CN110181053A - A kind of powder feeding and spreading device for SLM type metal 3D printer - Google Patents
A kind of powder feeding and spreading device for SLM type metal 3D printer Download PDFInfo
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- CN110181053A CN110181053A CN201910584795.8A CN201910584795A CN110181053A CN 110181053 A CN110181053 A CN 110181053A CN 201910584795 A CN201910584795 A CN 201910584795A CN 110181053 A CN110181053 A CN 110181053A
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- powder feeding
- plate
- powder
- powdering
- cantilever
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/22—Driving means
- B22F12/222—Driving means for motion along a direction orthogonal to the plane of a layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/20—Direct sintering or melting
- B22F10/28—Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/30—Process control
- B22F10/37—Process control of powder bed aspects, e.g. density
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/22—Driving means
- B22F12/224—Driving means for motion along a direction within the plane of a layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- 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
- B22F12/67—Blades
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention discloses a kind of powder feeding and spreading devices of SLM type metal 3D printer, including powder feeding module and powdering module；The powder feeding module includes bracket, powder feeding cylinder and powder feeding driving mechanism；Powder feeding chamber is provided in the powder feeding cylinder；The powder feeding driving mechanism includes piston piece and vertical driving mechanism；The powdering module includes powder supply mechanism and powdering drive mechanism；The upper end of the powder feeding cylinder is connect with the bottom plate of the molding room, and the powder feeding cylinder constitutes the moulding cylinder；The powder supply mechanism includes cantilever, scraper plate and scraping blade；The bottom of the scraping blade is the steel disc item of dense arrangement；The powder supply mechanism further includes the first adjusting machine dog and the second regulating mechanism.The powder feeding and spreading device can not only complete powder feeding and powdering work; and powdering can also be carried out to some second-rate metal powders during powdering; and it can prevent the impurity in scraper plate and metal powder from hard collision occurs during powdering, to protect the scraper plate.
Description
Technical field
The present invention relates to a kind of printer, specially a kind of powder feeding and spreading device for SLM type metal 3D printer.
Background technique
3D printing technique is a kind of technology for material being successively accumulated in together manufacture entity component, relative to traditional material
Expect removal technology, does not need cutter and mold, without carrying out multiple working procedure processing, it is with short production cycle, can easily process knot
The part of structure complexity.
Present 3D printing technique can substantially be divided into SLS (selective laser sintering), SLM (selective laser thawing), FDM
(fused glass pellet), SLA (stereolithography apparatus), EBM (electron beam injection molding).
SLM technology makes its fast melt using the laser beam irradiation metal powder of high-energy and cooled and solidified forms, it can
Directly to produce metal parts, compactness close to 100% using single metal or mixed metal powder, the part processed is smart
Degree is high, and mechanical property is good, and SLM technology, which has in fields such as automobile, aerospace, medical treatment, military projects, to be widely applied.
Powder feeding module and powdering module are the key components of SLM type metal 3D printer, and powder feeding module acts on
In sending metal powder into the moulding cylinder of molding room, and the effect of powdering module is then the metal powder sent up in powder feeding cylinder
End is routed to the position of moulding cylinder, and extra powder is pulled to the recycling of powder leakage slot.Powdering module directly affects the uniform of powdering
Property, so that print quality is influenced, if powdering module breaks down, it will influence whole printing process, or even cause the tight of equipment
It damages again.
Existing powder feeding and spreading module, such as the utility model patent that Authorization Notice No. is CN206997776U disclose
" a kind of SLM type 3D printer powder feeding and spreading module ", the structure of the SLM type 3D printer powder feeding and spreading module is simple, operation
It is convenient, due to joined spring in sleeve, good buffer function is played, powder feeding frame is smoothly transported on the slide rail
It goes, the diaphragm plate in powder feeding funnel has reticular structure, can disperse added metal powder well, prevent it from excessively accumulating, scrape
Plate and roll shaft slidably reciprocating and rolling, so that metal powder is more smooth, powdering effect is more preferable, improves the quality of printing.
However above-mentioned SLM type 3D printer powder feeding and spreading module is during the work time, since some parts want precision
Ask relatively low, when printing will use some second-rate metal powders, and the purity of these metal powders is not high, containing big and hard
Impurity particle, in powder process of deployment, scraper plate be easy with impurity occur hardness hit, first is that will cause powdering layer have it is recessed
Hole, gully, seriously affect powdering quality, second is that can damage to scraper plate.It is therefore desirable to invent a kind of novel powdering mould
Block, being capable of the poor metal powder of laying quality.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of sending for SLM type metal 3D printer
Powder power spreading device, the powder feeding and spreading device can not only complete powder feeding and powdering work, but also can be with during powdering
Powderings are carried out to some second-rate metal powders, and can prevent during powdering scraper plate with it is miscellaneous in metal powder
Hard collision occurs for matter, to protect the scraper plate.
The technical solution that the present invention solves above-mentioned technical problem is:
A kind of powder feeding and spreading device of SLM type metal 3D printer, including powder feeding module and setting are in powder feeding module upper end
Powdering module, wherein
The powder feeding module includes bracket, the powder feeding cylinder being arranged on bracket and for by the metal powder in powder feeding cylinder
The powder feeding driving mechanism being transported in moulding cylinder, wherein the powder feeding chamber for conveying metal powder is provided in the powder feeding cylinder；
The powder feeding driving mechanism includes with the piston piece of powder feeding chamber cooperation and for driving the piston piece to do vertical motion
Vertical driving mechanism；
The powdering module includes the powder supply mechanism being arranged on the bottom plate of molding room and for driving powder supply mechanism to transport
It moves so that metal powder to be laid on to the powdering drive mechanism in the moulding cylinder of molding room, wherein the upper end of the powder feeding cylinder and institute
The bottom plate connection of molding room is stated, the powder feeding cylinder constitutes the moulding cylinder；The powder supply mechanism includes cantilever, setting described outstanding
Scraper plate and scraping blade on arm, wherein the scraper plate and scraping blade are set side by side, and the scraper plate is parallel with the length direction of scraping blade；
The bottom of the scraping blade is the steel disc item of dense arrangement；The powder supply mechanism further includes for adjusting the height of the scraper plate
One adjusts the second regulating mechanism of machine dog and the height for adjusting the scraping blade.
Preferably, the piston piece includes piston head, the piston cylinder that the piston head lower end is arranged in and is arranged in institute
State the pedestal of piston cylinder lower end, wherein the powder feeding chamber of the piston head and the powder feeding cylinder cooperates, the piston head include substrate,
Upper cover plate, intermediate plate and lower cover plate, wherein the substrate, upper cover plate, intermediate plate and lower cover plate are set gradually straight down, institute
Substrate is stated to be mounted on the upper cover plate；Wool felt gasket is respectively arranged between the intermediate plate and upper cover plate and lower cover plate；
The lower cover plate is fixed by screws on the intermediate plate, and the upper cover plate and intermediate plate are mounted on the piston by screw
On cylinder.
