Crushing device for 3D printing materials

Abstract

The invention discloses a crushing device for a 3D printing material, and belongs to the technical field of printing material crushing, the crushing device comprises a base, the top of the base is provided with a screening assembly for screening the printing material, and the screening assembly comprises a screening box, a screening plate, a convex plate, supporting legs, a connecting plate, a first motor and an eccentric block; the screening plate and the inner wall of the screening box are fixedly arranged, the number of the protruding plates is four, the four protruding plates and the four corners of the outer wall of the screening box are fixedly arranged, the number of the supporting legs is the same as that of the protruding plates, the supporting legs are located under the protruding plates, reset springs are fixedly arranged between the supporting legs and the protruding plates, and the supporting legs and the base are fixedly arranged. According to the device, the screening mechanism is arranged, under blocking of the limiting assembly, the time that all materials are stacked at the positions with different pore diameters is prolonged, in the moving process of the limiting assembly, the pore diameters needing to be screened next can be cleaned one by one through the cleaning assembly, and the screening efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of printing material crushing, and in particular relates to a crushing device for 3D printing materials. Background Art

[0002] An important material for 3D printing is engineering plastics, which can be used as engineering materials and plastics to replace metals to manufacture machine parts. Engineering plastics have excellent comprehensive properties, high rigidity, low creep, high mechanical strength, good heat resistance, and good electrical insulation. They can be used for a long time in harsh chemical and physical environments and can replace metals as engineering structural materials. However, they are more expensive and have a smaller output. In the process of crushing engineering plastics, they are usually crushed uniformly, but materials of different sizes have different hardnesses and different crushing times. Uniform crushing leads to poor crushing effects and large cost losses. Summary of the invention

[0003] The purpose of the present invention is to provide a crushing device for 3D printing materials to solve the problem that printing materials of different uses and sizes cannot be screened and crushed in batches.

[0004] In order to achieve the above-mentioned invention object, the present invention adopts the following technical scheme: A crushing device for 3D printing materials according to the present invention comprises a base, a screening component for screening printing materials is arranged on the top of the base, the screening component comprises a screening box, a screening plate, a convex plate, a supporting leg, a connecting plate, a first motor and an eccentric block, the screening plate is fixedly arranged on the inner wall of the screening box, the number of the convex plates is four, and the four convex plates are respectively fixedly arranged on the four corners of the outer wall of the screening box, the number of the supporting legs is the same as the convex plates and they are respectively located directly below the convex plates, and a reset spring is fixedly arranged between the supporting legs and the convex plates, the supporting legs are fixedly arranged on the base, and the connecting The plate is fixedly arranged with the screening box, the first motor is fixedly arranged with the connecting plate, the output end of the first motor is fixedly arranged with the eccentric block, the screening plate is provided with a plurality of groups of screening holes, and the aperture of each group of screening holes increases from left to right, the screening plate is provided with a screening mechanism for limiting the rolling speed of the material to improve the screening efficiency and clean the screening holes, the bottom of the screening box is fixedly provided with a discharging collection component for discharging materials of different sizes after screening, the top of the base is fixedly provided with a crushing barrel near the side of the screening box, and the top of the crushing barrel is fixedly provided with a feeding mechanism for controlling the feeding speed.

[0005] Preferably, the screening mechanism includes a limiting component for following the ups and downs of the screening plate and limiting the material on the screening plate, an adjusting component for adjusting the position of the limiting component and a cleaning component for processing the aperture on the screening plate, the adjusting component is fixed to the base, the limiting component and the adjusting component are slidably arranged, and the cleaning component and the limiting component are fixedly arranged.

[0006] Preferably, the adjustment assembly includes a vertical rod, a threaded rod, a positioning rod and a second motor. The vertical rods are provided in two groups, and each group has two vertical rods. The vertical rods in the first group are rotatably arranged with the threaded rods through bearings, and the vertical rods in the second group are fixedly arranged with the positioning rods. The second motor is fixedly arranged with the vertical rods in the first group, and the output end of the second motor is fixedly arranged with the threaded rods.

