Raw material conveying mechanism for 3D printer

Abstract

The invention belongs to the technical field of 3D printing, and particularly relates to a raw material conveying mechanism for a 3D printer, which comprises a bottom plate, a bracket II is fixedly connected to one side of the upper end surface of the bottom plate, a discharging hopper is fixedly connected to the upper end of the bracket II, a bracket I is fixedly connected to one side of the upper end surface of the bottom plate, and a conveying bin is fixedly connected to the upper end of the bracket I; a discharging opening in the bottom of the discharging hopper communicates with one side of the conveying bin, and spiral conveying rods are rotationally arranged at the two ends of an inner cavity of the conveying bin. The raw material diffusion assembly, the material pushing cloth and the pushing plate are matched with one another to form a rectangle with the continuously-enlarged area, every time raw materials are added into the barrel, the material pushing cloth and the pushing plate can push the raw materials in the center area of the barrel to the periphery, the raw materials are dispersed, and the raw materials can be uniformly dispersed under the auxiliary action of external force. And the raw materials are uniformly distributed in the barrel, so that the storage space of the barrel is reasonably utilized.

Description

Technical Field

[0001] The present invention belongs to the technical field of 3D printing, and in particular to a raw material conveying mechanism for a 3D printer. Background Art

[0002] A 3D printer is an additive manufacturing device that creates three-dimensional objects by depositing materials layer by layer. Its core principle is to transform digital models into physical objects. The raw materials used in 3D printers include powdered metal or plastic. These raw materials need to be transported from one area to another in the production line to ensure continuous production.

[0003] Patent publication number CN214877874U discloses a raw material conveying mechanism for a 3D printer, comprising a conveying bin, a support column fixedly connected to the bottom of the conveying bin, a spiral conveying rod movably connected to the inner side wall of the conveying bin, a servo motor fixedly mounted on the left side of the conveying bin, a feed inlet at the top of the conveying bin, a discharge outlet at the bottom of the conveying bin, a fixed column fixedly connected to the top of the conveying bin, a conveying channel provided at the top of the conveying bin, and a lower hopper fixedly connected to the top of the conveying channel. The raw material conveying mechanism for a 3D printer facilitates the conveying of raw materials and makes the output of raw materials more uniform through the interaction between the spiral conveying rod, servo motor, conveying channel, empty slot, bottom plate, damping spring, movable slot, sealing sleeve, and vibration motor, thereby improving the conveying efficiency of the device and the printing quality of the 3D printer.

[0004] However, the above technical solution still has the following deficiencies in practical application:

[0005] Raw materials are placed into the conveying bin through a lower hopper, and then the spiral conveyor rod is driven to rotate, causing the raw materials to move in the conveying bin and be discharged from the discharge port, thereby realizing the conveying of raw materials. However, in some cases, after the raw materials are discharged from the discharge port, they need to be stored in barrels. When the raw materials fall into the barrels, they will form a pile in a part of the barrel. Due to the poor fluidity of some raw materials, the piled raw materials are not easy to collapse to the surrounding areas, resulting in the storage space of the barrel not being properly utilized. As a result, the raw materials may overflow from the barrel mouth before the barrel is full, affecting the storage effect of the raw materials. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art and solve at least one technical problem raised in the background art, the present invention proposes a raw material conveying mechanism for a 3D printer.

[0007] The technical solution adopted by the present invention to solve its technical problems is: a raw material conveying mechanism for a 3D printer, comprising a base plate, a bracket second is fixedly connected to one side of the upper end surface of the base plate, an upper end of the bracket second is fixedly connected to a lower hopper, a bracket first is fixedly connected to one side of the upper end surface of the base plate, an upper end of the bracket first is fixedly connected to a conveying bin, a discharge port at the bottom of the lower hopper is connected to one side of the conveying bin, spiral conveying rods are rotatably provided at both ends of the inner cavity of the conveying bin, one end of the conveying bin is connected to and fixedly connected to a discharge pipe, a telescopic tube is slidably connected to the inner cavity of the discharge pipe, and a raw material diffusion component is also provided on the telescopic tube;

[0008] The raw material diffusion component includes a mounting plate that is sleeved on the lower end of the telescopic tube and fixed thereto, and a plurality of connecting rods are distributed radially and rotatably provided on the upper end surface of the mounting plate, a connecting rod 2 is rotatably provided at one end of the connecting rod 1, and an adjusting rod is rotatably provided at one end of the connecting rod 2, the lower end of the adjusting rod is fixedly connected to a push plate, a sleeve is fixedly connected to one side of the push plate, a winding roller is rotatably provided at one end of the inner cavity of the sleeve, a pushing cloth is wound on the winding roller, a strip through hole is provided on one side of the sleeve for the pushing cloth to pass through, and the end of the pushing cloth is fixedly connected to one side of the adjacent push plate.

