Portal frame structure and 3D printing equipment applying same

Abstract

The utility model discloses a portal frame structure and 3D printing equipment applying the same. The portal frame structure comprises a frame and a guide rail part; the frame is of an integrally-formed annular structure. The guide rail part and the frame are connected and integrally formed. The 3D printing equipment comprises a base assembly, a driving assembly, a nozzle assembly and a portal frame structure, the base assembly and the driving assembly are both connected with the portal frame structure, and the nozzle assembly is in driving connection with the driving assembly. The portal frame structure is provided with the integrally-formed frame, mounting and placing of the portal frame are facilitated, and the mounting precision of the portal frame structure is ensured; the guide rail part and the frame are integrally formed, the guide rail part can be connected to the frame without other subsequent installation procedures, errors caused by installation are avoided, meanwhile, it is ensured that the relative position between the guide rail part and the frame is accurate, the printing precision is ensured, and the installation difficulty is reduced.

Description

Technical Field

[0001] The present application relates to the field of 3D printing, and in particular to a gantry structure and a 3D printing device using the same. Background Art

[0002] 3D printing is a rapid prototyping technology that uses digital model files as a foundation and utilizes adhesive materials such as special waxes, powdered metals, or plastics to create three-dimensional objects layer by layer. Fused deposition modeling (FDP) is one of the main 3D printing technologies. This technology heats and melts a hot-melt filament, extruding it from a nozzle and depositing it onto a build platform or a previously solidified layer of material, ultimately creating the object.

[0003] Fused deposition modeling (3D) printing technology typically requires a drive assembly to move the nozzle assembly to complete printing. The accuracy of this movement is directly related to printing precision. The gantry is a common support structure in fused deposition modeling (3D) printing equipment, and the guide rails of the drive assembly are often mounted on the gantry. Because the guide rails and gantry must be assembled before use, tolerances introduced during the assembly process can negatively impact printing accuracy. Furthermore, the gantry is typically bulky, making installation inconvenient. Solving these problems is a matter of concern for those skilled in the art. Utility Model Content

[0004] In order to solve the problems in the prior art, embodiments of the present application provide a gantry structure and a 3D printing device using the same.

[0005] An embodiment of the present application provides a gantry structure, which is applied to a 3D printing device. The gantry structure includes:

[0006] a frame, which is an integrally formed annular structure;

[0007] The guide rail portion is connected to the frame and is formed integrally with the frame. A guide structure is formed on the guide rail portion, and the guide structure is located on the outside or inside of the guide rail portion.

[0008] In one embodiment, the frame includes different side edges spaced apart along the first direction, the guide rail portion includes rail members, the different side edges are respectively provided with the rail members, and the guide structure is formed on the rail members.

[0009] In one embodiment, the track members arranged on different sides are all protruded along the first direction toward the inner side of the frame, or the track members arranged on different sides are all protruded along the first direction toward the outer side of the frame.

[0010] In one embodiment, the track member provided on one side is protruded toward the inner side of the frame along the first direction, and the track member provided on the other side is protruded toward the outer side of the frame along the first direction.

[0011] In one embodiment, the track member is disposed along the first direction and passes through the side.

[0012] In one embodiment, the frame includes side edges spaced apart along a first direction, the guide rail portion is disposed on the side edges, and the guide structure is formed by the guide rail portion being recessed and / or protruded along a second direction, and the second direction intersects with the first direction.

[0013] In one embodiment, the guide structures are respectively provided on two outer surfaces of the guide rail portion opposite to each other along the second direction, and the guide structures are recessed toward the inner side of the guide rail portion and / or protruded toward the outer side of the guide rail portion along the second direction.

[0014] In one embodiment, the two inner surfaces of the guide rail portion spaced apart along the second direction are respectively provided with the guide structures, and the guide structures are formed to be recessed toward the outer side of the guide rail portion and / or convex toward the inner side of the guide rail portion along the second direction.

