CN217990940U - Multi-wavelength selective laser forming equipment - Google Patents
Multi-wavelength selective laser forming equipment Download PDFInfo
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- CN217990940U CN217990940U CN202222384008.5U CN202222384008U CN217990940U CN 217990940 U CN217990940 U CN 217990940U CN 202222384008 U CN202222384008 U CN 202222384008U CN 217990940 U CN217990940 U CN 217990940U
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Abstract
The utility model discloses a multi-wavelength selective laser forming device, which comprises a shell, a plurality of building bins, two powder overflowing bins, a powder spreader and a plurality of laser systems; a partition plate is arranged in the shell, the partition plate divides the inner space of the shell into an upper part and a lower part, and a plurality of U-shaped grooves are formed in the partition plate at intervals; the plurality of building bins are hung below the partition plates, the tops of the building bins are respectively arranged in the plurality of U-shaped grooves, and each building bin comprises a powder laying platform, a bin body and a powder pushing unit; the two powder overflowing bins are hung below the partition plates and are respectively arranged at two ends of the plurality of building bins; the laser systems are arranged on the outer side of the top of the machine shell, and the wave bands of laser emitted by the laser systems are different. The utility model discloses a laser forming equipment has a plurality of storehouses of building and different wave band laser system, can print the metal powder of different light absorptivity and reflectivity, has widened the scope that single equipment printed the material.
Description
Technical Field
The utility model discloses mechanical metal 3D prints and makes technical field, concretely relates to multi-wavelength selective laser forming equipment.
Background
The basic principle of Selective Laser Melting (SLM) is to divide a part into a plurality of two-dimensional cross sections according to the thickness of a fixed layer, and then selectively sinter a metal powder layer by layer according to a two-dimensional cross section pattern by utilizing a high-energy laser beam to obtain a final three-dimensional part.
During sintering, the metal powder needs to absorb sufficient laser energy to melt. Most SLM devices in the prior art conventionally use laser wavelength of 1060nm to 1080nm, and under the same wavelength laser irradiation condition, the light absorption rate and the reflectivity of different metal powder materials are different. Therefore, for powder materials (such as copper alloy) with relatively low effective absorption rate of laser energy in the 1060nm-1080nm waveband, in order to ensure that the metal powder can absorb enough energy, the traditional solution is to increase the total output energy of the laser. However, this material itself has a higher reflectivity for the laser light, is more easily reflected by the substrate, powder bed or sintered part, and the reflected laser light will be reflected back to the laser along the main optical path, a single way of increasing the total output energy may cause irreversible damage to the laser body. Therefore, for these high reflective materials (low absorption materials), lasers in a wavelength range other than 1060nm to 1080nm are currently on the market as energy sources, such as green SLM devices of device manufacturers trumppf, which print copper alloys using short wavelength laser light with a wavelength of 532nm because the optical absorption of 532nm laser light by copper alloys is much higher than 1060nm to 1080nm laser light.
However, existing SLM devices all use laser light of approximately a single wavelength, whether single-laser devices or multi-laser devices, and whether 1060nm to 1080nm band laser light or 532nm approximate wavelength laser light.
Meanwhile, the range of printable materials of the SLM process is continuously innovated and expanded, and the existing 1060-1080nm and 532nm lasers cannot completely meet the requirements of new metal powder materials in the future.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a utility model aims at providing a multi-wavelength election district laser forming equipment has the laser of a plurality of different wave bands, can be applicable to the metal powder printing operation of different light absorptivity and reflectivity.
In order to achieve the purpose of the utility model, the utility model adopts the technical proposal that: a multi-wavelength selective laser forming device comprises a machine shell, a plurality of building bins, two powder overflowing bins, a powder spreading device and a plurality of laser systems; a partition plate is arranged in the shell, the partition plate divides the inner space of the shell into an upper part and a lower part, and a plurality of U-shaped grooves are formed in the partition plate at intervals; the plurality of building bins are hung below the partition plates, the tops of the building bins are respectively arranged in the plurality of U-shaped grooves, and each building bin comprises a powder laying platform, a bin body and a powder pushing unit; the two powder overflowing bins are hung below the partition plates and are respectively arranged at two ends of the plurality of building bins; the laser systems are arranged on the outer side of the top of the machine shell, and the wave bands of laser emitted by the laser systems are different.
