Metal 3D printing device powder return duct arrangement

Abstract

The utility model discloses a metal 3D printing equipment back powder pipeline device, include: frame, the top of frame is equipped with the limit slot, the inner wall sliding of limit slot is connected with the screen curtain, the one end of screen curtain is sleeved with the suction pipe, the utility model discloses a suction pipe is penetrated to the inside of frame, when needing to the powder in metal D printing equipment is recycled, through starting suction device makes the suction force of suction pipe inside, simultaneously starting displacement drive arrangement makes it drive displacement mechanism to drive suction pipe to carry out horizontal displacement on the top of frame, to this makes it while sucking can carry out automatic displacement and suck the powder that accumulates in printing equipment inside, and cooperate with adjusting screw rod, through the rotation adjusting screw rod can drive telescopic pipe spare telescopic downward to adjust and the distance of powder accumulation, make it cooperate with suction pipe can be more efficient to powder absorption, reduce artificial operation procedure and operation risk, improve back powder operation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of metal 3D printing equipment technology, and in particular to a powder return pipeline device for metal 3D printing equipment. Background Technology

[0002] Metal 3D printing equipment is a device that uses metal powder for 3D printing, also known as a metal 3D printer. Its working principle involves using a high-energy laser beam to melt the metal alloy powder on the two-dimensional cross-section of a sliced ​​3D model, printing the solid part layer by layer from bottom to top. During the process, after each layer of powder is sintered by the laser, a powder scraper is needed to collect the excess powder; after printing is complete, excess powder also needs to be collected.

[0003] An existing patent (publication number: CN210139059U) discloses a powder return pipe device for a metal 3D printing equipment, including a powder guide pipe, a connector, a fastening nut, a connecting screw, a limiting ring, and a plug. Both ends of the powder guide pipe are fixedly connected to the connector, and the end of the connector is integrally fixed with a plug. Two limiting rings are fixed on the outside of the connector. A connecting screw is sleeved on the outside of the connector between the limiting rings, and the outer wall of the connector is provided with external threads between the limiting rings. The fastening nut is engaged with the outer wall of the connector through the external threads.

[0004] Existing metal 3D printing equipment typically requires shutting down the machine, opening the door to remove the powder, and manually collecting residual powder from the front and rear pipes. This downtime significantly reduces production efficiency, and manual operation carries the risk of powder being inhaled by the operator, thus endangering their health. Utility Model Content

[0005] The purpose of this invention is to provide a powder return pipeline device for metal 3D printing equipment to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a metal 3D printing equipment powder return pipeline device, comprising: a frame;

[0007] The top of the frame has a limiting groove, and a baffle is slidably connected to the inner wall of the limiting groove. A suction tube is sleeved on one end of the baffle, and a telescopic pipe is inserted into the input end of the suction tube. A suction device is inserted into one end of the suction tube, and a collection box is connected to the output end of the suction device. A displacement driving device is provided on the outer surface of the frame, and a displacement mechanism is threadedly connected to the output end of the displacement driving device. The displacement mechanism is sleeved on the outer surface of the suction tube, and the inner wall of the displacement mechanism is threadedly connected.

[0008] Preferably, the suction tube includes a suction connector, one end of which is fixedly connected to the suction tube body, and one end of the suction connector is inserted into the top end of the telescopic tube.

[0009] Preferably, the telescopic fitting includes a telescopic tube, an outer expansion hopper is fixedly connected to the bottom of the telescopic tube, a connecting frame is fixedly connected to the outer surface of the telescopic fitting, and the adjusting screw extends to the inner wall of the connecting frame and is rotatably connected thereto.

[0010] Preferably, the suction device includes a suction fan, and a suction conduit is provided on the top of the suction fan, which is connected to the suction pipe body.

[0011] Preferably, the displacement driving device includes a displacement driving motor, the output end of which is fixedly connected to a threaded rod, and the displacement mechanism includes a displacement slider, one side of which is fixedly connected to a sleeve block.

