Cleaning mechanism and 3D printing device applying same

Abstract

The embodiment of the utility model provides a cleaning mechanism and a 3D printing device applying the same. The cleaning mechanism is used for wiping a nozzle and comprises a first support, a driving part, a rotating part and a removing part. The driving piece is connected with the first bracket in a sliding manner; the rotating piece is rotationally connected with the driving piece, and the rotating piece is configured to rotate along with sliding of the driving piece; and the cleaning piece is connected with the rotating piece, and the cleaning piece is used for wiping the nozzle. The 3D printing device comprises a support, a nozzle, a driving assembly and the cleaning mechanism, the cleaning mechanism and the nozzle are connected with the support, the nozzle is in driving connection with the driving assembly, and the driving assembly drives the nozzle to make contact with or be separated from the cleaning mechanism.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of 3D printing, in particular to a cleaning mechanism and a 3D printing device applying the same. BACKGROUND

[0002] 3D printing technology is a rapid prototyping technology which uses special wax material, powdered metal or plastic and other adhesive materials to manufacture three-dimensional objects through printing layer by layer based on digital model files. Fused deposition modeling technology is one of the main 3D printing technologies. In this technology, hot melt material is heated and melted, then extruded from the nozzle to deposit on the forming platform or the previous layer of solidified material, and finally generate a real object. In the technology using plastic consumables, the common one is fused deposition technology, that is, the filament printing material is sent into the heating head, then heated and melted, and then extruded through a micro nozzle, so that the consumables cool and solidify to form a product. However, during the extrusion of the consumables, part of the consumables will be left on the consumable extrusion end of the nozzle, which may cause nozzle blockage and decrease printing accuracy. CONTENT OF THE UTILITY MODEL

[0003] In order to solve the problems in the prior art, the embodiments of the present application provide a cleaning mechanism and a 3D printing device applying the same.

[0004] The embodiments of the present application provide a cleaning mechanism for wiping the nozzle, which comprises a first support, a driving member, a rotating member and a cleaning member. The driving member is in sliding connection with the first support; the rotating member is in rotational connection with the driving member, and the rotating member is configured to rotate following the sliding of the driving member; and the cleaning member is connected with the rotating member, and the cleaning member is configured to wipe the nozzle.

[0005] In an embodiment, the rotating member comprises an engaging part and a second support. The engaging part is in rotational connection with the driving member through teeth; the second support is connected with the engaging part, and the second support is arranged in spaced relation with the first support; and the cleaning member is connected with the second support.

[0006] In an embodiment, the cleaning mechanism further comprises an elastic member, and the elastic member is connected with the cleaning member and the second support respectively; wherein the elastic member is configured to enable the cleaning member to approach or move away from the second support.

[0007] In an embodiment, the second support is fixedly connected with the engaging part, and the elastic member is arranged between the cleaning member and the second support; the cleaning member is connected with the second support through the elastic member, and the distance between the cleaning member and the second support is reduced due to the contraction of the elastic member, or the distance between the cleaning member and the second support is increased due to the expansion of the elastic member.

[0008] In one embodiment, the cleaning mechanism further comprises a guide connected to the first support and arranged on the rotation path of the rotating member, the guide being configured to change the rotation path of the second support; the second support is in separable contact with the guide.

[0009] In one embodiment, the second support is rotationally connected to the engaging portion, and the cleaning member and the guide are respectively arranged on two opposite sides of the second support; the guide has an inclined guide slope, and the contact between the second support and the guide slope causes the rotation of the second support, so as to move the cleaning member away from the guide.

[0010] In one embodiment, the driving member comprises a first tooth arranged in a strip shape, and the engaging portion comprises a second tooth arranged in an arc shape, and the first tooth is engaged with the second tooth.

[0011] In one embodiment, the driving member further comprises a first body and a first limiting column, and the first limiting column is connected to the first body;

[0012] The engaging portion further comprises a second body and a second limiting column, and the second limiting column is connected to the second body;

[0013] The first limiting column is arranged in sliding mode relative to the first support, and the second limiting column is arranged in rotation mode relative to the first support, and the first body and the second body are connected through the first tooth and the second tooth.

[0014] In one embodiment, the first support is provided with a spaced limiting slot and a limiting hole, the first limiting column is arranged in sliding mode in the limiting slot, the first body is in sliding connection with the first support, the second limiting column is connected to the first support through the limiting hole, and the engaging portion is in rotational connection with the first support.

