Powder cleaning device for SLM (selective laser melting) process
By designing a powder cleaning device for SLM process, including a carrier plate and a recycling bin, the powder cleaning problem in the SLM process is solved, and efficient powder cleaning and recycling is achieved, which is convenient to operate and safe.
Patent Information
- Application Number
- CN202421197551.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-29
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-05-29
AI Technical Summary
In the SLM process, the temporary support structure at the bottom and suspended parts and the residual powder in the inner cavity of the part are difficult to efficiently clean, resulting in waste of materials, difficulty in removing support and impact on the performance of the part. The cleaning methods of the prior art have problems such as powder scattering, low safety and high labor intensity.
A powder cleaning device for the SLM process is designed, including a carrier plate and a recycling bin. The bearing plate is detachably connected to the substrate. By setting the first, second and third support surfaces, the bearing plate can be turned upside down on the top of the recycling bin, and the rolling parts and limiting plates are used to improve operational convenience and safety, so as to achieve effective cleaning and recycling of powder.
By turning the substrate inverted, the device facilitates cleaning and recycling of powder in the support and the inner cavity of the parts. It is easy to operate and has high safety, avoiding the problems of powder scattering and labor intensity, and achieving efficient recycling and utilization of powder.
Smart Images
Figure CN222588125U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of additive manufacturing, and in particular to a powder cleaning device for a SLM process. Background Art
[0002] Selective laser melting (SLM) is an advanced metal additive manufacturing technology. This technology uses laser as the energy source and scans the metal powder bed layer by layer according to the path planned in the 3D CAD slice model. The scanned metal powder is melted and solidified to achieve the metallurgical bonding effect, and finally the metal parts designed by the model are obtained. Since the SLM process has significant advantages in manufacturing metal parts with complex geometric shapes, it is widely used in aerospace, automotive, medical and other fields.
[0003] In the SLM process, temporary support structures are usually added to the bottom and suspended parts of the parts to ensure the molding, performance and dimensional stability of the parts. These support structures need to be removed after printing to obtain the final unsupported parts. However, these support structures and the inner cavity of the parts will have a lot of residual powder. If they are not cleaned up, it will not only waste materials, but also increase the difficulty of subsequent support removal. In addition, the residual powder in the inner cavity of the part will gradually solidify after heat treatment and wire cutting, which will also have an adverse effect on the use of the part.
[0004] At present, the residual powder is usually cleaned by compressed air blowing and manual knocking after hanging upside down. The compressed air blowing method will cause a large amount of residual powder to fly, which cannot be recovered and worsens the working environment. The manual knocking method after hanging upside down has problems such as low safety, troublesome replacement, and high labor intensity. Utility Model Content
[0005] In view of the defects in the prior art, the purpose of the utility model is to provide a powder cleaning device for SLM process to solve or alleviate one of the above-mentioned problems existing in the prior art.
[0006] In order to achieve the above object, the utility model provides a powder cleaning device for SLM process, comprising:
[0007] a carrying plate, which is provided with a handle and is detachably connected to the base plate; and
[0008] The recovery bin is fixedly mounted on the frame, and the tops of the side walls on both sides thereof are provided with a first supporting surface, a second supporting surface and a third supporting surface matching the bearing plate;
[0009] The second supporting surface is horizontally arranged, the first supporting surface and the third supporting surface are symmetrically arranged at two ends of the second supporting surface, and the first supporting surface and the third supporting surface are both inclined.
[0010] Furthermore, two carrying plates are provided, and the two carrying plates are respectively provided at two ends of the base plate.
[0011] Furthermore, the second supporting surface is located at a higher end of the first supporting surface and the third supporting surface.
[0012] Furthermore, a plurality of rolling elements are arranged on the bearing plate or the first supporting surface, the second supporting surface and the third supporting surface.
[0013] Furthermore, the rolling element is a bearing, and the bearing is rotatably connected to the bearing plate.
[0014] Furthermore, limiting plates matching the ends of the carrying plate are provided on both sides of the recovery bin.
[0015] Furthermore, the bottom of the recovery bin is funnel-shaped.
[0016] Furthermore, an inclination angle between the first supporting surface and the second supporting surface is α, wherein 30°≤α≤60°.
[0017] Furthermore, the carrying plate is provided with a handle.
[0018] Beneficial effects of the utility model:
[0019] The powder cleaning device for SLM process provided by the utility model is provided with a carrier plate and a recovery bin, and the substrate is inverted on the top of the recovery bin through the carrier plate, thereby achieving the purpose of facilitating the cleaning and recovery of the powder in the support and the inner cavity of the part, and the operation is convenient and the safety is high. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.
