CN220499966U - Powder circulation system and 3D printing equipment - Google Patents
Powder circulation system and 3D printing equipment Download PDFInfo
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- CN220499966U CN220499966U CN202322290437.0U CN202322290437U CN220499966U CN 220499966 U CN220499966 U CN 220499966U CN 202322290437 U CN202322290437 U CN 202322290437U CN 220499966 U CN220499966 U CN 220499966U
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- 239000000843 powder Substances 0.000 title claims abstract description 473
- 238000010146 3D printing Methods 0.000 title claims abstract description 21
- 238000007639 printing Methods 0.000 claims abstract description 120
- 238000011084 recovery Methods 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 claims abstract description 19
- 238000004064 recycling Methods 0.000 claims abstract description 16
- 238000007873 sieving Methods 0.000 claims description 36
- 238000012216 screening Methods 0.000 claims description 27
- 239000002245 particle Substances 0.000 claims description 8
- 230000007423 decrease Effects 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000000465 moulding Methods 0.000 description 20
- 239000000758 substrate Substances 0.000 description 16
- 230000010354 integration Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 238000000110 selective laser sintering Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Abstract
The application relates to the technical field of 3D printing, and aims to solve the technical problems of low recovery efficiency and high labor intensity of the known printing powder, and provides a powder circulation system and 3D printing equipment. The powder circulation system comprises a mounting part, a powder storage device, a forming device, a powder spreading device, a powder collecting part and a powder feeding part. The mounting part is provided with a powder feeding port, a forming port and a recovery port which are arranged at intervals in the transverse direction. The powder storage device is connected to the mounting piece and communicated with the powder feeding port. The forming device is connected to the mounting piece and communicated with the forming opening. The powder spreading device is used for spreading the printing powder exposed from the powder feeding port to the forming device and pushing the redundant printing powder to the recycling port. The powder collecting piece is connected to the mounting piece and communicated with the recovery port, and is used for recovering redundant printing powder in the powder spreading process. The powder feeding part is communicated with the recovery part and is used for receiving printing powder and conveying the printing powder to the powder storage device. The beneficial effects of this application are that improve the recovery efficiency of printing powder, reduce its recovery intensity of labour.
Description
Technical Field
The application relates to the technical field of 3D printing, in particular to a powder circulation system and 3D printing equipment.
Background
The 3D printing technique includes a selective laser sintering technique, the basic molding process of which is: the powder feeding device conveys a certain amount of printing powder to the workbench surface, the scraper lays a layer of printing powder on the printing substrate, and the printing powder is sintered by laser to form a solid part.
In the powder spreading process, after the doctor blade finishes spreading the printing powder, part of the printing powder which cannot be used exists, and after the printing process is finished, the printing powder needs to be manually taken out and new printing powder is added. This operation has the following problems: the labor intensity of the manpower is high, and the efficiency is low; the problem of printing powder exposure exists in the taking out and adding of printing powder, the problem of potential safety hazard to personnel exists, and the environment and the quality of printing powder are influenced.
Disclosure of Invention
The application provides powder circulation system and 3D printing apparatus to solve the technical problem that the known printing powder recovery efficiency is low, intensity of labour is big.
Embodiments of the present application are implemented as follows:
in a first aspect, the present application provides a powder circulation system, including a mounting, a powder storage device, a molding device, a powder spreading device, a powder collecting piece, and a powder feeding piece. The mounting piece is provided with a powder feeding port, a forming port and a recovery port which are arranged at intervals in the transverse direction. The powder storage device is connected to the mounting piece and communicated with the powder feeding port, and is used for storing printing powder. The forming device is connected to the mounting piece and communicated with the forming opening, and is used for bearing the printing powder. The powder spreading device is used for spreading the printing powder exposed from the powder feeding port to the forming device and pushing the surplus printing powder to the recycling port. The powder collecting piece is connected to the mounting piece and communicated with the recovery port, and is used for recovering the redundant printing powder in the powder spreading process. The powder feeding part is communicated with the powder collecting part and used for receiving the printing powder and conveying the printing powder to the powder storage device.
