Printing raw material stirring device

Abstract

The utility model discloses a printing raw material stirring device, and particularly relates to the field of 3D printing raw material stirring, the printing raw material stirring device comprises a stirring box body, a servo motor is fixedly installed at the top end of the stirring box body, an output shaft of the servo motor is fixedly connected with a main stirring shaft arranged in the stirring box body, and a partition plate is fixedly installed in the stirring box body; a driving gear is fixedly installed on the outer side wall, located above the partition plate, of the main stirring shaft, driven gears are arranged at the two ends of the driving gear in a meshed mode, auxiliary stirring shafts are fixedly arranged in the middles of the driven gears, a scraping ring is arranged in the stirring box body, and pull ropes are arranged on the two sides of the upper end of the scraping ring. The pull rope penetrates through the partition plate and the side wall of the stirring box body and is wound on the winding wheel. The scraping ring is located at the top end of the stirring box body, contact between the scraping ring and 3D printing raw materials is reduced, the phenomenon that the raw materials adhere to the scraping ring to affect follow-up use is avoided, frequent scraping ring cleaning is not needed, and using is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of 3D printing material stirring, in particular to a printing material stirring device. Background Art

[0002] 3D printing is a type of rapid prototyping technology, also known as additive manufacturing. It is a technology that uses digital model files as the basis and uses powdered metal or plastic and other bondable materials to construct objects by printing layer by layer. 3D printing is usually achieved using digital technology material printers. This technology is used in jewelry, footwear, industrial design, architecture, engineering and construction (AEC), automobiles, aerospace, dental and medical industries, education, geographic information systems, civil engineering, firearms and other fields. There are already parts printed using this technology, and the raw materials for 3D printing need to be mixed and blended before they can be used, so a new type of 3D printing raw material mixer is needed.

[0003] During 3D printing, the 3D printer needs to be injected with printing materials, which need to be mixed with different solids and liquids. Since 3D printing materials have good rapid solidification, the inner wall of the existing stirring equipment is easily attached with printing materials during the stirring process, and it is not easy to clean. Some 3D printing material stirring devices are equipped with cleaning rods and cleaning brushes inside, and the inner wall of the stirring device is cleaned by the rotation of the cleaning rods and cleaning brushes. However, the cleaning rods and cleaning brushes are mostly in direct contact with the 3D printing materials, and a large amount of 3D printing materials will remain on the cleaning brush, which not only causes waste of 3D printing materials, but also pollutes new materials during subsequent use. Utility Model Content

[0004] The purpose of the utility model is to provide a printing material stirring device to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a printing material stirring device, comprising a stirring box, a servo motor is fixedly installed on the top of the stirring box, the output shaft of the servo motor passes through the side wall of the stirring box and is fixedly connected to a main stirring shaft arranged inside the stirring box, a partition is fixedly installed inside the stirring box, a driving gear is fixedly installed on the outer wall of the main stirring shaft above the partition, both ends of the driving gear are meshed with driven gears, the middle position of the driven gear is fixedly provided with a driven stirring shaft, a scraper ring is arranged inside the stirring box, pull ropes are arranged on both sides of the upper end of the scraper ring, the pull rope passes through the partition and the side wall of the stirring box, and is wound around a winding wheel.

[0006] In a preferred embodiment, each of the main stirring shaft and the slave stirring shaft is fixedly provided with a stirring rod, and the stirring rods on the main stirring shaft and the stirring rods on the slave stirring shaft are staggered with each other. The staggered arrangement of multiple groups of stirring rods has a better stirring effect on the 3D printing raw materials.

[0007] In a preferred embodiment, the main stirring shaft and the slave stirring shaft are both arranged through a partition, and sealed bearings are provided at the connections between the main stirring shaft and the slave stirring shaft and the partition. An annular limiting groove is provided at the bottom edge of the partition. The setting of the partition can prevent the 3D printing raw materials from contaminating the driving gear and the driven gear, thereby increasing the service life of the driving gear and the driven gear.

