Cleaning mechanism and three-dimensional printing device using same

Abstract

The embodiment of the utility model provides a cleaning mechanism and a three-dimensional printing device applying the same. The cleaning mechanism is used for wiping a nozzle and comprises a driving part, a rotating part, a driven part and a removing part. The driving piece is configured to selectively slide; the rotating piece is in transmission fit with the driving piece, and the rotating piece is configured to rotate along with sliding of the driving piece; the driven part is in transmission fit with the rotating part, and the driven part is configured to slide along with rotation of the rotating part; the removing piece and the driven piece are in driving connection and move synchronously. The three-dimensional printing device comprises a three-dimensional printing main body, a nozzle and the cleaning mechanism, and the cleaning mechanism is connected with the three-dimensional printing main body and is adjustable relative to the position of the nozzle so as to wipe the nozzle.

Description

Technical Field

[0001] This application relates to the field of stereoscopic printing, and more particularly to a cleaning mechanism and a stereoscopic printing apparatus using the same. Background Technology

[0002] 3D printing is a rapid prototyping technology that uses digital model files as a basis and employs special waxes, powdered metals, or plastics and other bondable materials to create three-dimensional objects by printing layers of material. Fused deposition modeling (FDM) is one of the main 3D printing technologies. This technology involves heating and melting a filament, extruding it through a nozzle, and depositing it onto a forming platform or a previously solidified layer of material to ultimately create the object. Among technologies using plastic filaments, fused filament deposition is common. In this process, a filament of printing material is fed into a heated head, heated and melted, and then extruded through a nozzle, allowing the material to cool and solidify to form the product. However, during the extrusion process, some material may remain at the extrusion end of the nozzle, potentially causing nozzle clogging and reduced printing accuracy. How to solve these problems is a question that those skilled in the art need to consider. Utility Model Content

[0003] To address the problems in the prior art, embodiments of this application provide a cleaning mechanism and a stereoscopic printing apparatus using the same.

[0004] This application provides a cleaning mechanism for wiping a nozzle, comprising a driving member, a rotating member, a driven member, and a cleaning member. The driving member is configured to slide selectively; the rotating member is driven to rotate in response to the sliding of the driving member; the driven member is driven to slide in response to the rotation of the rotating member; and the cleaning member is driven to move synchronously with the driven member.

[0005] Understandably, in the cleaning mechanism provided in this application embodiment, the driving member is configured to slide, allowing it to slide under drive (e.g., pushed by a nozzle impact). The driving member has a relative displacement with respect to the rotating member, causing the rotating member to rotate. This rotation further drives the cleaning member to slide, thereby cleaning the nozzle. The rotating member and the driving member are connected by a tongue-and-groove fit, and the driven member and the rotating member are also connected by a tongue-and-groove fit. Compared to conventional linkage transmission, the cleaning mechanism provided in this application embodiment has a more compact structure. Compared to conventional rack and pinion transmission, the cleaning mechanism provided in this application embodiment has greater adjustment space (i.e., better adaptability) and can be adapted to extruders of different widths.

[0006] In one embodiment, the driving member and the rotating member are connected by a concave-convex fit, and the rotating member and the driven member are connected by a concave-convex fit. The driving member, the rotating member and the driven member are arranged side by side in sequence.

[0007] In one embodiment, the outer periphery of the rotating member is provided with a first guide groove and a second guide groove that extend spirally and are spaced apart. The spiral extension direction of the first guide groove is opposite to the spiral extension direction of the second guide groove. The driving member is in a transmission engagement with the first guide groove, and the driven member is in a transmission engagement with the second guide groove. Alternatively, the outer periphery of the rotating member is provided with a first guide protrusion and a second guide protrusion that extend spirally and are spaced apart. The spiral extension direction of the first guide protrusion is opposite to the spiral extension direction of the second guide protrusion. The driving member is in a transmission engagement with the first guide protrusion, and the driven member is in a transmission engagement with the second guide protrusion.

[0008] In one embodiment, the driving member is configured to slide along a first direction, the driven member is configured to slide along a direction opposite to the first direction, and the rotating member is configured to rotate along a rotation axis, the extension direction of which is parallel to the first direction.

[0009] In one embodiment, the rotating member includes a column, a first rotation guide portion, and a second rotation guide portion; the column is configured to rotate, and the column includes an outer peripheral surface surrounding the rotation axis; the first rotation guide portion is disposed on the outer peripheral surface and drives the driving member; the second rotation guide portion is disposed on the outer peripheral surface and drives the driven member; wherein the first rotation guide portion and the second rotation guide portion are respectively convex or concave relative to the outer peripheral surface, and the guiding direction of the first rotation guide portion is different from the guiding direction of the second rotation guide portion.

[0010] In one embodiment, the extension trajectory of the first rotation guide and the extension trajectory of the second rotation guide are symmetrically arranged about a plane of symmetry, and the rotation axis is located in the plane of symmetry; or, the extension trajectory of the first rotation guide and the extension trajectory of the second rotation guide are both straight lines or both curves.

[0011] In one embodiment, the driving member is provided with a first sliding guide portion, and the rotating member is provided with a first rotating guide portion. The first sliding guide portion and the first rotating guide portion are connected in a concave-convex fit manner. The first sliding guide portion is provided with a protrusion and the first rotating guide portion is provided with a recess, or the first sliding guide portion is provided with a recess and the first rotating guide portion is provided with a protrusion.