[0009] Preferably, one end of the conveying bin is fixedly connected to a motor 1, and the output end of the motor 1 is fixedly connected to one end of the spiral conveying rod.

[0010] Preferably, an electric push rod is fixedly connected to one side of the discharge pipe, and the piston end of the electric push rod is fixedly connected to one end of the telescopic tube.

[0011] Preferably, a gear ring is rotatably provided on the upper end surface of the mounting plate, and one end of the connecting rod is fixedly connected to a gear, and the gear is rotatably provided on the mounting plate, and the gear is meshed with the tooth block of the outer ring of the gear ring.

[0012] Preferably, a motor three is fixedly connected to one side of the lower end surface of the mounting plate, and an output end of the motor three is fixedly connected to one end of the connecting rod.

[0013] Preferably, one end of the inner cavity of the sleeve is fixedly connected to a motor five, and the output end of the motor five is fixedly connected to one end of the roller.

[0014] Preferably, the push plate is further provided with a length-adaptive auxiliary blanking component;

[0015] The length-adaptive auxiliary blanking assembly includes a slider slidably connected to one side of the push plate, winding wheels are rotatably provided at both ends of the slider, and the two winding wheels closest to each other on two adjacent push plates are jointly wound around the same scraping line, rotating rods are rotatably provided on both sides of the slider, and a pressure block is fixedly connected to one end of the rotating rod.

[0016] Preferably, a threaded rod is threadedly connected to one side of the slider, one end of the threaded rod is rotatably set on the adjusting rod, and the other end is rotatably set on the push plate, one side of the lower end of the adjusting rod is fixedly connected to motor four, and the output end of motor four is fixedly connected to one end of the threaded rod.

[0017] Preferably, motor six is fixedly connected to both sides of the upper end of the slider, and the output end of motor six is fixedly connected to the winding wheel. Motor seven is fixedly connected to both sides of the bottom of the slider, and the output end of motor seven is fixedly connected to one end of the rotating rod.

[0018] Preferably, a plurality of universal wheels are provided on the lower end surface of the base plate.

[0019] The beneficial effects of the present invention are as follows:

[0020] 1. The raw material conveying mechanism for a 3D printer described in the present invention utilizes a raw material diffusion component, wherein a push cloth and a push plate cooperate with each other to form a rectangle with an ever-expanding area. Whenever raw materials are added to a drum, the push cloth and the push plate push the raw materials in the central area of the drum toward the surrounding areas to disperse the raw materials. As raw materials are continuously added, the area of the rectangle and the height of the mounting plate are flexibly controlled each time, and the raw materials can be evenly distributed in the drum with the assistance of an external force, thereby making rational use of the storage space of the drum, avoiding the situation where the raw materials overflow from the drum mouth before the drum is fully filled with raw materials due to poor fluidity of the raw materials, and ensuring the smooth progress of the conveying work.

[0021] 2. The material conveying mechanism for a 3D printer described in the present invention utilizes a length-adaptive auxiliary blanking assembly. During the unwinding process of the pusher cloth, the scraping line between the two winding wheels is always stretched to adapt to the unwinding length of the pusher cloth. When the pusher cloth pushes the material to a specified position and is about to reset, the scraping line scrapes the material adhering to the surface of the pusher cloth, freeing it from the pusher cloth. The pusher cloth is then driven to reset and subsequent material pushing operations are performed. This effectively avoids the situation where the pusher cloth, when pushing the material, has some material adhering to its surface. When the pusher cloth resets, the material will follow the pusher cloth's movement, preventing the pushed material from reaching the predetermined position, thereby affecting the material dispersion effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below with reference to the accompanying drawings.

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the three-dimensional structure of the discharge pipe;

[0025] Figure 3It is a schematic diagram of the three-dimensional structure of the installation plate;

[0026] Figure 4 This is a schematic diagram of the three-dimensional structure of the material pusher;

[0027] Figure 5 yes Figure 4 A partial enlarged view of the middle part;

[0028] Figure 6 It is a schematic diagram of the three-dimensional structure of the push plate;

[0029] Figure 7 yes Figure 6 A partial enlarged view of point B in the middle;

[0030] Figure 8 It is a schematic diagram of the three-dimensional structure of the lower hopper.