Preferably, the vertical driving mechanism include the vertical driving motor being arranged on bracket, bearing fixed seat and
Lead screw transmission mechanism, wherein the bearing fixed seat setting on the bracket, and is located at the underface of the piston piece；Institute
Stating lead screw transmission mechanism includes screw rod and the feed screw nut with screw rod cooperation, wherein the screw rod is vertically arranged, the silk
One end of bar is extend into the piston cylinder, and the other end is passed down through the bearing fixed seat, the bearing fixed seat with institute
The position for stating screw rod contact is provided with bearing；The feed screw nut is mounted on the base；The master of the vertical driving motor
Synchronous drive mechanism is additionally provided between axis and the screw rod, the synchronous drive mechanism is synchronous belt drive mechanism or gear
Transmission mechanism or chain-drive mechanism.
Preferably, the powder feeding cylinder is provided with seal assembly, the seal assembly in the position contacted with the piston cylinder
It is mounted on the bottom of powder feeding cylinder, including mounting disc and the pilot sleeves of mounting disc or more two sides is set, wherein the installation
Disk is fixed on the lower end of the powder feeding cylinder by attachment screw；The pilot sleeve is fixed by screws in the mounting disc,
The pilot sleeve is provided with U-shaped sealing ring, the internal diameter of the U-shaped sealing ring and institute at the position contacted with the mounting disc
The internal diameter for stating pilot sleeve is equal, and the mounting disc is provided with confined planes in the corresponding position with the U-shaped sealing ring.
Preferably, first regulating mechanism includes the first adjustable plate, and the scraper plate is mounted on the first adjustable plate, described
It is connected by screw between first adjustable plate and the cantilever；First is additionally provided between first adjustable plate and the cantilever
Vertical guiding mechanism and the first spring, wherein the first vertical guiding mechanism includes being arranged on first adjustable plate
First guide post and the first pilot hole with first guide post cooperation being arranged on the cantilever；First spring is arranged
On first guide post, the both ends of first spring are respectively acting on first adjustable plate and the cantilever；Described
Two regulating mechanisms include the second adjustable plate, and the scraping blade is mounted on the second adjustable plate, second adjustable plate and the cantilever
Between be connected by screw to；The second vertical guiding mechanism and the second bullet are additionally provided between second adjustable plate and the cantilever
Spring, wherein the second vertical guiding mechanism includes the second guide post being arranged on second adjustable plate and is arranged in institute
State the second pilot hole with second guide post cooperation on cantilever；The second spring is set on second guide post, should
The both ends of second spring are respectively acting on second adjustable plate and the cantilever.
Preferably, the powdering module further includes the demarcation plate being arranged in molding room, and the demarcation plate is by the molding
Room is divided into the first installation space and the second installation space, wherein the first installation space is used to install the powdering drive mechanism,
Second installation space is used for the 3D printing of part；The groove passed through for cantilever, the groove edge are provided on the demarcation plate
The length direction horizontal extension of the demarcation plate；Demarcation plate production when being provided on the groove for preventing 3D printing
Raw black smoke passes through the partition that groove enters the first installation space；The partition includes being arranged on the groove
Guide rail, be arranged in the guide rail with the guide rail cooperation cloth and for driving the cloth along the length of guide rail
The transversal driving mechanism that direction is moved synchronously with the cantilever, wherein the guide rail extends along the length direction of the groove；
The cloth is provided with the notch with cantilever cooperation in the position with the cantilever contacts；The transversal driving mechanism promotes institute
It states cloth and the cantilever moves synchronously and blocks the groove always.
Preferably, the transversal driving mechanism includes that being located at first installation space on the demarcation plate is arranged in
The first reel, the second reel and the winding for driving first reel and the second reel to rotate synchronously pass
Motivation structure, wherein first reel is located at the left side of the groove, and is rotatably connected on described point by the first Scroll
On partition；Second reel is located at the right side of the groove, and is rotatably connected on the demarcation plate by the second Scroll
On；Wherein, first Scroll and the second Scroll are vertically arranged；The both ends of the cloth are looped around described first respectively and receive
On reel and the second reel.
Preferably, the powdering drive mechanism includes motor fixing seat, the driving motor being arranged in motor fixing seat, passes
Moving axis and synchronous belt drive mechanism, wherein the motor fixing seat is mounted on the bottom plate of the molding room, the driving electricity
Machine is mounted vertically in the motor fixing seat, is connected between the main shaft of the driving motor and the transmission shaft by shaft coupling；
The upper and lower ends of the transmission shaft are rotatably connected in the motor fixing seat by bearing；The synchronous belt drive mechanism includes
Active synchronization wheel, driven synchronizing wheel and synchronous belt, wherein the active synchronization wheel is arranged on the transmission shaft, it is described from
Dynamic synchronizing wheel is rotatably connected on the bottom plate of the molding room, the synchronous belt along the groove extending direction horizontal circle
In the active synchronization wheel and the driven synchronizing wheel, connected between the synchronous belt and the cantilever by connector, it is described
Connector is mounted on the synchronous belt.
Preferably, the powdering drive mechanism further includes laterally steering mechanism, and the laterally steering mechanism is two groups, and point
Not Wei Yu the synchronous belt two sides；Every group of laterally steering mechanism include the horizontal slide rail being arranged on the bottom plate of molding room and
Transverse slider on the cantilever is set, wherein the horizontal slide rail extends along the length direction of the groove, the cross
It is mounted in the horizontal slide rail to sliding block.
Preferably, the powder leakage slot for recycling extra metal powder is additionally provided in second installation space, it is described
Powder leakage slot is arranged on the bottom plate of molding room.
The working principle of powder feeding and spreading device for SLM type metal 3D printer of the invention is:
When work, vertical driving mechanism drives piston piece to do vertical motion, so that the metal powder in powder feeding cylinder be pushed
Onto the bottom plate of molding room, then powdering drive mechanism drives powder supply mechanism movement, so that metal powder is laid on molding room
Moulding cylinder in, detailed process are as follows:
(1) when the precision of present invention part to be processed is higher, the purity of used metal powder is higher, impurity
Content is lower.Before work, the height of the scraping blade is adjusted by the second regulating mechanism, so that the height of the scraping blade is higher than described scrape
The height of plate when work, drives cantilever motion by powdering drive mechanism that is, so that the scraper plate is in running order, thus
It drives scraper plate to move and metal powder is routed in moulding cylinder.In the process, the flat and wide bottom of scraper plate can will be golden
Belong to powder to flatten, so that the powdering layer in moulding cylinder is more plain, uniform.
