A powder spreading device for a metal powder 3D printer

Abstract

This utility model discloses a powder spreading device for a metal powder 3D printer, belonging to the field of 3D printing technology. It includes a bottom support frame with four upright plates fixedly connected to the top. Two fixing rods are fixedly connected between two upright plates, and material storage hoppers are slidably connected to the two fixing rods. A drive motor is fixedly connected to the top of the bottom support frame, and a first connecting rod is fixedly connected to the output end of the drive motor. This powder spreading device for a metal powder 3D printer, by incorporating a drive motor, a first connecting rod, a second connecting rod, a second gear, a powder spreading roller, and a rack, enables the powder spreading roller to rotate while simultaneously reciprocating, achieving multiple flattening of the powder, improving the density and uniformity of the powder layer, thereby enhancing the mechanical properties of the printed parts. Furthermore, by flattening the powder, it prevents localized areas of excessively thick or thin powder, improving processing accuracy.

Description

Technical Field

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

[0002] A metal powder 3D printer is a device that uses a high-energy beam to melt metal powder layer by layer to build three-dimensional metal parts. It belongs to additive manufacturing technology, and compared to traditional subtractive manufacturing (such as milling and turning), it can directly manufacture parts from digital models. 3D printing is a process of building objects layer by layer, and the thickness and uniformity of each powder layer directly affect printing accuracy. If the powder is not evenly spread, it may result in areas where the powder is too thick or too thin, affecting processing accuracy. Therefore, a powder spreading device for metal powder 3D printers is needed to solve these problems. Utility Model Content

[0003] To overcome the above-mentioned defects, this utility model provides a powder spreading device for a metal powder 3D printer, which solves the problem that 3D printing is a process of building objects layer by layer, and the thickness and uniformity of each layer of powder directly affect the printing accuracy. If the powder is not spread evenly, it may cause local powder to be too thick or too thin, affecting the processing accuracy.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a powder spreading device for a metal powder 3D printer, comprising a bottom support frame, four upright plates fixedly connected to the top of the bottom support frame, a fixing rod fixedly connected between two upright plates, two fixing rods, a material storage hopper slidably connected to the two fixing rods, a drive motor fixedly connected to the top of the bottom support frame, a first connecting rod fixedly connected to the output end of the drive motor, and a second connecting rod rotatably connected to one end of the first connecting rod; One end of the second connecting rod is rotatably connected to the material storage hopper. Four fixed plates are fixedly connected to the top of the bottom support frame. A rack is fixedly connected between two fixed plates. A second gear meshes with the bottom of the rack. A second rotating rod is fixedly connected to the second gear. There are two second rotating rods. A powder spreading roller is fixedly connected between the two second rotating rods.

[0005] As a further embodiment of this utility model: the second rotating rod passes through the material storage hopper, and the second rotating rod is rotatably connected to the material storage hopper through a bearing.

[0006] As a further embodiment of this utility model: a first gear is engaged at the top of the rack, and a first rotating rod is fixedly connected to the first gear.

[0007] As a further embodiment of this utility model: there are two first rotating rods, and a crushing roller is fixedly connected between the two first rotating rods.

[0008] As a further embodiment of this utility model: the first rotating rod passes through the material storage hopper, and the first rotating rod is rotatably connected to the material storage hopper through a bearing.

