CN112810153A

CN112810153A - 3D prints and uses raw materials conveyor

Info

Publication number: CN112810153A
Application number: CN202110080693.XA
Authority: CN
Inventors: 张文义; 王玲钰
Original assignee: Wuhu Aisandi Electronic Technology Co ltd
Current assignee: Wuhu Aisandi Electronic Technology Co ltd
Priority date: 2021-01-21
Filing date: 2021-01-21
Publication date: 2021-05-18
Anticipated expiration: 2041-01-21

Abstract

The invention relates to the technical field of 3D printing, in particular to a raw material conveying device for 3D printing, which comprises a hopper, a box body, a discharging assembly, a feeding assembly, a conveying platform and a rolling assembly, wherein the hopper is arranged on the box body; the hopper is fixedly arranged on the box body; the conveying platform is fixedly arranged in the box body; the discharging assembly is rotatably arranged in the hopper and is positioned above one end of the conveying platform; the conveying platform comprises a conveying flat plate; the feeding assembly comprises a second baffle plate and a scraper plate; two groups of second baffles are respectively and fixedly arranged at two ends of the scraper, and the two groups of second baffles are symmetrically arranged in parallel; an accommodating cavity is formed between the two groups of second baffles and the scraper; through the feeding assembly, intermittent feeding and feeding of raw materials can be achieved, feeding of the raw materials is smooth, and printing quality is improved.

Description

3D prints and uses raw materials conveyor

Technical Field

The invention belongs to the technical field of 3D printing, and particularly relates to a raw material conveying device for 3D printing.

Background

In the 3D printing process, the raw materials are conveyed to the 3D printer through the conveying mechanism, and the object is constructed in a mode that the raw materials are accumulated layer by layer according to the compiled model. When the material is insufficient, the printing needs to be manually suspended, and the printing work is restarted after the raw material is replaced.

And when the printing product is replaced, a new raw material needs to be replaced, and at the moment, the raw material in the conveying mechanism needs to be cleaned, and then the new raw material is added again to perform the printing work. The existing conveying mechanism is complex in structure, time and labor are wasted when raw materials are replaced, raw materials are easy to accumulate due to continuous addition in the conveying process, conveying of the raw materials is unsmooth in the conveying process, and the quality of 3D printed products is affected.

Disclosure of Invention

Aiming at the problems, the invention provides a raw material conveying device for 3D printing, which comprises a hopper, a box body, a discharging assembly, a feeding assembly, a conveying platform, a rolling assembly and a base, wherein the hopper is arranged on the box body;

the conveying platform is fixedly arranged in the box body; the box body is fixedly arranged on the base, and the hopper is fixedly arranged on the box body and communicated with the box body; the discharging assembly is rotatably arranged in the hopper and is positioned above one end of the conveying platform;

the feeding assembly comprises a second baffle plate and a scraper plate; the two groups of second baffles are symmetrically arranged at two ends of the scraper in parallel; an accommodating cavity is formed between the two groups of second baffles and the scraper;

the upper surface of the second baffle is provided with a rack;

the discharging assembly is provided with a transmission gear, and the transmission gear is in meshing transmission with a plurality of groups of racks;

the conveying platform comprises a conveying flat plate;

the lower end of the scraper is attached to the upper plate surface of the conveying flat plate and can move along the length direction of the conveying flat plate;

a through groove is formed in one end, far away from the material discharging assembly, of the conveying flat plate; a sieve plate is fixedly arranged at the bottom of the through groove;

the rolling component is slidably mounted on the through groove, is positioned above the sieve plate, and is movably attached to the surface of the sieve plate at the lower end; the sliding direction of the rolling component is consistent with that of the feeding component.

Furthermore, first grooves are respectively formed in two sides of the upper plate surface of the conveying flat plate along the length direction, and the two groups of first grooves are symmetrically arranged in parallel; the two groups of second baffles are movably clamped in the two groups of first grooves respectively;

the inner wall of one group of first grooves is rotatably provided with a transmission screw rod, and the inner wall of the other group of first grooves is rotatably provided with a guide rod; the feeding assembly is in threaded connection with the transmission screw rod.

