Cleaning mechanism, consumable recycling device, and 3D printer

Abstract

The present application relates to the technical field of 3D printing, and provides a cleaning mechanism, a consumable recycling device, and a 3D printer. The cleaning mechanism is configured to clean a nozzle of the 3D printer, the nozzle being provided with a feed end and a discharge port, and the cleaning mechanism comprises a first cleaning member and a second cleaning member. The first cleaning member is at least configured to clean foreign matter in a first region of the nozzle, and the second cleaning member is at least configured to clean foreign matter in a second region of the nozzle, wherein the first region is the region adjacent to the discharge port of the nozzle, and the second region is the region adjacent to an outer peripheral portion of the nozzle. The beneficial effect of the present application is to improve the cleaning efficiency and reliability for the nozzle.

Description

Cleaning mechanism, consumable recycling device and 3D printer TECHNICAL FIELD

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

[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 adhesive materials to manufacture three-dimensional objects by printing layer by layer. Fused deposition modeling technology is one of the main 3D printing technologies. In the application process, the melted consumables are extruded from the nozzle. However, during use, the nozzle surface may be left with some consumables or other foreign matter such as dust, which can easily cause nozzle blockage or reduce printing accuracy.

[0003] SUMMARY

[0004] The present application provides a cleaning mechanism, a consumable recycling device and a 3D printer.

[0005] The present application provides a cleaning mechanism for cleaning the nozzle of a 3D printer, the nozzle having a feeding end and a discharging port, the cleaning mechanism comprising a first cleaning member and a second cleaning member. The first cleaning member is configured to at least clean foreign matter at a first region of the nozzle. The second cleaning member is configured to at least clean foreign matter at a second region of the nozzle. The first region is a region close to the discharging port of the nozzle, and the second region is a region close to the peripheral side portion of the nozzle.

[0006] The cleaning mechanism can enhance the cleaning effect of the foreign matter such as consumables or dust in the first and second regions of the nozzle, improve the cleanliness of the nozzle surface, improve the cleaning effect and efficiency, greatly reduce the possibility of nozzle blockage, and reduce the possibility of the nozzle ejecting the foreign matter such as consumables or dust remaining on the nozzle surface during the process of ejecting the melted consumables, thereby reducing the possibility of the formed layer being contaminated during the forming process, and improving the printing quality.

[0007] In one possible implementation:

[0008] The nozzle is configured to move in a first preset region to be cleaned by the first cleaning member. The first cleaning member has a cleaning surface located at least partially in the first preset region, the cleaning surface including opposite first and second contact surfaces. In the first preset region, the first contact surface is configured to clean the foreign matter of the first region of the nozzle in a first movement direction of the nozzle, and the second contact surface is configured to clean the foreign matter of the first region of the nozzle in a second movement direction of the nozzle.

[0009] In a possible implementation,

[0010] The first contact surface is directly connected with the second contact surface, or the first contact surface is connected with the second contact surface through a third contact surface selected from any one of a plane, an arc surface or an irregular surface.

[0011] In a possible implementation,

[0012] The first contact surface and the second contact surface are arc surfaces smoothly connected.

[0013] In a possible implementation,

[0014] The first contact surface is arranged to be inclined relative to the first moving direction, and the first contact surface and the first moving direction have a first inclination angle of 1°-45°; the second contact surface is arranged to be inclined relative to the second moving direction, and the second contact surface and the second moving direction have a second inclination angle of 1°-45°.

[0015] In a possible implementation,

[0016] The first contact surface is directly connected with the second contact surface to form a triangle on a cross section of the first cleaning member; or the first contact surface is connected with the second contact surface through a third contact surface.

[0017] In a possible implementation,

[0018] The nozzle is configured to move in a second preset area to be cleaned by the second cleaning member, the second area being an outer peripheral surface of the nozzle. The second cleaning member includes a plurality of cleaning protrusions, each of which includes a fourth contact surface, and when the nozzle moves in the second preset area, the fourth contact surface is configured to contact and wipe the outer peripheral surface.

[0019] In a possible implementation,

[0020] The adjacent cleaning protrusions are spaced apart from each other to form a cleaning groove enclosed by a plurality of fourth contact surfaces. A plurality of cleaning grooves are formed on the second cleaning member to clean all the outer peripheral surfaces of the nozzle.

[0021] In a possible implementation,

[0022] The cleaning mechanism further comprises a mounting member and an elastic member. The mounting member connects the first cleaning member and the second cleaning member. The elastic member is elastically connected to the mounting member and is configured to provide an elastic force for resetting the cleaning mechanism.

[0023] In one possible implementation,

[0024] The mounting member further comprises a connecting portion configured to connect the 3D printer, and the elastic member is connected to the connecting portion and the 3D printer respectively.

[0025] In one possible implementation,

[0026] The side surface of the mounting member is provided with a clamping elastic arm, and a clamping protrusion is arranged at the free end of the clamping elastic arm, which is configured to be connected to the buckle of the 3D printer for mounting.

[0027] The application further provides a consumable recycling device comprising a discharging member and the aforementioned cleaning mechanism. The discharging member is provided with a discharging inlet, a discharging outlet and a discharging channel connecting the discharging inlet and the discharging outlet. The cleaning mechanism is arranged at the area where the discharging inlet is located.

[0028] In one possible implementation,

[0029] The consumable recycling device further comprises a clamping member arranged at the discharging inlet, and the first cleaning member and the second cleaning member are both connected to the clamping member in the discharging direction.

[0030] In one possible implementation,

[0031] The consumable recycling device further comprises a receiving member arranged at the discharging inlet, and the receiving member comprises a receiving baffle configured to be rotatable relative to the discharging member between a first position and a second position. In the first position, the receiving baffle covers at least part of the discharging inlet to receive the consumable discharged from the nozzle, and in the process of rotating to the second position, the receiving baffle is configured to make the consumable fall into the discharging channel.

[0032] In one possible implementation,

[0033] The consumable recycling device further comprises a buffer member configured to buffer the receiving baffle at least in the second position.

[0034] In one possible implementation,

[0035] The consumable recycling device further comprises a rotating shaft member and a fixing member. The rotating shaft member is connected to the discharging member, and the rotating shaft member is rotatably connected to one side of the material receiving baffle to rotate the material receiving baffle relative to the discharging member between the first position and the second position. The fixing member is configured to fix the rotating shaft member to the discharging member.

[0036] In one possible implementation,

[0037] The fixing member comprises an elastic support structure elastically supported between the rotating shaft member and the discharging member, and the elastic support structure is configured to limit the rotating shaft member to the discharging member in the axial direction of the rotating shaft member.

[0038] The application further provides a 3D printer comprising a nozzle module and the aforementioned cleaning mechanism or consumable recycling device. The nozzle module comprises a nozzle. BRIEF DESCRIPTION OF DRAWINGS

[0039] In order to more clearly illustrate the technical solutions of the embodiments of the application, the drawings in the embodiments will be briefly introduced as follows. It should be understood that the following drawings only show some of the embodiments of the application, and therefore should not be considered as limiting the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0040] FIG. 1 is a top view of a 3D printer according to an embodiment of the application.

[0041] FIG. 2 is a top view of a consumable recycling device according to an embodiment of the application.

[0042] FIG. 3 is a perspective structural schematic view of a consumable recycling device according to an embodiment of the application.

[0043] FIG. 4 is a perspective structural schematic view of a consumable recycling device according to an embodiment of the application from another perspective, in which a material receiving member is in a first position.

[0044] FIG. 5 is a perspective structural schematic view of a consumable recycling device according to an embodiment of the application from another perspective, in which a material receiving member is in a second position.