[0009] As a further embodiment of this utility model: both the powder spreading roller and the crushing roller are located inside the material storage hopper, and the crushing roller is located on top of the powder spreading roller.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This metal powder 3D printer powder spreading device, comprising a drive motor, a first connecting rod, a second connecting rod, a second gear, a powder spreading roller, and a rack, operates as follows: First, powder material is added to the material storage hopper. Then, the drive motor is activated, causing the first connecting rod to rotate. As the first connecting rod rotates 180 degrees, it pulls the material storage hopper along the second connecting rod. As the first connecting rod continues to rotate 180 degrees, it pushes the material storage hopper along the second connecting rod, thus achieving the reciprocating motion of the material storage hopper. During this motion... This will drive the first gear and the second gear to move. Since both the first gear and the second gear mesh with the rack, they will rotate during the movement. The first gear and the second gear will drive the crushing roller and the powder spreading roller to rotate respectively. The crushing roller crushes the powder during rotation, and the powder spreading roller spreads the powder while rotating. This device can realize the reciprocating motion of the powder spreading roller while it rotates, realizing multiple flattening of the powder, improving the compactness and density uniformity of the powder layer, thereby improving the mechanical properties of the printed parts. In addition, by spreading the powder evenly, it prevents the local powder from being too thick or too thin, thus improving the processing accuracy. 2. This metal powder 3D printer powder spreading device, consisting of a drive motor, a first connecting rod, a second connecting rod, a first gear, a crushing roller, and a rack, operates as follows: First, powder is added to the material storage hopper. Then, the drive motor is activated, rotating the first connecting rod. As the first connecting rod rotates 180 degrees, it pulls the material storage hopper via the second connecting rod. As the first connecting rod continues to rotate 180 degrees, it pushes the material storage hopper forward via the second connecting rod, thus achieving reciprocating motion. During this motion, the material storage hopper drives the first and second gears. Since both gears mesh with the rack, they rotate during this movement. The first and second gears then drive the crushing roller and the powder spreading roller to rotate. The crushing roller crushes the powder during rotation, while the powder spreading roller spreads the powder. This device uses the rotation of the crushing roller to crush the powder, preventing clumping and ensuring smooth material feeding. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This utility model Figure 1 Enlarged structural diagram at point A; Figure 3 This is a schematic diagram of the cross-section of the material storage hopper of this utility model; Figure 4 This is a three-dimensional structural diagram of the material storage hopper of this utility model; In the diagram: 1. Bottom support frame; 2. Vertical plate; 3. Fixing rod; 4. Material storage hopper; 5. Drive motor; 6. Fixing plate; 7. Rack; 8. First gear; 9. Second gear; 10. Powder spreading roller; 11. Crushing roller; 12. First rotating rod; 13. Second rotating rod; 14. First connecting rod; 15. Second connecting rod. Detailed Implementation

[0012] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0013] like Figure 1-4 As shown, this utility model provides a technical solution: a powder spreading device for a metal powder 3D printer, including a bottom support frame 1, four upright plates 2 fixedly connected to the top of the bottom support frame 1, and a fixing rod 3 fixedly connected between two upright plates 2. Because of the fixing rod 3, when the material storage hopper 4 moves, the material storage hopper 4 will slide on the fixing rod 3. The fixing rod 3 can play the role of limiting and guiding the material storage hopper 4, improving the stability and accuracy of the movement of the material storage hopper 4. There are two fixing rods 3, and the material storage hopper 4 is slidably connected to the two fixing rods 3. A first rotating rod 12 passes through the material storage hopper 4 and is rotatably connected to the material storage hopper 4 through a bearing.

[0014] A drive motor 5 is fixedly connected to the top of the bottom support frame 1. A first connecting rod 14 is fixedly connected to the output end of the drive motor 5. A second connecting rod 15 is rotatably connected to one end of the first connecting rod 14. One end of the second connecting rod 15 is rotatably connected to the material storage hopper 4. The powder spreading roller 10 and the crushing roller 11 are both located inside the material storage hopper 4. The crushing roller 11 is located on top of the powder spreading roller 10.

[0015] Four fixed plates 6 are fixedly connected to the top of the bottom support frame 1. A rack 7 is fixedly connected between two fixed plates 6. A second gear 9 is meshed at the bottom of the rack 7. Because of the second gear 9, when the second gear 9 moves, it will rotate during the movement because the second gear 9 meshes with the rack 7. The second gear 9 can drive the powder spreading roller 10 to rotate, so that the powder spreading roller 10 moves while rotating, which can facilitate the flattening of the powder. A second rotating rod 13 is fixedly connected to the second gear 9. The second rotating rod 13 passes through the material storage hopper 4 and is rotatably connected to the material storage hopper 4 through a bearing.

