X-axis assembly and 3D printing device

Abstract

The present application relates to the field of 3D printing, and provides an X-axis assembly and a 3D printing device. The X-axis assembly comprises a print head module, an X-direction driving assembly, and at least two X-direction transmission shafts. The print head module is configured to output consumables so as to print a printed piece on a printing platform assembly. The X-direction driving assembly is transmittingly connected to the print head module so as to drive the print head module to move. The two X-direction transmission shafts respectively extend in the X direction, and the print head module is movably mounted in the X direction on the two X-direction transmission shafts. The two X-direction transmission shafts are spaced apart in a Z direction and staggered in a Y direction, and the X direction, the Y direction, and the Z direction are perpendicular to each other.

Description

X-axis components and 3D printing equipment

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese Patent Application No. 202420574317.5 filed on March 22, 2024, the contents of which are incorporated herein by reference in their entirety. Technical Field

[0003] The present application relates to the field of 3D printing, and more specifically, to an X-axis assembly and a 3D printing device. Background Art

[0004] 3D printing equipment, such as some 3D printing equipment based on FDM (Fused Deposition Modeling) technology, uses a print head module to melt and extrude the consumable material and print layer by layer to obtain a printed part.

[0005] Summary of the Invention

[0006] The present application provides an X-axis assembly and a 3D printing device to solve the problem that a conventional print head module may easily cause the supported X-axis transmission shaft to undergo torsional deformation.

[0007] The embodiment of the present application is implemented as follows:

[0008] In a first aspect, the present application provides an X-axis assembly, comprising:

[0009] a print head module, the print head module being configured to output consumables to print a print on the print platform assembly;

[0010] An X-axis drive assembly is connected to the print head module to drive the print head module to move;

[0011] as well as,

[0012] At least two X-direction transmission shafts, wherein the two X-direction transmission shafts extend along the X-direction respectively, and the print head module is movably mounted on the two X-direction transmission shafts along the X-direction;

[0013] The two X-direction transmission shafts are spaced apart along the Z-direction and staggered along the Y-direction, and the X-direction, the Y-direction and the Z-direction are perpendicular to each other.

[0014] In one possible implementation:

[0015] The X-direction drive assembly includes an X-direction drive motor and a transmission mechanism. The X-direction drive motor is connected to the transmission mechanism, and the transmission mechanism is connected to the print head module. The X-direction drive motor can drive the print head module to move along the X direction through the transmission mechanism.

[0016] The print head module has a transmission connection portion and two sliding matching holes, the two sliding matching holes are respectively slidably matched with the two X-direction transmission shafts, and the transmission connection portion is connected to the transmission mechanism;

[0017] The projections of the transmission connection portion and the two sliding fitting holes in a plane perpendicular to the X-direction are distributed in a triangular shape.

[0018] In one possible implementation:

[0019] The X-direction drive assembly includes an X-direction drive motor and a transmission mechanism. The X-direction drive motor is connected to the transmission mechanism, and the transmission mechanism is connected to the print head module. The X-direction drive motor can drive the print head module to move along the X-direction through the transmission mechanism.

[0020] In one possible implementation:

[0021] The transmission mechanism is a belt transmission mechanism. The print head module has a transmission connection portion and two sliding matching holes. The two sliding matching holes can slidably match the two X-direction transmission shafts respectively. The transmission connection portion is connected to the belt transmission mechanism.

[0022] The projections of the transmission connection portion and the two sliding fitting holes in a plane perpendicular to the X-direction are distributed in a triangular shape.

[0023] In one possible implementation:

[0024] The X-axis assembly further includes at least two heat dissipation assemblies respectively arranged at both ends of the X-axis transmission shaft, and the heat dissipation assemblies are configured to blow air toward the print head module.

[0025] In one possible implementation:

[0026] The X-axis assembly also includes two connecting brackets; the two connecting brackets are respectively located at both ends of the X-axis transmission shaft, and the ends of the X-axis transmission shaft are fixed to the connecting brackets at the corresponding ends;

[0027] At least two heat dissipation components are respectively connected to the two connecting brackets.

