3D laser forming metal powder spreading device

Abstract

The application relates to a 3D laser forming metal powder spreading device, and relates to the technical field of 3D laser forming, which comprises a workbench, the inside of the workbench is provided with a moving mechanism, the upper surface of the workbench is provided with a movable plate, the upper surface of the movable plate is fixedly connected with a fixed plate and an electric push rod, the electric push rod is arranged on the side surface of the fixed plate, the upper surface of the movable plate is provided with a supporting plate, and the surface of the supporting plate is fixedly connected with a connecting block. The moving mechanism can drive the movable plate and the upper powder spreading assembly to move integrally, powder spreading on different areas of the surface of the workbench is realized, the powder spreading range is expanded, and the flexibility and the covering area of the powder spreading operation are improved. The electric push rod is arranged, the height of the supporting plate, the storage bin and the conveying bin can be adjusted through the extension and retraction of the electric push rod, the powder falling height can be adjusted according to the powder spreading requirement, the powder thickness can be controlled, and the layer thickness requirement of different 3D laser forming can be met.

Description

Technical Field

[0001] This application relates to the field of 3D laser forming technology, and in particular to a 3D laser forming metal powder spreading device. Background Technology

[0002] 3D laser forming is one of the core branches of additive manufacturing. It is a technology that uses digital model files as a basis and employs powdered metal or plastic and other bondable materials to construct objects by printing layer by layer. It is commonly known as 3D printing. The working principle of a 3D printer is basically the same as that of an ordinary printer, except that the printing materials are different. Ordinary printers use ink and paper as printing materials, while 3D printers contain different printing materials such as metal, ceramics, plastics, and sand, which are real raw materials. After the printer is connected to a computer, the printing materials can be stacked layer by layer under computer control, and finally the blueprint on the computer is turned into a physical object. Currently, in the process of 3D laser forming, a layer of powder needs to be laid on the surface of the printing table.

[0003] However, existing devices are not convenient for adjusting the range and thickness of powder during the powder spreading process, and cannot spread the powder continuously and uniformly. In order to solve the above problems, a 3D laser forming metal powder spreading device is proposed. Utility Model Content

[0004] The purpose of this application is to provide a 3D laser forming metal powder spreading device, which has the advantages of easy adjustment of the spreading range and thickness, and the ability to continuously and uniformly spread the powder.

[0005] This application provides a 3D laser forming metal powder spreading device with the following technical solution: A 3D laser forming metal powder spreading device includes a worktable, a moving mechanism is provided inside the worktable, a movable plate is provided on the upper surface of the worktable, a fixed plate and an electric push rod are fixedly connected to the upper surface of the movable plate, the electric push rod is provided on the side of the fixed plate, a support plate is provided on the upper surface of the movable plate, a connecting block is fixedly connected to the surface of the support plate, the top end of the electric push rod is fixedly connected to the lower surface of the connecting block, a storage bin is fixedly connected to one end of the support plate, a conveying bin is fixedly connected to the lower surface of the storage bin, a servo motor is fixedly connected to the surface of the conveying bin, a bearing is fixedly connected inside the conveying bin so that a conveying roller passes through it, the output shaft of the servo motor is fixedly connected to the conveying roller, a groove is formed on the surface of the conveying roller, and a vibrator is fixedly connected to the surface of the storage bin.

[0006] By adopting the above technical solution, the moving mechanism can drive the movable plate and the powder spreading component above it to move as a whole, realizing powder spreading in different areas of the workbench surface, expanding the powder spreading range, and improving the flexibility and coverage of powder spreading operations; the height of the support plate, storage bin, and conveyor bin can be adjusted by the extension and retraction of the electric push rod, which makes it easy to adjust the powder falling height according to the powder spreading requirements, control the powder spreading thickness, and adapt to the layer thickness requirements of different 3D laser forming. The servo motor delivers metal powder quantitatively through the grooves on the surface of the conveyor roller; the vibrator promotes the uniform flow of powder in the storage bin, avoiding agglomeration and blockage. With the cooperation of the servo motor and the vibrator, continuous, uniform, and quantitative powder output can be achieved, ensuring powder spreading accuracy and consistency.

