A uniform powder baking device for metal 3D printing

Abstract

The utility model relates to the technical field of 3D printing, and discloses a uniform powder drying device for metal 3D printing, including a base, a support plate fixedly connected to the top of the base, a bracket fixedly connected to one side of the support plate, a motor 1 fixedly connected to one side of the bracket, a connecting rod fixedly connected to the output end of the motor 1, a guide column fixedly connected to one end of the connecting rod, a rotating shaft 1 rotatably connected inside the bracket, a guide rod fixedly connected to the outer wall of the rotating shaft 1, the outer wall of the guide column slidably connected inside the guide rod, and a sector gear fixedly connected to the outer wall of the rotating shaft 1. In the utility model, the connecting rod slides in the guide rod through the guide column, and the guide column drives the rotating shaft 1 to drive the transmission gear to reciprocate through the sector gear, driving the drying cylinder to swing, achieving the effect of shaking the metal powder evenly, solving the problem of water vapor accumulating inside the metal powder, requiring the operator to manually and regularly stir the metal powder, and improving the drying efficiency of the powder drying device.

Description

Technical Field

[0001] The utility model relates to the technical field of 3D printing, in particular to a uniform powder baking device for metal 3D printing. Background Art

[0002] Metal 3D printing is an advanced manufacturing technology that uses a process called metal additive manufacturing to manufacture metal parts. Compared with traditional subtractive manufacturing processes, metal 3D printing has many advantages, including high flexibility, strong ability to manufacture complex geometries, reduced material waste, and shortened production cycles. Metal powders may absorb moisture during storage and transportation, causing their water content to increase. If untreated wet metal powder is used for printing, it will cause pores and other defects during the printing process, so a uniform powder baking device for metal 3D printing is required.

[0003] During the use of traditional metal 3D printing uniform powder drying equipment, the cooperation between the air holes opened on the collection plate, the heater and the fan accelerates the flow of air inside the drying tank and the drying efficiency of the metal powder on the collection plate. When the drying is completed, the internal water vapor is discharged through the fan.

[0004] However, the problem of being unable to evenly dry the metal powder inside has not been solved. The metal powder accumulates inside the drying cylinder. When the heating plate heats it, water vapor accumulates inside the metal powder, requiring the operator to manually stir the metal powder at regular intervals, reducing the drying efficiency of the uniform powder drying equipment for metal 3D printing. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a uniform powder baking device for metal 3D printing, which aims to improve the problem that water vapor accumulates inside the metal powder and requires the operator to manually stir the metal powder at a regular interval.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a uniform powder baking device for metal 3D printing, comprising a base, a support plate fixedly connected to the top of the base, a bracket fixedly connected to one side of the support plate, a motor 1 fixedly connected to one side of the bracket, a connecting rod fixedly connected to the output end of the motor 1, a guide column fixedly connected to one end of the connecting rod, a rotating shaft 1 rotatably connected inside the bracket, a guide rod fixedly connected to the outer wall of the rotating shaft 1, a fan-shaped gear fixedly connected to the outer wall of the guide column in a sliding manner inside the guide rod, a rotating shaft 1 rotatably connected inside the bracket, a rotating shaft 2 rotatably connected inside the bracket, the outer wall of the rotating shaft 2 is penetrated into the support plate, one end of the rotating shaft 2 is fixedly connected to a transmission gear, the transmission gear is meshed with the outer wall of the fan gear, the other end of the rotating shaft 2 is fixedly connected to a C-shaped column, one side of the C-shaped column is fixedly connected to a drying cylinder, a limiting component is arranged on the other side of the C-shaped column, a limiting groove is provided inside the support plate, and a heating plate is fixedly connected to the bottom of the drying cylinder.

[0007] As a further description of the above technical solution:

[0008] The limiting assembly comprises a limiting block, one end of which is fixedly connected to the other side of the C-shaped column, and the outer wall of the limiting block is slidably connected to the inside of the limiting groove.

[0009] As a further description of the above technical solution:

[0010] The C-shaped column is internally threadedly connected with a threaded rod, and one end of the threaded rod is rotatably connected with a top cover.

[0011] As a further description of the above technical solution:

[0012] The bottom of the C-shaped column is fixedly connected with a second motor, and the output end of the second motor is fixedly connected with a transmission shaft.

[0013] As a further description of the above technical solution:

[0014] The interior of the drying cylinder is fixedly connected with a limiting sleeve, and the interior of the limiting sleeve is rotatably connected to the outer wall of the transmission shaft.

[0015] As a further description of the above technical solution:

[0016] The outer wall of the transmission shaft is fixedly connected with a cross bar, and the outer wall of the cross bar is fixedly connected with an inclined rod.