(2) when the precision of present invention part to be processed is lower, it is used be metal powder purity it is more, because
This contains more impurity.Before work, the height that the first regulating mechanism adjusts the scraper plate is first passed through, so that the height of the scraper plate
Degree is higher than the height of the scraping blade, i.e., so that the scraping blade is in running order.When work, driven by powdering drive mechanism outstanding
Arm movement, to drive scraping blade to move and metal powder is routed in moulding cylinder.In the process, due to the bottom quilt of scraping blade
The steel disc item for dense arrangement is cut out, so that the bottom of the scraping blade has certain flexibility, is worked as during powdering
When scraping blade encounters big and hard impurity particle, due to the flexibility of steel disc item, the steel disc item contacted can be with temporary bend simultaneously
Impurity particle is crossed, is then restored to normal condition again, thus avoid that hardness shock occurs with impurity particle as scraper plate, into
And protect powdering module of the invention.
Due to powder feeding cylinder, that is, moulding cylinder of the invention, can making powder feeding chamber and forming cavity in this way, this is not only apart from closer
Powdering stroke can be shortened, improve powdering efficiency, but also metal powder useless among powder feeding chamber and forming cavity can be reduced
Amount, to reduce the waste of metal powder.In addition, moulding cylinder and powder feeding cylinder design are integrated, SLM type can be not only reduced
The volume of metal 3D printer, and make the installation of the SLM type metal 3D printer simpler.
The present invention have compared with prior art it is below the utility model has the advantages that
1, powdering module of the invention is there are two types of powdering mode, used when needing the higher part of machining accuracy
The purity of metal powder is higher, and impurity content is lower, drives scraper plate movement that can spread metal powder by powdering drive mechanism
It is located in moulding cylinder, the flat and wide bottom of the scraper plate can flatten metal powder, so that the powdering layer in moulding cylinder is more
Add plain, uniform.When needing the lower part of machining accuracy, the purity of used metal powder is lower, impurity content compared with
Height, during driving scraping blade movement that metal powder is laid on moulding cylinder by powdering drive mechanism, due to the bottom of scraping blade
It is tailored the steel disc item for dense arrangement, so that the bottom of the scraping blade has certain flexibility, during powdering
When scraping blade encounters big and hard impurity particle, due to the flexibility of steel disc item, the steel disc item contacted can be with temporary bend
And impurity particle is crossed, it then is restored to normal condition again, thus avoid that hardness shock occurs with impurity particle as scraper plate,
And then protect powdering module of the invention.
2, powdering module of the invention is by the first regulating mechanism of setting and the second regulating mechanism, for adjusting scraper plate respectively
It, in this way can be with free switching operating mode with the height of scraping blade, it can scraping blade work or scraper plate work are freely used, to select
Select different powdering modes.
3, the powder feeding cylinder in powder feeding module of the invention and moulding cylinder are integrated, and can make powder feeding chamber and molding in this way
For chamber apart from closer, this can not only shorten powdering stroke, improve powdering efficiency, but also can reduce in powder feeding chamber and forming cavity
Between useless metal powder amount, to reduce the waste of metal powder.In addition, moulding cylinder and powder feeding cylinder design are integrated,
The volume of SLM type metal 3D printer can be not only reduced, but also makes the installation of the SLM type metal 3D printer simpler
It is single.
Detailed description of the invention
Fig. 1 is the solid of the specific embodiment of the powder feeding and spreading device for SLM type metal 3D printer of the invention
Structural schematic diagram.
Fig. 2-Fig. 4 is the structural schematic diagram of the powder feeding module, wherein Fig. 2 and Fig. 3 is the three-dimensional knot of two different perspectivess
Structure schematic diagram, Fig. 4 are cross-sectional view.
Fig. 5 is the schematic perspective view of powder feeding cylinder.
Fig. 6 is the main view (cross-sectional view) of powder feeding cylinder.
Fig. 7-Fig. 9 is the schematic perspective view of vertical driving mechanism, wherein Fig. 7 and Fig. 8 is the vertical of two different perspectivess
Body structural schematic diagram, Fig. 9 are main view (cross-sectional view).
Figure 10 is the schematic perspective view of seal assembly.
Figure 11 is the main view (cross-sectional view) of seal assembly.
Figure 12-Figure 14 is the schematic perspective view of three different perspectivess of the powdering module.
Figure 15 is the schematic perspective view of the powder supply mechanism.
Figure 16 is the explosive view of the powder supply mechanism.
Figure 17 is the schematic perspective view of partition.
Figure 18 is the cross-sectional view of partition.
Figure 19-Figure 20 is the schematic perspective view of two different perspectivess of powdering drive mechanism and powder supply mechanism.
Figure 21 is the cross-sectional view of powdering drive mechanism.
Specific embodiment
Present invention will now be described in further detail with reference to the embodiments and the accompanying drawings, but embodiments of the present invention are unlimited
In this.
Referring to Fig. 1-Figure 21, the powder feeding and spreading device for SLM type metal 3D printer of the invention includes powder feeding module
With the powdering module that powder feeding module upper end is arranged in, wherein
The powder feeding module includes bracket 6, setting powder feeding cylinder 7 on the frame 6 and for by the metal in powder feeding cylinder 7
Powder is transported to the powder feeding driving mechanism in moulding cylinder, wherein is provided in the powder feeding cylinder 7 for conveying sending for metal powder
Powder chamber 7-1；The powder feeding driving mechanism includes with the piston piece 8 of powder feeding chamber 7-1 cooperation and for driving the piston
Part 8 does the vertical driving mechanism 9 of vertical motion；
The powdering module includes the powder supply mechanism 2 of the bottom plate 1 of molding room being arranged in and for driving powder supply mechanism 2 to transport
The dynamic powdering drive mechanism 3 metal powder to be laid on to the moulding cylinder 7 of molding room, wherein the upper end of the powder feeding cylinder 7 and institute
The bottom plate 1 for stating molding room connects, and fluted 1-1 is arranged in the position contacted with the powder feeding cylinder 7 in the bottom plate 1 of the molding room；
The powder feeding cylinder 7 constitutes the moulding cylinder 7；The powder supply mechanism 2 includes cantilever 2-1, the scraper plate being arranged on the cantilever 2-1
2-2 and scraping blade 2-3, wherein the scraper plate 2-2 and scraping blade 2-3 are set side by side, and the length side of scraper plate 2-2 and scraping blade 2-3
To parallel；The bottom of the scraping blade 2-3 is the steel disc 2-31 of dense arrangement；The powder supply mechanism 2 further includes for adjusting
State the second regulating mechanism 2- of the first regulating mechanism 2-4 of the height of scraper plate 2-2 and the height for adjusting the scraping blade 2-3
5。
Referring to Fig. 1-Figure 11, the shape of the inner cavity of the powder feeding cylinder 7 is that Rouno Cormer Pregrinding Wheel is rectangular.Biggish case can be printed in this way
Body class part.In addition, during piston piece 8 moves up and down can and the inner wall of powder feeding cylinder 7 generate friction, and by powder feeding cylinder 7
It is set as that Rouno Cormer Pregrinding Wheel is rectangular can to make piston piece 8 that big abrasion is less likely to occur, while being also easier to guarantee that metal powder is not fallen
Enter the bottom of powder feeding cylinder 7, and due to powder feeding cylinder 7 be not it is circular, the piston piece 8 just can not be free in 7 inner wall of powder feeding cylinder
Rotation, so the limiting device for preventing piston piece 8 from rotating can be saved in this way for traditional circular powder feeding cylinder 7,
Keep structure simpler.