[0015] In one embodiment, the first tooth is arranged on one side of the first body, and the second tooth is arranged on the side of the second body facing the first body.

[0016] In one embodiment, the driving member is in sliding connection with the first support along a pushing direction, and one end of the driving member away from the first support is configured to be acted on by an external force, so as to move the driving member along the pushing direction and drive the rotating member to rotate along a first rotation direction.

[0017] The embodiment of the present application also provides a 3D printing device, which comprises a main support, a nozzle, a driving assembly and the cleaning mechanism as described in any one of the preceding embodiments, the cleaning mechanism and the nozzle are connected with the main support respectively, the nozzle is drivingly connected with the driving assembly, and the driving assembly drives the nozzle to contact or separate from the cleaning mechanism.

[0018] It can be understood that, in the cleaning mechanism and the 3D printing device, the driving member is slidingly connected with the first support, so that the driving member can be driven (for example, pushed by the nozzle) to slide; the driving member is relatively displaced compared with the rotating member, the driving member drives the rotating member to rotate, so that the rotating member is relatively close to or away from the nozzle after being driven to rotate; the cleaning member is connected with the rotating member and arranged towards the nozzle, so that the cleaning member can move with the rotating member relative to the nozzle, and then contact the nozzle to clean the nozzle; the cleaning mechanism is designed to be compact, the driving member and the rotating member are matched to drive the cleaning member to rotate to clean the shielding object (for example, residual material), without complex driving arrangement; meanwhile, the rotating member drives the cleaning member to clean the nozzle in a rotating manner, so that the residual material around the nozzle is cleaned more completely. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 A perspective view of the cleaning mechanism provided by the embodiment of the present application is shown.

[0020] Figure 2 A state view of the cleaning mechanism provided by the embodiment of the present application is shown.

[0021] Figure 3 A perspective exploded view of the cleaning mechanism provided by the embodiment of the present application is shown.

[0022] Figure 4 A perspective view of the first support of the cleaning mechanism provided by the embodiment of the present application is shown.

[0023] Figure 5 A partial perspective view of the cleaning mechanism provided by the embodiment of the present application is shown.

[0024] Figure 6 A partial perspective view of the cleaning mechanism provided by the embodiment of the present application is shown.

[0025] Figure 7 A partial perspective view of the cleaning mechanism provided by another embodiment of the present application is shown.

[0026] Figure 8 A side view of the cleaning mechanism provided by another embodiment of the present application is shown.

[0027] Figure 9A three-dimensional schematic view of a 3D printing device provided by the embodiments of the present application.

[0028] Main element symbol explanation

[0029] Cleaning mechanism 10

[0030] First support 11

[0031] Connecting portion 111

[0032] Assembly portion 112

[0033] Assembly cavity 1120

[0034] Top plate 1121

[0035] Bottom plate 1122

[0036] Inner plate 1123

[0037] First side plate 1124

[0038] Second side plate 1125

[0039] Limiting groove 1126

[0040] Limiting hole 1127

[0041] Guide bar 1128

[0042] Positioning column 1129

[0043] Driving member 12

[0044] First main body 121

[0045] First tooth 122

[0046] First limiting column 123

[0047] Guide groove 124

[0048] Guide hole 125

[0049] Rotating member 13

[0050] Engaging portion 131

[0051] Second main body 1311

[0052] Arc-shaped connecting end 13111

[0053] Transmission connecting end 13112

[0054] Connecting cavity 13113

[0055] Second tooth 1312

[0056] Second limiting column 1313

[0057] Second support 132

[0058] Third main body 1321

[0059] Bearing wall 1322

[0060] Connecting opening 1323

[0061] Cleaning member 14

[0062] Fourth main body 141

[0063] Cleaning part 142

[0064] Elastic member 15

[0065] Guide member 16

[0066] Guide inclined surface 161

[0067] Rotary connecting member 17

[0068] Connecting shaft 171

[0069] Reset part 172

[0070] Pushing direction F

[0071] Rotating direction R

[0072] 3D printing device 2

[0073] Main support 21

[0074] Nozzle 22

[0075] Drive assembly 23.