[0045] FIG. 6 is a sectional structural schematic view of a consumable recycling device according to an embodiment of the application.

[0046] FIG. 7 is a partial sectional view of a consumable recycling device according to an embodiment of the application.

[0047] FIG. 8 is an exploded structural schematic view of a consumable recycling device according to an embodiment of the application.

[0048] FIG. 9 is a structural schematic view of a cleaning mechanism according to an embodiment of the application.

[0049] Fig. 10 is a sectional view of a cleaning mechanism and a nozzle according to an embodiment of the present application.

[0050] Fig. 11 is a schematic view of a structure of a first cleaning member according to another embodiment of the present application.

[0051] Fig. 12 is a schematic view of a structure of a first cleaning member according to another embodiment of the present application.

[0052] Fig. 13 is a schematic view of a structure of a first cleaning member according to another embodiment of the present application.

[0053] Fig. 14 is a schematic view of a structure of a first cleaning member according to another embodiment of the present application.

[0054] Fig. 15 is an enlarged view of a portion II in Fig. 6.

[0055] Fig. 16 is an exploded schematic view of a cleaning mechanism according to an embodiment of the present application.

[0056] Fig. 17 is a schematic view of a structure of a mounting member according to an embodiment of the present application.

[0057] Explanation of main element symbols: DETAILED DESCRIPTION

[0058] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application.

[0059] It should be noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or there can be intervening elements. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there can be intervening elements. When an element is referred to as being "disposed" on another element, it can be directly on the other element or there can be intervening elements. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0060] Unless otherwise defined, all 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. The terminology used in the description of the application 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.

[0061] Some embodiments of the present application are described in detail. The following embodiments and features of the embodiments can be combined with each other in the case of no conflict.

[0062] Referring to FIG. 1, the present embodiment provides a 3D printer 300, comprising a frame 304, a transfer device 303, a nozzle module 301, a consumable recycling device 200 and a printing platform 305. The transfer device 303 is arranged on the frame 304. The consumable recycling device 200 is arranged on the frame 304. The nozzle module 301 and the printing platform 305 are spaced apart along the Z direction. The nozzle module 301 comprises a nozzle 302. The nozzle module 301 is used to receive consumables and melt the consumables, and the nozzle 302 is used to spray the melted consumables onto the printing platform 305. The melted consumables are solidified on the printing platform 305 to form a printed part. The structure related to melting consumables of the nozzle module 301 can refer to the existing nozzle module 301, which will not be described here. The nozzle module 301 is connected to the transfer device 303 and can move relative to the consumable recycling device 200 under the driving of the transfer device 303.

[0063] Exemplarily, the transfer device 303 comprises an X-axis transfer assembly 3031 and a Y-axis transfer assembly 3032. The X-axis transfer assembly 3031 is connected to the nozzle module 301 and is used to drive the nozzle module 301 to move along the X-axis direction. The Y-axis transfer assembly 3032 is connected to the X-axis transfer assembly 3031 and is used to drive the X-axis transfer assembly 3031 to move along the Y-axis direction. In other embodiments, the transfer device 303 further comprises a Z-axis transfer assembly 3033 connected to the Y-axis transfer assembly 3032 to drive the Y-axis transfer assembly 3032 to move along the Z-axis direction.

[0064] In the present embodiment, a cutting part (not shown in the figure) is arranged in the nozzle module 301. After the nozzle module 301 completes printing or needs to switch different consumables, the cutting part cuts the consumables in the nozzle module 301, and the nozzle module 301 remains residual consumables. The specific structure of the cutting part can refer to the existing cutting structure, which will not be described here. Thereafter, the nozzle module 301 moves to the consumable recycling device 200 and melts the consumables to be sprayed from the nozzle 302 to the consumable recycling device 200. The consumable recycling device 200 timely collects the consumables sprayed from the nozzle 302 to reduce the possibility of the consumables accumulating in the nozzle 302 and thereby clogging the nozzle 302, and improve the subsequent printing precision of the nozzle module 301.

[0065] In the embodiment, referring to FIG. 2 and FIG. 3, the consumable recycling device 200 includes a discharging member 60 and a cleaning mechanism 100. The discharging member 60 is provided with a discharging inlet K1, a discharging outlet K2 and a discharging channel Q connecting the discharging inlet K1 and the discharging outlet K2. In some embodiments, the discharging inlet K1 is open along the Z-axis direction to facilitate receiving the consumable discharged from the nozzle module 301. In other embodiments, the plane where the discharging inlet K1 is located intersects with the horizontal plane. After the cutting member cuts the consumable in the nozzle module 301, the nozzle module 301 moves above the discharging inlet K1 and discharges the consumable so that the consumable can fall into the discharging channel Q, thereby achieving the collection of the consumable. The cleaning mechanism 100 is connected to the discharging member 60 and is arranged in the area where the discharging inlet K1 is located. After the nozzle module 301 completely discharges the consumable, the nozzle module 301 moves to the cleaning mechanism 100, and the cleaning mechanism 100 contacts the nozzle 302 to clean the consumable and dust and other foreign matters on the surface of the nozzle 302 after discharging the consumable, thereby further reducing the possibility of the nozzle 302 being blocked and improving the printing quality.

[0066] The discharging outlet K2 is connected to one end of the discharging channel Q, and the discharging inlet K1 is connected to the other end of the discharging channel Q. The discharging outlet K2 is used to discharge the consumable. In some embodiments, referring to FIG. 1, the discharging outlet K2 is arranged on the side of the rack 304 or outside the rack 304 to discharge the consumable outside the rack 304, thereby facilitating the processing or recycling of the consumable. In some embodiments, referring to FIG. 3, the discharging channel Q is inclined downward along the Y direction, and the discharging inlet K1 is located above the discharging outlet K2 to facilitate the discharge of the solidified consumable to the discharging outlet K2 under the action of gravity.

[0067] In the embodiment, referring to FIG. 3, the consumable recycling device 200 further includes a receiving member 70 arranged at the discharging inlet K1. The receiving member 70 includes a receiving baffle 71 configured to be rotatable relative to the discharging member 60 between a first position and a second position. The receiving baffle 71 is rotatably connected to the discharging member 60. In the first position, the receiving baffle 71 covers at least part of the discharging inlet K1 to receive the consumable discharged from the nozzle 302. In the second position, the receiving baffle 71 avoids the discharging inlet K1. Referring to FIG. 4, the receiving baffle 71 is in the first position to receive the consumable discharged from the nozzle module 301. Referring to FIG. 5, the receiving baffle 71 is in the second position. The receiving member 70 in the first position receives the consumable first, and the molten consumable is cooled and solidified on the surface of the receiving member 70. Then the receiving member 70 rotates to the second position and makes the solidified consumable fall into the discharging channel Q of the discharging member 60, thereby achieving the recycling of the consumable and avoiding the molten consumable directly falling on the surface of the discharging member 60, improving the protection of the discharging member 60, reducing the cleaning difficulty of the discharging member 60, and simultaneously allowing the discharging member 60 to be made of plastic or other materials, thereby reducing the cost of the consumable recycling device 200.

[0068] In some embodiments, in order to improve the solidification speed of the consumable on the receiving member 70, the receiving member 70 can be made of metal material, which has faster heat conduction performance, so that the hot-melt consumable can be quickly cooled and solidified, and the hot-melt consumable is not easy to react with the metal and bond to the metal surface.