[0012] In one embodiment, the driven member is provided with a second sliding guide portion, and the rotating member is provided with a second rotating guide portion. The second sliding guide portion and the second rotating guide portion are connected in a concave-convex fit manner. The second sliding guide portion is provided with a protrusion and the second rotating guide portion is provided with a recess, or the second sliding guide portion is provided with a recess and the second rotating guide portion is provided with a protrusion.

[0013] In one embodiment, the cleaning mechanism further includes a support, the driving member and the driven member are slidably connected to the support, the rotating member is rotatably connected to the support, and the rotating member is disposed between the driving member and the driven member.

[0014] In one embodiment, the cleaning mechanism further includes a reset member connected to the driving member or the driven member, for driving the driving member, the rotating member and the driven member to reset.

[0015] In one embodiment, the cleaning mechanism further includes a bracket, the driving member and the driven member are slidably connected to the bracket, and the reset member is an elastic member; when the reset member is connected to the driving member, one end of the reset member is connected to the driving member and the other end is connected to the bracket; when the reset member is connected to the driven member, one end of the reset member is connected to the driven member and the other end is connected to the bracket.

[0016] In one embodiment, the cleaning member includes a pusher portion comprising two protruding and spaced-apart limiting plates, the gap between the two limiting plates being configured to allow a nozzle to pass through for cleaning the nozzle.

[0017] This application also provides a stereo printing apparatus, which includes a stereo printing body, a nozzle, and a cleaning mechanism as described in any of the foregoing embodiments. The cleaning mechanism is connected to the stereo printing body and its position relative to the nozzle is adjustable to wipe the nozzle.

[0018] It is understood that the 3D printing device provided in this application embodiment has a sophisticated and stable cleaning mechanism. The cleaning component can be driven to perform cleaning operations by the mutual interlocking of the driving component, the rotating component, and the driven component, without the need for complex driving settings. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of a cleaning mechanism provided in an embodiment of this application.

[0020] Figure 2 This is a partial perspective view of a cleaning mechanism provided in an embodiment of this application.

[0021] Figure 3This is a partial perspective view of a cleaning mechanism provided in an embodiment of this application.

[0022] Figure 4 This is a three-dimensional schematic diagram showing the driving component, rotating component, driven component, and resetting component of the cleaning mechanism provided in the embodiments of this application in a coordinated state.

[0023] Figure 5 This is a perspective view of the rotating component of a cleaning mechanism provided in an embodiment of this application.

[0024] Figure 6 for Figure 5 The corresponding trajectory unfolding diagram.

[0025] Figure 7 A schematic diagram of the rotating component of a cleaning mechanism provided in another embodiment of this application.

[0026] Figure 8 for Figure 7 The corresponding trajectory unfolding diagram.

[0027] Figure 9 This is a partial perspective view of a cleaning mechanism provided in an embodiment of this application.

[0028] Figure 10 This is a three-dimensional schematic diagram of the three-dimensional printing apparatus provided in the embodiments of this application.

[0029] Explanation of main component symbols

[0030] Cleaning agency 10

[0031] Bracket 11

[0032] Cavity 110

[0033] Connector 111

[0034] Via 1111

[0035] Mounting bracket 112

[0036] First guide bar 1121

[0037] Second guide bar 1122

[0038] Rotating end 1123

[0039] Shaft 1124

[0040] Guide rack 113

[0041] Feed chute 1130

[0042] Drive component 12

[0043] First sliding guide 121

[0044] Drive lever 122

[0045] Rotating component 13

[0046] First rotation guide 131

[0047] Second rotation guide 132

[0048] Column 133

[0049] Driven component 14

[0050] Second sliding guide 142

[0051] Receiving part 15

[0052] Reception 151

[0053] Material receiving chamber 1510

[0054] Base plate 1511

[0055] Side panel 1512

[0056] Material receiving connection part 152

[0057] Cleaning part 16

[0058] Sliding connection part 161

[0059] Bridging part 162

[0060] Pushing section 163

[0061] Limit plate 1631

[0062] Reset component 17

[0063] 3D printing device 1

[0064] Base 191

[0065] Gantry Frame 192

[0066] Nozzle 193

[0067] Linear drive component 194

[0068] First direction X

[0069] Second direction Y

[0070] Third direction Z

[0071] Rotation axis R

[0072] Symmetric plane P

[0073] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this application. Detailed Implementation

[0074] The following description will be given with reference to the accompanying drawings for a more complete description of the present application. The drawings illustrate exemplary embodiments of the present application. However, the present application may be implemented in many different forms and should not be construed as limited to the exemplary embodiments set forth herein. These exemplary embodiments are provided to make the present application thorough and complete, and to fully convey the scope of the present application to those skilled in the art. Similar reference numerals denote the same or similar components. The terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to limit the present application. As used herein, the singular forms “a,” “an,” and “the” are intended to also include the plural forms unless the context clearly indicates otherwise. Furthermore, when used herein, “comprising” and / or “including” and / or “having,” integers, steps, operations, components, and / or components, but without excluding the presence or addition of one or more other features, regions, integers, steps, operations, components, and / or groups thereof. Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. Furthermore, unless explicitly defined herein, terms such as those defined in a general dictionary should be interpreted as having the same meaning as they have in the relevant technology and in the content of this application, and should not be interpreted as having an idealized or overly formal meaning.