[0012] Preferably, a limiting rod is fixedly connected to the inner wall of the frame, and the displacement slider passes through the limiting rod and is slidably connected to it.

[0013] Preferably, there are two curtains, which are symmetrically arranged inside the limiting groove.

[0014] Preferably, a support box is provided on the outer surface of the collection box, and the suction fan is located on top of the support box.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: By extending the suction tube into the interior of the frame, when it is necessary to recycle residual powder in the metal 3D printing equipment, the suction device is activated to generate suction force inside the suction tube. At the same time, the displacement drive device is activated to drive the displacement mechanism to move the suction tube laterally at the top of the frame. This allows it to automatically move and suck up the residual powder accumulated inside the printing equipment while suctioning. In addition, with the adjustment screw, rotating the adjustment screw can drive the telescopic tube to extend and retract downward to adjust the distance from the residual powder accumulation. This allows the suction tube to absorb residual powder more efficiently, reducing manual operation procedures and operational risks, and improving the efficiency of powder recycling. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a structural schematic diagram of the present invention from a second perspective;

[0019] Figure 3 This is a structural schematic diagram of the telescopic pipe fitting of this utility model;

[0020] Figure 4 This is a schematic diagram of the suction connector of this utility model;

[0021] Figure 5 This is a schematic diagram of the telescopic tube structure of this utility model;

[0022] Figure 6 This is a structural schematic diagram of the frame of this utility model.

[0023] As indicated by the labels in the diagram: 1. Frame; 2. Limiting groove; 3. Baffle curtain; 4. Suction pipe; 5. Telescopic pipe fitting; 6. Suction device; 7. Collection box; 8. Displacement drive device; 9. Displacement mechanism; 10. Adjusting screw; 401. Suction connector; 402. Suction pipe body; 501. Telescopic pipe; 502. Outer expansion bucket; 503. Connecting frame; 601. Suction fan; 602. Suction guide tube; 801. Displacement drive motor; 802. Threaded rod; 901. Displacement slider; 902. Sleeve block; 11. Limiting rod; 12. Support box. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model. The preferred embodiments of this utility model will now be described in more detail with reference to the accompanying drawings. Although the preferred embodiments of this utility model are shown in the drawings, it should be understood that this utility model can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make this utility model more thorough and complete, and to fully convey the scope of this utility model to those skilled in the art.

[0025] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular forms “a,” “the,” and “the” used in this invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0026] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0027] In the description of this utility model, it should be understood that the terms "thickness", "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] It should be understood that although the terms "first," "second," "third," etc., may be used to describe various components in this invention, this information should not be limited to these terms. These terms are only used to distinguish components of the same type from each other. For example, without departing from the scope of this invention, a first component may also be referred to as a second component, and similarly, a second component may also be referred to as a first component. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0030] The technical solutions of the embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0031] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a structural schematic diagram of the present invention from a second perspective; Figure 3 This is a structural schematic diagram of the telescopic pipe fitting of this utility model; Figure 4 This is a schematic diagram of the suction connector; Figure 5 This is a structural diagram of the telescopic tube; Figure 6 This is a structural schematic diagram of the frame of this utility model.

[0032] refer to Figures 1 to 6 A powder return pipeline device for a metal 3D printing equipment, comprising: a frame 1;

[0033] The top of the frame 1 has a limiting groove 2, and a curtain 3 is slidably connected to the inner wall of the limiting groove 2. A suction tube 4 is sleeved on one end of the curtain 3. A telescopic tube 5 is inserted into the input end of the suction tube 4. A suction device 6 is inserted into one end of the suction tube 4. A collection box 7 is connected to the output end of the suction device 6. A displacement driving device 8 is provided on the outer surface of the frame 1. A displacement mechanism 9 is threadedly connected to the output end of the displacement driving device 8. The displacement mechanism 9 is sleeved on the outer surface of the suction tube 4, and the inner wall of the displacement mechanism 9 is threadedly connected.