[0028] In one possible implementation:

[0029] The heat dissipation assembly includes a heat dissipation fan and an air guide; one end of the air guide is connected to the heat dissipation fan, and the other end faces the print head module.

[0030] In a second aspect, the present application provides a 3D printing device, comprising:

[0031] The aforementioned X-axis assembly;

[0032] Base assembly; the base assembly includes a base assembly and a gantry, the gantry includes a crossbeam and two columns, the columns are connected to the base assembly and extend along the Z direction, and the two columns are spaced apart from each other along the X direction, and the crossbeam is connected between the two columns at one end away from the base assembly; two X-direction drive shafts are respectively located on both sides of the columns in the Y direction;

[0033] The printing platform assembly is movably arranged on the base assembly along the Y direction and is used to carry the printed workpiece.

[0034] In one possible implementation:

[0035] The X-axis assembly also includes two connecting brackets;

[0036] The two connecting brackets are respectively located at both ends of the X-direction transmission shaft, and the ends of the two X-direction transmission shafts are respectively fixed to the connecting brackets at the corresponding ends;

[0037] The connecting bracket is slidably matched with the gantry along the Z direction and can be driven to move along the Z direction. The two X-direction transmission shafts are respectively located on both sides of the Y direction of the column.

[0038] In one possible implementation:

[0039] The 3D printing device also includes two Z-axis optical axes and two Z-axis drive assemblies. The two Z-axis optical axes are respectively fixed to the gantry, and the two Z-axis optical axes are respectively parallel to the two columns and spaced apart.

[0040] The Z-axis drive assembly includes a Z-axis drive motor and a screw slider mechanism. The screw of the screw slider mechanism extends along the Z direction and is rotatably connected to the gantry. The Z-axis drive motor drives the screw to drive the screw to rotate. The slider of the screw slider mechanism is threaded and engaged with the screw.

[0041] The connecting bracket is connected to the slider.

[0042] In a third aspect, the present application further provides a 3D printing device, comprising:

[0043] Framework components;

[0044] The aforementioned X-axis assembly; the X-axis assembly is movably connected to the frame assembly along the Y direction;

[0045] The printing platform assembly is movably arranged on the frame assembly along the Z direction. The printing platform assembly is located below the print head module in the Z direction and is used to carry the printed parts printed by the print head module.

[0046] The 3D printing device in the present application has two X-axis drive shafts of its X-axis assembly that are stepped and spaced apart in the Z direction and in the Y direction. Compared with the known method in which the two X-axis drive shafts overlap in the Y direction, this device can better adapt to print head modules with uneven weight distribution in the Y direction, reduce the tendency of the print head module to deflect to one side relative to the X-axis drive shaft due to uneven weight distribution in the Y direction, and also reduce torsional deformation of the X-axis drive shaft caused by the force of the print head module with uneven weight distribution in the Y direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0048] FIG1 is a perspective view of a 3D printing device according to one or more embodiments of the present application;

[0049] FIG2 is a cross-sectional view of the 3D printing device of FIG1 ;

[0050] Figure 3 is an enlarged view of point A in Figure 2;

[0051] FIG4 is a partially enlarged view of FIG1 ;

[0052] FIG5 is another perspective view of the figure;

[0053] FIG6 is a top view of a portion of the structure of FIG1 ;

[0054] FIG7 is a partially enlarged view of FIG6 ;

[0055] FIG8 is a perspective view of a connecting bracket in one or more embodiments of the present application;

[0056] FIG9 is a front view of a 3D printing device according to one or more embodiments of the present application;

[0057] FIG10 is a top view of the 3D printing device of FIG9 .

