Cleaning mechanism and 3D printing device applying same
By designing a cleaning mechanism for 3D printing devices, the driving part and the rotating part are used to drive the cleaning part to wipe the nozzle, which solves the problems of nozzle clogging and reduced printing accuracy in fused deposition 3D printing, and achieves cleaner cleaning. Effect.
Patent Information
- Application Number
- CN202411757963.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-29
- Publication Date
- 2025-01-21
AI Technical Summary
During the melt deposition 3D printing process, the consumable extrusion end of the nozzle is prone to residual material, resulting in nozzle blockage and printing accuracy.
A cleaning mechanism is designed, which includes a first bracket, a driving part, a rotating part and a cleaning part. Through the cooperation of the driving part and the rotating part, the cleaning part is driven to rotate to wipe the nozzle and remove residual materials.
Effectively remove the remnants around the nozzle, improve the printing accuracy, avoid the problem of the nozzle blocking, and design exquisitely without complex driving settings.
Smart Images
Figure CN119329058A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of 3D printing, and in particular to a cleaning mechanism and a 3D printing device using the same. Background Art
[0002] 3D printing technology is a rapid prototyping technology that uses digital model files as the basis, and uses special wax materials, powdered metals or plastics and other bondable materials to print layers of materials to create three-dimensional objects. Fused deposition rapid prototyping technology is one of the main 3D printing technologies. This technology heats and melts the hot-melt filaments, extrudes them from the nozzle, and deposits them on the molding platform or the previous layer of solidified material to eventually generate a physical object. Among the technologies that use plastic consumables, the most common one is fused filament deposition technology, that is, the filamentary printing material is fed into the heating head, heated and melted, and then extruded through a nozzle with a fine nozzle, so that the consumables are cooled and solidified to form a product. However, during the extrusion of the molten consumables, some consumables will remain at the consumable extrusion end of the nozzle, which may cause nozzle blockage and reduced printing accuracy. Summary of the invention
[0003] In order to solve the problems in the prior art, the embodiments of the present application provide a square cleaning mechanism and a 3D printing device using the same.
[0004] The embodiment of the present application provides a cleaning mechanism for wiping a nozzle, which comprises a first bracket, a driving member, a rotating member and a cleaning member. The driving member is slidably connected to the first bracket; the rotating member is rotatably connected to the driving member, and the rotating member is configured to rotate following the sliding of the driving member; the cleaning member is connected to the rotating member, and the cleaning member is configured to wipe the nozzle.
[0005] In one embodiment, the rotating member includes a meshing portion and a second bracket. The meshing portion is rotationally connected to the driving member through teeth; the second bracket is connected to the meshing portion, and the second bracket is spaced apart from the first bracket; and the cleaning member is connected to the second bracket.
[0006] In one embodiment, the cleaning mechanism further includes an elastic member, and the elastic member is respectively connected to the cleaning member and the second bracket; wherein the elastic member is configured to enable the cleaning member to be closer to or farther away from the second bracket.
[0007] In one embodiment, the second bracket is fixedly connected to the meshing portion, and the elastic member is arranged between the cleaning member and the second bracket; the cleaning member is connected to the second bracket through the elastic member, and the distance between the cleaning member and the second bracket is reduced due to the contraction of the elastic member, or the distance between the cleaning member and the second bracket is increased due to the expansion of the elastic member.
[0008] In one embodiment, the cleaning mechanism further includes a guide member, which is connected to the first bracket and disposed on a rotation path of the rotating member, and is used to change the rotation path of the second bracket; the second bracket is in detachable contact with the guide member.
[0009] In one embodiment, the second bracket is rotatably connected to the meshing portion, and the cleaning member and the guide member are respectively located on opposite sides of the second bracket; the guide member has an inclined guide slope, and the second bracket contacts the guide slope to rotate the second bracket, so as to move the cleaning member toward a side away from the guide member.
[0010] In one embodiment, the driving member includes first teeth arranged in a strip shape, the meshing portion includes second teeth arranged in an arc shape, and the first teeth mesh with the second teeth.
[0011] In one embodiment, the driving member further includes a first body and a first limiting column, and the first limiting column is connected to the first body; The meshing portion further includes a second body and a second limiting column, wherein the second limiting column is connected to the second body; The first limiting post is slidably arranged compared to the first bracket, the second limiting post is rotatably arranged compared to the first bracket, and the first body and the second body are connected through the first teeth and the second teeth.
[0012] In one embodiment, the first bracket is provided with spaced limit grooves and limit holes, the first limit column is slidably disposed in the limit groove, the first body is slidably connected to the first bracket, the second limit column is connected to the first bracket via the limit hole, and the meshing portion is rotatably connected to the first bracket.