Further, a blanking plate is fixedly mounted on the lower plate surface of the conveying flat plate, and an included angle between the blanking plate and the lower plate surface of the conveying flat plate is set to be an acute angle;

the blanking plate is positioned right below the sieve plate, and the inclined surface of the blanking plate faces the through groove; the two sides of the blanking plate are respectively and fixedly provided with a third baffle;

the two groups of third baffle plates are arranged in parallel and symmetrically, and the upper ends of the two groups of third baffle plates are fixedly connected with the lower plate surface of the conveying flat plate; and a storage cavity is formed between the two groups of third baffles and the blanking plate.

Further, the inner walls of the two sides of the through groove are provided with third grooves; the through groove is communicated with the first groove through the third groove;

the rolling component comprises a rolling shaft and thread blocks, two ends of the rolling shaft respectively penetrate through two groups of third grooves to be fixedly connected with the two groups of thread blocks, and the rolling shaft is positioned above the sieve plate; the two groups of thread blocks are movably clamped in the first groove respectively;

second threaded holes are respectively formed in the two groups of threaded blocks; the second threaded hole is in threaded connection with the transmission screw rod; the rolling shaft is close to one side fixed mounting of sieve has the lug, the lug with the surface of sieve is laminated completely.

Further, a feed inlet is formed in the upper end of the box body, and the hopper is clamped and installed in the feed inlet; a discharge hole is formed in one side face of the box body, and the storage cavity is communicated with the discharge hole;

one side fixed mounting that the discharge gate was kept away from to the box has the motor, the output of motor pass through the shaft coupling with the transmission screw transmission is connected.

Furthermore, the discharge assembly also comprises a discharge cylinder and a transmission shaft;

the transmission shaft is fixedly arranged in the discharge cylinder, and two ends of the transmission shaft are rotatably arranged in the hopper; one end of the transmission shaft extends to the outer side of the hopper; the transmission gear is fixedly arranged at one end of the transmission shaft.

Further, the discharge cylinder comprises a first baffle, a rotary drum and a third baffle;

the rotary drum is fixedly arranged between the two groups of first baffle plates; the transmission shaft is fixedly sleeved in the rotary drum;

a plurality of groups of first clamping grooves are formed in the first baffle, a plurality of groups of second clamping grooves are formed in the outer circular surface of the rotary drum along the direction of the central axis, and one group of first clamping grooves corresponds to one group of second clamping grooves;

the length direction joint of third baffle is in the second draw-in groove, the width direction joint of third baffle is in the first draw-in groove, two sets of adjacent constitute the row material cavity between the third baffle.

Further, the hopper comprises a hopper shell, a first partition plate is fixedly mounted in the hopper shell, an inner cavity of the hopper shell is divided into a storage bin and a distribution bin through the first partition plate, and the distribution bin is positioned below the storage bin; the material distribution bin is fixedly clamped in a material inlet of the box body;

the discharging assembly is rotatably arranged in the material distributing bin;

the first partition plate is provided with a feeding hole, and the storage bin is communicated with the distribution bin through the feeding hole; the transmission shaft is rotatably arranged on the inner wall of the material distribution bin, and one end of the transmission shaft penetrates to the outer side of the material distribution bin;

the feeding assembly is positioned below the material distribution bin.

Furthermore, a third clamping groove is formed in the surface of the scraper, and the conveying flat plate is clamped on the third clamping groove; the upper plate surface of the conveying flat plate is completely attached to the upper top surface of the third clamping groove;

the lower ends of the two sides of the scraper are provided with a first threaded hole and a guide hole; the first threaded hole is in threaded connection with a transmission screw rod in the conveying flat plate; the guide hole is movably sleeved on a guide rod in the conveying flat plate.

