CN114311667A - Continuous powder supply and powder laying system and additive manufacturing method thereof - Google Patents
Continuous powder supply and powder laying system and additive manufacturing method thereof Download PDFInfo
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- CN114311667A CN114311667A CN202111646953.1A CN202111646953A CN114311667A CN 114311667 A CN114311667 A CN 114311667A CN 202111646953 A CN202111646953 A CN 202111646953A CN 114311667 A CN114311667 A CN 114311667A
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- 239000000843 powder Substances 0.000 title claims abstract description 164
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 20
- 239000000654 additive Substances 0.000 title claims abstract description 17
- 230000000996 additive effect Effects 0.000 title claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 39
- 238000007639 printing Methods 0.000 claims abstract description 24
- 239000007921 spray Substances 0.000 claims abstract description 13
- 238000007493 shaping process Methods 0.000 claims abstract description 12
- 238000003860 storage Methods 0.000 claims description 29
- 238000003892 spreading Methods 0.000 claims description 18
- 230000007480 spreading Effects 0.000 claims description 18
- 238000005538 encapsulation Methods 0.000 claims description 17
- 238000007790 scraping Methods 0.000 claims description 13
- 238000012856 packing Methods 0.000 claims description 11
- 238000012546 transfer Methods 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 238000004806 packaging method and process Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 238000012360 testing method Methods 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 4
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- 235000017491 Bambusa tulda Nutrition 0.000 description 4
- 241001330002 Bambuseae Species 0.000 description 4
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 4
- 239000011425 bamboo Substances 0.000 description 4
- 230000008676 import Effects 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 230000001174 ascending effect Effects 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000004568 cement Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
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Abstract
The invention relates to the technical field of additive manufacturing equipment, in particular to a continuous powder supply and powder laying system and an additive manufacturing method thereof, wherein the continuous powder supply and powder laying system comprises a rack, the top of the rack is fixedly connected with an X-direction guide rail beam, a Y-direction guide rail beam is connected onto the X-direction guide rail beam in a sliding manner, and a printing spray head system is connected onto the Y-direction guide rail beam in a sliding manner; the powder system is spread to Y direction guide rail roof beam below is equipped with in succession to supply the powder, and the powder system is spread in succession includes vertical pay-off structure, and vertical pay-off structure one side is equipped with stores up the powder case, stores up powder bottom of the case portion and vertical pay-off structure bottom intercommunication, and vertical pay-off structure opposite side is equipped with the shaping room, and vertical pay-off structure top is equipped with the transportation structure of carrying the material to the shaping room, and the bottom surface height-adjustable of shaping room. The invention solves the problems that the prior art is difficult to continuously supply powder and the spray head is easy to block, and improves the possibility of the powder additive manufacturing technology in the manufacturing of large-scale structures.
Description
Technical Field
The invention relates to the technical field of additive manufacturing equipment, in particular to a continuous powder supply and powder laying system and an additive manufacturing method thereof.
Background
Powder additive manufacturing techniques produce precise structures with complex geometries by selectively depositing a binder liquid (or "ink") onto a powder bed to solidify the powder in its spray area. The binder is pushed out through a thermal foaming or piezo-electric nozzle and then formed into droplets that are selectively sprayed onto the powder bed to bind the powder particles to each other, and is characterized by a wide range of potentially useful powder materials, including ceramics, polymers, metals, cements, and composites. The technology has great potential in the construction industry, and will make great and positive contribution to the construction industry.
For the existing powder additive manufacturing technology, the powder supply mode mainly comprises a powder supply cylinder ascending type and a powder storage box descending type at present. Powder supply cylinder rising type material increase manufacturing equipment comprises a working cylinder and a powder supply cylinder. When powder spreading and printing are carried out, after the binder is sprayed and bonded, the printing platform of the working cylinder descends by one layer, the powder supply cylinder ascends by one layer, and the roller and the scraper take out the powder material from the powder supply cylinder and spread the powder material on the printing platform. The additive manufacturing equipment with the falling powder storage box is characterized in that a second-level powder bin is arranged on a printing shaft, an external powder storage box is connected with the second-level powder bin, the powder storage box in the front drops powder along with the movement of the printing shaft, and a powder spreading roller or a scraping blade in the back spreads powder.
