CN210188486U - SLM equipment send powder to spread powder device - Google Patents
SLM equipment send powder to spread powder device Download PDFInfo
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- CN210188486U CN210188486U CN201920911007.7U CN201920911007U CN210188486U CN 210188486 U CN210188486 U CN 210188486U CN 201920911007 U CN201920911007 U CN 201920911007U CN 210188486 U CN210188486 U CN 210188486U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The utility model discloses a SLM equipment send powder shop powder device, relate to SLM technical field, the device fuses E.O.S formula and DTM formula mutually, send the mode that powder mode adopted the hopper formula of E.O.S formula principle to send the powder on, shop's powder shaping workstation improves on the basis of DTM formula, all assemble the powder recovery jar in shop's powder shaping jar both sides, the device can not only control well and send the powder volume, it also is favorable to equipment to move steadily to improve powder utilization efficiency, shop's powder device only needs the single stroke motion at every turn simultaneously, need not to return journey, it improves efficiency to have practiced thrift man-hour greatly.
Description
Technical Field
The utility model belongs to the technical field of the SLM technique and specifically relates to a SLM equipment send powder to spread powder device.
Background
The powder feeding and spreading device of the mainstream SLM equipment in the current market is mainly based on an E.O.S type powder spreading principle and a DTM type powder spreading principle:
(1) E.O.S type powder laying principle
The E.O.S type powder laying principle adopts a hopper type upper powder feeding mode to feed powder, the whole structure is provided with only one powder laying forming cylinder, and the powder feeder can be divided into a movable hopper type and a fixed hopper type according to the fact whether the powder feeder can move or not. As shown in figure 1, the movable funnel type powder spreading forming cylinder spreads metal powder everywhere through movement, then the powder spreading roller spreads the powder in the powder spreading forming cylinder, the powder feeding amount is controlled through the opening and the opening time of the control switch, the powder overflow is less, even the powder recovery cylinder is not needed, but the requirements on the performances of the metal powder such as flowability and the like are higher, the limitation is more, and the equipment is higher in use difficulty. As shown in fig. 2, the fixed funnel type is fixed above the working table surface outside the powder laying forming cylinder, powder is poured on the working table, and then the powder is pushed into the powder laying forming cylinder by the powder laying roller and laid flat.
(2) DTM type powder laying principle
The DTM type powder laying principle adopts a lower powder feeding mode to feed powder, as shown in figure 3, a powder feeding cylinder, a powder laying forming cylinder and a powder recycling cylinder are arranged side by side, sufficient metal powder is placed in the powder feeding cylinder, when powder feeding is needed, the powder feeding cylinder rises to a certain height, the powder in the cylinder is enabled to be higher than the plane of a workbench, then a powder laying roller pushes the powder into the powder laying forming cylinder and lays the powder flat, then the powder laying roller pushes the redundant powder into the powder recycling cylinder outside the powder laying forming cylinder to collect the unused metal powder, and then the powder laying roller returns to the original point. The mode can simply and effectively control the powder feeding amount, the powder utilization rate is relatively high, but the powder spreading roller needs to return to the original position before spreading powder each time, and the SLM technology divides a workpiece into a plurality of layers to be respectively melted and processed, so the working time of the double-stroke working mode is greatly increased, and the overall working efficiency is reduced.
It can be seen from the above that, the structure powder overflow volume based on the E.O.S formula shop powder principle is less but higher to the requirement of powder material and device, and the structure based on the DTM formula shop powder principle is simple and practical, but work efficiency is lower, all has certain defect.
SUMMERY OF THE UTILITY MODEL
The invention provides a SLM equipment powder feeding and spreading device aiming at the problems and the technical requirements, the device adopts an E.O.S type powder feeding principle and combines with a main body structure of a DTM type, and powder recovery cylinders are assembled on two sides of a powder spreading forming cylinder, so that the powder feeding amount can be well controlled, the powder utilization efficiency is improved, the equipment can stably run, and meanwhile, the powder spreading device only needs single-stroke motion for spreading powder every time, the return stroke is not needed, and the efficiency is higher.
