Powder recovery device for 3D additive printing

Abstract

The utility model belongs to the technical field of additive manufacturing, and discloses a powder recovery device for 3D additive printing, which comprises a box body, the rear side of the box body is fixedly arranged, the outer side of the box body is provided with a swing assembly, the swing assembly comprises a motor fixedly arranged on the top surface, the tail end of a main shaft of the motor is fixedly provided with a rotating shaft, and the rotating shaft is fixedly connected with the box body. And a connecting shaft is rotationally arranged on the outer side of the rotating shaft, the other end of the connecting shaft is rotationally connected with a fixing seat, a fixing frame is fixedly arranged on the outer side of the fixing seat, and a first filter screen is fixedly arranged in the fixing frame. Caked impurities in the powder are removed in a filtering mode, so that subsequent recycling is facilitated, waste of the powder is reduced, and meanwhile economic expenditure is indirectly reduced.

Description

Technical Field

[0001] This utility model belongs to the field of additive manufacturing technology, specifically a powder recycling device for 3D additive printing. Background Technology

[0002] Additive manufacturing is a technology that uses the method of gradually adding materials to manufacture solid parts. Compared with the traditional material removal-cutting technology, it is a "bottom-up" manufacturing method. It is also known by various names such as rapid prototyping, 3D printing, and solid free manufacturing, which also express the characteristics of this technology from different perspectives.

[0003] Meanwhile, in 3D additive printing, especially metal or plastic powder bed melting technology such as SLS, SLM, and EBM, the powder recovery device recovers the unmelted residual powder. Since these powders were not completely sintered or melted by the laser or electron beam during the printing process, they can still be reused. If they are discarded directly, it will cause a lot of waste and economic expenditure. Utility Model Content

[0004] To address the problems mentioned in the background section, this invention provides a powder recycling device for 3D additive printing, which has the advantage of filtering powder. This invention solves the problem of recycling used powder from additive printing by removing clumps of impurities from the powder through filtration, thus facilitating subsequent recycling, reducing powder waste, and indirectly lowering economic costs.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a powder recycling device for 3D additive printing, comprising a housing, with a fixed rear side and a swing assembly on the outer side, the swing assembly including a motor fixedly mounted on the top surface.

[0006] A rotating shaft is fixedly installed at the end of the motor's main shaft. A connecting shaft is rotatably installed on the outside of the rotating shaft. A fixed seat is rotatably connected to the other end of the connecting shaft. A fixed frame is fixedly installed on the outside of the fixed seat. A first filter screen is fixedly installed inside the fixed frame.

[0007] Preferably, the outer side of the fixed frame is rotatably connected to multiple connectors, and the connectors are rotatably connected to the box body.

[0008] Preferably, a second filter screen is snapped onto the bottom inner side of the fixed frame, and multiple slots are provided on the outer side of the second filter screen. A card block is snapped onto the inside of the slot, and a card piece is fixedly provided on the outside of the card block.

[0009] Preferably, limit blocks are fixedly provided at both ends of the inner side of the card, and the limit blocks slide inside the fixed frame. A spring is fixedly provided on the outer side of the limit block, and the spring is fixedly connected to the limit block.

[0010] Preferably, the limiting block has a reinforcing shaft slidably connected inside, and the reinforcing shaft is fixedly connected to the fixed frame, with the reinforcing shaft located inside the spring.

[0011] Preferably, a base is fixedly provided on the bottom surface of the box, a baffle is fixedly provided on the top surface of the base, and a second rotating door is rotatably provided on the outer side of the bottom of the base.

[0012] Preferably, a feed inlet is fixedly provided on the top surface of the box, and a first rotating door is rotatably provided on the side of the box.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model uses a motor to drive a rotating shaft, which in turn drives a connecting shaft. The connecting shaft, through a fixed base, causes a fixed frame to swing. As the fixed frame swings, it filters the powder through a first filter screen, solving many problems related to powder recycling. By filtering, clumps of impurities in the powder are removed, facilitating subsequent recycling and reducing powder waste, while also indirectly lowering economic expenditures.