[0031] In the figure: 1. Bottom plate; 2. Lower hopper; 3. Conveying bin; 4. Bracket 1; 5. Motor 1; 6. Discharge pipe; 7. Telescopic tube; 8. Electric push rod; 9. Mounting plate; 10. Connecting rod 1; 11. Connecting rod 2; 12. Adjusting rod; 13. Bracket 2; 14. Ring gear; 15. Gear; 16. Push plate; 17. Push cloth; 18. Threaded rod; 19. Sleeve; 20. Universal wheel; 21. Scraping line; 22. Motor 3; 23. Motor 4; 24. Motor 5; 25. Roller; 26. Slider; 27. Motor 6; 28. Winding wheel; 29. Motor 7; 30. Rotating rod; 31. Press block; 32. Screw conveying rod. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] Please refer to Figures 1-8 The present invention provides a technical solution: a raw material conveying mechanism for a 3D printer, comprising a base plate 1, a bracket 2 13 is fixedly connected to one side of the upper end surface of the base plate 1, a lower hopper 2 is fixedly connected to the upper end of the bracket 2 13, a bracket 1 4 is fixedly connected to one side of the upper end surface of the base plate 1, a conveying bin 3 is fixedly connected to the upper end of the bracket 1 4, a discharge port at the bottom of the lower hopper 2 is connected to one side of the conveying bin 3, spiral conveying rods 32 are rotatably provided at both ends of the inner cavity of the conveying bin 3, one end of the conveying bin 3 is connected and fixedly connected to a discharge pipe 6, a telescopic pipe 7 is slidably connected to the inner cavity of the discharge pipe 6, and a raw material diffusion component is also provided on the telescopic pipe 7;

[0034] The raw material diffusion component includes a mounting plate 9 which is sleeved on the lower end of the telescopic tube 7 and fixed thereto. A plurality of connecting rods 10 are radially distributed and rotatably provided on the upper end surface of the mounting plate 9. A connecting rod 2 11 is rotatably provided at one end of the connecting rod 10. An adjusting rod 12 is rotatably provided at one end of the connecting rod 2 11. A push plate 16 is fixedly connected to the lower end of the adjusting rod 12. A sleeve 19 is fixedly connected to one side of the push plate 16. A winding roller 25 is rotatably provided at one end of the inner cavity of the sleeve 19. A pushing cloth 17 is wound on the winding roller 25. A strip through hole is provided on one side of the sleeve 19 for the pushing cloth 17 to pass through. The end of the pushing cloth 17 is fixedly connected to one side of the adjacent push plate 16.

[0035] In this embodiment, Figures 1-4 、 Figure 6-Figure 8 As shown, one end of the conveying bin 3 is fixedly connected to a motor 5, and the output end of the motor 5 is fixedly connected to one end of the spiral conveying rod 32.

[0036] An electric push rod 8 is fixedly connected to one side of the discharge pipe 6 , and a piston end of the electric push rod 8 is fixedly connected to one end of the telescopic tube 7 .

[0037] A gear ring 14 is rotatably provided on the upper end surface of the mounting plate 9, and a gear 15 is fixedly connected to one end of the connecting rod 10. The gear 15 is rotatably provided on the mounting plate 9, and the gear 15 and the tooth blocks of the outer ring of the gear ring 14 are meshed with each other.

[0038] One side of the lower end surface of the mounting plate 9 is fixedly connected to a motor three 22, and the output end of the motor three 22 is fixedly connected to one end of the connecting rod one 10.

[0039] One end of the inner cavity of the sleeve 19 is fixedly connected to the motor 5 24 , and the output end of the motor 5 24 is fixedly connected to one end of the winding roller 25 .

[0040] Specifically, in the prior art, raw materials are placed into the conveying bin 3 through the lower hopper 2, and then the spiral conveying rod 32 is driven to rotate, causing the raw materials to move in the conveying bin 3 and be discharged from the discharge port, thereby achieving the conveying of the raw materials. However, in some cases, after the raw materials are discharged from the discharge port, they need to be stored in a barrel. When the raw materials fall into the barrel, they will form a pile in a part of the barrel. Since some raw materials have poor fluidity, the piled raw materials are not easy to collapse to the surrounding areas, resulting in the storage space of the barrel not being reasonably utilized. As a result, the raw materials may overflow from the barrel mouth before the barrel is fully filled, affecting the storage effect of the raw materials.