[0075] Typically, 3D printing is a rapid prototyping technology that uses digital model files as a basis and employs adhesive materials such as special waxes, powdered metals, or plastics to create three-dimensional objects by printing layers of material. Fused deposition modeling (FDM) is one of the main 3D printing technologies. This technology involves heating and melting a filament, extruding it through a nozzle, and depositing it onto a forming platform or a previously solidified layer of material to ultimately create the object. Among technologies using plastic filaments, fused filament deposition is common. In this process, a filament of printing material is fed into a heated head, heated and melted, and then extruded through a micro-nozzle, allowing the material to cool and solidify to form the product. However, during the extrusion process, some material may remain at the extrusion end of the nozzle, potentially causing nozzle clogging and reduced printing accuracy.

[0076] Correspondingly, this application provides a cleaning mechanism and a stereoscopic printing apparatus using the same. The cleaning mechanism is used to wipe the nozzle and includes a driving member, a rotating member, a driven member, and a cleaning member. The driving member is configured to slide selectively; the rotating member is in a transmission engagement with the driving member and is configured to rotate following the sliding of the driving member; the driven member is in a transmission engagement with the rotating member and is configured to slide following the rotation of the rotating member; the cleaning member is drivenly connected to the driven member and moves synchronously. The stereoscopic printing apparatus includes a stereoscopic printing body, a nozzle, and the cleaning mechanism. The cleaning mechanism is connected to the stereoscopic printing body and its position relative to the nozzle is adjustable to wipe the nozzle.

[0077] Furthermore, in the cleaning mechanism provided in this application embodiment, the driving member is configured to slide, allowing it to slide under drive (e.g., pushed by a nozzle impact). The driving member has a relative displacement with respect to the rotating member, causing the rotating member to rotate. This rotation further drives the cleaning member to slide, thereby cleaning the nozzle. The rotating member and the driving member are connected in a convex-concave fit, as is the driven member and the rotating member. This connection eliminates the need for a transmission rod, resulting in a more compact structure, and eliminates gear meshing, leading to more stable transmission. Moreover, compared to conventional linkage transmission, the cleaning mechanism provided in this application embodiment achieves a more compact structure. Compared to conventional rack and pinion transmission, the cleaning mechanism provided in this application embodiment offers greater adjustment space (i.e., better adaptability), accommodating extruders of varying widths. While increasing the clearance of a rack and pinion can cause leverage, the convex-concave fit connection and transmission in the cleaning mechanism provided in this application embodiment maintains a consistent 1:1 input-output ratio. The 3D printing device provided in this application has a cleverly designed and stable cleaning mechanism. The cleaning component can be driven to perform cleaning operations by the mutual interlocking of the driving component, the rotating component, and the driven component, without the need for complex driving settings.

[0078] The following description, in conjunction with the accompanying drawings, illustrates exemplary embodiments. It should be noted that components depicted in the drawings are not necessarily shown to scale; and identical or similar components will be designated with the same or similar reference numerals or similar technical terms.

[0079] The specific embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0080] like Figures 1 to 4As shown, this application embodiment provides a cleaning mechanism 10 for wiping the nozzle 193 of a stereolithography device 1. The cleaning mechanism 10 includes a support 11, a drive member 12, a rotating member 13, a driven member 14, a reset member 17, a cleaning member 16, and a receiving member 15. The cleaning mechanism 10 is connected to the gantry 192 and / or linear drive assembly 194 of the stereolithography device 1 via the support 11, allowing the cleaning mechanism 10 to approach or move away from the nozzle 193 of the stereolithography device 1 to achieve waste recycling. The drive member 12, rotating member 13, and driven member 14 are respectively connected to the support 11 and movably arranged relative to the support 11, while the receiving member 15 is connected to the support 11 and fixedly arranged. The drive member 12 is used for separable contact with an external mechanism for being driven; the rotating member 13 is drive-connected to the drive member 12; the driven member 14 is drive-connected to the rotating member 13; and the cleaning member 16 is connected to the driven member 14 and can move integrally. The driving member 12 is driven to move, which in turn drives the cleaning member 16 to move relative to the receiving member 15. The resetting member 17 is connected to the driving member 12 or the driven member 14, so that the resetting member 17 can accumulate force due to the movement of the driving member 12, and release the accumulated force after the external force driving the resetting member 17 is removed or weakened, so as to drive the driving member 12, the rotating member 13 and the driven member 14 to reset.

[0081] In one embodiment, the drive member 12 is configured to slide selectively. The rotating member 13 is driven by the drive member 12 and is configured to rotate following the sliding of the drive member 12. The driven member 14 is driven by the rotating member 13 and is configured to slide following the rotation of the rotating member 13. The clearing member 16 is drivenly connected to the driven member 14 and moves synchronously.

[0082] In one embodiment, the rotating member 13 and the driving member 12 are connected by a concave-convex fit, and the driven member 14 and the rotating member 13 are connected by a concave-convex fit. The driving member 12, the rotating member 13 and the driven member 14 are arranged side by side in sequence.