[0007] Preferably, the moving mechanism includes an adjustment chamber, which is located inside the worktable. A forward and reverse motor is fixedly connected inside the adjustment chamber. A threaded column is fixedly connected to the output shaft of the forward and reverse motor. A threaded cap is fitted onto the surface of the threaded column. A push plate is fixedly connected to the upper surface of the threaded cap.

[0008] By adopting the above technical solution, the threaded column is driven to rotate by a forward and reverse motor, which in turn drives the threaded cap and push plate to move linearly, thus achieving smooth driving of the movable plate. The structure is simple and the transmission accuracy is high, ensuring the stability of movement during the powder spreading process.

[0009] Preferably, the upper surface of the regulating chamber has a limiting groove, the push plate passes through the limiting groove, the top end of the push plate is fixedly connected to the lower surface of the movable plate, and a bearing is fixedly connected inside the regulating chamber so that a rotating shaft passes through it. The rotating shaft is fixedly connected to a threaded column.

[0010] By adopting the above technical solution, the limiting groove guides and limits the push plate, preventing it from deviating when moving; the combination of the rotating shaft and the threaded column enhances the structural stability, ensures the smoothness of the threaded transmission, and improves the operational reliability of the moving mechanism.

[0011] Preferably, the lower surface of the movable plate is fixedly connected with a pulley, the upper surface of the workbench is provided with a sliding groove, the pulley is movably connected inside the sliding groove, and there are two sets of pulleys and sliding grooves, which are symmetrically arranged on the lower surface of the workbench.

[0012] By adopting the above technical solution, the pulley and the slide groove work together to reduce the friction when the movable plate moves, making the movable plate slide more smoothly. At the same time, it supports and limits the movable plate to prevent it from tilting when moving.

[0013] Preferably, there are two sets of electric push rods and fixed plates, which are symmetrically arranged on the upper surface of the movable plate. The surface of the fixed plate is provided with a movable groove, and the connecting block passes through the interior of the movable groove.

[0014] By adopting the above technical solution, the two sets of electric push rods and fixed plates are symmetrically distributed, so that the support plate is subjected to balanced force and the stability during height adjustment is improved; the movable groove provides moving space for the connecting block, ensuring that the support plate rises and falls smoothly when the electric push rod extends and retracts.

[0015] Preferably, there are two sets of vibrators, which are symmetrically arranged on the surface of the storage bin, and there are multiple grooves, which are evenly arranged on the surface of the conveyor roller.

[0016] By adopting the above technical solution, the two sets of vibrators enhance the vibration effect of the storage bin, further preventing powder agglomeration; multiple evenly distributed grooves ensure that the amount of powder conveyed by the conveyor roller is consistent each time, improving the quantitative accuracy of powder conveying.

[0017] Preferably, the storage bin is fitted with a sealing cover, the upper surface of which is fixedly connected to a handle, and the lower surface of the conveying bin is fixedly connected to a discharge port.

[0018] By adopting the above technical solutions, the sealing cover can prevent the metal powder in the storage bin from getting damp or being mixed with impurities, thus ensuring the quality of the powder; the discharge port provides a directional channel for powder output, making it easy for the powder to fall accurately into the target area.

[0019] Preferably, a mounting frame is fixedly connected to the surface of the discharge port. There are two sets of mounting frames, which are symmetrically arranged on the surface of the discharge port. A bearing is fixedly connected to the surface of the mounting frame so that an extrusion roller passes through it.

[0020] By adopting the above technical solution, the extrusion roller can perform secondary leveling and compaction of the powder output from the discharge port, reduce the voids in the powder layer, improve the powder density and uniformity, and provide a better foundation for subsequent laser forming.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] This 3D laser forming metal powder spreading device features a moving mechanism that drives the movable plate and the powder spreading assembly above it to spread powder over different areas of the worktable surface, expanding the spreading range and improving the flexibility and coverage of the spreading operation. An electric push rod allows for adjustment of the height of the support plate, storage bin, and conveyor bin, facilitating adjustments to the powder drop height and controlling the spreading thickness to meet the layer thickness requirements of different 3D laser forming processes. A servo motor and vibrator are also included. The servo motor delivers metal powder quantitatively through grooves on the surface of the conveyor rollers, while the vibrator promotes uniform powder flow within the storage bin, preventing clumping and blockage. The combined effect of the servo motor and vibrator ensures continuous, uniform, and quantitative powder output, guaranteeing spreading accuracy and consistency. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present application.