Referring to Fig. 1-Figure 11, sealing ring is provided between the powder feeding cylinder 7 and the bottom plate 1 of molding room.It can prevent in this way
Air gap leakage of the inert gas between powder feeding cylinder 7 and molding room's bottom plate 1 in molding room.
Referring to Fig. 1-Figure 11, the piston piece 8 include piston head, be arranged in the piston cylinder 8-1 of the piston head lower end with
And the pedestal 8-2 of the lower end the piston cylinder 8-1 is set, wherein the piston head and the powder feeding chamber 7-1 of the powder feeding cylinder 7 match
It closes, which includes substrate 8-3, upper cover plate 8-4, intermediate plate 8-5 and lower cover plate 8-6, wherein the substrate 8-3, upper cover plate
8-4, intermediate plate 8-5 and lower cover plate 8-6 are set gradually straight down, and the substrate 8-3 is mounted on the upper cover plate 8-4；Institute
It states and is respectively arranged with wool felt gasket 8-7 between intermediate plate 8-5 and upper cover plate 8-4 and lower cover plate 8-6；The lower cover plate 8-6 is logical
It crosses screw to be fixed on the intermediate plate 8-5, the upper cover plate 8-4 and intermediate plate 8-5 are mounted on the piston cylinder by screw
On 8-1.By the way that above structure is arranged, the dismounting of piston head can be convenient, so that easy cleaning sticks on the piston head
Metal powder.In addition, due to being provided with wool felt gasket 8-7 between the intermediate plate 8-5 and upper cover plate 8-4 and lower cover plate 8-6,
And since wool felt gasket 8-7 is a kind of flexible material, the upper cover plate 8-4 and lower cover plate 8-6 compress wool felt gasket 8-7
On intermediate plate 8-5, so that the edge of wool felt gasket 8-7 and the inner cavity of powder feeding cylinder 7 fit closely, and due to upper cover plate
Between 8-4 and intermediate plate 8-5, wool felt gasket 8-7 is both provided between lower cover plate 8-6 and intermediate plate 8-5, it in this way can be effective
Ground prevents the powder above substrate 8-3 from falling into the bottom of powder feeding cylinder 7.In addition, piston head using upper cover plate 8-4, intermediate plate 8-5 and
Lower cover plate 8-6 is assembled, rather than the upper cover plate 8-4, intermediate plate 8-5 and lower cover plate 8-6 are directly made of one structure,
Its reason is: being not only more easily installed in such a way that three blocks of plates splice, but also wool felt gasket 8-7 can be made to be extruded
More uniform and consolidation, so that metal powder be further prevented to fall into the bottom of powder feeding cylinder 7.
Referring to Fig. 1-Figure 11, the vertical driving mechanism 9 includes vertical driving motor 9-1, the bearing of setting on the frame 6
Fixing seat 9-2 and lead screw transmission mechanism, wherein the bearing fixed seat 9-2 is arranged on the bracket 6, and is located at described
The underface of piston piece 8；The lead screw transmission mechanism include screw rod 9-3 and with the screw rod 9-3 cooperation feed screw nut,
In, the screw rod 9-3 is vertically arranged, and one end of screw rod 9-3 is extend into the piston cylinder 8-1, and the other end is passed down through institute
Bearing fixed seat 9-2 is stated, the bearing fixed seat 9-2 is provided with bearing 9-5 in the position contacted with the screw rod 9-3；It is described
Feed screw nut is mounted on the pedestal 8-2；It is also set up between the main shaft and the screw rod 9-3 of the vertical driving motor 9-1
Having synchronous drive mechanism 9-6, the synchronous drive mechanism 9-6 is synchronous belt drive mechanism or gear drive or chain conveyer
Mechanism.When work, vertical driving motor 9-1 drives screw rod 9-3 rotation by synchronous drive mechanism 9-6, to drive screw rod spiral shell
Female and 8 vertical motion of piston piece completes metal 3D printing to drive the metal powder vertical motion in powder feeding cylinder 7 with this
Work.
Referring to Fig. 1-Figure 11, the upper end of the bearing fixed seat 9-2 is provided with anticollison block 9-7, and the anticollison block 9-7 is by bullet
Property material is made.When there is program or mechanical breakdown, the pedestal 8-2 and anticollison block 9-7 of piston cylinder 8-1 bump against, not only can be with
It prevents part to be damaged, but also can reduce vibration caused by collision, prevent from causing other parts because of the vibration of generation
Damage.
It is sealing referring to Fig. 1-Figure 11, at the top of the piston cylinder 8-1, it is therefore an objective to can prevent outside air from passing through work
The bottom plug tube 8-1 simultaneously enters in powder feeding cylinder 7 along the inner cavity of piston cylinder 8-1 and flows into molding room again.
Referring to Fig. 1-Figure 11, the bearing 9-5 in the bearing fixed seat 9-2 is two, and two bearing 9-5 are set side by side,
Biggish radial force (screw rod bottom is equipped with synchronous pulley, and synchronous belt tensioning can generate radial force) not only can be born, is made
Safety coefficient increases and is less prone to damage, and it is more stable when screw rod 9-2 is rotated and do not allow to be also easy to produce shaking,
The stability of the whole device made is further enhanced.The outer ring of bearing 9-5 is fixed with bearing gland 9-8, inner ring connecting shaft
9-4 is covered, and is tightened with nut 9-9, so that bearing 9-5 is rotated together with screw rod 9-2.
