Transmission connection structure and 3D printer

Abstract

The utility model provides a transmission connecting structure, and belongs to the technical field of 3D printers, the transmission connecting structure comprises a first threaded connecting piece and an elastic compensation seat, the elastic compensation seat has elasticity, and the first threaded connecting piece and an external structural part can be in non-rigid connection, so that when a transmission piece is bent and / or the external structural part has assembly deviation, the first threaded connecting piece is not in rigid connection with the external structural part; the first threaded connecting piece can still move along with the transmission piece, the transmission piece aligns the first threaded connecting piece through elastic deformation of the elastic compensation base, the assembling gap between the first threaded connecting piece and the transmission piece is eliminated, and it is guaranteed that the transmission piece and the first threaded connecting piece can be tightly matched; and therefore, the first threaded connecting piece can rotate smoothly in the transmission process with the transmission piece, the stress of the first threaded connecting piece is more balanced, and the movement flexibility and smoothness of the external structural piece are improved.

Description

Technical Field

[0001] The present application belongs to the technical field of 3D printers, and specifically relates to a transmission connection structure and a 3D printer. Background Art

[0002] In the fused deposition modeling 3D technology, brass nuts are mostly used as transmission connection structures in conjunction with T-type lead screws to realize the lifting function of the X-axis module. However, when the lead screw is deformed or there is a deviation in the assembly of the transmission connection structure and the external structural parts, the transmission connection structure and the T-type lead screw will not rotate smoothly, which will lead to uneven force. As a result, the 3D printer will be stuck and have severe vibrations during the printing process due to the uneven rotation of the lead screw, affecting the printing quality. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art or related technology.

[0004] To this end, a first aspect of the utility model provides a transmission connection structure.

[0005] A second aspect of the utility model provides a 3D printer.

[0006] In view of this, according to an embodiment of the present application, a transmission connection structure is proposed, including:

[0007] An elastic compensation seat, used for connecting with an external structural member;

[0008] A first threaded connector, the elastic compensation seat is connected to the transmission member via the first threaded connector;

[0009] The first threaded connection member eliminates transmission imbalance between the first threaded connection member and the transmission member through elastic deformation of the elastic compensation seat.

[0010] In a feasible implementation manner, the transmission connection structure further includes:

[0011] The first fastener is used to install the first threaded connector on one end of the elastic compensation seat away from the external structural member.

[0012] In a feasible implementation, the elastic compensation seat includes a first end surface, and the first end surface has a preset angle with the horizontal plane;

[0013] The first end surface is a mounting surface for the external structural component and the elastic compensation seat.

[0014] In a feasible implementation manner, the first threaded connector and the elastic compensation seat are integrally formed, and a preset angle is between 0 degrees and 5 degrees.

[0015] In a feasible implementation manner, the transmission connection structure further includes:

[0016] A fixed seat, the fixed seat is movably connected with the elastic compensation seat;

[0017] The fixing seat includes a second threaded connection member, and the fixing seat is connected to the transmission member through the second threaded connection member;

[0018] The elastic member is arranged between the fixing seat and the elastic compensation seat.

[0019] In a feasible implementation manner, the fixing seat further includes:

[0020] A first main body, wherein the second threaded connector is connected to the first main body;

[0021] The clamping part is connected to the first main body, extends in a direction close to the elastic compensation seat, and is clamped with the elastic compensation seat.

[0022] In a feasible implementation manner, a receiving groove is provided on the top of the first body, the receiving groove is recessed in a direction away from the elastic compensation seat, and the second threaded connector is located in the receiving groove;

[0023] The elastic member is sleeved on the outer side of the second threaded connection member to limit the position of the elastic member.

[0024] In a feasible implementation manner, the elastic compensation seat includes:

[0025] A second body, wherein a first deformation cavity is arranged inside the second body;

[0026] A third body, wherein a second deformation cavity is arranged inside the third body, the third body is connected to the first threaded connector, and there is a distance between the third body and the second body;

[0027] The combining part connects the second body and the third body to form a third deformation cavity between the second body and the third body.

[0028] In a feasible implementation manner, the second body includes:

[0029] A first connecting portion, the first connecting portion is used to connect with an external structural member;

[0030] The first deformation part is connected with the combining part, the first deformation part is connected with the first connecting part, and a first deformation cavity is formed between the first deformation part and the first connecting part.

[0031] In a feasible implementation manner, the third entity includes:

[0032] A second connection portion, the second connection portion is used to connect with the first threaded connection piece;

[0033] The second deformation part is connected to the combining part, the second deformation part is connected to the second connecting part, and the second deformation part is arranged around the outside of the second connecting part to form a fourth deformation cavity between the second deformation part and the second connecting part.