[0076] The following specific embodiments will further illustrate the present application in conjunction with the above figures. Specific embodiments

[0077] The following description will refer to the accompanying drawings, which are meant to exemplify embodiments of the application. The application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the application to those skilled in the art. Like reference numerals refer to like components throughout the specification. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Furthermore, to the extent that the terms "including", "includes", "having", "has", "a", "an", "contains", "containing", "including", "includes", "including", "comprising", "comprise", "comprises" or "comprised of" are used in the specification and / or the claims, such terms are not to be interpreted in an exclusionary sense. Rather, they are to be interpreted in an inclusive sense, i.e., to include one or more elements, steps, features, components, and / or groups thereof, but not excluding others. Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and the present disclosure, and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

[0078] Generally, 3D printing technology is a rapid prototyping technology that uses special wax material, powdered metal or plastic and other adhesive materials to manufacture three-dimensional objects by printing layer by layer based on a digital model file. Fused deposition rapid prototyping technology is one of the main 3D printing technologies. In this technology, hot melt material is heated and melted, then extruded from the nozzle and deposited on the forming platform or the previously solidified material, and finally generates a real object. In the technology using plastic consumables, the common one is fused deposition technology, that is, the filament printing material is sent into the heating head, then heated and melted, and then extruded through a micro nozzle, so that the consumables cool and solidify to form a product. However, during the extrusion of the consumables, part of the consumables will be left on the consumable extrusion end of the nozzle, which may cause nozzle blockage and decrease printing accuracy.

[0079] Correspondingly, the embodiment of the present application provides a cleaning mechanism and a 3D printing device using the same. The cleaning mechanism is used for wiping a nozzle, and comprises a first support, a driving member, a rotating member and a cleaning member. The driving member is in sliding connection with the first support; the rotating member is in rotational connection with the driving member, and is configured to rotate following the sliding of the driving member; and the cleaning member is connected with the rotating member and used for wiping the nozzle. The 3D printing device comprises a support, a nozzle, a driving assembly and the cleaning mechanism. The cleaning mechanism and the nozzle are connected with the support respectively, the nozzle is in driving connection with the driving assembly, and the driving assembly drives the nozzle to contact or separate from the cleaning mechanism.

[0080] Further, the cleaning mechanism and the 3D printing device of the present application, the driving member is in sliding connection with the first support, so that the driving member can be driven (e.g. pushed by the nozzle) to slide; the driving member is relatively displaced compared with the rotating member, the driving member drives the rotating member to rotate, so that the rotating member is relatively close to or far away from the nozzle after being driven to rotate; and the cleaning member is connected with the rotating member and arranged towards the nozzle, so that the cleaning member can move compared with the nozzle following the rotating member, and then contact the nozzle to clean the nozzle. The cleaning mechanism of the present application is designed ingeniously, and the driving member and the rotating member can drive the cleaning member to rotate to remove the shielding object (e.g. residual material) without complex driving arrangement. Meanwhile, the rotating member drives the cleaning member to clean the nozzle in a rotating manner, so that the residual material around the nozzle can be removed more cleanly.

[0081] Those skilled in the art can understand that "3D printing" refers to a technology for constructing an object through layer-by-layer printing based on a digital model file, using powder-like metal or plastic and other adhesive materials.

[0082] The following description will be made to exemplary embodiments in conjunction with the accompanying drawings. It should be noted that the components depicted in the accompanying drawings are not necessarily shown in scale; and the same or similar components will be assigned the same or similar reference numerals or similar technical terms.

[0083] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings.

[0084] As Figures 1 to 3As shown, the embodiment of the present application provides a cleaning mechanism 10 for cleaning the nozzle 22. The cleaning mechanism 10 comprises a first support 11, a driving member 12, a rotating member 13 and a cleaning member 14. The cleaning member 14 is connected with the rotating member 13 and can move with the rotating member 13, the rotating member 13 and the driving member 12 are both mounted on the first support 11 and can move relative to the first support 11, and the first support 11 is used for mounting the cleaning mechanism 10 on the 3D printing device 2.

[0085] In an embodiment, the driving member 12 is slidingly connected with the first support 11, the rotating member 13 is toothedly connected with the driving member 12, the rotating member 13 is configured to rotate following the sliding of the driving member 12, so as to move close to or away from the nozzle 22, and the cleaning member 14 is connected with the rotating member 13 and is used for being arranged towards the nozzle 22 and cleaning the nozzle 22.