Furthermore, the powder laying platform is a square plate with a certain thickness and is arranged in the U-shaped groove;
the powder paving platform is provided with a printing port.
Further, the bin body is fixed below the powder laying platform, and the top of the bin body is abutted with the bottom of the powder laying platform; the bin body is provided with a powder cavity for containing metal powder and a telescopic movable cavity, the powder cavity and the telescopic movable cavity are respectively positioned at the upper part and the lower part of the bin body, and the powder cavity and the telescopic movable cavity are communicated with each other.
Furthermore, the bin body is provided with a limit table in the telescopic movable cavity.
Further, the powder pushing unit comprises a printing platform, a guide rod, a linear bearing, a lifting shaft and a lifting driving motor; the printing platform activity sets up in the powder cavity, linear bearing sets up spacing bench, the guide bar upper end with printing platform fixed connection, the lower extreme of guide bar is free, lift axle one end with lift driving motor connects, the other end with printing platform fixed connection.
Further, the guide rod is disposed in the linear bearing and moves up and down through the linear bearing.
Furthermore, the top plate of the machine shell is correspondingly provided with a plurality of laser windows above the plurality of construction bins, and the plurality of lasers are respectively arranged near the plurality of laser windows.
Furthermore, the laser system comprises a laser, a collimating lens, a beam expanding lens, a scanning vibrating lens and an F-theta focusing lens, and laser emitted by the laser is controlled by the scanning lens to deflect and then is emitted into the shell from the laser window and projected onto the construction bin.
Further, the number of the construction bins is at least 2, and the number of the laser systems is equal to the number of the construction bins.
Further, the multi-wavelength selective laser forming equipment also comprises a control system, and the control system is connected with the plurality of laser systems, the powder paving device and the plurality of powder pushing units
Because of the application of the technical scheme, compared with the prior art, the utility model has the following advantages:
the utility model discloses a laser forming equipment has a plurality of storehouses of building and different wave band laser system, makes the utility model discloses a laser forming equipment can accomplish the printing operation to the metal powder of different light absorptivity and reflectivity, has widened the scope that single unit equipment printed the material, has created platform and better condition for the research of same material adoption different wave band laser beam machining simultaneously.
Drawings
Fig. 1 is a schematic structural view of the multi-wavelength selective laser forming apparatus of the present invention;
fig. 2 is a perspective view of the construction bin of the present invention;
fig. 3 is a cross-sectional view of the construction bin of the present invention.
Wherein: 1. a housing; 11. a partition plate; 12. a laser window; 2. constructing a bin; 20. a powder laying platform; 21. A bin body; 210. a powder chamber; 211. a flexible movable cavity; 22. a powder pushing unit; 221. a printing platform; 222. a lift drive; 223. a guide bar; 224. a lifting shaft; 225. a lifting drive motor; 3. a powder overflowing bin; 4. a powder spreader; 5. a laser system.
Detailed Description
In order to make the above objects, features and advantages of the present invention more clearly understandable, the present invention is further described in detail below with reference to the accompanying drawings and the detailed description, wherein the drawings are simplified schematic drawings, which only schematically illustrate the basic structure of the present invention, and therefore only show the components related to the present invention, and it is to be noted that the embodiments and features of the embodiments in the present application can be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
Referring to fig. 1, a multi-wavelength selective laser forming apparatus includes a housing 1, a plurality of building bins 2, two powder overflow bins 3, a powder spreader 4 and a plurality of laser systems 5.