[0034] According to a second aspect of an embodiment of the present application, a 3D printer is proposed, comprising: a transmission connection structure as described in any of the above technical solutions, wherein the transmission member is a screw rod, and the external structural member is an X-axis guide wheel assembly.

[0035] Compared with the prior art, the transmission connection structure and 3D printer of the present application have the following beneficial effects:

[0036] The transmission connection structure provided in the embodiment of the present application includes a first threaded connection member and an elastic compensation seat. The first threaded connection member is sleeved on the outside of the transmission member and is threadedly connected to the transmission member. The elastic compensation seat is connected to the first threaded connection member, and the elastic compensation seat is connected to the external structural member, so that the external structural member and the transmission member are transmission-connected through the elastic compensation seat, and then the external structural member is driven to perform lifting and lowering movements on the transmission member through the rotation of the transmission member; the elastic compensation seat is elastic, and can make the connection between the first threaded connection member and the external structural member a non-rigid connection. Therefore, when the transmission member bends and / or there is a deviation in the assembly of the transmission connection structure and the external structural member, the first threaded connection member can still move with the transmission member, and the transmission member guides the first threaded connection member through the elastic deformation of the elastic compensation seat, eliminates the transmission imbalance between the first threaded connection member and the transmission member, and ensures that the transmission member and the first threaded connection member can be closely matched, so that the first threaded connection member can rotate smoothly during the transmission process with the transmission member, and the force on the first threaded connection member remains balanced, thereby improving the flexibility and smoothness of the movement of the external structural member. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0038] Figure 1 A first schematic structural diagram of a transmission connection structure and a transmission member in transmission connection with an embodiment provided in the present application;

[0039] Figure 2 A first schematic structural diagram of a transmission connection structure of an embodiment provided in the present application;

[0040] Figure 3 A first angle schematic diagram of a first schematic structural diagram of an elastic compensation seat in a transmission connection structure of an embodiment provided in the present application;

[0041] Figure 4 This is a schematic diagram of the deformation of the elastic compensation seat after being subjected to force in a transmission connection structure of an embodiment provided by the present application;

[0042] Figure 5 A schematic diagram of the installation position of a transmission connection structure of an embodiment provided in the present application on a printer;

[0043] Figure 6 A first angle schematic diagram of a second schematic structural diagram of a transmission connection structure and a transmission member in transmission connection with an embodiment provided in the present application;

[0044] Figure 7 A second angle schematic diagram of a second schematic structural diagram of a transmission connection structure and a transmission member in transmission connection with an embodiment provided in the present application;

[0045] Figure 8 A first angle schematic diagram of a second schematic structural diagram of a transmission connection structure of an embodiment provided in the present application;

[0046] Fig. 9 A third schematic structural diagram of a transmission connection structure and a transmission member in transmission connection with an embodiment provided in the present application;

[0047] Fig.10 A first angle schematic diagram of a third schematic structural diagram of a transmission connection structure of an embodiment provided in the present application;

[0048] Fig.11 A second angle schematic diagram of a first schematic structural diagram of an elastic compensation seat in a transmission connection structure of an embodiment provided in the present application;

[0049] Fig.12 A second angle schematic diagram of a second schematic structural diagram of a transmission connection structure of an embodiment provided in the present application;

[0050] Fig.13 A second angle schematic diagram of a third schematic structural diagram of a transmission connection structure of an embodiment provided in the present application;

[0051] in, Figures 1 to 13 The corresponding relationship between the reference numerals and component names in the figure is:

[0052] 10. Transmission member; 11. External structural member; 12. First threaded connector; 13. Support frame; 14. Coupling; 15. Motor; 16. X-axis assembly; 17. Print head module;

[0053] 111. a first guide wheel assembly; 112. a second guide wheel assembly;

[0054] 20. Elastic compensation seat; 21. First fastener; 23. Fixed seat; 24. Elastic member;

[0055] 201, second body; 202, third body; 203, joint;

[0056] 2011, first connecting portion; 2012, first deformation portion;

[0057] 2021, second connecting portion; 2022, second deformation portion;

[0058] 231, second threaded connector; 232, first main body; 233, clamping portion; 234, receiving groove;

[0059] 30. First deformation chamber; 31. Second deformation chamber; 32. Third deformation chamber; 33. Fourth deformation chamber. DETAILED DESCRIPTION

[0060] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0061] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0062] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0063] The preferred embodiments of the present application are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present application and are not used to limit the present application.