[0058] Description of main component symbols:

[0059] 3D printing equipment 100,100A

[0060] Base assembly 10

[0061] Printing platform component 11

[0062] X-axis assembly 12

[0063] Rack 13

[0064] Base assembly 14

[0065] Gantry 15

[0066] Material volume 16

[0067] Print head module 17

[0068] X-direction drive assembly 18

[0069] X-axis transmission shaft 19

[0070] X-axis drive motor 20

[0071] Transmission mechanism 21

[0072] Transmission connection part 22

[0073] Crossbar 23

[0074] Column 24

[0075] Connecting bracket 25

[0076] Z-axis drive motor 26

[0077] Screw slider mechanism 27

[0078] Screw 28

[0079] Slider 29

[0080] Substrate 30

[0081] Install the raised ring 31

[0082] Z-direction seat sleeve 32

[0083] Horizontal board 33

[0084] Driving pulley 34

[0085] Drive belt 36

[0086] Heat dissipation component 37

[0087] Z-axis 38

[0088] Z-direction drive assembly 39

[0089] Frame assembly 40

[0090] First rectangular frame 41

[0091] Second rectangular frame 42

[0092] Frame column 43

[0093] Cooling fan 44

[0094] Air guide 45

[0095] Sliding fit hole K1

[0096] Through hole K2 DETAILED DESCRIPTION

[0097] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0098] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may also be an element centered therein. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may also be an element centered therein. When an element is considered to be "set on" another element, it may be directly set on the other element or there may also be an element centered therein. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0099] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "or / and" as used herein includes any and all combinations of one or more of the relevant listed items.

[0100] Some embodiments of the present application are described in detail. In the absence of conflict, the following embodiments and features of the embodiments can be combined with each other.

[0101] In some known technologies, the print head module can be slidably supported on two X-axis transmission shafts spaced apart vertically (in the Z direction). This may cause the print head module to apply a large torque to the X-axis transmission shaft due to uneven weight distribution, which may cause the X-axis transmission shaft to deform.

[0102] In view of this, an embodiment of the present application provides a 3D printing device 100 that can solve the above problems.

[0103] 1 and 2 , this embodiment provides a 3D printing device 100 , including a base assembly 10 , a printing platform assembly 11 , an X-axis assembly 12 , and a material rack 13 .

[0104] The base assembly 10 includes a base assembly 14 and a gantry 15 . The gantry 15 is connected to the base assembly 14 and stands upright along the Z direction.

[0105] The printing platform assembly 11 is movably disposed on the base assembly 14 along the Y direction for supporting printed workpieces.

[0106] The material rack 13 is mounted on the base assembly 10 and is used to carry a material roll 16 wound with consumables.

[0107] The X-axis assembly 12 is movably connected to the gantry 15 of the base assembly 10 along the Z direction. Among them, the X direction, Y direction and Z direction are perpendicular to each other. When in use, the Z direction is generally in the vertical direction, and the X direction and Y direction are two mutually perpendicular horizontal directions.

[0108] The X-axis assembly 12 includes a printhead module 17, an X-axis drive assembly 18, and at least two X-axis drive shafts 19. The printhead module 17 is used to print products on the printing platform assembly 11. The two X-axis drive shafts 19 extend in the X-direction. The printhead module 17 is movably mounted on the two X-axis drive shafts 19 in the X-direction. The X-axis drive assembly 18 is in driving connection with the printhead module 17 to drive the printhead module 17 in the X-direction.

[0109] 3 , the two X-direction transmission shafts 19 are spaced apart along the Z direction and staggered along the Y direction. That is, as shown in FIG3 , the line connecting the two X-direction transmission shafts 19 is inclined to the Z direction and the Y direction respectively.

[0110] In a certain embodiment of the 3D printing device 100, the two X-axis drive shafts 19 of the X-axis assembly 12 are stepped and spaced apart in the Z direction and in the Y direction, and the print head module 17 has two support points spaced apart in the Y direction. Compared with the conventional method of having two X-axis drive shafts 19 overlap in the Y direction, this method can better accommodate print head modules 17 with uneven weight distribution in the Y direction, reduce the tendency of the print head module 17 to deflect to one side relative to the X-axis drive shaft 19 due to the uneven weight distribution in the Y direction, and also reduce the torsional deformation of the X-axis drive shaft 19 caused by the force of the print head module 17 with uneven weight distribution in the Y direction.

