Wind field structure and additive manufacturing equipment
By designing an airflow structure in the 3D printing equipment and utilizing the different airflow distributions of the blowing and suction modules, as well as the design of the guide vanes, the problem of incomplete handling of splash residue and dust was solved, achieving efficient utilization of metal powder and improved quality of molded parts.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-04
- Publication Date
- 2026-03-24
AI Technical Summary
In existing 3D printing technologies, the wind field structure design is not ideal, resulting in incomplete handling of splash residue and dust, which affects printing quality and wastes precious metal powder. Furthermore, the large space design makes it difficult to limit the powder range, causing resource waste.
The system employs a wind field structure design, with the blowing module and suction module located above the printing platform. The blowing module, which is farther from the platform, has a stronger airflow, while the blowing module, which is closer to the platform, has a weaker airflow. Combined with the guide plate design, this achieves uniform airflow distribution, effectively removing splashed residue and dust. At the same time, the suction module collects the residue.
It improved printing quality, saved precious metal powder, reduced resource waste, and enhanced the production quality of molded parts.
Smart Images
Figure CN224026502U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of selective laser melting (SLM) metal 3D printing technology, in particular to a wind field structure and an additive manufacturing equipment with the same. BACKGROUND
[0002] The 3D printing industry prints layer by layer through laser sintering, and fine splashing residues and smoke dust are generated in the printing process. If these residues are not treated, firstly, the residues will fall on the printing surface, resulting in poor printing effect, and secondly, the fine residues will fly up and stick to the laser protection glass, causing the protection glass to be broken. Most of the industry uses a wind field to solve such problems.
[0003] Since the metal powder used for printing is also in the form of fine powder, the current wind field structure design of 3D printing is mostly not ideal, so that either the fine splashing residues generated in the printing process cannot be completely blown away, or the wind is too strong to affect the normal printing of the metal powder in the printing process, and the normally printed metal powder is blown away. In addition, most of the wind field structure designs are large space designs, which cannot guarantee the range of powder flying in the printing process, resulting in powder in the entire forming chamber, which is difficult to collect, causing waste, especially when printing precious metals, the precious metal powder is expensive, and the residues need to be collected in a small range to save costs and resources. In addition, if the splashing residues and smoke dust are not blown out of the forming chamber in time, they will fall on the normally printed metal powder, which will seriously affect the production quality of the processed formed parts. CONTENT OF THE INVENTION
[0004] The technical problem to be solved by the present application is to provide a wind field structure and an additive manufacturing equipment for effectively blowing and collecting metal residues to save costs and resources in view of the deficiencies of the prior art.
[0005] To solve the above technical problems, the technical solutions are as follows.
[0006] A wind field structure and an additive manufacturing equipment with the same are provided. The wind field structure comprises a forming cabin, a blowing module and a suction module. The bottom of the forming cabin is provided with a printing platform, the blowing module has at least two, and at least one suction module.
[0007] The blowing module and the suction module are both located above the printing platform, the blowing module is located on the first side of the printing platform, and the suction module is located on the other side opposite to the blowing module. The blowing module far from the printing platform has a higher wind strength when working, and the blowing module close to the printing platform has a relatively lower wind strength when working.
[0008] The application also provides an additive manufacturing device, comprising the wind field structure, and further comprising a powder laying system, a lifting bin system and an air path circulation system.
[0009] In the wind field structure and the additive manufacturing device with the same, since the blowing modules and the suction modules are located above the printing platform, the metal powder being normally printed on the printing platform will not be blown away when the wind is not too strong when processing the splashed residues and the smoke dust. In addition, the suction modules are located opposite to the blowing modules, and generally will not cause turbulence problems, and can better carry away the splashed residues and the smoke dust.
[0010] Meanwhile, since the blowing modules far away from the printing platform have stronger wind strength when working than the blowing modules close to the printing platform, and generally in actual work, the smoke dust and the splashed residues will also splash or float away from the printing platform, the blowing modules far away from the printing platform have higher wind strength when working, and can better carry away the splashed residues and the smoke dust. The blowing modules close to the printing platform have relatively lower wind strength when working, and can also carry away the remaining splashed residues and smoke dust, and will not blow away the normally working metal powder. Therefore, the wind field structure and the additive manufacturing device can effectively blow and collect the metal residues, remove the metal smoke dust, improve the quality of the processed parts, and save costs and resources. BRIEF DESCRIPTION OF DRAWINGS
[0011] In order to more clearly illustrate the technical solutions of the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description. Obviously, the drawings in the following description are only some embodiments of the application, and those skilled in the art can obtain other drawings according to these drawings without creative labor.
