CN211390164U - Powder feeding and spreading device with double-edge scraper and additive manufacturing equipment - Google Patents
Powder feeding and spreading device with double-edge scraper and additive manufacturing equipment Download PDFInfo
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- CN211390164U CN211390164U CN201921989603.3U CN201921989603U CN211390164U CN 211390164 U CN211390164 U CN 211390164U CN 201921989603 U CN201921989603 U CN 201921989603U CN 211390164 U CN211390164 U CN 211390164U
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Abstract
The utility model provides a send and spread powder device and vibration material disk equipment with twolip scraper, wherein send and spread powder device with twolip scraper includes the scraper fixing base, runs through to be provided with first cavity in the scraper fixing base, is equipped with a set of scraper in the one end of first cavity on the scraper fixing base, perhaps respectively is equipped with a set of scraper in the both ends of first cavity on the scraper fixing base, and first cavity is used for accepting the powder that supplies the powder device whereabouts, and falls to corresponding a set of scraper in through the tip that is equipped with the scraper of this first cavity, so that this group's scraper spreads the powder and send work area to, the utility model discloses in the powder that supplies the powder device only can fall to a set of scraper in through first cavity down, its opposite face contact with a set of scraper only, and can not glue the outside of a set of scraper, thereby the route that the powder floated greatly reduced, and when carrying out two-way sending and spreading the powder, also can not cause and spread the powder face inefficacy because the powder because the rear side of scraper direction of motion floats and glues because of.
Description
Technical Field
The application relates to the technical field of 3D printing, in particular to a powder conveying and spreading device with a double-edge scraper and additive manufacturing equipment.
Background
The Additive Manufacturing technology (AM for short) is an advanced Manufacturing technology with the distinct characteristics of digital Manufacturing, high flexibility and adaptability, direct CAD model driving, rapidness, rich and diverse material types and the like, and has a very wide application range because the Additive Manufacturing technology is not limited by the complexity of the shape of a part and does not need any tool die. Selective Laser Melting (SLM), one of additive manufacturing technologies, has been developed very rapidly in recent years, and its main processes are: the powder conveying device conveys a certain amount of powder to a working table, the powder paving device flatly paves a layer of powder material on the upper surface of the part formed by the piston, the scanning device scans the powder layer of the solid part according to the cross-section axial profile of the layer, the temperature of the powder is raised to a melting point, and the powder is melted and sintered and is bonded with the formed part below the powder; after one layer of cross section is sintered, the workbench descends by the thickness of one layer, the powder laying device lays a layer of uniform and compact powder on the workbench, the scanning sintering of a new layer of cross section is carried out, and the three-dimensional solid is scanned and stacked by a plurality of layers until the whole three-dimensional solid is manufactured.
The powder feeding and spreading device in the prior art generally adopts a single scraper to carry out unidirectional powder feeding and spreading. In order to further improve the work efficiency of powder spreading, a single scraper is also adopted to realize bidirectional powder feeding and spreading, however, in the bidirectional powder feeding and spreading process: when powder needs to be fed and spread leftwards, the powder supply device falls to the left side of the scraper by a certain amount of powder, and the scraper spreads the powder to the forming area leftwards; when powder needs to be conveyed and spread rightwards, the powder supply device falls for a certain amount of powder to the right side of the scraper, and the scraper flatly spreads the powder to the forming area rightwards. Although bidirectional powder feeding and spreading can be achieved, since the 3D printed powder generally has certain viscosity, some powder is necessarily left in the path of the powder falling to the left or right side of the scraper, and the left powder usually falls under the vibration of the powder spreading device to affect the flatness of the powder surface, for example, when the scraper lays the powder to the left of the molding area, the powder falling from the right side of the scraper through vibration affects the already laid powder surface; when the scraper flatly spreads the powder to the forming area rightwards, the powder falling through vibration on the left side of the scraper also affects the paved powder surface, so that the quality of a sintered product is affected, and even if the powder is serious, the whole sintered product is scrapped.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned technical problem that prior art exists, the utility model provides an improve sintering finished piece quality, and simple structure send and spread powder device and vibration material disk equipment.