[0015] In one embodiment, the frame includes two side edges spaced apart along a first direction, and the frame also includes a bottom edge and a top edge spaced apart along a third direction, and the top edge, one of the side edges, the bottom edge, and the other side edge are sequentially connected to form the frame; the frame also includes a supporting portion, and the supporting portion is located at the outer junction of the side edge and the bottom edge, and the bottom edge, the side edge, the supporting portion, and the two side edges are integrally formed, and the supporting portion is used to support the frame.

[0016] An embodiment of the present application also provides a 3D printing device, which includes a base assembly, a drive assembly, a nozzle assembly and a gantry structure as described in any one of the aforementioned embodiments, wherein the base assembly and the drive assembly are both connected to the gantry structure, and the nozzle assembly is driven and connected to the drive assembly.

[0017] It can be understood that the gantry structure of the present application has an integrally formed frame, which facilitates the installation and placement of the gantry itself and ensures the installation accuracy of the gantry structure; the guide rail part and the frame are constructed as an integral part, and the guide rail part can be connected to the frame without the need for other installation steps, thereby avoiding errors caused by installation and ensuring the relative position between the guide rail part and the frame is accurate, thereby ensuring printing accuracy and reducing installation difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1A schematic structural diagram of the cooperation between the frame and the guide rail portion of the gantry structure provided in one embodiment of the present application.

[0019] Figure 2 A schematic structural diagram of the cooperation between the frame and the guide rail portion of the gantry structure provided in another embodiment of the present application.

[0020] Figure 3 A schematic structural diagram of the cooperation between the frame and guide rail portion of the gantry structure provided in yet another embodiment of the present application.

[0021] Figure 4 A schematic structural diagram of the cooperation between the frame and guide rail portion of the gantry structure provided in yet another embodiment of the present application.

[0022] Figure 5 A schematic structural diagram of the guide structure of the guide rail portion of the gantry structure provided in one embodiment of the present application.

[0023] Figure 6 A schematic structural diagram of the guide structure of the guide rail portion of the gantry structure provided in another embodiment of the present application.

[0024] Figure 7 A schematic structural diagram of the guide structure of the guide rail portion of the gantry structure provided in yet another embodiment of the present application.

[0025] Figure 8 A schematic structural diagram of the guide structure of the guide rail portion of the gantry structure provided in yet another embodiment of the present application.

[0026] Figure 9 This is a structural schematic diagram of the guide structure of the guide rail portion of the gantry structure provided in another embodiment of the present application.

[0027] Figure 10 This is a structural schematic diagram of the guide structure of the guide rail portion of the gantry structure provided in another embodiment of the present application.

[0028] Figure 11 This is a three-dimensional schematic diagram of the gantry structure provided in an embodiment of the present application from one angle.

[0029] Figure 12 This is a three-dimensional schematic diagram from another angle of the gantry structure provided in an embodiment of the present application.

[0030] Figure 13 for Figure 12 Schematic diagram of a partial cross-section along the XIII-XIII direction.

[0031] Figure 14 for Figure 12 Schematic cross-sectional view along the XIV-XIV direction.

[0032] Figure 15 for Figure 14 A locally enlarged schematic diagram corresponding to the XV region.

[0033] Figure 16 for Figure 14 A locally enlarged schematic diagram corresponding to region XVI.

[0034] Figure 17 A three-dimensional schematic diagram of the 3D printing device provided in an embodiment of the present application.