[0012] Figure 1 a perspective view of the wind field structure provided by the application;
[0013] Figure 2 a first cross-sectional view of the wind field structure provided by the application;
[0014] Figure 3 a second cross-sectional view of the wind field structure provided by the application;
[0015] Figure 4 a third cross-sectional view of the wind field structure provided by the application.
[0016] 11, forming cabin, 12, blowing module, 13, suction module, 14, observation window, 15, handrail, 111, printing platform, 121, blowing port, 122, blowing channel, 131, suction port, 132, suction channel, 133, mounting groove, 1221, first guide plate, 1321, second guide plate. DETAILED DESCRIPTION
[0017] In order to make the personnel in the technical field better understand the scheme of the present application, the present application will be further described in detail below in combination with the drawings and specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present application, but not a limitation on the scope of the rights of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor are within the scope of protection of the present application.
[0018] As shown in Figure 1 and Figure 2 , Figure 1 the three-dimensional structure of the wind field structure provided by the present application is shown, Figure 2 the first cross-sectional structure diagram of the wind field structure provided by the present application. The wind field structure comprises: a forming cabin 11, a blowing module 12, and a suction module 13. The bottom of the forming cabin 11 is provided with a printing platform 111, the blowing module 12 has at least two, and at least one suction module 13.
[0019] In an optional scheme, the wind field structure can also have more than two blowing modules 12.
[0020] In an optional scheme, the wind field structure can also have more than two suction modules 13, and all suction modules 13 have oppositely arranged blowing modules 12.
[0021] The main technical points of the wind field structure of the present application include the following two aspects. The first aspect is that the blowing module 12 and the suction module 13 are located above the printing platform 111, the blowing module 12 is located on the first side of the printing platform 111, and the suction module 13 is located on the other side opposite to the blowing module 12. The second aspect is that the blowing module 12 away from the printing platform 111 has a higher wind strength when working, and the blowing module 12 close to the printing platform 111 has a relatively lower wind strength when working. Specifically, the blowing module 12 away from the printing platform 111 has a stronger wind strength when working than the blowing module 12 close to the printing platform 111.
[0022] Since the air blowing module 12 and the air suction module 13 are both located above the printing platform 111, the metal powder being normally printed on the printing platform 111 will not be blown away if the air force is not too high when processing the splashed residue and the smoke dust. In addition, the air suction module 13 is located opposite to the air blowing module 12, and generally will not cause turbulence problems, and can better carry away the splashed residue and the smoke dust.
[0023] At the same time, since the air blowing module 12 far away from the printing platform 111 has a stronger air force when working than the air blowing module 12 close to the printing platform 111, and generally in actual work, the smoke dust and the splashed residue will also splash or float away from the printing platform 111, the air blowing module 12 far away from the printing platform 111 has a higher air force when working, which can better carry away the splashed residue and the smoke dust. The air blowing module 12 close to the printing platform 111 has a relatively low air force when working, which can also carry away the remaining splashed residue and smoke dust, and will not blow away the normally working metal powder.
[0024] As shown in Figure 3 and Figure 4 , Figure 3 is a second cross-sectional structure diagram of the wind field structure provided by the present application, Figure 4 is a third cross-sectional structure diagram of the wind field structure provided by the present application. The air blowing module 12 of the wind field structure includes an air blowing port 121 connected with an air blowing pump (not shown in the figure) and an air blowing channel 122 located between the air blowing port 121 and the forming cabin 11. A plurality of first flow guides 1221 are arranged in the air blowing channel 122, mainly for guiding flow. The first flow guides 1221 on the air blowing channel 122 in the area closer to the center of the air blowing port 121 are arranged more densely, and the first flow guides 1221 on the air blowing channel 122 in the area farther away from the center of the air blowing port 121 are arranged more sparsely. Generally, the initial air force of the area closer to the center of the air blowing port 121 will be relatively large, and the initial air force of the area farther away from the center of the air blowing port 121 will be relatively small. Through the special design of the above-mentioned first flow guides 1221, the air blowing air force of each area entering the forming cabin 11 from the first flow guides 1221 of a single air blowing module 12 is relatively uniform, avoiding that the area farther away from the center of the air blowing port 121 cannot carry away the splashed residue and the smoke dust.