Referring to Fig. 1-Figure 11, the powder feeding cylinder 7 is provided with seal assembly in the position contacted with the piston cylinder 8-1, institute
The bottom that seal assembly is mounted on powder feeding cylinder 7 is stated, including mounting disc 7-2 and the guiding of the two sides mounting disc 7-2 or more is set
Sleeve 7-3, wherein the mounting disc 7-2 is fixed by screws in the lower end of the powder feeding cylinder 7；The pilot sleeve 7-3 passes through
Screw is fixed on the mounting disc 7-2, and the pilot sleeve 7-3 is provided with U at the position contacted with the mounting disc 7-2
Type sealing ring 7-4, the internal diameter of the U-shaped sealing ring 7-4 is equal with the internal diameter of the pilot sleeve 7-3, and the mounting disc 7-2 exists
The corresponding position of the U-shaped sealing ring 7-4 is provided with confined planes.Gas can be prevented in this way by mounting disc 7-2 and is sent
The gap of 7 bottom of powder cylinder flows in or out, to play sealing effect.
Referring to Fig. 1-Figure 11, the mounting disc 7-2 is additionally provided with O-ring seal 7-5 between the powder feeding cylinder 7.
Referring to Figure 12-Figure 21, the first regulating mechanism 2-4 includes the first adjustable plate 2-41, and the scraper plate 2-2 is mounted on
It on first adjustable plate 2-41, is connected by screw between the first adjustable plate 2-41 and the cantilever 2-1, described first is adjusted
The first vertical guiding mechanism and the first spring 2-42 are additionally provided between plate 2-41 and the cantilever 2-1, described first vertically leads
To mechanism include the first guide post 2-43 being arranged on the first adjustable plate 2-41 and be arranged on the cantilever 2-1 with
First pilot hole 2-44 of the first guide post 2-43 cooperation；The first spring 2-42 is set in the first guide post 2-43
On, the both ends of first spring 2-42 are respectively acting on the first adjustable plate 2-41 and the cantilever 2-1.Its purpose exists
In (1) turns screw when needing to adjust the height of the scraper plate 2-2, so that the first adjustable plate 2-41 does vertical fortune
It is dynamic, to realize the height adjustment of the first adjustable plate 2-41.(2) when adjusting the height of the first adjustable plate 2-41, described first
Vertical guiding mechanism can vertically be oriented to first adjustable plate 2-41, to prevent the scraper plate 2-2 in vertical motion
During shift.Next can also be used to the freedom degree of the first adjustable plate 2-41 of limitation, prevent it during powdering
Occur all around to shake and rotate.(3) due to the first spring 2-42 be arranged the first adjustable plate 2-41 and cantilever 2-1 it
Between, therefore when adjusting loose screw to move down the first adjustable plate 2-41, the elastic force of the first spring 2-42 pushes the first adjustable plate
2-41, so that the first adjustable plate 2-41 is easier to move down.And the first spring 2-42 is also possible to prevent the first adjusting
The upward play of plate 2-41.
Referring to Figure 12-Figure 21, the second regulating mechanism 2-5 includes the second adjustable plate 2-51, and the scraping blade 2-3 is mounted on
It on second adjustable plate 2-51, is connected by screw between the second adjustable plate 2-51 and the cantilever 2-1, described second is adjusted
The second vertical guiding mechanism and second spring 2-52 are additionally provided between plate 2-51 and the cantilever 2-1, described second vertically leads
To mechanism include the second guide post 2-53 being arranged on the second adjustable plate 2-51 and be arranged on the cantilever 2-1 with
Second pilot hole 2-54 of the second guide post 2-53 cooperation；The second spring 2-52 is set in the second guide post 2-53
On, the both ends of second spring 2-52 are respectively acting on the second adjustable plate 2-51 and the cantilever 2-1.Its purpose exists
In (1) turns screw when needing to adjust the height of the scraping blade 2-3, so that the second adjustable plate 2-51 does vertical fortune
It is dynamic, to realize the height adjustment of the second adjustable plate 2-51.(2) when adjusting the height of the second adjustable plate 2-51, described second
Vertical guiding mechanism can vertically be oriented to second adjustable plate 2-51, to prevent the scraping blade 2-3 in vertical motion
During shift.Next can also be used to the freedom degree of the second adjustable plate 2-51 of limitation, prevent it during powdering
Occur all around to shake and rotate.(3) due to second spring 2-52 be arranged the second adjustable plate 2-51 and cantilever 2-1 it
Between, therefore when adjusting loose screw to move down the second adjustable plate 2-51, the elastic force of the second spring 2-52 pushes the second adjustable plate
2-51, so that the second adjustable plate 2-51 is easier to move down.And the second spring 2-52 is also possible to prevent the second adjusting
The upward play of plate 2-51.
Referring to Figure 12-Figure 21, the powdering module further includes the demarcation plate 5 being arranged in molding room, and the demarcation plate 5 will
The molding room is divided into the first installation space and the second installation space, wherein the first installation space drives for installing the powdering
Motivation structure 3,3D printing of second installation space for part are processed；It is provided on the demarcation plate 5 and is passed through with for cantilever 2-1
Groove, the groove along the demarcation plate 5 length direction horizontal extension；The demarcation plate 5 is arranged on the groove
Have for preventing the black smoke generated when printing from passing through the partition 4 that groove enters the first installation space；The partition 4
Including the guide rail 4-1 being arranged on the groove, the cloth 4-2 with guide rail 4-1 cooperation being arranged in the guide rail 4-1
And the laterally driven machine for driving the cloth 4-2 to move synchronously along the length direction of guide rail 4-1 with the cantilever 2-1
Structure, wherein the guide rail 4-1 extends along the length direction of the groove；The cloth 4-2 is contacted with the cantilever 2-1
Position be provided with the cantilever 2-1 cooperation notch 4-21；The transversal driving mechanism promotes the cloth 4-2 to hang with described
Arm 2-1 is moved synchronously and is blocked the groove always.
Its object is to: metal 3D printer during the work time, laser scanning metal powder, due in metal powder
Carbon, low-melting alloy element and the impurity element burning, gasification contained can generate black smoke.Although part black smoke is formed
Indoor argon gas is taken away and is sponged by filter, but still has part black smoke that can descend slowly and lightly into powdering drive mechanism 3, with black smoke
Accumulation aggregation, will affect the normal work of each part, influence its service life, also will cause powdering drive mechanism for a long time
3 it is stuck.To cause print job that can not continue.In addition may also occur in laser irradiation to powdering drive mechanism 3
The case where damaging the part of the powdering drive mechanism 3, therefore, powdering module of the invention, will by setting demarcation plate 5
Molding room is divided into two independent installation spaces, one of them 3D printing for being used for part is processed, and another is then used to pacify
Fill powdering drive mechanism 3.When work, powdering drive mechanism 3 drives cantilever 2-1 to do transverse movement, institute in the groove of demarcation plate 5
State the cloth 4-2 movement for driving and being arranged in guide rail 4-1 while cantilever 2-1 movement, in this motion process, the cloth 4-
2 are always positioned in the guide rail 4-1, to play the role of blocking groove, generate when printing in this way in the second installation space
Black smoke cannot be entered in the first installation space by the groove, to protect powdering drive mechanism 3.Further, since
Demarcation plate 5 is provided between the first installation space and the second installation space, therefore can be to avoid laser irradiation to the first installation
In the powdering drive mechanism 3 in space, to further protect powdering module of the invention.