The machine shell 1 is internally provided with a partition plate 11, the partition plate 11 is arranged at the middle-upper part of the machine shell 1 and divides the inner space of the machine shell 1 into an upper part and a lower part, a plurality of U-shaped grooves are arranged on the partition plate 11 at intervals, and the U-shaped grooves extend along the thickness direction of the partition plate 11 and penetrate through the partition plate 11.
A plurality of construction storehouse 2 hang in the below of baffle 11, and the top of construction storehouse 2 sets up respectively in a plurality of U type grooves. The construction bin 2 comprises a powder laying platform 20, a bin body 21 and a powder pushing unit 22. Shop's powder platform 20 is the square plate body that has certain thickness, and shop's powder platform 20 sets up in U type groove. The powder spreading platform 20 is provided with a printing port, the printing port extends along the thickness direction of the powder spreading platform 20 and penetrates through the powder spreading platform 20, and the printing port is square or rectangular. The storehouse body 21 is fixed in the below of shop's powder platform 20, the top of the storehouse body 21 and the bottom looks butt of shop's powder platform 20, the storehouse body 21 has a powder cavity 210 and a flexible movable cavity 211 that hold metal powder, powder cavity 210 and flexible movable cavity 211 are located the upper portion and the lower part at the storehouse body 21 respectively, and powder cavity 210 position and flexible movable cavity 211 communicate each other, powder cavity 210 sets up under printing the mouth, the cavity wall of powder cavity 210 and the inner wall parallel and level of printing the mouth. The bin body 21 is provided with a limit table in the telescopic movable cavity 211. The powder pushing unit 22 comprises a printing platform 221, a guide rod 223, a linear bearing 222, a lifting shaft 224 and a lifting driving motor 225, wherein the printing platform 221 is formed by combining a plurality of plane plates and sequentially comprises a base plate, a leveling plate and a sealing plate from top to bottom, and the printing platform 221 is movably arranged in the powder cavity 210. The linear bearing 222 is disposed on the limit table, the upper end of the guide rod 223 is fixedly connected to the sealing plate of the printing platform 221, and the lower end of the guide rod 223 is free. The guide rod 223 is disposed in the linear bearing 222 and moves up and down through the linear bearing 222; one end of the lifting shaft 224 is connected with a lifting driving motor 225, the other end is fixedly connected with the sealing plate, and the driving motor drives the printing platform 221 to move up and down in the powder cavity 210, so that the powder in the powder cavity 210 is continuously pushed towards the powder spreading platform 20.
The two powder overflowing bins 3 are hung below the partition plates 11 and are respectively arranged at two ends of the plurality of building bins 2.
The powder spreader 4 is arranged above the plurality of construction bins 2 and is connected with the machine shell 1 in a sliding way.
The laser system 5 comprises a laser, a collimating lens, a beam expanding lens, a scanning galvanometer and an F-theta focusing lens. The laser window 12 has been seted up at every 2 top positions of building up the storehouse to casing 1 roof, and a plurality of laser system 5 set up in the casing 1 top outside to divide and establish near a plurality of laser windows 12, the laser that the laser instrument sent is through vibrating mirror control deflection back from laser window 12 penetrate into in the powder cavity 210 and throw on building up the storehouse, thereby accomplish the 3D of work piece and print.
The laser bands emitted by the lasers are different, the lasers in different bands can complete printing operation on metal powder with different light absorptivity and reflectivity, and the range of printing materials by single equipment is widened.
Preferably, the laser system 5 may also be a three-axis dynamic focusing system.
Preferably, the number of building bins 2 is at least 2, and the number of laser systems 5 is equal to the number of building bins 2.
