (24)
Middle part has an axial pass trough (241), and rotary shaft (23) sleeve is in axial pass trough (241) and is fixed on axial pass trough (241)
On madial wall.
6. a kind of vacuum sealing formula 3D printing device according to claim 5, it is characterised in that:On the conveying roller (31)
Lower section both sides external tooth mutually leaned on corresponding oblique folded plate (33).
7. a kind of vacuum sealing formula 3D printing device according to claim 6, it is characterised in that:Tiling frame (20)
Bottom surface of the bottom surface higher than scraper plate (10).
8. a kind of vacuum sealing formula 3D printing device according to claim 7, it is characterised in that:Tiling roller (21)
One end end with spline axis hole, the output shaft of powder feeding servomotor (22) there is spline shaft, spline shaft sleeve exists
In spline axis hole.
9. a kind of vacuum sealing formula 3D printing device according to claim 8, it is characterised in that:The rotary shaft (23)
One end has a spline axle hole, and the splined shaft connecting portion sleeve that the output shaft of guide motor (25) has is in corresponding spline axis hole
In.
10. a kind of vacuum sealing formula 3D printing device according to claim 1, it is characterised in that:The sliding block (105)
Linear bearing (1051) is fixed with the madial wall of inserted link, slide bar (102) sleeve is in linear bearing (1051);The connecting seat
(103) side that middle part has connection axially extending bore (1011), connection axially extending bore (1011) has fluting (1012), fixed
The top sleeve of bolt passes through fluting (1012) and is screwed onto fluting in the top of fluting (1012), the bottom of fixing bolt
(1012) bottom surface, the end sleeve of slide bar (102) and holding are in connection axially extending bore (1011).
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CN105965013B (en) * | 2016-05-17 | 2017-11-28 | 南昌大学 | A kind of multicomponent for metal 3D printing controls accurate powder feed system in real time |
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CN105903966B (en) * | 2016-06-28 | 2019-01-29 | 华南理工大学 | A kind of built-in automatic coating device and method based on noble metal 3D printing |
CN106001567B (en) * | 2016-07-06 | 2020-01-03 | 中北大学 | Laser rapid prototyping supplies powder device in succession |
CN109551759B (en) * | 2017-09-27 | 2021-08-31 | 大族激光科技产业集团股份有限公司 | Additive manufacturing powder dropping device and method |
CN114103118B (en) * | 2021-11-30 | 2023-05-23 | 浙江机电职业技术学院 | Consumable pretreatment device for 3D printer |
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