[0025] As shown in Figure 4As shown, the air suction module 13 comprises an air suction port 131, an air suction passage 132 and a mounting groove 133, the air suction passage 132 is located between the air suction port 131 and the forming cabin 11. The air suction passage 132 is mounted on the mounting groove 133, and a second flow guide plate 1321 is arranged on the side close to the forming cabin 11, and no second flow guide plate 1321 is arranged on the side close to the air suction port 131. Similarly, the second flow guide plate 1321 also mainly plays a flow guiding role, and the second flow guide plate 1321 on the air suction passage 132 in the area closer to the center of the air suction port 131 is arranged more densely, and this design is also to achieve the effect of uniform air suction.
[0026] The air suction passage 132 is provided with a collection barrel (not shown in the figure) below the area where no second flow guide plate 1321 is arranged, and the collection barrel is used to collect the splashed residues and smoke dust.
[0027] In an optional scheme, an observation window 14 is further arranged on the front side wall of the forming cabin 11 of the wind field structure, and the observation window 14 is used to observe the progress of the printing work and the processing of the wind field structure on the splashed residues and smoke dust.
[0028] In an optional scheme, a handrail 15 is arranged on at least the left or right outer wall of the wind field structure, and the handrail 15 is used to facilitate the operation of the wind field structure by the auxiliary operator.
[0029] The application also provides an additive manufacturing equipment, which comprises the above-mentioned wind field structure, and further comprises a powder laying system (not shown in the figure), a lifting bin system (not shown in the figure) and an air circuit circulation system (not shown in the figure).
[0030] It should be noted that, in this document, the relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device inherent to the series of elements is included. Without more limitation, the element defined by the statement "includes a" does not exclude the presence of another same element in the process, method, article or device comprising the element. In addition, the above technical solutions provided by the embodiments of the present application have not been described in detail, which are consistent with the implementation principles of the corresponding technical solutions in the prior art, so as not to be too verbose.
[0031] The principles and implementation manners of the present application are described herein by using specific examples, and the above examples are only used to help understand the method of the present application and its core idea. It should be pointed out that, for ordinary skilled persons in the technical field, without departing from the principles of the present application, some improvements and modifications can be made to the present application, and each embodiment in the present application can be combined, and these improvements, modifications and combinations also fall within the protection scope of the claims of the present application.
Claims
1. A wind farm structure, characterized in that... It includes: a molding chamber (11), a blowing module (12), and a suction module (13); The bottom of the molding chamber (11) is provided with a printing platform (111), and there are at least two blowing modules (12) and at least one suction module (13); The blowing module (12) and the suction module (13) are both located above the printing platform (111). The blowing module (12) is located on the first side of the printing platform (111), and the suction module (13) is located on the other side opposite to the blowing module (12). The blower module (12) located away from the printing platform (111) has a stronger airflow when it is working than the blower module (12) located close to the printing platform (111).
2. The wind farm structure according to claim 1, characterized in that... The blowing module (12) includes an air outlet (121) and an air channel (122), the air channel (122) being located between the air outlet (121) and the molding chamber (11).
3. The wind farm structure according to claim 2, characterized in that... The air blowing channel (122) is provided with several first guide plates (1221). The first guide plates (1221) are arranged more densely in the area closer to the center of the air outlet (121) than in the area farther from the center of the air outlet (121).
4. The wind farm structure according to claim 1, characterized in that... The suction module (13) includes a suction port (131) and a suction channel (132), wherein the suction channel (132) is located between the suction port (131) and the forming chamber (11).
5. The wind farm structure according to claim 4, characterized in that... The wind farm structure also includes an installation slot (133), on which the air intake channel (132) is installed. A second guide plate (1321) is provided on the side near the forming chamber (11), but no second guide plate (1321) is provided on the side near the air intake (131).
6. The wind farm structure according to claim 5, characterized in that... On the air intake channel (132), the second guide plate (1321) is arranged more densely in the area closer to the center of the air intake (131) than in the area farther from the center of the air intake (131).
7. The wind farm structure according to claim 5, characterized in that... A collection bucket is provided below the area of the air intake channel (132) where the second guide plate (1321) is not provided, and the splashing residue and smoke are collected by the collection bucket.
8. The wind farm structure as described in claim 1, characterized in that, An observation window (14) is provided on the front side wall of the molding chamber (11) of the wind field structure to observe the progress of the printing work and the handling of splash residue and dust by the wind field structure.
9. The wind farm structure as described in claim 1, characterized in that, Handrails (15) are provided on at least the left or right outer wall of the wind farm structure to assist operators in operating the wind farm structure.
10. An additive manufacturing apparatus, characterized in that, include: The wind field structure of any one of claims 1-9 further includes a powder spreading system, a lifting chamber system, and an air circulation system.