[0008] In a preferred embodiment, the upper end of the scraper ring is provided with a conical structure matching the annular limiting groove, and the bottom end of the scraper ring is fixedly provided with an annular scraper. The conical structure at the upper end of the scraper ring can match the annular limiting groove at the lower end of the partition, so that the limiting effect of the scraper ring is better, and the annular scraper can scrape off the raw materials remaining on the inner wall of the mixing box.

[0009] In a preferred embodiment, the pull rope is connected to the winding wheel through a guide wheel, the upper end of the winding wheel is fixedly set on the driven sprocket, the two driven sprockets are connected to the driving sprocket through chain transmission, and the bottom end of the driving sprocket is set on the top of the mixing box through ball rotation. The setting of the guide wheel facilitates the pull rope to change direction and connect with the winding wheel.

[0010] In a preferred embodiment, the middle position of the driving sprocket is set as a hollow structure, and a plurality of mounting seats are evenly spaced on the inner wall of the driving sprocket, a limiting rod is hingedly provided on each of the mounting seats, a support plate is fixedly provided on the output shaft of the servo motor on the inner side of the driving sprocket, a plurality of limiting seats are evenly spaced on the outer wall of the support plate, and a limiting hole is provided on each of the limiting seats, and the setting of the limiting rod, the limiting seat and the limiting hole is utilized to conveniently drive the driving sprocket to rotate, and when the driving sprocket rotates, the driven sprocket can be driven to rotate through the chain.

[0011] Compared with the prior art, the beneficial effects achieved by the utility model are:

[0012] 1. The present application is provided with structures such as a scraper ring, a pull rope, a winding wheel, a sprocket, a chain, a support plate, and a limit rod. The rotation of the servo motor can make the winding wheel reel in the pull rope, and the pull rope pulls the scraper ring to move in the vertical direction. The annular scraper at the lower end of the scraper ring contacts the inner wall of the mixing box body, and can scrape off the residual raw materials on the inner wall of the mixing box body. When not in use, the scraper ring is located at the top of the mixing box body, reducing the contact between the scraper ring and the 3D printing raw materials, preventing the scraper ring from being adhered to the raw materials and affecting the subsequent use, and there is no need to frequently clean the scraper ring, which is more convenient to use;

[0013] 2. The present application is provided with a driving gear, a driven gear, a main stirring shaft, a slave stirring shaft and multiple groups of stirring rods, etc., and uses multiple groups of staggered stirring rods to stir the 3D printing raw materials, which can not only improve the stirring efficiency of the 3D printing raw materials, but also improve the stirring effect of the 3D printing raw materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0015] Figure 1 It is a three-dimensional diagram of the utility model;

[0016] Figure 2 It is a schematic diagram of the internal structure of the stirring box of the utility model;

[0017] Figure 3 This utility model Figure 2 A schematic diagram of the structure enlargement in the middle;

[0018] Figure 4 It is a structural schematic diagram of the scraper ring of the utility model;

[0019] Figure 5 It is a structural schematic diagram of the driving sprocket and the supporting disk of the utility model.

[0020] In the figure: 1. stirring box; 2. servo motor; 3. main stirring shaft; 4. partition; 5. driving gear; 6. driven gear; 7. slave stirring shaft; 8. scraper ring; 9. pull rope; 10. take-up wheel; 11. stirring rod; 12. annular limit groove; 13. conical structure; 14. annular scraper; 15. guide wheel; 16. driven sprocket; 17. chain; 18. driving sprocket; 19. mounting seat; 20. limit rod; 21. support plate; 22. limit seat; 23. limit hole. DETAILED DESCRIPTION

[0021] 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.

[0022] See also Figure 1-Figure 5The utility model provides a printing material stirring device, including a stirring box 1, a servo motor 2 is fixedly installed on the top of the stirring box 1, the output shaft of the servo motor 2 passes through the side wall of the stirring box 1, and is fixedly connected to a main stirring shaft 3 arranged inside the stirring box 1, a partition 4 is fixedly installed inside the stirring box 1, a driving gear 5 is fixedly installed on the outer side wall of the main stirring shaft 3 located above the partition 4, both ends of the driving gear 5 are meshed with driven gears 6, and the middle position of the driven gear 6 is fixedly provided with a slave stirring shaft 7, a scraping ring 8 is arranged inside the stirring box 1, and pull ropes 9 are arranged on both sides of the upper end of the scraping ring 8, the pull rope 9 passes through the partition 4 and the side wall of the stirring box 1, and is wound around a winding wheel 10.