[0083] In one embodiment, the transmission ratio between the rotating member 13 and the driving member 12 is 1:1, and the transmission ratio between the driven member 14 and the rotating member 13 is 1:1.

[0084] Understandably, in the cleaning mechanism 10 provided in this application embodiment, the driving member 12 is configured to slide, allowing the driving member 12 to slide under drive (e.g., by being pushed by the nozzle 193). The driving member 12 is relatively displaced relative to the rotating member 13, causing the driving member 12 to rotate, which in turn drives the cleaning member 16 to slide, thereby cleaning the nozzle 193. The rotating member 13 and the driving member 12 are connected by a convex-concave fit, and the driven member 14 is also connected to the rotating member 13 by a convex-concave fit. Compared to a typical linkage transmission method, the cleaning mechanism 10 provided in this application embodiment can achieve a more compact structure. Compared to a typical gear and rack transmission method, the cleaning mechanism 10 provided in this application embodiment has a larger adjustment space (i.e., better adaptability) and can be adapted to more extruders of different widths.

[0085] For ease of understanding, the embodiments of this application introduce a first direction X, a second direction Y, and a third direction Z for description. The first direction X, the second direction Y, and the third direction Z are three non-parallel directions in a spatial coordinate system. In subsequent embodiments, the first direction X, the second direction Y, and the third direction Z are described as three mutually perpendicular reference directions in a three-dimensional Cartesian coordinate system. The directions shown in the embodiments of this application are used to help understand the relative positions of the components, but do not limit their specific directions.

[0086] In one embodiment, the support 11 includes a connecting frame 111, a mounting frame 112, and a guide frame 113. The connecting frame 111 is used to connect to the gantry 192 and / or the linear drive assembly 194 of the stereolithography device 1; the mounting frame 112 is connected to the connecting frame 111 and cooperates to form a cavity 110. The driving member 12, the rotating member 13, the driven member 14, and the resetting member 17 are all disposed in the cavity 110 and connected to the mounting support 11. The cleaning member 16 is connected to the driven member 14 and extends out of the cavity 110. The receiving member 15 is connected to the mounting frame 112 and is located outside the cavity 110; the guide frame 113 is connected to the connecting frame 111 and the mounting frame 112. The guide frame 113 has a guide groove 1130, which is provided corresponding to the discharge end of the receiving member 15. The cleaning member 16 can push the remaining material in the receiving member 15 into the guide groove 1130.

[0087] Understandably, the bracket 11 is the main support and connection structure assembly in the cleaning mechanism 10, and it can have a corresponding suitable shape, which will not be elaborated here.

[0088] In one embodiment, the driving member 12 is configured to slide along a first direction X, the driven member 14 is configured to slide along a direction opposite to the first direction X, and the rotating member 13 is configured to rotate along a rotation axis R, the extension direction of the rotation axis R being parallel to the first direction X.

[0089] In this embodiment, the rotating member 13 is constructed to be generally cylindrical and has a rotation axis R arranged along the axial direction.

[0090] In one embodiment, the driving member 12 and the driven member 14 are slidably connected to the bracket 11, and the rotating member 13 is rotatably connected to the bracket 11, with the rotating member 13 disposed between the driving member 12 and the driven member 14.

[0091] In this embodiment, the driving member 12, the rotating member 13, the driven member 14, and the clearing member 16 are arranged sequentially along the second direction Y. The driving member 12 and the driven member 14 are spaced apart along the second direction Y, and the rotating member 13 is disposed between the driving member 12 and the driven member 14 along the second direction Y.

[0092] In this embodiment, the mounting bracket 112 has a first guide bar 1121 and a second guide bar 1122 extending along the first direction X, respectively, on its inner side. The bottom end of the driving member 12 is engaged with the outer periphery of the first guide bar 1121, allowing the driving member 12 to slide along the first direction X under the guidance of the first guide bar 1121. The bottom end of the driven member 14 is engaged with the inner side of the second guide bar 1122, allowing the driven member 14 to slide along the first direction X under the guidance of the second guide bar 1122.

[0093] Understandably, the area on the inner side of the connecting frame 111 corresponding to the first guide bar 1121 and the second guide bar 1122 may also be provided with a guide bar structure extending along the first direction X, which is used to guide and cooperate with the top end of the driving member 12 and the top end of the driven member 14, thereby further improving the motion stability of the driving member 12 and the driven member 14.

[0094] In one embodiment, a through hole 1111 may be provided on the connecting frame 111, and the driving member 12 includes a driving rod 122. The driving rod 122 extends out of the cavity 110 through the through hole 1111, so that the driving member 12 can be separably contacted with the external mechanism and thus be driven.

[0095] In this embodiment, a rotating end 1123 is provided on the inner side of the mounting bracket 112, and the rotating end 1123 is disposed between the first guide bar 1121 and the second guide bar 1122 along the second direction Y. The rotating shaft 1124 is connected to the rotating end 1123 and extends along the first direction X. The rotating member 13 is cylindrical, and the rotating member 13 is sleeved on the outside of the rotating shaft 1124 and can rotate.