The technical scheme of the utility model as follows:
a powder feeding and spreading device of SLM equipment comprises a powder feeder, a powder spreading forming workbench, a powder spreading device and a lifting platform, wherein the powder feeder is arranged above the powder spreading forming workbench, and a powder outlet of the powder feeder is vertically and downwards opposite to the powder spreading forming workbench;
the powder spreading device comprises two guide rails, two racks, a transmission shaft, a cover plate, a compression roller box, a compression roller, a motor base and a powder spreading motor; the powder spreading and forming device comprises a powder spreading and forming workbench, two guide rails, a transmission shaft, a compression roller box, a compression roller, a plurality of guide rails, a plurality of racks and a plurality of gears, wherein the two guide rails are fixed on the table surface of the powder spreading and forming workbench, the two guide rails are respectively positioned on two sides of the powder spreading and forming workbench and are parallel to each other; a driven wheel is also arranged on the transmission shaft, the motor base is fixed on the cover plate, the powder paving motor is arranged on the motor base, a motor shaft of the powder paving motor is connected with the driven wheel on the transmission shaft through a belt, and the transmission shaft drives the cover plate to move along the guide rail under the driving of the powder paving motor;
the powder spreading forming workbench is provided with a powder spreading forming cylinder and two powder recovery cylinders along the arrangement direction of the guide rail, and the two powder recovery cylinders are respectively positioned at two sides of the powder spreading forming cylinder; the lifting platform comprises a lifting motor, a screw rod mechanism and a platform top plate, the platform top plate is arranged in the powder paving forming cylinder, the bottom of the platform top plate is connected with the screw rod mechanism, the lifting motor is connected with and drives the screw rod mechanism, and the screw rod mechanism drives the platform top plate to do piston motion in the powder paving forming cylinder.
The utility model has the beneficial technical effects that:
the application discloses SLM equipment send powder shop powder device, the device fuses E.O.S formula and DTM formula mutually, send the powder mode to adopt E.O.S formula principle, all assemble the powder recovery jar in shop powder shaping jar both sides simultaneously, can not only control well and send the powder volume, improve powder utilization efficiency and also be favorable to equipment to move steadily, shop powder device only need the single stroke motion at every turn simultaneously, need not to return, practiced thrift man-hour greatly and improved efficiency.
Drawings
Fig. 1 is a structural view of a conventional powder feeding and spreading structure based on the e.o.s type powder spreading principle.
Fig. 2 is another structural view of a conventional powder feeding and spreading structure based on the e.o.s type powder spreading principle.
Fig. 3 is a structural view of a conventional powder feeding and spreading structure based on the DTM-type powder spreading principle.
Fig. 4 is a schematic structural diagram of a powder feeding and spreading device of the SLM apparatus of the present application.
Fig. 5 is a perspective view of a powder feeding and spreading device of the SLM apparatus of the present application.
Fig. 6 is a top structural view of the powder laying device in the present application.
Fig. 7 is a bottom structural view of the powder laying device in the present application.
Fig. 8 is an enlarged view of the structure of the powder laying device of the present application when it is mounted on the powder laying molding table.
Fig. 9 is a structural view of the powder laying and molding table in the present application.
Fig. 10 is a structural view of the elevating platform in the present application.
Detailed Description
The following describes the embodiments of the present invention with reference to the accompanying drawings.
The application discloses powder feeding and spreading device of SLM equipment, please refer to the schematic structural diagrams shown in FIG. 4 and FIG. 5, the powder feeding and spreading device of SLM equipment comprises a powder feeder 1, a powder spreading forming workbench 2, a powder spreading device 3 and a lifting platform 4, and the powder feeder 1 is not shown in FIG. 5. Powder feeder 1 sets up in shop's powder shaping workstation 2 top, and the powder outlet of powder feeder 1 is vertical downwards just to shop's powder shaping workstation 2, and powder feeder 1 can be the removal funnel formula also can be fixed funnel formula, does not do the restriction in this application.