Further, each group of the second baffles comprises a fourth baffle and a fifth baffle; the fourth baffle and the fifth baffle are both rectangular plates; the fourth baffle is fixedly arranged at one end of the fifth baffle;

the upper end surface of the fourth baffle is provided with a plurality of groups of racks; a plurality of groups of racks are in meshing transmission with the transmission gear; the scraper is fixedly installed at one end, far away from the fourth baffle, of the fifth baffle.

The invention has the beneficial effects that:

1. the invention is provided with a conveying platform and a feeding component, and the feeding component can slide on the conveying platform. Through the feeding assembly, intermittent feeding and feeding of raw materials can be achieved, feeding of the raw materials is smooth, and printing quality is improved.

2. The invention is provided with the discharging component, and the raw materials in the hopper can be conveyed in a component manner through the discharging component, so that a large amount of raw materials are prevented from being accumulated in the hopper in the conveying process, and the raw materials are ensured to fall smoothly.

3. The invention is provided with the rolling component, and the raw materials with caking in the raw materials can be rolled and dispersed by the rolling component for use, so that the problem of blockage in the printing process of the 3D printer caused by caking of the raw materials can be avoided.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.

FIG. 1 shows a schematic structural diagram of a delivery device according to an embodiment of the invention;

FIG. 2 shows a schematic cross-sectional view of a case according to an embodiment of the invention;

FIG. 3 shows a schematic cross-sectional view of a hopper according to an embodiment of the invention;

FIG. 4 shows a schematic structural diagram of a discharge assembly according to an embodiment of the invention;

FIG. 5 shows a schematic structural diagram of a take-off cylinder according to an embodiment of the invention;

FIG. 6 shows a schematic structural view of a feed assembly according to an embodiment of the invention;

FIG. 7 shows a schematic structural view of a second baffle according to an embodiment of the invention;

FIG. 8 shows a schematic structural diagram of a delivery platform according to an embodiment of the invention;

fig. 9 shows a schematic structural view of a crushing assembly according to an embodiment of the invention.

In the figure: 1. a hopper; 11. a hopper housing; 111. a storage bin; 112. a second separator; 12. a first separator; 121. a feed port; 13. a material distributing bin; 2. a box body; 21. a feed inlet; 22. a discharge port; 23. a waste material port; 24. a motor; 3. a discharge assembly; 31. a discharge cylinder; 311. a first baffle plate; 3111. a first card slot; 312. a rotating drum; 3121. a second card slot; 313. a third partition plate; 32. a drive shaft; 33. a transmission gear; 4. a feeding assembly; 41. a second baffle; 411. a fourth baffle; 412. a fifth baffle; 42. a squeegee; 43. a first threaded hole; 44. a guide hole; 45. a third card slot; 46. a rack; 47. an accommodating cavity; 5. a conveying platform; 51. conveying the flat plate; 52. a first groove; 53. a transmission screw rod; 54. a guide bar; 55. a through groove; 56. a third groove; 57. a sieve plate; 571. screening holes; 58. a blanking plate; 59. a third baffle plate; 6. rolling the component; 61. a thread block; 62. rolling the shaft; 63. a second threaded hole; 64. a bump; 7. a base.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The embodiment of the invention provides a raw material conveying device for 3D printing, which comprises a hopper 1, a box body 2, a discharging assembly 3, a feeding assembly 4, a conveying platform 5 and a base 7. Exemplarily, as shown in fig. 1, the box body 2 is fixedly installed on the base 7, and the hopper 1 is fixedly installed on the box body 2 and is communicated with the box body 2; the conveying platform 5 is fixedly arranged in the box body 2; the discharging assembly 3 is rotatably arranged in the hopper 1, and the discharging assembly 3 is positioned right above one end of the conveying platform 5; the feeding assembly 4 is slidably mounted on the conveying platform 5 and is positioned below the discharging assembly 3; the feeding assembly 4 can move along the length direction of the conveying platform 5.

Conveying platform 5 is kept away from the one end slidable mounting of discharge subassembly 3 has rolling subassembly 6, rolling subassembly 6 is in conveying platform 5 is last the moving direction with pay-off subassembly 4 is in conveying platform 5 is last the moving direction unanimous.