[0086] 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 slidingly connected with the first support 11, so that the driving member 12 can be driven (e.g. pushed by the nozzle 22) to slide, the driving member 12 is relatively displaced relative to the rotating member 13, 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 then moves close to or away from the nozzle 22, the cleaning member 14 is connected with the rotating member 13 and arranged towards the nozzle 22, so that the cleaning member 14 can move with the rotating member 13 relative to the nozzle 22 and then contact the nozzle 22 to clean the nozzle 22, the cleaning mechanism 10 of the present application is designed ingeniously, the driving member 12 and the rotating member 13 are matched to drive the cleaning member 14 to rotate and clean, without complex driving arrangement, and meanwhile, the rotating member 13 drives the cleaning member 14 to rotate to clean the nozzle 22, so that the residual material around the nozzle 22 is cleaned more thoroughly.

[0087] In an embodiment, the driving member 12 is slidingly connected with the first support 11 along the pushing direction F, and an end of the driving member 12 away from the first support 11 is configured to be acted on by 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 rotating direction R, so that the rotating member 13 can rotate to contact the nozzle 22. In a specific embodiment, the end of the driving member 12 away from the first support 11 is configured to be hit by the shell 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 rotating direction R, so that the rotating member 13 can rotate to contact the nozzle 22.

[0088] In the embodiment, the nozzle 22 is configured to be relatively movable on the 3D printing device to realize the 3D printing process, and the cleaning mechanism 10 is configured to be relatively fixed in position on the 3D printing device to avoid interference with the nozzle 22. The driving member 12 of the cleaning mechanism 10 is configured to be located outside the cleaning mechanism 10 at an end away from the first support 11, so that the driving member 12 can be pushed by the nozzle 22 to move the cleaning mechanism 10 without complex driving.

[0089] It can be understood that, after the nozzle 22 contacts the driving member 12, the nozzle 22 continues to move in the pushing direction F and pushes the driving member 12, and the driving member 12 further slides in the pushing direction F relative to the first support 11. The driving member 12 is in relative motion with the rotating member 13 by sliding in the pushing direction F, and the relative motion of the driving member 12 in the pushing direction F is converted into the rotation of the rotating member 13 in the rotating direction R through the teeth, and the rotating member 13 rotates in the rotating direction R and rotates the end thereof away from the engaging portion 131 towards the position of the nozzle 22. The nozzle 22 is necessarily arranged close to the cleaning mechanism 10 during pushing of the driving member 12, the rotating member 13 drives the cleaning member 14 to rotate, so that the cleaning member 14 can be moved to contact the nozzle 22 to clean the nozzle 22 and remove the residual material at the discharge port of the nozzle 22. The rotating cleaning method has better cleaning effect than the general direct cleaning method. It should be explained that the driving member 12 can be pushed in the pushing direction F to be stopped by the first support 11, and the rotating member 13 can rotate in the rotating direction R relative to the driving member 12 by a certain angle (for example, about 90°), so that the cleaning member 14 can be arranged in a direction substantially parallel to the driving direction F of the driving member 12; 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).

[0090] Further combining Figure 3 and Figure 4 It can be understood that, after the nozzle 22 contacts the driving member 12, the nozzle 22 continues to move in the pushing direction F and pushes the driving member 12, and the driving member 12 further slides in the pushing direction F relative to the first support 11. The driving member 12 is in relative motion with the rotating member 13 by sliding in the pushing direction F, and the relative motion of the driving member 12 in the pushing direction F is converted into the rotation of the rotating member 13 in the rotating direction R through the teeth, and the rotating member 13 rotates in the rotating direction R and rotates the end thereof away from the engaging portion 131 towards the position of the nozzle 22. The nozzle 22 is necessarily arranged close to the cleaning mechanism 10 during pushing of the driving member 12, the rotating member 13 drives the cleaning member 14 to rotate, so that the cleaning member 14 can be moved to contact the nozzle 22 to clean the nozzle 22 and remove the residual material at the discharge port of the nozzle 22. The rotating cleaning method has better cleaning effect than the general direct cleaning method. It should be explained that the driving member 12 can be pushed in the pushing direction F to be stopped by the first support 11, and the rotating member 13 can rotate in the rotating direction R relative to the driving member 12 by a certain angle (for example, about 90°), so that the cleaning member 14 can be arranged in a direction substantially parallel to the driving direction F of the driving member 12; 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).

[0091] In the embodiment, the first teeth 122 arranged in a strip are arranged along the pushing direction F, the protrusions and recesses of the plurality of teeth on the first teeth 122 are arranged in a direction approximately perpendicular to the pushing direction F, and the first teeth 122 are arranged on one side of the driving member 12 and face the side where the rotating member 13 is located. The second teeth 1312 are arranged in an arc shape, the second teeth 1312 are located outside one end of the rotating member 13, and the second teeth 1312 are arranged in a semicircle shape. During the rotation of the rotating member 13, at least part of the second teeth 1312 faces the driving member 12 and is engaged with the first teeth 122, and the remaining part of the second teeth 1312 is separated from the first teeth 122. The part of the second teeth 1312 in contact with the first teeth 122 changes with the rotation.