According to the 3D printing equipment, the steps of recycling and reutilizing the residual printing powder in the printing process can be completed in the closed system, powder collecting pieces do not need to be manually and frequently taken and placed, the manual operation frequency and the manual operation labor intensity are greatly reduced, the printing powder cannot be exposed in a workshop environment, the protection effect on the workshop environment is ensured, the possibility of recontamination of the recycling powder in the conveying process is avoided, the quality of the recycling powder is ensured, and the potential safety hazard problem of personnel is reduced. And send powder mouth, shaping mouth and retrieve mouthful in this application all integrate on the installed part, can make shop's powder device in the motion of short distance realize printing the powder lay with retrieve, improve 3D printing apparatus's integrated level, improve printing powder's recovery efficiency.
In one possible embodiment:
the powder circulation system further comprises a powder screening piece, the powder screening piece is communicated with the powder collecting piece and the powder conveying piece, and the powder screening piece is used for receiving and screening the printing powder and conveying the screened printing powder to the powder conveying piece.
In one possible embodiment:
the powder collecting piece, the powder screening piece and the powder feeding piece are arranged on the same side of the mounting piece along the vertical direction, the powder feeding piece is arranged on one side of the powder collecting piece, which is away from the mounting piece, along the vertical direction, and the powder screening piece is arranged between the powder collecting piece and the powder feeding piece along the vertical direction.
In one possible embodiment:
the powder circulation system also comprises two communicating pipes, one communicating pipe is communicated with one side of the powder collecting piece and one side of the powder sieving piece, and the other communicating pipe is communicated with the other side of the powder sieving piece and the powder feeding piece.
In one possible embodiment:
the powder screening piece comprises a powder screening shell and a powder screening structure, wherein two sides of the powder screening shell are respectively communicated with the powder collecting piece and the powder conveying piece, the powder screening structure is arranged in the powder screening shell, and the powder screening structure is used for allowing printing powder with a preset particle size range to pass through and be conveyed to the powder conveying piece.
In one possible embodiment:
the powder circulation system further comprises a conveying piece, one end of the conveying piece is communicated with the powder conveying piece, and the other end of the conveying piece is communicated to one end, close to the powder conveying port, of the powder storage device.
In one possible embodiment:
the conveying member includes: the powder outlet pipe is communicated with the powder feeding piece and is arranged at one end of the powder feeding piece along the longitudinal direction; the powder inlet pipe is communicated with one side of the powder storage device along the longitudinal direction; the powder feeding pipe is arranged on one side of the powder storage device along the longitudinal direction, and two ends of the powder feeding pipe are respectively communicated with the powder outlet pipe and the powder inlet pipe.
In one possible embodiment:
the powder collecting piece is provided with a first guide section, the first guide section is communicated with the powder sieving piece, and the size of the first guide section along the longitudinal direction gradually decreases from the recovery port towards the powder sieving piece so as to guide the printing powder to be conveyed into the powder sieving piece.
In one possible embodiment:
the powder feeding part comprises a powder feeding shell and a spiral powder feeding part, wherein the powder feeding shell is used for accommodating printing powder, the powder feeding shell is communicated with the powder sieving part, the spiral powder feeding part is rotatably arranged in the powder feeding shell, and the spiral powder feeding part is used for driving the printing powder in the powder feeding shell to be conveyed to the powder storage device.
In a second aspect, the present application also provides a 3D printing apparatus comprising a print chamber and the aforementioned powder circulation system. The print pod defines a print chamber. The mounting part of the powder circulation system is connected with the printing cabin
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following description will briefly describe the drawings in the embodiments, it being understood that the following drawings only illustrate some embodiments of the present application and should not be considered as limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a 3D printing apparatus according to an embodiment of the present application;
FIG. 2 is a front view of a powder circulation system according to an embodiment of the present application;
FIG. 3 is a schematic view of a powder circulation system according to an embodiment of the present disclosure;
FIG. 4 is a top view of a powder circulation system according to an embodiment of the present application;
fig. 5 is a side view of a powder circulation system according to an embodiment of the present application.
Description of main reference numerals:
Detailed Description
The following description of the technical solutions in the embodiments of the present application will be made clearly and completely with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "or/and" as used herein includes any and all combinations of one or more of the associated listed items.