[0007] Preferably, the limiting assembly includes a movable plate, a first electric push rod, a fixed plate, a telescopic plate and a fixed shield plate, the movable plate and the threaded rod are threadedly arranged, the movable plate is provided with a slot for the positioning rod to slide, the first electric push rods are provided with two and are fixed to the bottom of the movable plate, the two output ends of the first electric push rods are fixed to the fixed plate, the telescopic plate is slidably arranged inside the fixed plate and a reset spring is fixed between the telescopic plate and the fixed plate, and the fixed shield plates are provided with two and are symmetrically arranged on both sides of the outer wall of the telescopic rod.

[0008] Preferably, the cleaning assembly includes a plurality of cleaning parts, the cleaning parts are fixedly arranged on the bottom of the telescopic plate, the cleaning parts include a second electric push rod, a cleaning butt joint, a limit rod, a sliding sleeve, a first switch, a center rod, a third motor and a blade, the second electric push rod is fixedly arranged on the bottom of the telescopic plate, the cleaning butt joint is fixedly arranged on the output end of the second electric push rod, the limit rod is fixedly arranged on the bottom of the telescopic plate, the sliding sleeve is slidably arranged on the limit rod and is fixedly arranged on the cleaning butt joint, the first switch is fixedly arranged on the limit rod, the third motor is fixedly arranged inside the cleaning butt joint, the output end of the third motor is fixedly arranged on the knife, the bottom of the center rod is fixedly arranged on the cleaning butt joint, the top of the center rod is rotatably arranged with the blade through a bearing, and a sliding groove for the rotation of the blade is provided on the bottom of the cleaning butt joint.

[0009] Preferably, the discharging and collecting assembly includes a discharging box, a partition, a discharging port, a storage box and a baffle. The discharging box is fixedly arranged on the bottom of the screening box. The partitions are provided in multiple numbers and are fixedly arranged on the inner wall of the discharging box. The discharging port is fixedly arranged on one side of the outer wall of the discharging box and is provided in multiple numbers. The storage box is fixedly arranged on the base and is located directly below the discharging port. Storage slots are provided inside the storage box, and the number of storage slots corresponds to the discharging port. The baffle is fixedly arranged on the top of the storage box.

[0010] Preferably, the feeding mechanism includes a feed box, a first rotating shaft rod, a second rotating shaft rod, a feed detection plate and a detection assembly; the feed box is fixedly arranged with the crushing drum; the first rotating shaft rod and the second rotating shaft rod are both rotatably arranged with the inner wall of the feed box through bearings and a torsion spring is fixedly arranged between the first rotating shaft rod, the second rotating shaft rod and the inner wall of the feed box; two feed detection plates are provided and are respectively fixedly arranged with the first rotating shaft rod and the second rotating shaft rod; a reset spring is fixedly arranged between the bottom of the feed detection plate and the inner wall of the feed box; and the detection assembly is fixedly arranged with the outer wall of the feed box.

[0011] Preferably, the detection assembly includes a rotating pointing rod, an arc plate, an extrusion plate and a second switch, the rotating pointing rod is fixed to the first rotating shaft rod and is rotatably arranged with the outer wall of the feed box through a bearing, the arc plate is fixed to one side of the outer wall of the feed box and the arc plate is cocentrically arranged with the rotating pointing rod, the extrusion plate is rotatably arranged with the arc plate through a rotating shaft, the second switch is fixed to the arc plate and is located at the bottom of the extrusion plate, and springs are fixed between the two sides of the bottom of the extrusion plate and the arc plate.

[0012] The present invention is beneficial in that: The present invention provides a screening mechanism, and under the obstruction of the limiting component, the time for all materials to accumulate at the positions of apertures of different sizes is prolonged, and the screening effect is better. In the process of moving the limiting component, the apertures that need to be screened next can be cleaned one by one through the cleaning component, thereby improving the screening efficiency.

[0013] The present invention arranges a collecting component to classify and collect materials of different sizes after screening, thereby making subsequent crushing efficiency higher.