[0035] Description of main component symbols

[0036] Gantry structure 10

[0037] Framework 11

[0038] Side 111

[0039] Bottom 112

[0040] Top edge 113

[0041] Support portion 114

[0042] Matching cavity 1140

[0043] Third assembly opening 1141

[0044] First surface 115

[0045] Second surface 116

[0046] Second assembly opening 117

[0047] Guide rail portion 12

[0048] Track 121

[0049] Transmission assembly cavity 1210

[0050] Track bar 1211

[0051] First assembly opening 1212

[0052] Guide structure 1213

[0053] Assembly end 1215

[0054] Assembly structure 12150

[0055] Mating end 1216

[0056] Positioning structure 122

[0057] First positioning portion 1221

[0058] Second positioning portion 1222

[0059] Inner surface 128

[0060] Outer surface 129

[0061] First direction X

[0062] Second direction Y

[0063] The third direction Z

[0064] 3D printing equipment 1

[0065] Drive assembly 17

[0066] Base assembly 18

[0067] Nozzle assembly 19

[0068] The following specific implementation methods will further illustrate the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0069] The following description will refer to the accompanying drawings to more fully describe the contents of this application. Shown in the accompanying drawings are exemplary embodiments of the present application. However, the present application can be implemented in many different forms and should not be interpreted as being limited to the exemplary embodiments set forth herein. These exemplary embodiments are provided to make this application thorough and complete and to fully convey the scope of this application to those skilled in the art. Similar figure numerals represent identical or similar components. The terms used herein are only used for the purpose of describing specific exemplary embodiments and are not intended to limit this application. As used herein, unless the context clearly indicates otherwise, the singular forms "one", "an" and "the" are intended to also include plural forms. In addition, when used herein, "includes" and / or "comprising" and / or "having", integers, steps, operations, components and / or components, but do not exclude the presence or addition of one or more other features, regions, integers, steps, operations, components and / or their groups. Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by those of ordinary skill in the art to which this application belongs. Furthermore, unless explicitly defined herein, terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the relevant art and the content of this application, and will not be interpreted as an idealized or overly formal meaning.

[0070] Typically, fused deposition modeling (FDP) 3D printing technology requires a drive assembly to move the nozzle assembly to complete printing. The accuracy of this movement is directly related to printing accuracy. A gantry is a common support structure in FDP 3D printing equipment, and the guide rails of the drive assembly are often mounted on the gantry. Because the guide rails and gantry must be assembled before use, tolerances created during the assembly process can negatively impact printing accuracy. Furthermore, the gantry is typically bulky, making installation inconvenient. Solving these problems is a question for those skilled in the art.

[0071] Correspondingly, a gantry structure and a 3D printing device using the same are provided. The gantry structure includes a frame and a guide rail portion; the frame is an integrally formed annular structure; the guide rail portion is integrally connected to the frame. The 3D printing device includes a base assembly, a drive assembly, a nozzle assembly, and the gantry structure. The base assembly and the drive assembly are both connected to the gantry structure, and the nozzle assembly is drivingly connected to the drive assembly.

[0072] Furthermore, the gantry structure of the present application has an integrally formed frame, which facilitates the installation and placement of the gantry itself and ensures the installation accuracy of the gantry structure; the guide rail part and the frame are constructed as an integral part, and the guide rail part can be connected to the frame without the need for other installation steps, thereby avoiding errors caused by installation and ensuring the relative position between the guide rail part and the frame is accurate, thereby ensuring printing accuracy and reducing installation difficulty.

[0073] Those skilled in the art will understand that "3D printing" refers to a technology that uses a digital model file as the basis and uses adhesive materials such as powdered metal or plastic to construct objects by printing layer by layer.

[0074] The following describes exemplary embodiments with reference to the accompanying drawings. It should be noted that the components depicted in the accompanying drawings are not necessarily shown to scale; and the same or similar components will be given the same or similar reference numerals or similar technical terms.

[0075] The specific implementation methods of the present application are further described in detail below with reference to the accompanying drawings.

[0076] like Figures 1 to 16 As shown, an embodiment of the present application provides a gantry structure 10, which includes a frame 11 and a guide rail portion 12. The frame 11 is an integrally formed annular structure, and the guide rail portion 12 is connected to the frame 11 and is integrally formed. A guide structure 1213 is formed on the guide rail portion 12, and the guide structure 1213 is located on the outside or inside of the guide rail portion 12.