Referring to Figure 12-Figure 21, the transversal driving mechanism includes being arranged on the demarcation plate 5 to be located at second peace
Fill the first reel 4-3, the second reel 4-4 at space and for driving the first reel 4-3 and second to wind
The rolling transmission mechanism 4-5 that cylinder 4-4 is rotated synchronously, wherein the first reel 4-3 is located at the left side of the groove, and leads to
The first Scroll 4-6 is crossed to be rotatably connected on the demarcation plate 5；The second reel 4-4 is located at the right side of the groove, and
It is rotatably connected on the demarcation plate 5 by the second Scroll 4-7, wherein the first Scroll 4-6 and the second Scroll 4-
7 is vertically arranged；The both ends of the cloth 4-2 are looped around respectively on the first reel 4-3 and the second reel 4-4.In this way,
When powdering drive mechanism 3 drives cloth 4-2 movement, one of reel discharges cloth 4-2, and another reel is wound
Cloth 4-2, such as when cloth 4-2 is moved downward, the second reel 4-4 positioned at right side discharges cloth 4-2, and is located at groove
The cloth 4-2 in left side then winds cloth 4-2, the first reel 4-3 and the second reel 4-4 synchronous rotation, thus may be used
To guarantee that cloth 4-2 is blocked always in the groove of the demarcation plate 5, to avoid the black smoke generated in the second installation space logical
It crosses groove to enter in the first installation space, and then protects powdering drive mechanism 3.
Referring to Figure 12-Figure 21, the rolling transmission mechanism 4-5 includes first be arranged on the first Scroll 4-6
Synchronizing wheel, the second synchronizing wheel being arranged on the second Scroll 4-7 and it is looped around the first synchronizing wheel and the second synchronizing wheel
On transmission belt.By the way that the rolling transmission mechanism 4-5 is arranged, so that the first reel 4-3 and the second reel 4-4 be driven to do
It moves synchronously.
Referring to Figure 12-Figure 21, cemented between the strap and the cantilever 2-1 by glue.It can be used to add so stifled
Gap between the two, so that the gap that the black smoke for preventing printing from generating passes through between the two enters in the first installation space.
In addition, cloth 4-2 is made to be hardened after the glue solidifies, cantilever 2-1 is easier to drag cloth 4-2 movement.
Referring to Figure 12-Figure 21, the powdering drive mechanism 3 includes motor fixing seat 3-1, is arranged in motor fixing seat 3-1
On driving motor 3-2, transmission shaft 3-3 and synchronous belt drive mechanism, wherein the motor fixing seat 3-1 is mounted on described
On the bottom plate 1 of molding room, the driving motor 3-2 is mounted vertically on the motor fixing seat 3-1, driving motor 3-2's
It is connected between main shaft and the transmission shaft 3-3 by shaft coupling 3-4；The upper and lower ends of the transmission shaft 3-3 are rotated by bearing
It is connected on the motor fixing seat 3-1；The synchronous belt drive mechanism includes that the active that is arranged on the transmission shaft 3-3 is same
Step wheel 3-5, driven synchronizing wheel 3-6 and synchronous belt 3-7, wherein the driven synchronizing wheel 3-6 is rotatably connected on the bottom plate 1
On, the synchronous belt 3-7 is along the extending direction horizontal circle of the groove in the active synchronization wheel 3-5 and described driven same
On step wheel 3-6, connected between synchronous belt 3-7 and the cantilever 2-1 by connector 3-8, the connector 3-8 is mounted on institute
It states on synchronous belt 3-7.Active synchronization wheel 3-5 rotation is driven by driving motor 3-2, so that synchronous belt 3-7 cycle rotation is driven,
And then cantilever 2-1 is driven to move reciprocatingly along the extending direction of the groove.In addition, when due to synchronous belt 3-7 tensioning
Clamp force is all applied on the transmission shaft 3-3, and the main shaft for avoiding driving motor 3-2 is directly contacted with active synchronization wheel 3-5,
When so that the main shaft that the main shaft of the driving motor 3-2 without radial force is subjected to, greatly reduces driving motor 3-2 working
Driving motor 3-2 can be effectively protected in a possibility that fracture.
Referring to Figure 12-Figure 21, limit sleeve is respectively arranged between the upper and lower ends and bearing of the active synchronization wheel 3-5
Cylinder, the spacing collar are set on transmission shaft 3-3, and the upper and lower ends of the sleeve connect with bearing and active synchronization wheel 3-5 respectively
It connects.The spacing collar is rotated together with transmission shaft 3-3 and bearing, and the effect of the spacing collar is to keep active synchronization wheel 3-
5 at a distance from bearing, prevents active synchronization wheel 3-5 or more play.
Referring to Figure 12-Figure 21, the lower end of the driven synchronizing wheel 3-6, the first synchronizing wheel and the second synchronizing wheel are provided with
Spacing collar, and the upper end of the driven synchronizing wheel 3-6, the first synchronizing wheel and the second synchronizing wheel then pass through the cascaded surface of rotation axis
It is limited.Its object is to avoid the driven synchronizing wheel 3-6, the first synchronizing wheel and the second synchronizing wheel from sending out during rotation
Raw vertical displacement, and then guarantee the precision of transmission.
Referring to Figure 12-Figure 21, the powdering drive mechanism 3 further includes laterally steering mechanism 3-9, the laterally steering mechanism
3-9 includes the horizontal slide rail being arranged on bottom plate 1 and the transverse slider that is arranged on the cantilever 2-1, wherein the transverse direction
Sliding rail extends along the length direction of the groove, and the transverse slider is mounted in the horizontal slide rail.Due to synchronous belt 3-7
The driving force of horizontal direction can only be transmitted, and the gravity of powdering brush Yu cantilever 2-1 cannot be born, therefore passes through setting laterally steering
Mechanism 3-9, so that the horizontal slide rail is first is that be used to bear the gravity of powder supply mechanism 2 Yu cantilever 2-1, second is that being used to cantilever 2-
1 movement is oriented to.Cantilever 2-1 is fixed on transverse slider, and the transverse slider uses mute guide rail, in this way in lateral cunning
Horizontal sliding, taxiing procedures are stablized on rail, noise very little.
Referring to Figure 12-Figure 21, the laterally steering mechanism 3-9 is two groups, and is located at the two of the synchronous belt 3-7
Side.The stability that cantilever 2-1 can be increased in this way keeps powdering process steady and is not susceptible to shake.