[0034] Specifically, the suction tube 4 includes a suction connector 401, one end of which is fixedly connected to the suction tube body 402, and the other end of the suction connector 401 is inserted into the top end of the telescopic tube 5.

[0035] Specifically, the telescopic fitting 5 includes a telescopic tube 501, an outer expansion hopper 502 is fixedly connected to the bottom of the telescopic tube 501, a connecting frame 503 is fixedly connected to the outer surface of the telescopic fitting 5, and the adjusting screw 10 extends to the inner wall of the connecting frame 503 and is rotatably connected to it.

[0036] Specifically, the suction device 6 includes a suction fan 601, and a suction conduit 602 is provided on the top of the suction fan 601. The suction conduit 602 is connected to the suction pipe body 402.

[0037] Specifically, the displacement driving device 8 includes a displacement driving motor 801, the output end of which is fixedly connected to a threaded rod 802, and the displacement mechanism 9 includes a displacement slider 901, one side of which is fixedly connected to a sleeve block 902.

[0038] Specifically, a limiting rod 11 is fixedly connected to the inner wall of the frame 1, and the displacement slider 901 passes through the limiting rod 11 and is slidably connected to it.

[0039] Specifically, there are two curtains 3, which are symmetrically arranged inside the limiting groove 2. The outer surface of the collection box 7 is provided with a support box 12, and the suction fan 601 is located on the top of the support box 12.

[0040] Example 1

[0041] In this embodiment, to address the problem of powder being inhaled by the operator during manual operation, the technical solution is as follows (refer to...). Figures 3 to 5 By activating the suction fan 601, a negative pressure is generated inside, which, in conjunction with the suction tube body 402, creates a suction force. This allows the telescopic tube 501 to efficiently suck up and recover residual powder when it approaches the area where residual powder accumulates inside the equipment. Simultaneously, the displacement drive motor 801 is activated, causing the threaded rod 802 to rotate. This drives the displacement slider 901 to move along the top of the frame 1, simultaneously moving the suction connector 401 on its inner wall. This movement pushes the baffle curtain 3 to slide against the inner wall of the limiting groove 2. This provides displacement driving force to the suction tube body 402 while the baffle curtain 3 seals the inner wall of the limiting groove 2, preventing residual powder from flowing into the limiting groove 2 and causing powder waste and contamination. Therefore, residual powder in the printing equipment can be recovered without manual operation.

[0042] It should be noted that the displacement slider 901 is symmetrical, with its sleeve block 902 located at its center. The suction connector 401 is sleeved on the inner wall of the sleeve block 902. The threaded rod 802 passes through one side of the displacement slider 901, and the limiting rod 11 passes through the other side to limit the movement path of the displacement slider 901. The threaded rod 802 can be rotated forward and backward so that the displacement slider 901 can make reciprocating motion.

[0043] Example 2

[0044] In this embodiment, in order to achieve sufficient and efficient absorption of residual powder in the equipment, the technical solution of this embodiment is as follows, for reference. Figures 4 to 5 When the telescopic tube 501 moves together with the suction connector 401, the adjusting screw 10 is rotated to extend it along the inner wall of the displacement slider 901 into the frame 1. At this time, while the telescopic tube 501 is performing lateral displacement to suck up residual powder, its connecting frame 503 is pushed to make the telescopic tube 501 gradually extend downward, so that the telescopic tube 501 extends downward to get closer to the position where residual powder is accumulated, and can fully suck up and recover the residual powder.