[0015] 2. This utility model allows the locking pieces on both sides to be pulled outwards, causing the locking blocks on the inner side of the locking pieces to leave the inside of the locking slots. At this time, the second filter screen will detach from the inside of the fixed frame and can then be taken out to clean away the clumps stuck inside the filter holes, thereby accelerating the filtration efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of the box body of this utility model;

[0018] Figure 3 This is a schematic diagram of the cross-sectional structure of the fixed frame of this utility model;

[0019] Figure 4 This is a schematic diagram of the swing component structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the spring mounting structure of this utility model.

[0021] In the diagram: 1. Box body; 2. Mounting base;

[0022] 3. Swing assembly; 301. Motor; 302. Rotating shaft; 303. Connecting shaft; 304. Fixing base; 305. Fixing frame; 306. First filter screen;

[0023] 4. Connector; 5. Feed inlet; 6. First rotating door; 7. Clamping device; 701. Clamping block; 702. Limiting block; 8. Second filter screen; 801. Slot; 9. Reinforcing shaft; 10. Spring; 11. Base; 12. Second rotating door; 13. Baffle. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] like Figures 1 to 5 As shown, this utility model provides a powder recycling device for 3D additive printing, including a housing 1, a 2 fixedly mounted on the rear side of the housing 1, and a swing assembly 3 mounted on the outer side of the 2. The swing assembly 3 includes a motor 301 fixedly mounted on the top surface of the 2.

[0026] A rotating shaft 302 is fixedly installed at the end of the main shaft of the motor 301. A connecting shaft 303 is rotatably installed on the outside of the rotating shaft 302. A fixed seat 304 is rotatably connected to the other end of the connecting shaft 303. A fixed frame 305 is fixedly installed on the outside of the fixed seat 304. A first filter screen 306 is fixedly installed inside the fixed frame 305. The motor 301 drives the rotating shaft 302, which drives the connecting shaft 303. The connecting shaft 303 drives the fixed frame 305 to swing through the fixed seat 304. While swinging, the fixed frame 305 filters the powder through the first filter screen 306, which solves many problems in powder recycling. By filtering, the clumps of impurities in the powder are removed, which facilitates subsequent recycling and reduces powder waste and indirectly reduces economic expenditure.

[0027] Specifically, multiple connectors 4 are rotatably connected to the outer side of the fixed frame 305, and the connectors 4 are rotatably connected to the housing 1. The connectors 4 are used to suspend and support the first filter screen 306.

[0028] Furthermore, a second filter screen 8 is snapped onto the bottom inner side of the fixed frame 305. Multiple slots 801 are provided on the outer side of the second filter screen 8. A locking block 701 is snapped onto the inside of the slot 801. A locking piece 7 is fixedly provided on the outer side of the locking block 701. By pulling the locking pieces 7 on both sides outward, the locking block 701 on the inner side of the locking piece 7 is disengaged from the inside of the slot 801. At this time, the second filter screen 8 will detach from the inside of the fixed frame 305 and can then be taken out to clean the clumps stuck inside the filter holes, thereby accelerating the filtration efficiency.

[0029] Furthermore, limit blocks 702 are fixedly provided at both ends of the inner side of the clip 7, and the limit blocks 702 slide inside the fixed frame 305. A spring 10 is fixedly provided on the outer side of the limit block 702, and the spring 10 is fixedly connected to the limit block 702. The spring 10 is used to pull the clip 7, thereby ensuring the stability of the connection between the second filter screen 8 and the fixed frame 305.

[0030] It is worth noting that the limiting block 702 has an internal sliding connection of a reinforcing shaft 9, and the reinforcing shaft 9 is fixedly connected to the fixing frame 305. The reinforcing shaft 9 is located inside the spring 10 and is used to increase the strength of the spring 10.

[0031] It is worth noting that a base 11 is fixedly installed on the bottom surface of the box 1, a baffle 13 is fixedly installed on the top surface of the base 11, and a second rotating door 12 is rotatably installed on the outer side of the bottom of the base 11. The filtered powder can be taken out by opening the second rotating door 12, and the baffle 13 is used to intercept the powder.

[0032] It is worth mentioning that the top surface of the box 1 is fixedly provided with a feed inlet 5, and the side of the box 1 is rotatably provided with a first rotating door 6. The feed inlet 5 is used for feeding materials, and the first rotating door 6 facilitates the removal of the internal filter screen.