[0016] There are two second rotating rods 13, and a powder spreading roller 10 is fixedly connected between the two second rotating rods 13. A first gear 8 is meshed on the top of the rack 7. Because of the first gear 8, when the first gear 8 moves, it will rotate during the movement because the first gear 8 meshes with the rack 7. The first gear 8 facilitates the rotation of the crushing roller 11, ensuring the subsequent work. Two first rotating rods 12 are fixedly connected to the first gear 8, and a crushing roller 11 is fixedly connected between the two first rotating rods 12. Because of the crushing roller 11, the powder is crushed by the high-speed rotation of the crushing roller 11, preventing the powder from clumping and ensuring the smooth feeding.

[0017] The working principle of this utility model is as follows: In use, the powder material is first added into the material storage hopper 4. At this time, the drive motor 5 is started to drive the first connecting rod 14 to rotate. During the rotation of the first connecting rod 180 degrees, the first connecting rod 14 will pull the material storage hopper 4 to move through the second connecting rod 15. During the continued rotation of the first connecting rod 14 to 180 degrees, the first connecting rod 14 will push the material storage hopper 4 to move through the second connecting rod 15, thereby realizing the reciprocating motion of the material storage hopper 4. During the movement of the material storage hopper 4, the first gear 8 and the second gear 9 will move. Since the first gear 8 and the second gear 9 are both meshed with the rack 7, the first gear 8 and the second gear 9 will rotate during the movement. The first gear 8 and the second gear 9 will drive the crushing roller 11 and the powder spreading roller 10 to rotate respectively. The crushing roller 11 crushes the powder during the rotation, and the powder spreading roller 10 spreads the powder when it rotates.

[0018] 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] The preferred embodiments of this patent have been described in detail above. However, this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this patent.

Claims

1. A powder spreading device for a metal powder 3D printer, comprising a bottom support frame (1), characterized in that: The bottom support frame (1) is fixedly connected to four upright plates (2) at the top. A fixing rod (3) is fixedly connected between two upright plates (2). There are two fixing rods (3). A material storage hopper (4) is slidably connected to the two fixing rods (3). A drive motor (5) is fixedly connected to the top of the bottom support frame (1). A first connecting rod (14) is fixedly connected to the output end of the drive motor (5). A second connecting rod (15) is rotatably connected to one end of the first connecting rod (14). One end of the second connecting rod (15) is rotatably connected to the material storage hopper (4). The bottom support frame (1) is fixedly connected to four fixed plates (6). A rack (7) is fixedly connected between two fixed plates (6). A second gear (9) meshes with the bottom of the rack (7). A second rotating rod (13) is fixedly connected to the second gear (9). There are two second rotating rods (13). A powder spreading roller (10) is fixedly connected between the two second rotating rods (13).

2. The powder spreading device for a metal powder 3D printer according to claim 1, characterized in that: The second rotating rod (13) passes through the material storage hopper (4), and the second rotating rod (13) is rotatably connected to the material storage hopper (4) through a bearing.

3. The powder spreading device for a metal powder 3D printer according to claim 1, characterized in that: The rack (7) is engaged with a first gear (8) at its top, and a first rotating rod (12) is fixedly connected to the first gear (8).

4. The powder spreading device for a metal powder 3D printer according to claim 3, characterized in that: There are two first rotating rods (12), and a crushing roller (11) is fixedly connected between the two first rotating rods (12).

5. The powder spreading device for a metal powder 3D printer according to claim 3, characterized in that: The first rotating rod (12) passes through the material storage hopper (4), and the first rotating rod (12) is rotatably connected to the material storage hopper (4) through a bearing.

6. The powder spreading device for a metal powder 3D printer according to claim 4, characterized in that: The powder spreading roller (10) and the crushing roller (11) are both located inside the material storage hopper (4), and the crushing roller (11) is located on top of the powder spreading roller (10).

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