In order to achieve the above object, the utility model provides a send and spread powder device with twolip scraper, including the scraper fixing base, run through in the scraper fixing base and be provided with first cavity, be equipped with a set of scraper in the one end of first cavity on the scraper fixing base, perhaps respectively be equipped with a set of scraper in the both ends of first cavity on the scraper fixing base, first cavity is used for accepting the powder that supplies the powder device whereabouts to in the tip whereabouts that is equipped with the scraper through this first cavity to a set of scraper that corresponds, so that this set of scraper spreads the powder and send work area to.
As a further preferred scheme of the utility model, the scraper fixing base is the cylinder, just still run through the second cavity that is provided with the first cavity of perpendicular to in the scraper fixing base, be equipped with a set of scraper in the one end of second cavity on the scraper fixing base, perhaps respectively be equipped with a set of scraper in the both ends of second cavity on the scraper fixing base.
As a further preferable aspect of the present invention, the volumes of the first cavity and the second cavity are both larger than the volumes corresponding to the two layers of sintering powder.
As a further preferred scheme of the utility model, every group scraper includes that two symmetries set up two cutting edges in first cavity or second cavity tip both sides, and every cutting edge passes through clamp plate fixed mounting on the scraper fixing base.
As a further preferred scheme of the utility model, the scraper fixing base outside is equipped with the protection casing.
As a further preferred scheme of the utility model, the inside both sides of protection casing are equipped with scrapes the bean noodles, just scrape the surface interference fit that the inside one end of protection casing and cutting edge were kept away from to the bean noodles.
As a further preferred scheme of the utility model, send and spread powder device still includes actuating mechanism, the central point of scraper fixing base puts and is equipped with the rotation axis, thereby actuating mechanism drives the scraper fixing base through the rotation of drive rotation axis and rotates.
The utility model also provides a vibration material disk equipment, including supplying powder device, shaping jar, first excessive powder jar, the excessive powder jar of second, scanning system, and above-mentioned arbitrary item send the powder device of spreading with twolip scraper, supply the powder device to be located and send the powder device top of spreading, the shaping jar is located the working plane below, first excessive powder jar and first excessive powder jar are located the both sides of shaping jar respectively, and send the powder device of spreading to carry out the back and forth motion between first excessive powder jar and first excessive powder jar to spread the powder and send work area.
As a further preferred scheme of the utility model, the powder device was spread to the first excessive powder jar of being close to send one side and the powder device was spread to the second excessive powder jar of being close to send one side all to be provided with the whitewashed strip to when sending the powder device of spreading to send surplus powder to the excessive powder jar in, whitewashed strip is used for and spreads the scraper surface interference fit who send the powder device.
The utility model discloses a send powder paving device and vibration material disk equipment with twolip scraper, through penetrating through and being provided with the first cavity in the scraper fixing base, the scraper fixing base is last to be equipped with a set of scraper in the one end of first cavity, perhaps the scraper fixing base is last respectively to be equipped with a set of scraper in the both ends of first cavity, first cavity is used for accepting the powder that supplies the powder device to fall, and fall to corresponding a set of scraper in through the tip of this first cavity that is equipped with the scraper, so that this group of scraper spreads the powder to the work area, makes the powder that supplies the powder device only can pass through in the first cavity fall to a set of scraper, it only contacts with the opposite face (inboard) of a set of scraper, and can not glue the outside of a set of scraper, thereby the route that the powder drifted down has significantly reduced, and when carrying out two-way send powder paving, also can not glue the powder because the rear side of scraper direction of motion and glue the powder and cause the powder paving face to become invalid because of the powder drifted down, thereby affecting the quality of the sintered article. Therefore, the utility model discloses not only improve sintering finished piece quality, simple structure moreover.
Drawings
FIG. 1 is a side view of an embodiment of the powder delivery and placement device with a double-edged scraper of the present invention;
FIG. 2 is a front view of a set of scrapers of the present invention;
FIG. 3 is a front view of a preferred embodiment of the powder delivery and placement device with a double-edged scraper according to the present invention;
fig. 4 is a schematic view of an operating principle of an embodiment provided by the additive manufacturing apparatus of the present invention;
fig. 5 is a schematic diagram of an operating principle of an embodiment provided by the additive manufacturing apparatus of the present invention.