[0014] The present invention provides a feeding mechanism to control the amount and speed of feeding in order to improve the crushing efficiency. The feeding mechanism is used to perform regular feeding to ensure that the crushing efficiency of the crushing drum is maximized each time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention, so that other features, purposes and advantages of the present invention become more obvious. The accompanying drawings of the exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings: Figure 1 This is a schematic diagram of the overall structure of a crushing device for 3D printing materials of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the overall structure of a crushing device for 3D printing materials of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the overall structure of a crushing device for 3D printing materials of the present invention. Figure 3 ; Figure 4 It is a schematic diagram of the overall structure of the screening box of the present invention; Figure 5 It is a schematic diagram of the internal cross-sectional structure of the screening box of the present invention; Figure 6 It is a schematic diagram of the overall structure of the screening mechanism of the present invention; Figure 7 It is a schematic diagram of the connection structure of the cleaning component of the present invention; Figure 8 It is a schematic diagram of the cross-sectional structure of the cleaning member of the present invention; Fig. 9 This is a schematic diagram of the connection and enlarged structure of the feeding mechanism of the present invention. Figure 1 ; Fig.10 This is a schematic diagram of the connection and enlarged structure of the feeding mechanism of the present invention. Figure 2 ; Fig.11 It is an enlarged structural schematic diagram of the feeding mechanism of the present invention; Fig.12 It is a schematic cross-sectional structure diagram of the feeding mechanism of the present invention.

[0016] Description of reference numerals: 1. Base; 2. Screening assembly; 21. Screening box; 22. Screening plate; 23. Convex plate; 24. Support leg; 25. Connecting plate; 26. First motor; 27. Eccentric block; 3. Screening mechanism; 31. Limiting assembly; 311. Moving plate; 312. First electric push rod; 313. Fixed plate; 314. Telescopic plate; 315. Fixed shield; 32. Adjusting assembly; 321. Vertical rod; 322. Threaded rod; 323. Positioning rod; 324. Second motor; 33. Cleaning assembly; 331. Cleaning piece; 332. Second electric push rod; 33 3. Cleaning abutment; 334. Limit rod; 335. Sliding sleeve; 336. First switch; 337. Center rod; 338. Third motor; 339. Blade; 4. Discharge collection assembly; 41. Discharge box; 42. Partition; 43. Discharge port; 44. Storage box; 45. Baffle; 5. Feed mechanism; 51. Feed box; 52. First rotating shaft rod; 53. Second rotating shaft rod; 54. Feed detection plate; 55. Detection assembly; 551. Rotating pointing rod; 552. Arc plate; 553. Extrusion plate; 554. Second switch; 6. Crushing barrel. DETAILED DESCRIPTION

[0017] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0018] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0019] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0020] In addition, the terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0021] like Figure 1 - Fig.12As shown, a crushing device for 3D printing materials according to the present invention includes a base 1, a screening component 2 for screening printing materials is provided on the top of the base 1, the screening component 2 includes a screening box 21, a screening plate 22, a convex plate 23, a supporting leg 24, a connecting plate 25, a first motor 26 and an eccentric block 27, the screening plate 22 is fixedly arranged on the inner wall of the screening box 21, the number of the convex plates 23 is provided, and the four convex plates 23 are respectively fixedly arranged on the four corners of the outer wall of the screening box 21, the number of the supporting legs 24 is the same as the convex plates 23 and they are respectively located directly below the convex plates 23, and a reset spring is fixedly arranged between the supporting legs 24 and the convex plates 23, the supporting legs 24 are fixedly arranged on the base 1, the connecting plate 25 is fixedly arranged on the screening box 21, the first motor 26 is fixedly arranged on the connecting plate 25, the output end of the first motor 26 is fixedly arranged on the eccentric block 27, and a plurality of groups of sieve holes are provided on the screening plate 22, and the aperture of each group of sieve holes is from left to right. The right side becomes larger in sequence. A screening mechanism 3 is provided on the screening plate 22 for limiting the rolling speed of the material, improving the screening efficiency and cleaning the screen holes. A discharging collection component 4 for discharging materials of different sizes after screening is fixedly provided at the bottom of the screening box 21. A crushing cylinder 6 is fixedly provided on the top of the base 1 near the side of the screening box 21. A feeding mechanism 5 for controlling the feeding speed is fixedly provided on the top of the crushing cylinder 6. The first motor 26 provides power. An eccentric block 27 is installed on each side of the first motor 26. The first motor 26 drives the eccentric block 27 to rotate at a high speed to generate centrifugal force. The first motor 26 and the screening box 21 are integrated, thereby driving the entire screening box 21 to vibrate. The vibration of the screening box 21 drives the screening plate 22 to vibrate. During the screening process, the screening effect is accelerated and the screen holes are cleaned through the screening mechanism 3, and then the materials are collected through the discharging collection component 4, and then the feeding speed is controlled by the feeding mechanism 5 to achieve effective crushing.