[0064] like Figures 1 to 4 As shown, according to an embodiment of the present application, a transmission connection structure is proposed, including: an elastic compensation seat 20 and a first threaded connection member 12, the elastic compensation seat 20 is used to connect with the external structural member 11; the elastic compensation seat 20 is connected to the transmission member 10 through the first threaded connection member 12; the first threaded connection member 12 eliminates the transmission imbalance between the transmission member 10 and the transmission member 10 through the elastic deformation of the elastic compensation seat 20.

[0065] The transmission connection structure provided in the embodiment of the present application includes a first threaded connection member 12 and an elastic compensation seat 20. The first threaded connection member 12 is sleeved on the outer side of the transmission member 10 and is threadedly connected to the transmission member 10. The elastic compensation seat 20 is connected to the first threaded connection member 12, and the elastic compensation seat 20 is connected to the external structural member 11, so that the external structural member 11 is transmission-connected to the transmission member 10 through the elastic compensation seat 20, and then the external structural member 11 is driven to perform a lifting movement on the transmission member 10 through the rotation of the transmission member 10; the elastic compensation seat 20 is elastic, which can make the connection between the first threaded connection member 12 and the external structural member 11 a non-rigid connection, so when the transmission member 10 is bent and / or the transmission connection structure is connected to the external structure When there is a deviation in the assembly of the component 11, the first threaded connection 12 can still move with the transmission member 10, ensuring that the transmission member 10 can guide the first threaded connection 12 through the elastic deformation of the elastic compensation seat 20, so that the first threaded connection 12 fits with the transmission member 10, and eliminates the unbalanced force (i.e., transmission imbalance) between the first threaded connection 12 and the transmission member 10 caused by the deformation of the transmission member 10 or the uneven transmission when there is a deviation in the assembly with the external structural member 11, ensuring that the transmission member 10 and the first threaded connection 12 can be closely matched, so that the first threaded connection 12 can rotate smoothly during the transmission process with the transmission member 10, and the first threaded connection 12 is balanced in force, thereby improving the flexibility and fluency of the movement of the external structural member 11. It can be understood that when the transmission member 10 itself is bent and / or there is an assembly deviation of the external structural member 11, a relative force will be generated between the first threaded connection member 12 and the external structural member 11. The force of the external structural member 11 on the transmission member 10 directly acts on the elastic compensation seat 20, causing the elastic compensation seat 20 to undergo elastic deformation. At the same time, the force of the transmission member 10 on the external structural member 11 is transmitted to the elastic compensation seat 20 through the first threaded connection member 12, which also causes the elastic compensation seat 20 to undergo elastic deformation. Subsequently, the elastic compensation member bears the interaction force between the transmission member 10 and the external structural member 11, so that the first threaded connection member 12, which is transmission-connected to the transmission member 10, can fit tightly with the transmission member 10, thereby reducing the assembly requirements of the transmission member 10 and the external structural member 11.

[0066] As a preferred solution, the elastic compensation seat 20 is made of POM material, which has elasticity and lubricity, and can adapt well to the micro-deformation of the transmission part 10, so that the first threaded connection part 12 moves smoothly and ensures the fluency and accuracy of the lifting and lowering action of the X-axis assembly 16.

[0067] like Figure 5 As shown, further, the external structural member 11 is the X-axis guide wheel assembly in the printer, the transmission member 10 is a screw rod vertically arranged on the printer, the first threaded connection member 12 is sleeved on the outside of the screw rod and is transmission-connected to the screw rod, and the elastic compensation seat 20 connects the X-axis guide wheel to the screw rod, thereby eliminating the transmission imbalance between the screw rod and the first threaded connection member 12 through the elastic deformation of the elastic compensation seat 20 itself, so that the X-axis guide wheel assembly can move smoothly.

[0068] In some examples, two lead screws are vertically arranged and rotatably connected to the printer support frame 13, and one end of the lead screw is connected to the output shaft of the motor 15 through the coupling 14, so as to drive the lead screw to rotate through the motor 15; the X-axis guide wheel assembly includes a first guide wheel assembly 111 and a second guide wheel assembly 112, the first end of the X-axis assembly 16 is connected to the first guide wheel assembly 111, and the second end of the X-axis assembly 16 is connected to the second guide wheel assembly 112, the first guide wheel assembly 111 and the second guide wheel assembly 112 are respectively connected to the first threaded connectors 12 on the two lead screws through the elastic compensation seat 20, so that the first guide wheel assembly 111 and the second guide wheel assembly 112 are respectively connected to the lead screws on both sides of the support frame 13, and the first guide wheel assembly 111 and the second guide wheel assembly 112 are driven by the rotation of the lead screw to move up and down, thereby driving the X-axis assembly 16 to perform lifting and lowering movements, thereby adjusting the height of the print head module 17 on the X-axis assembly 16, so that the print head assembly can accurately reach the specified position for 3D printing.