[0096] In one embodiment, the rotating member 13 includes a column 133, a first rotation guide portion 131, and a second rotation guide portion 132. The column 133 is configured to rotate, and includes an outer peripheral surface surrounding the rotation axis R; the first rotation guide portion 131 is disposed on the outer peripheral surface and connected to the driving member 12; the second rotation guide portion 132 is disposed on the outer peripheral surface and connected to the driven member 14. The first rotation guide portion 131 and the second rotation guide portion 132 are each convex or concave relative to the outer peripheral surface, and the guiding direction of the first rotation guide portion 131 is different from the guiding direction of the second rotation guide portion 132.

[0097] In this embodiment, the guiding direction of the first rotation guide 131 is opposite to the guiding direction of the second rotation guide 132. Specifically, the first rotation guide 131 cooperates with the drive member 12 to guide it, and the second rotation guide 132 cooperates with the driven member 14 to guide it. The drive member 12 is generally configured to be pushed along the first direction X, and the driven member 14 is generally configured to be driven in the opposite direction to the first direction X. Correspondingly, the guiding direction of the first rotation guide 131 is opposite to the guiding direction of the second rotation guide 132.

[0098] In one embodiment, the drive member 12 is provided with a first sliding guide portion 121, and the first sliding guide portion 121 is connected to the first rotation guide portion 131 in a concave-convex fit manner; the first sliding guide portion 121 is provided to protrude and the first rotation guide portion 131 is provided to be recessed, or the first sliding guide portion 121 is provided to be recessed and the first rotation guide portion 131 is provided to protrude.

[0099] In one embodiment, the driven member 14 is provided with a second sliding guide portion 142, and the second sliding guide portion 142 is connected to the second rotating guide portion 132 in a concave-convex fit manner; the second sliding guide portion 142 is provided with a protrusion and the second rotating guide portion 132 is provided with a recess, or the second sliding guide portion 142 is provided with a recess and the second rotating guide portion 132 is provided with a protrusion.

[0100] It is understandable that the driving component 12 and the rotating component 13 are connected by a concave-convex fit, and the driven component 14 and the rotating component 13 are connected by a concave-convex fit. This concave-convex fit achieves transmission by mutual squeezing and pushing between the components. The protrusion and the recess are matched to each other.

[0101] In this embodiment, the first rotation guide portion 131 and the second rotation guide portion 132 are recessed, and the first sliding guide portion 121 and the second sliding guide portion 142 are protruding, as an example. That is, the outer periphery of the rotating member 13 is provided with a first guide groove (i.e., the recessed first rotation guide portion 131) and a second guide groove (i.e., the recessed second rotation guide portion 132) that extend spirally and are spaced apart. The spiral extension direction of the first guide groove is opposite to the spiral extension direction of the second guide groove. The driving member 12 forms a transmission engagement with the first guide groove, and the driven member 14 forms a transmission engagement with the second guide groove.

[0102] In other embodiments, other engagement methods as described above may also be used. For example, the outer periphery of the rotating member 13 is provided with a first guide protrusion (i.e., a first rotation guide portion 131 with a protrusion) and a second guide protrusion (i.e., a second rotation guide portion 132 with a protrusion) that extend spirally and are spaced apart. The spiral extension direction of the first guide protrusion is opposite to that of the second guide protrusion. The driving member 12 forms a transmission engagement with the first guide protrusion, and the driven member 14 forms a transmission engagement with the second guide protrusion.

[0103] In this embodiment, the cylinder 133 of the rotating member 13 is a hollow cylinder. The cylinder 133 is sleeved on the outside of the rotating shaft 1124 and can rotate along the rotation axis R. The first rotation guide part 131 and the second rotation guide part 132 are spaced apart on the surface of the cylinder 133 and can rotate with the cylinder 133. The first sliding guide part 121 is provided on the side of the driving member 12 facing the rotating member 13 along the second direction Y. The second sliding guide part 142 is provided on the side of the driven member 14 facing the rotating member 13 along the second direction Y. The first sliding guide part 121 protrudes and extends into the first rotation guide part 131, and the second sliding guide part 142 protrudes and extends into the second rotation guide part 132. The first sliding guide 121 follows the driving member 12 to move linearly along the first direction X. The first sliding guide 121 moves relative to the first rotating guide 131, thereby squeezing the inner wall of the first rotating guide 131 and forcing the column 133 to rotate. The column 133 rotates and causes the second sliding guide 142 to move relative to the second sliding guide 142. The inner wall of the second rotating guide 132 squeezes the second sliding guide 142, driving the second sliding guide 142 to move linearly along the first direction X, which in turn drives the driven member 14 to move linearly along the first direction X. The clearing member 16 is connected to the driven member 14 and thus moves linearly along the first direction X together; and vice versa.

[0104] Understandably, the first guide groove and the second guide groove or the first guide protrusion and the second guide protrusion are formed on the outer surface of the rotating member 13. The rotating member 13 is cylindrical. From a three-dimensional perspective, the extension direction of the first guide groove and the second guide groove or the extension direction of the first guide protrusion and the second guide protrusion can be bolt-shaped. During the rotation of the rotating member 13, the driving member 12 and the driven member 14 can be guided to make linear movements.

[0105] In one embodiment, the extension trajectory of the first rotation guide 131 and the extension trajectory of the second rotation guide 132 are symmetrically arranged about the plane of symmetry P, and the rotation axis R is located in the plane of symmetry P.