[0022] Among them, the screening mechanism 3 includes a limiting component 31 for following the ups and downs of the screening plate 22 and limiting the material on the screening plate 22, an adjusting component 32 for adjusting the position of the limiting component 31 and a cleaning component 33 for processing the aperture on the screening plate 22. The adjusting component 32 is fixedly arranged on the base 1, the limiting component 31 and the adjusting component 32 are slidably arranged, and the cleaning component 33 is fixedly arranged on the limiting component 31.

[0023] Secondly, the adjustment component 32 includes a vertical rod 321, a threaded rod 322, a positioning rod 323 and a second motor 324. The vertical rods 321 are provided in two groups, and each group of vertical rods 321 is provided with two. The vertical rods 321 of the first group are rotatably arranged with the threaded rod 322 through bearings, and the vertical rods 321 of the second group are fixedly arranged with the positioning rod 323. The second motor 324 is fixedly arranged with the first group of vertical rods 321, and the output end of the second motor 324 is fixedly arranged with the threaded rod 322. Preferably, the limit assembly 31 includes a movable plate 311, a first motor Push rod 312, fixed plate 313, telescopic plate 314 and fixed shield plate 315, movable plate 311 and threaded rod 322 are threadedly arranged, movable plate 311 is provided with a slot for sliding positioning rod 323, first electric push rod 312 is provided with two and fixedly arranged with the bottom of movable plate 311, output ends of two first electric push rods 312 are fixedly arranged with fixed plate 313, telescopic plate 314 is slidably arranged inside fixed plate 313 and a return spring is fixedly arranged between telescopic plate 314 and fixed plate 313, fixed shield plate 315 is provided with two The cleaning assembly 33 preferably includes a plurality of cleaning members 331, the cleaning members 331 are fixedly arranged at the bottom of the telescopic plate 314, the cleaning members 331 include a second electric push rod 332, a cleaning abutment 333, a limiting rod 334, a sliding sleeve 335, a first switch 336, a center rod 337, a third motor 338 and a blade 339, the second electric push rod 332 is fixedly arranged at the bottom of the telescopic plate 314, the cleaning abutment 333 is fixedly arranged at the output end of the second electric push rod 332, the limiting rod 33 4 is fixedly arranged at the bottom of the telescopic plate 314, the sliding sleeve 335 is slidably arranged with the limiting rod 334 and is fixedly arranged with the cleaning abutment joint 333, the first switch 336 is fixedly arranged with the limiting rod 334, the third motor 338 is fixedly arranged inside the cleaning abutment joint 333, the output end of the third motor 338 is fixedly arranged with the blade 339, the bottom of the center rod 337 is fixedly arranged with the cleaning abutment joint 333, the top of the center rod 337 is rotatably arranged with the blade 339 through a bearing, and a sliding groove for the blade 339 to rotate is opened at the bottom of the cleaning abutment joint 333; Before screening, the second motor 324 is started to drive the threaded rod 322 to rotate, so that the movable plate 311 moves under the limit of the positioning rod 323, so that the limit assembly 31 is located between two different aperture combinations, and the first electric push rod 312 is started to drive the fixed plate 313 to descend, so that the bottom of the fixed shield plate 315 abuts against the upper surface of the screening box 21, and then the first motor 26 is started to provide power. The eccentric blocks 27 are installed on both sides of the first motor 26. The first motor 26 drives the eccentric blocks 27 to rotate at high speed. Centrifugal force is generated. The first motor 26 and the screening box 21 are integrated, which drives the entire screening box 21 to vibrate. The vibration of the screening box 21 drives the screening plate 22 to vibrate, so that the fixed shielding plate 315 rises and falls with the rise and fall of the screening plate 22, limits the material, and introduces the material to be screened into the screening box 21. The aperture of the screening plate 22 is the smallest at the beginning. Under the obstruction of the limiting component 31, all the materials are accumulated at the position of the smallest aperture, and screening is performed once. The screened materials fall to the collecting component for collection The screening time of each group of apertures can be set. After the time is reached, the adjustment component 32 is started to drive the limit component 31 to move to another group of apertures for batch screening. In the process of the movement of the limit component 31, the apertures that need to be screened next are cleaned one by one through the cleaning component 33, so as to improve the screening efficiency. When the fixed baffle 315 moves, the second electric push rod 332 is started to drive the cleaning abutment 333 to clean the aperture. During the descending process of the cleaning abutment 333, the sliding sleeve 335 is moved on the limit rod 334. If the cleaning abutment 333 can clean the material in the aperture, the sliding sleeve 335 stays on the first switch 336 for insufficient time to start the third motor 338. If the aperture is blocked, the cleaning abutment 333 cannot descend, and the sliding sleeve 335 stays on the first switch 336 for too long, the time can be set, indicating that the aperture cannot be cleaned normally by extrusion, then the third motor 338 is started to drive the blade 339 to rotate, and the material inside the aperture is cut off, so as to achieve the cleaning effect.