[0069] In some embodiments, referring to FIGS. 3-6, the receiving member 70 further includes a bent side plate 72 and an extended protrusion 73. The bent side plate 72 is connected to one side of the receiving baffle 71 along the Y direction. The extended protrusion 73 is connected to one end of the bent side plate 72. When the receiving member 70 is in the first position, the extended protrusion 73 extends away from the discharge inlet K1 along the Z direction, so that the head module 301 is driven by the transfer device 303 to collide with the extended protrusion 73, thereby driving the receiving baffle 71 to rotate. When the receiving member 70 is in the second position, the extended protrusion 73 is substantially parallel to the horizontal plane, so as to avoid the receiving member 70 from being flipped out of the discharge passage Q under the collision of the head module 301, thereby ensuring the movement reliability of the receiving member 70. Through the repeated collision of the head module 301 on the extended protrusion 73, the receiving member 70 can be repeatedly moved between the first position and the second position, so as to ensure the consumable to fall off from the surface of the receiving baffle 71 to the discharge passage Q through multiple movements.

[0070] In some embodiments, referring to FIG. 6, the receiving baffle 71 includes a first plate portion 711, a second plate portion 712, and a curved plate portion 713. The two sides of the first plate portion 711 are respectively connected with the second plate portion 712 and the curved plate portion 713. The curved plate portion 713 is sleeved on the shaft member 82 and is fixedly connected with the shaft member 82, so that the receiving baffle 71 can be rotated relative to the discharge member 60 through the shaft member 82. The included angle between the first plate portion 711 and the second plate portion 712 is obtuse, and an receiving groove 714 is formed. When the receiving member 70 is located at the discharge inlet K1, the receiving groove 714 is recessed along the Z direction towards the inner side of the discharge passage Q, and the receiving groove 714 provides a certain bearing space to accommodate the molten consumable, thereby reducing the possibility that the molten consumable directly slides from the surface of the receiving baffle 71 into the discharge passage Q under the action of gravity. In some embodiments, the first plate portion 711, the second plate portion 712, and the curved plate portion 713 are formed by bending an integral plate member.

[0071] In the embodiment, referring to FIGS. 4-6, the consumable recycling device 200 further comprises a buffer 81. The buffer 81 is configured to at least buffer the material receiving member 70 rotating to the second position. In this way, during the reciprocating rotation of the material receiving member 70 relative to the material discharging member 60 for multiple times, the buffer 81 can timely limit the material receiving member 70 during the rotation of the material receiving member 70 away from the material discharging entrance K1, so as to facilitate the next rotation of the material receiving member 70 to the material discharging entrance K1. Meanwhile, the buffer 81 can also buffer the rotational movement of the material receiving member 70, reduce the possibility of the material receiving member 70 colliding and damaging the material discharging member 60 for multiple times, and thus prolong the service life of the consumable recycling device 200.

[0072] In some embodiments, the material of the buffer 81 is a material with flexible buffering performance, such as foam or rubber pad.

[0073] In some embodiments, referring to FIG. 6, the buffer 81 is fixedly connected to one side of the material receiving baffle 71 towards the inner side of the material discharging channel Q. The fixation of the buffer 81 to the material receiving baffle 71 is relatively simple, which can improve the assembly efficiency of the consumable recycling device 200. The buffer 81 can be connected to the material receiving baffle 71 by bonding, screwing or other connection methods. In other embodiments, the buffer 81 can also be fixed to the side of the material receiving baffle 71 away from the material discharging entrance K1.

[0074] In some embodiments, referring to FIGS. 4 and 5, the buffer 81 is fixedly connected to the material discharging member 60. In this way, the overall weight of the material receiving member 70 remains relatively light, thereby reducing the required force for the material discharging member 60 to drive the material receiving baffle 71 to rotate relative to the material discharging member 60, and the reciprocating movement stroke of the material discharging member 60 can be reduced, thereby improving the disengagement efficiency of the consumables on the material receiving baffle 71.

[0075] In some embodiments, referring to FIG. 5, when the material receiving baffle 71 is in the second position, the material receiving baffle 71 and the buffer 81 are in surface contact, which can improve the buffering effect of the buffer 81 on the material receiving baffle 71.

[0076] In some embodiments, the buffer 81 is a single buffer strip, and the length of the buffer strip along the Y direction is greater than or equal to the length of the material receiving member 70 along the Y direction. In other embodiments, two or more buffers 81 can be provided, and the buffer 81 is configured as a buffer block. In this way, one buffer 81 is provided on each side of the material discharging member 60, so that the two or more buffers 81 can simultaneously buffer the two ends of the material receiving member 70, thereby improving the buffering stability.

[0077] In some embodiments, referring to FIGS. 6 and 7, the consumable recycling device 200 further comprises a rotating shaft member 82. The length direction of the rotating shaft member 82 is parallel to the Y direction. Two ends of the rotating shaft member 82 are respectively connected with the discharging member 60. The receiving member 70 is rotatably connected with the receiving member 70. When the receiving member 70 is not subjected to external force, the receiving member 70 rotates to the second position relative to the discharging member 60 under the action of its own gravity. When the receiving member 70 is subjected to external force, the receiving member 70 rotates to the first position relative to the discharging member 60 from the second position through the rotating shaft member 82, and when the receiving member 70 is no longer subjected to external force, it will rotate to the second position under the action of its own gravity. By repeatedly applying external force to the receiving member 70, the receiving member 70 can be repeatedly rotated back and forth, and then the solidified consumable is separated from the receiving member 70 under the vibration of rotation and falls into the discharging channel Q.

[0078] In some embodiments, the transfer device 303 can drive the nozzle module 301 to move along the radial direction (for example, the X direction) of the rotating shaft member 82 and impact the receiving member 70, so that the receiving member 70 rotates relative to the discharging member 60 multiple times. In other embodiments, the consumable recycling device 200 can drive the rotating shaft member 82 to rotate through a driving structure such as a motor, so as to realize the reciprocating rotation of the receiving member 70.

[0079] In some embodiments, referring to FIG. 7, the rotating shaft member 82 is rotatably connected with the discharging member 60. The consumable recycling device 200 further comprises a fixing member 83. The fixing member 83 is configured to fix the rotating shaft member 82 to the discharging member 60. In this way, during the multiple switching of the receiving member 70 between the first position and the second position relative to the discharging member 60, the rotating shaft member 82 can remain fixedly connected with the discharging member 60, thereby improving the action stability of the consumable recycling device 200.

[0080] In some embodiments, the fixing member 83 comprises an elastic supporting structure 83a. The elastic supporting structure 83a abuts between the rotating shaft member 82 and the discharging member 60. The two sides of the elastic supporting structure 83a are respectively elastically abutted against the inner surface of the discharging member 60 and the rotating shaft member 82 to limit the rotating shaft member 82 to the discharging member 60 in the axial direction of the rotating shaft member 82. During the multiple rotations of the rotating shaft member 82 relative to the discharging member 60, the elastic supporting structure 83a can ensure the relative position between the rotating shaft member 82 and the discharging member 60 to be stable, greatly reducing the possibility of the rotating shaft member 82 falling off from the discharging member 60. At the same time, the elastic supporting structure 83a stably supports the discharging member 60 to reduce the possibility of the side wall of the discharging member 60 being recessed and deformed inwardly of the discharging channel Q, thereby improving the structural stability of the discharging member 60.

[0081] In some embodiments, referring to FIG. 7, the rotating shaft 82 comprises a first shaft segment 821 and a second shaft segment 822. The second shaft segment 822 is connected to the first shaft segment 821. The outer diameter of the second shaft segment 822 is smaller than that of the first shaft segment 821. The first shaft segment 821 is fitted in the discharging channel Q, one end of the second shaft segment 822 is located in the discharging channel Q, and the other end extends out of the discharging channel Q through the discharging member 60. The elastic supporting structure 83a is sleeved on the second shaft segment 822 and elastically abuts between the first shaft segment 821 and the inner surface of the discharging member 60.