[0013] In one embodiment, the first teeth are disposed on a side of the first body, and the second teeth are disposed on a side of the second body facing the first body.
[0014] In one embodiment, the driving member is slidably connected to the first bracket along a pushing direction, and the end of the driving member away from the first bracket is constructed to be acted upon by an external force, so that the driving member moves along the pushing direction and drives the rotating member to rotate along a first rotating direction.
[0015] An embodiment of the present application also provides a 3D printing device, which includes a main support, a nozzle, a driving assembly and a cleaning mechanism as described in any one of the aforementioned embodiments, wherein the cleaning mechanism and the nozzle are respectively connected to the main support, the nozzle is drivingly connected to the driving assembly, and the driving assembly drives the nozzle to contact or separate from the cleaning mechanism.
[0016] It can be understood that in the cleaning mechanism and 3D printing device of the present application, the driving member is slidably connected to the first bracket, so that the driving member can be driven (for example, pushed by the collision of the nozzle) to slide; the driving member is relatively displaced compared to the rotating member, and the driving member drives the rotating member to rotate, so that the rotating member is driven to rotate and moves closer to or farther away from the nozzle; the cleaning member is connected to the rotating member and is arranged toward the nozzle, so that the cleaning member can follow the movement of the rotating member compared to the nozzle, and then contact the nozzle to clean the nozzle; the cleaning mechanism of the present application is cleverly designed, and the driving member and the rotating member cooperate to drive the cleaning member to rotate to clear obstructions (such as residual materials), without the need for complicated driving settings, and at the same time, the rotating member drives the cleaning member to clean the nozzle in a rotating manner, so that the residual materials around the nozzle are clearer. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 A three-dimensional schematic diagram of a cleaning mechanism provided in an embodiment of the present application.
[0018] Figure 2 A schematic diagram of the status of the cleaning mechanism provided in an embodiment of the present application.
[0019] Figure 3 A schematic three-dimensional exploded view of the cleaning mechanism provided in an embodiment of the present application.
[0020] Figure 4 A three-dimensional schematic diagram of the first bracket of the cleaning mechanism provided in an embodiment of the present application.
[0021] Figure 5 A partial three-dimensional schematic diagram of the cleaning mechanism provided in an embodiment of the present application.
[0022] Figure 6 A partial three-dimensional schematic diagram of a cleaning mechanism provided in one embodiment of the present application.
[0023] Figure 7 A partial three-dimensional schematic diagram of a cleaning mechanism provided in another embodiment of the present application.
[0024] Figure 8 A schematic side view of a cleaning mechanism provided in another embodiment of the present application.
[0025] Fig. 9A three-dimensional schematic diagram of a 3D printing device provided in an embodiment of the present application.
[0026] Main component symbols Cleaning Agency 10 First bracket 11 Connection part 111 Assembly Department 112 Assembly cavity 1120 Top Plate 1121 Bottom plate 1122 Inner plate 1123 First side plate 1124 Second side plate 1125 Limiting slot 1126 Limit hole 1127 Guide strip 1128 Positioning column 1129 Driving member 12 First body 121 First tooth 122 The first limiting column 123 Guide groove 124 Guide hole 125 Rotating member 13 Meshing portion 131 Second body 1311 Arc connection end 13111 Transmission connection end 13112 Connecting cavity 13113 Second tooth 1312 The second limiting column 1313 The second bracket 132 The third subject 1321 Load-bearing wall 1322 Connection opening 1323 Clearing piece 14 Fourth Body 141 Cleaning unit 142 Elastic member 15 Guide 16 Guide slope 161 Rotating connecting piece 17 Connecting shaft 171 Reset unit 172 Driving direction F Rotation direction R 3D printing device 2 Main bracket 21 Nozzle 22 Drive assembly 23.
[0027] The following specific implementation methods will further illustrate the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION
[0028] The following description will refer to the accompanying drawings to more fully describe the content of the present application. Shown in the accompanying drawings are exemplary embodiments of the present application. However, the present application can be implemented in many different forms and should not be interpreted as being limited to the exemplary embodiments set forth herein. These exemplary embodiments are provided to make the present application thorough and complete, and to fully convey the scope of the present application to those skilled in the art. Similar reference numerals represent identical or similar components. The terms used herein are only used for the purpose of describing specific exemplary embodiments and are not intended to limit the present application. As used herein, unless the context clearly indicates otherwise, the singular forms "one", "an" and "the" are intended to also include plural forms. In addition, when used herein, "including" and / or "comprising" and / or "having", integers, steps, operations, components and / or components, but do not exclude the presence or addition of one or more other features, regions, integers, steps, operations, components and / or their groups. Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meanings as those generally understood by ordinary technicians in the field to which the present application belongs. Furthermore, unless explicitly defined herein, terms such as those defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the relevant art and the content of this application, and will not be interpreted as idealized or overly formal meanings.