[0024] Then, the discharging and collecting assembly 4 includes a discharging box 41, a partition 42, a discharging port 43, a storage box 44 and a baffle 45. The discharging box 41 is fixedly arranged at the bottom of the screening box 21. There are multiple partitions 42 and they are fixedly arranged at the inner wall of the discharging box 41. The discharging port 43 is fixedly arranged at one side of the outer wall of the discharging box 41 and there are multiple of them. The storage box 44 is fixedly arranged at the base 1 and is located directly below the discharging port 43. Storage slots are opened inside the storage box 44, and the number of storage slots corresponds to the discharging port 43. The baffle 45 is fixedly arranged at the top of the storage box 44. The screened materials are sequentially passed through the discharging box 41 and enter the different storage slots inside the storage box 44 for collection.

[0025] Finally, the feeding mechanism 5 includes a feeding box 51, a first rotating shaft rod 52, a second rotating shaft rod 53, a feeding detection plate 54 and a detection assembly 55. The feeding box 51 is fixedly arranged with the crushing drum 6. The first rotating shaft rod 52 and the second rotating shaft rod 53 are both rotatably arranged with the inner wall of the feeding box 51 through bearings, and a torsion spring is fixedly arranged between the first rotating shaft rod 52, the second rotating shaft rod 53 and the inner wall of the feeding box 51. There are two feeding detection plates 54, which are respectively fixedly arranged with the first rotating shaft rod 52 and the second rotating shaft rod 53. A reset spring is fixedly arranged between the bottom of the feeding detection plate 54 and the inner wall of the feeding box 51. The detection assembly 55 is fixedly arranged with the outer wall of the feeding box 51. Fixed arrangement, preferably, the detection assembly 55 includes a rotating pointing rod 551, an arc plate 552, an extrusion plate 553 and a second switch 554, the rotating pointing rod 551 is fixedly arranged with the first rotating shaft rod 52 and is rotatably arranged with the outer wall of the feed box 51 through a bearing, the arc plate 552 is fixedly arranged with one side of the outer wall of the feed box 51 and the arc plate 552 is cocentrically arranged with the rotating pointing rod 551, the extrusion plate 553 is rotatably arranged with the arc plate 552 through a rotating shaft, the second switch 554 is fixedly arranged with the arc plate 552 and is located at the bottom of the extrusion plate 553, and springs are fixedly arranged between the two sides of the bottom of the extrusion plate 553 and the arc plate 552; After collection, it is crushed by the crushing cylinder 6. In order to improve the crushing efficiency, the amount and speed of the feed are controlled, and the feeding is carried out in an orderly manner through the feeding mechanism 5. The material to be crushed is poured into the feed box 51, and the material is accumulated on the feed detection plate 54. The feed detection plate 54 rotates and opens to allow the material to enter the crushing cylinder 6. When the material reaches a sufficient weight and a sufficient volume, the opening angle of the feed detection plate 54 becomes larger, and the first rotating shaft rod 52 rotates to drive the rotating pointing rod 551 to rotate, and then drives the squeezing plate 553 to rotate to squeeze the second switch 554, indicating that the amount of one crushing is sufficient and the feeding is stopped.