The figures are labeled as follows:
2.1 scraper, 2.2 clamp plate, 2.3 scraper fixing base, 2.4 rotation axis, 2.5 confession powder device, 2.6 protection casing, 2.7 scrape whitewashed strip, 3.1 first whitewashed jar, 3.2 first whitewashed strip, 3.3 feed opening, 3.4 first cavity, 3.5 forming cylinder, 3.6 second whitewashed strip, 3.7 second whitewashed jar, 3.8 second cavity.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
As shown in fig. 1 and 2, the powder delivering and spreading device with a double-edge scraper includes a scraper fixing seat 2.3, a first cavity 3.4 is penetratingly disposed in the scraper fixing seat 2.3, a group of scrapers 2.1 is disposed at one end of the first cavity 3.4 on the scraper fixing seat 2.3, or a group of scrapers 2.1 is disposed at two ends of the first cavity 3.4 on the scraper fixing seat 2.3, respectively, the first cavity 3.4 is used for receiving powder falling from the powder supplying device 2.5, and the end portion of the first cavity 3.4 where the scraper 2.1 is disposed falls into the corresponding group of scrapers 2.1, so that the group of scrapers 2.1 spreads the powder to a working area. It should be noted here that when both ends of the first cavity 3.4 are provided with a set of scrapers, either end of the first cavity 3.4 can be used for receiving the powder falling from the powder supply device 2.5, and the powder falls into the corresponding set of scrapers 2.1 through the other end.
Preferably, the scraper fixing seat 2.3 is a cylinder, and the scraper fixing seat 2.3 is provided with a second cavity 3.8 perpendicular to the first cavity 3.4, the scraper fixing seat 2.3 is provided with a group of scrapers 2.1 at one end of the second cavity 3.8, or the scraper fixing seat 2.3 is provided with a group of scrapers 2.1 at two ends of the second cavity 3.8. The second cavity 3.8 is used for receiving the powder falling from the powder supply device 2.5, and the powder falls into the corresponding group of scrapers 2.1 through the end part of the second cavity 3.8 provided with the scrapers 2.1, so that the group of scrapers 2.1 can spread the powder to the working area.
In specific implementations, the doctor blade holder 2.3 may be a cylinder, a square body, or an approximate cylinder, etc., and is not limited herein.
In a preferred embodiment, the powder feeding and spreading device further comprises a driving mechanism, a rotating shaft 2.4 is arranged at the center of the scraper fixing seat 2.3, and the driving mechanism drives the scraper fixing seat to rotate by driving the rotating shaft 2.4 to rotate. The driving mechanism can be directly driven by a motor, and can also be other components in the prior art, which is not exemplified here.
The utility model discloses a can set up a set of scraper 2.1 on the scraper fixing base 2.3. But there is a corresponding wear due to the blades 2.1, including the usual rubber blades, metal blades and ceramic blades. With the development of 3D printing, the printing time of one forming cylinder 3.5 with a part of the work piece and the equipment is longer, which may reach 360 hours of continuous operation or longer; the number of printed layers can also be as many as twenty thousand layers. The wear of the blades 2.1 can be relatively large and a set of blades 2.1 cannot perform a continuous printing job at all. If the work is stopped in the middle of work, the continuous trace is inevitably generated, and the printing quality is influenced.
Therefore, in order to solve the problem that the blade 2.1 is worn out to cause the printing work to be discontinuous, it is preferable to provide a plurality of sets of blades 2.1, for example, 4 sets of blades 2.1 as shown in fig. 1. The four groups of scrapers 2.1 are respectively mounted at four axial positions of the rotating shaft 2.4. When one group of the scrapers 2.1 is used, the other groups of the scrapers 2.1 are idle and avoid. It can be replaced in the following two ways: firstly, a group of scrapers 2.1 is used to the service life limit of the scraper 2.1, and a new scraper 2.1 is automatically switched. Secondly, the ink is replaced by using the ink in turn for a short time, for example, the ink prints 1 to 10 layers and rotates for an angle to replace the scraper 2.1 once, so that the thickness difference of the powder laying layer caused by different abrasion degrees of the scraper 2.1 is reduced. For example, a workpiece with a thickness of 20000 layers needs to be printed, the service life of one blade 2.1 is about 10000 layers at ordinary times, and if 3 groups of blades 2.1 are arranged, in order to ensure the wear consistency of the 3 groups of blades 2.1, one blade 2.1 replacement is performed by setting each group of blades 2.1 to work for 6 times. Then, when the first group of scrapers 2.1 go three times between the position a and the position D and then go back and forth at the position C, the rotating shaft 2.4 is driven to rotate by 90 degrees by the driving mechanism and the scraper fixing seat 2.3 is driven to rotate by 90 degrees in the waiting time of the laser sintering operation, and then the second group of scrapers 2.1 is replaced to operate. When the third group of the scrapers 2.1 is also operated, the third group of the scrapers needs to rotate 180 degrees and return to the working position of the first group of the scrapers 2.1. And the operation is circulated until the work is finished.