[0017] As a further description of the above technical solution:

[0018] A support column is fixedly connected to the outer wall of the transmission shaft, a limit plate is slidably connected inside the support column, a scraper is fixedly connected to one side of the limit plate, one side of the scraper is attached to the inner wall of the drying cylinder, a sealing ring is fixedly connected to the inside of the support column, and the inner wall of the sealing ring is attached to the outer wall of the scraper.

[0019] As a further description of the above technical solution:

[0020] A telescopic rod is arranged inside the support column, a spring is sleeved on the outer wall of the telescopic rod, one end of the telescopic rod and the spring are fixedly connected to the other side of the limit plate, and the other end of the telescopic rod and the spring are fixedly connected inside the support column.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, first, the connecting rod slides in the guide rod through the guide column, the guide rod swings back and forth through the guide column, the guide column drives the rotating shaft 1 to drive the transmission gear to rotate back and forth through the fan gear, the transmission gear drives the C-shaped column to swing back and forth through the rotating shaft 2, and then drives the drying cylinder to swing, so as to achieve the effect of evenly shaking the metal powder in the drying cylinder, solve the problem that water vapor accumulates inside the metal powder and the operator needs to manually stir the metal powder at a fixed time, and improves the drying efficiency of the uniform powder drying equipment for metal 3D printing.

[0023] 2. In the utility model, the transmission shaft drives the scraper to scrape off the metal powder adhered to the inner wall of the drying cylinder. The scraper is supported by the tension of the spring, so that the scraper can always fit the inner wall of the drying cylinder, thereby achieving the effect of scraping off the metal powder adhered to the inside of the drying cylinder. This solves the problem that the metal powder of the traditional uniform powder drying equipment for metal 3D printing adheres to the inner wall of the drying cylinder, and the operator needs to scrape it off manually, which increases the labor intensity of the operator, and reduces the labor intensity of the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a three-dimensional diagram of a uniform powder baking device for metal 3D printing proposed by the utility model;

[0025] Figure 2 This is a schematic diagram of the support structure of a uniform powder baking device for metal 3D printing proposed by the utility model;

[0026] Figure 3 This is a schematic diagram of the guide column structure of a uniform powder baking device for metal 3D printing proposed by the utility model;

[0027] Figure 4 This is a schematic diagram of the internal structure of a support plate of a uniform powder baking device for metal 3D printing proposed by the utility model;

[0028] Figure 5This is a schematic diagram of the internal structure of a drying drum of a uniform powder drying device for metal 3D printing proposed by the utility model;

[0029] Figure 6 This is a schematic diagram of the internal structure of a support column of a uniform powder baking device for metal 3D printing proposed by the utility model.

[0030] Legend:

[0031] 1. Base; 2. Support plate; 3. Bracket; 4. Motor 1; 5. Connecting rod; 6. Guide column; 7. Rotating shaft 1; 8. Guide rod; 9. Fan gear; 10. Rotating shaft 2; 11. Transmission gear; 12. C-shaped column; 13. Limiting groove; 14. Limiting block; 15. Drying cylinder; 16. Top cover; 17. Threaded rod; 18. Motor 2; 19. Heating plate; 20. Limiting sleeve; 21. Transmission shaft; 22. Cross bar; 23. Oblique rod; 24. Support column; 25. Scraper; 26. Limiting plate; 27. Telescopic rod; 28. Spring; 29. ​​Sealing ring. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] Reference Figure 1-Figure 3, an embodiment provided by the utility model: a uniform powder baking device for metal 3D printing, comprising a base 1, a support plate 2 is fixedly connected to the top of the base 1, a bracket 3 is fixedly connected to one side of the support plate 2, a motor 4 is fixedly connected to one side of the bracket 3, a connecting rod 5 is fixedly connected to the output end of the motor 4, a guide column 6 is fixedly connected to one end of the connecting rod 5, a rotating shaft 7 is rotatably connected inside the bracket 3, a guide rod 8 is fixedly connected to the outer wall of the rotating shaft 7, an outer wall of the guide column 6 is slidably connected inside the guide rod 8, a sector gear 9 is fixedly connected to the outer wall of the rotating shaft 7, a rotating shaft 2 10 is rotatably connected inside the bracket 3, and the outer wall of the rotating shaft 2 10 is penetrated inside the support plate 2 , one end of the second rotating shaft 10 is fixedly connected with a transmission gear 11, the transmission gear 11 is meshed with the outer wall of the sector gear 9, the other end of the second rotating shaft 10 is fixedly connected with a C-shaped column 12, one side of the C-shaped column 12 is fixedly connected with a drying cylinder 15, and a limiting component is arranged on the other side of the C-shaped column 12, a limiting groove 13 is provided inside the support plate 2, and a heating plate 19 is fixedly connected to the bottom of the drying cylinder 15. The limiting component includes a limiting block 14, one end of the limiting block 14 is fixedly connected to the other side of the C-shaped column 12, and the outer wall of the limiting block 14 is slidably connected to the inside of the limiting groove 13, and a threaded rod 17 is threadedly connected to the inside of the C-shaped column 12, and one end of the threaded rod 17 is rotatably connected to a top cover 16;