[0029] Generally, 3D printing technology is a rapid prototyping technology based on digital model files, using special wax materials, powdered metals or plastics and other bondable materials to print layers of materials to create three-dimensional objects. Fused deposition rapid prototyping technology is one of the main 3D printing technologies. This technology heats and melts the hot-melt filaments, extrude them from the nozzle, and deposits them on the molding platform or the previous layer of solidified material to eventually generate a physical object. Among the technologies that use plastic consumables, the most common one is fused filament deposition technology, that is, the filamentary printing material is fed into the heating head, heated and melted, and then extruded through a nozzle with a fine nozzle, so that the consumables are cooled and solidified to form a product. However, during the extrusion of the molten consumables, some consumables will remain at the consumable extrusion end of the nozzle, which may cause nozzle blockage and reduced printing accuracy.
[0030] Correspondingly, an embodiment of the present application provides a cleaning mechanism and a 3D printing device using the same. The cleaning mechanism is used to wipe the nozzle, and includes a first bracket, a driving member, a rotating member, and a cleaning member. The driving member is slidably connected to the first bracket; the rotating member is rotatably connected to the driving member, and the rotating member is configured to rotate following the sliding of the driving member; the cleaning member is connected to the rotating member and is used to wipe the nozzle. The 3D printing device includes a bracket, a nozzle, a driving assembly, and the cleaning mechanism, the cleaning mechanism and the nozzle are respectively connected to the bracket, the nozzle is drivably connected to the driving assembly, and the driving assembly drives the nozzle to contact or separate from the cleaning mechanism.
[0031] Furthermore, in the cleaning mechanism and 3D printing device of the present application, the driving member is slidably connected to the first bracket, so that the driving member can be driven (for example, pushed by the collision of the nozzle) to slide; the driving member is relatively displaced compared to the rotating member, and the driving member drives the rotating member to rotate, so that the rotating member is driven to rotate and moves closer to or farther away from the nozzle; the cleaning member is connected to the rotating member and is arranged toward the nozzle, so that the cleaning member can follow the movement of the rotating member compared to the nozzle, and then contact the nozzle to clean the nozzle; the cleaning mechanism of the present application is cleverly designed, and the driving member and the rotating member cooperate to drive the cleaning member to rotate to clear obstructions (such as residual materials), without the need for complicated driving settings, and at the same time, the rotating member drives the cleaning member to clean the nozzle in a rotating manner, so that the residual materials around the nozzle are clearer.
[0032] Those skilled in the art can understand that "3D printing" refers to a technology that uses a digital model file as the basis, and uses powdered metal or plastic and other bondable materials to construct objects by printing layer by layer.
[0033] The following will describe exemplary embodiments in conjunction with the accompanying drawings. It should be noted that the components depicted in the reference drawings are not necessarily shown to scale; and the same or similar components will be given the same or similar reference numerals or similar technical terms.
[0034] The specific implementation methods of the present application are further described in detail below with reference to the accompanying drawings.
[0035] like Figures 1 to 3As shown, the embodiment of the present application provides a cleaning mechanism 10, which is used to clean the nozzle 22. The cleaning mechanism 10 includes a first bracket 11, a driving member 12, a rotating member 13, and a cleaning member 14. The cleaning member 14 is connected to the rotating member 13 and can move with the rotating member 13. The rotating member 13 and the driving member 12 are both installed on the first bracket 11 and can move relative to the first bracket 11. The first bracket 11 is used to enable the cleaning mechanism 10 to be installed on the 3D printing device 2.
[0036] In one embodiment, the driving member 12 is slidably connected to the first bracket 11; the rotating member 13 is rotatably connected to the driving member 12 via teeth, and the rotating member 13 is constructed to rotate by sliding with the driving member 12 so as to move closer to or away from the nozzle 22; the cleaning member 14 is connected to the rotating member 13, and the cleaning member 14 is used to be set toward the nozzle 22 and clean the nozzle 22.
[0037] It can be understood that in the cleaning mechanism 10 and the 3D printing device 2 of the present application, the driving member 12 is slidably connected to the first bracket 11, so that the driving member 12 can be driven (for example, pushed by the collision of the nozzle 22) to slide; the driving member 12 is relatively displaced compared to the rotating member 13, and the driving member 12 drives the rotating member 13 to rotate through the teeth, so that the rotating member 13 is driven to rotate and moves closer to or farther from the nozzle 22; the cleaning member 14 is connected to the rotating member 13 and is arranged toward the nozzle 22, so that the cleaning member 14 can follow the movement of the rotating member 13 compared to the nozzle 22, and then contact the nozzle 22 to clean the nozzle 22; the cleaning mechanism 10 of the present application is cleverly designed, and the cleaning member 14 can be driven to rotate for cleaning by the cooperation of the driving member 12 and the rotating member 13, without the need for a complicated driving setting, and at the same time, the rotating member 13 drives the cleaning member 14 to clean the nozzle 22 in a rotating manner, so that the removal of residual materials around the nozzle 22 is cleaner.