[0077] As can be understood, the gantry structure 10 of the present application has an integrally formed frame 11, which facilitates the installation and placement of the gantry itself and ensures the installation accuracy of the gantry structure 10. The guide rail portion 12 and the frame 11 are integrally formed, eliminating the need to connect the guide rail portion 12 to the frame 11 through assembly, thus avoiding errors caused by installation. At the same time, the relative position between the guide rail portion 12 and the frame 11 is accurate, ensuring printing accuracy and reducing installation difficulty.

[0078] Specifically, the gantry installed in the 3D printing device 1 usually needs to present a support structure in the shape of a ring or frame 11 and needs to be placed upright so that it can cooperate with other components in at least two directions to realize the driving function. However, this structure and the corresponding placement method will cause the gantry to have problems such as unstable center of gravity, easy shaking, and inconvenient installation. The gantry structure 10 of the present application has an integrally formed annular frame 11. The frame 11 has good self-supporting properties and a relatively stable center of gravity position, which is convenient for transportation and placement while also meeting the needs of cooperating with other components. The integrally formed frame 11 enables each side of the annular structure to have a good connection effect, and the annular frame 11 will not fall apart and deform. On the one hand, the frame 11 will not be deformed or misaligned during transportation and installation with other components. On the other hand, the integrally formed frame 11 is also very easy to place, greatly reducing the difficulty of installation and significantly improving accuracy. It should be explained that the "annular structure" does not necessarily mean a regular or irregular circle, but can also be other shapes with end connections.

[0079] At the same time, the guide rails and frame 11 of the gantry structure 10 of the present application are integrally formed, and the relative positions of the guide rails and frame 11 are fixed, which greatly reduces installation tolerances, greatly reduces the difficulty of tolerance design, and greatly improves accuracy. Furthermore, the guide rails and frame 11 of the gantry structure 10 of the present application are integrally formed, and there is no need to consider the installation order and installation method of the frame 11 and the guide rails, which greatly reduces the difficulty of installation and avoids the occurrence of poor printing results or even equipment damage due to installation errors.

[0080] For ease of understanding, the first direction X, the second direction Y, and the third direction Z are introduced for description in the embodiments of the present application. The first direction X, the second direction Y, and the third direction Z are three non-parallel directions in the spatial coordinate system. In subsequent embodiments, the first direction X, the second direction Y, and the third direction Z are taken as examples of three mutually perpendicular reference directions in the three-dimensional Cartesian coordinate system. The directions shown in the embodiments of the present application are used to help understand the relative positional relationship of each component, but do not limit their specific directions.

[0081] Further integration Figures 1 to 10As shown, in one embodiment, the guide rail portion 12 can have multiple connection settings compared to the frame 11 , and the guide structure 1213 can further have multiple settings compared to the guide rail portion 12 .

[0082] Further integration Figures 1 to 4 As shown, in one embodiment, the frame 11 includes different side edges 111 spaced apart along the first direction X. The guide rail portion 12 includes rail members 121 , each of the side edges 111 is provided with a rail member 121 , and a guide structure 1213 is formed on the rail member 121 .

[0083] It can be understood that “different side edges 111 ” refers to different side edges 111 , rather than emphasizing the existence of structural differences between different side edges 111 . The structures of different side edges 111 may be the same or different.

[0084] like Figure 1 As shown, in one embodiment, the track members 121 disposed on different side edges 111 are all protruded along the first direction X toward the inner side of the frame 11 .

[0085] like Figure 2 As shown, in one embodiment, the track members 121 disposed on different side edges 111 are all protruded along the first direction X toward the outer side of the frame 11 .

[0086] like Figure 3 As shown, in one embodiment, the track member 121 provided on one side 111 is protruded along the first direction X toward the inner side of the frame 11 , and the track member 121 provided on the other side 111 is protruded along the first direction X toward the outer side of the frame 11 .

[0087] It can be understood that the track member 121 can be used to cooperate with a driving structure (such as a guide rail, a pulley, etc.), and the track member 121 can be arranged on the inner side or the outer side of the side 111 to achieve its cooperation with the driving structure.