Raw materials add extremely in the hopper 1, through it can carry out the weight to the raw materials and carry to arrange material subassembly 3, warp the raw materials that the weight was carried of material subassembly falls into in the feeding subassembly 4, through feeding subassembly 4 can be followed the raw materials conveying platform 5 carries, it can roll the dispersion to having the raw materials of caking in the raw and other materials that lead to because of depositing the environment to roll subassembly 6, passes through after the dispersion conveying platform 5 carries and uses in the storage box in the 3D printer, avoids 3D to print the jam that the process leads to 3D printer nozzle because of the raw materials of caking.

Exemplarily, as shown in fig. 2, a feed port 21 is formed at the upper end of the box body 2, and the hopper 1 is installed in the feed port 21 in a clamping manner; a discharge port 22 is formed in one side face of the box body 2, the discharge port 22 is communicated with a storage box of the 3D printer, and the conveying platform 5 conveys the raw materials into the storage box of the 3D printer through the discharge port 22; the lower end of the box body 2 is provided with a waste material opening 23, and waste materials in the conveying device can be collected through the waste material opening 23.

The hopper 1 comprises a hopper shell 11, illustratively, as shown in fig. 3, a first partition plate 12 is fixedly installed in the hopper shell 11, an inner cavity of the hopper shell 11 is divided into a storage bin 111 and a distribution bin 13 by the first partition plate 12, and the distribution bin 13 is located below the storage bin 111; the material distribution bin 13 is fixedly clamped in the material inlet 21; the discharging assembly 3 is rotatably installed in the material distributing bin 13.

A feeding hole 121 is formed in the first partition plate 12, and the storage bin 111 is communicated with the material distribution bin 13 through the feeding hole 121; the discharging assembly 3 is rotatably installed in the material distributing bin 13.

Preferably, a plurality of groups of second partition plates 112 are arranged in the storage bin 111, the storage bin 111 is divided into a plurality of groups of storage bins by the plurality of groups of second partition plates 112, a feeding hole 121 is formed in each group of storage bins, a valve is arranged in each group of feeding holes 121, and the valve can control the feeding of raw materials in the group of storage bins.

In the 3D printing process, when different products need to be printed and different raw materials need to be used, the 3D printer needs to be paused, and the 3D printer needs to be restarted after the residual materials in the hopper are manually cleaned and the new raw materials are replaced to perform printing. Through setting up a plurality of groups of storage silo 111, the clout in the hopper 1 need not to clear up, only needs to put into another group of storage silo 111 with the new raw materials that add, opens the valve on the feed port 121 and can print work, has improved the production efficiency who prints. Meanwhile, a plurality of groups of the storage bins 111 are arranged, so that the raw materials can be mixed and added without manual mixing and adding.

The discharging assembly 3 comprises a discharging cylinder 31, a transmission shaft 32 and a transmission gear 33. Exemplarily, as shown in fig. 4, the transmission shaft 32 is fixedly installed in the discharge cylinder 31, and both ends of the transmission shaft 32 are rotatably installed on the inner wall of the distribution bin 13; one end of the transmission shaft 32 extends to the outer side of the material distribution bin 13; the transmission gear 33 is fixedly installed at one end of the transmission shaft 32.

The take-off cylinder 31 includes a first baffle 311, a rotating drum 312, and a third baffle 313. Illustratively, as shown in fig. 5, the two sets of the first baffles 311 are fixedly installed between the rotating cylinders 312;

a plurality of groups of first clamping grooves 3111 are formed in the first baffle 311, a plurality of groups of second clamping grooves 3121 are formed in the outer circular surface of the drum 312 along the central axis direction, and one group of first clamping grooves 3111 corresponds to one group of second clamping grooves 3121; the transmission shaft 32 is fixedly sleeved in the rotating drum 312.