[0038] In one embodiment, the driving member 12 is slidably connected to the first bracket 11 along the pushing direction F, and the end of the driving member 12 away from the first bracket 11 is configured to be acted upon by an external force, so that the driving member 12 moves along the pushing direction F, and drives the rotating member 13 to rotate along the first rotation direction R, so that it can rotate to contact the nozzle 22. In a specific embodiment, the end of the driving member 12 away from the first bracket 11 is configured to be struck by the housing of the nozzle 22, so that the driving member 12 moves along the pushing direction F, and drives the rotating member 13 to rotate along the first rotation direction R, so that it can rotate to contact the nozzle 22.
[0039] In this embodiment, the nozzle 22 is configured to be relatively movable on the 3D printing device to achieve the 3D printing process, and the cleaning mechanism 10 is configured to be relatively fixed on the 3D printing device to avoid interference with the nozzle 22. The end of the driving member 12 of the cleaning mechanism 10 away from the first bracket 11 is configured to be located outside the cleaning mechanism 10, so that the driving member 12 can be contacted and pushed by the nozzle 22, and the cleaning mechanism 10 can be driven to move without complicated driving.
[0040] It can be understood that after the nozzle 22 contacts the driving member 12, it continues to move in the pushing direction F and pushes the driving member 12, and the driving member 12 further slides relative to the first bracket 11 in the pushing direction F. The rotating member 13 is connected to the driving member 12 through teeth, and the driving member 12 slides in the pushing direction F, thereby moving relative to the rotating member 13, and the relative movement of the driving member 12 in the pushing direction F is converted into the rotation of the rotating member 13 in the rotation direction R through the teeth, and the rotating member 13 rotates in the rotation direction R and rotates the end away from the meshing portion 131 toward the location of the nozzle 22. In the process of pushing the driving member 12, the nozzle 22 must be arranged close to the cleaning mechanism 10, and the rotating member 13 drives the cleaning member 14 to rotate, so that the cleaning member 14 can move to contact the nozzle 22, thereby cleaning the nozzle 22 and removing the residual material at the discharge port of the nozzle 22. The rotation cleaning method often has a better cleaning effect than the general direct cleaning. It should be explained that the driving member 12 can be pushed along the pushing direction F until it is stopped by the first bracket 11, and the rotating member 13 can be rotated by a certain angle (for example, about 90°) along the rotating direction R compared to the driving member 12, so that the cleaning member 14 can be in a direction roughly parallel to the driving member 12 along the pushing direction F; wherein the driving member 12 can be pushed by the nozzle 22 or other components arranged on the nozzle 22 (to avoid interference with the cleaning mechanism 10).
[0041] Further integration Figure 3 and Figure 4 As shown, in one embodiment, the driving member 12 includes first teeth 122 arranged in a strip shape, and the meshing portion 131 includes second teeth 1312 arranged in an arc shape, and the first teeth 122 mesh with the second teeth 1312 .
[0042] In this embodiment, the first teeth 122 arranged in a strip shape are extended along the pushing direction F, and the protrusions and depressions of the multiple teeth on the first teeth 122 are arranged roughly corresponding to the direction perpendicular to the pushing direction F. The first teeth 122 are arranged on one side of the driving member 12 and are arranged toward the side where the rotating member 13 is located. The second teeth 1312 are arranged in an arc shape, and the second teeth 1312 are located on the outer side of one end of the rotating member 13. The second teeth 1312 are arranged roughly in a semicircular shape. During the rotation of the rotating member 13, at least part of the second teeth 1312 is arranged opposite to the driving member 12 and meshes with the first teeth 122, and the remaining part of the second teeth 1312 is separated from the first teeth 122, and the part of the second teeth 1312 that contacts the first teeth 122 changes with the rotation.
[0043] In one embodiment, the first bracket 11 includes a connecting portion 111 and an assembly portion 112 which are connected to each other, and the assembly portion 112 is arranged at one end of the connecting portion 111. The assembly portion 112 is used to connect with the driving member 12 and the rotating member 13, and the assembly portion 112 is provided with an assembly cavity 1120 for accommodating the driving member 12 and the rotating member 13; the connecting portion 111 is used to connect with the main bracket 21 of the 3D printing device 2, and the other end of the connecting portion 111 away from the assembly portion 112 is provided with an assembly hole for connecting with the main bracket 21 of the 3D printing device 2.