[0041] Therefore, in order to solve the above problems, when using this embodiment, the bottom plate 1 is placed in a suitable position, and then the raw materials to be transported are placed in the lower hopper 2, and the raw materials fall into the conveying bin 3 through the lower hopper 2, and then the motor 15 drives the spiral conveying rod 32 to rotate, so that the raw materials move along the conveying bin 3 to the discharge pipe 6, and then the raw materials are discharged to the designated location after passing through the discharge pipe 6 and the telescopic tube 7, thereby completing the transportation of the raw materials. When the raw materials need to be transported into the barrel, the barrel for storing the raw materials is placed on the ground below the discharge pipe 6, and the axis of the barrel coincides with the axis of the discharge pipe 6. The raw materials fall into the center area of the barrel after passing through the discharge pipe 6 and the telescopic tube 7. Then the electric push rod 8 drives the telescopic tube 7 to descend to a suitable position, so that the push plate 16 is inserted into the accumulated raw materials, and the push plate 16 in the initial state is located at the mouth of the telescopic tube 7. Then the motor 3 22 is used to drive the connecting rod 10 on one side to rotate, and the multiple connecting rods 10 and the connecting rod 2 11 can be rotated synchronously under the transmission of the ring gear 14 and multiple gears 15, and the multiple push plates 16 are away from the barrel axis at the same time. At this time, the motor 5 24 drives the winding roller 25 to rotate and unwind the pushing cloth 17, and the pushing cloth 17 and the pushing plate 16 cooperate with each other to form a rectangle with an ever-expanding area, which will push the raw materials in the central area of the barrel to the surrounding areas to disperse the raw materials. Then, as the raw materials are continuously added, the area of the rectangle and the height of the mounting plate 9 are flexibly controlled each time, and the raw materials can be evenly distributed in the barrel with the assistance of external force, so that the storage space of the barrel can be reasonably utilized, avoiding the situation where the raw materials have poor fluidity and accumulate in a part of the barrel, resulting in the raw materials overflowing from the barrel mouth before the barrel is full of raw materials.

[0042] In this embodiment, Figure 3-Figure 7 As shown, the push plate 16 is also provided with a length-adaptive auxiliary blanking component;

[0043] The length-adaptive auxiliary blanking assembly includes a slider 26 slidably connected to one side of the push plate 16, and winding wheels 28 are rotatably provided at both ends of the slider 26, and the two winding wheels 28 closest to each other on the two adjacent push plates 16 are jointly wound around the same scraping line 21, and rotating rods 30 are rotatably provided on both sides of the slider 26, and a pressure block 31 is fixedly connected to one end of the rotating rod 30.

[0044] One side of the slider 26 is threadedly connected to a threaded rod 18, one end of the threaded rod 18 is rotatably set on the adjusting rod 12, and the other end is rotatably set on the push plate 16. One side of the lower end of the adjusting rod 12 is fixedly connected to a motor four 23, and the output end of the motor four 23 is fixedly connected to one end of the threaded rod 18.

[0045] Both sides of the upper end of the slider 26 are fixedly connected to motor six 27, the output end of motor six 27 is fixedly connected to the winding wheel 28, and both sides of the bottom of the slider 26 are fixedly connected to motor seven 29, the output end of motor seven 29 is fixedly connected to one end of the rotating rod 30.

[0046] Specifically, in the above embodiment, although the pusher cloth 17 can be used to push the raw materials in the drum to evenly distribute them in the drum, since raw materials with poor fluidity usually have a certain degree of viscosity, some of the raw materials will inevitably adhere to the surface of the pusher cloth 17 when pushing the raw materials. When the pusher cloth 17 is reset, these raw materials will follow the pusher cloth 17 and move, preventing the pushed raw materials from reaching the predetermined position, thereby affecting the dispersion effect of the raw materials.

[0047] Therefore, in order to solve the above problem, in the present embodiment, when the pusher cloth 17 is in use, the motor 6 27 drives the winding wheel 28 to rotate so that the scraper line 21 between the two winding wheels 28 is always in a straight state to adapt to the unwinding length of the pusher cloth 17. When the pusher cloth 17 pushes the raw material to the specified position and is about to return to its original position, the push plate 16 is first stopped, and then the motor 7 29 is started to rotate the rotating rod 30. The pressure blocks 31 at the ends of the rotating rod 30 are used to squeeze the ends of the scraper line 21. At the same time, the scraper line 21 is appropriately unwound. Under the pressure of the pressure blocks 31, the unwound part of the scraper line 21 is tightly attached to the surface of the pusher cloth 17. Then, the motor 4 23 drives the threaded rod 18 to rotate, and the slider 26 moves downward along the surface of the pusher plate 16. At the same time, the scraper line 21 scrapes the raw material adhering to the surface of the pusher cloth 17 and separates it from the pusher cloth 17. Then, the pusher cloth 17 is driven to return to its original position and the subsequent pushing operation is performed. This effectively avoids the situation where, when the push cloth 17 pushes the raw materials, some of the raw materials adhere to its surface. When the push cloth 17 is reset, these raw materials will move with the push cloth 17, making the pushed raw materials unable to reach the predetermined position, thereby affecting the dispersion effect of the raw materials.