It should be noted here that although the present invention only refers to the first cavity 3.4 and the second cavity 3.8, more cavities, such as the fourth cavity, the fifth cavity, etc., may be provided according to the design requirement, and similarly, a group of scrapers may be provided at one end or both ends of the cavity according to the requirement, so as to have more groups of scrapers.
As a further preferable aspect of the present invention, the volumes of the first cavity 3.4 and the second cavity 3.8 are both larger than the volumes corresponding to the two layers of sintering powder, and preferably slightly larger than the volumes corresponding to the two layers of sintering powder. This allows the amount of powder stored in the first cavity 3.4 or the second cavity 3.8 to be equal to or slightly greater than the amount of powder required for sintering of the two layers each time, so that when the scraper set 2.1 is moved forward once to lay out a powder surface, and the scraper set 2.1 is returned to the powder receiving position, the powder in the first cavity 3.4 or the second cavity 3.8 can be laid out for a second time. This allows a substantial savings in dusting time and dusting wait time.
In specific implementation, each group of the scrapers 2.1 comprises two symmetrical cutting edges which are arranged at two sides of the end part of the first cavity 3.4 or the second cavity 3.8, and each cutting edge is fixedly arranged on the scraper fixing seat 2.3 through the pressing plate 2.2. In a specific implementation, the scraper may be made of rubber or metal. When the scraper is made of rubber, the scraper can be a whole body containing two cutting edges. When the scraper is made of metal, the scraper can be a whole containing two cutting edges or the two cutting edges exist independently and are assembled into a whole. As a further preferred scheme of the utility model, scraper fixing base 2.3 outside is equipped with protection casing 2.6 to meet accident or foreign matter drops when preventing to rotate. Further preferably, two sides inside the protective cover 2.6 are provided with the vermicelli scraping strips 2.7, and one end of the vermicelli scraping strips 2.7 far away from the inside of the protective cover 2.6 is in interference fit with the surface of the cutting edge. Therefore, certain sealing performance can be guaranteed, powder in the first cavity 3.4 or the second cavity 3.8 is prevented from falling randomly when powder discharging is not needed, namely when two ports of the first cavity 3.4 or the second cavity 3.8 move to the powder scraping strips 2.7, the two ports are sealed through the powder scraping strips 2.7; meanwhile, the surface of the scraper 2.1 can be cleaned while the scraper 2.1 is rotatably replaced, and unnecessary powder residue and falling are reduced.
The utility model also provides an additive manufacturing equipment, including supplying powder device 2.5, shaping jar 3.5, first powder jar 3.1 that overflows, the second overflows powder jar 3.7, scanning system to and any embodiment of the aforesaid send the powder device of spreading with the twolip scraper, supply powder device 2.5 to be located to send and spread powder device top, shaping jar 3.5 is located the working plane below, first powder jar 3.1 that overflows and first powder jar 3.1 that overflows are located shaping jar 3.5's both sides respectively, and send the powder device of spreading to carry out the back and forth motion between first powder jar 3.1 that overflows and first powder jar 3.1 to spread the powder and send work area. It should be noted that the powder supply device 2.5, the forming cylinder 3.5, the first powder overflow cylinder 3.1, the second powder overflow cylinder 3.7 and the scanning system are in the prior art, and therefore the detailed structure thereof will not be described in detail here.
