CN113976919A - 3D printing powder recovery system and use method - Google Patents
3D printing powder recovery system and use method Download PDFInfo
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- CN113976919A CN113976919A CN202111393681.9A CN202111393681A CN113976919A CN 113976919 A CN113976919 A CN 113976919A CN 202111393681 A CN202111393681 A CN 202111393681A CN 113976919 A CN113976919 A CN 113976919A
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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
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/70—Recycling
- B22F10/73—Recycling of powder
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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
- 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]
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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
- B22F12/70—Gas flow means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
- B33Y40/20—Post-treatment, e.g. curing, coating or polishing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
Abstract
The invention relates to a 3D printing powder recovery system and a using method, which are used for recovering 3D printing powder remained in a bin of a 3D printer and comprise a filling device, a powder storage tank and a fan, wherein the filling device comprises a lower bin and a filter positioned above the lower bin, the lower bin is provided with a first powder inlet, and the bottom end of the lower bin is provided with a first powder outlet; the powder storage tank is positioned under the filling device and is connected with the filling device; the fan is connected with the top of the filter through an air suction pipe. According to the invention, the fan is arranged to continuously suck the gas in the feed bin through the air suction pipe through the filter, so that negative pressure is formed in the feed bin, the 3D printing powder in the 3D printer bin is sucked through the negative pressure and falls into the powder storage tank, the automatic recovery of the 3D printing powder remained in the 3D printer bin is realized, and the oxidation of the 3D printing powder caused by the contact with air in the recovery process is effectively prevented.
Description
Technical Field
The invention relates to the technical field of additive manufacturing, in particular to a 3D printing powder recovery system and a using method thereof.
Background
Selective Laser Melting (SLM) is the most mainstream technological means in the metal 3D printing industry nowadays, has the advantages of high material utilization rate, wide applicable material range, capability of manufacturing parts with complex shapes and the like, and is a rapid molding technology with great development prospect. The main working principle is that a file obtained after three-dimensional modeling and slicing is guided into 3D printing equipment, metal powder with a scraper less than 53 mu m is flatly spread based on a powder feeding and spreading mode, and a high-energy laser is controlled by a computer to scan the outline layer by layer to stack and form a workpiece.
The SLM process is also one of Powder Bed Fusion (PBF) processes, a lot of powder is left in a printer to be recycled after printing each time, and at present, many 3D printing users recover the powder in a manual powder recovery mode, so that the powder is easily contacted with an external environment to cause cross pollution of the powder and the environment, and the problems of reduced powder pollution performance, environmental safety and the like exist; especially, when the metal powder is recovered after 3D printing, the metal powder is easy to contact with the external environment, is easy to damp and oxidize and denature in the air, and the active metal powder has flammable and explosive risks in the air.
In view of this, it is necessary for those skilled in the art to develop a 3D printing powder recycling system, which can automatically recycle 3D printing powder remaining in a bin of a 3D printer, not only effectively prevent the 3D printing powder from being oxidized when contacting with air during the recycling process, but also avoid the powder remaining in the recycling system, and has high recycling efficiency.
Disclosure of Invention
The invention aims to provide a 3D printing powder recovery system which can automatically recover 3D printing powder remained in a bin of a 3D printer.
In order to achieve the purpose, the invention adopts the technical scheme that: 3D prints powder recovery system for retrieve remaining 3D in 3D printer machine storehouse and print powder, include
The filling device comprises a discharging bin and a filter positioned above the discharging bin, a first powder inlet is formed in the discharging bin, and a first powder outlet is formed in the bottom end of the discharging bin;
the powder storage tank is positioned under the filling device and is connected with the filling device, a second powder inlet is formed in the top of the powder storage tank, and a second powder outlet is formed in the bottom of the powder storage tank;
the fan is connected with the top of the filter through an air suction pipe and is used for continuously sucking the gas in the feeding bin through the filter until negative pressure is formed in the feeding bin,
after negative pressure is formed, one part of 3D printing powder in the discharging bin flows to the first powder outlet from the first powder inlet, and one part of the 3D printing powder flows upwards into the filter.
Preferably, the top of the filter is provided with a blowback air bag and an air suction hole, one end of the air suction pipe is connected with the fan, the other end of the air suction pipe is connected with the air suction hole, and the blowback air bag is used for blowback of 3D printing powder absorbed in the filter into the feed bin.
Preferably, still include the frame, filling device, store up whitewashed and all install on the frame with the fan.
Preferably, one side of the rack is provided with a digital display screen, and the digital display screen is used for operating the opening and closing of the fan.