The prior art has the following defects: the existing powder supply cylinder lifting type powder supply mode has a small working area, cannot realize continuous powder supply, and the maximum volume of a one-step forming structure is the volume of one powder supply cylinder, so that the powder supply cylinder lifting type powder supply mode is difficult to be applied to a large-scale structure; the existing powder storage box falling type powder supply mode has the defects that the size of the powder storage box is limited, continuous powder supply cannot be realized, and the spray head is easily blocked by dust generated by powder falling, so that the construction requirement of a large-scale structure cannot be met.
Disclosure of Invention
The invention aims to provide a continuous powder supply and powder laying system and an additive manufacturing method thereof, which are used for solving the problems that continuous powder supply is difficult and a spray head is easy to block in the prior art and improving the possibility of a powder additive manufacturing technology in large-scale structure manufacturing.
In order to achieve the purpose, the invention provides the following scheme:
a continuous powder supply and spreading system comprises a rack, wherein an X-direction guide rail beam is fixedly connected to the top of the rack, a Y-direction guide rail beam is connected to the X-direction guide rail beam in a sliding manner, and a printing spray head system is connected to the Y-direction guide rail beam in a sliding manner;
y direction guide rail roof beam below is equipped with and supplies powder shop powder system in succession, it includes vertical pay-off structure to supply powder shop powder system in succession, vertical pay-off structure one side is equipped with stores up the powder case, store up powder bottom of the case portion with vertical pay-off structure bottom intercommunication, vertical pay-off structure opposite side is equipped with the shaping room, vertical pay-off structure top be equipped with carry the material extremely the transportation structure of shaping room, the bottom surface height-adjustable of shaping room.
Preferably, vertical pay-off structure include bottom one side with the hob conveyor of storage powder box bottom intercommunication, hob conveyor is including the encapsulation casing, the inside rotation of encapsulation casing is connected with a plurality of augers, and is a plurality of the equidistant range of auger, encapsulation casing bottom one side is equipped with the import, the import with storage powder box intercommunication, the auger outside is equipped with a cylinder section of thick bamboo, a cylinder section of thick bamboo with encapsulation casing fixed connection, the structure setting of transporting is in encapsulation casing top, the transmission of auger bottom is connected with the drive division.
Preferably, the transport structure is including establishing the storehouse is kept in storage to the powder at encapsulation casing top, the storehouse fit in storage is kept in storage to the powder is equipped with the doctor-bar, the doctor-bar both ends with the encapsulation casing rotates to be connected, doctor-bar one end transmission is connected with scraper blade drive division, it is connected with shop's powder gyro wheel to rotate on the Y direction guide rail roof beam, shop's powder gyro wheel axis with Y direction guide rail roof beam length direction is parallel.
Preferably, the forming chamber includes the forming bin, the inside work platform that is equipped with vertical lift in forming bin, work platform bottom fixedly connected with Z direction electric lift cylinder's piston end, Z direction electric lift cylinder with frame fixed connection.
Preferably, the printing nozzle system comprises an array printing nozzle and a nozzle cleaning device, and the array printing nozzle and the nozzle cleaning device are in sliding fit with the guide rail beam in the Y direction.
The additive manufacturing method of the continuous powder supply and powder laying system based on the technical scheme specifically comprises the following steps:
putting the materials, and putting the powder materials into a powder storage box;
conveying the powder material to a transfer structure by a vertical feeding structure;
a material lay-up, wherein the transfer structure conveys the powder material to the forming chamber and lays flat to the bottom surface of the forming chamber;
a bonding process, wherein the forming chamber descends by one height position, and the printing spray head system performs selective ink-jet bonding on powder paved on the bottom surface of the forming chamber;
and repeating the processes of material conveying, material tiling and bonding until the test piece is molded.
The invention has the following technical effects:
according to the invention, the powder material is added into the powder storage box, the powder material enters the vertical feeding structure under the action of gravity, the vertical feeding structure feeds the powder material into the transfer structure, and the transfer structure flatly spreads the powder material at the bottom of the forming chamber, so that continuous powder supply and powder spreading of the powder can be realized, the problems that the spray head is blocked and the forming size is limited due to the falling powder supply and ascending powder supply of the powder supply cylinder of the powder storage box can be effectively solved, and the application of the powder additive manufacturing method in a large-size structure is facilitated.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of a continuous powder supply and spreading system; (ii) a
FIG. 3 is another view structure diagram of the continuous powder feeding and spreading system;
FIG. 4 is a schematic structural view of a screw conveyor;
FIG. 5 is a schematic diagram of the matching structure of the packing auger and the cylindrical barrel.