[0023] In a preferred embodiment, each of the main stirring shaft 3 and the slave stirring shaft 7 is fixedly provided with a stirring rod 11, and the stirring rods 11 on the main stirring shaft 3 and the stirring rods 11 on the slave stirring shaft 7 are staggered with each other. The staggered arrangement of multiple groups of stirring rods 11 has a better stirring effect on the 3D printing material.

[0024] In a preferred embodiment, the main stirring shaft 3 and the slave stirring shaft 7 are both arranged through the partition 4, and sealed bearings are provided at the connections between the main stirring shaft 3 and the slave stirring shaft 7 and the partition 4. An annular limiting groove 12 is opened at the bottom edge of the partition 4. The setting of the sealed bearing facilitates the rotation of the main stirring shaft 3 and the slave stirring shaft 7.

[0025] In a preferred embodiment, the upper end of the scraper ring 8 is provided with a conical structure 13 matching the annular limiting groove 12, and the bottom end of the scraper ring 8 is fixedly provided with an annular scraper 14. When the scraper ring 8 moves upward, the conical structure 13 docks with the annular limiting groove 12 at the bottom end of the partition 4, which facilitates the limiting and fixing of the scraper ring 8.

[0026] In a preferred embodiment, the pull rope 9 is connected to the winding wheel 10 through a guide wheel 15, and the upper end of the winding wheel 10 is fixedly set on a driven sprocket 16. The two driven sprockets 16 are connected to a driving sprocket 18 through a chain 17. The bottom end of the driving sprocket 18 is set on the top of the mixing box 1 through a ball rotation. When the driving sprocket 18 rotates, it can drive the driven sprocket 16 to rotate through the chain 17, and the driven sprocket 16 can drive the winding wheel 18 to rotate. The winding wheel 18 can reel in the pull rope 9, and use the pull rope 9 to pull the scraper ring 8 up and down.

[0027] In a preferred embodiment, the middle position of the driving sprocket 18 is set to a hollow structure, and a plurality of mounting seats 19 are evenly spaced on the inner wall of the driving sprocket 18, and a limiting rod 20 is hingedly set on each of the mounting seats 19. A support plate 21 is fixedly set on the output shaft of the servo motor 2 on the inner side of the driving sprocket 18, and a plurality of limiting seats 22 are evenly spaced on the outer wall of the support plate 21, and a limiting hole 23 is set on each of the limiting seats 22. When the servo motor 2 rotates forward, it cannot drive the driving sprocket 18 to rotate, but can drive the driving sprocket 18 to rotate when it rotates reversely. One end face of the limiting seat 22 is inclined, and the other end face is vertically set, and the limiting hole 23 is set on the vertical end face of the limiting seat 22, so that the limiting rod 20 is conveniently inserted into the limiting hole 23.

[0028] The working principle of this utility model:

[0029] When in use, the 3D printing raw materials to be mixed are introduced into the stirring box 1 through the feed port, and the feed port is set on one side below the partition 4, and then the servo motor 2 is turned on, and the servo motor 2 drives the main stirring shaft 3 to rotate forward. When the main stirring shaft 3 rotates forward, it can drive the driving gear 5 to rotate. When the driving gear 5 rotates, it can drive the two driven gears 6 to rotate, and the driven gear 6 drives the slave stirring shaft 7 to rotate. The main stirring shaft 3 and the slave stirring shaft 7 drive the stirring rod 11 to rotate, and the 3D printing raw materials are stirred and mixed by the staggered stirring rods 11. After stirring and mixing evenly, the raw materials can be discharged through the discharge port at the bottom of the stirring box 1. In order to prevent the driven sprocket 16 and the winding wheel 10 from rotating under the gravity of the scraper ring 8 during the forward rotation of the servo motor 2, screws can be used to limit the driven sprocket 16;

