Wire feeding equipment for 3D printer

Abstract

The utility model discloses wire feeding equipment for a 3D printer, and belongs to the technical field of material transportation processing, the wire feeding equipment comprises a hopper, a first material crushing mechanism and a first filter plate, the hopper is provided with a feed port and a discharge port, a trough is formed in the hopper, and the feed port, the trough and the discharge port are communicated in sequence; the first crushing mechanism comprises a first driving assembly, a pushing part and a first extrusion crushing part, the first driving assembly is installed on the hopper, the first extrusion crushing part is located in the trough, the first end of the pushing part penetrates through the hopper and is installed on the first extrusion crushing part, and the pushing part is in sliding fit with the hopper; the second end of the pushing piece is installed at the output end of the first driving assembly. The first filter plate is installed in the trough and located below the first extruding and crushing part. The first extrusion crushing part extrudes and mashes the materials, the mashed materials are discharged through the first filter plate, the materials which are not mashed are left on the first filter plate to be extruded and mashed again, and the material mashing effect is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of material transportation and processing, in particular to a wire material feeding device for a 3D printer. Background Art

[0002] 3D printing is a technology that uses digital model files as the basis, using bondable materials such as powdered metal or photosensitive resin to construct objects by printing layer by layer. 3D printing filaments are usually produced and processed using an extruder, which requires a feeding device to feed the material when working.

[0003] The existing Chinese patent publication number is CN218660367U, which discloses a plastic extruder with a feeding device, including a detachable feeding shell installed at the inlet end of the plastic extruder, a stirring breaker is arranged in the feeding shell, and the stirring breaker is divided into a crushing unit at the upper end and a stirring unit at the lower end. A magnetic suction plate is arranged on the inner wall of the feeding shell, and a vertically movable filter is arranged at the lower end of the feeding shell. One end of the filter is connected to the vibration motor through the feeding shell through a connecting shaft. The agglomerated material is continuously crushed under the action of the crushing unit, and then stirred under the action of the stirring unit to achieve the effect of full mixing. The filter is used to prevent the material that has not been crushed from entering the plastic extruder. The filter vibrates up and down to accelerate the drop, thereby ensuring the continuity of the feeding and improving the work efficiency.

[0004] Based on the above patented technology and existing equipment, although the existing wire processing and feeding can break the raw materials, the breaking effect of the raw materials is poor. Large pieces of materials can easily get stuck in the feed pipe, causing the feed box to be blocked, affecting the feeding efficiency. Utility Model Content

[0005] The purpose of the utility model is to improve the problem that the existing feeding equipment has a poor material crushing effect, and to provide a wire feeding equipment for a 3D printer.

[0006] The technical solutions to achieve the above objectives include the following:

[0007] A wire feeding device for a 3D printer, comprising a hopper, a first crushing mechanism, and a first filter plate, wherein the hopper has a feed port and a discharge port, a trough is formed inside the hopper, and the feed port, the trough, and the discharge port are connected in sequence;

[0008] The first crushing mechanism includes a first driving assembly, a pushing member, and a first extrusion and crushing member. The first driving assembly is installed on the hopper, and the first extrusion and crushing member is located in the material trough. The first end of the pushing member passes through the hopper and is installed on the first extrusion and crushing member. The pushing member is slidably matched with the hopper, and the second end of the pushing member is installed on the output end of the first driving assembly; the first filter plate is installed in the material trough and is located below the first extrusion and crushing member.

[0009] In one embodiment, the pushing member includes a turntable, a rotating rod, and a pushing rod. The turntable is installed on the output end of the first driving component. The first end of the rotating rod is rotatably installed on the circumference of the turntable and is arranged close to the outer end of the turntable. The second end of the rotating rod is hinged to the first end of the pushing rod. The second end of the pushing rod passes through the hopper and is installed on the first extrusion crushing member.

[0010] In one embodiment, a pin is provided on the circumference of the rotating disk, and the rotating rod is sleeved outside the pin and rotates with the pin;

[0011] The pusher also has a guide rod, a first end of which passes through the hopper and is mounted on the first extrusion crushing member, a second end of which abuts against an outer wall of the hopper, and the guide rod is slidably matched with the hopper.