[0082] In some embodiments, the rotating shaft 82 can be configured as a pin or a round shaft structure.

[0083] In some embodiments, the elastic supporting structure 83a is configured as a snap spring having an opening. After the rotating shaft 82 is installed in the discharging member 60, the snap spring can be clamped on the second shaft segment 822 from the opening, thereby improving the assembly convenience of the consumable recycling device 200.

[0084] In some embodiments, one end of the rotating shaft 82 extends out of the discharging channel Q through the discharging member 60. The fixing member 83 can be configured as a nut. The nut is located outside the discharging member 60 and locks the rotating shaft 82 to the discharging member 60. In this way, the rotating shaft 82 is fixedly connected to the discharging member 60. In other embodiments, the fixing member 83 can also be pinned to the rotating shaft 82.

[0085] In some embodiments, both ends of the rotating shaft 82 are fixedly connected to the discharging member 60. The receiving member 70 is rotatably connected to the rotating shaft 82. Therefore, in this embodiment, there are various embodiments for achieving the rotatable connection between the receiving member 70 and the discharging member 60, which will not be described here.

[0086] In some embodiments, referring to FIG. 3, the discharging member 60 comprises a bottom wall 61, a first side wall 62, a second side wall 63, and a top wall 64. The first side wall 62 is connected to one side of the bottom wall 61 along the X direction, and the second side wall 63 is connected to the other side of the bottom wall 61 along the X direction. The top wall 64 is spaced apart from the bottom wall 61 along the Z direction. The first side wall 62 is connected to one side of the bottom wall 61 along the X direction and one side of the top wall 64 along the X direction. The second side wall 63 is connected to the other side of the bottom wall 61 along the first direction X and the other side of the top wall 64 along the X direction. One end of the bottom wall 61, the first side wall 62, the second side wall 63, and the top wall 64 along the Y direction collectively form a discharging outlet K2. The other end of the bottom wall 61, the first side wall 62, the second side wall 63, and the top wall 64 along the Y direction collectively form a discharging inlet K1. The discharging outlet K2 is open along the Y direction.

[0087] In some embodiments, referring to FIG. 3, the material discharging member 60 further comprises a first side wall 65 and a second side wall 66. The first side wall 65 is connected to one end of the top wall 64 along the Y direction, and the second side wall 66 is connected to one end of the bottom wall 61 along the Y direction. The first side wall 65 is spaced apart from the second side wall 66 along the Y direction. One side of the first side wall 65 along the X direction and one side of the second side wall 66 along the X direction are connected by the first side wall 62. The other side of the first side wall 65 along the X direction and the other side of the second side wall 66 along the X direction are connected by the first side wall 62, and define a clearance K3 between the first side wall 62. The clearance K3 is in communication with the material discharging opening K1, and the material receiving member 70 is fitted in the clearance K3. The buffer member 81 is connected to the second side wall 63 and located between the first side wall 65 and the second side wall 66.

[0088] In some embodiments, referring to FIG. 3, the first side wall 62 comprises a first wall segment 621 and a second wall segment 622. The first wall segment 621 is spaced apart from the second side wall 63 along the X direction. The second wall segment 622 is connected to the first wall segment 621. The second wall segment 622 is connected to the first side wall 65 and the second side wall 66 along the Y direction. The second wall segment 622, the first side wall 65 and the second side wall 66 jointly define the material discharging opening K1. The cleaning mechanism 100 is installed at the second wall segment 622 and located on both sides of the material receiving member 70 along the X direction. In this way, after the material is discharged by the nozzle module 301, the nozzle module 301 can continue to move along the X direction under the driving of the transfer device 303 to complete the cleaning of the nozzle 302, thereby improving the cleaning efficiency of the nozzle module 301.

[0089] Referring to FIG. 7, the first side wall 65 is provided with a pivot slot 651, and the second side wall 66 is provided with a pivot hole 661. One end of the pivot shaft member 82 is rotatably fitted in the pivot hole 661, and the other end of the pivot shaft member 82 is rotatably fitted in the pivot slot 651. In this way, the pivot shaft member 82 can pass through the second side wall 66 from the pivot hole 661 and be fitted in the pivot slot 651, thereby improving the assembly efficiency of the pivot shaft member 82 and the material discharging member 60. At the same time, the material receiving member 70 is fitted in the clearance K3, which can avoid the possibility of the material receiving member 70 colliding with the material discharging member 60 during rotation.

[0090] In the present embodiment, referring to FIGS. 8 and 9, the cleaning mechanism 100 includes a first cleaning member 20 and a second cleaning member 30. In some embodiments, the cleaning mechanism 100 further includes a mounting member 10. The mounting member 10 is connected to the discharge member 60. Specifically, the mounting member 10 is connected to the second wall segment 622 of the first side wall 65. Referring to FIG. 10, the nozzle 302 includes a tip portion 3026 and a peripheral portion 3027. The peripheral portion 3027 is connected to a throat (not shown in the figure) in the nozzle module 301. The tip portion 3026 is connected to the peripheral portion 3027. The tip portion 3026 and the peripheral portion 3027 together define a consumable passage 3023 for conveying the melted consumable. The nozzle 302 further has an inlet end 3024 and an outlet 3025. The outlet 3025 is located on a side of the tip portion 3026 facing away from the peripheral portion 3027, and the outlet 3025 is in communication with the consumable passage 3023. The inlet end 3024 is an end of the nozzle 302 close to the nozzle module 301 for receiving the consumable. After the nozzle 302 extrudes the melted consumable from the outlet 3025, some of the consumable can remain on the surface of the tip portion 3026 and the surface of the peripheral portion 3027. A direction from the inlet end 3024 to the outlet 3025 is an outlet direction N1. In some embodiments, the outlet direction N1 is parallel to the Z direction.

[0091] The first cleaning member 20 is connected to the mounting member 10, and the first cleaning member 20 is configured to at least clean foreign matter at a first region 3021 of the nozzle 302. The second cleaning member 30 is connected to the mounting member 10, and the second cleaning member 30 is configured to at least clean foreign matter at a second region 3022 of the nozzle 302. The first region 3021 is a region of the nozzle 302 close to the outlet 3025 of the nozzle 302, and it can be understood that the region close to the outlet 3025 of the nozzle 302 is the tip portion 3026 of the nozzle 302. For example, the first region 3021 can be formed as a surface of the tip portion 3026, which includes a bottom surface of the tip portion 3026 where the outlet 3025 is formed, and at least a portion of a side surface of the tip portion 3026 close to the bottom surface. The second region 3022 is a region of the nozzle 302 close to the peripheral portion 3027 of the nozzle 302, for example, the second region 3022 can be formed as a side surface of the peripheral portion 3027 and a portion of the side surface of the tip portion 3026 facing away from the bottom surface. In some embodiments, the peripheral surface of the peripheral portion 3027 can be configured as a cylindrical surface, a conical frustum surface, a polygonal side surface, or other shapes of surfaces. It should be noted that the tip portion 3026 of the nozzle 302 does not refer to a portion having a distinct convex point, but only refers to a region close to the outlet 3025 of the nozzle 302.

[0092] In this way, the cleaning mechanism 100 can enhance the cleaning effect of the consumable or foreign matter on the first region 3021 and the second region 3022 of the nozzle 302, improve the cleanliness of the surface of the nozzle 302, improve the cleaning effect and cleaning efficiency, greatly reduce the possibility of nozzle 302 blockage, and reduce the possibility of residual consumable on the surface of the nozzle 302 being ejected during the ejection of the molten consumable, thereby reducing the possibility of the formed layer being contaminated during the forming process, thereby improving the printing quality.