[0034] Specifically, first, the threaded rod 17 is rotated, which will lift the top cover 16 to expose the interior of the drying drum 15. Subsequently, the metal powder to be dried is carefully placed inside the drying drum 15. After the metal powder is placed, the threaded rod 17 is rotated again to tightly cover the top cover 16 with the drying drum 15. This step is crucial, ensuring that the drying process is carried out in a closed environment, which is conducive to the retention and transfer of heat. Subsequently, the heating plate 19 is started to heat the drying drum 15. During the heating process, the moisture inside the metal powder will gradually evaporate and be discharged through the exhaust hole of the top cover 16, ensuring the thoroughness of the drying of the metal powder. At the same time, the motor 14 starts to work, and the output end drives the connecting rod 5 to rotate. The connecting rod 5 slides smoothly in the guide rod 8 through the guide column 6. One end of the guide rod 8 rotates with the rotating shaft 17 as the center of the circle, so that the guide rod 8 swings back and forth through the guide column 6. Next, the rotating shaft 17 drives the transmission gear 11 to rotate back and forth through the fan gear 9. The transmission gear 11 drives the C-shaped column 12 to swing back and forth through the rotating shaft 2 10. This series of transmission processes realizes the vibration of the drying cylinder 15, so that the metal powder inside the drying cylinder 15 is continuously shaken and stirred during the heating process, which is conducive to the uniform drying of the metal powder.

[0035] Reference Figure 4-Figure 6, the bottom of the C-shaped column 12 is fixedly connected to a motor 2 18, the output end of the motor 2 18 is fixedly connected to a transmission shaft 21, the drying cylinder 15 is fixedly connected to a limited sleeve 20, the limited sleeve 20 is internally rotatably connected to the outer wall of the transmission shaft 21, the outer wall of the transmission shaft 21 is fixedly connected to a cross bar 22, the outer wall of the cross bar 22 is fixedly connected to an oblique rod 23, the outer wall of the transmission shaft 21 is fixedly connected to a support column 24, the support column 24 is slidably connected to a limited plate 26, one side of the limited plate 26 is fixedly connected to a scraper 25, one side of the scraper 25 is attached to the inner wall of the drying cylinder 15, the support column 24 is fixedly connected to a sealing ring 29, the inner wall of the sealing ring 29 is attached to the outer wall of the scraper 25, a telescopic rod 27 is arranged inside the support column 24, and a spring 28 is arranged on the outer wall of the telescopic rod 27, one end of the telescopic rod 27 and the spring 28 are fixedly connected to the other side of the limit plate 26, and the other end of the telescopic rod 27 and the spring 28 are fixedly connected to the inside of the support column 24;

[0036] Specifically, the output end of the motor 21 drives the transmission shaft 21 to rotate. The transmission shaft 21 drives the cross bar 22 to move. The movement of the cross bar 22 is transmitted to the inclined rod 23, so that it stirs inside the drying cylinder 15. This stirring action greatly promotes the uniform distribution of the material in the drying cylinder 15 and improves the drying efficiency. Driven by the transmission shaft 21, the scraper 25 begins to scrape off the metal powder on the inner wall of the drying cylinder 15, which can prevent the metal powder from wearing the equipment during the drying process and avoid the metal powder from remaining in the dried product, thereby ensuring the quality of the product. The working range of the scraper 25 is limited by the limit plate 26, and this limitation is achieved by the support column 24. The support column 24 plays a stabilizing role, allowing the scraper 25 to maintain a stable position when cleaning the metal powder. At the same time, the tension of the spring 28 also plays a supporting role, allowing the scraper 25 to always fit closely to the inner wall of the drying cylinder 15, thereby improving the cleaning effect. In this process, the sealing ring 29 between the support column 24 and the scraper 25 plays a sealing role, which can effectively prevent the metal powder from entering the support column 24. In this way, it is possible to avoid the metal powder from getting stuck inside the support column 24 and causing equipment failure.