[0012] In one embodiment, the feeding equipment also includes a second drive assembly, a transmission assembly, and a second extrusion crushing piece. The second drive assembly is installed on the hopper, and the first drive assembly is transmission-coordinated with the second drive assembly through the transmission assembly; the second extrusion crushing piece is installed on the second drive assembly, and the first extrusion crushing piece and the second extrusion crushing piece are arranged opposite to each other; the first extrusion crushing piece is provided with a first convex tooth, and the second extrusion crushing piece is provided with a second convex tooth, and the first convex tooth cooperates with the second convex tooth.

[0013] In one embodiment, the first driving assembly includes a first motor, a first support rod, a second support rod, and a first rotating shaft, wherein the first end of the first support rod is mounted on the side wall of the hopper, the second support rod is mounted on the second end of the first support rod, the first motor is mounted on the second support rod, the first end of the first rotating shaft is mounted on the output end of the first motor, and the second end of the first rotating shaft passes through the first support rod and is connected to the pushing member;

[0014] The transmission assembly includes a driving wheel, a driven wheel and a transmission belt. The driving wheel is sleeved on the outside of the first rotating shaft, and the driven wheel is installed on the second driving assembly. The two ends of the transmission belt are respectively sleeved on the outside of the driving wheel and the driven wheel, and rotate in coordination with the driving wheel and the driven wheel.

[0015] In one embodiment, the feeding device further comprises a second crushing mechanism and a feeding box, wherein a first end of the second crushing mechanism is connected to a discharge port of the hopper, and a second end of the second crushing mechanism is mounted on the feeding box;

[0016] The second crushing mechanism includes a shell, a first stirring component, and a third driving component. The third driving component is installed on the shell, the first stirring component is installed on the output end of the third driving component and is located in the shell, and the action direction of the first stirring component is toward the inner wall of the shell.

[0017] In one embodiment, the third driving assembly includes a second motor, a second rotating shaft, and a third supporting rod, wherein the second motor is mounted on the housing, the first end of the second rotating shaft is mounted on the output end of the second motor, the second end of the second rotating shaft is inserted into the housing, the third supporting rod is mounted on the second rotating shaft, and the length direction of the third supporting rod intersects with the length direction of the second rotating shaft;

[0018] The first stirring assembly comprises a sliding rod, a smashing plate, a first spring, a support block, and an abutment block; the support block is mounted on the third support rod, the first end of the sliding rod passes through the support block and is connected to the smashing plate, the abutment block is mounted on the second end of the sliding rod, the sliding rod and the support block are slidably matched, the first spring is sleeved outside the sliding rod, and the two ends of the first spring are respectively connected to the support block and the abutment block;

[0019] The masher plate has a third protruding tooth, and the third protruding tooth faces the inner wall of the housing.

[0020] In one embodiment, there are a plurality of the first stirring components, the plurality of first stirring components are arranged in a direction along the height of the housing, and the plurality of first stirring components are distributed around the second rotating shaft.

[0021] In one embodiment, the second crushing mechanism further comprises a scraping assembly and a second filter plate, the second filter plate is mounted on the bottom of the housing, the scraping assembly is mounted on the second rotating shaft, and the scraping assembly is located on the second filter plate;

[0022] The scraping assembly includes a scraper, a second spring, a connecting rod, and a limit block. The connecting rod is installed on the second rotating shaft. The end of the connecting rod close to the second filter plate has a mounting groove. The second spring is arranged in the mounting groove. The limit block is installed on the scraper and is at least partially arranged in the mounting groove. The two ends of the second spring are respectively against the limit block and the connecting rod. The side of the scraper facing away from the limit block is in contact with the second filter plate.

