CN222058823U - Laser selective melting 3D printing equipment and powder paving device thereof - Google Patents
Laser selective melting 3D printing equipment and powder paving device thereof Download PDFInfo
- Publication number
- CN222058823U CN222058823U CN202420172955.4U CN202420172955U CN222058823U CN 222058823 U CN222058823 U CN 222058823U CN 202420172955 U CN202420172955 U CN 202420172955U CN 222058823 U CN222058823 U CN 222058823U
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- powder
- powder spreading
- spreading device
- assembly
- outlet
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- 239000000843 powder Substances 0.000 title claims abstract description 131
- 238000002844 melting Methods 0.000 title claims abstract description 16
- 230000008018 melting Effects 0.000 title claims abstract description 16
- 238000010146 3D printing Methods 0.000 title claims abstract description 13
- 238000003892 spreading Methods 0.000 claims abstract description 46
- 238000007790 scraping Methods 0.000 claims abstract description 5
- 230000001154 acute effect Effects 0.000 claims description 3
- 239000002184 metal Substances 0.000 abstract description 25
- 238000000034 method Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 7
- 230000003028 elevating effect Effects 0.000 abstract description 2
- 238000003754 machining Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The utility model relates to laser selective melting 3D printing equipment and a powder spreading device thereof, wherein the powder spreading device comprises an operation table and a powder spreading component; the operating platform is provided with a powder outlet and a lifting platform; the powder spreading assembly comprises a scraper for scraping powder at the powder outlet to the lifting table and a roller for flattening the powder on the lifting table. The scraper of shop's powder device removes along the operation panel, can pass the elevating platform with metal powder to strickle in the passing process, the gyro wheel then rolls on metal powder after strickleing, flattens the metal powder of spreading, makes the metal powder of laying more real more level and more smooth, lets the product surface effect after 3D scanning prints better.
Description
Technical Field
The utility model relates to the field of 3D printing, in particular to laser selective melting 3D printing equipment and a powder paving device thereof.
Background
The laser selective melting technology (SLM) is a method for manufacturing metal additives, in the process of machining, a laser emits laser, the laser irradiates a machining plane after being processed by an optical system, under the control of a control system, the laser scans a powder bed paved by metal powder according to a contour curve calculated by an STL file of the system, and the steps are repeated to finish the fusion forming of a plurality of slices.
The existing powder spreading mechanism adopts a powder discharging mechanism to place added powder on a platform, and the powder pair with the powder linearly distributed is scraped and leveled by a movable scraper, so that the powder spreading is not uniformly and compactly distributed, and the laser scanning melting effect is poor.
Disclosure of utility model
The utility model aims to solve the technical problem of providing a laser selective melting 3D printing device and a powder paving device thereof aiming at the defects in the prior art.
The technical scheme adopted for solving the technical problems is as follows: constructing a powder spreading device of laser selective melting 3D printing equipment, which comprises an operation table and a powder spreading assembly;
The operating platform is provided with a powder outlet and a lifting platform;
The powder paving assembly comprises a scraper for scraping powder at the powder outlet to the lifting table and a roller for flattening the powder on the lifting table.
In some embodiments, the powder outlet is disposed along a side of the console where the powder outlet is located.
In some embodiments, two opposite sides of the operation table are respectively provided with a powder outlet.
In some embodiments, the powder spreading assembly includes two doctor blades on either side of the roller.
In some embodiments, the moving direction of the scraper is perpendicular to the extending direction of the powder outlet or forms an acute included angle.
In some embodiments, the powder spreading device further comprises a driving assembly driving the powder spreading assembly to reciprocate so as to spread the powder of the powder outlet to the lifting platform.
In some embodiments, the driving assembly comprises a movable seat for mounting the powder paving assembly, and a driving mechanism for driving the movable seat to reciprocate.
In some embodiments, the driving mechanism comprises a motor and a screw, the motor drives the screw to rotate, and the screw rotates to drive the movable seat to move.
In some embodiments, the drive assembly further comprises a guide mechanism that guides the traveling block, the guide mechanism comprising a guide bar for slidably mounting the traveling block.
