CN212495399U - Powder paving device and system - Google Patents
Powder paving device and system Download PDFInfo
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- CN212495399U CN212495399U CN202020387834.3U CN202020387834U CN212495399U CN 212495399 U CN212495399 U CN 212495399U CN 202020387834 U CN202020387834 U CN 202020387834U CN 212495399 U CN212495399 U CN 212495399U
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- 239000000843 powder Substances 0.000 title claims abstract description 223
- 230000007480 spreading Effects 0.000 claims abstract description 56
- 239000000463 material Substances 0.000 claims abstract description 21
- 238000007599 discharging Methods 0.000 claims description 11
- 238000010410 dusting Methods 0.000 claims description 9
- 238000007639 printing Methods 0.000 abstract description 22
- 239000002184 metal Substances 0.000 abstract description 8
- 235000017166 Bambusa arundinacea Nutrition 0.000 abstract description 4
- 235000017491 Bambusa tulda Nutrition 0.000 abstract description 4
- 241001330002 Bambuseae Species 0.000 abstract description 4
- 235000015334 Phyllostachys viridis Nutrition 0.000 abstract description 4
- 239000011425 bamboo Substances 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 7
- 238000010146 3D printing Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
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Abstract
The utility model discloses a spread powder device and system contains and spreads powder board, a powder section of thick bamboo, goes out powder mouth, solenoid valve, feed slide, slide fixed block, quantitative slide. When the quantitative hole powder material spreading device is used, the electromagnetic valve controls the movement of the sliding bar and the quantitative sliding plate so as to realize that a fixed amount of powder materials in the quantitative hole are spread to a specified printing site. The utility model provides a pair of spread powder device and system can realize carrying out quantitative control to the metal powder that certain printing site was spread, and then realizes spreading the powder that carries out different kind powder at the different work area in same printing layer.
Description
Technical Field
The utility model relates to a 3D printing apparatus field, concretely relates to shop's powder device and system.
Background
3D printing technology has become a key technology in the modern advanced manufacturing field since the eighties of the last century. The selective laser melting process (SLM process for short) takes metal powder as a raw material, and adopts laser to scan layer by layer according to the cross section of a three-dimensional object so as to selectively melt and mold the metal powder in a region. The SLM technology has the advantages of fast forming, no need of a mold or a bracket, wide application range and the like, and is developed into the most important branch technology in the field of 3D printing.
The 3D printing equipment of traditional SLM technology generally needs the powder feeder to send metal powder to the printing work area, and the powder spreading devices such as scrapers scrape the printing work area to guarantee the uniformity of powder spreading at each position in the work area. However, with the development of the SLM process and the further expansion of the application field, the limitations of the powder spreading manner and the device of the conventional SLM process become more and more obvious. First, the powder feeding device of the conventional SLM process usually feeds metal powder, which is spread to a printing layer thickness, to a printing work area at one time, and then screeds the metal powder by a scraper to achieve theoretical spreading, so that the powder spreading amount of each printing site cannot be precisely controlled. Secondly, the types of materials for dusting are limited. In the above process, only one or one ratio of powder material can be spread on each printed layer. The method obviously cannot meet the increasing requirement of carrying out 3D printing and forming on the composite metal material.
To improve this problem, the method used in the prior art generally mixes at least two metal powders in advance according to a set ratio before feeding the powders, and then feeds the powders into a powder feeding device. Although such a powder feeding method can realize gradient change of metal material components between printing layers, it still cannot realize quantitative control of metal powder laid at a certain printing position, and cannot lay different kinds of powder materials in different working areas of the same printing layer.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a spread powder device and system to realize carrying out quantitative control to the powder that certain printing site was spread at 3D printing process, and then spread the powder that carries out different kinds of powder to the different work area in same printing layer.