Wherein, 1, printing a spray head system; 11. an array printing nozzle; 12. a nozzle cleaning device; 2. a Y-direction guide rail beam; 3. an X-direction guide rail beam; 4. a Z-direction electric lifting cylinder; 5. a frame; 6. a continuous powder supply and spreading system; 61. a powder storage box; 62. a screw rod conveying device; 621. a packing auger; 622. a cylindrical barrel; 623. a package housing; 624. a stepping motor; 625. an inlet; 626. temporarily storing the powder in a bin; 63. spreading a powder roller; 64. scraping a blade; 65. a forming chamber; 651. a molding bin; 652. a working platform; 66. a squeegee stepper motor; 67. a belt.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Referring to fig. 1-5, the invention provides a continuous powder supply and spreading system, which comprises a frame 5, wherein the top of the frame 5 is fixedly connected with an X-direction guide rail beam 3, the X-direction guide rail beam 3 is slidably connected with a Y-direction guide rail beam 2, and the Y-direction guide rail beam 2 is slidably connected with a printing spray head system 1;
the powder system 6 is spread to 2 below being equipped with of Y direction guide rail roof beams in succession confession powder, and the powder system 6 is spread to the confession powder in succession includes vertical pay-off structure, and vertical pay-off structure one side is equipped with stores up powder case 61, stores up powder case 61 bottom and vertical pay-off structure bottom intercommunication, and vertical pay-off structure opposite side is equipped with shaping chamber 65, and vertical pay-off structure top is equipped with carries the material to the structure of transporting of shaping chamber 65, and the bottom surface height-adjustable of shaping chamber 65.
According to the invention, the powder material is added into the powder storage box 61, the powder material enters the vertical feeding structure under the action of gravity, the vertical feeding structure feeds the powder material into the transfer structure, the transfer structure flatly spreads the powder material at the bottom of the forming chamber 65, so that continuous powder supply and powder spreading of the powder can be realized, the problems that the spray head is blocked and the forming size is limited due to the falling powder supply and ascending powder supply of the powder supply cylinder of the powder storage box can be effectively solved, and the application of the powder additive manufacturing method in a large-size structure is facilitated.
Further optimize the scheme, vertical pay-off structure includes bottom one side and the hob conveyor 62 that stores up powder case 61 bottom intercommunication, hob conveyor 62 is including encapsulation casing 623, the inside rotation of encapsulation casing 623 is connected with a plurality of augers 621, interval arrangement such as a plurality of augers 621, encapsulation casing 623 bottom one side is equipped with import 625, import 625 and storage powder case 61 intercommunication, the auger 621 outside is equipped with a cylinder section of thick bamboo 622, a cylinder section of thick bamboo 622 and encapsulation casing 623 fixed connection, the transport structure sets up at encapsulation casing 623 top, auger 621 bottom transmission is connected with the drive division. The drive part can select a stepping motor 624, an output shaft of the stepping motor 624 is in shaft connection with the packing auger 621, and the drive part can also select a mode of driving the packing auger 621 by a synchronous belt.
By controlling the rotation of the stepping motor 624, the stepping motor 624 drives the packing auger 621 to rotate, and under the friction force between the packing auger 621 and the cylindrical barrel 622, the powder material is lifted into the transfer structure through a gap between the packing auger 621 and the cylindrical barrel 622.
According to a further optimized scheme, the transferring structure comprises a powder temporary storage bin 626 arranged at the top of the packaging shell 623, a scraping blade 64 is arranged in the powder temporary storage bin 626 in a matched mode, two ends of the scraping blade 64 are rotatably connected with the packaging shell 623, one end of the scraping blade 64 is connected with a scraping blade driving portion in a transmission mode, a powder paving roller 63 is rotatably connected onto the Y-direction guide rail beam 2, and the axis of the powder paving roller 63 is parallel to the length direction of the Y-direction guide rail beam 2. The scraper driving part adopts a scraper stepping motor 66, the scraper stepping motor 66 is fixedly connected with the packaging shell 623, and an output shaft of the packaging shell 623 is in transmission connection with the end part of the scraper 64 through a belt 67.