[0093] In some embodiments, when the nozzle 302 is in contact with the first cleaning member 20 and relative motion is generated, the first cleaning member 20 mainly cleans the foreign matter of the first region 3021, and the first cleaning member 20 can also clean the foreign matter of the second region 3022 with different action modes of the first cleaning member 20 relative to the nozzle 302. When the nozzle 302 is in contact with the second cleaning member 30 and relative motion is generated, the second cleaning member 30 mainly cleans the foreign matter of the second region 3022, and the second cleaning member 30 can also clean the foreign matter of the first region 3021 with different action modes of the second cleaning member 30 relative to the nozzle 302.

[0094] In some embodiments, the first cleaning member 20 and the second cleaning member 30 are spaced apart to perform the cleaning action of the next region after the foreign matter falls off the nozzle 302 after the cleaning action of the previous region ends, thereby ensuring the cleaning reliability.

[0095] In some embodiments, referring to FIG. 10, the nozzle 302 defines a consumable channel 3023, and the opening of the consumable channel 3023 is located on the bottom surface of the nozzle 302. During the movement of the nozzle 302 relative to the first cleaning member 20, the first cleaning member 20 can also wipe the bottom surface of the nozzle 302 to drive part of the residual consumable in the consumable channel 3023 out of the consumable channel 3023, thereby further improving the cleaning effect of the first cleaning member 20.

[0096] The cleaning process of the cleaning mechanism 100 on the foreign matter such as consumable or dust on the surface of the nozzle 302 is as follows. After the nozzle head module 301 discharges the consumable to the discharge channel Q, the nozzle head module 301 is moved to the first cleaning member 20 under the driving of the transfer device 303, and then moves relative to the cleaning mechanism 100. The first region 3021 of the nozzle 302 is in contact with the first cleaning member 20 and generates friction, so that the residual consumable or dust foreign matter of the first region 3021 is cleaned by the first cleaning member 20. The transfer device 303 drives the nozzle head module 301 to move to the second cleaning member 30, and moves relative to the second cleaning member 30. The second region 3022 of the nozzle 302 is in contact with the second cleaning member 30 and generates friction, so that the residual consumable or dust foreign matter of the second region 3022 is cleaned by the second cleaning member 30.

[0097] In some embodiments, referring to FIG. 10, when the nozzle 302 needs to be cleaned, the transfer device 303 moves the nozzle module 301 relative to the cleaning mechanism 100, and drives the nozzle 302 to move in the first preset area Al along a movement direction N2. The movement direction N2 includes a first movement direction N21 and a second movement direction N22. The first cleaning member 20 has a cleaning surface P located at least partially in the first preset area Al. When the first cleaning member 20 is stationary, the cleaning surface P can be located at different positions of the first cleaning member 20, and the cleaning surface P can be located in the first preset area Al with the relative movement of the first cleaning member 20 and the nozzle 302. When the nozzle 302 is driven by the transfer device 303 to move, the nozzle 302 generally moves along a preset movement track on a set plane. For example, the set plane is a plane parallel to the horizontal plane, and the movement track can be a straight one-way movement track, a straight back-and-forth movement track, a meandering S-shaped track, a circular track, or a special-shaped track moving back and forth in different directions, etc. Due to the assembly errors of the nozzle 302 and other components of the nozzle module 301, the assembly errors between the nozzle module 301 and the transfer device 303, the assembly errors between the cleaning mechanism 100 and the rack 304, etc., the actual relative position of the nozzle 302 and the cleaning mechanism 100 has errors compared with the theoretical relative position, and thus the movement track of the nozzle 302 cannot be absolutely kept on the set plane, and the movement track has the possibility of being offset downward or upward along the Z direction at some positions. Therefore, the first preset area Al is configured as an area with a certain height, and the top surface of the first preset area Al is offset by 0.1 mm to 0.5 mm compared with the set plane, and the bottom surface of the first preset area Al is offset by 0.1 mm to 0.5 mm compared with the set plane.

[0098] In some embodiments, the set plane is theoretically flush with the bottom surface of the nozzle 302, and the movement of the nozzle 302 in the first preset area Al means that the bottom surface of the nozzle 302 moves in the first preset area Al. Due to the aforementioned assembly errors, the error range of the bottom surface of the nozzle 302 during movement is located in the first preset area Al.

[0099] In some embodiments, the cleaning surface P is located on the side of the top surface of the first preset area Al away from the top surface or vertex of the printing platform 305, or coincides with the top surface of the first preset area Al along the Z direction away from the top surface of the printing platform 305.

[0100] In some embodiments, referring to FIG. 10, the cleaning surface P includes opposite first and second contact surfaces P1 and P2. In the first preset area A, the first contact surface P1 is configured to clean the foreign matter at the first area 3021 of the nozzle 302 in the first moving direction N21 of the nozzle 302, and the second contact surface P2 is configured to clean the foreign matter at the second area 3022 of the nozzle 302 in the second moving direction N22 of the nozzle 302. The first and second moving directions N21 and N22 are different. Thus, the foreign matter at the first area 3021 can be reliably cleaned during the reciprocating movement of the nozzle 302 in the first and second moving directions N21 and N22.

[0101] In some embodiments, the first and second moving directions N21 and N22 are parallel and opposite. The first moving direction N21 is from left to right in FIG. 10, and the second moving direction N22 is from right to left in FIG. 10. Thus, the moving device 303 only needs to drive the nozzle 302 to reciprocate in one direction, which can simplify the movement control logic of the nozzle 302. For example, the moving direction N2 can be parallel to the X direction.

[0102] In one embodiment, referring to FIG. 10, the first cleaning member 20 is configured as a tubular structure. The first and second contact surfaces P1 and P2 are smoothly connected arc surfaces. The first cleaning member 20 can be configured as a Teflon tube, so as to directly form the first and second contact surfaces P1 and P2. The Teflon tube has good lubricity, non-stickiness, and good wear resistance, which can improve the cleaning effect of consumables or dust and prolong the service life of the first cleaning member 20. In other embodiments, the first cleaning member 20 can also be a rubber convex column.

[0103] In this embodiment, referring to FIG. 10, the mounting member 10 includes a mounting base 11 and a connecting shaft 12. The connecting shaft 12 is rotatably connected to the mounting base 11. The first cleaning member 20 is fixed to the connecting shaft 12. The second cleaning member 30 is arranged on the mounting base 11 and spaced from the connecting shaft 12 along the X direction. During the reciprocating movement of the nozzle module 301 relative to the first cleaning member 20 along the moving direction N2, the first cleaning member 20 can drive the connecting shaft 12 to rotate relative to the mounting base 11, so that the surfaces of the first cleaning member 20 can clean the nozzle 302, and the utilization rate of the first cleaning member 20 is improved. In addition, the first cleaning member 20 can be conveniently disassembled and assembled on the connecting shaft 12, so that the convenience of replacing the first cleaning member 20 is improved.

[0104] In some embodiments, referring to FIGS. 9 and 10, the mounting member 10 further comprises two connecting ears 14. The two connecting ears 14 are spaced apart from each other on the mounting base 11. One end of the connecting shaft 12 is rotatably connected to one of the connecting ears 14, and the other end of the connecting shaft 12 is rotatably connected to the other connecting ear 14. The first cleaning member 20 is spaced apart from the surface of the mounting base 11. In this way, the rotation of the first cleaning member 20 can be prevented from interfering with the mounting base 11, and the cleaning stability can be improved.