[0069] Furthermore, two guide rails are vertically arranged on the support frame 13, and the two guide rails pass through the first guide wheel assembly 111 and the second guide wheel assembly 112 respectively, so as to limit and guide the X-axis guide wheel assembly through the guide rails, so that the X-axis guide wheel assembly can move smoothly in the vertical direction, and at the same time can reduce the tendency of the lead screw to deform, so that the first threaded connector 12 and the lead screw can be transmitted stably, thereby improving the printing accuracy.

[0070] like Figures 1 to 4 As shown, in a feasible embodiment, the transmission connection structure also includes: a first fastener 21, and the first threaded connection 12 is installed on the end of the elastic compensation seat 20 away from the external structural member 11 through the first fastener 21, and the elastic compensation seat 20 compensates for the assembly gap between the first threaded connection 12 and the transmission member 10 through its own elastic deformation.

[0071] In this technical solution, the first threaded connector 12 and the external structural member 11 are respectively located at the two ends of the elastic compensation seat 20, so that the elastic compensation seat 20 has a larger deformable space and a better deformation ability, thereby ensuring that the elastic compensation seat 20 is sufficient to offset the multi-directional forces between the first threaded connector 12 and the transmission member 10 by relying solely on its own elastic deformation, thereby preventing transmission imbalance between the first threaded connector 12 and the transmission member 10, and allowing the transmission member 10 to rotate smoothly without losing steps during the transmission process with the first threaded connector 12, thereby ensuring the accuracy of the printed model, while eliminating the layer patterns, multiple layers, and missing layer problems of the model, and improving the printing quality of the printer.

[0072] like Figure 4 As shown, in some examples, when the transmission member 10 is bent and / or there is an assembly deviation of the fixed components of the external structural member 11, the assembly gap between the first threaded connector 12 and the transmission member 10 mainly exists in the form of a radial gap, that is, there is an assembly gap in the horizontal direction between the transmission member 10 and the first threaded connector 12. At this time, the external structural member 11 and the first threaded connector 12 respectively apply force to the elastic compensation seat 20 from two opposite directions on the horizontal plane. The elastic compensation seat 20 can be tilted and deformed in any direction of 360 degrees horizontally due to the horizontal tension or pressure, thereby compensating for the radial gap between the transmission member 10 and the first threaded connector 12, so that the transmission connection structure fits the transmission member 10 as a whole, and the first threaded connector 12 can move smoothly on the transmission member 10.

[0073] It should be noted that when the transmission member 10 is bent and / or there is a deviation in the assembly of the fixed components of the external structural member 11, a small axial assembly gap will also be generated between the transmission member 10 and the first threaded connector 12, that is, there is an assembly gap in the vertical direction between the first threaded connector 12 and the transmission member 10. At this time, the external structural member 11 and the first threaded connector 12 respectively apply force to the elastic compensation seat 20 from two opposite directions in the vertical direction, so that the elastic compensation seat 20 is deformed in the vertical direction due to the longitudinal tension or pressure, thereby compensating for the axial gap between the transmission member 10 and the first threaded connector 12. It can be understood that when the transmission member 10 is bent and / or there is a deviation in the assembly of the fixed components of the external structural member 11, the elastic compensation seat 20 is deformed in the horizontal and vertical directions at the same time to compensate for the gaps in different directions between the first threaded connector 12 and the transmission member 10, thereby eliminating transmission imbalance.

[0074] like Figures 6 to 8 As shown, in a feasible implementation manner, the elastic compensation seat 20 includes a first end surface, and the first end surface has a preset angle with the horizontal plane; wherein the first end surface is the mounting surface of the external structural member 11 and the elastic compensation seat 20 .

[0075] In this technical solution, since there is an angle between the mounting surface of the elastic compensation seat 20 and the external structural member 11 and the horizontal plane, when the elastic compensation seat 20 is connected to the external structural member 11, the first end face is in contact with the outer wall structural member, so that the elastic compensation seat 20 and the first threaded connection member 12 are in an inclined state relative to the transmission member 10; when the transmission member 10 passes through the first threaded connection member 12, the transmission member 10 will guide the first threaded connection member 12 from the inclined state, and at the same time, the first threaded connection member 12 drives the end of the elastic compensation seat 20 connected to the first threaded connection member 12 to be relative to the external structure. The first threaded connector 11 swings to offset the force of the external structural member 11 on the first threaded connector 12, so that the first threaded connector 12 and the transmission member 10 can be transmitted smoothly; when the transmission member 10 is bent and / or there is a deviation in the assembly of the fixing components of the external structural member 11, since the elastic compensation seat 20 is elastic and is set at an angle to the transmission member 10 as a whole, the first threaded connector 12 has a larger swing space when moving with the transmission member 10, ensuring that the first threaded connector 12 can return to the original position, thereby compensating for the gap between the transmission member 10 and the first threaded connector 12 and eliminating transmission imbalance.