The scraper stepping motor 66 is controlled to rotate, the scraper stepping motor 66 drives the scraper 64 to rotate, then powder in the powder temporary storage bin 626 is scraped to a working platform 652 in the forming bin 651, the powder paving roller 63 is connected to the Y-direction guide rail beam 2 of the material increase equipment in a rotating mode through a bolt, and when the Y-direction guide rail beam 2 moves along the X direction, the powder paving roller 63 rolls and the Y-direction guide rail beam 2 moves to roll the powder scraped by the scraper 64 to the working platform 652 to be paved.
Further optimize the scheme, the molding chamber 65 includes the molding bin 651, the inside work platform 652 that is equipped with vertical lift of molding bin 651, the piston end of Z direction electric lift cylinder 4 of fixedly connected with in work platform 652 bottom, Z direction electric lift cylinder 4 and frame 5 fixed connection.
The Z-direction electric lifting cylinder 4 drives the working platform 652 to descend by a certain height, and the printing nozzle system 1 selectively performs inkjet bonding on the powder which is already laid on the working platform 652.
According to a further optimized scheme, the printing nozzle system 1 comprises an array type printing nozzle 11 and a nozzle cleaning device 12, wherein the array type printing nozzle 11 and the nozzle cleaning device 12 are in sliding fit with the Y-direction guide rail beam 2.
A continuous powder supply and powder laying system additive manufacturing method is based on the technical scheme and specifically comprises the following steps:
placing the material, placing the powder material into a powder storage box 61;
during material conveying, a stepping motor 624 in the screw rod conveying device 62 drives an auger 621 to rotate, and under the friction force between the auger and the cylinder wall of the cylindrical cylinder 622, powder materials are lifted to a powder temporary storage bin 626 through a gap between the auger and the cylinder wall;
the materials are spread flatly, one end of the scraping piece 64 is connected with a motor in a shaft mode, the motor drives the scraping piece 64 to rotate, and the scraping piece 64 takes the powder out of the powder temporary storage bin 626 of the screw rod conveying device 62; rolling and paving the powder on the working platform 652 by the self rolling of the powder paving roller 63 and the movement of the guide rail beam 2 in the Y direction;
in the bonding process, the Z-direction electric lifting cylinder 4 drives the working platform 652 to descend by a certain height, and the printing nozzle system 1 selectively performs ink-jet bonding on the powder paved on the working platform 652;
and repeating the processes of material conveying, material tiling and bonding until the test piece is molded.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.
Claims (6)
1. The continuous powder supply and spreading system is characterized by comprising a rack (5), wherein an X-direction guide rail beam (3) is fixedly connected to the top of the rack (5), a Y-direction guide rail beam (2) is connected to the X-direction guide rail beam (3) in a sliding manner, and a printing spray head system (1) is connected to the Y-direction guide rail beam (2) in a sliding manner;
y direction guide rail roof beam (2) below is equipped with supplies powder shop powder system (6) in succession, supply powder shop powder system (6) in succession including vertical pay-off structure, vertical pay-off structure one side is equipped with stores up powder case (61), store up powder case (61) bottom with vertical pay-off structure bottom intercommunication, vertical pay-off structure opposite side is equipped with shaping chamber (65), vertical pay-off structure top be equipped with carry the material extremely the transport structure of shaping chamber (65), the bottom surface height-adjustable festival of shaping chamber (65).
2. The continuous powder supply and spreading system according to claim 1, wherein the vertical feeding structure comprises a bottom side and a screw rod conveying device (62) communicated with the bottom of the powder storage box (61), the screw rod conveying device (62) comprises an encapsulation shell (623), the encapsulation shell (623) is internally connected with a plurality of packing augers (621) in a rotating manner, the packing augers (621) are arranged at equal intervals, one side of the bottom of the encapsulation shell (623) is provided with an inlet (625), the inlet (625) is communicated with the powder storage box (61), a cylindrical barrel (622) is arranged on the outer side of the packing augers (621), the cylindrical barrel (622) is fixedly connected with the encapsulation shell (623), the transferring structure is arranged at the top of the encapsulation shell (623), and the bottom end of the packing augers (621) is connected with a driving part in a transmission manner.
