A raw material conveying mechanism for a 3D printer

Abstract

The application 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 support two fixedly connected to one side of the upper end face of the bottom plate, a feeding hopper fixedly connected to the upper end of the support two, a support one fixedly connected to one side of the upper end face of the bottom plate, a conveying bin fixedly connected to the upper end of the support one, a discharge opening at the bottom of the feeding hopper in communication with one side of the conveying bin, and a spiral conveying rod rotatably arranged in the inner cavity of the conveying bin. The raw material diffusion assembly, the pushing cloth and the pushing plate are cooperated to form a rectangle with an area continuously expanding. Whenever raw materials are added into the barrel, the pushing cloth and the pushing plate will push the raw materials in the central region of the barrel to the periphery, so that the raw materials are dispersed, and under the action of external force, the raw materials are uniformly distributed in the barrel, so that the storage space of the barrel can be reasonably utilized.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of 3D printing, and particularly relates to a raw material conveying mechanism for a 3D printer. BACKGROUND

[0002] A 3D printer is an additive manufacturing device for manufacturing a three-dimensional entity through layer-by-layer accumulation of materials, and the core principle thereof is to convert a digital model into a physical object. Raw materials for the 3D printer include powder metal or plastic raw materials, which need to be conveyed from one area to another in a production line to ensure continuous production.

[0003] The patent with the publication number CN214877874U discloses a raw material conveying mechanism for a 3D printer, which comprises 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 installed on the left side of the conveying bin, an inlet opening formed in the top of the conveying bin, an outlet opening formed in the bottom of the conveying bin, a fixed column fixedly connected to the top of the conveying bin, a conveying channel arranged on the top of the conveying bin, and a discharge hopper fixedly connected to the top of the conveying channel. The raw material conveying mechanism for the 3D printer facilitates the conveying of raw materials and makes the output of raw materials more uniform, 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 actual application:

[0005] The raw materials are put into the conveying bin through the discharge hopper, and then the spiral conveying rod is driven to rotate, so that the raw materials move in the conveying bin and are discharged from the outlet opening, thereby realizing the conveying work of the raw materials. However, in some cases, after the raw materials are discharged from the outlet opening, a barrel is used to store the raw materials, and when the raw materials fall into the barrel, the raw materials will form a pile in a local part of the barrel. Since part of the raw materials has poor fluidity, the piled raw materials are not easy to collapse to the surrounding, so that the storage space of the barrel cannot be reasonably utilized, and the raw materials overflow from the barrel opening before the barrel is filled with the raw materials, thereby affecting the storage effect of the raw materials. SUMMARY

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

[0007] The technical scheme adopted by the present application to solve its technical problems is: a raw material conveying mechanism for a 3D printer, comprising a bottom plate, a support two is fixedly connected to one side of the upper end face of the bottom plate, a feeding hopper is fixedly connected to the upper end of the support two, a support one is fixedly connected to one side of the upper end face of the bottom plate, a conveying bin is fixedly connected to the upper end of the support one, the bottom outlet of the feeding hopper is communicated with one side of the conveying bin, a spiral conveying rod is rotatably arranged in the inner cavity of the conveying bin at both ends, a discharge pipe is communicated and fixedly connected to one end of the conveying bin, a telescopic pipe is slidably connected in the inner cavity of the discharge pipe, and a raw material diffusion assembly is further arranged on the telescopic pipe;

[0008] The raw material diffusion assembly comprises a mounting disc sleeved on the lower end of the telescopic pipe and fixedly connected thereto, a plurality of connecting rods one are radially distributed and rotatably arranged on the upper end face of the mounting disc, a connecting rod two is rotatably arranged at one end of the connecting rod one, an adjusting rod is rotatably arranged at one end of the connecting rod two, a push plate is fixedly connected to the lower end of the adjusting rod, a sleeve is fixedly connected to one side of the push plate, a winding roller is rotatably arranged in the inner cavity of the sleeve at one end, a pushing cloth is woundly arranged on the winding roller, a strip-shaped through hole is arranged on one side of the sleeve for the pushing cloth to pass through, and the end of the pushing cloth is fixedly connected to the side of the adjacent push plate.

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

[0011] Preferably, a gear ring is rotatably arranged on the upper end face of the mounting disc, a gear is fixedly connected to one end of the connecting rod one, the gear is rotatably arranged on the mounting disc, and the gear and the tooth block of the outer ring of the gear ring are meshed with each other.

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

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

[0014] Preferably, a length-adapting type auxiliary blanking assembly is further arranged on the push plate.