[0092] In an embodiment, the first support 11 includes a connecting portion 111 and an assembling portion 112 arranged in connection, and the assembling portion 112 is arranged at one end of the connecting portion 111. The assembling portion 112 is used to connect with the driving member 12 and the rotating member 13, and the assembling portion 112 is provided with an assembling cavity 1120 for accommodating the driving member 12 and the rotating member 13. The connecting portion 111 is used to connect with the main support 21 of the 3D printing device 2, and the other end of the connecting portion 111 away from the assembling portion 112 is provided with an assembling hole for connecting with the main support 21 of the 3D printing device 2.

[0093] In an embodiment, the assembling 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 in a spaced relationship, the first side plate 1124 and the second side plate 1125 are arranged in a spaced relationship, and the inner plate 1123 is connected with the top plate 1121, the bottom plate 1122, the first side plate 1124, and the second side plate 1125. The other side of the assembling portion 112 spaced from the inner plate 1123 along the pushing direction F is an open structure, so that the internal space of the assembling cavity 1120 is exposed.

[0094] In the embodiment, the top plate 1121 is provided with one limiting slot 1126 and one limiting hole 1127 arranged in penetration. The limiting slot 1126 is approximately in a strip shape arranged along the pushing direction F, and one limiting hole 1127 is approximately in a circular shape. The bottom plate 1122 is provided with another limiting hole 1127 arranged in penetration, and the other limiting hole 1127 is also approximately in a circular shape. The two limiting holes 1127 are arranged in correspondence. The bottom plate 1122 is further provided with a guide strip 1128 protruding towards the inside of the assembling cavity 1120, and the guide strip 1128 is arranged along the pushing direction F. Among them, the limiting slot 1126 and the guide strip 1128 are arranged in correspondence with the position of the driving member 12, used to cooperate with the driving member 12, and the two limiting holes 1127 are arranged in correspondence with the position of the rotating member 13, used to cooperate with the rotating member 13.

[0095] In the embodiment, the length direction of the first side plate 1124 is substantially corresponding to the pushing direction F, the first side plate 1124 is connected with the top plate 1121, the bottom plate 1122 and the inner plate 1123, and is used for limiting the driving member 12 in cooperation with each other. The second side plate 1125 is connected with the top plate 1121, the bottom plate 1122 and the inner plate 1123, the second side plate 1125 is located at the same side of the inner plate 1123 as the first side plate 1124, 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, and the rotating member 13 is located between the top plate 1121, the bottom plate 1122 and the first side plate 1124.

[0096] In the embodiment, the inner plate 1123 is provided with a positioning column 1129 protruding towards the inside of the assembly cavity 1120, the positioning column 1129 is arranged at the position corresponding to the driving member 12, and is used for cooperating with the driving member 12.

[0097] Further combining Figure 3 and Figure 5 It is shown that in an embodiment, the driving member 12 further includes a first body 121 and a first limiting column 123, the first tooth 122 is arranged on one side of the first body 121, and the first limiting column 123 is connected with the first body 121; the first limiting column 123 is movably arranged in the limiting groove 1126, and the first body 121 is slidingly connected with the first support 11.

[0098] In the embodiment, the first body 121 is substantially cuboid, has a plurality of surfaces, and the plurality of surfaces are respectively in contact with the top plate 1121, the bottom plate 1122 and the first side plate 1124. The side of the first body 121 for contacting with the bottom plate 1122 is provided with a guide groove 124, and the guide groove 124 is used for accommodating the positioning column 1129. The side of the first body 121 for contacting with the top plate 1121 is connected with the first limiting column 123, the first limiting column 123 is protrudingly arranged compared with the first body 121, and the first limiting column 123 is movably arranged in the guide groove 124 along the pushing direction F. The side of the first body 121 for contacting with the first side plate 1124 is provided with a guide hole 125, the length direction of the guide hole 125 is corresponding to the pushing direction F, the guide hole 125 is arranged corresponding to the positioning column 1129 on the inner plate 1123, and the guide hole 125 can accommodate and cooperate with the first side plate 1124 to define a reset member (not shown in the figure), one end of the reset member is sleeved on the positioning column 1129, the other end of the reset member abuts against the first body 121, and is used for pushing the driving member 12 to reset. The side of the first body 121 away from the first side plate 1124 is provided with the first tooth 122, so that the first tooth 122 can be arranged towards the rotating member 13.