[0044] In one embodiment, the assembly portion 112 includes a top plate 1121, a bottom plate 1122, an inner plate 1123, a first side plate 1124 and a second side plate 1125. The top plate 1121 and the bottom plate 1122 are arranged opposite to each other, the first side plate 1124 and the second side plate 1125 are arranged at intervals, and the inner plate 1123 is connected to the top plate 1121, the bottom plate 1122, the first side plate 1124 and the second side plate 1125 at the same time. The other side of the assembly portion 112 that is spaced from the inner plate 1123 along the pushing direction F is an open structure, so that the internal space of the assembly cavity 1120 is exposed.
[0045] In this embodiment, the top plate 1121 is provided with a through-set limiting groove 1126 and a limiting hole 1127, the limiting groove 1126 is roughly in the shape of a long strip extending along the pushing direction F, and the limiting hole 1127 is roughly in the shape of a circle, and the bottom plate 1122 is provided with another through-set limiting hole 1127, the other limiting hole 1127 is also roughly in the shape of a circle, and the two limiting holes 1127 are provided correspondingly. The bottom plate 1122 is also provided with a guide bar 1128 protruding toward the inside of the assembly cavity 1120, and the guide bar 1128 extends along the pushing direction F. Among them, the limiting groove 1126 and the guide bar 1128 are provided corresponding to the position where the driving member 12 is located, and are used to cooperate with the driving member 12, and the two limiting holes 1127 are provided corresponding to the position where the rotating member 13 is located, and are used to cooperate with the rotating member 13.
[0046] In this embodiment, the length direction of the first side plate 1124 roughly corresponds to the pushing direction F. The first side plate 1124 is connected to the top plate 1121, the bottom plate 1122 and the inner plate 1123, and is used to cooperate with each other to limit the driving member 12. The second side plate 1125 is connected to the top plate 1121, the bottom plate 1122 and the inner plate 1123. The second side plate 1125 and the first side plate 1124 are arranged on the same side of the inner plate 1123. The length of the second side plate 1125 along the pushing direction F is shorter than the length of the first side plate 1124 along the pushing direction F. The portion of the rotating member 13 arranged in the assembly cavity 1120 is located between the top plate 1121, the bottom plate 1122 and the first side plate 1124.
[0047] In this embodiment, a positioning column 1129 is provided on the inner plate 1123 and is protruded toward the inside of the assembly cavity 1120 . The positioning column 1129 is arranged corresponding to the position of the driving member 12 for cooperating with the driving member 12 .
[0048] Further integration Figure 3 and Figure 5 As shown, in one embodiment, the driving member 12 also includes a first main body 121 and a first limiting column 123, the first tooth 122 is arranged on one side of the first main body 121, and the first limiting column 123 is connected to the first main body 121; the first limiting column 123 can be movably arranged in the limiting groove 1126, and the first main body 121 is slidably connected to the first bracket 11.
[0049] In this embodiment, the first body 121 is generally in the shape of a cuboid, and has a plurality of faces, which are respectively in contact with the top plate 1121, the bottom plate 1122, and the first side plate 1124. A guide groove 124 is provided on the side of the first body 121 that is in contact with the bottom plate 1122, and the guide groove 124 is used to accommodate the positioning column 1129. The side of the first body 121 that is in contact with the top plate 1121 is connected to the first limiting column 123, which is protruded relative to the first body 121, and the first limiting column 123 is movably disposed in the guide groove 124 along the pushing direction F. The first body 121 is provided with a guide hole 125 on one side thereof for contacting the first side plate 1124, the length direction of which corresponds to the pushing direction F. The guide hole 125 is provided corresponding to the positioning column 1129 on the inner plate 1123. The guide hole 125 can accommodate and cooperate with the first side plate 1124 to define a reset member (not shown). One end of the reset member is sleeved on the positioning column 1129, and the other end of the reset member is abutted against the first body 121, for pushing the driving member 12 to reset. The first body 121 is provided with a first tooth 122 on one side away from the first side plate 1124, so that the first tooth 122 can be arranged toward the rotating member 13.
[0050] It can be understood that the driving member 12 is arranged in the assembly cavity 1120 along the pushing direction F, one end of the driving member 12 contacts the nozzle 22, and the driving member 12 slides along the pushing direction F relative to the assembly portion 112 under the cooperation of the guide bar 1128 and the guide groove 124 and / or the cooperation of the first limiting column 123 and the limiting groove 1126, and the driving member 12 and the rotating member 13 are relatively displaced. As the driving member 12 moves toward the inner plate 1123 along the pushing direction F, the reset member located between the inner plate 1123 and the first body 121 is compressed, and when the force applied to the driving member 12 by the nozzle 22 is reduced or removed, the driving member 12 is reset under the elastic force of the reset member, and correspondingly, the rotating member 13 is also reset following the reset of the driving member 12.