Some embodiments of the present application are described in detail. The following embodiments and features of the embodiments may be combined with each other without collision.
The 3D printing technique includes a selective laser sintering technique, the basic molding process of which is: the powder feeding device conveys a certain amount of printing powder to the workbench surface, the scraper lays a layer of printing powder on the printing substrate, and the printing powder is sintered by laser to form a solid part.
In the powder spreading process, after the doctor blade finishes spreading the printing powder, part of the printing powder which cannot be used exists, and after the printing process is finished, the printing powder needs to be manually taken out and new printing powder is added. This operation has the following problems: the labor intensity of the manpower is high, and the efficiency is low; the problem of printing powder exposure exists in the taking out and adding of printing powder, the problem of potential safety hazard to personnel exists, and the environment and the quality of printing powder are influenced.
Referring to fig. 1, the present embodiment provides a 3D printing apparatus 200 including a print chamber 201 and a powder circulation system 100. The print pod 201 defines a sealed print chamber 202. The powder circulation system 100 includes a mounting member 10, a powder storage device 20, a molding device 30, a powder collecting member 40, a powder sieving member 50, a powder feeding member 60, and a powder spreading device 205.
Referring to fig. 2 to 4 in cooperation, the mount 10 is provided with a powder feeding port 11, a molding port 12 and a recovery port 13 which are sequentially arranged at intervals in the lateral direction X1. The mounting member 10 is connected to the printing chamber 201, for example, the bottom plate 203 of the printing chamber 201 is provided with a fitting hole 204, and the mounting member 10 is detachably mounted in the fitting hole 204, so that the powder circulation system 100 of the powder storage device 20 and the forming device 30 with different printing sizes can be replaced according to the printing requirements of different sized workpieces of the 3D printing apparatus 200.
Referring to fig. 2 to 4 in combination, powder storage device 20 includes a powder storage cylinder 21, a powder storage platform 22, and a powder storage drive member 23. The powder storage cylinder 21 is connected to one side of the mounting part 10, which is far away from the printing cavity 202, the powder storage cylinder 21 defines a powder storage cavity 211, the powder storage cavity 211 is communicated to the printing cavity 202 through the powder feeding port 11, the powder storage substrate is slidably matched in the powder storage cavity 211, the powder storage substrate is used for storing printing powder with the inner wall of the powder storage cylinder 21, the powder storage driving part 23 is connected with the powder storage substrate and is used for driving the powder storage substrate to move along the powder storage cavity 211, and therefore a certain amount of printing powder can be exposed to one side of the mounting part 10, which is far away from the powder storage cylinder 21, from the powder feeding port 11.
Referring to fig. 2 to 4 in combination, the forming device 30 includes a forming cylinder 31, a forming table 32, and a forming drive 33. The molding cylinder 31 is connected to a side of the mounting member 10 facing away from the printing cavity 202, the molding cylinder 31 defines a molding cavity 311, the molding cavity 311 is communicated to the printing cavity 202 through the molding opening 12, the molding substrate is slidably matched in the molding cavity 311, the molding substrate is used for bearing printing powder, and the molding driving member 33 is connected with the molding substrate and is used for driving the molding substrate to move along the molding cavity 311. Alternatively, in the present embodiment, the forming cylinder 31 and the powder storage cylinder 21 are integrally connected, so that the forming device 30 and the powder storage device 20 can be easily removed after printing is completed, and the removal of the workpiece is completed. In other embodiments, the molding cylinder 31 and the powder storage cylinder 21 may be separate cylinders, so that the molding device 30 can be taken and placed separately.
The powder collecting part 40 is connected to the mounting part 10 and is communicated with the printing cavity 202 through the recovery port 13, and the recovery port 13 is used for conveying excessive printing powder to the powder collecting part 40 in the powder spreading process. The powder sieving member 50 is connected to the powder collecting member 40, and the powder sieving member 50 is used for receiving and sieving printing powder to form recovered powder. The powder feeding member 60 is connected to the powder sieving member 50 and is used for receiving the recovered powder, and the powder feeding member 60 is also used for feeding the recovered powder to the powder storage device 20.