[0023] The technical solution provided by the utility model has the following advantages and effects:

[0024] The material enters the trough through the feed port and accumulates on the first filter plate. The first driving component drives the pushing member to move, and the pushing member drives the first extrusion and crushing member to move back and forth in the hopper. When the first extrusion and crushing member moves close to the inner wall of the hopper, it squeezes the material to crush the material, thereby crushing the material in the trough. The crushed material is discharged to the discharge port through the first filter plate, so that the material can proceed to the next process. The material that has not been crushed remains on the first filter plate and is squeezed and crushed again by the first extrusion and crushing member, so that the material that has not been crushed can be prevented from entering the next process and from being blocked in subsequent transportation, thereby improving the problem that the existing feeding equipment has poor effect in crushing materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings herein show specific examples of the technical solutions described in the present utility model, and together with the specific implementation methods constitute a part of the specification, and are used to explain the technical solutions, principles and effects of the present utility model.

[0026] Unless otherwise specified or defined, the same reference numerals in different drawings represent the same or similar technical features, and the same or similar technical features may also be represented by different reference numerals.

[0027] Figure 1 It is a schematic diagram of a feeding device in one embodiment of the utility model;

[0028] Figure 2 It is an enlarged schematic diagram of the first crushing mechanism and the hopper in one embodiment of the utility model;

[0029] Figure 3 It is a cross-sectional view of the first crushing mechanism and the hopper in one embodiment of the utility model;

[0030] Figure 4 It is a cross-sectional view of a feeding device in one embodiment of the utility model;

[0031] Figure 5 In one embodiment of the utility model Figure 4 A local enlarged view of point A;

[0032] Description of reference numerals:

[0033] 100. Feeding equipment;

[0034] 1. Hopper; 11. Feed port; 12. Discharge port; 13. First filter plate; 14. Feed trough;

[0035] 2. First crushing mechanism; 21. First driving assembly; 211. First support rod; 212. Second support rod; 210. Pushing member; 213. Turntable; 2131. Pin; 214. Rotating rod; 215. Pushing rod; 216. Guide rod; 217. First motor; 218. First rotating shaft; 22. Second driving assembly; 23. First extrusion crushing member; 231. First convex tooth; 24. Second extrusion crushing member; 241. Second convex tooth; 25. Transmission assembly; 251. Driving wheel; 252. Transmission belt; 253. Driven wheel;

[0036] 3. Second crushing mechanism; 30. Housing; 301. Third driving assembly; 31. Second motor; 32. Second rotating shaft; 33. Third supporting rod; 34. First stirring assembly; 341. Sliding rod; 342. Crushing plate; 3421. Third convex tooth; 343. First spring; 344. Support block; 345. Abutment block; 35. Scraping assembly; 351. Scraping plate; 352. Second spring; 353. Connecting rod; 354. Stopping block; 36. Second stirring assembly; 361. Fourth convex tooth; 37. Second filter plate;

[0037] 4. Feed box;

[0038] 5. Base. DETAILED DESCRIPTION

[0039] In order to facilitate the understanding of the present invention, specific embodiments of the present invention will be described in more detail below with reference to the accompanying drawings.

[0040] Unless otherwise specified or defined, the "first, second..." used in this article is merely used to distinguish names and does not represent a specific quantity or order.

[0041] Unless specifically stated or defined otherwise, the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0042] It should be noted that when a component is considered to be "fixed to" another component, it can be directly fixed to the other component or there can be a central component; when an component is considered to be "connected to" another component, it can be directly connected to the other component or there can be a central component at the same time; when an component is considered to be "installed on" another component, it can be directly installed on the other component or there can be a central component at the same time. When an component is considered to be "set on" another component, it can be directly set on the other component or there can be a central component at the same time.