[0051] In one embodiment, the rotating member 13 includes a meshing portion 131 and a second bracket 132. The meshing portion 131 is rotatably connected to the driving member 12 through the teeth, the second bracket 132 is connected to the meshing portion 131, the second bracket 132 is spaced apart from the first bracket 11, and the cleaning member 14 is connected to the second bracket 132. It can be understood that the meshing portion 131 and the second bracket 132 can be integrally arranged, or separately arranged and connected to each other. Regardless of the connection method adopted by the meshing portion 131 and the second bracket 132, the second bracket 132 can follow the meshing portion 131 to move and drive the cleaning member 14 to move.
[0052] It can be understood that the second bracket 132 is spaced apart from the first bracket 11, which means that the second bracket 132 is connected to the driving member 12 provided on the first bracket 11 through the meshing portion 131, and the second bracket 132 is spaced apart from the first bracket 11 without contacting it, and when the second bracket 132 is driven to rotate, the second bracket 132 is configured to always maintain a spaced apart from the first bracket 11 without contacting it, so as to avoid interference with the rotation of the rotating member 13 due to the contact between the second bracket 132 and the first bracket 11.
[0053] In one embodiment, the meshing portion 131 further includes a second body 1311 and a second limiting post 1313. The second teeth 1312 are disposed on the second body 1311 facing the first body 121, the second limiting post 1313 is connected to the second body 1311, the second limiting post 1313 is connected to the first bracket 11 via the limiting hole 1127, and the meshing portion 131 is rotatably connected to the first bracket 11.
[0054] In this embodiment, the second body 1311 includes an arc-shaped connecting end 13111 and a transmission connecting end 13112, and the arc-shaped connecting end 13111 and the transmission connecting end 13112 are connected to each other and are integrally arranged. The arc-shaped connecting end 13111 is located on the side of the second body 1311 close to the driving member 12, and the arc-shaped connecting end 13111 is provided with a second tooth 1312 on the side facing the driving member 12, and the second tooth 1312 is arranged at intervals along the arc-shaped side surface of the arc-shaped connecting end 13111; the arc-shaped connecting end 13111 is used to be arranged in the assembly cavity 1120, and the second limiting column 1313 is arranged through the arc-shaped connecting end 13111, and the two opposite ends of the second limiting column 1313 can be respectively arranged in the two limiting holes 1127, and the meshing portion 131 can rotate around the rotation direction R with the second limiting column 1313 as the axis. A side of the arc-shaped connecting end 13111 away from the second tooth 1312 is connected to the transmission connecting end 13112 , and a side of the transmission connecting end 13112 away from the arc-shaped connecting end 13111 is connected to the second bracket 132 .
[0055] In this embodiment, the second bracket 132 is connected to the transmission connection end 13112 and extends toward the side away from the arc connection end 13111. The second bracket 132 is used to carry the cleaning member 14 and enable the cleaning member 14 to maintain a suitable relative position with the nozzle 22 to achieve cleaning. The relative position between the cleaning member 14 and the nozzle 22 can be adjusted by adjusting the length or shape of the second bracket 132. The second bracket 132 includes a third body 1321 and a bearing wall 1322. The second bracket 132 can be a sheet metal part, and the third body 1321 and the bearing wall 1322 can be integrally connected. The third body 1321 is configured to be fixedly connected or movably connected to the transmission connection end 13112; the bearing wall 1322 is used to carry the cleaning member 14. The bearing wall 1322 is protruded toward the side close to the nozzle 22 compared to the third body 1321 to prevent the third body 1321 from interfering with the nozzle 22.
[0056] In one embodiment, the cleaning member 14 includes a fourth body 141 and a cleaning portion 142, the fourth body 141 is connected to the bearing wall 1322, and the cleaning portion 142 is disposed on a side of the fourth body 141 away from the bearing wall 1322. The fourth body 141 is used to connect the cleaning member 14 to the rotating member 13, and the cleaning portion 142 can have a pattern consisting of a plurality of convex columns, so that the cleaning portion 142 has an uneven structure, thereby cleaning the nozzle 22. In other embodiments, the cleaning portion 142 can also be a grid-shaped or other shaped pattern, or the cleaning portion 142 can be a cylindrical structure that can rotate and has a sticky surface, and the residual material can be removed by contact adhesion.
[0057] It is understandable that the fourth body 141 can be a rubber sheet, which has a certain adhesion ability and / or elasticity; the cleaning portion 142 can be a rubber protrusion, which has both a large friction force to make cleaning cleaner and a certain flexibility to avoid damage to the nozzle 22.