[0026] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc. made should be included in the protection scope of the present invention.

Claims

1. A crushing device for 3D printing materials, comprising a base (1), characterized in that: A screening assembly (2) for screening printing materials is provided on the top of the base (1), the screening assembly (2) comprising a screening box (21), a screening plate (22), a convex plate (23), a supporting leg (24), a connecting plate (25), a first motor (26) and an eccentric block (27), the screening plate (22) being fixedly arranged on the inner wall of the screening box (21), the convex plates (23) being provided in four numbers, and the four convex plates (23) being fixedly arranged on the four corners of the outer wall of the screening box (21), the supporting legs (24) being the same number as the convex plates (23) and being respectively located directly below the convex plates (23), and a reset spring being fixedly arranged between the supporting legs (24) and the convex plates (23), the supporting legs (24) being fixedly arranged on the base (1), and the connecting plates (25) being provided with a first motor (26) and a first eccentric block (27), The plate (25) is fixedly arranged with the screening box (21), the first motor (26) is fixedly arranged with the connecting plate (25), the output end of the first motor (26) is fixedly arranged with the eccentric block (27), the screening plate (22) is provided with a plurality of groups of screening holes, and the aperture of each group of screening holes increases from left to right, the screening plate (22) is provided with a screening mechanism (3) for limiting the rolling speed of the material, improving the screening efficiency and cleaning the screening holes, the bottom of the screening box (21) is fixedly provided with a discharge collection component (4) for discharging materials of different sizes after screening, the top of the base (1) is fixedly provided with a crushing drum (6) near the side of the screening box (21), and the top of the crushing drum (6) is fixedly provided with a feeding mechanism (5) for controlling the feeding speed.

2. A 3D printing material crushing device according to claim 1, characterized in that: The screening mechanism (3) comprises a limiting component (31) for following the rise and fall of the screening plate (22) and limiting the material on the screening plate (22), an adjusting component (32) for adjusting the position of the limiting component (31), and a cleaning component (33) for processing the aperture of the screening plate (22), wherein the adjusting component (32) is fixedly arranged on the base (1), the limiting component (31) and the adjusting component (32) are slidably arranged, and the cleaning component (33) and the limiting component (31) are fixedly arranged.

3. A 3D printing material crushing device according to claim 2, characterized in that: The adjustment assembly (32) comprises a vertical rod (321), a threaded rod (322), a positioning rod (323) and a second motor (324); the vertical rods (321) are provided in two groups, each group of the vertical rods (321) is provided with two vertical rods; the vertical rods (321) of the first group are rotatably arranged with the threaded rods (322) via bearings; the vertical rods (321) of the second group are fixedly arranged with the positioning rod (323); the second motor (324) is fixedly arranged with the vertical rods (321) of the first group, and the output end of the second motor (324) is fixedly arranged with the threaded rods (322).

4. A 3D printing material crushing device according to claim 3, characterized in that: The position limiting assembly (31) comprises a movable plate (311), a first electric push rod (312), a fixed plate (313), a telescopic plate (314) and a fixed shielding plate (315); the movable plate (311) is threadedly arranged with the threaded rod (322); a slot for sliding the positioning rod (323) is provided on the movable plate (311); two first electric push rods (312) are provided and are fixedly arranged at the bottom of the movable plate (311); the output ends of the two first electric push rods (312) are fixedly arranged at the fixed plate (313); the telescopic plate (314) and the fixed plate (313) are slidably arranged inside; a return spring is fixedly arranged between the telescopic plate (314) and the fixed plate (313); and two fixed shielding plates (315) are provided and are symmetrically arranged at both sides of the outer wall of the telescopic rod.