[0099] It can be understood that the driving member 12 is arranged in the assembly cavity 1120 in the pushing direction F, one end of the driving member 12 is in contact with the nozzle 22, the driving member 12 slides in the pushing direction F compared with the assembly part 112 under the cooperation of the guide strip 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. With the movement of the driving member 12 in the pushing direction F towards the inner plate 1123, the reset member between the inner plate 1123 and the first main body 121 is compressed, and after the force applied by the nozzle 22 to the driving member 12 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.

[0100] In an embodiment, the rotating member 13 comprises an engaging part 131 and a second support 132. The engaging part 131 is rotatably connected with the driving member 12 through the teeth, and the second support 132 is connected with the engaging part 131. The second support 132 is arranged in space with the first support 11, and the cleaning member 14 is connected with the second support 132. It can be understood that the engaging part 131 and the second support 132 can be arranged integrally or separately and connected with each other. Regardless of the connection mode of the engaging part 131 and the second support 132, the second support 132 can move with the engaging part 131 and drive the cleaning member 14 to move.

[0101] It can be understood that the second support 132 is arranged in space with the first support 11, which means that the second support 132 is connected with the driving member 12 arranged on the first support 11 through the engaging part 131, and the second support 132 is spaced apart from the first support 11 without contact in space. During the driven rotation of the second support 132, the second support 132 is configured to keep spaced apart from the first support 11 at all times without contact, so as to avoid interference with the rotation of the rotating member 13 caused by the contact between the second support 132 and the first support 11.

[0102] In an embodiment, the engaging part 131 further comprises a second main body 1311 and a second limiting column 1313. The second teeth 1312 are arranged on the side of the second main body 1311 towards the first main body 121, the second limiting column 1313 is connected with the second main body 1311, the second limiting column 1313 is connected with the first support 11 through the limiting hole 1127, and the engaging part 131 is rotatably connected with the first support 11.

[0103] In the embodiment, the second body 1311 comprises 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 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 second teeth 1312 on the side facing the driving member 12, and the second teeth 1312 are arranged in intervals along the arc-shaped side surface of the arc-shaped connecting end 13111; the arc-shaped connecting end 13111 is arranged in the assembly cavity 1120, the second limiting column 1313 penetrates through the arc-shaped connecting end 13111, and the two opposite ends of the second limiting column 1313 can be arranged in the two limiting holes 1127 respectively, and the meshing part 131 can rotate around the second limiting column 1313 in the rotating direction R. The transmission connecting end 13112 is connected to the side of the arc-shaped connecting end 13111 away from the second teeth 1312, and the side of the transmission connecting end 13112 away from the arc-shaped connecting end 13111 is connected to the second support 132.

[0104] In the embodiment, the second support 132 is connected to the transmission connecting end 13112 and extends away from the arc-shaped connecting end 13111, the second support 132 is used for bearing the cleaning member 14, and the relative position between the cleaning member 14 and the nozzle 22 can be maintained 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 support 132. The second support 132 comprises a third body 1321 and a bearing wall 1322, and the second support 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 connecting end 13112; the bearing wall 1322 is used for bearing the cleaning member 14, and the bearing wall 1322 protrudes towards the side close to the nozzle 22 compared to the third body 1321, so as to avoid interference between the third body 1321 and the nozzle 22.

[0105] In an embodiment, the cleaning member 14 comprises a fourth body 141 and a cleaning part 142, the fourth body 141 is connected to the bearing wall 1322, and the cleaning part 142 is arranged on the side of the fourth body 141 away from the bearing wall 1322. The fourth body 141 is used for connecting the cleaning member 14 and the rotating member 13, and the cleaning part 142 can have a pattern composed of a plurality of convex columns, so that the cleaning part 142 has a concave-convex structure to clean the nozzle 22. In other embodiments, the cleaning part 142 can also have a grid shape or other shapes of patterns, or the cleaning part 142 can have a cylindrical structure capable of rotating and having a sticky surface, and the residual material can be removed by contact adhesion.

[0106] It can be understood that the fourth body 141 can be a rubber sheet with certain adhesion and / or elasticity; the cleaning part 142 can be a rubber column with certain flexibility to avoid damage to the nozzle 22.