[0048] In this embodiment, Figure 1 As shown, a plurality of universal wheels 20 are provided on the lower end surface of the base plate 1 .

[0049] Specifically, the entire device can be moved using the universal wheels 20, making it easy to place it in a suitable position, which is more flexible and convenient.

[0050] Working principle: Place the bottom plate 1 in a suitable position, then put the raw materials to be transported into the lower hopper 2, the raw materials fall into the conveying bin 3 through the lower hopper 2, and then the motor 5 drives the spiral conveying rod 32 to rotate, so that the raw materials move along the conveying bin 3 to the discharge pipe 6, and then the raw materials are discharged to the designated location through the discharge pipe 6 and the telescopic tube 7, thereby completing the transportation of the raw materials. When the raw materials need to be transported into the barrel, the barrel for storing the raw materials is placed on the ground below the discharge pipe 6, and the axis of the barrel coincides with the axis of the discharge pipe 6. The raw materials fall into the center area of the barrel after passing through the discharge pipe 6 and the telescopic tube 7. Then the electric push rod 8 drives the telescopic tube 7 to descend to a suitable position, so that the push plate 16 is inserted into the accumulated raw materials, and the push plate 16 in the initial state is located at the mouth of the telescopic tube 7. Then the motor 3 22 is used to drive the connecting rod 10 on one side to rotate, and the multiple connecting rods 10 and the connecting rod 2 11 can be rotated synchronously under the transmission of the ring gear 14 and multiple gears 15, and the multiple push plates 16 are away from the barrel axis at the same time. At this time, motor five 24 drives the winding roller 25 to rotate, unwinding the push cloth 17. The push cloth 17 and the push plate 16 cooperate to form a rectangle with an ever-increasing area, which pushes the raw materials in the center area of the barrel to the surrounding areas, dispersing the raw materials. Then, as the raw materials are continuously added, the area of the rectangle changes each time and the height of the mounting plate 9 are flexibly controlled. With the assistance of external force, the raw materials can be evenly distributed in the barrel, thereby making rational use of the barrel's storage space and avoiding the situation where the raw materials, due to poor fluidity, accumulate in a part of the barrel, resulting in the raw materials overflowing from the barrel mouth before the barrel is fully filled. During the unwinding process of the push cloth 17, motor six 27 drives the winding wheel 28 to rotate, so that the scraping line 21 between the two winding wheels 28 is always in a straight state to accommodate the unwinding length of the push cloth 17. When the pusher cloth 17 pushes the raw material to the designated position and is about to reset, the push plate 16 is first stopped, and then the motor 7 29 is started to rotate the rotating rod 30, and the pressure block 31 at the end of the rotating rod 30 is used to squeeze the two ends of the scraper line 21. At the same time, the scraper line 21 is appropriately unwound, and under the pressure of the pressure block 31, the unwound part of the scraper line 21 is pressed against the surface of the pusher cloth 17. Then, the motor 4 23 drives the threaded rod 18 to rotate, and the slider 26 moves downward along the surface of the pusher plate 16. At the same time, the scraper line 21 scrapes the raw material adhering to the surface of the pusher cloth 17 and separates it from the pusher cloth 17. Then, the pusher cloth 17 is driven to reset and the subsequent pushing operation is performed. This effectively avoids the situation where the pusher cloth 17 pushes the raw material and some of the raw material adheres to its surface. When the pusher cloth 17 resets, these raw materials will follow the pusher cloth 17 and move, making the pushed raw material unable to reach the designated position, thereby affecting the dispersion effect of the raw materials. The entire device can be moved using the universal wheels 20, making it easy to place it at a suitable location, which is more flexible and convenient.