3. The continuous powder supplying and spreading system according to claim 2, wherein the transferring structure comprises a powder temporary storage bin (626) arranged at the top of the packaging shell (623), a scraping blade (64) is arranged in the powder temporary storage bin (626) in a matched mode, two ends of the scraping blade (64) are rotatably connected with the packaging shell (623), one end of the scraping blade (64) is in transmission connection with a scraping blade driving portion, a powder spreading roller (63) is rotatably connected to the Y-direction guide rail beam (2), and the axis of the powder spreading roller (63) is parallel to the length direction of the Y-direction guide rail beam (2).
4. The continuous powder supplying and spreading system of claim 1, wherein the forming chamber (65) comprises a forming chamber (651), a vertically lifting working platform (652) is arranged in the forming chamber (651), the bottom of the working platform (652) is fixedly connected with a piston end of a Z-direction electric lifting cylinder (4), and the Z-direction electric lifting cylinder (4) is fixedly connected with the frame (5).
5. The continuous powder supply and spreading system according to claim 1, wherein the printing nozzle system (1) comprises an array printing nozzle (11) and a nozzle cleaning device (12), and the array printing nozzle (11) and the nozzle cleaning device (12) are in sliding fit with the Y-direction guide rail beam (2).
6. An additive manufacturing method of a continuous powder supply and powder spreading system, which is based on any one of claims 1 to 5, and comprises the following steps:
placing the material, placing the powder material into a powder storage box (61);
conveying the powder material to a transfer structure by a vertical feeding structure;
-a material lay-up, the transfer structure conveying the powder material to the forming chamber (65) and laying flat to a bottom surface of the forming chamber (65);
a bonding process, wherein the forming chamber (65) is lowered by one height, and the printing spray head system (1) performs selective ink-jet bonding on powder which is already laid on the bottom surface of the forming chamber (65);
and repeating the processes of material conveying, material tiling and bonding until the test piece is molded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111646953.1A CN114311667A (en) | 2021-12-30 | 2021-12-30 | Continuous powder supply and powder laying system and additive manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111646953.1A CN114311667A (en) | 2021-12-30 | 2021-12-30 | Continuous powder supply and powder laying system and additive manufacturing method thereof |
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| Publication Number | Publication Date |
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| CN114311667A true CN114311667A (en) | 2022-04-12 |
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| CN202111646953.1A Pending CN114311667A (en) | 2021-12-30 | 2021-12-30 | Continuous powder supply and powder laying system and additive manufacturing method thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204773600U (en) * | 2015-06-03 | 2015-11-18 | 武汉映未三维科技有限公司 | Desktop formula inkjet 3D printer |
| CN111805900A (en) * | 2020-07-10 | 2020-10-23 | 珠海赛纳三维科技有限公司 | Powder supply device, three-dimensional forming equipment and powder supply method |
| CN112172139A (en) * | 2020-09-25 | 2021-01-05 | 河北工业大学 | Powder bonding 3D printing equipment and method for preparing complex geological model |
| CN112517923A (en) * | 2020-11-06 | 2021-03-19 | 西安交通大学 | Device and method for realizing multi-material additive manufacturing and forming based on SLM (Selective laser melting) equipment |
-
2021
- 2021-12-30 CN CN202111646953.1A patent/CN114311667A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204773600U (en) * | 2015-06-03 | 2015-11-18 | 武汉映未三维科技有限公司 | Desktop formula inkjet 3D printer |
| CN111805900A (en) * | 2020-07-10 | 2020-10-23 | 珠海赛纳三维科技有限公司 | Powder supply device, three-dimensional forming equipment and powder supply method |
| CN112172139A (en) * | 2020-09-25 | 2021-01-05 | 河北工业大学 | Powder bonding 3D printing equipment and method for preparing complex geological model |
| CN112517923A (en) * | 2020-11-06 | 2021-03-19 | 西安交通大学 | Device and method for realizing multi-material additive manufacturing and forming based on SLM (Selective laser melting) equipment |
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Application publication date: 20220412 |