[0088] like Figure 4 As shown, in one embodiment, the track member 121 is disposed along the first direction X and passes through the side edge 111 .

[0089] In this embodiment, the track member 121 may be disposed throughout the side edge 111 , that is, the track member 121 may be disposed on both the inner side and the outer side of the side edge 111 .

[0090] In other embodiments, the guide rail portion 12 may be formed by directly recessing the side edge 111 having a certain thickness along the first direction X.

[0091] Further integration Figures 5 to 10As shown, in one embodiment, the guide rail portion 12 is disposed on the side 111 , and the guide structure 1213 is formed by the guide rail portion 12 being recessed and / or protruding along the second direction Y.

[0092] It is understood that the guide structure 1213 can be used to guide the driving structure, which includes but is not limited to an optical axis, a guide wheel with a raised surface, a guide wheel with a groove, etc. Correspondingly, the guide structure 1213 can be convex or groove-shaped to match different forms of the driving structure.

[0093] Further integration Figure 5 and Figure 6 As shown, in one embodiment, two outer surfaces 129 of the guide rail portion 12 opposite to each other along the second direction Y are respectively provided with guide structures 1213, and the guide structures 1213 are recessed toward the inner side of the guide rail portion 12 and / or protruded toward the outer side of the guide rail portion 12 along the second direction Y.

[0094] like Figure 5 As shown, in this embodiment, the guide structure 1213 located on the outer surface 129 is recessed along the second direction Y toward the inner side of the guide rail portion 12 .

[0095] like Figure 6 As shown, in this embodiment, the guide structure 1213 located on the outer surface 129 is formed to protrude along the second direction Y toward the outer side of the guide rail portion 12 .

[0096] Further integration Figure 7 and Figure 8 As shown, in one embodiment, two inner surfaces 128 of the guide rail portion 12 spaced apart along the second direction Y are respectively provided with guide structures 1213, and the guide structures 1213 are recessed toward the outer side of the guide rail portion 12 and / or convex toward the inner side of the guide rail portion 12 along the second direction Y.

[0097] like Figure 7 As shown, the guide structure 1213 located on the inner surface 128 is recessed along the second direction Y toward the outer side of the guide rail portion 12 .

[0098] like Figure 8 As shown, the guide structure 1213 located on the inner surface 128 is formed to protrude along the second direction Y toward the inner side of the guide rail portion 12 .

[0099] like Figure 9As shown, in one embodiment, a guide structure 1213 is provided on one of the two inner surfaces 128 of the guide rail portion 12 spaced apart along the second direction Y, and the corresponding guide structure 1213 is recessed toward the outer side of the guide rail portion 12 along the second direction Y; and a guide structure 1213 is provided on one of the two outer surfaces 129 of the guide rail portion 12 opposite to each other along the second direction Y, and the corresponding guide structure 1213 is protruded toward the outer side of the guide rail portion 12 along the second direction Y.

[0100] like Figure 10 As shown, in one embodiment, a guide structure 1213 is provided on one of the two inner surfaces 128 of the guide rail portion 12 spaced apart along the second direction Y, and the corresponding guide structure 1213 is formed by protruding toward the inner side of the guide rail portion 12 along the second direction Y; and a guide structure 1213 is provided on one of the two outer surfaces 129 of the guide rail portion 12 opposite to each other along the second direction Y, and the corresponding guide structure 1213 is formed by being recessed toward the inner side of the guide rail portion 12 along the second direction Y.

[0101] Further integration Figures 11 to 16 As shown, in this embodiment, one form of the above embodiment is taken as an example for further demonstration. Specifically: the frame 11 includes two side edges 111, the guide rail portion 12 includes two track members 121, the two track members 121 are respectively arranged on one side edge 111, and the two outer surfaces 129 of the track member 121 are provided with a guide structure 1213, and the guide structure 1213 is a groove structure that is recessed toward the inner side of the track member 121.