[0043] like Figures 1 to 4As shown, a wire feeding device 100 for a 3D printer includes a hopper 1, a first crushing mechanism 2, and a first filter plate 13. The hopper 1 has a feed port 11 and a discharge port 12. A trough 14 is formed in the hopper 1. The feed port 11, the trough 14, and the discharge port 12 are connected in sequence; the first crushing mechanism 2 includes a first driving assembly 21, a pushing member 210, and a first extrusion crushing member 23. The first driving assembly 21 is installed on the hopper 1, and the first extrusion crushing member 23 is located in the trough 14. The first end of the pushing member 210 passes through the hopper 1 and is installed on the first extrusion crushing member 23. The pushing member 210 is slidably matched with the hopper 1, and the second end of the pushing member 210 is installed on the output end of the first driving assembly 21; the first filter plate 13 is installed in the trough 14 and is located below the first extrusion crushing member 23. In this embodiment, the material enters the trough 14 through the feed port 11 and accumulates on the first filter plate 13. The first driving component 21 drives the pushing member 210 to move, and the pushing member 210 drives the first extrusion and crushing member 23 to move back and forth in the hopper 1. When the first extrusion and crushing member 23 moves close to the inner wall of the hopper 1, it squeezes the material and crushes the material, thereby crushing the material in the trough 14. The crushed material is discharged to the discharge port 12 through the first filter plate 13, so that the material proceeds to the next process. The material that has not been crushed remains on the first filter plate 13 and is squeezed and crushed again by the first extrusion and crushing member 23, so that the material that has not been crushed can be prevented from entering the next process, and the material can be prevented from being blocked in subsequent transportation, and the problem of poor material crushing effect of the existing feeding equipment 100 can be improved.

[0044] like Figure 2 and Figure 3As shown, the pushing member 210 includes a turntable 213, a rotating rod 214, and a pushing rod 215. The turntable 213 is installed on the output end of the first driving component 21. The first end of the rotating rod 214 is rotatably installed on the circumference of the turntable 213 and is arranged close to the outer end of the turntable 213. The second end of the rotating rod 214 is hinged to the first end of the pushing rod 215. The second end of the pushing rod 215 passes through the hopper 1 and is installed on the first extrusion crushing member 23. In this embodiment, the first driving assembly 21 is used to drive the rotating disk 213 to rotate. The first end of the rotating rod 214 moves circumferentially around the outer end of the rotating disk 213 under the drive of the rotating disk 213. Since the second end of the rotating rod 214 is hinged to the first end of the pushing rod 215, when the first end of the rotating rod 214 moves to the side close to the hopper 1, the rotating rod 214 will drive the pushing rod 215 to move, so that the pushing rod 215 drives the first extrusion and crushing member 23 to move toward the side wall of the hopper 1 in the trough 14 to achieve extrusion and crushing of materials. When the first end of the rotating rod 214 moves to the side away from the hopper 1, the rotating rod 214 will drive the pushing rod 215 to move, so that the pushing rod 215 drives the first extrusion and crushing member 23 to reset in the trough 14. When the rotating disk 213 rotates, the first extrusion and crushing member 23 moves back and forth in the trough 14 to achieve repeated extrusion and crushing of materials.

[0045] like Figure 2 and Figure 3 As shown, a pin shaft 2131 is provided on the circumference of the turntable 213, and the rotating rod 214 is sleeved on the outside of the pin shaft 2131 and rotates with the pin shaft 2131; in this embodiment, the pin shaft 2131 is provided on the turntable 213 to improve the passability of the rotating rod 214 and the turntable 213. The rotating rod 214 is prevented from getting stuck when the turntable 213 rotates. Moreover, after the turntable 213 rotates one circle, the push rod 215 completes a reciprocating motion.

[0046] In addition, the pusher 210 further has a guide rod 216, a first end of which passes through the hopper 1 and is mounted on the first extrusion crushing member 23, a second end of which abuts against the outer wall of the hopper 1, and the guide rod 216 is in sliding cooperation with the hopper 1. In this embodiment, by providing the guide rod 216, the contact area of ​​the first extrusion crushing member 23 in sliding cooperation with the hopper 1 is increased, and the stability of the first extrusion crushing member 23 when sliding is increased.

