Additive manufacturing powder spreading device

Abstract

The invention belongs to the technical field of powder spreading devices, and particularly discloses an additive manufacturing powder spreading device which comprises a base, an operation table arranged at the upper end of the base, a mounting plate arranged at the rear end of the upper surface of the operation table, a fixing plate arranged at the front end of the upper surface of the operation table, an observation window arranged at the upper end of the fixing plate and a top plate arranged at the upper end of the observation window. A lifting plate mechanism is arranged in the storage groove; limiting mechanisms are arranged on the surfaces of the two sides of the storage groove; a powder feeding mechanism is arranged between the mounting plate and the fixing plate; a laying rail is arranged on the upper surface of the base table, and a powder shoveling mechanism is arranged at the upper end of the laying rail. In the powder shoveling mechanism, pressing plates are rapidly disassembled and assembled through locking nuts, an X-shaped scraper is clamped and fixed between the two pressing plates, and the X-shaped scraper is provided with a plurality of different faces, so that the optimal powder scraping effect and the stable and reliable machining process can be ensured; guide wheels are arranged at the four corners of the bottom of a bearing plate in the lifting plate mechanism, and the bearing plate is more stably lifted in the lifting bin through the guide wheels.

Description

Technical Field

[0001] The present invention belongs to the technical field of powder spreading devices, and in particular relates to a powder spreading device for additive manufacturing. Background Art

[0002] Additive manufacturing technology, also known as 3D printing technology, is based on the principle of manufacturing objects by adding materials layer by layer. Unlike traditional subtractive manufacturing methods, additive manufacturing technology does not require removing excess parts from a piece of raw material. Instead, it piles up the material layer by layer according to the three-dimensional data of the object to eventually form a complete object. Additive manufacturing powder laying is an important part of additive manufacturing technology. Its main function is to spread the powder evenly on the workbench, providing a foundation for subsequent manufacturing processes. The powder laying device can accurately control the thickness of each layer of powder, thereby ensuring that the manufactured parts are of high precision and high quality. The powder laying device can evenly distribute the powder on the workbench to avoid powder or gaps, thereby ensuring the strength and stability of the parts.

[0003] In the prior art, the powder spreading effect is mostly achieved by a single-sided powder spreading method, which results in a poor powder spreading effect. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose an additive manufacturing powder spreading device.

[0005] To achieve the above objectives, the present invention provides an additive manufacturing powder laying device, comprising a base, an operating table is provided at the upper end of the base, a mounting plate is provided at the rear end of the upper surface of the operating table, a fixed plate is provided at the front end of the upper surface of the operating table, an observation window is provided at the upper end of the fixed plate, a top plate is provided at the upper end of the observation window, movable doors are rotatably installed on both side surfaces of the top plate, a storage slot is provided on the left side of the base, a lifting plate mechanism is provided inside the storage slot, limiting mechanisms are provided on both side surfaces of the storage slot, a powder feeding mechanism is provided between the mounting plate and the fixed plate, a laying rail is provided on the upper surface of the base, and a powder shoveling mechanism is provided at the upper end of the laying rail.

[0006] In the above technical solution, further, a closed door is rotatably installed on the left surface of the base, a locking bolt is provided on the right side of the closed door, and a slide is provided at the lower end of the storage groove.

[0007] In the above technical solution, further, the lifting plate mechanism includes a trolley slidably installed inside the storage groove, the upper end of the trolley is provided with a lifting warehouse, and the front end of the lifting warehouse is provided with a discharge chute.

[0008] In the above technical solution, further, a supporting plate is slidably installed inside the lifting warehouse, a hydraulic rod is fixedly installed at the lower end of the lifting warehouse, the telescopic end of the hydraulic rod is fixedly installed on the lower surface of the supporting plate, and guide wheels are fixedly installed at the four corners of the lower end of the supporting plate.

[0009] In the above technical solution, further, the powder feeding mechanism includes a vertical track fixedly installed on the inner surface of the mounting plate, the fixed plate is provided with a corresponding vertical track relative to the inner surface, a powder spreading vehicle is slidably installed between the two vertical tracks, and a powder feeding rack is provided at the upper end of the powder spreading vehicle.