The multi-wavelength selective laser forming equipment further comprises a control system, the control system is connected with the laser systems 5, the powder spreading device 4 and the powder pushing units 22, and the control system controls the workpiece to be printed.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art through specific situations.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to the above-described embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A multi-wavelength selective laser forming device is characterized in that:
the powder spraying device comprises a machine shell, a plurality of building bins, two powder overflowing bins, a powder spreader and a plurality of laser systems;
a partition plate is arranged in the shell, the partition plate divides the inner space of the shell into an upper part and a lower part, and a plurality of U-shaped grooves are formed in the partition plate at intervals;
the plurality of building bins are hung below the partition plates, the tops of the building bins are respectively arranged in the plurality of U-shaped grooves, and each building bin comprises a powder laying platform, a bin body and a powder pushing unit;
the two powder overflowing bins are hung below the partition plates and are respectively arranged at two ends of the plurality of building bins;
the laser systems are arranged on the outer side of the top of the machine shell, and the wave bands of laser emitted by the laser systems are different.
2. A multi-wavelength selective laser shaping apparatus according to claim 1, wherein:
the powder laying platform is a square plate body with a certain thickness, and is arranged in the U-shaped groove;
and a printing port is formed in the powder laying platform.
3. A multiple wavelength selective laser shaping apparatus according to claim 2, wherein:
the bin body is fixed below the powder spreading platform, and the top of the bin body is abutted against the bottom of the powder spreading platform;
the bin body is provided with a powder cavity for containing metal powder and a telescopic movable cavity, the powder cavity and the telescopic movable cavity are respectively positioned at the upper part and the lower part of the bin body, and the powder cavity and the telescopic movable cavity are communicated with each other.
4. A multi-wavelength selective laser shaping apparatus according to claim 3, wherein:
the bin body is provided with a limit table in the telescopic movable cavity.
5. A multi-wavelength selective laser shaping apparatus according to claim 4, wherein:
the powder pushing unit comprises a printing platform, a guide rod, a linear bearing, a lifting shaft and a lifting driving motor;
the activity of print platform sets up in the powder cavity, linear bearing sets up spacing bench, the guide bar upper end with print platform fixed connection, the lower extreme of guide bar is free, lift axle one end with lift driving motor connects, the other end with print platform fixed connection.
6. A multi-wavelength selective laser shaping apparatus according to claim 5, wherein:
the guide rod is arranged in the linear bearing and penetrates through the linear bearing to move up and down.
7. A multi-wavelength selective laser shaping apparatus according to claim 1, wherein:
the top plate of the machine shell is correspondingly provided with a plurality of laser windows above the plurality of construction bins, and the plurality of lasers are respectively arranged near the plurality of laser windows.
8. A multi-wavelength selective laser shaping apparatus according to claim 7, wherein:
the laser system comprises a laser, a collimating lens, a beam expanding lens, a scanning galvanometer and an F-theta focusing lens, and laser emitted by the laser is emitted into the shell from the laser window and projected onto the construction bin after being deflected by the control of the scanning galvanometer.
9. A multi-wavelength selective laser shaping apparatus according to claim 1, wherein:
the number of the construction bins is at least 2, and the number of the laser systems is equal to that of the construction bins.
10. A multi-wavelength selective laser shaping apparatus according to claim 1, wherein:
the multi-wavelength selective laser forming equipment further comprises a control system, and the control system is connected with the plurality of laser systems, the powder paving device and the plurality of powder pushing units.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222384008.5U CN217990940U (en) | 2022-09-08 | 2022-09-08 | Multi-wavelength selective laser forming equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222384008.5U CN217990940U (en) | 2022-09-08 | 2022-09-08 | Multi-wavelength selective laser forming equipment |
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| CN217990940U true CN217990940U (en) | 2022-12-09 |
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| CN202222384008.5U Active CN217990940U (en) | 2022-09-08 | 2022-09-08 | Multi-wavelength selective laser forming equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115647394A (en) * | 2022-12-12 | 2023-01-31 | 苏州倍丰智能科技有限公司 | Selective laser melting forming equipment capable of realizing continuous production |
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2022
- 2022-09-08 CN CN202222384008.5U patent/CN217990940U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115647394A (en) * | 2022-12-12 | 2023-01-31 | 苏州倍丰智能科技有限公司 | Selective laser melting forming equipment capable of realizing continuous production |
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