[0105] In some embodiments, the connecting shaft 12 can be a rigid shaft body to improve the rotation stability of the first cleaning member 20. In other embodiments, the connecting shaft 12 can be an elastic shaft body, which can drive the first cleaning member 20 to move towards or away from the mounting member 10 along the Z direction during the reciprocating movement of the nozzle module 301 on both sides of the first cleaning member 20, so as to provide different direction cleaning actions for the first area 3021 of the nozzle 302.

[0106] In some embodiments, the surface of the first cleaning member 20 can be a smooth surface. In other embodiments, the surface of the first cleaning member 20 can also be a rough surface.

[0107] In some embodiments, referring to FIGS. 10 and 11, the first contact surface P1 is directly connected to the second contact surface P2. In other embodiments, the first contact surface P1 and the second contact surface P2 are connected through a third contact surface P3, which is selected from any one of a plane, an arc surface, or an irregular surface. The irregular surface refers to a surface with uneven concave-convex, or a bent surface formed by sequentially connecting a plurality of planes, or a surface formed by sequentially connecting surfaces with different shapes such as arc surfaces and planes in different directions.

[0108] In some embodiments, referring to FIG. 10, the first contact surface P1 is arranged to be inclined with respect to the first movement direction N21. The first contact surface P1 and the first movement direction N21 have a first inclination angle a, and 1°≤a≤45°. The second contact surface P2 is arranged to be inclined with respect to the second movement direction N22. The second contact surface P2 and the second movement direction N22 have a second inclination angle b, and 1°≤b≤45°.

[0109] In this way, during the reciprocating movement of the nozzle module 301 relative to the first cleaning member 20 along the movement direction N2, the bottom surface of the nozzle 302 moves along the inclined direction of the first contact surface P1 or the inclined direction of the second contact surface P2, which can reduce the friction between the nozzle 302 and the cleaning surface P, and further reduce the wear of the nozzle 302 during cleaning. At the same time, the first contact surface P1 and the second contact surface P2 can also guide the nozzle 302, thereby improving the movement stability of the nozzle 302 and ensuring the cleaning reliability of the consumables or dust and other foreign matters.

[0110] When the first inclination angle a is less than 1°, the first contact surface P1 is substantially parallel to the first moving direction N21, and the guiding effect and the cleaning effect are poor. When the first inclination angle a is greater than 45°, the first contact surface P1 will limit the movement of the nozzle 302, and the risk of stopping the movement or being stuck of the nozzle 302 is high, which is not conducive to the smooth completion of the cleaning action of the nozzle 302. When the second inclination angle β is less than 1°, the second contact surface P2 is substantially parallel to the second moving direction N22, and the guiding effect and the cleaning effect are poor. When the second inclination angle β is greater than 45°, the second contact surface P2 will limit the movement of the nozzle 302, and the risk of stopping the movement or being stuck of the nozzle 302 is high, which is not conducive to the smooth completion of the cleaning action of the nozzle 302.

[0111] In some embodiments, 1°≤a≤30°. Limiting the first inclination angle a to within 30° can further reduce the possibility of the nozzle 302 being stuck, and a lower slope can improve the guiding effect on the movement of the nozzle 302.

[0112] In some embodiments, 1°≤β≤30°. Limiting the second inclination angle β to within 30° can further reduce the possibility of the nozzle 302 being stuck, and a lower slope can improve the guiding effect on the movement of the nozzle 302.

[0113] In some embodiments, a=β, so that when the nozzle 302 moves back and forth along the first moving direction N21 and the second moving direction N22 multiple times, the movement of the nozzle 302 relative to the first cleaning piece 20 is stable and is not prone to shaking problems, thereby improving the cleaning stability.

[0114] In some embodiments, referring to FIG. 11, the first contact surface P1 and the second contact surface P2 are both flat surfaces, and the first contact surface P1 and the second contact surface P2 are directly connected and configured as a triangle on the cross section of the first cleaning piece 20. In this way, the guiding effect of the first contact surface P1 and the second contact surface P2 on the nozzle 302 can be improved, and by adjusting the included angle between the first contact surface P1 and the horizontal plane and the included angle between the second contact surface P2 and the horizontal plane, the friction between the nozzle 302 and the cleaning surface P can be further reduced.

[0115] In some embodiments, referring to FIG. 12, the cleaning surface P further includes a third contact surface P3. The first contact surface P1 and the second contact surface P2 are connected through the third contact surface P3. During the reciprocating movement of the nozzle 302, the third contact surface P3 can guide and buffer the movement of the nozzle 302 to a certain extent, and also provide a certain cleaning effect. In this embodiment, the third contact surface P3 is a flat surface, and the third contact surface P3 is parallel to the moving direction N2.

[0116] In another embodiment, referring to FIG. 13, the third contact surface P3 is an arc surface, which is convex in the direction opposite to the discharge direction N1, and the arc surface can be configured as a concave arc surface. In other embodiments, the arc surface can also be concave in the discharge direction N1 to the inside of the first cleaning member 20. In other embodiments, the shape of the first contact surface P1 and the shape of the second contact surface P2 can also be configured as a curved surface, a special-shaped surface, and the like.

[0117] In some embodiments, referring to FIG. 14, the surface of the first cleaning member 20 is provided with a concave cutout K4 in the discharge direction N1, and the surface of the cutout K4 is configured as a cleaning surface P. The cutout K4 is roughly V-shaped. The surface of the cutout K4 includes the first contact surface P1 and the second contact surface P2. The first contact surface P1 is arranged to be inclined with respect to the first movement direction N21, and the second contact surface P2 is arranged to be inclined with respect to the second movement direction N22. When the nozzle 302 needs to be cleaned, the nozzle head module 301 is moved to above the cutout K4 by the transfer device 303, and the nozzle 302 is extended into the cutout K4 along the discharge direction N1, and then the transfer device 303 drives the nozzle 302 to move back and forth in the cutout K4 along the first movement direction N21 and the second movement direction N22, so as to realize the multiple rubbing of the nozzle 302 with the first contact surface P1 and the second contact surface P2, thereby realizing the cleaning of the first area 3021 of the nozzle 302.

[0118] In some embodiments, the cutout K4 is formed by cutting at least a portion of the length direction of the first cleaning member 20, which can be located at the two ends or the middle of the length direction of the first cleaning member 20. In other embodiments, the cutout K4 can also extend through the first cleaning member 20 along the length direction of the first cleaning member 20, thereby facilitating the discharge of consumables or dust from the cutout K4 along the two ends of the length direction of the first cleaning member 20. In this case, the moving direction N2 and the discharging direction N1 have a coplanar plane, and the length direction of the first cleaning member 20 is perpendicular to or intersects the coplanar plane. In some embodiments, referring to FIGS. 9 and 10, the nozzle 302 is further configured to move in a second preset area A2 to clean the outer peripheral surface of the nozzle 302 by a second cleaning member 30. The second cleaning member 30 includes a bottom 31 and a plurality of cleaning protrusions 32. The bottom 31 is provided on the mounting member 10. The plurality of cleaning protrusions 32 are provided on the bottom 31, and each cleaning protrusion 32 includes a fourth contact surface P4 configured to contact and wipe the outer peripheral surface of the nozzle 302 when the nozzle 302 moves in the second preset area A2. In some embodiments, the fourth contact surface P4 includes the side surface and the top surface of the cleaning protrusion 32. In this case, the second preset area A2 is also configured to have a certain height, and the top surface of the second preset area A2 is offset from the set plane by 0.1 mm to 0.5 mm, and the bottom surface of the second preset area A2 is offset from the set plane by 0.1 mm to 0.5 mm. The fourth contact surface P4 is located on the side of the top surface of the second preset area A2 away from the top surface or apex of the printing platform 305 in the Z direction, or coincides with the top surface of the second preset area A2.