[0102] In one embodiment, the frame 11 includes a support portion 114, a bottom side 112, a top side 113, and two side sides 111. The bottom side 112, one side side 111, the top side 113, and the other side side 111 are sequentially connected end to end to form an annular structure. That is, the bottom side 112 and the top side 113 are located between the two side sides 111 along the first direction X and are respectively connected to the two side sides 111. The guide rail portion 12 is disposed on the inner side of the annular structure and is connected to the bottom side 112 and the two side sides 111. The support portion 114 is disposed on the outer side of the annular structure and is connected to the bottom side 112 and the two side sides 111.

[0103] In this embodiment, the two side edges 111 are spaced apart along the first direction X, and the bottom edge 112 and the top edge 113 are spaced apart along the third direction Z. The two side edges 111 are arranged in a strip-like shape along the third direction Z, and the bottom edge 112 and the top edge 113 are arranged in a strip-like shape along the first direction X. The width direction of the bottom edge 112, the top edge 113, and the two side edges 111 corresponds to the second direction Y. The projections of the bottom edge 112, the top edge 113, and the two side edges 111 in the second direction Y are rectangular with rounded chamfers (i.e., the annular structure). It will be understood that the annular structure does not refer to a quasi-circular or quasi-elliptical shape, but rather refers to a structure having a continuous and complete boundary and being hollow.

[0104] In one embodiment, the bottom edge 112, the side edges 111, the support portion 114 and the two side edges 111 are integrally formed. The support portion 114 is located outside the side edges 111 and the bottom edge 112 and is located at the junction of the bottom edge 112 and the side edges 111. The support portion 114 is used to support the frame 11.

[0105] In this embodiment, the annular structure formed by sequentially connecting the bottom edge 112, one side edge 111, the top edge 113, and the other side edge 111 has rounded chamfers, which can enhance the safety and aesthetics of the frame 11. Furthermore, the number of support portions 114 can be two, with the two support portions 114 located on either side of the frame 11. The frame 11 is generally a triangular structure with long arc sides. The right angles of the support portions 114 are used to contact the bearing surface. The support portions 114 also have a certain width, which can enhance the stability of the gantry structure 10.

[0106] In one embodiment, the frame 11 includes a first surface 115 and a second surface 116 disposed opposite each other. The first surface 115 is located inside the guide rail portion 12, and the second surface 116 is located outside the guide rail portion 12. The guide rail portion 12 is disposed on the first surface 115 and is raised relative to the first surface 115 toward a side away from the second surface 116.

[0107] As will be understood, the first surface 115 is the inner surface 128 of the annular structure of the frame 11, and the second surface 116 is the outer surface 129 of the annular structure of the frame 11. The guide rail portion 12 is located on the inner surface 128 of the frame 11 and is integrally formed with the frame 11. The guide rail portion 12 can be connected to the first surface 115 and integrally formed. To achieve its guiding function, the guide rail portion 12 must have a certain thickness, and a thickness difference is used to form a guiding structure. Therefore, the guide rail portion 12 needs to be provided with a protrusion to give it a certain thickness.

[0108] In one embodiment, the guide rail portion 12 includes a rail member 121 and a positioning structure 122 , wherein the positioning structure 122 is connected to the rail member 121 and formed integrally. The rail member 121 is disposed on the side 111 , and the positioning structure 122 is disposed on the bottom 112 .

[0109] In this embodiment, track member 121 includes an integrally formed track bar 1211, an assembly end 1215, and a mating end 1216. The two sides of track bar 1211 are connected to assembly end 1215 and mating end 1216, respectively. Assembly end 1215 is located on the side of track member 121 near top edge 113, and mating end 1216 is located on the side of track member 121 near bottom edge 112. Track bar 1211 is located between assembly end 1215 and mating end 1216. Positioning structure 122 extends along first direction X and is disposed along bottom edge 112. Two track members 121 are located between positioning structure 122 along first direction X and are respectively connected to positioning structure 122.

[0110] In one embodiment, the guide rail portion 12 includes two rail members 121 . The two rail members 121 are respectively disposed on the two side edges 111 . The guide rail portion 12 is protruded toward the inner side of the frame 11 along the first direction X.