[0051] 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 foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A raw material conveying mechanism for a 3D printer, comprising a base plate (1), characterized in that: One side of the upper end surface of the bottom plate (1) is fixedly connected to a bracket 2 (13), the upper end of the bracket 2 (13) is fixedly connected to a lower hopper (2), one side of the upper end surface of the bottom plate (1) is fixedly connected to a bracket 1 (4), the upper end of the bracket 1 (4) is fixedly connected to a conveying bin (3), the bottom discharge port of the lower hopper (2) is connected to one side of the conveying bin (3), the inner cavity of the conveying bin (3) is rotatably provided with a spiral conveying rod (32), one end of the conveying bin (3) is connected and fixedly connected to a discharge pipe (6), the inner cavity of the discharge pipe (6) is slidably connected to a telescopic pipe (7), and the telescopic pipe (7) is also provided with a raw material diffusion component; The raw material diffusion component includes a mounting plate (9) which is sleeved on the lower end of the telescopic tube (7) and fixed thereto, and a plurality of connecting rods (10) are radially distributed and rotatably provided on the upper end surface of the mounting plate (9), one end of the connecting rod (10) is rotatably provided with a connecting rod (11), and one end of the connecting rod (11) is rotatably provided with an adjusting rod (12), and the lower end of the adjusting rod (12) is fixedly connected to a push plate (16), one side of the pushing plate (16) is fixedly connected to a sleeve (19), and one end of the inner cavity of the sleeve (19) is rotatably provided with a roller (25), and a pushing cloth (17) is wound around the roller (25), and one side of the sleeve (19) is provided with a strip-shaped through hole for the pushing cloth (17) to pass through, and the end of the pushing cloth (17) is fixedly connected to one side of the adjacent pushing plate (16).

2. The raw material conveying mechanism for a 3D printer according to claim 1, characterized in that: One end of the conveying bin (3) is fixedly connected to a motor 1 (5), and the output end of the motor 1 (5) is fixedly connected to one end of a spiral conveying rod (32).

3. The raw material conveying mechanism for a 3D printer according to claim 1, characterized in that: One side of the discharge pipe (6) is fixedly connected to an electric push rod (8), and the piston end of the electric push rod (8) is fixedly connected to one end of the telescopic tube (7).

4. The raw material conveying mechanism for a 3D printer according to claim 1, characterized in that: A gear ring (14) is rotatably provided on the upper end surface of the mounting plate (9), and a gear (15) is fixedly connected to one end of the connecting rod (10). The gear (15) is rotatably provided on the mounting plate (9), and the gear (15) and the tooth block on the outer ring of the gear ring (14) are meshed with each other.

5. The raw material conveying mechanism for a 3D printer according to claim 4, characterized in that: One side of the lower end surface of the mounting plate (9) is fixedly connected to a motor three (22), and the output end of the motor three (22) is fixedly connected to one end of the connecting rod one (10).

6. The raw material conveying mechanism for a 3D printer according to claim 1, characterized in that: One end of the inner cavity of the sleeve (19) is fixedly connected to a motor five (24), and the output end of the motor five (24) is fixedly connected to one end of the roller (25).

7. The raw material conveying mechanism for a 3D printer according to claim 1, characterized in that: The push plate (16) is also provided with a length-adaptive auxiliary blanking component; The length-adaptive auxiliary blanking assembly includes a slider (26) slidably connected to one side of the push plate (16), winding wheels (28) are rotatably provided at both ends of the slider (26), and the two winding wheels (28) closest to each other on two adjacent push plates (16) are jointly wound around a same scraping line (21), and rotating rods (30) are rotatably provided on both sides of the slider (26), and a pressure block (31) is fixedly connected to one end of the rotating rod (30).

8. The raw material conveying mechanism for a 3D printer according to claim 7, characterized in that: One side of the slider (26) is threadedly connected to a threaded rod (18), one end of the threaded rod (18) is rotatably set on the adjustment rod (12), and the other end is rotatably set on the push plate (16), one side of the lower end of the adjustment rod (12) is fixedly connected to a motor four (23), and the output end of the motor four (23) is fixedly connected to one end of the threaded rod (18).

9. The raw material conveying mechanism for a 3D printer according to claim 7, characterized in that: Both sides of the upper end of the slider (26) are fixedly connected to a motor six (27), and the output end of the motor six (27) is fixedly connected to the winding wheel (28). Both sides of the bottom of the slider (26) are fixedly connected to a motor seven (29), and the output end of the motor seven (29) is fixedly connected to one end of the rotating rod (30).

10. The raw material conveying mechanism for a 3D printer according to claim 1, characterized in that: The lower end surface of the base plate (1) is provided with a plurality of universal wheels (20).

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