[0058] Further integration Figure 6 As shown, in one embodiment, the cleaning mechanism 10 further includes an elastic member 15, which is respectively connected to the cleaning member 14 and the second bracket 132. The elastic member 15 is configured to enable the cleaning member 14 to be closer to or farther from the second bracket 132.
[0059] In one embodiment, the second bracket 132 is fixedly connected to the meshing portion 131, and the elastic member 15 is disposed between the cleaning member 14 and the second bracket 132. The cleaning member 14 is connected to the second bracket 132 through the elastic member 15, and the distance between the cleaning member 14 and the second bracket 132 decreases due to the contraction of the elastic member 15 and increases due to the expansion of the elastic member 15.
[0060] In this embodiment, the elastic member 15 is a spring sheet, and the elastic member 15 is arranged between the fourth body 141 and the bearing wall 1322. It can be understood that the position of the cleaning member 14 is constructed to be slightly higher than the discharge end of the lower part of the nozzle 22. When the cleaning member 14 contacts the discharge end of the lower part of the nozzle 22, the cleaning member 14 and the nozzle 22 will squeeze each other to increase the pressure between the cleaning member 14 and the nozzle 22, thereby increasing the friction force and improving the cleaning effect. At the same time, the elastic member 15 arranged between the cleaning member 14 and the bearing wall 1322 can provide an escape space for the cleaning member 14. When the nozzle 22 squeezes the cleaning member 14, the elastic member 15 shrinks and the thickness decreases, so that the cleaning member 14 can avoid the nozzle 22 to avoid getting stuck or bruised. At the same time, the deformed elastic member 15 can also exert a force on the cleaning member 14 toward the nozzle 22, so that the cleaning member 14 can be against the nozzle 22 to improve the cleaning effect.
[0061] In other implementations, the elastic member 15 may also be other elastic structures that can be stretched, avoided and provided with support, such as a rubber sheet.
[0062] Further integration Figure 7 and Figure 8 As shown, in another embodiment, the cleaning mechanism 10 further includes a guide member 16, which is connected to the first bracket 11 and is disposed on the rotation path of the rotating member 13, and the guide member 16 is used to change the rotation path of the second bracket 132. The second bracket 132 is detachably contacted with the guide member 16, so that the second bracket 132 is guided by the guide member 16 to drive the cleaning member 14 toward the nozzle 22.
[0063] In one embodiment, the second bracket 132 is rotatably connected to the meshing portion 131, and the cleaning member 14 and the guide member 16 are respectively located on opposite sides of the second bracket 132. The guide member 16 has an inclined guide slope 161, and the second bracket 132 contacts the guide slope 161 to rotate the second bracket 132, so as to move the cleaning member 14 toward the side away from the guide member 16. The guide slope 161 extends from the side close to the bottom plate 1122 of the first bracket 11 to the side close to the top plate 1121, and the guide slope 161 can be a rotating extension slope corresponding to the rotation direction R, so that the second bracket 132 is lifted more naturally, and the cleaning member 14 has a better cleaning effect on the nozzle 22.
[0064] In this embodiment, the meshing portion 131 and the second bracket 132 are connected by a rotating connection member 17, so that the second bracket 132 can rotate relative to the meshing portion 131. A connecting cavity 13113 is provided on the transmission connection end 13112 of the meshing portion 131, and a connecting opening 1323 is provided on the third body 1321 of the second bracket 132. The rotating connection member 17 includes a connecting shaft 171, which is arranged through the connecting opening 1323 and further accommodated in the connecting cavity 13113, so that the meshing portion 131 and the second bracket 132 are rotatably connected, and the second bracket 132 can rotate relative to the meshing portion 131 with the connecting shaft 171 as the axis.
[0065] Furthermore, the rotating connecting member 17 may further include a reset portion 172, which is sleeved on the outer side of the connecting shaft 171 and is used to reset the second bracket 132. In this embodiment, the reset portion 172 may be a torsion spring, which is compressed and deformed after the second bracket 132 rotates relative to the meshing portion 131, and releases elastic force to reset the second bracket 132 after the force that rotates the second bracket 132 is removed. It can be understood that the reset portion 172 can help improve the reset accuracy of the second bracket 132, and at the same time, the second bracket 132 can also be reset under the action of gravity to omit the reset portion 172.
[0066] It can be understood that during the rotation of the rotating member 13 along the rotation direction R, the side of the second bracket 132 away from the cleaning member 14 abuts against the guide slope 161, and the guide slope 161 guides the side of the second bracket 132 provided with the cleaning member 14 to tilt toward the nozzle 22 during the rotation process, so that the cleaning member 14 abuts against the nozzle 22. The cleaning member 14 and the nozzle 22 will squeeze each other to increase the pressure between the cleaning member 14 and the nozzle 22, thereby increasing the friction and improving the cleaning effect.