[0076] like Figure 8 As shown, in a feasible implementation manner, the first threaded connector 12 and the elastic compensation seat 20 are integrally formed, and the preset angle is 0 to 5 degrees.

[0077] In this technical solution, the preset angle between the first end face and the horizontal plane is 0 degrees to 5 degrees, such as 1 degree, 3 degrees, or 5 degrees, to prevent the first threaded connector 12 and the elastic compensation seat 20 from being too tilted before being connected to the transmission member 10, and to reduce the deformation degree of the elastic compensation seat 20 when the transmission member 10 guides the first threaded connector 12, thereby ensuring that when the transmission member 10 is bent and / or there is a deviation in the assembly of the fixing components of the external structural member 11, the elastic compensation seat 20 still has sufficient deformation space to eliminate the gap between the transmission member 10 and the first threaded connector 12, and prevent the first threaded connector 12 from getting stuck during the transmission process with the transmission member 10, thereby ensuring the smoothness and stability of the movement of the external structural member 11, thereby ensuring the transmission stability and transmission accuracy of the external structural member 11 between the transmission member 10 and the first threaded connector 12.

[0078] As a preferred solution, the external structural member 11 includes two groups of guide wheel assemblies, the guide wheel assemblies include a concentric guide wheel assembly, an eccentric guide wheel assembly and a connecting plate, and the elastic compensation seat 20 is installed on the connecting plate by a second fastener 22, so that the elastic compensation seat 20 swings under the guidance of the transmission member 10, so that the elastic compensation seat 20 can swing relative to the connecting plate, thereby compensating for the gap between the first threaded connector 12 and the transmission member 10.

[0079] like Fig. 9 and Fig.10As shown, in a feasible embodiment, the transmission connection structure also includes: a fixed seat 23 and an elastic member 24; the fixed seat 23 is movably connected to the elastic compensation seat 20; the fixed seat 23 includes a second threaded connection member 231, and the fixed seat 23 is connected to the transmission member 10 via the second threaded connection member 231; the elastic member 24 is arranged between the fixed seat 23 and the elastic compensation seat 20.

[0080] In this technical solution, the second threaded connector 231 is sleeved on the outside of the transmission member 10 and is threadedly connected to the transmission member 10. By connecting the fixed seat 23 to the second threaded connector 231, and connecting the fixed seat 23 to the elastic compensation seat 20 through the elastic member 24, when the transmission member 10 is deformed, through the elastic deformation of the elastic compensation seat 20 itself and the elastic deformation of the elastic member 24, the fixed seat 23 and the elastic compensation seat 20 can automatically produce relative displacement along with the deformation and bending of the transmission member 10, eliminating the gap between the first threaded connector 12 and the transmission member 10 and the gap between the second threaded connector 231 and the transmission member 10, thereby preventing the transmission member 10 from being interfered with during rotation, so that the rotation of the entire transmission member 10 can be kept smooth, thereby ensuring the accuracy of the printed model.

[0081] like Figure 4 As shown, in some examples, when the transmission member 10 is bent and / or there is a deviation in the assembly of the fixed components of the external structural member 11, resulting in an assembly gap in the horizontal direction between the transmission member 10 and the first threaded connector 12, that is, when there is a radial assembly gap between the first threaded connector 12 and the transmission member 10, the external structural member 11 and the first threaded connector 12 respectively apply force to the elastic compensation seat 20 from two opposite directions on the horizontal plane, so that the elastic compensation seat 20 is deformed due to the horizontal tension or pressure, and can be tilted and deformed in any direction of 360 degrees horizontally, thereby compensating for the radial gap between the transmission member 10 and the first threaded connector 12. When the transmission member 10 is bent and / or there is a deviation in the assembly of the fixed components of the external structural member 11, resulting in an assembly gap in the vertical direction between the transmission member 10 and the first threaded connector 12, that is, when there is an axial assembly gap between the first threaded connector 12 and the transmission member 10, the elastic member 24 is elastically deformed to generate a thrust or a pull between the elastic compensation seat 20 and the fixed seat 23 to compensate for the axial assembly gap when the first threaded connector 12 and the transmission member 10 are in transmission. It can be understood that when the transmission member 10 is bent and / or there is a deviation in the assembly of the fixed components of the external structural member 11, the elastic compensation seat 20 and the elastic member 24 are deformed at the same time to compensate for the assembly gaps in different directions between the first threaded connector 12 and the transmission member 10.