[0047] like Figure 2 and Figure 3As shown, the feeding device 100 also includes a second driving component 22, a transmission component 25, and a second extrusion crushing member 24. The second driving component 22 is installed on the hopper 1, and the first driving component 21 is transmitted and matched with the second driving component 22 through the transmission component 25; the second extrusion crushing member 24 is installed on the second driving component 22, and the first extrusion crushing member 23 is arranged opposite to the second extrusion crushing member 24; the first extrusion crushing member 23 is provided with a first convex tooth 231, and the second extrusion crushing member 24 is provided with a second convex tooth 241, and the first convex tooth 231 cooperates with the second convex tooth 241. In this embodiment, by setting the second extrusion crushing member 24, and the first extrusion crushing member 23 and the second extrusion crushing member 24 are arranged opposite to each other, when the material enters the trough 14, under the push of the first drive assembly 21 and the second drive assembly 22, the first extrusion crushing member 23 and the second extrusion crushing member 24 move in the same direction, when it is necessary to extrude and crush the material, the first extrusion crushing member 23 and the second extrusion crushing member 24 are close to each other, when it is necessary to reset, the first extrusion crushing member 23 and the second extrusion crushing member 24 are far away from each other, reducing the moving stroke of the single first extrusion crushing member 23, so that the crushing efficiency of the first crushing mechanism 2 will be greatly improved in the same time. The first protruding teeth 231 of the first extrusion crushing member 23 cooperate with the second protruding teeth 241 of the second extrusion crushing member 24, and the material is completely crushed under the action of the first protruding teeth 231 and the second protruding teeth 241, further improving the processing efficiency of extrusion and crushing.

[0048] like Figure 2 and Figure 3 As shown, the first driving assembly 21 includes a first motor 217, a first support rod 211, a second support rod 212, and a first rotating shaft 218. The first end of the first support rod 211 is installed on the side wall of the hopper 1, the second support rod 212 is installed on the second end of the first support rod 211, the first motor 217 is installed on the second support rod 212, the first end of the first rotating shaft 218 is installed on the output end of the first motor 217, and the second end of the first rotating shaft 218 passes through the first support rod 211 and is connected to the pushing member 210; the transmission assembly 25 includes a driving wheel 251, a driven wheel 253 and a transmission belt 252, the driving wheel 251 is sleeved on the outside of the first rotating shaft 218, the driven wheel 253 is installed on the second driving assembly 22, and the two ends of the transmission belt 252 are respectively sleeved on the outside of the driving wheel 251 and the driven wheel 253, and rotate with the driving wheel 251 and the driven wheel 253.

[0049] In this embodiment, the first motor 217 is used to provide power for the first crushing mechanism 2. The first motor 217 drives the first rotating shaft 218 to rotate, and the first rotating shaft 218 drives the rotating disk 213 to rotate, thereby driving the first extrusion crushing member 23 to move back and forth. Moreover, when the first rotating shaft 218 rotates, it will drive the driving wheel 251 to rotate, and the driving wheel 251 drives the driven wheel 253 to rotate through the transmission belt 252, and the driven wheel 253 drives the second driving assembly 22 to rotate. This second driving assembly 22 can adopt a structure similar to the first driving assembly 21, but the difference from the first driving assembly 21 is that the second driving assembly 22 does not need to adopt an additional power source. When the first motor 217 rotates, it will drive the second driving assembly 22 to move through the transmission assembly 25, thereby driving the first extrusion crushing member 23 and the second extrusion crushing member 24 to move closer to or away from each other, further realizing the first extrusion crushing member 23 and the second extrusion crushing member 24 to extrude and crush materials.

[0050] like Figure 1 , Figure 4 , Figure 5 As shown, the feeding device 100 further includes a second crushing mechanism 3 and a feeding box 4, wherein the first end of the second crushing mechanism 3 is communicated with the discharge port 12 of the hopper 1, and the second end of the second crushing mechanism 3 is mounted on the feeding box 4; the second crushing mechanism 3 includes a housing 30, a first stirring assembly 34, and a third driving assembly 301, wherein the third driving assembly 301 is mounted on the housing 30, the first stirring assembly 34 is mounted on the output end of the third driving assembly 301, and is located in the housing 30, and the action direction of the first stirring assembly 34 is toward the inner wall of the housing 30. In this embodiment, the material crushed by the first crushing mechanism 2 enters the housing 30 of the second crushing mechanism 3, and the third driving assembly 301 is used to drive the first stirring assembly 34 to rotate in the housing 30. When the first stirring assembly 34 rotates in the housing 30, the first stirring assembly 34 realizes the extrusion and crushing of the material, further improving the processing effect of the feeding device 100.