Referring to fig. 1, the powder spreading device 205 is movably disposed in the printing chamber 202, and the powder spreading device 205 may be specifically configured as a doctor blade or a powder spreading roller. When the 3D printing device 200 works, the powder spreading device 205 moves along the transverse direction X1 to push the printing powder exposed from the powder feeding port 11 to the forming substrate, so that the printing powder is spread on the forming substrate, and the redundant printing powder enters the powder collecting piece 40 from the recovery port 13 under the driving of the powder spreading device 205. The printing powder entering the powder collecting member 40 falls into the powder sieving member 50, the powder sieving member 50 can sieve the printing powder to form recyclable recycling powder, and the recycling powder is conveyed into the powder conveying member 60. The powder feeder 60 can convey the reclaimed powder into the powder storage apparatus 20, thereby completing the recycling of the reclaimed powder.
According to the 3D printing apparatus 200 of this embodiment, the steps of recycling, screening, and reusing the remaining printing powder in the printing process can be completed in the closed system, without the need of manually frequently taking and placing the powder collecting member 40, the manual operation frequency and the manual operation labor intensity are greatly reduced, the printing powder is not exposed in the workshop environment, the protection effect on the workshop environment is ensured, the possibility of recontamination of the recycling powder in the conveying process is avoided, the quality of the recycling powder is ensured, and the potential safety hazard problem of personnel is reduced. In addition, the powder feeding port 11, the forming port 12 and the recycling port 13 in the embodiment are all integrated on the mounting piece 10, so that the powder paving device 205 can realize the paving and recycling of the printing powder in a short distance, the integration level of the 3D printing device 200 is improved, and the recycling efficiency of the printing powder is improved.
Referring to fig. 4, in the present embodiment, the size of the recovery opening 13 along the longitudinal direction X2 is larger than the size of the forming opening 12 along the longitudinal direction X2, and the longitudinal direction X2 is perpendicular or diagonal to the transverse direction X1. When the powder spreading device 205 moves from the forming port 12 to the recovery port 13, part of the printing powder may move along the longitudinal direction X2 under the action of the powder spreading device 205, and the residual printing powder can enter the recovery piece under the drive of the powder spreading device 205 by enlarging the size of the recovery port 13 along the longitudinal direction X2, so that the recovery proportion of the printing powder is improved, and the manual operation is further reduced.
Referring to fig. 2 and 3, in the present embodiment, the powder collecting member 40, the powder sieving member 50 and the powder feeding member 60 are disposed on the same side of the mounting member 10 along the vertical direction Y, the powder feeding member 60 is disposed on the side of the powder collecting member 40 away from the mounting member 10 along the vertical direction Y, and the powder sieving member 50 is disposed between the powder collecting member 40 and the powder feeding member 60 along the vertical direction Y. In this way, the printing powder can be conveniently and sequentially operated among the powder collecting piece 40, the powder sieving piece 50 and the powder feeding piece 60 under the action of gravity, so that a power structure does not need to be additionally arranged to drive the printing powder to move, and the cost of the powder circulation system 100 is reduced. In other embodiments, the distribution directions of the powder collecting member 40, the powder sieving member 50 and the powder feeding member 60 may be oblique to the vertical direction Y.
Alternatively, the powder storage device 20, the forming device 30 and the powder collecting part 40 are arranged on the same side of the mounting part 10 along the vertical direction Y. In this way, the powder storage device 20, the forming device 30, the powder collecting piece 40, the powder sieving piece 50 and the powder feeding piece 60 are connected to one side of the mounting piece 10, which is away from the printing cavity 202, so that miniaturization and integration of the powder circulation system 100 are facilitated, the powder circulation system 100 is convenient to install in the printing cabin 201 with different sizes, and the printing requirements of the 3D printing equipment 200 on workpieces with different sizes are met.