[0010] In the above technical solution, further, the powder shoveling mechanism includes a mobile frame slidably installed on the upper end of the track laying, a fixed clamping plate is installed on one side of the mobile frame, two pressure plates are provided inside the mobile frame, an X-shaped scraper is provided between the two pressure plates, and locking screws are installed through both ends of the rear surface of the fixed clamping plate, and the locking screws are rotatably installed on one side of the mobile frame.

[0011] In the above technical solution, further, the limiting mechanism includes a slider slidably mounted on the surface of the storage slot, a baffle is rotatably mounted on the upper surface of the slider, and a locking rod is provided on one side of the baffle of the slider.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. The powder scraping mechanism uses a locking nut to quickly disassemble and assemble the pressure plate. An X-shaped scraper is clamped and fixed between the two pressure plates. The X-shaped scraper has multiple different surfaces to ensure the best powder scraping effect and a stable and reliable processing process;

[0014] 2. The storage slot inside the base is equipped with a lifting plate mechanism, which can be quickly maintained and repaired by a cart. Guide wheels are provided at the four corners of the bottom of the load-bearing plate in the lifting plate mechanism, which make the load-bearing plate rise and fall more stably inside the lifting bin. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The present invention provides a schematic structural diagram of a powder laying device for additive manufacturing;

[0016] Figure 2 A schematic diagram of the base structure of an additive manufacturing powder laying device proposed in the present invention;

[0017] Figure 3 A cross-sectional view of a powder spreading device for additive manufacturing proposed by the present invention;

[0018] Figure 4 This is a schematic structural diagram of another perspective of an additive manufacturing powder laying device proposed by the present invention;

[0019] Figure 5This is a schematic diagram of the structure of a lifting plate mechanism of an additive manufacturing powder spreading device proposed by the present invention;

[0020] Figure 6 A cross-sectional view of a lifting plate mechanism of an additive manufacturing powder spreading device proposed by the present invention;

[0021] Figure 7 The present invention provides a schematic diagram of the powder shoveling mechanism structure of an additive manufacturing powder spreading device;

[0022] Figure 8 A cross-sectional view of a powder shoveling mechanism of a powder spreading device for additive manufacturing proposed by the present invention;

[0023] Figure 9 The present invention proposes an additive manufacturing powder laying device Figure 4 Enlarged view of point A in the middle.

[0024] In the figure: 1. Base; 2. Operating table; 3. Mounting plate; 4. Top plate; 5. Observation window; 6. Movable door; 7. Closed door; 8. Vertical track; 9. Loading plate; 10. Guide wheel; 11. Hydraulic rod; 12. Lifting bin; 13. Discharge chute; 14. Trolley; 15. Track laying; 16. Mobile frame; 17. Fixed clamping plate; 18. Locking screw; 19. Pressing plate; 20. X-shaped scraper; 21. Locking nut; 22. Powder feeding frame; 23. Powder laying trolley; 24. Through groove; 25. Locking bolt; 26. Fixed plate; 27. Slope; 28. Storage trough; 29. ​​Slider; 30. Baffle; 31. Locking rod. DETAILED DESCRIPTION

[0025] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] like Figures 1-9 The additive manufacturing powder laying device shown includes a base 1, an operating table 2 is provided at the upper end of the base 1, a mounting plate 3 is provided at the rear end of the upper surface of the operating table 2, a fixed plate 26 is provided at the front end of the upper surface of the operating table 2, an observation window 5 is provided at the upper end of the fixed plate 26, a top plate 4 is provided at the upper end of the observation window 5, movable doors 6 are rotatably installed on both sides of the top plate 4, a storage groove 28 is provided on the left side of the base 1, a lifting plate mechanism is provided inside the storage groove 28, and limiting mechanisms are provided on both sides of the storage groove 28, a powder feeding mechanism is provided between the mounting plate 3 and the fixed plate 26, a laying track 15 is provided on the upper surface of the base 1, and a powder shoveling mechanism is provided on the upper end of the laying track 15.

[0027] like Figure 1As shown, a closed door 7 is rotatably installed on the left surface of the base 1, and a locking bolt 25 is provided on the right side of the closed door 7 on the base 1. A slide 27 is provided at the lower end of the storage groove 28. The slide 27 facilitates the operator to send the lifting mechanism to the inside of the base 1. The closed door 7 forms a seal inside the space to prevent external air flow from causing powder to fly.