The third partition 313 is clamped in the second clamping groove 3121 in the length direction, the third partition 313 is clamped in the first clamping groove 3111 in the width direction, a discharge cavity is formed between two adjacent groups of the third partition 313, and the raw materials can be discharged in a component manner through the discharge cavity;

the feeding assembly 4 comprises a second baffle plate 41 and a scraper 42. Illustratively, as shown in fig. 6, two sets of the second baffles 41 are symmetrically arranged at two ends of the scraper 42 in parallel.

An accommodating cavity 47 is formed between the two groups of second baffles 41 and the scraper 42, and the material distribution bin 13 is located in the accommodating cavity 47; the accommodating cavity 47 is used for accommodating the raw materials divided by the discharging assembly 3.

A third clamping groove 45 is formed in the surface of the scraper 42, and the feeding assembly 4 is movably clamped on the conveying platform 5 through the third clamping groove 45; the lower ends of both sides of the scraper 42 are provided with a first screw hole 43 and a guide hole 44.

Preferably, a cleaning unit is provided at a lower end of the scraper 42, and the cleaning unit can clean the raw material remaining on the conveyor table 5.

Specifically, each set of the second baffles 41 includes a fourth baffle 411 and a fifth baffle 412; the fourth baffle 411 and the fifth baffle 412 are both rectangular plates; the fourth baffle 411 is fixedly arranged at one end of the fifth baffle 412, and the height of the fourth baffle 411 is higher than that of the fifth baffle 412;

the upper end surface of the fourth baffle 411 is provided with a plurality of groups of racks 46; a plurality of groups of the racks 46 are in meshed transmission with the transmission gear 33; the scraper 42 is fixedly installed at one end of the fifth baffle 412 far away from the fourth baffle 411.

The transfer platform 5 comprises a transfer plate 51. For example, as shown in fig. 7, first grooves 52 are respectively formed on two sides of the upper plate surface of the conveying flat plate 51 along the length direction, and the two groups of first grooves 52 are symmetrically arranged in parallel; the two groups of second baffles 41 are movably clamped in the two groups of first grooves 52 respectively, and the upper plate surface of the conveying flat plate 51 is movably clamped on the third clamping groove 45 and is positioned in the accommodating cavity 47; the upper plate surface of the conveying flat plate 51 is completely attached to the upper top surface of the third clamping groove 45.

A transmission screw 53 is rotatably arranged on the inner wall of the first groove 52, and the first threaded hole 43 is in threaded connection with the transmission screw 53; the inner wall of the other group of first grooves 52 is rotatably provided with a guide rod 54, and the guide rod 54 is movably sleeved on the guide hole 44; through the transmission screw rod 53 and the guide rod 54, the feeding assembly 4 is slidably mounted on the conveying platform 5, and the feeding assembly 3 moves along the transmission screw rod 53 and the guide rod 54 in the length direction of the conveying platform 5.

One side of the box body 2 far away from the discharge hole 22 is fixedly provided with a motor 24, and the output end of the motor 24 is in transmission connection with the transmission screw rod 53 through a coupler.

A through groove 55 is further formed in one end, far away from the discharging assembly 3, of the conveying flat plate 51; the through slots 55 are located between the two sets of first grooves 52; third grooves 56 are formed in the inner walls of the two sides of the through groove 55; through the third groove 56, the through groove 55 communicates with the first groove 52.

A sieve plate 57 is installed in the through groove 55, a plurality of groups of sieve holes 571 are formed in the sieve plate 57, and the plurality of groups of sieve holes 571 are distributed at equal intervals along the length direction of the conveying flat plate 51; the sieve holes between two adjacent groups of the sieve holes 571 are distributed in a staggered manner, and through the staggered distribution of the sieve holes 571, the raw materials on the sieve plate 57 completely fall into the storage cavity, so that the raw materials are prevented from being completely stacked on the sieve plate 57.

A blanking plate 58 is fixedly installed on the lower plate surface of the conveying flat plate 51, and an included angle between the blanking plate 58 and the lower plate surface of the conveying flat plate 51 is set to be an acute angle; the blanking plate 58 is located right below the through groove 55, and the inclined surface of the blanking plate 58 faces the through groove 55.