[0107] Further combined Figure 6 As shown, in an embodiment, the cleaning mechanism 10 further comprises elastic members 15 connected with the cleaning part 14 and the second support 132 respectively. The elastic members 15 are configured to enable the cleaning part 14 to move closer to or further away from the second support 132.

[0108] In an embodiment, the second support 132 is fixedly connected with the engaging part 131, and the elastic members 15 are arranged between the cleaning part 14 and the second support 132. The cleaning part 14 is connected with the second support 132 through the elastic members 15, and the distance between the cleaning part 14 and the second support 132 decreases due to the contraction of the elastic members 15 and increases due to the expansion of the elastic members 15.

[0109] In the embodiment, the elastic members 15 are elastic sheets, and the elastic members 15 are arranged between the fourth body 141 and the bearing wall 1322. It can be understood that the position of the cleaning part 14 is configured to be slightly higher than the discharge end of the lower part of the nozzle 22, and when the cleaning part 14 contacts the discharge end of the lower part of the nozzle 22, the cleaning part 14 and the nozzle 22 will be extruded to each other to enhance the pressure between the cleaning part 14 and the nozzle 22, thereby increasing the friction and improving the cleaning effect. At the same time, the elastic members 15 arranged between the cleaning part 14 and the bearing wall 1322 can provide a space for the cleaning part 14 to avoid, and when the nozzle 22 extrudes the cleaning part 14, the elastic members 15 contract and the thickness decreases, so that the cleaning part 14 can avoid the nozzle 22 to avoid being stuck or damaged, and the deformed elastic members 15 can also exert a force on the cleaning part 14 towards the nozzle 22, so that the cleaning part 14 can resist the nozzle 22 to improve the cleaning effect.

[0110] In other embodiments, the elastic members 15 can also be other elastic structures that can stretch and avoid and provide support, such as rubber sheets, etc.

[0111] Further combined Figure 7 and Figure 8 As shown, in another embodiment, the cleaning mechanism 10 further comprises a guide member 16 connected with the first support 11 and arranged on the rotation path of the rotating member 13, and the guide member 16 is used to change the rotation path of the second support 132. The second support 132 and the guide member 16 are in separable contact, and the second support 132 is used to drive the cleaning part 14 to move closer to the nozzle 22 through the guide member 16.

[0112] In an embodiment, the second support 132 is rotationally connected with the engaging portion 131, and the cleaning member 14 and the guide member 16 are respectively located on two sides opposite to each other of the second support 132. The guide member 16 has an inclined guide slope 161, and the second support 132 is in contact with the guide slope 161 to rotate the second support 132, so as to move the cleaning member 14 to a side away from the guide member 16. The guide slope 161 extends from a side close to the bottom plate 1122 of the first support 11 to a side close to the top plate 1121, and the guide slope 161 can be a rotationally extending slope corresponding to the rotation direction R, so that the second support 132 is more naturally lifted, and the cleaning member 14 has a better cleaning effect on the nozzle 22.

[0113] In the embodiment, the engaging portion 131 and the second support 132 are connected through the rotation connecting member 17, so that the second support 132 can rotate relative to the engaging portion 131. The transmission connecting end 13112 of the engaging portion 131 is provided with a connecting cavity 13113, and the third main body 1321 of the second support 132 is provided with a connecting opening 1323. The rotation connecting member 17 includes a connecting shaft 171, the connecting shaft 171 is arranged through the connecting opening 1323 and further accommodated in the connecting cavity 13113, so that the engaging portion 131 and the second support 132 are rotationally connected, and the second support 132 can rotate relative to the engaging portion 131 with the connecting shaft 171 as the axis.

[0114] Further, the rotation connecting member 17 can further include a reset portion 172, the reset portion 172 is sleeved outside the connecting shaft 171, and is used for resetting the second support 132. In the embodiment, the reset portion 172 can be a torsional spring, the torsional spring is deformed under pressure after the second support 132 rotates relative to the engaging portion 131, and releases the elastic force to reset the second support 132 after the force for rotating the second support 132 is removed. It can be understood that the reset portion 172 can help to improve the resetting accuracy of the second support 132, and at the same time, the second support 132 can also be reset under the action of gravity to omit the reset portion 172.