[0051] like Figure 5As shown, the third driving assembly 301 includes a second motor 31, a second rotating shaft 32, and a third supporting rod 33. The second motor 31 is mounted on the housing 30. The first end of the second rotating shaft 32 is mounted on the output end of the second motor 31. The second end of the second rotating shaft 32 is inserted into the housing 30. The third supporting rod 33 is mounted on the second rotating shaft 32, and the length direction of the third supporting rod 33 intersects with the length direction of the second rotating shaft 32. The first stirring assembly 34 includes a sliding rod 341, a smashing plate 342, a first spring 343, and a supporting block 34 4. Abutment block 345; the support block 344 is installed on the third support rod 33, the first end of the sliding rod 341 passes through the support block 344 and is connected to the crushing plate 342, the abutment block 345 is installed on the second end of the sliding rod 341, the sliding rod 341 and the support block 344 are slidably matched, the first spring 343 is sleeved on the outside of the sliding rod 341, and the two ends of the first spring 343 are respectively connected to the support block 344 and the abutment block 345; the crushing plate 342 has a third convex tooth 3421, and the third convex tooth 3421 faces the inner wall of the shell 30.

[0052] In this embodiment, the second motor 31 is used to drive the second rotating shaft 32 to rotate. When the second rotating shaft 32 rotates, the third supporting rod 33 rotates in the housing 30. The third supporting rod 33 drives the first stirring assembly 34 to rotate and stir the material in the housing 30. The material between the first stirring assembly 34 and the inner wall of the housing 30 will be squeezed by the third convex teeth 3421 and further crushed. After the crushing plate 342 abuts against the material, it will generate a reverse force to push the sliding rod 341 to move on the supporting block 344. Since the two ends of the first spring 343 are respectively connected to the supporting block 344 and the abutting block 345, the crushing plate 342 will pull the first spring 343 when moving, so that the first spring 343 generates a reverse force. As the crushing plate 342 rotates continuously in the housing 30 and contacts and squeezes the material, the crushing plate 342 will move back and forth in the sliding direction of the sliding rod 341 under the action of the first spring 343, and continuously squeeze the material in the housing 30, further improving the crushing efficiency of the material. Moreover, the third support rod 33 also has a second stirring assembly 36, which rotates with the third support rod 33. When the fourth protruding teeth 361 of the second stirring assembly 36 rotate, the material in the housing 30 is stirred and crushed, thereby further improving the material crushing efficiency. The first stirring assembly 34 and the second stirring assembly 36 are distributed in the radial direction of the housing 30, and the stirring and crushing of the material in the housing 30 is achieved under the rotation of the third support rod 33.

[0053] like Figure 5As shown, the first stirring assembly 34 has a plurality of first stirring assemblies 34, and the plurality of first stirring assemblies 34 are arranged in a direction of the height of the housing 30, and the plurality of first stirring assemblies 34 are distributed around the second rotating shaft 32. In this embodiment, a plurality of first stirring assemblies 34 are used, and are all installed on the third support rod 33. When the third support rod 33 rotates in the housing 30, the plurality of first stirring assemblies 34 repeatedly squeeze and crush the material around the circumference of the housing 30, thereby further improving the crushing efficiency of the material in the housing 30.

[0054] like Figure 5 As shown, the second crushing mechanism 3 also has a scraping component 35 and a second filter plate 37. The second filter plate 37 is installed at the bottom of the shell 30. The scraping component 35 is installed on the second rotating shaft 32, and the scraping component 35 is located on the second filter plate 37. In this embodiment, the scraping component 35 is installed on the second rotating shaft 32 and is located on the second filter plate 37. When the second rotating shaft 32 rotates, it drives the scraping component 35 to move on the second filter plate 37. The scraping component 35 is used to scrape the material on the second filter plate 37 so that the material is crushed again by the first stirring component 34 until the material can pass through the second filter plate 37 and enter the feeding box 4. This feeding box 4 is installed on the base 5. The base 5 improves the stability of the first crushing mechanism 2 and the second crushing mechanism 3 during operation.