[0033] Among them, motor 301 is prior art and will not be described in detail; at the same time, this utility model also includes a power supply, controller and switch, etc., which are not the main technical points of this patent and will not be described in detail; the "front, back, left and right" perspectives of this device are as follows: Figure 1 The direction shown in the diagram is the reference.

[0034] Working principle:

[0035] When using the powder recycling device for 3D additive printing, firstly, pour the used powder into the housing 1 through the feed inlet 5. Then, turn on the switch of the motor 301 in the swing assembly 3. The motor 301 is installed on the outside of the housing 1 via 2. The motor 301 drives the rotating shaft 302, which in turn drives the connecting shaft 303. The connecting shaft 303 drives the fixed frame 305 to swing through the fixed base 304. The fixed frame 305 is installed inside the housing 1 through the connector 4. While swinging, the fixed frame 305 filters the powder through the first filter screen 306. After being filtered by the first filter screen 306, the powder returns to the inside of the second filter screen 8 for another filtration. Finally, the filtered powder enters the inside of the base 11. Then, open the second rotating door 12 to remove the filtered powder to complete the recycling process. The baffle 13 prevents powder from flowing to other places during filtration. After a period of use, the filter screen may become clogged, requiring cleaning. Open the first rotating door 6 and pull the locking piece 7 to both sides. When the locking block 701 disengages from the locking slot 801, the second filter screen 8 can be removed, thus cleaning the debris stuck in its filter screen holes. The spring 10 on the outside of the reinforcing shaft 9 is used to hold the locking piece 7, thereby maintaining the stability of the second filter screen 8 when connected to the fixed frame 305. The interaction between the limiting block 702 and the reinforcing shaft 9 prevents the locking piece 7 from being pulled out of the fixed frame 305. This utility model solves the problem of recycling powder after use in additive printing. By filtering, the clumps of impurities in the powder are removed, facilitating subsequent recycling and reducing powder waste, while also indirectly reducing economic expenditure.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A powder recycling device for 3D additive printing, comprising a box (1), characterized in that: The rear side of the housing (1) is fixedly provided with (2), and the outside of the (2) is provided with a swing assembly (3). The swing assembly (3) includes a motor (301) fixedly provided on the top surface of the (2). A rotating shaft (302) is fixedly installed at the end of the main shaft of the motor (301). A connecting shaft (303) is rotatably installed on the outside of the rotating shaft (302). A fixed seat (304) is rotatably connected to the other end of the connecting shaft (303). A fixed frame (305) is fixedly installed on the outside of the fixed seat (304). A first filter screen (306) is fixedly installed inside the fixed frame (305).

2. A powder recycling device for 3D additive printing according to claim 1, characterized in that: The outer side of the fixed frame (305) is rotatably connected to multiple connectors (4), and the connectors (4) are rotatably connected to the box body (1).

3. A powder recycling device for 3D additive printing according to claim 1, characterized in that: The bottom inner side of the fixed frame (305) is fitted with a second filter screen (8), and the outer side of the second filter screen (8) is provided with multiple slots (801). The slots (801) are fitted with a block (701), and the outer side of the block (701) is fixed with a clip (7).

4. A powder recycling device for 3D additive printing according to claim 3, characterized in that: The card (7) has a limit block (702) fixedly installed at both ends of its inner side, and the limit block (702) slides inside the fixed frame (305). A spring (10) is fixedly installed on the outer side of the limit block (702), and the spring (10) is fixedly connected to the limit block (702).

5. A powder recycling device for 3D additive printing according to claim 4, characterized in that: The limiting block (702) has an internal sliding connection of a reinforcing shaft (9), and the reinforcing shaft (9) is fixedly connected to the fixed frame (305). The reinforcing shaft (9) is located inside the spring (10).

6. A powder recycling device for 3D additive printing according to claim 1, characterized in that: The bottom surface of the box (1) is fixedly provided with a base (11), the top surface of the base (11) is fixedly provided with a baffle (13), and the bottom outer side of the base (11) is rotatably provided with a second rotating door (12).

7. A powder recycling device for 3D additive printing according to claim 1, characterized in that: The top surface of the box (1) is fixedly provided with a feed inlet (5), and the side surface of the box (1) is rotatably provided with a first rotating door (6).

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