[0015] The length-adapting type auxiliary blanking assembly comprises a sliding block slidably connected to one side of the push plate, winding wheels are rotatably arranged at both ends of the sliding block, and the closest two winding wheels on the adjacent two push plates are commonly wound with the same scraping wire, rotating rods are rotatably arranged on both sides of the sliding block, and a pressing block is fixedly connected to one end of the rotating rod.

[0016] Preferably, one side of the sliding block is threadedly connected with a threaded rod, one end of the threaded rod is rotationally arranged on an adjusting rod, the other end is rotationally arranged on a push plate, one side of the lower end of the adjusting rod is fixedly connected with a fourth motor, and the output end of the fourth motor is fixedly connected with one end of the threaded rod.

[0017] Preferably, both sides of the upper end of the sliding block are fixedly connected with a sixth motor, the output end of the sixth motor is fixedly connected with a winding wheel, both sides of the bottom of the sliding block are fixedly connected with a seventh motor, and the output end of the seventh motor is fixedly connected with one end of a rotating rod.

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

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

[0020] 1. The raw material conveying mechanism for the 3D printer, which utilizes the raw material diffusion assembly, the pushing cloth and the push plate cooperatively form a rectangle with an area continuously expanding, whenever raw materials are added into the barrel, the pushing cloth and the push plate will push the raw materials in the central area of the barrel to the periphery, so that the raw materials are dispersed, with the continuous addition of raw materials, the area of the rectangle and the height of the mounting disc are flexibly controlled each time, under the action of external force, the raw materials are uniformly distributed in the barrel, so that the storage space of the barrel is reasonably utilized, the situation that the raw materials overflow from the barrel opening due to poor flowability of the raw materials before the barrel is filled with raw materials is avoided, and the smooth conveying work is ensured.

[0021] 2. The raw material conveying mechanism for the 3D printer, which utilizes the length-adaptive auxiliary material falling assembly, the scraping line between the two winding wheels is always in a straightened state during the unwinding process of the pushing cloth, so as to adapt to the unwinding length of the pushing cloth, when the pushing cloth pushes the raw materials to the specified position and is about to reset, the scraping line scrapes the raw materials adhered to the surface of the pushing cloth, so that the raw materials are separated from the pushing cloth, and then the pushing cloth is driven to reset and perform subsequent pushing operation, so that the situation that the raw materials adhere to the surface of the pushing cloth when the pushing cloth pushes the raw materials, and then the raw materials move with the pushing cloth when the pushing cloth resets, so that the pushed raw materials cannot reach the predetermined position, and then affect the dispersion effect of the raw materials, is effectively avoided. BRIEF DESCRIPTION OF DRAWINGS

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

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

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

[0025] Figure 3is the schematic diagram of the stereoscopic structure at the installation disc;

[0026] Figure 4 is the schematic diagram of the stereoscopic structure at the pushing cloth;

[0027] Figure 5 is Figure 4 is the partial enlarged view at A in the middle;

[0028] Figure 6 is the schematic diagram of the stereoscopic structure at the pushing plate;

[0029] Figure 7 is Figure 6 is the partial enlarged view at B in the middle;

[0030] Figure 8 is the schematic diagram of the stereoscopic structure at the lower hopper.

[0031] In the figure: 1, bottom plate; 2, lower hopper; 3, conveying bin; 4, support one; 5, motor one; 6, discharge pipe; 7, telescopic pipe; 8, electric push rod; 9, installation disc; 10, connecting rod one; 11, connecting rod two; 12, adjusting rod; 13, support two; 14, gear ring; 15, gear; 16, pushing plate; 17, pushing cloth; 18, threaded rod; 19, sleeve; 20, universal wheel; 21, material scraping line; 22, motor three; 23, motor four; 24, motor five; 25, winding roller; 26, sliding block; 27, motor six; 28, winding wheel; 29, motor seven; 30, rotating rod; 31, pressing block; 32, screw conveying rod. DETAILED DESCRIPTION

[0032] The technical solutions of the present application will be described clearly and completely below in combination with the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0033] Please refer to Figures 1-8 The present application provides a technical solution: a raw material conveying mechanism for a 3D printer, comprising a bottom plate 1, a support two 13 is fixedly connected to one side of the upper end face of the bottom plate 1, a lower hopper 2 is fixedly connected to the upper end of the support two 13, a support one 4 is fixedly connected to one side of the upper end face of the bottom plate 1, a conveying bin 3 is fixedly connected to the upper end of the support one 4, a discharge opening at the bottom of the lower hopper 2 is in communication with one side of the conveying bin 3, a screw conveying rod 32 is rotatably arranged in the inner cavity of the conveying bin 3 at both ends, a discharge pipe 6 is connected and fixed to one end of the conveying bin 3, a telescopic pipe 7 is slidably connected in the inner cavity of the discharge pipe 6, and a raw material diffusion assembly is further arranged on the telescopic pipe 7;