The powder spreading device 3 is arranged on the table top of the powder spreading and forming workbench 2, the structure diagram of the powder spreading device 3 is shown in fig. 6 and 7, and the powder spreading device 3 comprises two guide rails 31, two racks 32, a transmission shaft 33, a cover plate 34, a compression roller box 35, a compression roller 36, a motor base 37 and a powder spreading motor 38. Referring to fig. 5, two guide rails 31 are fixed on the table top of the powder laying forming table 2, and the two guide rails 31 are respectively located on two sides of the powder laying forming table 2 and are parallel to each other. A rack 32 is fixed to the upper end surface of each guide rail 31. The transmission shaft 33 spans over the powder laying forming workbench 2, that is, the transmission shaft 33 is perpendicular to the arrangement direction of the guide rail 31, the transmission shaft 33 includes a shaft body 331, gears 332 are respectively fixed at two ends of the shaft body 331, rollers 333 are also respectively fixed at outer sides of the gears 332 at the two ends of the shaft body 331, a connecting plate 334 is fixedly sleeved on the shaft body 331, the gears 332 at the two ends of the transmission shaft 33 are respectively engaged with two racks 32 at two sides of the powder laying forming workbench 2, because the racks 32 are fixed close to inner sides when being fixed at the upper end surfaces of the guide rails 31 in the application, gaps are left at outer sides of the upper end surfaces of the two guide rails 31, and the rollers 333 at the two ends of the transmission shaft 33 are in sliding contact with the gaps where no rack. The driving shaft 33 is connected to the top surface of the cap plate 34 by a connecting plate 34. The transmission shaft 33 further includes a driven wheel 335, and the driven wheel 335 is disposed generally in the middle of the shaft body 331. In practical application, as shown in fig. 6, the powder spreading device 3 includes two transmission shafts 33, wherein one of the transmission shafts 33 is provided with a driven wheel 335, the other transmission shaft is not included, and the rest structures are the same. The motor base 37 is fixed on the cover plate 34, the powder spreading motor 38 is arranged on the motor base 37, the powder spreading motor 38 is realized by a servo motor, a motor shaft of the powder spreading motor 38 is connected with a driven wheel 335 on the transmission shaft 33 through a belt, and when two transmission shafts 33 are included, the powder spreading motor 38 is usually arranged far away from the transmission shaft provided with the driven wheel 335, as shown in fig. 6. The cover plate 34 is arranged in the two guide rails 31 on the two sides of the powder laying forming workbench 2, the bottom surface of the cover plate 34 and the top surface of the compression roller box 35 are fixed together, the compression roller 36 is arranged on the bottom surface of the compression roller box 35, and the bottom of the compression roller 36 is flush with the table top of the powder laying forming workbench 2. When the powder paving motor 38 works, the powder paving motor 38 drives the transmission shaft 33 to move along the guide rail 31 through a belt, so that the transmission shaft 33, the cover plate 34, the compression roller box 35, the compression roller 36, the motor base 37 and the powder paving motor 38 integrally move on the table top of the powder paving and forming workbench 2 along the guide rail 31. Fig. 8 is a partially enlarged schematic view of the powder laying device 3 mounted on the powder laying/forming table 2.
The powder spreading and forming table 2 is provided with a powder spreading and forming cylinder 21 and two powder recovery cylinders 22 along the arrangement direction of the guide rail 31, and the two powder recovery cylinders 22 are respectively positioned at two sides of the powder spreading and forming cylinder 21, as shown in fig. 9. The lifting platform 4 is disposed in the powder spreading and forming table 2 and located at the bottom of the powder spreading and forming cylinder 21, the lifting platform 4 mainly includes a lifting motor 41, a screw rod mechanism 42 and a platform top plate 43, please refer to fig. 10, the platform top plate 43 is disposed in the powder spreading and forming cylinder 21, and the bottom of the platform top plate 43 is connected to the screw rod mechanism 42, the lifting motor 41 is connected to and drives the screw rod mechanism 42, as shown in fig. 10, in practical application, the screw rod mechanism 42 is not necessarily directly connected to the platform top plate 43, but the screw rod mechanism 42 is connected to a multi-layer supporting plate structure, fig. 10 takes a three-layer supporting plate structure as an example, and the top end of. No matter what specific structure is adopted, the screw rod mechanism 42 can drive the platform top plate 43 to do piston motion in the powder laying forming cylinder 21 under the driving of the lifting motor 41.
The application of SLM equipment send whitewashed shop powder device's work flow does: the lifting platform descends by a unit height, the powder feeder 1 sends metal powder to a platform top plate 43 in the powder laying forming cylinder 21, the powder laying device 3 acts, the powder laying motor 38 positively drives the movement of the rack and pinion mechanism, the transmission shaft 33, the cover plate 34, the compression roller box 35, the compression roller 36, the motor base 37 and the powder laying motor 38 integrally move on the table top of the powder laying forming workbench 2 along the guide rail 31, the compression roller 36 presses the powder laying forming cylinder 21 to lay the powder flat, and meanwhile, redundant metal powder is pushed into the powder recovery cylinder 22 in the advancing direction. Then, a selective laser melting step can be started, when the layer is melted, the lifting platform descends by a unit height, the powder spreading motor 38 reversely drives the rack and pinion mechanism to move, the pressing roller 36 reversely moves and presses the powder spreading forming cylinder 21 again to spread the powder, meanwhile, the redundant metal powder is pushed into the powder recycling cylinder 22 on the other side, and the processing process is repeated until the processing is finished. The transmission precision is high, the transmission process is stable, the transmission efficiency is high, the synchronism is good, and the device is very suitable for the SLM equipment which needs small feeding amount and high frequency. And all be equipped with powder recovery jar 22 in shop powder forming jar 21 both sides, so not only can control the powder volume of sending well, improve powder utilization efficiency and also be favorable to equipment to move steadily, when spreading powder device 3 and spread powder moreover each time, compression roller 36 only need the one-stroke motion, need not to return journey, has practiced thrift man-hour greatly, has improved efficiency.