[0024] Figure 2 This is a schematic diagram of the structure of the mobile mechanism in this application;

[0025] Figure 3 This is a schematic diagram of the support plate in this application;

[0026] Figure 4 This is a structural schematic diagram of the cross-section of the storage silo in this application;

[0027] Figure 5 This is a structural schematic diagram of the front cross-section of this application.

[0028] In the picture:

[0029] 1. Workbench; 2. Moving mechanism; 3. Movable plate; 4. Electric push rod; 5. Fixed plate; 6. Support plate; 7. Connecting block; 8. Movable groove; 9. Pulley; 10. Slide groove; 11. Storage bin; 12. Conveyor bin; 13. Discharge port; 14. Servo motor; 15. Conveyor roller; 16. Groove; 17. Vibrator; 18. Sealing cover; 19. Handle; 20. Mounting bracket; 21. Extrusion roller; 201. Adjustment bin; 202. Forward and reverse motor; 203. Threaded column; 204. Threaded cap; 205. Rotating shaft; 206. Push plate; 207. Limiting groove. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1 -Appendix Figure 5 This application will be described in further detail below.

[0031] Example 1: A 3D laser forming metal powder spreading device, referring to... Figure 1The system includes a workbench 1, which has a moving mechanism 2 inside. The moving mechanism 2 can drive the movable plate 3 and the powder spreading assembly above it to move as a whole, enabling powder spreading to different areas of the workbench 1 surface, expanding the powder spreading range, and improving the flexibility and coverage of the powder spreading operation. The upper surface of the workbench 1 is provided with a movable plate 3, and a fixed plate 5 and an electric push rod 4 are fixedly connected to the upper surface of the movable plate 3. The height of the support plate 6, the storage bin 11, and the conveying bin 12 can be adjusted by extending and retracting the electric push rod 4, so as to adjust the powder falling height according to the powder spreading requirements, control the powder spreading thickness, and adapt to the layer thickness requirements of different 3D laser forming processes. The electric push rod 4 is located on the side of the fixed plate 5. The upper surface of the movable plate 3 is provided with a support plate 6, and a connecting block 7 is fixedly connected to the surface of the support plate 6. The top end is fixedly connected to the lower surface of the connecting block 7. One end of the support plate 6 is fixedly connected to the storage bin 11. The lower surface of the storage bin 11 is fixedly connected to the conveying bin 12. The surface of the conveying bin 12 is fixedly connected to the servo motor 14. The inside of the conveying bin 12 is fixedly connected to the bearing so that the conveying roller 15 passes through it. The output shaft of the servo motor 14 is fixedly connected to the conveying roller 15. The surface of the conveying roller 15 is provided with a groove 16. The surface of the storage bin 11 is fixedly connected to the vibrator 17. The servo motor 14 conveys metal powder quantitatively through the groove 16 on the surface of the conveying roller 15. The vibrator 17 promotes the uniform flow of powder in the storage bin 11 and avoids agglomeration and blockage. With the cooperation of the servo motor 14 and the vibrator 17, continuous, uniform and quantitative output of powder can be achieved, ensuring the powder spreading accuracy and consistency.