In a preferred embodiment, the side of the first powder overflow cylinder 3.1 close to the powder feeding and spreading device and the side of the second powder overflow cylinder 3.7 close to the powder feeding and spreading device are both provided with a powder brushing strip (specifically comprising a first powder brushing strip 3.2 arranged in the first powder overflow cylinder 3.1 and a second powder brushing strip 3.6 arranged in the second powder overflow cylinder 3.7), so that when the powder feeding and spreading device spreads the residual powder into the first powder overflow cylinder 3.1 or the second powder overflow cylinder 3.7, the first powder brushing strip 3.2 or the second powder brushing strip 3.6 is used for interference fit with the surface of the scraper 2.1 of the powder spreading device to scrape off slight powder possibly adhered to the scraper 2.1, thereby further avoiding that the powder possibly remained on the cutting edge in the opposite direction of the movement of the scraper 2.1 affects the already spread powder due to movement or falling, i.e. further ensuring the integrity of the powder spreading surface.
In order to make the technical solutions of the present invention better understood and implemented by those skilled in the art, the following detailed description is made of the working principle of the additive manufacturing apparatus by way of example with reference to the accompanying drawings:
as shown in fig. 4 and 5, the powder delivering and spreading device moves between a position a and a position D above the forming cylinder 3.5, and the excess powder is pushed to the first powder overflowing cylinder 3.1 and the second powder overflowing cylinder 3.7 at two ends of the forming cylinder 3.5 by a group of scrapers 2.1 of the powder delivering and spreading device to be collected and processed intensively. And when the powder feeding and spreading device stops at the position B, the upper powder feeding and receiving actions are carried out. The powder feeding and spreading device is stopped at a zero position (shown in figure 4) with the position C being the default scraper 2.1, and is a position for waiting for the laser sintering station.
The sequence of operation of this apparatus is as follows: the powder feeding and spreading device moves from the original point position C to the position A and then stops at the position B, the position B is a powder feeding and receiving position (shown in figure 5) of the powder supplying device 2.5, when the powder feeding and spreading device reaches a position instruction, the powder supplying device 2.5 automatically drops the powder amount required by two complete powder surfaces to the first cavity 3.4 or the second cavity 3.8 in the scraper fixing seat 2.3 through the discharging opening 3.3. Then send and spread powder device and move to position C, when scraper 2.1 blade contact was scraped the vermicelli 2.7, the powder that probably the adhesion when the blade on scraper 2.1 right side pushed the powder forward can be scraped off by scraping vermicelli 2.7, then when not haring scraper 2.1, can guarantee that scraper 2.1 is when walking towards A direction, and no unnecessary powder of remaining drops on the powder face of laying on this blade. The position at this time is located as position D. The blade 2.1 then stops back at position C, waiting for the laser sintering of the powder surface of this layer to work. After the sintering operation is completed, the forming cylinder 3.5 is lowered by one layer thickness, and at the moment, the first cavity 3.4 or the second cavity 3.8 in the scraper fixing seat 2.3 also contains a powder amount required by the complete powder surface whole-paving operation. The powder conveying and spreading device moves from the position C to the position B to complete the second powder spreading work, so that the time for waiting for the return of the scraper 2.1 and receiving the powder is saved. The scraper fixing seat 2.3 moves forward to reach the position A, at the moment, the position requires that the scraper 2.1 completely passes over the first powder overflowing cylinder 3.1, and redundant powder in the group of scrapers 2.1 is pushed to the first powder overflowing cylinder 3.1, so that the second powder receiving and spreading is ensured to be clean powder.
In specific implementation, the vermicelli scraping strip 2.7 is of a flexible rubber structure, can play a role in cleaning, does not damage the scraper 2.1, has considerable reliability and use times, does not cause abrasion substances to fall into powder, and can be replaced periodically.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (9)
1. The utility model provides a send powder device of spreading with twolip scraper, a serial communication port, includes the scraper fixing base, run through in the scraper fixing base and be provided with first cavity, be equipped with a set of scraper in the one end of first cavity on the scraper fixing base, perhaps respectively be equipped with a set of scraper in the both ends of first cavity on the scraper fixing base, first cavity is used for accepting the powder that supplies the powder device whereabouts to through this first cavity be equipped with the tip whereabouts of scraper to in the a set of scraper that corresponds, so that this group's scraper spreads the powder and send work area to.
2. The powder conveying and spreading device with the double-edge scraper as claimed in claim 1, wherein the scraper fixing seat is a cylinder, a second cavity perpendicular to the first cavity is further arranged in the scraper fixing seat in a penetrating manner, a group of scrapers is arranged at one end of the second cavity on the scraper fixing seat, or a group of scrapers is arranged at two ends of the second cavity on the scraper fixing seat.