Third baffles 59 are fixedly arranged on two sides of the blanking plate 58 respectively; the two groups of third baffle plates 59 are symmetrically arranged in parallel, and the upper ends of the two groups of third baffle plates 59 are fixedly connected with the lower plate surface of the conveying flat plate 51; a storage cavity is formed between the two groups of third baffles 59 and the blanking plate 58; the storage cavity is communicated with the discharge hole 22; the storage cavity is used for accommodating the raw materials conveyed by the feeding component 4, and the raw materials pass through the discharge port 22 to enter a storage box of the 3D printer.

Starting a motor 24, wherein the motor 24 drives the transmission screw rod 53 to rotate, and the transmission screw rod 53 drives the feeding assembly 4 to move along the length direction of the conveying flat plate 51; when the feeding assembly 4 moves, the plurality of groups of racks 46 are meshed with the transmission gear 33 for transmission, the transmission gear 33 drives the transmission shaft 32 to rotate, and the transmission shaft 32 drives the discharging cylinder 31 to rotate; the raw materials in the storage bin 111 are controlled by a valve, fall into the discharging component 3, and are conveyed to the accommodating cavity in the feeding component 4 in a component manner through the discharging cavity under the rotation of the discharging component 3; the scraper 42 drives the raw material to move continuously along the length direction of the conveying flat plate 51; when the feeding assembly 4 is far away from the discharge cylinder 31, the discharge cylinder 31 stops rotating, and the discharge cylinder 31 stops feeding; the feeding component 4 continues to move to one end of the conveying flat plate 51 under the rotation of the transmission screw rod 53, the scraper 42 conveys raw materials to the sieve plate 57, the raw materials fall into the storage cavity through a plurality of groups of sieve holes 571, caked raw materials existing in the raw materials are left on the sieve plate 57 through a plurality of groups of sieve holes 571, the raw materials remained on the sieve plate 57 are rolled and dispersed through the rolling component 6, and the caked raw materials fall into the storage cavity after being dispersed.

The starting motor 24 reverses, the pay-off subassembly 4 is followed carry dull and stereotyped 51's length direction and carry out reciprocating motion, work as the pay-off subassembly 4 move to with when the meshing transmission of row material subassembly 3, row material subassembly 3 feeds in raw material, through the reciprocating motion of pay-off subassembly 4, it is reinforced that row material subassembly 3 carries out intermittent type formula, thereby realizes the pay-off subassembly 4 carries out intermittent type formula with the raw materials to the 3D printer in.

When printing new product, need change new raw materials, only need at this moment with new raw materials add to in the storage silo 111, through the clearance formula feeding mode of pay-off subassembly 4 among the conveyor, the remaining raw materials of a last product is not remained on conveying platform 5, can directly add the material to the printing of feeding new product, need not right conveyor clears up the clout, improves the production efficiency who prints.

The crushing assembly 6 comprises a crushing shaft 62 and a thread block 61, for example, as shown in fig. 8, two ends of the crushing shaft 62 respectively penetrate through two sets of third grooves 56 to be fixedly connected with two sets of thread blocks 61, and the crushing shaft 62 is located above the screen plate 57; the two groups of screw blocks 61 are movably clamped in the first groove 52 respectively.

The two groups of thread blocks 61 are respectively provided with a second threaded hole 63; the second threaded hole 63 is in threaded connection with the transmission screw rod 53; the grinding shaft 62 is close to one side fixed mounting of sieve plate 57 has the lug 64, the lug 64 with the surface of sieve plate 57 is laminated completely, through the lug 64 can be right the caking raw materials carry out more abundant that rolls.