[0111] It can be understood that the two track members 121 are arranged to be raised compared to the frame 11, so that the present application has a certain thickness, and at the same time, a structure for guidance can be constructed through the thickness difference.

[0112] In one embodiment, a transmission assembly cavity 1210 is defined in the guide rail portion 12 having a certain thickness along the first direction X. The transmission assembly cavity 1210 communicates with the second assembly opening 117. The frame 11 defines a second assembly opening 117 that passes through the first surface 115 and the second surface 116.

[0113] As will be appreciated, the transmission assembly cavity 1210 is used to accommodate a transmission shaft (not shown), and the transmission assembly cavity 1210 extends along the third direction Z. The second assembly opening 117 is provided to expose the assembly structure 12150 of the assembly end 1215, thereby facilitating the installation of the transmission shaft and the assembly end 1215. Furthermore, the second assembly opening 117 exposes the interior of the transmission assembly cavity 1210, allowing observation of the interior of the transmission assembly cavity 1210 and the transmission shaft disposed therein, or for performing other operations.

[0114] In one embodiment, the two track members 121 are each provided with a first assembly opening 1212 along the first direction X, and the transmission assembly cavity 1210 is communicated with the first assembly opening 1212 .

[0115] In this embodiment, the second assembly opening 117 and the first assembly opening 1212 are respectively located on opposite sides of the transmission assembly cavity 1210 along the first direction X. The first assembly opening 1212 is used to expose the transmission shaft provided in the transmission assembly cavity 1210, so as to facilitate the connection between the transmission shaft and the drive component 17 of the 3D printing device 1.

[0116] In one embodiment, the track member 121 includes two track bars 1211 spaced apart along the second direction Y. The transmission assembly cavity 1210 is located between the two track bars 1211 . The first assembly opening 1212 is provided between the two track bars 1211 .

[0117] In one embodiment, each track bar 1211 is provided with a guide structure 1213 that is recessed along the second direction Y toward the side where the transmission assembly cavity 1210 is located. The guide structure 1213 is spaced apart from the transmission assembly cavity 1210 .

[0118] It can be understood that the guide structure 1213 is used to accommodate a guide shaft (not shown), and the guide structure 1213 and the transmission assembly cavity 1210 extend in the same direction. Further, the guide structure 1213 extends along the third direction Z.

[0119] In one embodiment, the support portion 114 defines a mating cavity 1140 corresponding to the transmission assembly cavity 1210, and a third assembly opening 1141 connecting the transmission assembly cavity 1210 and the mating cavity 1140. The transmission assembly cavity 1210, the third assembly opening 1141, and the mating cavity 1140 cooperate to accommodate a transmission shaft. During assembly, the transmission shaft can pass through the mating cavity 1140, through the third assembly opening 1141, and further extend into the transmission assembly cavity 1210.

[0120] In one embodiment, the mating end 1216 is configured to connect to the positioning structure 122, and the track member 121 and the positioning structure 122 have a smooth connection structure. The positioning structure 122 is configured to protrude toward the interior of the frame 11 along the third direction Z. The protruding positioning structure 122 can be used to connect and coordinate the gantry structure 10 with the 3D printing device 1.

[0121] In this embodiment, the positioning structure 122 includes a first positioning portion 1221 for connecting to the drive structure (not shown) of the drive base assembly 18, and a second positioning portion 1222 for connecting to the drive motor (not shown). Both the first positioning portion 1221 and the second positioning portion 1222 can be manufactured through an integrated molding process, resulting in high assembly accuracy. The first positioning portion 1221 can be used to connect to and position the drive structure of the drive base, while the second positioning portion 1222 can be used to connect to and position the drive motor. In other words, the gantry structure 10 can serve as a reference for the installation and positioning of the 3D printing device 1.