[0082] As a preferred solution, the fixing seat 23 is made of POM material, which has elasticity and lubricity, and can well adapt to the micro-deformation of the transmission member 10, so that the second threaded connection member 231 moves smoothly and improves the fluency of the fixing seat 23 moving on the transmission member 10.

[0083] In some examples, the elastic member 24 is a compression spring. When the elastic compensation seat 20 and the fixed seat 23 are assembled, the elastic member 24 is pressurized and can continuously provide thrust to the elastic compensation seat 20 and the fixed seat 23, thereby further eliminating the axial gap between the transmission member 10 and the first threaded connector 12, so that the first threaded connector 12 and the second threaded connector 231 and the transmission member 10 can be stably transmitted. Compared with the traditional gap elimination structure, it has a small number of parts and is easy to install. It can effectively solve the problem of large up and down movement difference of the X-axis assembly 16 caused by deformation of the transmission member 10 or assembly deviation of the external structural member 11, reduce the phenomenon of defects such as multiple layers, missing layers and layer patterns in the printed model, and effectively improve the printing quality of the printer.

[0084] like Fig.10 As shown, in a feasible embodiment, the fixing seat 23 includes: a first main body 232 and a clamping portion 233; the second threaded connection 231 is connected to the first main body 232; the clamping portion 233 is connected to the first main body 232, the clamping portion 233 extends in a direction close to the elastic compensation seat 20, and the clamping portion 233 is clamped with the elastic compensation seat 20.

[0085] In this technical solution, the second threaded connector 231 is connected to the first body 232, and the clamping portion 233 is arranged on the first body 232, so that the fixing seat 23 is clamped and connected with the elastic compensation seat 20 through the clamping portion 233, thereby splicing the split structure into one and pressing the elastic member 24, so that the elastic member 24 can apply a force to the elastic compensation seat 20 and the fixing seat 23 when the transmission member 10 is not deformed, that is, apply a force to the first threaded connector 12 and the second threaded connector 231, eliminate the axial gap between the two threaded connectors and the transmission member 10 during threaded transmission, and then eliminate the up and down drop that occurs when the X-axis assembly 16 moves, thereby avoiding defects such as multiple layers, missing layers and layer patterns of the printed model, reducing movement jams, and improving the quality of printed products.

[0086] In this technical solution, by providing a snap-fit ​​portion 233 on the first body 232, the first body 232 is snap-fitted to the elastic compensation seat 20, so that the fixed seat 23 and the elastic compensation seat 20 can be quickly disassembled and assembled, which is beneficial to improving the assembly and maintenance efficiency of the printer.

[0087] like Fig.10As shown, in a feasible embodiment, a receiving groove 234 is provided on the top of the first main body 232, and the receiving groove 234 is recessed in a direction away from the elastic compensation seat 20. The second threaded connecting member 231 is located in the receiving groove 234, and the elastic member 24 is mounted on the outer side of the second threaded connecting member 231 to limit the elastic member 24.

[0088] In this technical solution, a receiving groove 234 is provided on the top of the first main body 232 so that the interior of the first main body 232 is hollow and the fixing seat 23 also has a sufficiently strong deformation ability, so that the gap between the second threaded connector 231 and the transmission member 10 is compensated by the elastic deformation of the fixing seat 23 itself; the elastic member 24 is sleeved on the outer side of the second threaded connector 231 so that the elastic member 24 can be stably installed on the first main body 232 through the second threaded connector 231, thereby ensuring the stability of the elastic member 24 after being tightened and preventing the elastic member 24 from tilting after being compressed, so that the force of the elastic member 24 on the elastic compensation seat 20 and the fixing seat 23 is parallel to the axis of the transmission member 10, thereby effectively compensating for the axial gap between the threaded connector and the transmission member 10.

[0089] like Fig.11 and Fig.13 As shown, in a feasible embodiment, the elastic compensation seat 20 includes: a second body 201, a third body 202 and a coupling portion 203; a first deformation cavity is arranged inside the second body 201; a second deformation cavity is arranged inside the third body 202, the third body 202 is connected to the first threaded connection member 12, and there is a distance between the third body 202 and the second body 201; the coupling portion 203 connects the second body 201 and the third body 202 to form a third deformation cavity 32 between the second body 201 and the third body 202.