[0119] In some embodiments, the theoretical set plane is flush with the bottom surface of the nozzle 302, and the movement of the nozzle 302 in the second preset area A2 means that the bottom surface of the nozzle 302 moves within the second preset area A2. Due to the assembly error, the error range of the bottom surface during the movement of the nozzle 302 is within the second preset area A2.

[0120] Since the cleaning protrusions 32 are provided in plurality, the outer peripheral surface of the nozzle 302 can be in contact with the fourth contact surface P4 during the movement of the nozzle 302 in the second preset area A2, so that the fourth contact surface P4 can wipe the outer peripheral surface of the nozzle 302, thereby improving the cleaning effect of the outer peripheral surface of the nozzle 302.

[0121] In some embodiments, the movement trajectory of the nozzle 302 is to move in the four directions of front, back, left and right of the fourth contact surface P4 of the second cleaning member 30 within the second preset area A2. For example, the movement trajectory of the nozzle 302 can be a straight one-way movement trajectory, a straight back-and-forth movement trajectory, a meandering S-shaped trajectory, a circular trajectory, or a special-shaped trajectory moving back and forth in different directions, etc.

[0122] In some embodiments, referring to FIGS. 9 and 10, the plurality of cleaning protrusions 32 are spaced from each other and form a plurality of cleaning grooves 33 enclosed by a plurality of fourth contact surfaces P4. The plurality of cleaning grooves 33 are formed on the second cleaning member 30. In this way, the groove surfaces of the cleaning grooves 33 are the plurality of fourth contact surfaces P4. When the nozzle 302 moves in the cleaning grooves 33, the cleaning protrusions 32 on both sides of the cleaning grooves 33 can wipe the outer circumferential surface of the nozzle 302 when the nozzle 302 is moved along the cleaning grooves 33 under the driving of the transfer device 303. The cleaning protrusions 32 can scrape off the foreign matters such as the consumables or dust and make the foreign matters move to the outside of the cleaning grooves 33 under the force, thereby achieving the cleaning of the foreign matters such as the consumables or dust.

[0123] In some embodiments, referring to FIGS. 9 and 10, the plurality of cleaning protrusions 32 are arrayed on the side of the bottom 31 away from the mounting member 10. The plurality of cleaning protrusions 32 form a plurality of cleaning grooves 33 which are arrayed and connected to each other.

[0124] In some embodiments, the nozzle 302 can be reciprocally moved along the X direction relative to the second cleaning member 30 under the driving of the transfer device 303, so as to improve the cleaning reliability. In other embodiments, since the nozzle module 301 can be moved relative to the cleaning mechanism 100 under the driving of the X-axis transfer assembly 3031 and the Y-axis transfer assembly 3032. Therefore, the moving track of the nozzle 302 relative to the second cleaning member 30 can also be a bent line, a circular line, a meandering S shape or other tracks, so as to achieve the cleaning effect of the side surface of the nozzle 302 on the foreign matters such as the consumables or dust.

[0125] In some embodiments, referring to FIG. 10, the mounting seat 11 further has a mounting groove 13. The mounting groove 13 is spaced from the connecting lug 14. The second cleaning member 30 is detachably mounted in the mounting groove 13, so as to facilitate the replacement of different second cleaning members 30.

[0126] In some embodiments, referring to FIGS. 8 and 9, the mounting member 10 includes an extension 15. The extension 15 is connected to the mounting seat 11 and extends away from the discharge inlet K1 along the X direction. The mounting groove 13 is formed in the extension 15. In this way, the integration of the consumable recycling device 200 can be improved, so as to make full use of the space outside the discharge passage Q to mount the second cleaning member 30.

[0127] In some embodiments, referring to FIG. 8, the cleaning mechanism 100 further includes a clamping member 50 and an elastic member 40. The clamping member 50 is arranged at the discharge inlet K1.

[0128] In some embodiments, referring to FIG. 8, the engaging member 50 is integrally formed with the second wall segment 622. In other embodiments, the engaging member 50 can also be independent of the second wall segment 622 and connected to the second wall segment 622 by screwing, clamping or welding, etc. so that the cleaning mechanism 100 can be installed as a separate mechanism at different positions of the 3D printer 300, for example, the cleaning mechanism 100 can be installed at other positions on the rack 304 of the 3D printer 300, improving the application range of the cleaning mechanism 100.

[0129] Further referring to FIG. 15, the elastic member 40 is elastically supported between the mounting member 10 and the engaging member 50. The elastic member 40 is configured to enable the mounting member 10 to approach or move away from the engaging member 50. Also, the positions of the first cleaning member 20 and the second cleaning member 30 are configured to be higher than the bottom surface of the nozzle 302 in the Z direction. In this way, when the nozzle 302 contacts the first cleaning member 20 and / or the second cleaning member 30, the elastic member 40 applies an elastic force to the first cleaning member 20 through the mounting member 10, so that the first cleaning member 20 can be pressed against the bottom surface of the nozzle 302, improving the force applied by the first cleaning member 20 to the nozzle 302, and further improving the cleaning effect on the foreign matter at the bottom surface of the nozzle 302. At the same time, the elastic member 40 applies an elastic force to the second cleaning member 30 through the mounting member 10, so that the plurality of cleaning protrusions 32 of the second cleaning member 30 can be pressed against the side surface of the nozzle 302, improving the cleaning effect on the foreign matter at the side surface of the nozzle 302. In addition, the elastic member 40 can also provide a certain buffering effect to avoid the nozzle module 301 crushing the cleaning mechanism 100, and enable the cleaning mechanism 100 to better adapt to the movement of the nozzle module 301, simplifying the movement control logic of the nozzle module 301 by the transfer device 303 in the cleaning action of the nozzle 302. Reduce the assembly precision requirement of the cleaning mechanism 100, and improve the application range of the cleaning mechanism 100.

[0130] In some embodiments, referring to FIG. 9, the cross section of the cleaning protrusion 32 gradually increases in the direction close to the bottom 31, and the cross section of the cleaning groove 33 gradually decreases in the direction away from the bottom 31, so that when the second cleaning member 30 is pressed against the side surface of the nozzle 302 by the elastic force, the pressing force of the plurality of cleaning protrusions 32 on the side surface of the nozzle 302 is greater, further improving the cleaning effect.

[0131] In some embodiments, the elastic member 40 can be a compression spring. In other embodiments, the elastic member 40 can also be a tension spring, a high-elasticity rubber sheet or other elastic structure.

[0132] In some embodiments, referring to FIGS. 15 and 16, the engaging member 50 is provided with a guide groove 52. The mounting member 10 further comprises a connecting portion 17 configured to movably fit in the guide groove 52, and the elastic member 40 is elastically supported between the connecting portion 17 and the groove bottom surface of the guide groove 52. In this way, by making full use of the space of the guide groove 52, the size of the cleaning mechanism 100 in the Z direction can be reduced. Meanwhile, by the cooperation of the connecting portion 17 and the guide groove 52, the movement of the mounting member 10 relative to the engaging member 50 can be guided, and the possibility of the nozzle 302 driving the mounting member 10 out of the engaging member 50 when the nozzle 302 moves back and forth in the X direction can be greatly reduced, thereby improving the working stability of the cleaning mechanism 100.