[0122] It is understood that the gantry structure 10 of the present application has a frame 11 with supporting and connecting functions, a guide rail portion 12 with guiding functions, and a guide rail portion 12 and the frame 11 are also integrally formed. This eliminates the need for further assembly during the subsequent assembly process, significantly improving assembly accuracy, thereby improving 3D printing accuracy and reducing installation difficulty.

[0123] Further integration Figure 17 As shown, an embodiment of the present application further provides a 3D printing device 1, which includes a base assembly 18, a drive assembly 17, a nozzle assembly 19 and a gantry structure 10 as any one of the aforementioned embodiments, the base assembly 18 and the drive assembly 17 are both connected to the gantry assembly, and the nozzle assembly 19 is driven and connected to the drive assembly 17.

[0124] It can be understood that the gantry structure 10 can be used to cooperate with the drive assembly 17 to drive the nozzle assembly 19 to move along the first direction X and the third direction Z, and the base assembly 18 can move along the second direction Y compared to the gantry structure 10, thereby realizing the movement between the nozzle assembly 19 and the base assembly 18 along the first direction X, the second direction Y and the third direction Z.

[0125] The specific embodiments of the present application have been described above with reference to the accompanying drawings. However, those skilled in the art will appreciate that various modifications and substitutions may be made to the specific embodiments of the present application without departing from the spirit and scope of the present application. Such modifications and substitutions are intended to fall within the scope of the present application.

Claims

1. A gantry structure, characterized in that: The gantry structure is applied to 3D printing equipment, and the gantry structure includes: a frame, which is an integrally formed annular structure; The guide rail portion is connected to the frame and is formed integrally with the frame. A guide structure is formed on the guide rail portion, and the guide structure is located on the outside or inside of the guide rail portion.

2. The gantry structure according to claim 1, characterized in that: The frame includes different side edges spaced apart along a first direction, the guide rail portion includes track pieces, different side edges are provided with the track pieces respectively, and the guide structure is formed on the track pieces.

3. The gantry structure according to claim 2, characterized in that: The track members arranged on different sides are all protruded along the first direction toward the inner side of the frame, or the track members arranged on different sides are all protruded along the first direction toward the outer side of the frame.

4. The gantry structure according to claim 2, characterized in that: The track member provided on one of the side edges is protruded toward the inner side of the frame along the first direction, and the track member provided on the other side edge is protruded toward the outer side of the frame along the first direction.

5. The gantry structure according to claim 2, characterized in that: The track member is arranged along the first direction and passes through the side edge.

6. The gantry structure according to claim 1, wherein: The frame includes side edges spaced apart along a first direction, the guide rail portions are provided on the side edges, and the guide structure is formed by the guide rail portions being recessed and / or protruded along a second direction, where the second direction intersects the first direction.

7. The gantry structure according to claim 6, characterized in that: The guide structures are respectively provided on two outer surfaces of the guide rail portion that are opposite to each other along the second direction. The guide structures are recessed toward the inner side of the guide rail portion and / or protruded toward the outer side of the guide rail portion along the second direction.

8. The gantry structure according to claim 6, characterized in that: The guide structures are respectively provided on two inner surfaces of the guide rail portion spaced apart along the second direction. The guide structures are recessed toward the outer side of the guide rail portion and / or protruded toward the inner side of the guide rail portion along the second direction.

9. The gantry structure according to claim 1, wherein: The frame includes two side edges spaced apart along a first direction, and the frame also includes a bottom edge and a top edge spaced apart along a third direction, and the top edge, one of the side edges, the bottom edge and the other side edge are sequentially connected to form the frame; the frame also includes a supporting portion, and the supporting portion is located at the outer junction of the side edges and the bottom edge, and the bottom edge, the side edges, the supporting portion and the two side edges are integrally formed, and the supporting portion is used to support the frame.

10. A 3D printing device, characterized in that: It comprises a base assembly, a drive assembly, a nozzle assembly and a gantry structure as described in any one of claims 1 to 9, wherein the base assembly and the drive assembly are both connected to the gantry structure, and the nozzle assembly is driven and connected to the drive assembly.

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