Through motor 24 just reverses, transmission lead screw 53 positive direction rotates, drives screw block 61 is in reciprocal slide in the first recess 542 to the drive the axle 62 of rolling is in carry out reciprocating motion on the sieve 57, through lug 64 rolls remaining raw materials on sieve 57, falls into through a plurality of sets of sieve mesh 571 in the storage cavity, avoids leading to the problem of 3D printer jam because of the caking raw materials.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a 3D prints and uses raw materials conveyor which characterized in that: comprises a hopper (1), a box body (2), a discharging component (3), a feeding component (4), a conveying platform (5) and a rolling component (6);

the conveying platform (5) is fixedly arranged in the box body (2); the hopper (1) is fixedly arranged on the box body (2) and is communicated with the box body (2); the discharging assembly (3) is rotatably arranged in the hopper (1), and the discharging assembly (3) is positioned right above one end of the conveying platform (5);

the feeding assembly (4) comprises a second baffle plate (41) and a scraper plate (42); two groups of second baffles (41) are symmetrically arranged at two ends of the scraper (42) in parallel; an accommodating cavity (47) is formed between the two groups of second baffles (41) and the scraper (42);

the upper surface of the second baffle plate (41) is provided with a rack (46);

a transmission gear (33) is arranged on the discharging component (3), and the transmission gear (33) is in meshing transmission with a plurality of groups of racks (46);

the conveying platform (5) comprises a conveying flat plate (51);

the lower end of the scraper (42) is attached to the upper plate surface of the conveying flat plate (51) and can move along the length direction of the conveying flat plate (51);

a through groove (55) is formed in one end, far away from the discharging assembly (3), of the conveying flat plate (51); a sieve plate (57) is fixedly arranged at the bottom of the through groove (55);

the rolling component (6) is slidably mounted on the through groove (55), the rolling component (6) is positioned above the sieve plate (57), and the lower end of the rolling component (6) is movably attached to the surface of the sieve plate (57); the sliding direction of the rolling component (6) is consistent with that of the feeding component (4).

2. The raw material conveying device for 3D printing according to claim 1, characterized in that: two sides of the upper plate surface of the conveying flat plate (51) along the length direction are respectively provided with a first groove (52), and the two groups of first grooves (52) are symmetrically arranged in parallel; the two groups of second baffles (41) are respectively and movably clamped in the two groups of first grooves (52);

a transmission screw rod (53) is rotatably arranged on the inner wall of one group of first grooves (52), and a guide rod (54) is rotatably arranged on the inner wall of the other group of first grooves (52); the feeding assembly (4) is in threaded connection with the transmission screw rod (53).

3. The raw material conveying device for 3D printing according to claim 2, characterized in that: a blanking plate (58) is fixedly arranged on the lower plate surface of the conveying flat plate (51), and an included angle between the blanking plate (58) and the lower plate surface of the conveying flat plate (51) is set to be an acute angle;

the blanking plate (58) is positioned right below the sieve plate (57), and the inclined surface of the blanking plate (58) faces the through groove (55); third baffle plates (59) are fixedly mounted on two sides of the blanking plate (58) respectively;

the two groups of third baffle plates (59) are symmetrically arranged in parallel, and the upper ends of the two groups of third baffle plates (59) are fixedly connected with the lower plate surface of the conveying flat plate (51); and a storage cavity is formed between the two groups of third baffle plates (59) and the blanking plate (58).

4. The raw material conveying device for 3D printing according to claim 3, characterized in that: third grooves (56) are formed in the inner walls of the two sides of the through groove (55); -through said third groove (56), said through slot (55) communicates with said first groove (52);

the rolling component (6) comprises a rolling shaft (62) and threaded blocks (61), two ends of the rolling shaft (62) penetrate through two groups of third grooves (56) respectively and are fixedly connected with two groups of threaded blocks (61), and the rolling shaft (62) is positioned above the sieve plate (57); the two groups of thread blocks (61) are respectively and movably clamped in the first groove (52);

second threaded holes (63) are respectively formed in the two groups of threaded blocks (61); the second threaded hole (63) is in threaded connection with the transmission screw rod (53); the grinding shaft (62) is close to one side fixed mounting of sieve board (57) has lug (64), lug (64) with the surface of sieve board (57) is laminated completely.