Preferably, the front end of frame is provided with and is used for placing the support of filling device, the fan be located the rear end of frame and with digital display screen electric connection, filling device with store up the powder jar and place from top to bottom the front end of frame.
Preferably, a moving device for moving the 3D printing powder recovery system is disposed below the machine frame.
Preferably, the moving device comprises moving rollers arranged at four corners below the frame.
Preferably, the bottom of the powder storage tank is provided with a weighing mechanism, and the weight of the stored powder in the powder storage tank is displayed through a digital display screen on one side of the rack.
Preferably, a first powder outlet control valve is installed at the first powder outlet; and a second powder inlet control valve is installed at the second powder inlet, and a second powder outlet control valve is installed at the second powder outlet.
Preferably, the width of the bin body of the blanking bin close to the bottom end is gradually reduced from one end close to the first powder inlet along the flowing direction of the powder.
Preferably, the feed bin comprises a cylindrical bin body and an inverted cone-shaped bin body located below the cylindrical bin body, the first powder outlet is located on one side of the inverted cone-shaped bin body, and the first powder inlet is located on one side of the cylindrical bin body.
Preferably, the width of the powder storage tank is gradually reduced from one end close to the powder inlet along the flowing direction of the powder; more preferably, the powder storage bin is in an inverted cone shape.
Preferably, the first powder inlet on the filling device is connected with the 3D printer cabin through a powder suction pipe.
Preferably, the second powder inlet is connected with the first powder outlet through a pipeline.
Preferably, the conduit comprises a bellows.
Preferably, store up the powder and irritate including storing up powder storehouse and setting up at the outside protective housing of storing up powder storehouse, the bottom fixedly connected with fork of outside protective housing transports the groove, fork transports the groove and is used for supplying fork truck fork to get.
The application also claims a using method of the 3D printing powder recycling system, which adopts the 3D printing powder recycling system described above, and includes the following steps:
s1, moving the whole powder recovery system beside the 3D printer, and connecting the fan with the top of the filter through an air suction pipe;
s2, moving the powder storage tank to the position right below the discharging bin, and connecting a first powder outlet of the discharging bin with a second powder inlet of the powder storage tank through a pipeline;
s3, closing a second powder outlet below the powder storage tank and opening a second powder inlet above the powder storage tank;
s4, starting a fan, and continuously sucking the gas in the blanking bin through a filter by an air suction pipe until negative pressure is formed in the blanking bin;
s5, connect first powder inlet and 3D printer storehouse, adsorb the 3D printing powder in the 3D printer storehouse to the feed bin through the negative pressure, the powder falls to the powder storage tank through the feed bin, and is accomplished to the whole recovery of powder.
Preferably, in step S5, a part of the 3D printing powder in the lower bin after the negative pressure is formed flows from the first powder inlet to the first powder outlet, and a part of the 3D printing powder flows upwards into the filter.
Preferably, the upward powder is absorbed by the filter, and the powder absorbed in the filter is blown back into the blanking bin through the blowback air bag and finally enters the powder storage tank.
Preferably, in step S4, the blower is turned on through the digital display screen, and in step S5, the weight of the 3D printing powder in the powder storage tank is sensed through the weighing mechanism, and the powder suction amount is displayed through the digital display screen until the powder is completely recovered.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
1. according to the invention, the fan is arranged to continuously suck the gas in the feed bin through the air suction pipe by the filter, so that negative pressure is formed in the feed bin, the 3D printing powder in the 3D printer bin is sucked by the negative pressure and falls into the powder storage tank, the automatic recovery of the 3D printing powder remained in the 3D printer bin is realized, and the oxidation of the 3D printing powder caused by the contact with air in the recovery process is effectively prevented;
2. according to the invention, the filter and the back-blowing air bag on the filter are arranged to back-blow the 3D printing powder adsorbed in the filter into the blanking bin and finally into the powder storage tank, so that no powder residue is left in the device, and the powder recovery efficiency is improved;
3. the automatic powder recovery device has the advantages that the automatic powder recovery is realized through a simple structure, the use is convenient, the recovery efficiency and the safety are improved, and the production and use requirements are met.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that some of the drawings in the following description are embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a front view of one embodiment of the present invention;
FIG. 2 is a top view of one embodiment of the present invention;
FIG. 3 is an enlarged view of the powder reservoir in one embodiment of the present invention.