[0030] When the inner wall of the mixing box 1 needs to be cleaned, the screws limiting the driven sprocket 16 are removed, and the servo motor 2 is turned on after all the 3D printing materials are exported. When the servo motor 2 rotates in the opposite direction, the limiting rod 20 can be inserted into the limiting hole 23. When the servo motor 2 drives the support plate 21 to rotate, the driving sprocket 18 can rotate. When the driving sprocket 18 rotates, it can drive the two driven sprockets 16 to rotate through the chain 17. When the driven sprocket 16 rotates, it can drive the two winding wheels 10 to rotate, and the winding wheel 10 loosens the pull rope 9. After the scraper ring 8 loses the pulling force of the pull rope 9, it moves downward under the action of gravity. The annular scraper 14 at the bottom of the scraper ring 8 can scrape off the solid raw materials remaining on the side wall of the mixing box 1. The scraped solid raw materials can be discharged through the discharge port at the bottom of the mixing box 1. Then, the servo motor 2 is turned, and the driven sprocket 16 and the winding wheel 10 are manually turned to wind up the pull rope 9, so that the pull rope 9 lifts the scraper ring 8, so that the conical structure 13 at the top of the scraper ring 8 is located in the annular limit groove 12 at the bottom of the partition 4, thereby realizing the storage of the scraper ring 8.

[0031] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A printing material stirring device, comprising a stirring box (1), characterized in that: A servo motor (2) is fixedly mounted on the top of the stirring box (1); the output shaft of the servo motor (2) passes through the side wall of the stirring box (1) and is fixedly connected to a main stirring shaft (3) arranged inside the stirring box (1); a partition (4) is fixedly mounted inside the stirring box (1); a driving gear (5) is fixedly mounted on the outer wall of the main stirring shaft (3) located above the partition (4); driven gears (6) are meshed at both ends of the driving gear (5); a driven stirring shaft (7) is fixedly mounted in the middle of the driven gear (6); a scraper ring (8) is arranged inside the stirring box (1); pull ropes (9) are arranged on both sides of the upper end of the scraper ring (8); the pull ropes (9) pass through the partition (4) and the side wall of the stirring box (1) and are wound around a winding wheel (10).

2. A printing material stirring device according to claim 1, characterized in that: A stirring rod (11) is fixedly arranged on each of the main stirring shaft (3) and the secondary stirring shaft (7), and the stirring rod (11) on the main stirring shaft (3) and the stirring rod (11) on the secondary stirring shaft (7) are arranged in an interlaced manner.

3. A printing material stirring device according to claim 2, characterized in that: The main stirring shaft (3) and the secondary stirring shaft (7) are both arranged through the partition (4), and sealed bearings are arranged at the connection between the main stirring shaft (3) and the secondary stirring shaft (7) and the partition (4), and an annular limiting groove (12) is opened at the bottom edge of the partition (4).

4. A printing material stirring device according to claim 3, characterized in that: The upper end of the scraper ring (8) is provided with a conical structure (13) matching the annular limiting groove (12), and the bottom end of the scraper ring (8) is fixedly provided with an annular scraper (14).

5. A printing material stirring device according to claim 4, characterized in that: The pull rope (9) is connected to the winding wheel (10) through a guide wheel (15); the upper end of the winding wheel (10) is fixedly arranged on a driven sprocket (16); the two driven sprockets (16) are connected to a driving sprocket (18) through a chain (17); the bottom end of the driving sprocket (18) is rotatably arranged on the top of the mixing box (1) through a ball bearing.

6. A printing material stirring device according to claim 5, characterized in that: The middle position of the driving sprocket (18) is set as a hollow structure, and a plurality of mounting seats (19) are evenly spaced on the inner wall of the driving sprocket (18), and a limiting rod (20) is hingedly arranged on each of the mounting seats (19). A support plate (21) is fixedly arranged on the output shaft of the servo motor (2) on the inner side of the driving sprocket (18), and a plurality of limiting seats (22) are evenly spaced on the outer wall of the support plate (21), and a limiting hole (23) is arranged on each of the limiting seats (22).

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