[0037] Working principle: When using the uniform powder drying device for metal 3D printing, first rotate the threaded rod 17 to lift the top cover 16, then put the metal powder to be dried into the drying cylinder 15, then rotate the threaded rod 17 to cover the top cover 16 and the drying cylinder 15, then start the heating plate 19 to heat the drying cylinder 15 to dry the metal powder inside the drying cylinder 15, and at the same time, the output end of the motor 4 drives the connecting rod 5 to rotate, and the connecting rod 5 slides in the guide rod 8 through the guide column 6, and one end of the guide rod 8 rotates with the rotating shaft 7 as the center of the circle, so the guide rod 8 swings back and forth through the guide column 6, and then the rotating shaft 7 drives the transmission gear 11 to rotate back and forth through the fan gear 9, and the transmission gear 11 rotates back and forth through the fan gear 9. The rotating shaft 10 drives the C-shaped column 12 to swing back and forth, and then drives the drying cylinder 15 to swing, so that the metal powder inside it is shaken and dispersed. At the same time, the output end of the motor 18 drives the transmission shaft 21 to rotate. The transmission shaft 21 drives the inclined rod 23 to stir the inside of the drying cylinder 15 through the cross bar 22. The transmission shaft 21 drives the scraper 25 to scrape off the metal powder adhered to the inner wall of the drying cylinder 15. The scraper 25 is limited inside the support column 24 by the limiting plate 26, and is supported by the tension of the spring 28, so that the scraper 25 can always fit the inner wall of the drying cylinder 15, and the support column 24 and the scraper 25 are sealed by the sealing ring 29, which can effectively reduce the metal powder from entering the support column 24 and getting stuck.

[0038] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A uniform powder baking device for metal 3D printing, comprising a base (1), characterized in that: The top of the base (1) is fixedly connected to a support plate (2), one side of the support plate (2) is fixedly connected to a bracket (3), one side of the bracket (3) is fixedly connected to a motor (4), the output end of the motor (4) is fixedly connected to a connecting rod (5), one end of the connecting rod (5) is fixedly connected to a guide column (6), the bracket (3) is rotatably connected to a rotating shaft (7), the outer wall of the rotating shaft (7) is fixedly connected to a guide rod (8), the outer wall of the guide column (6) is slidably connected to the inside of the guide rod (8), the outer wall of the rotating shaft (7) is fixedly connected to a sector gear (9), and the bracket (3) ) is rotatably connected to a second rotating shaft (10) inside, the outer wall of the second rotating shaft (10) is passed through the inside of the support plate (2), one end of the second rotating shaft (10) is fixedly connected to a transmission gear (11), the transmission gear (11) is meshed with the outer wall of the sector gear (9), the other end of the second rotating shaft (10) is fixedly connected to a C-shaped column (12), one side of the C-shaped column (12) is fixedly connected to a drying cylinder (15), the other side of the C-shaped column (12) is provided with a limiting component, a limiting groove (13) is provided inside the support plate (2), and a heating plate (19) is fixedly connected to the bottom of the drying cylinder (15).

2. The uniform powder baking device for metal 3D printing according to claim 1, characterized in that: The limiting assembly comprises a limiting block (14), one end of the limiting block (14) is fixedly connected to the other side of the C-shaped column (12), and the outer wall of the limiting block (14) is slidably connected to the inside of the limiting groove (13).

3. The uniform powder baking device for metal 3D printing according to claim 1, characterized in that: The C-shaped column (12) is internally threadedly connected to a threaded rod (17), and one end of the threaded rod (17) is rotatably connected to a top cover (16).

4. The uniform powder baking device for metal 3D printing according to claim 1, characterized in that: The bottom of the C-shaped column (12) is fixedly connected to a second motor (18), and the output end of the second motor (18) is fixedly connected to a transmission shaft (21).

5. The uniform powder baking device for metal 3D printing according to claim 1, characterized in that: A limiting sleeve (20) is fixedly connected inside the drying cylinder (15), and the limiting sleeve (20) is rotatably connected inside the outer wall of the transmission shaft (21).

6. The uniform powder baking device for metal 3D printing according to claim 4, characterized in that: The outer wall of the transmission shaft (21) is fixedly connected to a cross bar (22), and the outer wall of the cross bar (22) is fixedly connected to an inclined bar (23).

7. The uniform powder baking device for metal 3D printing according to claim 4, characterized in that: The outer wall of the transmission shaft (21) is fixedly connected to a support column (24), the support column (24) is slidably connected to a limit plate (26), one side of the limit plate (26) is fixedly connected to a scraper (25), one side of the scraper (25) is attached to the inner wall of the drying cylinder (15), and the support column (24) is fixedly connected to a sealing ring (29), the inner wall of the sealing ring (29) is attached to the outer wall of the scraper (25).

8. The uniform powder baking device for metal 3D printing according to claim 7, characterized in that: A telescopic rod (27) is arranged inside the support column (24), and a spring (28) is sleeved on the outer wall of the telescopic rod (27). One end of the telescopic rod (27) and the spring (28) are both fixedly connected to the other side of the limit plate (26), and the other ends of the telescopic rod (27) and the spring (28) are both fixedly connected to the inside of the support column (24).

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