[0028] like Figure 3 , Figure 4 As shown, the powder feeding mechanism includes a vertical track 8 fixedly mounted on the inner surface of the mounting plate 3, a corresponding vertical track 8 is provided on the inner surface of the fixed plate 26, a powder spreading vehicle 23 is slidably mounted between the two vertical tracks 8, a powder feeding rack 22 is provided on the upper end of the powder spreading vehicle 23, and a through groove 24 corresponding to the powder shoveling mechanism is provided on the inner surface of the mounting plate 3. The operator places the powder required for additive manufacturing in advance inside the powder feeding rack 22, and performs the powder feeding operation through the powder spreading vehicle 23.

[0029] like Figure 5 , Figure 6 As shown, the lifting plate mechanism includes a trolley 14 slidably mounted inside the storage slot 28, a lifting bin 12 is provided at the upper end of the trolley 14, and a discharge trough 13 is provided at the front end of the lifting bin 12. The discharge trough 13 is used to collect excess powder, so that the powder surface on the surface of the supporting plate 9 is smooth to enhance the effect of additive manufacturing.

[0030] A carrying plate 9 is slidably installed inside the lifting bin 12, and a hydraulic rod 11 is fixedly installed at the lower end of the lifting bin 12. The telescopic end of the hydraulic rod 11 is fixedly installed on the lower surface of the carrying plate 9, and guide wheels 10 are fixedly installed at the four corners of the lower end of the carrying plate 9. The guide wheels 10 prevent the carrying plate 9 from shaking during the rising and falling process, which causes the powder on the surface of the carrying plate 9 to be uneven and affects the additive manufacturing effect.

[0031] like Figure 7 , Figure 8 As shown, the powder shoveling mechanism includes a mobile frame 16 slidably mounted on the upper end of the track 15, a fixed card plate 17 is installed on one side of the mobile frame 16, two pressure plates 19 are provided inside the mobile frame 16, an X-shaped scraper 20 is provided between the two pressure plates 19, and locking screws 18 are installed through both ends of the rear surface of the fixed card plate 17. The locking screw 18 is located on one side of the mobile frame 16 and is rotatably installed with a locking nut 21. The locking nut 21 facilitates the insertion and installation of the fixed card plate 17, and facilitates the operator to inspect and replace the pressure plate 19.

[0032] like Figure 9 As shown, the limiting mechanism includes a slider 29 slidably mounted on the surface of the storage slot 28, a baffle 30 is rotatably mounted on the upper surface of the slider 29, and a locking rod 31 is provided on one side of the baffle 30 of the slider 29 to fix the position of the cart 14 through the locking rod 31.

[0033] Working principle: The staff moves the cart 14 along the slope 27 to the inside of the storage groove 28, and fixes the position of the cart through the limit mechanisms on both sides of the storage groove 28. When moving to the outside of the cart 14, the baffle 30 is rotated. At this time, the operator rotates the locking rod 31 to fix the slider 29 on the surface on both sides of the storage groove 28. After installation, the closing door 7 is rotated to control the locking bolt 25 to fix the position, so that the inside of the base 1 is sealed.

[0034] A lifting plate mechanism for additive manufacturing is provided at the upper end of the trolley 14. The position of the carrier plate 9 inside the lifting bin 12 is controlled by a hydraulic rod 11. Guide wheels 10 are provided at the four corners of the lower surface of the carrier plate 9 and are in contact with the inner surface of the lifting bin 12. The guide wheels 10 make the rise and fall of the carrier plate 9 more stable, avoiding shaking during the movement process and causing uneven powder surface, which affects the effect of additive manufacturing. When additive manufacturing is required, the hydraulic rod 11 lifts the carrier plate 9 to a height flush with the operating table 2.