[0111] In one embodiment, the X-axis drive assembly includes an X-axis drive motor 20 (see Figures 6 or 7) and a transmission mechanism 21. The X-axis drive motor 20 is connected to the transmission mechanism 21, which is in turn connected to the printhead module 17. The X-axis drive motor 20, through the transmission mechanism 21, can drive the printhead module 17 in the X-axis direction. The printhead module 17 has a transmission connection 22 and two sliding holes K1, each of which slidably engages with two X-axis drive shafts 19. The transmission connection 22 is connected to the transmission mechanism 21. As shown in Figure 3, the projections of the transmission connection 22 and the two sliding holes K1 on a plane perpendicular to the X-axis form a triangular shape. While the two inclined X-axis drive shafts 19 provide reliable and balanced support for the printhead module 17, the transmission mechanism 21's placement outside the line connecting the centers of the two optical axes and the driving force applied to the printhead module 17 ensure relatively stable drive of the printhead module 17, resulting in relatively smooth movement of the printhead module 17 in the X-axis.

[0112] In one embodiment, the gantry 15 includes a crossbeam 23 and two columns 24 . The columns 24 are connected to the base assembly 14 and extend along the Z direction. The two columns 24 are spaced apart from each other along the X direction. The crossbeam 23 is connected between the two columns 24 at one end away from the base assembly 14 .

[0113] 4 or 5 , the two X-axis drive shafts 19 are located on either side of the Y axis of the column 24. In this embodiment, the print head module is connected to the two X-axis drive shafts on either side of the column, so that the weight of the print head module is distributed on both sides of the column and can be transmitted to the column in a relatively balanced manner, resulting in a reasonable and reliable structure.

[0114] 6-8 , the X-axis assembly 12 further includes two connecting brackets 25, located at either end of the X-axis drive shaft 19. The ends of the two X-axis drive shafts 19 are fixed to the corresponding connecting brackets 25. The connecting brackets 25 are slidably engaged with the gantry 15 along the Z-direction and can be driven to move in the Z-direction.

[0115] To drive the X-axis assembly 12, the 3D printing device 100 also includes two Z-axis optical axes 38 and two Z-axis drive assemblies 39. The two Z-axis optical axes 38 are respectively fixed to the gantry 15 and positioned adjacent to the two columns 24, parallel to and spaced from the adjacent Z-axis optical axes 38. The Z-axis drive assembly 39 includes a Z-axis drive motor 26 and a screw-slider mechanism 27. The screw 28 of the screw-slider mechanism 27 extends in the Z direction and is rotatably connected to the gantry 15. The Z-axis drive motor 26 drives the screw 28, driving its rotation. The slider 29 of the screw-slider mechanism 27 is threadedly engaged with the screw 28. A connecting bracket 25 is connected to the slider 29. In this way, when it is necessary to drive the X-axis component to move along the Z-axis, the Z-axis drive motor of the Z-axis drive component 39 on both sides of the gantry 15 can be used to drive the screw rod 28 to rotate, and through the cooperation of the screw rod 28 and the slider 29, the slider 29 and the X-axis component 12 can be driven to move along the Z-axis.

[0116] Alternatively, in the Y direction, the column 24 and the Z-axis 38 are located between the two X-axis drive shafts 19, and the lead screw 28 is located outside the two X-axis drive shafts 19. The lead screw 28 and the Z-axis 38 are parallel and spaced apart, sandwiching one of the X-axis drive shafts 19. This arrangement provides a more balanced distribution of gravity on the printhead module 17, and the lead screw 28 drives the X-axis assembly to move more smoothly in the Z direction.