Referring to fig. 2 and 3, in the present embodiment, the 3D printing apparatus 200 further includes two communicating pipes 82, one communicating pipe 82 is connected to one side of the powder collecting member 40 and the powder sieving member 50, and the other communicating pipe 82 is connected to the other side of the powder sieving member 50 and the powder feeding member 60. In this way, the powder collecting member 40, the powder sieving member 50 and the powder feeding member 60 can be relatively independent, so that an operator can conveniently replace or clean one or more of the powder collecting members and the powder feeding member according to actual requirements.
Referring to fig. 2 and 3, in the present embodiment, the powder circulation system 100 further includes a conveying member 70, one end of the conveying member 70 is connected to the powder feeding member 60, and the other end of the conveying member 70 is connected to an end of the powder storage device 20 near the powder feeding port 11. The space of the powder storage cavity 211 is usually provided with a certain margin, and the conveying member 70 is communicated to one end of the powder storage device 20 close to the powder feeding port 11, so that the communication port between the conveying member 70 and the powder storage cavity 211 can be ensured not to be blocked by printing powder in the powder storage device 20, and the recovered powder can be smoothly conveyed into the powder storage cavity 211 through the conveying member 70, and the replenishment of the printing powder in the powder storage cavity 211 is realized.
Alternatively, in the present embodiment, the conveying member 70 includes a powder discharge pipe 71, a powder feed pipe 72, and a powder feed pipe 73. The powder discharge tube 71 is connected to the powder feeder 60 and is provided at one end of the powder feeder 60 in the longitudinal direction X2. The powder inlet pipe 72 communicates with one side of the powder storage device 20 in the longitudinal direction X2. The powder feeding pipe 73 is arranged at one side of the powder storage device 20 along the longitudinal direction X2, and two ends of the powder feeding pipe 73 are respectively communicated with the powder outlet pipe 71 and the powder inlet pipe 72. In this way, it is possible to facilitate the use of the space of the powder circulation system 100 on one side in the longitudinal direction X2 and to improve the installation integration of the conveying member 70.
Referring to fig. 5, in the present embodiment, the powder collecting member 40 is provided with a first guiding section 41, the first guiding section 41 is connected to the powder sieving member 50, and the size of the first guiding section 41 along the longitudinal direction X2 is gradually reduced from the recovering opening 13 toward the powder sieving member 50 so as to guide the printing powder to be conveyed into the powder sieving member 50. By providing the first guide section 41, the possibility that the recovered printing powder is accumulated and jammed on the powder collecting member 40 can be reduced, and the smoothness of conveying the printing powder from the powder collecting member 40 to the powder sieving member 50 can be ensured.
Referring to fig. 5, in the present embodiment, the powder sieving member 50 includes a powder sieving housing 51 and a powder sieving structure 512, two sides of the powder sieving housing 51 are respectively communicated with the powder collecting member 40 and the powder feeding member 60, the powder sieving structure 512 is disposed in the powder sieving housing 51, and the powder sieving structure 512 is used for allowing printing powder with a predetermined particle size range to pass through and be conveyed to the powder feeding member 60. The preset particle size range may be set according to the particle size range of the actual printing powder.
Optionally, the screen powder housing 51 may be configured as a screen and an exciting motor, the printing powder falls onto the screen after entering the screen powder housing 51, and the exciting motor drives the screen to vibrate, so that the printing powder in a preset particle size range passes through the screen and is delivered to the powder feeding member 60, while the printing powder (such as small sintered particles in the printing process) not in the preset particle size range is retained at the screen, and the printing powder can be delivered through other pipelines, or retained at the screen, and the screen powder feeding member 50 can be replaced manually or by a machine at regular time.
Referring to fig. 5, in the present embodiment, the powder feeding member 60 includes a powder feeding housing 61 and a spiral powder feeding portion 62, the powder feeding housing 61 is used for accommodating the recovered powder, the powder feeding housing 61 is communicated with the powder sieving member 50, the spiral powder feeding portion 62 is rotatably disposed in the powder feeding housing 61, and the spiral powder feeding portion 62 is used for driving the printing powder in the powder feeding housing 61 to be conveyed to the powder storage device 20. Thus, the spiral powder feeding portion 62 is provided with power to overcome the gravity of the printing powder and move the printing powder into the powder storage device 20, thereby completing the recovery of the printing powder. Alternatively, the screw feeding portion 62 may be specifically provided as a screw.