3. The powder delivery device with a double-edged scraper as claimed in claim 2, wherein the volumes of the first and second cavities are each greater than the volume corresponding to two layers of sintered powder.
4. The powder conveying and spreading device with the double-edge scraper blade as claimed in claim 3, wherein each group of scraper blades comprises two symmetrical blade edges arranged on two sides of the end part of the first cavity or the second cavity, and each blade edge is fixedly arranged on the scraper fixing seat through a pressing plate.
5. A powder delivery and spreading device with a double-edged scraper as claimed in claim 4, wherein a protective cover is arranged outside the scraper fixing seat.
6. The powder conveying and spreading device with the double-edge scraper blade as claimed in claim 5, wherein the two sides of the inside of the protective cover are provided with the powder scraping strips, and one end of each powder scraping strip, which is far away from the inside of the protective cover, is in interference fit with the surface of the blade.
7. The powder conveying and spreading device with the double-edge scraper is characterized by further comprising a driving mechanism, wherein a rotating shaft is arranged at the center of the scraper fixing seat, and the driving mechanism drives the scraper fixing seat to rotate by driving the rotating shaft to rotate.
8. An additive manufacturing apparatus comprising a powder supply device, a forming cylinder, a first powder overflow cylinder, a second powder overflow cylinder, a scanning system, and the powder delivery and placement device with a double-edged scraper of any one of claims 1 to 7, wherein the powder supply device is located above the powder delivery and placement device, the forming cylinder is located below a working plane, the first powder overflow cylinder and the first powder overflow cylinder are respectively located at two sides of the forming cylinder, and the powder delivery and placement device reciprocates between the first powder overflow cylinder and the first powder overflow cylinder to place powder in a working area.
9. Additive manufacturing apparatus according to claim 8, wherein a side of the first powder overflow cylinder adjacent to the powder delivery device and a side of the second powder overflow cylinder adjacent to the powder delivery device are each provided with a brushing strip for interference fit with a scraper surface of the powder delivery device when the powder delivery device delivers the remaining powder into the powder overflow cylinder.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921989603.3U CN211390164U (en) | 2019-11-18 | 2019-11-18 | Powder feeding and spreading device with double-edge scraper and additive manufacturing equipment |
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| CN201921989603.3U CN211390164U (en) | 2019-11-18 | 2019-11-18 | Powder feeding and spreading device with double-edge scraper and additive manufacturing equipment |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114260472A (en) * | 2021-12-29 | 2022-04-01 | 湖南华曙高科技股份有限公司 | Bidirectional powder paving device, laser sintering equipment and assembly method of bidirectional powder paving device |
| CN114570927A (en) * | 2020-12-02 | 2022-06-03 | 天津工业大学 | Multi-scraper powder spreading device, additive manufacturing equipment and method |
| CN115213436A (en) * | 2022-07-22 | 2022-10-21 | 合肥工业大学 | Double-material accurate powder laying device for SLM and control method thereof |
-
2019
- 2019-11-18 CN CN201921989603.3U patent/CN211390164U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114570927A (en) * | 2020-12-02 | 2022-06-03 | 天津工业大学 | Multi-scraper powder spreading device, additive manufacturing equipment and method |
| CN114570927B (en) * | 2020-12-02 | 2023-12-08 | 天津工业大学 | Multi-scraper powder spreading device, additive manufacturing equipment and method |
| CN114260472A (en) * | 2021-12-29 | 2022-04-01 | 湖南华曙高科技股份有限公司 | Bidirectional powder paving device, laser sintering equipment and assembly method of bidirectional powder paving device |
| CN115213436A (en) * | 2022-07-22 | 2022-10-21 | 合肥工业大学 | Double-material accurate powder laying device for SLM and control method thereof |
| CN115213436B (en) * | 2022-07-22 | 2023-07-25 | 合肥工业大学 | Double-material accurate powder spreading device for SLM and control method thereof |
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Address after: No. 181, Linyu Road, national high tech Industrial Development Zone, Changsha City, Hunan Province, 410205 Patentee after: Hunan Huashu High Tech Co.,Ltd. Address before: No. 181, Linyu Road, national high tech Industrial Development Zone, Changsha City, Hunan Province, 410205 Patentee before: HUNAN FARSOON HIGH-TECH Co.,Ltd. |
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