[0117] In one embodiment, the connecting bracket 25 includes a base plate 30. Two mounting collars 31 are protruding from the surface of the base plate 30 facing the X-axis drive shaft 19. The ends of the two X-axis drive shafts 19 fit within the two mounting collars 31 and are secured to the base plate 30 via screws. A Z-axis sleeve 32 is connected to the base plate 30 and slidably engages the Z-axis optical axis 38. A cross plate 33 is perpendicularly connected to the base plate 30, to which the slider 29 is attached. The cross plate 33 defines a through hole K2 extending along the Z direction to allow the lead screw 28 to pass through. This connecting bracket 25 securely secures the X-axis drive shaft 19 while also slidably engaging the Z-axis optical axis 38 and connecting to the slider 29 of the lead screw slider mechanism 27. The compact structure of the connecting bracket 25 allows for reliable load transfer from the lead screw slider mechanism 27. Optionally, two Z-axis sleeves 32 are provided, one located on either side of the cross plate 33 in the Z direction. This improves the coordination stability between the print head module 17 and the Z-axis optical axis 38 .

[0118] In one embodiment, the transmission mechanism 21 is a belt drive mechanism comprising a driving pulley 34, a driven pulley (not shown), and a transmission belt 36. The X-axis drive motor 20 and the driving pulley 34 are mounted on one connecting bracket 25, while the driven pulley is mounted on the other connecting bracket 25. The transmission belt 36 is connected between the driving pulley 34 and the driven pulley. The transmission connection portion 22 of the printhead module 17 is connected to the transmission belt 36, enabling the printhead module 17 to be driven by the transmission belt 36 for displacement in the X-axis.

[0119] In this way, the X-direction driving motor 20 located on one connecting bracket 25 can drive the transmission belt 36 to rotate via the driving pulley 34, thereby driving the print head module 17 connected to the transmission belt 36 to move along the X-direction.

[0120] In a certain embodiment, the Z-direction positions of the cross plate 33 and the transmission belt 36 are located between the two X-direction transmission shafts 19. In this way, the point where the screw slider mechanism 27 applies force to the print head module 17 is located between the support positions of the two X-direction transmission shafts 19 on the print head module 17. The print head module 17 is subjected to reasonable force and moves more smoothly.

[0121] In one embodiment, the X-axis assembly 12 further includes two heat sink assemblies 37, each connected to the two connecting brackets 25. Each heat sink assemblies 37 faces the printhead module 17 and is used to dissipate heat from the printhead module 17. In one embodiment, the heat sink assemblies 37 include a cooling fan 44 and an air guide 45. One end of the air guide 45 is connected to the air outlet of the cooling fan 44 and the other end faces the printhead module 17. When the cooling fan 44 is in operation, the airflow is directed by the air guide 45 toward the printhead module 17, thereby dissipating heat from the printhead module 17.

[0122] 9 and 10 show a 3D printing device 100A according to another embodiment of the present application.

[0123] 9 and 10 , in one embodiment, a 3D printing device 100A includes a frame assembly 40 , a printing platform assembly 11 , and an X-axis assembly 12 .

[0124] The frame assembly 40 is a roughly rectangular parallelepiped structure, comprising a first rectangular frame 41 at the bottom, a second rectangular frame 42 at the top, and four frame columns 43 connecting the first and second rectangular frames 41, 42. The frame columns 43 extend along the Z direction, while the first and second rectangular frames 41, 42 each have one side extending along the X direction and the other side extending along the Y direction. The X, Y, and Z directions are perpendicular to each other.

[0125] Similarly, the X-axis assembly 12 also includes a printhead module 17, an X-axis drive assembly 18, and at least two X-axis drive shafts 19. The printhead module 17 is configured to output consumables to produce printed products on the printing platform assembly 11. The X-axis drive assembly 18 is in driving connection with the printhead module 17 to drive its movement. The two X-axis drive shafts 19 extend in the X-direction, and the printhead module 17 is movably mounted on the two X-axis drive shafts 19 in the X-direction. The two X-axis drive shafts 19 are spaced apart in the Z-direction and staggered in the Y-direction.