[0032] Please see Figure 1 , Figure 2 and Figure 3 The moving mechanism 2 includes an adjusting chamber 201, which is located inside the worktable 1. A forward and reverse motor 202 is fixedly connected inside the adjusting chamber 201. A threaded column 203 is fixedly connected to the output shaft of the forward and reverse motor 202. A threaded cap 204 is fitted onto the surface of the threaded column 203. A push plate 206 is fixedly connected to the upper surface of the threaded cap 204. The forward and reverse motor 202 drives the threaded column 203 to rotate, which in turn drives the threaded cap 204 and the push plate 206 to move linearly, thus achieving smooth driving of the movable plate 3. The structure is simple and has high transmission accuracy, ensuring stable movement during powder spreading. The upper surface of the regulating chamber 201 has a limiting groove 207, and the push plate 206 passes through the limiting groove 207. The top of the push plate 206 is fixedly connected to the lower surface of the movable plate 3. The interior of the regulating chamber 201 is fixedly connected with a bearing so that a rotating shaft 205 passes through it. The rotating shaft 205 and the threaded column 203 are fixedly connected. The limiting groove 207 guides and limits the push plate 206 to prevent it from deviating when moving. The rotating shaft 205 and the threaded column 203 work together to enhance the structural stability, ensure the smoothness of the threaded transmission, and improve the operational reliability of the moving mechanism 2.

[0033] Please see Figure 1 , Figure 2 and Figure 3 The lower surface of the movable plate 3 is fixedly connected to a pulley 9, and the upper surface of the worktable 1 is provided with a sliding groove 10. The pulley 9 is movably connected inside the sliding groove 10. There are two sets of pulleys 9 and two sets of sliding grooves 10, which are symmetrically arranged on the lower surface of the worktable 1. The pulleys 9 and the sliding grooves 10 cooperate to reduce the friction when the movable plate 3 moves, making the movable plate 3 slide more smoothly. At the same time, they provide support and limit the movable plate 3 to prevent it from tilting when moving. There are two sets of electric push rods 4 and fixed plates 5, which are symmetrically arranged on the upper surface of the movable plate 3. The surface of the fixed plate 5 is provided with a movable groove 8, and the connecting block 7 passes through the movable groove 8. Inside, two sets of electric push rods 4 and fixed plates 5 are symmetrically distributed, so that the support plate 6 is subjected to balanced force and the stability is improved during height adjustment; the movable groove 8 provides moving space for the connecting block 7, ensuring that the support plate 6 rises and falls smoothly when the electric push rods 4 extend and retract; there are two sets of vibrators 17, which are symmetrically arranged on the surface of the storage bin 11; there are multiple grooves 16, which are evenly arranged on the surface of the conveyor roller 15; the two sets of vibrators 17 enhance the vibration effect of the storage bin 11 and further prevent powder from agglomerating; the multiple evenly distributed grooves 16 ensure that the amount of powder conveyed by the conveyor roller 15 is consistent each time, improving the quantitative accuracy of powder conveying.

[0034] Please see Figure 1 , Figure 2 and Figure 3 The storage bin 11 is fitted with a sealing cover 18, and a handle 19 is fixedly connected to the upper surface of the sealing cover 18. The lower surface of the conveying bin 12 is fixedly connected to a discharge port 13. The sealing cover 18 can prevent the metal powder in the storage bin 11 from getting damp or mixed with impurities, thus ensuring the powder quality. The discharge port 13 provides a directional channel for powder output, making it easy for the powder to fall accurately into the target area. The surface of the discharge port 13 is fixedly connected to a mounting frame 20. There are two sets of mounting frames 20, which are symmetrically arranged on the surface of the discharge port 13. The surface of the mounting frame 20 is fixedly connected to a bearing so that a pressing roller 21 can be inserted inside. The pressing roller 21 can perform secondary leveling and compaction on the powder output from the discharge port 13, reducing the gaps in the powder layer, improving the powder density and uniformity, and providing a better foundation for subsequent laser forming.

[0035] The implementation principle of this application embodiment is as follows: First, open the sealing cover 18 and load the metal powder into the storage silo 11, then close the sealing cover 18; adjust the height of the support plate 6 by using the electric push rod 4 so that the distance between the discharge port 13 and the surface of the workbench 1 meets the preset powder spreading thickness requirement; then start the vibrator 17 to loosen the powder in the storage silo 11 and let it fall into the conveying silo 12; and start the servo motor 14 to drive the conveying roller 15 to rotate. The groove 16 carries a fixed amount of powder and rotates with the conveying roller 15 to the discharge port 13 and falls down. Then, start the moving mechanism 2. The forward and reverse motors 202 drive the threaded column 203 to rotate, causing the threaded cap 204, push plate 206 and movable plate 3 to move along the slide 10. During the movement of the movable plate 3, the discharge port 13 continuously outputs powder, and the extrusion roller 21 flattens and compacts the falling powder. When the movable plate 3 moves to one end of the worktable 1, the moving mechanism 2 runs in reverse, driving the powder spreading component to return and repeating the powder spreading action until a layer of powder is laid. According to the requirements of 3D laser forming, the height is adjusted by the electric push rod 4 and then the next layer of powder spreading cycle begins.