[0106] Understandably, the plane of symmetry P and the axis of rotation R are both virtual spatial features used to help explain the specific structure of the rotating component 13. The plane of symmetry P is the plane where the axis of rotation R is located. During the rotation of the rotating component 13, the plane of symmetry P is constructed to rotate along with the rotating component 13, so that the extension trajectory of the first rotation guide 131 and the extension trajectory of the second rotation guide 132 can always have symmetry with respect to the plane of symmetry P, thereby ensuring that the linear motion trajectory of the first sliding guide 121 and the linear motion trajectory of the second sliding guide 142 are both kept along the first direction X.

[0107] In one embodiment, the extension trajectory of the first rotation guide 131 and the extension trajectory of the second rotation guide 132 are both straight lines or both curves.

[0108] Understandably, the extension trajectories of the first rotation guide 131 and the second rotation guide 132 can be straight lines or curves. A curve can be understood as a cosine waveform similar to a trigonometric function graph, while a straight line is a straight line. Regardless of whether the extension trajectories of the first rotation guide 131 and the second rotation guide 132 are straight lines or curves, as the rotating member 13 rotates, the first rotation guide 131 and the second rotation guide 132 always intersect the plane containing the line connecting the first sliding guide 121 and the second sliding guide 142, so as to ensure that the driving cooperation relationship among the driven member 14, the rotating member 13, and the driving member 12 can be realized.

[0109] In this embodiment, as Figure 5 As shown, the example is illustrated by showing that the extension trajectories of the first rotation guide 131 and the second rotation guide 132 are both curves; correspondingly, their trajectory unfolding diagrams are as follows. Figure 6As shown, when the driving member 12 moves from the first position A to the second position B, the driven member 14 moves from the third position C to the fourth position D. The number 1 indicates that the corresponding first position A and third position C are in the same assembly posture, and the number 2 indicates that the corresponding second position B and fourth position D are in the same assembly posture. In other embodiments, such as... Figure 7 As shown, the example is illustrated by taking the extension trajectory of the first rotation guide 131 and the extension trajectory of the second rotation guide 132 as straight lines; correspondingly, their trajectory unfolding diagram is as follows. Figure 8 As shown, when the driving member 12 moves from the first position A to the second position B, the driven member 14 moves from the third position C to the fourth position D. The extension trajectory of the first rotation guide 131 and the extension trajectory of the second rotation guide 132 are both straight lines or curves, so that the matching first sliding guide 121 and second sliding guide 142 can cooperate to perform linear movements.

[0110] In one embodiment, the receiving member 15 includes a receiving connection portion 152 and a receiving portion 151, with the receiving connection portion 152 connected to the receiving portion 151. The receiving portion 151 has a receiving cavity 1510, which is disposed through the material along a first direction X. The receiving connection portion 152 and the receiving portion 151 are arranged side by side along a second direction Y.

[0111] In this embodiment, the receiving connection part 152 is connected to the mounting frame 112. Specifically, the receiving connection part 152 is located at the bottom of the mounting frame 112 away from the connecting frame 111 along the first direction X, and the receiving part 151 is located on the side of the driven member 14 away from the rotating member 13 along the second direction Y. The receiving part 151 includes a bottom plate 1511 and two side plates 1512. The two side plates 1512 are spaced apart on both sides of the bottom plate 1511 along the second direction Y to form a receiving cavity 1510. The two side plates 1512 are spaced apart along the second direction Y, and the bottom plate 1511 is located between the two side plates 1512 along the second direction Y and is connected to the side plates 1512 on the side away from the mounting frame 112 along the third direction Z, thereby forming a receiving cavity 1510 with a cross-section that is approximately "U" shaped, so that the shape of the receiving cavity 1510 can be used to accommodate a certain volume of waste material.

[0112] In this embodiment, the receiving cavity 1510 is configured to be through-through on both sides along the first direction X; in other embodiments, the receiving cavity 1510 is configured to be through-through on at least one side along the first direction X for discharging waste material.

[0113] In one embodiment, the cleaning member 16 includes a sliding connection portion 161, a bridging portion 162, and a pushing portion 163. The sliding connection portion 161 is disposed within the cavity 110 and connected to the driven member 14 to follow the driven member 14 in linear motion along a first direction X; the bridging portion 162 is connected to the sliding connection portion 161, extends through the opening of the bracket 11, and extends from inside the cavity 110 to outside the cavity 110; the pushing portion 163 is connected to the bridging portion 162 and is disposed outside the cavity 110. The sliding connection portion 161, the bridging portion 162, and the pushing portion 163 are all generally plate-shaped. The sliding connection portion 161 and the pushing portion 163 are each connected to the bridging portion 162, and the pushing portion 163 is used to cooperate with the receiving member 15 to push materials.

[0114] In one embodiment, the portion of the cleaning member 16 located in the receiving cavity 1510 is positioned between two side plates 1512 along the second direction Y. The three sidewalls of the cleaning member 16 are configured to approximately contact the two side plates 1512 and a bottom plate 1511 to improve the efficiency of scraping waste. The pushing part 163 has two spaced-apart limiting plates 1631 protruding from the side away from the bottom plate 1511. The two limiting plates 1631 are spaced apart along the second direction Y, and the gap between the two limiting plates 1631 is configured to allow the nozzle 193 to pass through.