In other embodiments, the powder feeding member 60 can also drive the reclaimed powder to the powder storage device 20 by the airflow.
Referring to fig. 5, in the present embodiment, the powder circulation system 100 further includes a powder supply device 81, and the powder supply device 81 is connected to the powder feeding member 60 and is used for delivering new printing powder to the powder storage device 20. By additionally arranging the powder supply device 81 to be communicated with the powder feeding part 60, new printing powder can be replenished without further reducing the labor intensity by manual operation, and the supply of the printing powder is ensured not to be influenced by the environment.
Optionally, referring to fig. 5, one end of the powder feeding member 60 along the longitudinal direction X2 is connected to the conveying member 70, the other end of the powder feeding member 60 along the longitudinal direction X2 is connected to the powder feeding device 81, and the middle part of the powder feeding member 60 is connected to the powder sieving member 50, so that the actions of recovering printing powder, conveying the printing powder, receiving new printing powder and the like of the powder feeding member 60 are independent and do not interfere with each other, and the operation reliability of the powder circulation system 100 is ensured.
Referring to fig. 2 and 3, in the present embodiment, the powder circulation system 100 further includes a first substrate 91 and a second substrate 92, the fixed end of the powder storage driving member 23 is fixed to the first substrate 91, and the fixed end of the molding driving member 33 is fixed to the second substrate 92. The powder circulation system 100 further includes guide devices 93, the guide devices 93 are disposed on both sides of the powder circulation system 100 in the longitudinal direction X2, the guide devices 93 are disposed between the first base plate 91 and the powder storage cylinder 21, and the guide devices 93 are disposed between the second base plate 92 and the forming cylinder 31.
Alternatively, referring to fig. 2 and 3, the cylinder is provided with two guide gears 931 disposed at intervals along the transverse direction X1, the first base plate 91 is provided with two first guide racks 932 disposed at intervals along the transverse direction X1, the first guide gears 931 extend along the vertical direction Y, the two first guide racks 932 are disposed on both sides of the two guide gears 931 along the transverse direction X1, each first guide rack 932 is engaged with one guide gear 931, the second base plate 92 is provided with a second guide rack 933, the second guide gears 931 extend along the vertical direction Y, the second guide rack 933 is disposed between the two guide gears 931, and the second guide gears 931 are engaged with the two guide gears 931 on both sides of the transverse direction X1, respectively. The cylinder body is further provided with two slide rails 934 arranged at intervals along the transverse direction X1, the two slide rails 934 extend along the vertical direction Y, the two slide rails 934 are arranged on two sides of the two first guide racks 932 along the transverse direction X1, each first guide rack 932 is respectively provided with a slide block 935, and each slide block 935 is in sliding fit with one slide rail 934.
When the first base plate 91 is dismounted from the cylinder to dismount the powder storage platform 22 and the powder storage driving member 23, the cooperation of the slide rail 934 and the slide block 935 and the engagement of the two first guide racks 932 and the two guide gears 931 can play a role in guiding the movement of the first base plate 91 along the vertical direction Y, and when the second base plate 92 is dismounted from the cylinder to dismount the forming platform 32 and the forming driving member 33, the engagement of the second guide racks 933 and the two guide gears 931 can play a role in guiding the movement of the second base plate 92 along the vertical direction Y.
The above embodiments are only for illustrating the technical solution of the present application and not for limiting, and although the present application has been described in detail with reference to the above preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present application may be modified or substituted without departing from the spirit and scope of the technical solution of the present application.
Claims (10)
1. A powder circulation system, comprising:
the mounting piece is provided with a powder feeding port, a forming port and a recycling port which are sequentially arranged at intervals along the transverse direction;
the powder storage device is connected to the mounting piece and communicated with the powder feeding port and is used for storing printing powder;
the forming device is connected to the mounting piece and communicated with the forming opening, and is used for bearing the printing powder;
the powder spreading device is used for spreading the printing powder exposed from the powder feeding port to the forming device and pushing the surplus printing powder to the recycling port;
the powder collecting piece is connected to the mounting piece and communicated with the recovery port, and is used for recovering the excessive printing powder in the powder spreading process;
the powder feeding part is communicated with the powder collecting part and used for receiving the printing powder and conveying the printing powder to the powder storage device.