[0021] Figure 1 A three-dimensional view of a powder cleaning device for SLM process provided by an embodiment of the utility model;
[0022] Figure 2 for Figure 1 A three-dimensional view of the powder cleaning device for SLM process in another direction;
[0023] Figure 3 for Figure 2 An enlarged view of part A of a powder cleaning device for an SLM process is shown;
[0024] Figure 4 for Figure 1 A combined three-dimensional view of a carrier plate and a base plate of a powder cleaning device for an SLM process is shown.
[0025] Reference numerals:
[0026] 100, load-bearing plate; 110, handle; 200, recovery bin; 210, first support surface; 220, second support surface; 230, third support surface; 300, bolt; 400, frame; 410, limit plate; 500, rolling element; 600, base plate. DETAILED DESCRIPTION
[0027] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.
[0028] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which the utility model belongs.
[0029] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0030] In addition, the terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present utility model, the meaning of "plurality" is more than two, unless otherwise clearly and specifically limited.
[0031] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.
[0032] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0033] like Figure 1-4 As shown, the utility model provides a powder cleaning device for SLM process, including a carrying plate 100 and a recovery bin 200 .
[0034] The carrying plate 100 is detachably connected to the base plate 600. Specifically, in the present embodiment, the carrying plate 100 is detachably connected to the base plate 600 by bolts 300. Specifically, there can be one or two carrying plates 100. When there is only one carrying plate 100, the length of the carrying plate 100 is greater than the length of the base plate 600, so that the base plate 600 can be completely inverted on the top of the recovery bin 200.
[0035] When there are two carrying plates 100 , the two carrying plates 100 are respectively disposed at two ends of the base plate 600 , so as to achieve the purpose of completely inverting the base plate 600 on the top of the recovery bin 200 .
[0036] In this embodiment, there are two carrier plates 100 , so that the size of the carrier plate 100 can be reduced, thereby reducing the overall weight when the carrier plate 100 is connected to the substrate 600 , thereby achieving the purpose of facilitating operation.
[0037] The recycling bin 200 is fixedly mounted on the frame 400, and the tops of the side walls on both sides of the recycling bin 200 are provided with a first supporting surface 210, a second supporting surface 220, and a third supporting surface 230 that match the carrying plate 100. The first supporting surface 210, the second supporting surface 220, and the third supporting surface 230 are used to support the carrying plate 100, so that the substrate 600 can be inverted on the top of the recycling bin 200.
[0038] The second support surface 220 is horizontally arranged, the first support surface 210 and the third support surface 230 are symmetrically arranged at both ends of the second support surface 220, and the first support surface 210 and the third support surface 230 are both inclined. Specifically, the first support surface 210 and the second support surface 230 can be inclined downward at the same time (that is, the second support surface is located at the higher end of the first support surface 210 and the third support surface 230), and the first support surface 210 and the second support surface 230 can also be inclined upward at the same time (that is, the second support surface is located at the lower end of the first support surface 210 and the third support surface 230). Preferably, the second support surface 220 is located at the higher end of the first support surface 210 and the third support surface 230, so that when the carrier plate 100 is on the first support surface 210 and the third support surface 230, the substrate 600 and the parts are inclined toward the middle of the recovery bin 200, thereby achieving the purpose of reducing the size of the recovery bin 200.
[0039] Specifically, the inclination angle of the first support surface 210 and the second support surface 220 is alpha, wherein 30°≤α≤60°. In this embodiment, the inclination angles α of the first support surface 210 and the second support surface 220 are both 45°.
[0040] When in use, after the part is printed, first, the carrier plate 100 is connected to the base plate 600 by the bolts 300; then, the base plate 600 is turned upside down on the recovery bin 200, and the first support surface 210, the second support surface 220 and the third support surface 230 cooperate with the carrier plate 100 to support the base plate 600 and the part on the top of the recovery bin 200, so that the base plate 600 and the part will not fall down, and then, the powder in the support and the inner cavity of the part is separated by manual knocking or pneumatic vibration.
[0041] During this process, when the supporting plate 100 is located on the second supporting surface 220, the substrate 600 is vertically inverted on the top of the recovery bin 200; when the supporting plate 100 is located on the first supporting surface 210 or the third supporting surface 230, the substrate 600 is tilted and inverted on the top of the recovery bin 200; and when the supporting plate 100 is located on the first supporting surface 210 and on the third supporting surface 230, the tilt direction of the substrate 600 is opposite, thereby achieving the purpose of completely cleaning out the powder in the parts and support cavity.
[0042] At the same time, the cleaned powder falls into the recovery bin 200, thereby achieving the purpose of recycling the powder.