What has been described above is only a preferred embodiment of the present application, and the present invention is not limited to the above embodiments. It is to be understood that other modifications and variations directly derivable or suggested by those skilled in the art without departing from the spirit and scope of the present invention are to be considered as included within the scope of the present invention.
Claims (1)
1. The SLM equipment powder feeding and spreading device is characterized by comprising a powder feeder, a powder spreading forming workbench, a powder spreading device and a lifting platform, wherein the powder feeder is arranged above the powder spreading forming workbench, and a powder outlet of the powder feeder is vertically downward opposite to the powder spreading forming workbench;
the powder spreading device comprises two guide rails, two racks, a transmission shaft, a cover plate, a compression roller box, a compression roller, a motor base and a powder spreading motor; the two guide rails are fixed on the table top of the powder spreading forming workbench, the two guide rails are respectively positioned on two sides of the powder spreading forming workbench and are parallel to each other, one rack is respectively fixed on the upper end surface of each guide rail, the transmission shaft stretches across the powder spreading forming workbench, gears are respectively fixed at two ends of the transmission shaft, the gears at two ends of the transmission shaft are respectively meshed with the two racks at two sides of the powder spreading forming workbench, the transmission shaft is connected with the top surface of the cover plate through a connecting plate, the cover plate is arranged in the two guide rails at two sides of the powder spreading forming workbench, the bottom surface of the cover plate and the top surface of the compression roller box are fixed together, and the compression roller is arranged at the bottom surface of the compression roller box and the bottom of the compression roller is flush with the table top of the powder spreading forming workbench; the transmission shaft is also provided with a driven wheel, the motor base is fixed on the cover plate, the powder paving motor is arranged on the motor base, a motor shaft of the powder paving motor is connected with the driven wheel on the transmission shaft through a belt, and the transmission shaft drives the cover plate to move along the guide rail under the driving of the powder paving motor;
a powder spreading forming cylinder and two powder recovery cylinders are arranged on the powder spreading forming workbench along the arrangement direction of the guide rail, and the two powder recovery cylinders are respectively positioned on two sides of the powder spreading forming cylinder; lifting platform includes elevator motor, screw mechanism and platform roof, the platform roof sets up in spread in the powder forming jar and the bottom with screw mechanism links to each other, elevator motor connects and drives screw mechanism, screw mechanism drives the platform roof is in it makes the piston motion in spreading the powder forming jar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920911007.7U CN210188486U (en) | 2019-06-17 | 2019-06-17 | SLM equipment send powder to spread powder device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920911007.7U CN210188486U (en) | 2019-06-17 | 2019-06-17 | SLM equipment send powder to spread powder device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210188486U true CN210188486U (en) | 2020-03-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920911007.7U Expired - Fee Related CN210188486U (en) | 2019-06-17 | 2019-06-17 | SLM equipment send powder to spread powder device |
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| Country | Link |
|---|---|
| CN (1) | CN210188486U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113510926A (en) * | 2020-12-09 | 2021-10-19 | 安徽工程大学 | SLM powder compaction and powder paving device |
| CN114570951A (en) * | 2022-03-21 | 2022-06-03 | 南京铖联激光科技有限公司 | 3D printer is with evenly spreading powder device |
-
2019
- 2019-06-17 CN CN201920911007.7U patent/CN210188486U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113510926A (en) * | 2020-12-09 | 2021-10-19 | 安徽工程大学 | SLM powder compaction and powder paving device |
| CN114570951A (en) * | 2022-03-21 | 2022-06-03 | 南京铖联激光科技有限公司 | 3D printer is with evenly spreading powder device |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200327 Termination date: 20200617 |