[0133] In some embodiments, referring to FIG. 16, the engaging member 50 comprises a guide surrounding wall 51 surrounding the guide groove 52, and the guide surrounding wall 51 is provided with an engaging hole 53 communicating with the guide groove 52. The side surface of the mounting member 10 is provided with an engaging elastic arm 16, and the free end of the engaging elastic arm 16 is provided with an engaging protrusion 161 which is clamped in the engaging hole 53 and abuts against the guide surrounding wall 51. In this way, the cooperation of the engaging protrusion 161 and the engaging hole 53 can further improve the connection stability of the mounting member 10 and the engaging member 50, and further reduce the possibility of the mounting member 10 being driven out of the engaging member 50. In addition, the engaging protrusion 161 can also prevent the mounting member 10 from being driven out of the guide groove 52 under the elastic force of the elastic member 40, and the elastic member 40 can provide an elastic force to the mounting member 10, so as to further improve the size of the elastic force provided by the elastic member 40 to the first cleaning member 20 and the second cleaning member 30 during the cleaning process, thereby improving the cleaning effect.

[0134] In some embodiments, referring to FIG. 15, the length of the engaging hole 53 in the Z direction is greater than the length of the engaging protrusion 161 in the Z direction, so that the engaging hole 53 provides a movable space in the Z direction.

[0135] In some embodiments, the circumferential direction of the guide surrounding wall 51 can be provided with a plurality of engaging holes 53, and the circumferential side of the mounting member 10 can be provided with a plurality of engaging elastic arms 16, so as to further improve the connection stability between the mounting member 10 and the engaging member 50.

[0136] In some embodiments, the number of guide grooves 52 can be two, and the number of connecting portions 17 can be two.

[0137] In some embodiments, referring to FIGS. 15 and 17, the connecting portion 17 comprises a cooperating surrounding wall 171 provided with a cooperating groove 172, and one end of the elastic member 40 extends into the cooperating groove 172 and abuts against the mounting seat 11. In this way, the size of the mounting member 10 and the engaging member 50 in the Z direction can be further reduced, thereby improving the application range of the cleaning mechanism 100.

[0138] In some embodiments, referring to FIG. 17, one side of the fitting surrounding wall 171 is provided with a fitting opening 173, and the clamping elastic arm 16 is connected to the fitting surrounding wall 171 and located in the fitting opening 173 to realize the elastic connection between the clamping elastic arm 16 and the connecting part 17, thereby improving the assembly convenience of the mounting piece 10 on the clamping piece 50.

[0139] The above embodiments are only used to illustrate the technical solutions of the present application but not limit the present application. Although the present application has been described in detail with reference to the above preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or equivalently replaced without departing from the spirit and scope of the present application.

Claims

1. A cleaning mechanism for cleaning a nozzle of a 3D printer, the nozzle having a feed end and a discharge opening, characterized by, Comprising: a first cleaning member configured to clean foreign matter at a first region of the nozzle; a second cleaning member configured to clean foreign matter at a second region of the nozzle; wherein the first region is a region close to a discharge port of the nozzle, and the second region is a region close to a peripheral side portion of the nozzle.

2. The cleaning mechanism according to claim 1, wherein: the nozzle is configured to move in a first predetermined region to be cleaned by the first cleaning member; the first cleaning member has a cleaning surface at least partially located in the first predetermined region, the cleaning surface comprising opposite first and second contact surfaces, the first contact surface being configured to clean foreign matter at the first region of the nozzle in a first moving direction of the nozzle, and the second contact surface being configured to clean foreign matter at the first region of the nozzle in a second moving direction of the nozzle.

3. The cleaning mechanism according to claim 2, wherein: the first contact surface is directly connected to the second contact surface, or the first contact surface is connected to the second contact surface through a third contact surface selected from any one of a plane, an arc surface, or an irregular surface.

4. The cleaning mechanism according to any one of claims 1 to 3, wherein: the first cleaning member is configured as a tubular structure, and the first and second contact surfaces are smoothly connected arc surfaces.

5. The cleaning mechanism according to any one of claims 2 or 3, wherein: the first contact surface is arranged obliquely with respect to the first moving direction, and has a first oblique angle with respect to the first moving direction, the first oblique angle being 1°-45°; and the second contact surface is arranged obliquely with respect to the second moving direction, and has a second oblique angle with respect to the second moving direction, the second oblique angle being 1°-45°.

6. The cleaning mechanism according to claim 5, wherein: the first contact surface is directly connected to the second contact surface to form a triangle on a cross section of the first cleaning member; or the first contact surface is connected to the second contact surface through a third contact surface.

7. The cleaning mechanism according to any one of claims 1 to 6, wherein: the nozzle is configured to move in a second predetermined region to be cleaned by the second cleaning member, the second region being a peripheral surface of the nozzle; the second cleaning member comprises a plurality of cleaning protrusions, each of the cleaning protrusions comprising a fourth contact surface configured to contact and wipe the peripheral surface when the nozzle moves in the second predetermined region.

8. The cleaning mechanism according to claim 7, wherein: adjacent cleaning protrusions are spaced apart from each other to form a cleaning groove enclosed by the plurality of fourth contact surfaces; a plurality of cleaning grooves are formed on the second cleaning member to clean all of the peripheral surface of the nozzle. the cleaning mechanism further comprises:

9. The cleaning mechanism of any one of claims 1 to 8, wherein, ​ a mounting member connecting the first cleaning member and the second cleaning member; a resilient member elastically connected to the mounting member and configured to provide an elastic force for resetting the cleaning mechanism.

10. The cleaning mechanism according to claim 9, wherein: the mounting member further comprises a connecting portion configured to connect the 3D printer, and the resilient member is connected to the connecting portion and the 3D printer respectively.

11. The cleaning mechanism according to claim 9 or 10, wherein: a side surface of the mounting member is provided with a clamping elastic arm, a free end of the clamping elastic arm is provided with a clamping protrusion configured to be connected with a buckle of the 3D printer for mounting.

12. A consumable recycling device for recycling a consumable of a 3D printer, characterized in that, comprising: a discharging member provided with a discharging inlet, a discharging outlet and a discharging channel connecting the discharging inlet and the discharging outlet; the cleaning mechanism according to any one of claims 1 to 11, or the consumable recycling device according to any one of claims 12 to 17.

13. The consumable recycling device according to claim 12, wherein: the consumable recycling device further comprises a clamping member provided at the discharging inlet, and the first cleaning member and the second cleaning member are movably connected to the clamping member.

14. The consumable recycling device according to claim 12, wherein: the consumable recycling device further comprises a receiving member provided at the discharging inlet, the receiving member comprising a receiving baffle configured to be rotatable relative to the discharging member between a first position and a second position; wherein, in the first position, the receiving baffle covers at least part of the discharging inlet to receive the consumable discharged from the nozzle, and in the process of rotating to the second position, the receiving baffle is configured to make the consumable fall into the discharging channel.

15. The consumable recycling device according to any one of claims 12 to 14, wherein: the consumable recycling device further comprises a buffer member configured to buffer the receiving baffle at least in the second position.

16. The consumable recycling device of any one of claims 12 to 14, wherein, the consumable recycling device further comprises: a rotating shaft member connected to the discharging member, the rotating shaft member being rotatably connected to one side of the receiving baffle to rotate the receiving baffle relative to the discharging member between the first position and the second position; a fixing member configured to fix the rotating shaft member to the discharging member.

17. The consumable recycling device of claim 16, wherein, the fixing member comprises an elastic support structure elastically supported between the rotating shaft member and the discharging member, the elastic support structure being configured to limit the rotating shaft member to the discharging member in the axial direction of the rotating shaft member.

18. A 3D printer characterized by, comprising: a nozzle module comprising a nozzle; the cleaning mechanism according to any one of claims 1 to 11, or the consumable recycling device according to any one of claims 12 to 17.

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