[0090] In this technical solution, a first deformation cavity is provided inside the second body 201 to ensure that there is sufficient gap between the second body 201 and the transmission member 10, thereby ensuring that the second body 201 has sufficient deformation space, and also to avoid the second body 201 and the transmission member 10 from being closely fitted together during installation, and the transmission member 10 generating friction with the second body 201 when rotating, causing the second body 201 to wear or hinder the rotation of the transmission member 10; the third body 202 is connected to the second body 201 through the joint 203, and there is a gap between the third body 202 and the second body 201 and a third deformation cavity 32 is formed, so that there is sufficient deformation space between the third body 202 and the second body 201, thereby improving the deformation capacity of the elastic compensation seat 20, and at the same time, a second deformation cavity 31 is provided inside the third body 202, so that the transmission member 10 does not hinder the deformation of the second body 201, further improving the deformation capacity of the elastic compensation seat 20, and enabling the entire elastic compensation seat 20 to produce a large deformation, thereby improving the effect of the transmission connection structure compensating the gap between the transmission member 10 and the threaded connector.

[0091] like Figures 11 to 13 As shown, in a feasible embodiment, the second main body 201 includes: a first connecting portion 2011 and a first deformation portion 2012; the first connecting portion 2011 is used to connect with the external structural member 11; the first deformation portion 2012 is connected to the combining portion 203, the first deformation portion 2012 is connected to the first connecting portion 2011, and a first deformation cavity 30 is formed between the first deformation portion 2012 and the first connecting portion 2011.

[0092] In this technical solution, the first connecting portion 2011 is used to connect the elastic compensation seat 20 to the external structural member 11. When the transmission member 10 is bent and / or there is a deviation in the assembly of the external structural member 11, the horizontal spacing between the transmission member 10 and the first threaded connection member 12 and the external structural member 11 will change, causing the first connecting portion 2011 close to the external structural member 11 and the third body 202 close to the first threaded connection member 12 to deform first. Since the first connecting portion 2011 is connected to the first deformable portion 2012, the first deformable portion 2012 is deformed. 012 is connected to the third body 202 through the joint 203. Therefore, when the first connection part 2011 and the third body 202 are deformed, the deformation will be transmitted to the first deformation part 2012 and the joint 203, so that the elastic compensation seat 20 is deformed as a whole to offset the interaction force between the transmission member 10 and the external structural member 11, reduce the influence of the position deviation between the transmission member 10 and the external structural member 11 on the transmission of the transmission member 10 and the first threaded connection member 12, and ensure that the transmission member 10 and the first threaded connection member 12 rotate smoothly.

[0093] like Figures 11 to 13As shown, in a feasible embodiment, the third main body 202 includes: a second connecting portion 2021 and a second deformation portion 2022; the second connecting portion is used to connect to the first threaded connector 12; the second deformation portion 2022 is connected to the combining portion 203, the second deformation portion 2022 is connected to the second connecting portion 2021, and the second deformation portion 2022 is arranged around the outside of the second connecting portion 2021 to form a fourth deformation cavity 33 between the second deformation portion 2022 and the second connecting portion 2021.

[0094] In this technical solution, the second connecting portion is used to connect with the first threaded connecting member 12, the second deformation portion 2022 is connected to the second connecting portion 2021, and the second deformation portion 2022 is connected to the first deformation portion 2012 through the coupling portion 203. Since the second deformation portion 2022 is arranged around the outer side of the second connecting portion 2021, a fourth deformation cavity 33 is formed between the second connecting portion 2021 and the second deformation portion 2022, so that the interior of the third main body 202 is hollow, and the third main body 202 also has sufficient deformation ability, so that the entire elastic compensation seat 20 can follow the deformation of the transmission member 10 and produce a sufficiently large deformation, thereby compensating for the gap between the first threaded connecting member 12 and the transmission member 10.

[0095] like Figure 5 As shown, according to the second aspect of the present application, a 3D printer is proposed, comprising: a transmission connection structure as in any one of the above technical solutions, the transmission member 10 is a screw rod, and the external structural member 11 is an X-axis guide wheel assembly.