The utility model provides a powder paving device, specifically, contain and spread powder board, powder section of thick bamboo, powder outlet, solenoid valve, slide bar, slide fixed block, quantitative slide, spread powder board contains and spreads powder board upper portion and spread powder board base, spread powder board upper portion and be equipped with a powder section of thick bamboo, spread powder board base and be equipped with the powder outlet; the electromagnetic valve is fixed on the powder paving plate base and controls the sliding bar to move; the sliding bar is connected with a sliding plate fixing block, and the sliding plate fixing block is connected with a quantitative sliding plate; the quantitative sliding plate penetrates through a gap between the upper part of the powder paving plate and the powder paving plate base, and is provided with a quantitative hole; when the quantitative sliding plate is located at the initial position, the quantitative hole is located at the bottom of the powder cylinder, and powder materials in the powder cylinder fall into the quantitative hole; when the slide bar is controlled by the electromagnetic valve until the quantitative slide plate is positioned at the powder discharging position, the quantitative hole is positioned at the top of the powder outlet, and the powder material in the quantitative hole falls from the powder outlet.
Preferably, the top of the powder outlet is positioned on the movement track of the quantitative sliding plate and outside the range of the inner wall of the powder cylinder.
Preferably, the powder spreading plate base is further provided with a spring, and the spring is connected with the quantitative sliding plate; when the quantitative sliding plate is positioned at the powder discharging position, the spring is in a stretching state; when the quantitative sliding plate is located at the initial position, the spring is reset to the initial state.
Preferably, the hole area of the quantitative hole is smaller than or equal to the sectional area of the powder outlet.
Preferably, the quantitative sliding plate is further provided with a limiting block, and the position of the quantitative sliding plate is locked when the quantitative sliding plate is located at the powder discharging position.
Preferably, the powder spreading device comprises a combination of one to five groups of electromagnetic valves, a slide bar, a slide plate fixing block and a quantitative slide plate.
The utility model also provides a spread powder system, have as above the shop's powder device of characteristic.
Preferably, the powder spreading system further comprises a motor and a guide rail, and the motor controls the powder spreading device to move along the guide rail in the x and y directions.
Preferably, the powder laying system comprises at least two powder laying devices.
Preferably, the at least two powder spreading devices respectively spread different powder materials.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a spread powder device and system can carry out quantitative control to the powder that specific printing position point was spread in the realization, can also spread the powder of spreading that carries out different kind of powder to the different work area in same printing layer.
Drawings
Fig. 1 is a schematic structural diagram of a powder laying device according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a longitudinal section of a powder laying device according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a quantitative slider according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a powder spreading device according to an embodiment of the present invention;
FIG. 5 is a schematic structural view of a longitudinal section of a second powder spreading device according to an embodiment of the present invention;
reference numerals: the powder spreading device comprises a powder spreading plate 1, a powder barrel 3, a powder outlet 4, an electromagnetic valve 5, a sliding bar 6, a sliding plate fixing block 7, a quantitative sliding plate 8, a powder spreading plate upper part 9, a powder spreading plate base 10, a quantitative hole 12, a spring 13 and a limiting block 14.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and specific examples, which should not be construed as limiting the invention.
Example one
As shown in fig. 1 and 2, the utility model provides a pair of powder paving device 1 contains and spreads powder board 2, a powder section of thick bamboo 3, goes out powder mouth 4, solenoid valve 5, slide bar 6, slide fixed block 7, quantitative slide 8, and powder paving board 2 contains powder paving board upper portion 9 and powder paving board base 10. Wherein, the upper part 9 of the powder paving plate is provided with a powder cylinder 3, the powder paving plate base 10 is provided with a powder outlet 4, and the electromagnetic valve 5 is fixed on the powder paving plate base 10. The solenoid valve 5 can control the movement of the slide bar 6. The slide bar 6 is connected with a slide plate fixing block 7, and the slide plate fixing block 7 is connected with a quantitative slide plate 8. When the electromagnetic valve 5 controls the slide bar 6 to move, the quantitative slide plate 8 can also be driven to move together. A gap is left between the upper powder spreading plate part 9 and the powder spreading plate base 10, and the gap just allows the quantitative sliding plate 8 to pass through. When the sliding bar 6 drives the quantitative sliding plate 8 to move, the gap plays a limiting role so as to ensure that the quantitative sliding plate 8 can reciprocate along a linear track.