Referring to Figure 12-Figure 21, the powder leakage for recycling extra metal powder is additionally provided in second installation space
Slot 1-2, the powder leakage slot 1-2 is arranged on the bottom plate 1 of molding room, and connect with surplus powder collecting tank；For recycling extra gold
Belong to powder.
Referring to Fig. 1-Figure 21, the working principle of the powder feeding and spreading device for SLM type metal 3D printer of the invention is:
When work, vertical driving mechanism 9 drives piston piece 8 to do vertical motion, so that the metal powder in powder feeding cylinder 7 be pushed away
It is sent on the bottom plate 1 of molding room, then powdering drive mechanism 3 drives powder supply mechanism 2 to move, so that metal powder is laid on into
In the moulding cylinder of type room, detailed process are as follows:
(1) when the precision of present invention part to be processed is higher, the purity of used metal powder is higher, impurity
Content is lower.Before work, the height of the scraping blade 2-3 is adjusted by the second regulating mechanism 2-5, so that the height of scraping blade 2-3
Higher than the height of the scraper plate 2-2, i.e., so that the scraper plate 2-2 is in running order, when work, pass through powdering drive mechanism 3
Cantilever 2-1 movement is driven, to drive scraper plate 2-2 to move and metal powder is routed in moulding cylinder 7.In the process, it scrapes
Plate 2-2 flat and wide bottom can flatten metal powder, so that the powdering layer in moulding cylinder 7 is more plain, uniform.
(2) when the precision of present invention part to be processed is lower, it is used be metal powder purity it is more, because
This contains more impurity.Before work, the height that the first regulating mechanism 2-4 adjusts the scraper plate 2-2 is first passed through, so that described scrape
The height of plate 2-2 is higher than the height of the scraping blade 2-3, i.e., so that the scraping blade 2-3 is in running order.When work, pass through paving
Powder driving mechanism 3 drives cantilever 2-1 movement, to drive scraping blade 2-3 to move and metal powder is routed in moulding cylinder 7.?
During this, since the bottom of scraping blade 2-3 is tailored the steel disc 2-31 for dense arrangement, so that the scraping blade 2-3
Bottom has certain flexibility, during powdering when scraping blade 2-3 encounters big and hard impurity particle, due to steel disc 2-
31 flexibility, the steel disc 2-31 contacted with temporary bend and can cross impurity particle, then be restored to normal shape again
State to avoid that hardness shock occurs with impurity particle as scraper plate 2-2, and then protects powdering module of the invention.
Since powder feeding cylinder 7 of the invention is moulding cylinder 7, powder feeding chamber 7-1 and forming cavity can be made apart from closer in this way, this
Powdering stroke can not only be shortened to mention, high powdering efficiency, but also gold useless among powder feeding chamber 7-1 and forming cavity can be reduced
The amount for belonging to powder, to reduce the waste of metal powder.In addition, moulding cylinder and the design of powder feeding cylinder 7 are integrated, can not only subtract
The volume of few metal 3D printer, and make the installation of the metal 3D printer simpler.
Above-mentioned is the preferable embodiment of the present invention, but embodiments of the present invention are not limited by the foregoing content,
His any change made without departing from the spirit and principles of the present invention, modification, substitution, block close, are simplified, should be
The substitute mode of effect, is included within the scope of the present invention.
Claims (10)
1. including powder feeding module and powder feeding module upper end is arranged in a kind of powder feeding and spreading device of SLM type metal 3D printer
Powdering module, which is characterized in that
The powder feeding module include bracket, the powder feeding cylinder being arranged on bracket and for by powder feeding cylinder metal powder convey
Powder feeding driving mechanism into moulding cylinder, wherein the powder feeding chamber for conveying metal powder is provided in the powder feeding cylinder；It is described
Powder feeding driving mechanism includes with the piston piece of powder feeding chamber cooperation and for driving the piston piece to do the perpendicular of vertical motion
To driving mechanism；
The powdering module include the powder supply mechanism being arranged on the bottom plate of molding room and for drive powder supply mechanism to move with
Powdering drive mechanism metal powder being laid in the moulding cylinder of molding room, wherein the upper end of the powder feeding cylinder and it is described at
The bottom plate of type room connects, and the powder feeding cylinder constitutes the moulding cylinder；The powder supply mechanism includes cantilever, is arranged on the cantilever
Scraper plate and scraping blade, wherein the scraper plate and scraping blade are set side by side, and the scraper plate is parallel with the length direction of scraping blade；It is described
The bottom of scraping blade is the steel disc item of dense arrangement；The powder supply mechanism further includes the first tune for adjusting the height of the scraper plate
Second regulating mechanism of section machine dog and the height for adjusting the scraping blade.
2. the powder feeding and spreading device according to claim 1 for SLM type metal 3D printer, which is characterized in that described
Piston piece includes piston head, the piston cylinder that the piston head lower end is arranged in and the pedestal that the piston cylinder lower end is arranged in,
Wherein, the piston head and the powder feeding chamber of the powder feeding cylinder cooperate, which includes substrate, upper cover plate, intermediate plate and lower cover
Plate, wherein the substrate, upper cover plate, intermediate plate and lower cover plate are set gradually straight down, and the substrate is mounted on the upper cover
On plate；Wool felt gasket is respectively arranged between the intermediate plate and upper cover plate and lower cover plate；The lower cover plate is solid by screw
It is scheduled on the intermediate plate, the upper cover plate and intermediate plate are mounted on the piston cylinder by screw.
3. the powder feeding and spreading device according to claim 2 for SLM type metal 3D printer, which is characterized in that described
Vertical driving mechanism includes vertical driving motor, bearing fixed seat and the lead screw transmission mechanism being arranged on bracket, wherein institute
It states bearing fixed seat setting on the bracket, and is located at the underface of the piston piece；The lead screw transmission mechanism includes silk
Bar and the feed screw nut cooperated with the screw rod, wherein the screw rod is vertically arranged, and one end of the screw rod extend into the work
In plug tube, the other end is passed down through the bearing fixed seat, and the bearing fixed seat is arranged in the position contacted with the screw rod
There is bearing；The feed screw nut is mounted on the base；It is also set between the main shaft and the screw rod of the vertical driving motor
It is equipped with synchronous drive mechanism, the synchronous drive mechanism is synchronous belt drive mechanism or gear drive or chain conveyer machine
Structure.
4. the powder feeding and spreading device according to claim 3 for SLM type metal 3D printer, which is characterized in that described
Powder feeding cylinder is provided with seal assembly in the position contacted with the piston cylinder, and the seal assembly is mounted on the bottom of powder feeding cylinder,
Including mounting disc and the pilot sleeves of mounting disc or more two sides is set, wherein the mounting disc is fixed by attachment screw
In the lower end of the powder feeding cylinder；The pilot sleeve is fixed by screws in the mounting disc, the pilot sleeve with institute
It states and is provided with U-shaped sealing ring, the internal diameter phase of the internal diameter and the pilot sleeve of the U-shaped sealing ring at the position of mounting disc contact
Deng the mounting disc is provided with confined planes in the corresponding position with the U-shaped sealing ring.