[0115] It can be understood that, during the rotation of the rotating member 13 along the rotation direction R, the side of the second support 132 away from the cleaning member 14 is in abutment with the guide slope 161, and the guide slope 161 guides the side of the second support 132 provided with the cleaning member 14 to be lifted towards the nozzle 22 during the rotation, so that the cleaning member 14 is in abutment with the nozzle 22. The cleaning member 14 and the nozzle 22 are pressed against each other to increase the pressure between the cleaning member 14 and the nozzle 22, thereby increasing the friction and improving the cleaning effect.

[0116] Further combination Figure 9As shown, the embodiment of the present application further provides a 3D printing device 2, which comprises a main support 21, a nozzle 22, a driving assembly 23 and the cleaning mechanism 10 according to any one of the preceding embodiments. The cleaning mechanism 10 and the nozzle 22 are respectively connected with the main support 21, the nozzle 22 is drivingly connected with the driving assembly 23, and the driving assembly 23 drives the nozzle 22 to contact or separate from the cleaning mechanism 10.

[0117] It can be understood that the main support 21 can be a gantry structure comprising 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 impact the driving member 12.

[0118] In the foregoing, the specific embodiments of the present application are described with reference to the accompanying drawings. However, it can be understood by those skilled in the art that various changes and replacements can be made to the specific embodiments of the present application without departing from the spirit and scope of the present application. These changes and replacements are within the scope defined by the present application.

Claims

1. A cleaning mechanism for wiping nozzles, characterized in that, include: First support; A driving component, which is slidably connected to the first bracket; A rotating component, rotatably connected to the driving component, wherein the rotating component is configured to rotate as it slides along the driving component; A cleaning component, connected to the rotating component, is configured to wipe the nozzle.

2. The cleaning mechanism as described in claim 1, characterized in that, The rotating component includes: The meshing part is rotatably connected to the drive member via teeth; The second bracket is connected to the engagement part, and the second bracket is spaced apart from the first bracket. The cleaning component is connected to the second bracket.

3. The cleaning mechanism as described in claim 2, characterized in that, Also includes: The elastic element is connected to the clearing element and the second bracket respectively; The elastic element is configured to allow the clearing element to move closer to or further away from the second support.

4. The cleaning mechanism as described in claim 3, characterized in that, The second bracket is fixedly connected to the engaging part, and the elastic element is disposed between the cleaning element and the second bracket; the cleaning element is connected to the second bracket through the elastic element, and the distance between the cleaning element and the second bracket decreases due to the contraction of the elastic element, or the distance between the cleaning element and the second bracket increases due to the expansion of the elastic element.

5. The cleaning mechanism as described in claim 2, characterized in that, Also includes: A guide member, which is connected to the first bracket and is disposed on the rotation path of the rotating member, is used to change the rotation path of the second bracket; The second bracket is in detachable contact with the guide.

6. The cleaning mechanism as described in claim 5, characterized in that, The second bracket is rotatably connected to the engaging part, and the cleaning member and the guide member are 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 away from the guide member.

7. The cleaning mechanism as described in claim 2, characterized in that, The driving component includes a first tooth arranged in a strip shape, and the meshing part includes a second tooth arranged in an arc shape, wherein the first tooth meshes with the second tooth.

8. The cleaning mechanism as described in claim 7, characterized in that: The driving component further includes a first body and a first limiting post, wherein the first limiting post is connected to the first body; The engaging part further includes a second body and a second limiting post, wherein the second limiting post is connected to the second body; The first limiting post is slidably disposed relative to the first bracket, and the second limiting post is rotatably disposed relative to the first bracket. The first body and the second body are connected by the first tooth and the second tooth.

9. The cleaning mechanism as described in claim 8, characterized in that, The first bracket has spaced limiting grooves and limiting holes. The first limiting post is slidably disposed in the limiting groove. The first body is slidably connected to the first bracket. The second limiting post is connected to the first bracket through the limiting hole. The meshing part is rotatably connected to the first bracket.

10. The cleaning mechanism as described in claim 8, characterized in that, The first tooth is located on one side of the first body, and the second tooth is located on the side of the second body facing the first body.

11. The cleaning mechanism as described in claim 1, characterized in that, The driving member is slidably connected to the first bracket along a pushing direction. The end of the driving member away from the first bracket is configured to be subjected to external force, causing the driving member to move along the pushing direction and drive the rotating member to rotate along a first rotation direction.

12. A 3D printing apparatus, characterized in that, It includes a main support, a nozzle, a drive 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 driven to be connected to the drive assembly, and the drive assembly drives the nozzle to contact or separate from the cleaning mechanism.

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