As shown in fig. 3, the quantitative slide plate 8 is designed in a long plate shape, one end of the quantitative slide plate can be fixed with the slide plate fixing block 7, and the plate body is provided with a quantitative hole 12. The quantitative hole 12 is a through hole, the hole shape can be a round, square, rectangular and other geometric structure, and the hole area is smaller than or equal to the sectional area of the powder outlet 4. When the quantitative sliding plate 8 is located at the initial position, the quantitative hole 12 is located at the bottom of the powder cylinder 3, and powder materials in the powder cylinder 3 fall into the quantitative hole 12 and are located in a groove formed by the quantitative hole 12 and the upper surface of the powder laying plate base 10; the electromagnetic valve 5 pushes or pulls the slide bar 6 to control the quantitative slide plate 8 to move until the quantitative hole 12 is positioned at the top of the powder outlet 4. At the moment, the quantitative sliding plate 8 is positioned at the powder discharging position, and the powder material remained in the quantitative hole 12 falls from the powder outlet 4, so that powder paving at one site is completed.
Preferably, the top of the powder outlet 4 is located on the motion track of the quantitative sliding plate 8 and is located at a position outside the range of the inner wall of the powder cylinder 3. Thus, when the quantitative sliding plate 8 moves from the initial position to the powder-down position, the contact part of the inner wall of the powder cylinder 3 and the quantitative sliding plate 8 can scrape the upper surface of the quantitative hole 12 like a scraper, thereby ensuring that the powder amount of the powder material left in the quantitative hole 12 is consistent in each operation; when powder is spread at each position, the powder falling amount of each time of powder spreading is consistent, and the powder spreading amount of each position is also consistent.
Preferably, as shown in fig. 3, the quantitative sliding plate 8 is further provided with a limiting block 14, when the quantitative sliding plate 8 is located at the powder discharging position, the limiting block 14 is locally contacted with the powder spreading plate base 10, so that the position of the quantitative sliding plate 8 is locked, and the consistency and uniformity of each powder spreading process are improved.
In order to improve the powder spreading efficiency in the one-dimensional direction, the plate base 10 can be further provided with a plurality of groups of combinations of the electromagnetic valves 5, the sliding rods 6, the sliding plate fixing blocks 7 and the quantitative sliding plates 8, the combinations can be arranged in parallel, and meanwhile, the powder is spread on the sites in the one-dimensional direction, or the powder is selectively spread or not spread on a certain site. Preferably, the powder spreading device 1 may include a combination of one to five sets of electromagnetic valves 5, a slide bar 6, a slide plate fixing block 7 and a quantitative slide plate 8. The one to five groups of electromagnetic valves 5 are all fixed on the powder paving plate base 10 and can respectively control the corresponding sliding bars 6, and each group of sliding bars 6 can also respectively control the quantitative sliding plates 8 through the corresponding sliding plate fixing blocks 7. The one to five groups of quantitative sliding plates 8 can be simultaneously accommodated in a gap between the upper part 9 of the powder paving plate and the base 10 of the powder paving plate and are mutually limited, so that all the groups of quantitative sliding plates 8 can move along a straight line. The quantitative sliding plates 8 of one to five groups can be respectively controlled to be at the initial position or the powder discharging position through the electromagnetic valves 5 according to the powder laying design requirement.
Example two
As shown in fig. 4 and 5, a powder spreading device 1 comprises a powder spreading plate 2, a powder cylinder 3, a powder outlet 4, an electromagnetic valve 5, a slide bar 6, a slide plate fixing block 7, a quantitative slide plate 8 and a spring 13. The powder paving plate 2 comprises a powder paving plate upper part 9 and a powder paving plate base 10; the upper part 9 of the powder laying plate is provided with a powder cylinder 3, the base 10 of the powder laying plate is provided with a powder outlet 4 and is fixed with an electromagnetic valve 5. The spring 13 is arranged on the powder laying plate base 10. One end of the quantitative sliding plate 8 is connected with the sliding bar 6 through the sliding plate fixing block 7, and the other end is connected with the spring 13. When the electromagnetic valve 5 controls the slide bar 6 and the quantitative slide plate 8 to reciprocate, the spring 13 is driven to reciprocate. Specifically, when the quantitative sliding plate 8 is located at the powder feeding position, the spring 13 is in a stretching state; when the dosing slide 8 is in the initial position, the spring 13 is reset to the initial state. Preferably, when the solenoid valve 5 is energized, the spring 13 is in a stretched state under the action of a pulling force or a pushing force; when the electromagnetic valve 5 is powered off, the spring 13 is reset to the initial state and drives the quantitative sliding plate 8 to return to the initial position.