[0034] The raw material diffusion assembly comprises a mounting disc 9 sleeved at the lower end of the telescopic pipe 7 and fixedly connected with the telescopic pipe 7, a plurality of connecting rods I 10 are distributed in the radial direction and rotatably arranged on the upper end surface of the mounting disc 9, one end of each connecting rod I 10 is rotatably provided with a connecting rod II 11, one end of the connecting rod II 11 is rotatably provided with an adjusting rod 12, the lower end of the adjusting rod 12 is fixedly connected with a push plate 16, one side of the push plate 16 is fixedly connected with a sleeve 19, a winding roller 25 is rotatably arranged in the inner cavity of the sleeve 19, a pushing cloth 17 is wound on the winding roller 25, and a strip-shaped through hole is arranged on one side of the sleeve 19, so that the pushing cloth 17 can pass through the strip-shaped through hole, and the end of the pushing cloth 17 is fixedly connected with the side of the adjacent push plate 16.

[0035] As shown in the embodiment, Figures 1-4 、 As shown in the embodiment, Figures 6-8 One end of the telescopic pipe 7 is fixedly connected with the push plate 16, and the other end of the telescopic pipe 7 is fixedly connected with the push plate 16.

[0036] The telescopic pipe 7 is fixedly connected with the push plate 16, and the other end of the telescopic pipe 7 is fixedly connected with the push plate 16.

[0037] The mounting disc 9 is rotatably provided with a gear ring 14, one end of the connecting rod I 10 is fixedly connected with a gear 15, the gear 15 is rotatably arranged on the mounting disc 9, and the gear 15 is meshed with the tooth blocks of the outer ring of the gear ring 14.

[0038] One end of the connecting rod I 10 is fixedly connected with the gear 15, and the other end of the connecting rod I 10 is fixedly connected with the gear 15.

[0039] The inner cavity of the sleeve 19 is fixedly connected with a motor V 24, and the output end of the motor V 24 is fixedly connected with one end of the winding roller 25.

[0040] Specifically, in the prior art, the raw materials are put into the conveying bin 3 through the discharge hopper 2, and then the screw conveying rod 32 is driven to rotate, so that the raw materials move in the conveying bin 3 and are discharged from the discharge port, thereby realizing the conveying work of the raw materials. However, in some cases, after the raw materials are discharged from the discharge port, a barrel is used to store the raw materials, and when the raw materials fall into the barrel, the raw materials will form a pile in a part of the barrel. Since part of the raw materials has poor fluidity, the piled raw materials are not easy to collapse to the surrounding, so that the storage space of the barrel cannot be reasonably utilized, and the raw materials overflow from the barrel opening before the barrel is filled with the raw materials, thereby affecting the storage effect of the raw materials.

[0041] Therefore, in order to solve the above problems, in use, the bottom plate 1 is placed in a suitable position, and then the raw material to be conveyed is placed in the hopper 2, the raw material falls into the conveying bin 3 through the hopper 2, and then the motor 5 drives the spiral conveying rod 32 to rotate, so that the raw material moves along the conveying bin 3 to the discharge pipe 6, and then the raw material is discharged to the designated place through the discharge pipe 6 and the telescopic pipe 7, thereby completing the conveying of the raw material. When the raw material needs to be conveyed into a barrel, the barrel for storing the raw material is placed on the ground below the discharge pipe 6, and the barrel axis is coaxial with the discharge pipe 6 axis, and the raw material falls into the central area of the barrel through the discharge pipe 6 and the telescopic pipe 7, and then the electric push rod 8 drives the telescopic pipe 7 to descend to a suitable position, so that the push plate 16 is inserted into the accumulated raw material, and the push plate 16 in the initial state is located at the pipe opening of the telescopic pipe 7, and then the motor three 22 drives the connecting rod one 10 on one side to rotate, so that the multiple connecting rod ones 10 and the connecting rod two 11 are synchronously rotated under the transmission of the gear ring 14 and the multiple gears 15, and the multiple push plates 16 simultaneously move away from the barrel axis, and at the same time, the motor five 24 drives the winding roller 25 to rotate, and the pushing cloth 17 is unwound, so that the pushing cloth 17 and the push plate 16 cooperate to form a rectangle with an area that continuously expands, so that the raw material in the central area of the barrel is pushed to the surrounding, so that the raw material is dispersed, and then by flexibly controlling the area of the rectangle and the height of the mounting disc 9 each time as the raw material is continuously added, the raw material is uniformly distributed in the barrel under the action of external force, thereby the storage space of the barrel is reasonably utilized, and the situation that the raw material flows poorly, accumulates in the local barrel, and then overflows from the barrel opening before the barrel is filled with the raw material is avoided.