5. A 3D printing material crushing device according to claim 4, characterized in that: The cleaning assembly (33) comprises a plurality of cleaning members (331), the cleaning members (331) being fixedly arranged at the bottom of the telescopic plate (314), the cleaning members (331) comprising a second electric push rod (332), a cleaning abutment (333), a limit rod (334), a sliding sleeve (335), a first switch (336), a center rod (337), a third motor (338) and a blade (339), the second electric push rod (332) being fixedly arranged at the bottom of the telescopic plate (314), the cleaning abutment (333) being fixedly arranged at the output end of the second electric push rod (332), the limit rod (334) being fixedly arranged at the output end of the telescopic plate (314), and the third motor (338) being fixedly arranged at the output end of the second electric push rod (332). ) is fixedly arranged at the bottom, the sliding sleeve (335) is slidably arranged with the limiting rod (334) and is fixedly arranged with the cleaning abutment (333), the first switch (336) is fixedly arranged with the limiting rod (334), the third motor (338) is fixedly arranged inside the cleaning abutment (333), the output end of the third motor (338) and the blade (339) are fixedly arranged, the bottom of the center rod (337) is fixedly arranged with the cleaning abutment (333), the top of the center rod (337) is rotatably arranged with the blade (339) through a bearing, and the bottom of the cleaning abutment (333) is provided with a slide groove for the blade (339) to rotate.

6. A 3D printing material crushing device according to claim 1, characterized in that: The discharge collection assembly (4) comprises a discharge box (41), a partition (42), a discharge port (43), a storage box (44) and a baffle (45); the discharge box (41) is fixedly arranged at the bottom of the screening box (21); a plurality of partitions (42) are provided and fixedly arranged at the inner wall of the discharge box (41); a plurality of discharge ports (43) are fixedly arranged at one side of the outer wall of the discharge box (41); the storage box (44) is fixedly arranged at the base (1) and is located directly below the discharge port (43); storage slots are provided inside the storage box (44), and the number of storage slots corresponds to the discharge port (43); and the baffle (45) is fixedly arranged at the top of the storage box (44).

7. The 3D printing material crushing device according to claim 1, characterized in that: The feeding mechanism (5) comprises a feeding box (51), a first rotating shaft rod (52), a second rotating shaft rod (53), a feeding detection plate (54) and a detection assembly (55); the feeding box (51) is fixedly arranged with the crushing drum (6); the first rotating shaft rod (52) and the second rotating shaft rod (53) are both rotatably arranged with the inner wall of the feeding box (51) through a bearing; and a torsion spring is fixedly arranged between the first rotating shaft rod (52), the second rotating shaft rod (53) and the inner wall of the feeding box (51); two feeding detection plates (54) are provided and are respectively fixedly arranged with the first rotating shaft rod (52) and the second rotating shaft rod (53); a return spring is fixedly arranged between the bottom of the feeding detection plate (54) and the inner wall of the feeding box (51); and the detection assembly (55) is fixedly arranged with the outer wall of the feeding box (51).

8. A 3D printing material crushing device according to claim 7, characterized in that: The detection assembly (55) comprises a rotating pointing rod (551), an arc plate (552), an extrusion plate (553) and a second switch (554); the rotating pointing rod (551) is fixedly arranged with the first rotating shaft rod (52) and is rotatably arranged with the outer wall of the feed box (51) through a bearing; the arc plate (552) is fixedly arranged with one side of the outer wall of the feed box (51) and the arc plate (552) and the rotating pointing rod (551) are cocentrically arranged; the extrusion plate (553) is rotatably arranged with the arc plate (552) through a rotating shaft; the second switch (554) is fixedly arranged with the arc plate (552) and is located at the bottom of the extrusion plate (553); and springs are fixedly arranged between the two sides of the bottom of the extrusion plate (553) and the arc plate (552).

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