[0055] The scraping assembly 35 includes a scraper 351, a second spring 352, a connecting rod 353, and a limit block 354. The connecting rod 353 is installed on the second rotating shaft 32. The end of the connecting rod 353 close to the second filter plate 37 has a mounting groove. The second spring 352 is arranged in the mounting groove. The limit block 354 is installed on the scraper 351 and is at least partially arranged in the mounting groove. The two ends of the second spring 352 are respectively against the limit block 354 and the connecting rod 353. The side of the scraper 351 facing away from the limit block 354 is in contact with the second filter plate 37. In this embodiment, the scraper 351 cooperates with the connecting rod 353 through the limit block 354, and the connecting rod 353 is installed on the second rotating shaft 32. When the connecting rod 353 rotates, the scraper 351 is driven to move on the second filter plate 37 through the limit block 354; because the two ends of the second spring 352 are respectively against the limit block 354 and the connecting rod 353, the limit block 354 squeezes the second spring 352 during installation, and the second spring 352 generates a reverse force and acts on the limit block 354, and the limit block 354 acts on the scraper 351, so that the scraper 351 and the second filter plate 37 are always in contact, thereby improving the compactness of the cooperation between the scraper 351 and the second filter plate 37.

[0056] like Figures 1 to 5 As shown, the utility model also proposes a feeding method, comprising the following steps:

[0057] Step 1: The material enters the trough 14 from the feed port 11, and the first drive assembly 21 is turned on. The first drive assembly 21 drives the first extrusion and crushing member 23 to move through the push member 210;

[0058] Step 2: The first extrusion crushing member 23 moves back and forth in the material trough 14 to extrude and crush the material in the material trough 14 , and the crushed material is discharged from the first filter plate 13 to the discharge port 12 .

[0059] In this embodiment, through the above-mentioned feeding method, the material is squeezed and crushed by the first extrusion crushing member 23 in the hopper 1, and the crushed material is discharged from the first filter plate 13, and the uncrushed material continues to be squeezed by the first extrusion crushing member 23, so that the uncrushed material is prevented from entering the next process and the material is prevented from being blocked in the feeding device 100. In addition, the operation is simple, and it only needs to continuously convey the material into the hopper 1 to realize mechanical and automated crushing and transportation of the material.

[0060] When quoting drawing descriptions, new features that appear are described; in order to avoid repeated quotations of drawings resulting in less concise descriptions, features that have been described clearly will not be quoted in the drawings one by one.

[0061] The purpose of the above embodiments is to exemplarily reproduce and deduce the technical solution of the utility model, and to fully describe the technical solution, purpose and effect of the utility model. Its purpose is to make the public understand the disclosed content of the utility model more thoroughly and comprehensively, and it does not limit the protection scope of the utility model.

[0062] The above embodiments are not exhaustive enumerations based on the present invention, and there may be multiple other implementations not listed. Any replacement and improvement made without violating the concept of the present invention shall fall within the protection scope of the present invention.

Claims

1. A wire feeding device for a 3D printer, characterized in that: It includes a hopper, a first crushing mechanism, and a first filter plate. The hopper has a feed port and a discharge port. A trough is formed inside the hopper. The feed port, the trough, and the discharge port are connected in sequence. The first crushing mechanism includes a first driving assembly, a pushing member, and a first extrusion and crushing member. The first driving assembly is installed on the hopper, and the first extrusion and crushing member is located in the material trough. The first end of the pushing member passes through the hopper and is installed on the first extrusion and crushing member. The pushing member is slidably matched with the hopper, and the second end of the pushing member is installed on the output end of the first driving assembly; the first filter plate is installed in the material trough and is located below the first extrusion and crushing member.

2. The feeding device according to claim 1, characterized in that: The pushing member includes a turntable, a rotating rod, and a pushing rod. The turntable is installed on the output end of the first driving component. The first end of the rotating rod is rotatably installed on the circumference of the turntable and is arranged close to the outer end of the turntable. The second end of the rotating rod is hinged to the first end of the pushing rod. The second end of the pushing rod passes through the hopper and is installed on the first extrusion crushing member.