[0042] In the embodiment, as shown in Figures 3-7 The push plate 16 is further provided with a length-adaptive auxiliary discharging assembly;

[0043] The length-adaptive auxiliary discharging assembly comprises a sliding block 26 slidingly connected to one side of the push plate 16, two winding wheels 28 rotatably arranged at two ends of the sliding block 26, one same material scraping wire 21 commonly wound around the two closest winding wheels 28 on the adjacent two push plates 16, a rotating rod 30 rotatably arranged at two sides of the sliding block 26, and a pressing block 31 fixedly connected to one end of the rotating rod 30.

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

[0045] The upper ends of the two sides of the sliding block 26 are fixedly connected with a motor six 27, the output end of the motor six 27 is fixedly connected with the winding wheel 28, the bottom of the sliding block 26 is fixedly connected with a motor seven 29 at the two sides, and the output end of the motor seven 29 is fixedly connected with one end of the rotating rod 30.

[0046] Specifically, in the above embodiment, although the raw materials in the barrel can be pushed by the pushing cloth 17 to make them evenly distributed in the barrel. However, since the raw materials with poor fluidity also have certain viscosity, when the pushing cloth 17 pushes the raw materials, some raw materials will inevitably adhere to the surface of the pushing cloth 17, and when the pushing cloth 17 resets, these raw materials will move with the pushing cloth 17, so that the pushed raw materials cannot reach the predetermined position, thereby affecting the dispersion effect of the raw materials.

[0047] Therefore, in order to solve the above problems, in use, the pushing cloth 17 is unwound, the 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 adapt to the unwinding length of the pushing cloth 17. When the pushing cloth 17 pushes the raw materials to the designated position and is about to reset, first drive the pushing plate 16 to stop moving, then start the motor seven 29, rotate the rod 30, use the pressing block 31 at the end of the rotating rod 30 to extrude both ends of the scraping line 21, and at the same time, appropriately unwind the scraping line 21. Under the extrusion of the pressing block 31, the unwound part of the scraping line 21 is tightly attached to the surface of the pushing cloth 17, then use the motor four 23 to drive the threaded rod 18 to rotate, then the sliding block 26 moves downward along the surface of the pushing plate 16, at the same time, the scraping line 21 scrapes the raw materials adhered to the surface of the pushing cloth 17 to make it separate from the pushing cloth 17, then drive the pushing cloth 17 to reset and perform subsequent pushing operation. Thus, the situation that when the pushing cloth 17 pushes the raw materials, some raw materials adhere to the surface of the pushing cloth 17, and when the pushing cloth 17 resets, these raw materials move with the pushing cloth 17, so that the pushed raw materials cannot reach the predetermined position, thereby affecting the dispersion effect of the raw materials, is effectively avoided.

[0048] In the embodiment, as shown in the figure, a plurality of universal wheels 20 are arranged on the lower end surface of the bottom plate 1. Figure 1

[0049] Specifically, the universal wheels 20 can be used to move the entire device, which is convenient and flexible.