[0115] Understandably, in the cleaning mechanism 10 provided in this application embodiment, the receiving member 15 has a receiving cavity 1510, which can be used to receive the waste material ejected by the nozzle of the print head, to prevent the waste material from spreading, and to facilitate the centralized recycling of the waste material; the cleaning member 16 is movably disposed in the receiving cavity 1510, and can be used to cooperate with the receiving member 15 to push the waste material contained in the receiving cavity 1510, so as to achieve the cleaning and / or recycling of the waste material.

[0116] In one embodiment, the reset member 17 can be an elastic element (e.g., a tension spring). The reset member 17 is configured to extend generally along a first direction X and have two spaced ends. One end of the reset member 17 along the first direction X is connected to the mounting bracket 112, and the other end of the reset member 17 along the first direction X is connected to the driven member 14. When the driven member 14 is driven to extend, it will cause the reset member 17 to stretch. When the external force on the driven member 14 is removed, the reset member 17 retracts and causes the driven member 14 to retract and reset.

[0117] In other embodiments, the reset member 17 may be an elastic element (e.g., a compression spring). The reset member 17 is configured to extend generally along a first direction X and have two spaced ends. One end of the reset member 17 along the first direction X is connected to and / or abuts against the rear side of the drive member 12 along the first direction X, and the other end of the reset member 17 along the first direction X is connected to and / or abuts against the inner side of the bracket 11. When the drive member 12 is driven backward, it compresses the reset member 17. When the external force of the drive member 12 is removed, the reset member 17 relaxes and pushes the driven member 14 back to its original position.

[0118] In other embodiments, the reset member 17 may also be selected from other structures that can have a force and displacement conversion relationship or a structure with linear driving capability, such as a magnetic reset structure, a linear motor, etc. Those skilled in the art will understand that this is certainly achievable, and will not be elaborated here.

[0119] Simultaneously combined Figure 2 and Figure 9 As shown, the operation process of the cleaning mechanism 10 provided in this application embodiment is roughly as follows:

[0120] Cleaning stage: Drive member 12 is pushed by external structure to move along the first direction X, and first sliding guide part 121 follows drive member 12 to move linearly along the first direction X; first sliding guide part 121 moves relative to first rotating guide part 131, thereby squeezing the inner wall of first rotating guide part 131 and forcing column 133 to rotate, column 133 rotates, thereby causing second sliding guide part 142 to move relative to second sliding guide part 142; inner wall of second rotating guide part 132 squeezes second sliding guide part 142, driving second sliding guide part 142 to move linearly along the first direction X, thereby driving driven member 14 to move linearly along the first direction X, and stretching reset member 17; cleaning member 16 is connected to driven member 14 so that they move linearly together along the first direction X.

[0121] Reset Phase: The external structure of the driving member 12 is pushed to separate from the driving member 12. The reset member 17 retracts along the first direction X and pulls the driven member 14 to slide and reset along the first direction X. The driven member 14 drives the clearing member 16 to slide and reset along the first direction X. The second sliding guide 142 moves relative to the second rotating guide 132, thereby squeezing the inner wall of the second rotating guide 132 and forcing the column 133 to rotate. The rotation of the column 133 causes the first sliding guide 121 to move relative to the first sliding guide 121. The inner wall of the first rotating guide 131 squeezes the first sliding guide 121, driving the first sliding guide 121 to move linearly along the first direction X, thereby driving the driving member 12 to slide linearly along the first direction X and reset.

[0122] Further integration Figure 10As shown, this application embodiment also provides a stereoscopic printing device 1, which includes a stereoscopic printing body 19 and a cleaning mechanism 10 as in any of the foregoing embodiments. The cleaning mechanism 10 is connected to the stereoscopic printing body 19 and its position relative to the stereoscopic printing body 19 is adjustable.

[0123] In this embodiment, the 3D printing body 19 includes a gantry 192, a base 191, a nozzle 193, and a linear drive assembly 194. The gantry 192 is mounted to the base 191, the linear drive assembly 194 is connected to the gantry 192, and the nozzle 193 is movably connected to the linear drive assembly 194. A cleaning mechanism 10 is connected to one end of the linear drive assembly 194 along a first direction X or a second direction Y. The linear drive assembly 194 can drive the nozzle 193 to move along the first direction X or the second direction Y until it can detachably contact the cleaning mechanism 10, thereby achieving waste recycling and cleaning.

[0124] The operation of the stereoscopic printing device 1 provided in this application embodiment is roughly as follows: The printing module of the stereoscopic printing device 1 moves toward the cleaning mechanism 10, thereby impacting the driving member 12. The sliding of the driving member 12 causes the rotating member 13 to rotate. The rotation of the rotating member 13 synchronously drives the driven member 14 to slide toward the printing module of the stereoscopic printing device 1, thereby wiping and cleaning the nozzle 193 through the cleaning member 16. When the printing module of the stereoscopic printing device 1 moves away from the cleaning mechanism 10 and disengages from the driving member 12, under the action of the reset member 17, the driving member 12 moves in the opposite direction to the impact direction or the driven member 14 slides away from the printing module of the stereoscopic printing device 1, causing the rotating member 13 to rotate and reset, and causing the driven member 14 or the driving member 12 to slide and reset synchronously.