5. The raw material conveying device for 3D printing according to claim 4, characterized in that: a feed inlet (21) is formed in the upper end of the box body (2), and the hopper (1) is installed in the feed inlet (21) in a clamping mode; a discharge hole (22) is formed in one side face of the box body (2), and the material storage cavity is communicated with the discharge hole (22);

one side fixed mounting that box (2) kept away from discharge gate (22) has motor (24), the output of motor (24) pass through the shaft coupling with transmission lead screw (53) transmission is connected.

6. The raw material conveying device for 3D printing according to claim 1, characterized in that: the discharging assembly (3) further comprises a discharging cylinder (31) and a transmission shaft (32);

the transmission shaft (32) is fixedly arranged in the discharge cylinder (31), and two ends of the transmission shaft (32) are rotatably arranged in the hopper (1); one end of the transmission shaft (32) extends to the outer side of the hopper (1); the transmission gear (33) is fixedly arranged at one end of the transmission shaft (32).

7. The raw material conveying device for 3D printing according to claim 6, characterized in that: the discharge cylinder (31) comprises a first baffle (311), a rotary drum (312) and a third baffle (313);

the rotating cylinders (312) are fixedly arranged between the two groups of first baffles (311); the transmission shaft (32) is fixedly sleeved in the rotary drum (312);

a plurality of groups of first clamping grooves (3111) are formed in the first baffle (311), a plurality of groups of second clamping grooves (3121) are formed in the outer circular surface of the drum (312) along the direction of the central axis, and the group of first clamping grooves (3111) correspond to the group of second clamping grooves (3121);

the length direction of the third partition plates (313) is clamped in the second clamping groove (3121), the width direction of the third partition plates (313) is clamped in the first clamping groove (3111), and a discharge cavity is formed between two groups of adjacent third partition plates (313).

8. The raw material conveying device for 3D printing according to claim 7, characterized in that: the hopper (1) comprises a hopper shell (11), a first partition plate (12) is fixedly installed in the hopper shell (11), an inner cavity of the hopper shell (11) is divided into a storage bin (111) and a distribution bin (13) through the first partition plate (12), and the distribution bin (13) is located below the storage bin (111); the material distribution bin (13) is fixedly clamped in a feeding hole (21) of the box body (2);

the discharging component (3) is rotatably arranged in the material distributing bin (13);

the first partition plate (12) is provided with a feeding hole (121), and the storage bin (111) is communicated with the material distribution bin (13) through the feeding hole (121); the transmission shaft (32) is rotatably arranged on the inner wall of the material distribution bin (13), and one end of the transmission shaft (32) penetrates through the outer side of the material distribution bin (13);

the feeding assembly (4) is positioned below the material distribution bin (13).

9. The raw material conveying device for 3D printing according to claim 8, characterized in that: a third clamping groove (45) is formed in the surface of the scraper (42), and the conveying flat plate (51) is clamped in the third clamping groove (45); the upper plate surface of the conveying flat plate (51) is completely attached to the upper top surface of the third clamping groove (45);

the lower ends of two sides of the scraper (42) are provided with a first threaded hole (43) and a guide hole (44); the first threaded hole (43) is in threaded connection with a transmission screw rod (53) in the conveying flat plate (51); the guide hole (44) is movably sleeved on a guide rod (54) in the conveying flat plate (51).

10. The raw material conveying device for 3D printing according to claim 1, characterized in that: each set of said second baffles (41) comprises a fourth baffle (411) and a fifth baffle (412); the fourth baffle (411) and the fifth baffle (412) are both rectangular plates; the fourth baffle (411) is fixedly arranged at one end of the fifth baffle (412);

a plurality of groups of racks (46) are arranged on the upper end face of the fourth baffle (411); a plurality of groups of the racks (46) are in meshed transmission with the transmission gear (33); the scraper (42) is fixedly arranged at one end of the fifth baffle plate (412) far away from the fourth baffle plate (411).