A laser selective melting 3D printing device comprises the powder spreading device.
The laser selective melting 3D printing equipment and the powder paving device thereof have the following beneficial effects: the scraper of shop's powder device removes along the operation panel, can pass the elevating platform with metal powder to strickle in the passing process, the gyro wheel then rolls on metal powder after strickleing, flattens the metal powder of spreading, makes the metal powder of laying more real more level and more smooth, lets the product surface effect after 3D scanning prints better.
Drawings
The utility model will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic diagram of a powder spreading device of a laser selective melting 3D printing apparatus in an embodiment of the present utility model;
Fig. 2 is a schematic view of the powder spreading device in fig. 1 at another angle.
Detailed Description
For a clearer understanding of technical features, objects and effects of the present utility model, a detailed description of embodiments of the present utility model will be made with reference to the accompanying drawings.
As shown in fig. 1 and 2, the laser selective melting 3D printing apparatus in a preferred embodiment of the present utility model includes a table 1 and a powder spreading device 2, the powder spreading device 2 being disposed on the table 1. The powder spreading device 2 comprises an operation table 21 and a powder spreading assembly 22, wherein a powder outlet 211 and a lifting table 212 capable of being arranged in a lifting mode are arranged on the operation table 21, an operation opening 213 for installing the lifting table 212 is arranged on the operation table 21, the lifting table 212 is installed in the operation opening 213 and can lift in the operation opening 213, after the upper surface of the lifting table 212 is lower than the upper surface of the operation table 21, a step is formed, and metal powder of the powder outlet 211 can be spread on the lifting table 212.
The powder spreading assembly 22 comprises a scraper 221 for scraping powder from the powder outlet 211 to the lifting platform 212 and a roller 222 for compacting the powder on the lifting platform 212, after the metal powder from the powder outlet 211 comes out, the scraper 221 moves along the operating platform 21 to push the metal powder onto the lifting platform 212 and is scraped in the pushing process, the roller 222 rolls on the metal powder after being scraped to flatten the flattened metal powder, so that the paved metal powder is more solid and flat, and the 3D scanning printing effect is good.
The powder spreading device 2 can spread metal powder and the like on the workbench 1, and is used for scraping and compacting, the surface of a sample formed by heating and melting the metal powder by the light emitted by the laser emitting device is flatter, the laser scanning melting effect is good, and the appearance effect is attractive.
The powder outlet 211 is arranged along the side edge of the operating platform 21, so that the metal powder of the powder outlet 211 can be directly scraped to the lifting platform 212 when the scraper 221 moves laterally. Preferably, the moving direction of the scraper 221 is perpendicular to the extending direction of the powder outlet 211, so that the scraper 221 moves transversely to the powder outlet 211 and scrapes the metal powder onto the lifting platform 212, and in other embodiments, the moving direction of the scraper 221 and the extending direction of the powder outlet 211 may form an acute angle, so that the scraper 221 can scrape the metal powder onto the lifting platform 212 when moving towards the powder outlet 211.
Preferably, two opposite sides of the operation table 21 are respectively provided with a powder outlet 211, the powder spreading assembly 22 comprises two scrapers 221 positioned at two sides of the roller 222, and metal powder of the two powder outlets 211 is scraped to the lifting table 212 respectively, so that powder spreading and compaction can be realized in the process of moving the powder spreading assembly 22 back and forth, the powder spreading efficiency can be improved, and meanwhile, the collection of redundant powder in the last powder spreading process can be realized.
Generally, the powder paving device 2 further comprises a driving assembly 23 for driving the powder paving assembly 22 to reciprocate so as to pave the powder at the powder outlet 211 to the workbench 1, realize automatic control of powder paving and improve powder paving efficiency.
Further, the driving assembly 23 includes a moving seat 231 for mounting the powder paving assembly 22, and a driving mechanism 232 driving the moving seat 231 to reciprocate, the powder paving assembly 22 can be mounted on the moving seat 231 and connected with the moving seat 231, and when the driving mechanism 232 drives the moving seat 231 to reciprocate, the powder paving assembly 22 is also driven to reciprocate.