5. the powder feeding and spreading device according to claim 1 for SLM type metal 3D printer, which is characterized in that described
First regulating mechanism includes the first adjustable plate, and the scraper plate is mounted on the first adjustable plate, and first adjustable plate is hanged with described
It is connected by screw between arm；The first vertical guiding mechanism and first are additionally provided between first adjustable plate and the cantilever
Spring, wherein the first vertical guiding mechanism includes that the first guide post being arranged on first adjustable plate and setting exist
The first pilot hole with first guide post cooperation on the cantilever；First spring is set on first guide post,
The both ends of first spring are respectively acting on first adjustable plate and the cantilever；Second regulating mechanism includes second
Adjustable plate, the scraping blade are mounted on the second adjustable plate, are connected by screw between second adjustable plate and the cantilever；Institute
It states and is additionally provided with the second vertical guiding mechanism and second spring between the second adjustable plate and the cantilever, wherein described second is perpendicular
To guiding mechanism include the second guide post being arranged on second adjustable plate and be arranged on the cantilever with described
Second pilot hole of two guide posts cooperation；The second spring is set on second guide post, the both ends difference of the second spring
It acts on second adjustable plate and the cantilever.
6. the powder feeding and spreading device according to claim 1 for SLM type metal 3D printer, which is characterized in that described
Powdering module further includes the demarcation plate being arranged in molding room, and the molding room is divided into the first installation space by the demarcation plate
With the second installation space, wherein the first installation space is for installing the powdering drive mechanism, the second installation space is for part
3D printing；Be provided with the groove passed through for cantilever on the demarcation plate, the groove along the demarcation plate length side
To horizontal extension；The black smoke that the demarcation plate is generated when being provided on the groove for preventing 3D printing enters across groove
To the partition of the first installation space；The partition includes the guide rail being arranged on the groove, is arranged and leads described
In rail with the guide rail cooperation cloth and for driving the cloth synchronous with the cantilever along the length direction of guide rail
The transversal driving mechanism of movement, wherein the guide rail extends along the length direction of the groove；The cloth is hanged with described
The position of arm contact is provided with the notch with cantilever cooperation；The transversal driving mechanism promotes the cloth to do with the cantilever
It moves synchronously and blocks the groove always.
7. the powder feeding and spreading device according to claim 6 for SLM type metal 3D printer, which is characterized in that described
Transversal driving mechanism includes the first reel being located at first installation space being arranged on the demarcation plate, the second receipts
Reel and rolling transmission mechanism for driving first reel and the second reel to rotate synchronously, wherein described the
One reel is located at the left side of the groove, and is rotatably connected on the demarcation plate by the first Scroll；Described second receives
Reel is located at the right side of the groove, and is rotatably connected on the demarcation plate by the second Scroll；Wherein, it described first receives
Spool and the second Scroll are vertically arranged；The both ends of the cloth are looped around first reel and the second reel respectively
On.
8. the powder feeding and spreading device according to claim 7 for SLM type metal 3D printer, which is characterized in that described
Powdering drive mechanism includes motor fixing seat, the driving motor being arranged in motor fixing seat, transmission shaft and toothed belt transmission
Mechanism, wherein the motor fixing seat is mounted on the bottom plate of the molding room, and the driving motor is mounted vertically in the electricity
In machine fixing seat, connected between the main shaft of the driving motor and the transmission shaft by shaft coupling；Up and down the two of the transmission shaft
End is rotatably connected in the motor fixing seat by bearing；The synchronous belt drive mechanism includes active synchronization wheel, driven same
Step wheel and synchronous belt, wherein the active synchronization wheel is arranged on the transmission shaft, and the driven synchronizing wheel is rotatably connected on
On the bottom plate of the molding room, the synchronous belt along the extending direction horizontal circle of the groove in the active synchronization wheel and
It in the driven synchronizing wheel, is connected between the synchronous belt and the cantilever by connector, the connector is mounted on described same
Step takes.
9. the powder feeding and spreading device according to claim 8 for SLM type metal 3D printer, which is characterized in that described
Powdering drive mechanism further includes laterally steering mechanism, and the laterally steering mechanism is two groups, and is located at the synchronous belt
Two sides；Every group of laterally steering mechanism includes the horizontal slide rail being arranged on the bottom plate of molding room and is arranged on the cantilever
Transverse slider, wherein the horizontal slide rail extends along the length direction of the groove, and the transverse slider is mounted on the cross
To on sliding rail.
10. the powder feeding and spreading device according to claim 1 for SLM type metal 3D printer, which is characterized in that described
The powder leakage slot for recycling extra metal powder is additionally provided in second installation space, molding room is arranged in the powder leakage slot
On bottom plate.
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| CN201910584795.8A CN110181053B (en) | 2019-07-01 | 2019-07-01 | Powder feeding and spreading device for SLM type metal 3D printer |
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| CN201910584795.8A CN110181053B (en) | 2019-07-01 | 2019-07-01 | Powder feeding and spreading device for SLM type metal 3D printer |
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| CN111112615A (en) * | 2019-12-31 | 2020-05-08 | 安徽恒利增材制造科技有限公司 | Adjustable powder paving mechanism for metal powder printer |
| CN111659891A (en) * | 2020-07-07 | 2020-09-15 | 西安工业大学 | Powder feeding and spreading device of SLM type metal 3D printer |
| CN111842891A (en) * | 2020-06-30 | 2020-10-30 | 华中科技大学 | Device for improving powder paving quality in metal powder bed additive manufacturing process |
| CN111957953A (en) * | 2020-08-26 | 2020-11-20 | 东北林业大学 | Laser sintering equipment |
| CN112475323A (en) * | 2020-11-25 | 2021-03-12 | 北京星航机电装备有限公司 | Metal 3D printer forming cylinder system |
| CN112974855A (en) * | 2021-02-07 | 2021-06-18 | 佛山市佛威精密机器有限公司 | Powder feeding device for SLM type metal 3D printer |
| CN112974852A (en) * | 2021-02-07 | 2021-06-18 | 佛山市佛威精密机器有限公司 | Powder paving device for SLM type metal 3D printer |
| CN114192806A (en) * | 2021-11-04 | 2022-03-18 | 南京航浦机械科技有限公司 | Powder laying device for selective laser melting forming |
| CN114433881A (en) * | 2022-02-11 | 2022-05-06 | 深圳市金石三维打印科技有限公司 | Powder paving device for SLM type metal 3D printer |
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