Preferably, as shown in fig. 5, the quantitative sliding plate 8 is further provided with a limit block 14, and when the quantitative sliding plate 8 is located at the powder discharging position, the limit block 14 is partially contacted with the powder spreading plate base 10, so as to lock the position of the quantitative sliding plate 8.
In one or more embodiments, the powder spreading device 1 can be provided with a combination of one to five sets of solenoid valves 5, a slide bar 6, a slide fixing block 7, a quantitative slide 8 and a spring 13. The one to five groups of electromagnetic valves 5 are all fixed on the powder paving plate base 10 and can respectively control the corresponding sliding bars 6; the one to five groups of sliding plate fixing blocks 7 and the springs 13 are respectively connected with two ends of the quantitative sliding plate 8, and the two are controlled by the electromagnetic valve 5 and the sliding rod 6 to cooperatively drive the quantitative sliding plates 8 to slide. The one to five groups of quantitative sliding plates 8 can be simultaneously accommodated in a gap between the upper part 9 of the powder paving plate and the base 10 of the powder paving plate and are mutually limited, so that the groups of quantitative sliding plates 8 are ensured to move along a straight line. The quantitative sliding plates 8 of one to five groups can be arranged according to powder laying, and the corresponding quantitative sliding plates 8 are respectively controlled to be at the initial position or the powder discharging position through the electromagnetic valves 5 of each group.
The utility model also provides a spread powder system, contain like embodiment one or two spread the powder device.
In one or more embodiments, the powder spreading system further comprises a motor and a guide rail, wherein the motor controls the powder spreading device to move in the x and y directions along the guide rail, so that the powder spreading device can perform quantitative powder spreading on all the sites on the same printing layer. Preferably, the powder spreading device of the powder spreading system comprises a combination of one to five groups of electromagnetic valves, a sliding bar, a sliding plate fixing block and a quantitative sliding plate. The combination of the one-to-five groups of electromagnetic valves, the sliding bar, the sliding plate fixing block and the quantitative sliding plate can simultaneously control the powder laying or non-powder laying of 1-5 sites on the same x coordinate or y coordinate.
In other embodiments, the powder spreading system comprises at least two powder spreading devices. Correspondingly, the at least two powder spreading devices can move in the x direction and the y direction along the guide rail respectively under the control of the motor. Specifically, spread the powder system and contain at least one x axle guide rail, the mobile station that passes the guide rail is installed respectively to at least one x axle guide rail, two at least powder devices of shop can be installed respectively on above-mentioned mobile station through modes such as parallel arrangement, back to back. The motors control the at least two moving tables to move along the x-axis guide rail, so that the at least two powder spreading devices are controlled to move in the x direction. The at least one x-axis guide rail can also move along a y-axis guide rail of the powder paving system in a driving mode of a lead screw, a synchronous belt and the like, and the lead screw and the synchronous belt device are respectively controlled by a motor. In the above embodiment, at least two powder spreading devices of the powder spreading system may be moved to respective positions of the same printing layer, respectively.
In one or more embodiments, the powder placement system may also place two powders one after the other for different sites on the same print layer. Preferably, the powder laying system comprises a powder laying device; the powder cylinder of the powder paving device is loaded with a first powder material, and the powder paving system can pave the first powder material on a specific site according to a printing design; then emptying the first powder material remained in the powder cylinder and loading a second powder material; and then spreading the second powder material on other sites according to the printing design, and further spreading different types of powder on different printing sites or working areas of the same printing layer.
In one or more embodiments, the powder laying system comprises at least two powder laying devices, which lay down different powder materials, respectively. At least two powder paving devices can respectively pave different powder materials according to the design needs to each position under the control of motor and guide rail to can realize paving the powder of carrying out different kinds of powder in the different work areas of same printing layer.