[0045] Based on the above embodiments, it can be concluded that by setting a suction connector 401 at the end of the suction pipe body 402, it can be inserted into the top of the telescopic pipe 5, thereby cooperating with the suction fan 601 to provide a return channel and suction driving force for residual powder recovery. It also makes the telescopic pipe 5 and the suction connector 401 easy to disassemble and clean. Under the cooperation of the displacement drive motor 801 and the threaded rod 802, the displacement slider 901 can be driven to move, so as to drive the suction connector 401 and the telescopic pipe 501 to move back and forth on the frame 1. With the setting of two baffles 3, they can automatically slide open or be pushed back according to the movement of the suction connector 401. This can achieve a good sealing effect on the inside of the limiting groove 2. By adjusting the screw 10 and the connecting frame 503, the telescopic pipe 501 can automatically extend downward to approach the position of residual powder accumulation, so as to fully suck and recover the residual powder inside the equipment, thereby achieving the effect of efficient powder cake recovery and reducing the risk of human operation.

[0046] The present invention has been described in detail above with reference to the accompanying drawings. In the above embodiments, the descriptions of each embodiment have different focuses; for parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments. Those skilled in the art should also understand that the actions and modules involved in the specification are not necessarily essential to the present invention. Furthermore, it is understood that the steps in the method of the present invention embodiments can be adjusted, combined, and deleted according to actual needs, and the structure in the device of the present invention embodiments can be combined, divided, and deleted according to actual needs.

[0047] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A powder return pipeline device for a metal 3D printing equipment, characterized in that, include: Rack (1); The top of the frame (1) has a limiting groove (2), and the inner wall of the limiting groove (2) is slidably connected to a curtain (3). One end of the curtain (3) is sleeved with a suction tube (4). The input end of the suction tube (4) is inserted with a telescopic tube (5). One end of the suction tube (4) is inserted with a suction device (6). The output end of the suction device (6) is connected to a collection box (7). The outer surface of the frame (1) is provided with a displacement driving device (8). The output end of the displacement driving device (8) is threadedly connected to a displacement mechanism (9). The displacement mechanism (9) is sleeved on the outer surface of the suction tube (4), and the inner wall of the displacement mechanism (9) is threadedly connected.

2. The powder return pipeline device for a metal 3D printing equipment according to claim 1, characterized in that: The suction tube (4) includes a suction connector (401), one end of which is fixedly connected to the suction tube body (402), and one end of the suction connector (401) is inserted into the top end of the telescopic tube (5).

3. The powder return pipeline device for a metal 3D printing equipment according to claim 1, characterized in that: The telescopic fitting (5) includes a telescopic tube (501), the bottom of which is fixedly connected to an outer expansion hopper (502), and the outer surface of the telescopic fitting (5) is fixedly connected to a connecting frame (503). The connecting frame (503) is internally threaded with an adjusting screw (10).

4. The powder return pipeline device for a metal 3D printing equipment according to claim 1, characterized in that: The suction device (6) includes a suction fan (601), and a suction conduit (602) is provided on the top of the suction fan (601). The suction conduit (602) is connected to the suction pipe body (402).

5. The powder return pipeline device for a metal 3D printing equipment according to claim 1, characterized in that: The displacement driving device (8) includes a displacement driving motor (801), and a threaded rod (802) is fixedly connected to the output end of the displacement driving motor (801). The displacement mechanism (9) includes a displacement slider (901), and a sleeve block (902) is fixedly connected to one side of the displacement slider (901).

6. The powder return pipeline device for a metal 3D printing equipment according to claim 5, characterized in that: The inner wall of the frame (1) is fixedly connected to a limiting rod (11), and the displacement slider (901) passes through the limiting rod (11) and is slidably connected to it.

7. The powder return pipeline device for a metal 3D printing equipment according to claim 1, characterized in that: The number of the curtains (3) is set to two, and the two curtains (3) are symmetrically arranged inside the limiting groove (2).

8. The powder return pipeline device for a metal 3D printing equipment according to claim 1, characterized in that: The outer surface of the collection box (7) is provided with a support box (12), and a suction fan (601) is fixedly provided at the upper end of the support box (12).

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