[0043] Preferably, a handle 110 is provided on the carrying plate 100 to facilitate flipping and moving the carrying plate 100 .
[0044] In one embodiment, a plurality of rolling elements 500 are disposed on the carrier plate 100 or the first support surface 210, the second support surface 220, and the third support surface 230. Specifically, when the carrier plate 100 is provided with rolling elements 500, the first support surface 210, the second support surface 220, and the third support surface 230 are not provided with rolling elements 500; when the carrier plate 100 is not provided with rolling elements 500, the first support surface 210, the second support surface 220, and the third support surface 230 are all provided with rolling elements 500.
[0045] In this embodiment, a rolling member 500 is provided on the carrier plate 100 or the first support surface 210, the second support surface 220 and the third support surface 230 to reduce the friction between the carrier plate 100 and the first support surface 210, the second support surface 220 and the third support surface 230, thereby facilitating the movement of the combination of the carrier plate 100 and the substrate 600. In this embodiment, the rolling member 500 is provided on the carrier plate 100.
[0046] Specifically, the rolling element 500 can be a roller, a universal ball, a bearing, etc. Preferably, the rolling element 500 is a bearing, and the bearing is rotatably connected to the bearing plate 100. The rolling element 500 of this structure has a simple structure, small friction, and is easy to install, manufacture and replace.
[0047] In one embodiment, both sides of the recycling bin 200 are provided with stopper plates 410 that match the ends of the carrier plate 100. Specifically, the stopper plates 410 are fixedly connected to the frame 400. When the combination of the carrier plate 100 and the base plate 600 is inverted on the top of the recycling bin 200, the ends of the carrier plate 100 collide with the stopper plates 410, so that the combination of the carrier plate 100 and the base plate 600 will not deviate when moving between the first support surface 210, the second support surface 220 and the third support surface 230, thereby achieving the purpose of facilitating the movement of the combination of the carrier plate 100 and the base plate 600.
[0048] Preferably, the bottom of the recovery bin 200 is funnel-shaped to facilitate recovery of the powder in the recovery bin 200 .
[0049] Preferably, there is an exhaust fan behind the recovery bin 200, and the air outlet of the exhaust fan extends through a pipe to below the liquid surface of the water tank, so as to achieve the purpose of sucking the flying powder caused by vibration into the water tank through the exhaust fan, thereby achieving the purpose of avoiding deterioration of the working environment.
[0050] In the specification of the present utility model, a lot of specific details are described. However, it is understood that the embodiments of the present utility model can be practiced without these specific details. In some examples, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this specification.
[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.
Claims
1. A powder cleaning device for SLM process, characterized in that: include: A carrier plate (100) detachably connected to the base plate (600); as well as A recovery bin (200) is fixedly mounted on the frame (400), and the tops of the side walls on both sides of the recovery bin are provided with a first support surface (210), a second support surface (220) and a third support surface (230) that match the carrying plate (100); The second supporting surface (220) is arranged horizontally, the first supporting surface (210) and the third supporting surface (230) are symmetrically arranged at two ends of the second supporting surface (220), and the first supporting surface (210) and the third supporting surface (230) are both arranged obliquely.
2. The powder cleaning device for SLM process according to claim 1, characterized in that: Two carrying plates (100) are provided, and the two carrying plates (100) are respectively arranged at two ends of the base plate (600).
3. The powder cleaning device for SLM process according to claim 1, characterized in that: The second supporting surface (220) is located at a higher end of the first supporting surface (210) and the third supporting surface (230).
4. The powder cleaning device for SLM process according to any one of claims 1 to 3, characterized in that: A plurality of rolling elements (500) are arranged on the bearing plate (100) or the first supporting surface (210), the second supporting surface (220) and the third supporting surface (230).
5. The powder cleaning device for SLM process according to claim 4, characterized in that: The rolling element (500) is a bearing, and the bearing is rotatably connected to the bearing plate (100).
6. The powder cleaning device for SLM process according to claim 1, 2, 3 or 5, characterized in that: Limiting plates (410) matching with the ends of the carrying plate (100) are arranged on both sides of the recovery bin (200).
7. The powder cleaning device for SLM process according to claim 1, 2, 3 or 5, characterized in that: The bottom of the recovery bin (200) is funnel-shaped.
8. The powder cleaning device for SLM process according to claim 1, 2, 3 or 5, characterized in that: The inclination angle of the first supporting surface (210) and the second supporting surface (220) is α, wherein 30°≤α≤60°.
9. The powder cleaning device for SLM process according to claim 1, 2, 3 or 5, characterized in that: The carrying plate (100) is provided with a handle (110).