2. A powder circulation system according to claim 1, characterized in that:
the powder circulation system further comprises a powder screening piece, the powder screening piece is communicated with the powder collecting piece and the powder conveying piece, and the powder screening piece is used for receiving and screening the printing powder and conveying the screened printing powder to the powder conveying piece.
3. A powder circulation system according to claim 2, characterized in that:
the powder collecting piece, the powder screening piece and the powder feeding piece are arranged on the same side of the mounting piece along the vertical direction, the powder feeding piece is arranged on one side of the powder collecting piece, which is away from the mounting piece, along the vertical direction, and the powder screening piece is arranged between the powder collecting piece and the powder feeding piece along the vertical direction.
4. A powder circulation system according to claim 2, characterized in that:
the powder circulation system further comprises two communicating pipes, one communicating pipe is communicated with one side of the powder collecting piece and one side of the powder sieving piece, and the other communicating pipe is communicated with the other side of the powder sieving piece and the powder feeding piece.
5. A powder circulation system according to claim 2, characterized in that:
the powder screening piece comprises a powder screening shell and a powder screening structure, wherein two sides of the powder screening shell are respectively communicated with the powder collecting piece and the powder conveying piece, the powder screening structure is arranged in the powder screening shell, and the powder screening structure is used for allowing printing powder with a preset particle size range to pass through and be conveyed to the powder conveying piece.
6. A powder circulation system according to claim 1, characterized in that:
the powder circulation system further comprises a conveying piece, one end of the conveying piece is communicated with the powder conveying piece, and the other end of the conveying piece is communicated to one end, close to the powder conveying port, of the powder storage device.
7. A powder circulation system according to claim 6, characterized in that:
the conveying member includes:
the powder outlet pipe is communicated with the powder feeding piece and is arranged at one end of the powder feeding piece along the longitudinal direction;
the powder inlet pipe is communicated with one side of the powder storage device along the longitudinal direction;
the powder feeding pipe is arranged on one side of the powder storage device along the longitudinal direction, and two ends of the powder feeding pipe are respectively communicated with the powder outlet pipe and the powder inlet pipe.
8. A powder circulation system according to claim 1, characterized in that:
the powder collecting piece is provided with a first guide section, the first guide section is communicated with the powder conveying piece, and the size of the first guide section along the longitudinal direction gradually decreases from the recovery port towards the powder conveying piece so as to guide the printing powder to be conveyed into the powder conveying piece.
9. A powder circulation system according to claim 1, characterized in that:
the powder feeding part comprises a powder feeding shell and a spiral powder feeding part, wherein the powder feeding shell is used for accommodating printing powder, the powder feeding shell is communicated with the powder collecting part, the spiral powder feeding part is rotatably arranged in the powder feeding shell, and the spiral powder feeding part is used for driving the printing powder in the powder feeding shell to be conveyed to the powder storage device.
10. A 3D printing apparatus, comprising:
a print pod defining a print cavity;
a powder circulation system as claimed in any one of claims 1 to 9, the mount of the powder circulation system being connected to the print cartridge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322290437.0U CN220499966U (en) | 2023-08-24 | 2023-08-24 | Powder circulation system and 3D printing equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322290437.0U CN220499966U (en) | 2023-08-24 | 2023-08-24 | Powder circulation system and 3D printing equipment |
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| CN220499966U true CN220499966U (en) | 2024-02-20 |
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| CN202322290437.0U Active CN220499966U (en) | 2023-08-24 | 2023-08-24 | Powder circulation system and 3D printing equipment |
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| CN (1) | CN220499966U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117922003A (en) * | 2024-03-21 | 2024-04-26 | 东莞理工学院 | Selective laser sintering printer |
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2023
- 2023-08-24 CN CN202322290437.0U patent/CN220499966U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117922003A (en) * | 2024-03-21 | 2024-04-26 | 东莞理工学院 | Selective laser sintering printer |
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