In this embodiment, the driving mechanism 232 includes a motor 2321 and a screw 2322, and when the motor 2321 operates, the screw 2322 is driven to rotate, and the screw 2322 rotates to drive the movable seat 231 to move along the axial direction of the screw 2322. Meanwhile, the driving assembly 23 further includes a guiding mechanism for guiding the movable seat 231, and the guiding mechanism includes a guiding rod 233 for slidably mounting the movable seat 231, so that the guiding rod 233 guides the moving direction of the movable seat 231.
Two ends of the roller 222 are respectively provided with a movable seat 231, and the two movable seats 231 can be respectively matched with the screw 2322 and the guide rod 233 to drive the scraper 221 and the roller 222 to move.
In other embodiments, the driving mechanism 232 may also include a motor 2321 and a guide rail, where the movable seat 231 is slidably matched with the guide rail, so that the motor 2321 drives the movable seat 231 to move back and forth on the guide rail, so as to implement the back and forth powder spreading action of the powder spreading assembly 22.
After the powder paving device 2 lays the metal powder on the lifting table 212, the laser emission device can emit laser to the lifting table 212 to melt and bond the laid powder, continuously lay the metal powder and melt, stack the metal powder on a lower layer of melted substrate, circularly lay and melt according to graphic data set by an STL file of the system, and print the three-dimensional object.
After the compacted powder is melted, the surface of the powder is finer and smoother, and the surface of the printed product is better.
It will be appreciated that the above technical features may be used in any combination without limitation.
The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.
Claims (10)
1. The powder spreading device of the laser selective melting 3D printing equipment is characterized by comprising an operation table (21) and a powder spreading assembly (22);
the operation table (21) is provided with a powder outlet (211) and a lifting table (212);
The powder spreading assembly (22) comprises a scraper (221) for scraping powder from the powder outlet (211) to the lifting table (212), and a roller (222) for flattening the powder on the lifting table (212).
2. Powder spreading device according to claim 1, characterized in that the powder outlet (211) is arranged along the side of the operating table (21) where it is located.
3. Powder spreading device according to claim 1, wherein the two opposite sides of the operating table (21) are provided with powder outlets (211) respectively.
4. A powder spreading device according to claim 3, characterized in that the powder spreading assembly (22) comprises two scrapers (221) located on both sides of the roller (222).
5. Powder spreading device according to any one of claims 1 to 4, wherein the direction of movement of the scraper (221) is perpendicular or at an acute angle to the direction of extension of the outlet opening (211).
6. A powder spreading device according to any one of claims 1-4, wherein the powder spreading device (2) further comprises a drive assembly (23) driving the powder spreading assembly (22) to reciprocate for spreading the powder of the powder outlet (211) to the lifting table (212).
7. A powder spreading device according to claim 6, wherein the drive assembly (23) comprises a moving seat (231) for mounting the powder spreading assembly (22), and a drive mechanism (232) for driving the moving seat (231) to reciprocate.
8. The powder spreading device according to claim 7, wherein the driving mechanism (232) comprises a motor (2321) and a screw (2322), the motor (2321) drives the screw (2322) to rotate, and the screw (2322) rotates to drive the movable seat (231) to move.
9. Powder spreading device according to claim 7, characterized in that the drive assembly (23) further comprises a guiding mechanism guiding the moving seat (231), the guiding mechanism comprising a guiding rod (233) for sliding mounting of the moving seat (231).
10. A laser selective melting 3D printing device, characterized by comprising a powder spreading device (2) according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420172955.4U CN222058823U (en) | 2024-01-23 | 2024-01-23 | Laser selective melting 3D printing equipment and powder paving device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420172955.4U CN222058823U (en) | 2024-01-23 | 2024-01-23 | Laser selective melting 3D printing equipment and powder paving device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222058823U true CN222058823U (en) | 2024-11-26 |
Family
ID=93543071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420172955.4U Active CN222058823U (en) | 2024-01-23 | 2024-01-23 | Laser selective melting 3D printing equipment and powder paving device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222058823U (en) |
-
2024
- 2024-01-23 CN CN202420172955.4U patent/CN222058823U/en active Active
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