[0096] By using the 3D printing device provided by the embodiment of the present application, during use, the first threaded connector 12 is sleeved on the outside of the screw and is connected to the screw thread transmission. By connecting the elastic compensation seat 20 to the first threaded connector 12, and connecting the elastic compensation seat 20 to the X-axis guide wheel assembly, the X-axis guide wheel assembly is connected to the screw transmission through the elastic compensation seat 20, and then the X-axis guide wheel assembly is driven to perform lifting movement on the screw through the rotation of the screw. The elastic compensation seat 20 is elastic and can make the connection between the first threaded connector 12 and the X-axis guide wheel assembly a non-rigid connection. Therefore, when the screw itself is bent and / or there is a deviation in the assembly of the X-axis guide wheel assembly, the first threaded connector 12 can still As the lead screw moves, the lead screw guides the first threaded connector 12 through the elastic deformation of the elastic compensation seat 20, eliminating the assembly gap between the first threaded connector 12 and the lead screw, ensuring that the lead screw and the first threaded connector 12 can fit closely, so that the first threaded connector 12 can rotate smoothly during the transmission process with the lead screw, and the force on the first threaded connector 12 is more balanced, thereby improving the flexibility and smoothness of the movement of the X-axis guide wheel assembly, reducing the height difference of the printer's X-axis assembly 16 moving up and down, thereby reducing the occurrence of jams and severe vibrations in the process of printing the model with the 3D printer, reducing the phenomenon of defects such as multiple layers, missing layers and layer patterns in the printed model, and improving the printing quality of the printer.

[0097] It is easy for those skilled in the art to understand that, under the premise of no conflict, the above-mentioned advantageous methods can be freely combined and superimposed.

[0098] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application. The above are only preferred implementations of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present application, and these improvements and variations should also be regarded as the protection scope of the present application.

Claims

1. A transmission connection structure, characterized in that: The transmission connection structure comprises: An elastic compensation seat, used for connecting with an external structural member; a first threaded connector, wherein the elastic compensation seat is connected to the transmission member via the first threaded connector; The first threaded connection member eliminates transmission imbalance between the first threaded connection member and the transmission member through elastic deformation of the elastic compensation seat.

2. A transmission connection structure according to claim 1, characterized in that: The transmission connection structure also includes: A first fastener, wherein the first threaded connector is installed on an end of the elastic compensation seat away from the external structural component through the first fastener.

3. A transmission connection structure according to claim 1, characterized in that: The elastic compensation seat comprises a first end surface, and the first end surface has a preset angle with the horizontal plane; Wherein, the first end surface is the mounting surface of the external structural component and the elastic compensation seat.

4. A transmission connection structure according to claim 3, characterized in that: The first threaded connector and the elastic compensation seat are integrally formed, and the preset angle is between 0 degrees and 5 degrees.

5. A transmission connection structure according to claim 1, characterized in that: The transmission connection structure also includes: A fixing seat, the fixing seat being movably connected to the elastic compensation seat; The fixing seat comprises a second threaded connection member, and the fixing seat is connected to the transmission member via the second threaded connection member; The elastic member is arranged between the fixing seat and the elastic compensation seat.

6. A transmission connection structure according to claim 5, characterized in that: The fixing seat also includes: A first main body, wherein the second threaded connector is connected to the first main body; A clamping portion, which is connected to the first main body, extends in a direction close to the elastic compensation seat, and is clamped with the elastic compensation seat.

7. A transmission connection structure according to claim 6, characterized in that: A receiving groove is provided on the top of the first body, the receiving groove is recessed in a direction away from the elastic compensation seat, and the second threaded connector is located in the receiving groove; The elastic member is sleeved on the outer side of the second threaded connection member to limit the position of the elastic member.

8. A transmission connection structure according to any one of claims 1 to 7, characterized in that: The elastic compensation seat comprises: A second body, wherein a first deformation cavity is disposed inside the second body; A third body, wherein a second deformation cavity is provided inside the third body, the third body is connected to the first threaded connector, and there is a distance between the third body and the second body; A combining portion connects the second body and the third body to form a third deformation cavity between the second body and the third body.

9. A transmission connection structure according to claim 8, characterized in that: The second entity includes: A first connecting portion, the first connecting portion being used to connect to the external structural member; A first deformation portion, wherein the first deformation portion is connected to the combining portion, the first deformation portion is connected to the first connecting portion, and the first deformation cavity is formed between the first deformation portion and the first connecting portion.

10. A transmission connection structure according to claim 8, characterized in that: The third entity includes: a second connection portion, the second connection portion being used to connect with the first threaded connection member; A second deformation portion, wherein the second deformation portion is connected to the combining portion, the second deformation portion is connected to the second connecting portion, and the second deformation portion is arranged around the outside of the second connecting portion to form a fourth deformation cavity between the second deformation portion and the second connecting portion.

11. A 3D printer, characterized in that: It comprises the transmission connection structure as described in any one of claims 1 to 10, wherein the transmission member is a screw rod, and the external structural member is an X-axis guide wheel assembly.

Images