[0035] The operator controls the powder feeding mechanism to feed powder to the surface of the carrier plate 9, places the powder for additive manufacturing inside the powder feeding rack 22 in advance, controls the powder spreading vehicle 23 to move along the vertical track 8 to feed powder to the surface of the carrier plate 9, and uses the powder shoveling mechanism to perform the powder spreading operation after the powder is fed. A mobile frame 16 is slidably installed on the upper end of the laying track 15, and a fixed card plate 17 is provided at the rear end of the mobile frame 16. Two pressure plates 19 are provided between the mobile frame 16 and the fixed card plate 17. An X-shaped scraper 20 is clamped between the two pressure plates 19. The X-shaped scraper 20 has multiple contact surfaces, which can provide a better scraping effect and a stable and reliable processing process. The fixed card plate 17 and the mobile frame 16 are fixed in position by two locking screws 18, and the fixed card plate 17 is fixed in position by the locking nut 21 on the other side. The two pressure plates 19 are provided with a slot corresponding to the X-shaped scraper 20. The mobile frame 16 moves along the laying track 15 to shovel the excess powder on the upper end of the carrier plate 9 to the discharge trough 13, and then repeats the powder feeding operation and the powder spreading operation.

[0036] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. Various changes and improvements are possible without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the invention as claimed.

Claims

1. An additive manufacturing powder spreading device, comprising a base (1), characterized in that: An operating table (2) is provided at the upper end of the base (1), a mounting plate (3) is provided at the rear end of the upper surface of the operating table (2), a fixed plate (26) is provided at the front end of the upper surface of the operating table (2), an observation window (5) is provided at the upper end of the fixed plate (26), a top plate (4) is provided at the upper end of the observation window (5), movable doors (6) are rotatably installed on both sides of the top plate (4), a storage groove (28) is provided on the left side of the base (1), a lifting plate mechanism is provided inside the storage groove (28), and limiting mechanisms are provided on both sides of the storage groove (28), a powder feeding mechanism is provided between the mounting plate (3) and the fixed plate (26), a laying track (15) is provided on the upper surface of the base (1), and a powder shoveling mechanism is provided at the upper end of the laying track (15).

2. The additive manufacturing powder spreading device according to claim 1, characterized in that: A closed door (7) is rotatably mounted on the left surface of the base (1), a locking bolt (25) is provided on the right side of the closed door (7) on the base (1), and a slide (27) is provided at the lower end of the storage groove (28).

3. The additive manufacturing powder spreading device according to claim 1, characterized in that: The lifting plate mechanism comprises a trolley (14) slidably mounted inside a storage slot (28), a lifting bin (12) being provided at the upper end of the trolley (14), and a discharge chute (13) being provided at the front end of the lifting bin (12).

4. The additive manufacturing powder spreading device according to claim 3, characterized in that: A bearing plate (9) is slidably mounted inside the lifting bin (12), a hydraulic rod (11) is fixedly mounted at the lower end of the lifting bin (12), a telescopic end of the hydraulic rod (11) is fixedly mounted on the lower surface of the bearing plate (9), and guide wheels (10) are fixedly mounted at all four corners of the lower end of the bearing plate (9).

5. The additive manufacturing powder spreading device according to claim 1, characterized in that: The powder feeding mechanism includes a vertical track (8) fixedly mounted on the inner surface of the mounting plate (3); a corresponding vertical track (8) is provided on the inner surface of the fixed plate (26); a powder spreading vehicle (23) is slidably mounted between the two vertical tracks (8); and a powder feeding frame (22) is provided on the upper end of the powder spreading vehicle (23).

6. The additive manufacturing powder spreading device according to claim 1, characterized in that: The powder shoveling mechanism comprises a mobile frame (16) slidably mounted on the upper end of the laying track (15); a fixed card plate (17) is mounted on one side of the mobile frame (16); two pressing plates (19) are arranged inside the mobile frame (16); an X-shaped scraper (20) is arranged between the two pressing plates (19); locking screws (18) are installed through both ends of the rear surface of the fixed card plate (17); and the locking screws (18) are rotatably mounted on one side of the mobile frame (16) and a locking nut (21) is mounted on the locking screws (18).

7. The additive manufacturing powder spreading device according to claim 1, characterized in that: The limiting mechanism comprises a slider (29) slidably mounted on the surface of the storage slot (28); a baffle (30) is rotatably mounted on the upper surface of the slider (29); and a locking rod (31) is provided on one side of the baffle (30) of the slider (29).

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