3. The feeding device according to claim 2, characterized in that: A pin is provided on the circumference of the rotating disk, and the rotating rod is sleeved outside the pin and rotates with the pin; The pusher also has a guide rod, a first end of which passes through the hopper and is mounted on the first extrusion crushing member, a second end of which abuts against an outer wall of the hopper, and the guide rod is slidably matched with the hopper.

4. The feeding device according to claim 1, characterized in that: The feeding equipment also includes a second drive assembly, a transmission assembly, and a second extrusion and crushing piece. The second drive assembly is installed on the hopper, and the first drive assembly is transmission-coordinated with the second drive assembly through the transmission assembly; the second extrusion and crushing piece is installed on the second drive assembly, and the first extrusion and crushing piece is arranged opposite to the second extrusion and crushing piece; the first extrusion and crushing piece is provided with a first convex tooth, and the second extrusion and crushing piece is provided with a second convex tooth, and the first convex tooth cooperates with the second convex tooth.

5. The feeding device according to claim 4, characterized in that: The first driving assembly includes a first motor, a first support rod, a second support rod, and a first rotating shaft, wherein the first end of the first support rod is mounted on the side wall of the hopper, the second support rod is mounted on the second end of the first support rod, the first motor is mounted on the second support rod, the first end of the first rotating shaft is mounted on the output end of the first motor, and the second end of the first rotating shaft passes through the first support rod and is connected to the pushing member; The transmission assembly includes a driving wheel, a driven wheel and a transmission belt. The driving wheel is sleeved on the outside of the first rotating shaft, and the driven wheel is installed on the second driving assembly. The two ends of the transmission belt are respectively sleeved on the outside of the driving wheel and the driven wheel, and rotate in coordination with the driving wheel and the driven wheel.

6. The feeding device according to claim 1, characterized in that: The feeding device further comprises a second crushing mechanism and a feeding box, wherein a first end of the second crushing mechanism is connected to a discharge port of the hopper, and a second end of the second crushing mechanism is mounted on the feeding box; The second crushing mechanism includes a shell, a first stirring component, and a third driving component. The third driving component is installed on the shell, the first stirring component is installed on the output end of the third driving component and is located in the shell, and the action direction of the first stirring component is toward the inner wall of the shell.

7. The feeding device according to claim 6, characterized in that: The third driving assembly includes a second motor, a second rotating shaft, and a third supporting rod, wherein the second motor is mounted on the housing, the first end of the second rotating shaft is mounted on the output end of the second motor, the second end of the second rotating shaft is inserted into the housing, the third supporting rod is mounted on the second rotating shaft, and the length direction of the third supporting rod intersects with the length direction of the second rotating shaft; The first stirring assembly comprises a sliding rod, a smashing plate, a first spring, a support block, and an abutment block; the support block is mounted on the third support rod, the first end of the sliding rod passes through the support block and is connected to the smashing plate, the abutment block is mounted on the second end of the sliding rod, the sliding rod and the support block are slidably matched, the first spring is sleeved outside the sliding rod, and the two ends of the first spring are respectively connected to the support block and the abutment block; The masher plate has a third protruding tooth, and the third protruding tooth faces the inner wall of the housing.

8. The feeding device according to claim 7, characterized in that: There are a plurality of the first stirring components, and the plurality of first stirring components are arranged in a direction along the height of the shell, and the plurality of first stirring components are distributed around the second rotating shaft.

9. The feeding device according to claim 7, characterized in that: The second crushing mechanism also has a scraping assembly and a second filter plate, the second filter plate is mounted on the bottom of the housing, the scraping assembly is mounted on the second rotating shaft, and the scraping assembly is located on the second filter plate; The scraping assembly includes a scraper, a second spring, a connecting rod, and a limit block. The connecting rod is installed on the second rotating shaft. The end of the connecting rod close to the second filter plate has a mounting groove. The second spring is arranged in the mounting groove. The limit block is installed on the scraper and is at least partially arranged in the mounting groove. The two ends of the second spring are respectively against the limit block and the connecting rod. The side of the scraper facing away from the limit block is in contact with the second filter plate.

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