Wherein, 1, filling device; 2. discharging a bin; 3. a filter; 4. storing and filling powder; 5. a fan; 6. an air intake duct; 7. a back-blowing air bag; 8. a frame; 9. a support; 10. moving the roller; 11. a weighing mechanism; 12. A pipeline; 13. a powder suction pipe; 14. a suction hole;
21. a first powder inlet; 22. a first powder outlet; 23. a first powder outlet control valve;
41. a second powder inlet; 42. a second powder outlet; 43. a second powder inlet control valve; 44. a second powder outlet control valve; 45. a powder storage bin; 46. an outer protective shell; 47. a fork conveying groove.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
As shown in FIGS. 1-2, a 3D printing powder recycling system for recycling 3D printing powder remained in a bin of a 3D printer comprises
The filling device 1 comprises a lower bin 2 and a filter 3 positioned above the lower bin, wherein a first powder inlet 21 is formed in the lower bin, and a first powder outlet 22 is formed in the bottom end of the lower bin;
the powder storage tank 4 is positioned right below the filling device and connected with the filling device, the top of the powder storage tank is provided with a second powder inlet 41, and the bottom of the powder storage tank is provided with a second powder outlet 42;
the fan 5 is connected with the top of the filter through an air suction pipe 6 and is used for continuously sucking the gas in the blanking bin through the filter until negative pressure is formed in the blanking bin,
after negative pressure is formed, one part of 3D printing powder in the discharging bin flows to the first powder outlet from the first powder inlet, and one part of the 3D printing powder flows upwards into the filter.
Furthermore, the top of the filter is provided with a back blowing air bag 7 and an air suction hole 14, one end of the air suction pipe is connected with the fan, the other end of the air suction pipe is connected with the air suction hole, and the back blowing air bag is used for back blowing the 3D printing powder absorbed in the filter into a discharging bin.
Further, still include frame 8, filling device, storage powder are irritated and the fan is all installed in the frame.
Further, one side of frame is provided with digital display screen, digital display screen is used for the operation the switching of fan.
Further, the front end of frame is provided with and is used for placing filling device's support 9, the fan be located the rear end of frame and with digital display screen electric connection, filling device with store up the powder jar and place from top to bottom the front end of frame.
Further, a moving device for moving the 3D printing powder recovery system is arranged below the rack.
Further, the moving device includes moving rollers 10 disposed at four corners below the frame.
Further, the bottom of the powder storage tank is provided with a weighing mechanism 11, and the weight of the stored powder in the powder storage tank is displayed through a digital display screen on one side of the rack.
Further, a first powder outlet control valve 23 is installed at the first powder outlet; a second powder inlet control valve 43 is installed at the second powder inlet, and a second powder outlet control valve 44 is installed at the second powder outlet.
Furthermore, the width of the bin body of the blanking bin close to the bottom end is gradually reduced from one end close to the first powder inlet along the flowing direction of the powder.
Furthermore, the feed bin comprises a cylindrical bin body and an inverted cone-shaped bin body positioned below the cylindrical bin body, the first powder outlet is positioned on one side of the inverted cone-shaped bin body, and the first powder inlet is positioned on one side of the cylindrical bin body.
Furthermore, the width of the powder storage tank is gradually reduced from one end close to the powder inlet along the flowing direction of the powder.
In other preferred embodiments, the powder storage bin is in an inverted cone shape.
Further, the first powder inlet on the filling device is connected with the bin of the 3D printer through a powder suction pipe 13.
Further, the second powder inlet is connected with the first powder outlet through a pipeline 12.
Further, the conduit comprises a bellows.
Further, store up the powder and irritate including storing up powder storehouse 45 and setting up at the outside external protective housing 46 in storing up the powder storehouse, the bottom fixedly connected with fork of external protective housing transports groove 47, fork transports the groove and is used for supplying fork truck fork to get.
Example two
The present embodiment is performed on the basis of the first embodiment, and the same parts as the first embodiment are not described in detail.
The embodiment mainly introduces a use method of a 3D printing powder recovery system, and the 3D printing powder recovery system described in the first embodiment includes the following steps:
s1, moving the whole powder recovery system beside the 3D printer, and connecting the fan with the top of the filter through an air suction pipe;
s2, moving the powder storage tank to the position right below the discharging bin, and connecting a first powder outlet of the discharging bin with a second powder inlet of the powder storage tank through a pipeline;
s3, closing a second powder outlet below the powder storage tank and opening a second powder inlet above the powder storage tank;
s4, starting a fan, and continuously sucking the gas in the blanking bin through a filter by an air suction pipe until negative pressure is formed in the blanking bin;
s5, connect first powder inlet and 3D printer storehouse, adsorb the 3D printing powder in the 3D printer storehouse to the feed bin through the negative pressure, the powder falls to the powder storage tank through the feed bin, and is accomplished to the whole recovery of powder.