[0050] ​Working principle: the base plate 1 is placed in the appropriate position, and then the raw material to be transported is put into the hopper 2, the raw material falls into the conveying bin 3 through the hopper 2, and then the motor 5 drives the screw conveying rod 32 to rotate, so that the raw material moves along the conveying bin 3 to the discharge pipe 6, and then the raw material is discharged to the designated place through the discharge pipe 6 and the telescopic pipe 7, thereby completing the conveying of the raw material. When the raw material needs to be conveyed into a barrel, the barrel used for storing the raw material is placed on the ground below the discharge pipe 6, and the barrel axis coincides with the discharge pipe 6 axis, and the raw material falls into the central area of the barrel through the discharge pipe 6 and the telescopic pipe 7, and then the electric push rod 8 drives the telescopic pipe 7 to descend to the appropriate position, so that the push plate 16 is inserted into the accumulated raw material, and the push plate 16 in the initial state is located at the mouth of the telescopic pipe 7, then the motor three 22 drives the connecting rod one 10 on one side to rotate, that is, the multiple connecting rods one 10 and the connecting rod two 11 are synchronously rotated under the transmission of the gear ring 14 and the multiple gears 15, and the multiple push plates 16 simultaneously move away from the barrel axis, at the same time, the motor five 24 drives the winding roller 25 to rotate, and the pushing cloth 17 is unwound, so that the pushing cloth 17 and the push plate 16 cooperate to form a rectangle with an area that continuously expands, so that the raw material in the central area of the barrel is pushed to the surrounding, and the raw material is dispersed, then by flexibly controlling the area of the rectangle and the height of the mounting disc 9 each time, the raw material is uniformly distributed in the barrel under the action of external force, thereby the storage space of the barrel is reasonably utilized, and the situation that the raw material flows poorly, accumulates in the local barrel, and then overflows from the barrel opening before the barrel is filled with raw material is avoided. During the unwinding process of the pushing cloth 17, the 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 adapt to the unwinding length of the pushing cloth 17. When the pushing cloth 17 pushes the raw material to the designated position and is about to reset, the push plate 16 is first driven to stop moving, and then the motor seven 29 is started, the rotating rod 30 is rotated, the pressing block 31 at the end of the rotating rod 30 extrudes the two ends of the scraping line 21, and at the same time, the scraping line 21 is appropriately unwound, so that under the extrusion of the pressing block 31, the unwound part of the scraping line 21 is tightly attached to the surface of the pushing cloth 17, and then the motor four 23 drives the threaded rod 18 to rotate, so that the sliding block 26 moves downward along the surface of the push plate 16, at the same time, the scraping line 21 scrapes the raw material adhered to the surface of the pushing cloth 17, so that it is separated from the pushing cloth 17, and then the pushing cloth 17 is reset for subsequent pushing operation. Thus, the situation that the pushing cloth 17 moves with the raw material adhered to its surface when it resets, and the pushed raw material cannot reach the predetermined position, thereby affecting the dispersion effect of the raw material, is effectively avoided. The universal wheel 20 can move the entire device, which is convenient and flexible.

[0051] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application 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: A bracket two (13) is fixedly connected to one side of the upper end of the base plate (1). A hopper (2) is fixedly connected to the upper end of the bracket two (13). A bracket one (4) is fixedly connected to one side of the upper end of the base plate (1). A conveying chamber (3) is fixedly connected to the upper end of the bracket one (4). The bottom outlet of the hopper (2) is connected to one side of the conveying chamber (3). A spiral conveying rod (32) is rotatably installed at both ends of the inner cavity of the conveying chamber (3). A discharge pipe (6) is connected and fixedly connected to one end of the conveying chamber (3). A telescopic pipe (7) is slidably connected to the inner cavity of the discharge pipe (6). A raw material diffusion component is also installed on the telescopic pipe (7). The raw material diffusion assembly includes an installation plate (9) sleeved on and fixed to the lower end of the telescopic tube (7). Multiple connecting rods (10) are radially distributed and rotatably arranged on the upper surface of the installation plate (9). A connecting rod (11) is rotatably arranged at one end of the connecting rod (10). An adjusting rod (12) is rotatably arranged at one end of the connecting rod (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 roller (25) is rotatably arranged at one end of the inner cavity of the sleeve (19). A pushing cloth (17) is wound on the roller (25). A strip-shaped 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).

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 (5), and the output end of the motor (5) is fixedly connected to one end of the spiral conveying rod (32).

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

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

5. The raw material conveying mechanism for a 3D printer according to claim 4, characterized in that: The mounting plate (9) is fixedly connected to one side of the lower end face of the 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 (24), and the output end of the motor (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 feeding component; The length-adaptive auxiliary feeding assembly includes a slider (26) slidably connected to one side of the push plate (16). Both ends of the slider (26) are rotatably equipped with winding wheels (28), and the two winding wheels (28) closest to each other on the two adjacent push plates (16) are wound with the same scraping line (21). Both sides of the slider (26) are rotatably equipped with rotating rods (30), and one end of the rotating rod (30) is fixedly connected to a pressure block (31).

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

9. A raw material conveying mechanism for a 3D printer according to claim 7, characterized in that: Motor 6 (27) is fixedly connected to both sides of the upper end of the slider (26). The output end of motor 6 (27) is fixedly connected to the winding wheel (28). Motor 7 (29) is fixedly connected to both sides of the bottom of the slider (26). The output end of motor 7 (29) is fixedly connected to one end of the rotating rod (30).

10. A raw material conveying mechanism for a 3D printer according to claim 1, characterized in that: The bottom surface of the base plate (1) is provided with multiple casters (20).

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