The above description is only the preferred embodiment of the present invention, and is not intended to limit the technical solution of the present invention in any form. Whatever the basis the utility model discloses a technical entity does any simple modification to above embodiment, and form change and modification all fall into the utility model discloses a protection scope.
Claims (10)
1. The powder spreading device is characterized by comprising a powder spreading plate, a powder barrel, a powder outlet, an electromagnetic valve, a sliding bar, a sliding plate fixing block and a quantitative sliding plate, wherein the powder spreading plate comprises a powder spreading plate upper part and a powder spreading plate base; the electromagnetic valve is fixed on the powder paving plate base and controls the sliding bar to move; the sliding bar is connected with a sliding plate fixing block, and the sliding plate fixing block is connected with a quantitative sliding plate; the quantitative sliding plate penetrates through a gap between the upper part of the powder paving plate and the powder paving plate base, and is provided with a quantitative hole; when the quantitative sliding plate is located at the initial position, the quantitative hole is located at the bottom of the powder cylinder, and powder materials in the powder cylinder fall into the quantitative hole; when the slide bar is controlled by the electromagnetic valve until the quantitative slide plate is positioned at the powder discharging position, the quantitative hole is positioned at the top of the powder outlet, and the powder material in the quantitative hole falls from the powder outlet.
2. A powder spreading device as claimed in claim 1, wherein the top of the powder outlet is located on the movement track of the quantitative sliding plate and outside the inner wall of the powder cylinder.
3. A powder spreading device as claimed in claim 1, wherein the powder spreading plate base is further provided with a spring, and the spring is connected with the quantitative sliding plate; when the quantitative sliding plate is positioned at the powder discharging position, the spring is in a stretching state; when the quantitative sliding plate is located at the initial position, the spring is reset to the initial state.
4. A powder spreading device as claimed in claim 1, wherein the aperture area of the quantitative aperture is equal to or less than the cross-sectional area of the powder outlet.
5. A dusting apparatus as claimed in claim 1, characterized in that the quantitative sliding plate is further provided with a stopper for locking the quantitative sliding plate when the quantitative sliding plate is in the powder discharging position.
6. A powder spreading device as claimed in claim 1, wherein the powder spreading device comprises a combination of one to five sets of solenoid valves, a slide bar, a slide plate fixing block, and a quantitative slide plate.
7. A powder laying system having a powder laying device according to any one of claims 1 to 6.
8. A dusting system as claimed in claim 7 further comprising a motor and a rail, wherein the motor controls the movement of the dusting device along the rail in the x, y directions.
9. A dusting system as claimed in claim 7, characterized in that the dusting system comprises at least two dusting devices.
10. A dusting system as claimed in claim 9 wherein said at least two dusting devices each apply a different powder material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020387834.3U CN212495399U (en) | 2020-03-24 | 2020-03-24 | Powder paving device and system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020387834.3U CN212495399U (en) | 2020-03-24 | 2020-03-24 | Powder paving device and system |
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| CN212495399U true CN212495399U (en) | 2021-02-09 |
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| CN202020387834.3U Active CN212495399U (en) | 2020-03-24 | 2020-03-24 | Powder paving device and system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113333783A (en) * | 2021-06-11 | 2021-09-03 | 大族激光科技产业集团股份有限公司 | Powder paving mechanism, 3D printing device and powder paving method |
| CN113787709A (en) * | 2021-08-23 | 2021-12-14 | 西安交通大学 | A large and slender part printing equipment that can quantitatively select two-way powder coating |
-
2020
- 2020-03-24 CN CN202020387834.3U patent/CN212495399U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113333783A (en) * | 2021-06-11 | 2021-09-03 | 大族激光科技产业集团股份有限公司 | Powder paving mechanism, 3D printing device and powder paving method |
| CN113333783B (en) * | 2021-06-11 | 2023-09-01 | 大族激光科技产业集团股份有限公司 | Powder spreading mechanism, 3D printing device and powder spreading method |
| CN113787709A (en) * | 2021-08-23 | 2021-12-14 | 西安交通大学 | A large and slender part printing equipment that can quantitatively select two-way powder coating |
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