Claims

1. A 3D laser forming metal powder spreading device, comprising a worktable (1), characterized in that: The workbench (1) is equipped with a moving mechanism (2) inside. The upper surface of the workbench (1) is equipped with a movable plate (3). A fixed plate (5) and an electric push rod (4) are fixedly connected to the upper surface of the movable plate (3). The electric push rod (4) is located on the side of the fixed plate (5). A support plate (6) is provided on the upper surface of the movable plate (3). A connecting block (7) is fixedly connected to the surface of the support plate (6). The top end of the electric push rod (4) is fixedly connected to the lower surface of the connecting block (7). One end of the support plate (6) is fixedly connected to a storage bin (11), the lower surface of the storage bin (11) is fixedly connected to a conveying bin (12), the surface of the conveying bin (12) is fixedly connected to a servo motor (14), the inside of the conveying bin (12) is fixedly connected to a bearing so that a conveying roller (15) passes through it, the output shaft of the servo motor (14) is fixedly connected to the conveying roller (15), the surface of the conveying roller (15) is provided with a groove (16), and the surface of the storage bin (11) is fixedly connected to a vibrator (17).

2. The 3D laser forming metal powder spreading device according to claim 1, characterized in that: The moving mechanism (2) includes an adjustment chamber (201), which is located inside the workbench (1). A forward and reverse motor (202) is fixedly connected inside the adjustment chamber (201). A threaded column (203) is fixedly connected to the output shaft of the forward and reverse motor (202). A threaded cap (204) is fitted onto the surface of the threaded column (203). A push plate (206) is fixedly connected to the upper surface of the threaded cap (204).

3. The 3D laser forming metal powder spreading device according to claim 2, characterized in that: The upper surface of the regulating chamber (201) has a limiting groove (207), the push plate (206) passes through the inside of the limiting groove (207), the top of the push plate (206) is fixedly connected to the lower surface of the movable plate (3), the inside of the regulating chamber (201) is fixedly connected to a bearing so that a rotating shaft (205) passes through it, and the rotating shaft (205) is fixedly connected to a threaded column (203).

4. The 3D laser forming metal powder spreading device according to claim 1, characterized in that: The lower surface of the movable plate (3) is fixedly connected with a pulley (9), and the upper surface of the workbench (1) is provided with a sliding groove (10). The pulley (9) is movably connected inside the sliding groove (10). There are two sets of pulleys (9) and sliding grooves (10), which are symmetrically arranged on the lower surface of the workbench (1).

5. The 3D laser forming metal powder spreading device according to claim 1, characterized in that: There are two sets of electric push rods (4) and fixed plates (5), which are symmetrically arranged on the upper surface of the movable plate (3). The surface of the fixed plate (5) is provided with a movable groove (8), and the connecting block (7) passes through the interior of the movable groove (8).

6. The 3D laser forming metal powder spreading device according to claim 1, characterized in that: There are two sets of vibrators (17) and they are symmetrically arranged on the surface of the storage bin (11). There are multiple grooves (16) and they are evenly arranged on the surface of the conveyor roller (15).

7. The 3D laser forming metal powder spreading device according to claim 1, characterized in that: The storage bin (11) is provided with a sealing cover (18), and a handle (19) is fixedly connected to the upper surface of the sealing cover (18). The lower surface of the conveying bin (12) is fixedly connected with a discharge port (13).

8. The 3D laser forming metal powder spreading device according to claim 7, characterized in that: The surface of the discharge port (13) is fixedly connected to a mounting bracket (20). There are two sets of mounting brackets (20), which are symmetrically arranged on the surface of the discharge port (13). The surface of the mounting bracket (20) is fixedly connected to a bearing so that an extrusion roller (21) passes through it.

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