[0067] Further integration Fig. 9As shown, the embodiment of the present application further provides a 3D printing device 2, which includes a main support 21, a nozzle 22, a driving assembly 23 and a cleaning mechanism 10 as described in any of the above embodiments. The cleaning mechanism 10 and the nozzle 22 are respectively connected to the main support 21, and the nozzle 22 is drivingly connected to the driving assembly 23, and the driving assembly 23 drives the nozzle 22 to contact or separate from the cleaning mechanism 10.
[0068] It is understandable that the main support 21 may be a gantry structure including a Z-axis, the cleaning mechanism 10 is fixed to the main support 21 , and the driving assembly 23 drives the module where the nozzle 22 is located to collide with the driving member 12 .
[0069] In the above, the specific implementation of the present application is described with reference to the accompanying drawings. However, those skilled in the art will appreciate that various changes and substitutions may be made to the specific implementation of the present application without departing from the spirit and scope of the present application. These changes and substitutions are all within the scope defined by the present application.
Claims
1. A cleaning mechanism for wiping a nozzle, characterized in that: include: First bracket; A driving member, which is slidably connected to the first bracket; A rotating member, which is rotatably connected to the driving member, and the rotating member is configured to rotate by sliding along with the driving member; A cleaning member is connected to the rotating member, and the cleaning member is configured to wipe the nozzle.
2. The cleaning mechanism according to claim 1, characterized in that: The rotating member comprises: A meshing portion, which is rotationally connected to the driving member through teeth; a second bracket connected to the engaging portion, the second bracket being spaced apart from the first bracket; The cleaning member is connected to the second bracket.
3. The cleaning mechanism according to claim 2, characterized in that: Also includes: an elastic member, which is respectively connected to the cleaning member and the second bracket; Wherein, the elastic member is configured to enable the cleaning member to move closer to or farther away from the second bracket.
4. The cleaning mechanism according to claim 3, characterized in that: The second bracket is fixedly connected to the meshing portion, and the elastic member is arranged between the cleaning member and the second bracket; the cleaning member is connected to the second bracket through the elastic member, and the distance between the cleaning member and the second bracket is reduced due to the contraction of the elastic member, or the distance between the cleaning member and the second bracket is increased due to the expansion of the elastic member.
5. The cleaning mechanism according to claim 2, characterized in that: Also includes: a guide member connected to the first bracket and arranged on a rotation path of the rotating member, wherein the guide member is used to change the rotation path of the second bracket; The second bracket is in detachable contact with the guide member.
6. The cleaning mechanism according to claim 5, characterized in that: The second bracket is rotatably connected to the meshing portion, and the cleaning member and the guide member are respectively located on opposite sides of the second bracket; the guide member has an inclined guide slope, and the second bracket contacts the guide slope to rotate the second bracket, so as to move the cleaning member toward a side away from the guide member.
7. The cleaning mechanism according to claim 2, characterized in that: The driving member includes first teeth arranged in a strip shape, the meshing portion includes second teeth arranged in an arc shape, and the first teeth mesh with the second teeth.
8. The cleaning mechanism according to claim 7, characterized in that: The driving member further comprises a first main body and a first limiting column, wherein the first limiting column is connected to the first main body; The meshing portion further includes a second body and a second limiting column, wherein the second limiting column is connected to the second body; The first limiting post is slidably arranged compared to the first bracket, the second limiting post is rotatably arranged compared to the first bracket, and the first body and the second body are connected through the first teeth and the second teeth.
9. The cleaning mechanism according to claim 8, characterized in that: The first bracket is provided with spaced limiting grooves and limiting holes, the first limiting column is slidably arranged in the limiting groove, the first body is slidably connected to the first bracket, the second limiting column is connected to the first bracket via the limiting hole, and the meshing portion is rotatably connected to the first bracket.
10. The cleaning mechanism according to claim 8, characterized in that: The first teeth are arranged on one side of the first body, and the second teeth are arranged on a side of the second body facing the first body.
11. The cleaning mechanism according to claim 1, characterized in that: The driving member is slidably connected to the first bracket along a pushing direction, and one end of the driving member away from the first bracket is configured to be acted upon by an external force, so that the driving member moves along the pushing direction and drives the rotating member to rotate along a first rotating direction.
12. A 3D printing device, characterized in that: It includes a main support, a nozzle, a driving assembly and a cleaning mechanism as described in any one of claims 1 to 11, wherein the cleaning mechanism and the nozzle are respectively connected to the main support, the nozzle is drivingly connected to the driving assembly, and the driving assembly drives the nozzle to contact or separate from the cleaning mechanism.