[0125] It is understood that the 3D printing device 1 provided in this application embodiment has a cleverly designed and stable cleaning mechanism 10. The cleaning component 16 can be driven to perform cleaning operations by the mutual interlocking of the driving component 12, the rotating component 13 and the driven component 14, without the need for complicated driving settings.

[0126] The specific embodiments of this application have been described above with reference to the accompanying drawings. However, those skilled in the art will understand that various changes and substitutions can be made to the specific embodiments of this application without departing from the spirit and scope of this application. All such changes and substitutions fall within the scope defined by this application.

Claims

1. A cleaning mechanism for wiping a nozzle of a stereolithography device, characterized in that, The utility model relates to a driving member, a rotating member, a driven member and a cleaning member, and relates to a driving mechanism and a cleaning mechanism. The driving member is configured to selectively slide; The rotating member is in transmission cooperation with the driving member, and is configured to rotate following the sliding of the driving member; The driven member is in transmission cooperation with the rotating member, and is configured to slide following the rotation of the rotating member; The cleaning member is in driving connection with the driven member and moves synchronously.

2. The cleaning mechanism of claim 1, wherein, The driving member and the rotating member are in transmission connection in a concave-convex cooperation mode, the rotating member and the driven member are in transmission connection in a concave-convex cooperation mode, and the driving member, the rotating member and the driven member are arranged side by side in sequence.

3. A cleaning mechanism as claimed in claim 1 or 2, characterized in that The outer periphery of the rotating member is provided with first guide grooves and second guide grooves extending in a spiral manner and being spaced, the first guide grooves extend in a spiral direction opposite to that of the second guide grooves, the driving member is in transmission cooperation with the first guide grooves, and the driven member is in transmission cooperation with the second guide grooves; or The outer periphery of the rotating member is provided with first guide protrusions and second guide protrusions extending in a spiral manner and being spaced, the first guide protrusions extend in a spiral direction opposite to that of the second guide protrusions, the driving member is in transmission cooperation with the first guide protrusions, and the driven member is in transmission cooperation with the second guide protrusions.

4. The cleaning mechanism of claim 1, wherein, The driving member is configured to slide in a first direction, the driven member is configured to slide in a direction opposite to the first direction, and the rotating member is configured to rotate along a rotating axis, the extending direction of the rotating axis is parallel to the first direction.

5. The cleaning mechanism of claim 4, wherein, The rotating member comprises: a column body configured to rotate, the column body comprising an outer periphery surface surrounding the rotating axis; a first rotating guide part provided on the outer periphery surface and in transmission cooperation with the driving member; a second rotating guide part provided on the outer periphery surface and in transmission cooperation with the driven member; wherein the first rotating guide part and the second rotating guide part are each protruded or recessed relative to the outer periphery surface, and the guide direction of the first rotating guide part is different from that of the second rotating guide part.

6. The cleaning mechanism of claim 5, wherein, The extending track of the first rotating guide part and that of the second rotating guide part are symmetrically arranged about a symmetry plane, and the rotating axis is located on the symmetry plane; or The extending track of the first rotating guide part and that of the second rotating guide part are straight lines or curves at the same time.

7. The cleaning mechanism of claim 1, wherein, The driving member is provided with a first sliding guide part, the rotating member is provided with a first rotating guide part, the first sliding guide part and the first rotating guide part are connected in a concave-convex cooperation mode, the first sliding guide part is protruded and the first rotating guide part is recessed, or the first sliding guide part is recessed and the first rotating guide part is protruded.

8. The cleaning mechanism of claim 1, wherein, The driven part is provided with a second sliding guide part, the rotating part is provided with a second rotating guide part, the second sliding guide part and the second rotating guide part are connected in a concave-convex matching mode; the second sliding guide part is convexly arranged and the second rotating guide part is concavely arranged, or the second sliding guide part is concavely arranged and the second rotating guide part is convexly arranged.

9. The cleaning mechanism of claim 1, wherein, The cleaning mechanism further comprises a support, the driving part and the driven part are respectively in sliding connection with the support, and the rotating part is in rotating connection with the support and is arranged between the driving part and the driven part.

10. The cleaning mechanism of claim 1, wherein, The cleaning mechanism further comprises a reset part, the reset part is connected with the driving part or the driven part and is used for driving the driving part, the rotating part and the driven part to reset.

11. The cleaning mechanism of claim 10, wherein, The cleaning mechanism further comprises a support, the driving part and the driven part are respectively in sliding connection with the support, and the reset part is an elastic part; when the reset part is connected with the driving part, one end of the reset part is connected with the driving part and the other end is connected with the support; when the reset part is connected with the driven part, one end of the reset part is connected with the driven part and the other end is connected with the support.

12. The cleaning mechanism of claim 1, wherein, The cleaning part comprises a pushing part, the pushing part comprises two limiting plates which are convexly arranged and are spaced apart, and a gap between the two limiting plates is configured to pass through the nozzle to clean the nozzle.

13. A stereolithography apparatus, characterized in that It comprises a stereoscopic printing body, a nozzle and the cleaning mechanism as claimed in any one of claims 1 to 2 and 4 to 12, the cleaning mechanism is connected with the stereoscopic printing body and is adjustable in position relative to the nozzle to wipe the nozzle.

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