Preferably, in step S5, a part of the 3D printing powder in the lower bin after the negative pressure is formed flows from the first powder inlet to the first powder outlet, and a part of the 3D printing powder flows upwards into the filter.
Preferably, the upward powder is absorbed by the filter, and the powder absorbed in the filter is blown back into the blanking bin through the blowback air bag and finally enters the powder storage tank.
Preferably, in step S4, the blower is turned on through the digital display screen, and in step S5, the weight of the 3D printing powder in the powder storage tank is sensed through the weighing mechanism, and the powder suction amount is displayed through the digital display screen until the powder is completely recovered.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A3D prints powder recovery system for retrieving 3D in 3D printer machine storehouse prints powder, include
The filling device comprises a discharging bin and a filter positioned above the discharging bin, a first powder inlet is formed in the discharging bin, a first powder outlet is formed in the bottom end of the discharging bin, and the first powder inlet is connected with a bin of the 3D printer;
the powder storage tank is positioned under the filling device and is connected with the filling device, a second powder inlet is formed in the top of the powder storage tank, and a second powder outlet is formed in the bottom of the powder storage tank;
the fan is connected with the top of the filter through an air suction pipe and is used for continuously sucking the gas in the feeding bin through the filter until negative pressure is formed in the feeding bin,
after negative pressure is formed, one part of 3D printing powder in the discharging bin flows to the first powder outlet from the first powder inlet, and one part of the 3D printing powder flows upwards into the filter.
2. The 3D printing powder recovery system according to claim 1, wherein a back-blowing air bag and an air suction hole are arranged at the top of the filter, one end of the air suction pipe is connected with the fan, the other end of the air suction pipe is connected with the air suction hole, and the back-blowing air bag is used for back-blowing the 3D printing powder absorbed in the filter into the discharging bin.
3. The 3D printing powder recovery system according to claim 1, further comprising a frame, wherein the filling device, the powder storage tank and the fan are all mounted on the frame.
4. The 3D printing powder recovery system according to claim 3, wherein a digital display screen is arranged on one side of the rack and used for operating the fan to be opened and closed.
5. The 3D printing powder recovery system according to claim 4, wherein a weighing mechanism is arranged at the bottom of the powder storage tank, and the weight of the powder stored in the powder storage tank is displayed through a digital display screen on one side of the rack.
6. The 3D printing powder recovery system according to claim 1, wherein a first powder outlet control valve is installed at the first powder outlet; and a second powder inlet control valve is installed at the second powder inlet, and a second powder outlet control valve is installed at the second powder outlet.
7. The 3D printing powder recovery system according to claim 1, wherein the width of the bin body of the lower bin close to the bottom end is gradually reduced from one end close to the first powder inlet along the flowing direction of the powder.
8. The 3D printing powder recovery system according to claim 1, wherein the first powder inlet on the filling device is connected with the 3D printer bin through a powder suction pipe.
9. The 3D printing powder recovery system according to claim 1, wherein the second powder inlet is connected with the first powder outlet through a pipeline.
10. The use method of the 3D printing powder recycling system is characterized in that the 3D printing powder recycling system of claim 1 is adopted, and the method comprises the following steps:
s1, moving the whole powder recovery system beside the 3D printer, and connecting the fan with the top of the filter through an air suction pipe;
s2, moving the powder storage tank to the position right below the discharging bin, and connecting a first powder outlet of the discharging bin with a second powder inlet of the powder storage tank through a pipeline;
s3, closing a second powder outlet below the powder storage tank and opening a second powder inlet above the powder storage tank;
s4, starting a fan, and continuously sucking the gas in the blanking bin through a filter by an air suction pipe until negative pressure is formed in the blanking bin;
s5, connect first powder inlet and 3D printer storehouse, adsorb the 3D printing powder in the 3D printer storehouse to the feed bin through the negative pressure, the powder falls to the powder storage tank through the feed bin, and is accomplished to the whole recovery of powder.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111393681.9A CN113976919A (en) | 2021-11-23 | 2021-11-23 | 3D printing powder recovery system and use method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111393681.9A CN113976919A (en) | 2021-11-23 | 2021-11-23 | 3D printing powder recovery system and use method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114603082A (en) * | 2022-03-18 | 2022-06-10 | 河北智达维创电子科技有限公司 | Sand mould printer waste sand negative pressure recovery unit |
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