[0126] The X-axis assembly 12 is movably connected to the frame assembly 40 along the Y-axis and can be driven to move in the Y-axis. In one embodiment, the X-axis assembly 12 can be positioned within the second rectangular frame 42 at the top. The printing platform assembly 11 is movably mounted on the frame assembly 40 along the Z-axis. The printing platform assembly 11 is positioned below the printhead module 17 in the Z-axis direction and is used to support the printed workpieces printed by the printhead module 17.

[0127] In this way, the print head module 17 can move along the X-direction on the X-direction transmission shaft 19, or move along the Y-direction as the print head module 17 as a whole moves along the Y-direction, that is, the print head module 17 can move along the X-direction and / or the Y-direction, combined with the displacement of the printing platform assembly 11 along the Z-direction, so that during the printing process, the print head module 17 and the printing platform assembly 11 can achieve relative displacement along the X-direction, the Y-direction and the Z-direction, thereby printing a three-dimensional printed part.

[0128] The Y-axis and Z-axis displacements may be driven by a synchronous belt mechanism, a screw-nut mechanism or other linear drive structures, which will not be described in detail here.

[0129] Similarly, the X-axis assembly 12 of the 3D printing device 100A also has this technical effect: it can better adapt to the print head module 17 with uneven weight distribution in the Y direction, reduce the tendency of the print head module 17 to deflect to one side relative to the X-axis transmission shaft 19 due to the uneven weight distribution in the Y direction, and also reduce the torsional deformation of the X-axis transmission shaft 19 caused by the action of the print head module 17 with uneven weight distribution in the Y direction.

[0130] The above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit the present application. Although the present application has been described in detail with reference to the above preferred embodiments, those skilled in the art should understand that modifications or equivalent replacements of the technical solutions of the present application should not depart from the spirit and scope of the technical solutions of the present application.

Claims

1. An X-axis assembly, characterized in that: include: a print head module configured to output consumables to print a print on the print platform assembly; An X-axis driving assembly, the X-axis driving assembly being transmission-connected to the print head module to drive the print head module to move; as well as, At least two X-direction transmission shafts, wherein the two X-direction transmission shafts extend along the X-direction respectively, and the print head module is movably mounted on the two X-direction transmission shafts along the X-direction; The two X-direction transmission shafts are spaced apart along the Z-direction and staggered along the Y-direction, and the X-direction, the Y-direction and the Z-direction are perpendicular to each other.

2. The X-axis assembly according to claim 1, wherein: The X-direction drive assembly includes an X-direction drive motor and a transmission mechanism. The X-direction drive motor is connected to the transmission mechanism, and the transmission mechanism is connected to the print head module. The X-direction drive motor can drive the print head module to move along the X direction through the transmission mechanism.

3. The X-axis assembly according to claim 2, characterized in that: The transmission mechanism is a belt transmission mechanism, the print head module has a transmission connection portion and two sliding matching holes, the two sliding matching holes are respectively slidably matched with the two X-direction transmission shafts, and the transmission connection portion is connected to the belt transmission mechanism; The projections of the transmission connection portion and the two sliding fitting holes in a plane perpendicular to the X-direction are distributed in a triangular shape.

4. The X-axis assembly according to claim 1, wherein: The X-axis assembly further includes at least two heat dissipation assemblies respectively arranged at both ends of the X-axis transmission shaft, and the heat dissipation assemblies are configured to blow air toward the print head module.

5. The X-axis assembly according to claim 4, characterized in that: The X-axis assembly also includes two connecting brackets; the two connecting brackets are respectively located on the X-axis At both ends of the transmission shaft, the ends of the X-direction transmission shaft are fixed to the connecting brackets at the corresponding ends; At least two of the heat dissipation components are respectively connected to the two connecting brackets.

6. The X-axis assembly according to claim 4, characterized in that: The heat dissipation assembly includes a heat dissipation fan and an air guide; one end of the air guide is connected to the heat dissipation fan, and the other end faces the print head module.

7. A 3D printing device, characterized in that: include: X-axis assembly; the X-axis assembly includes a print head module, an X-direction drive assembly and at least two X-direction transmission shafts; The print head module is configured to output consumables to print a print on the printing platform assembly; the X-axis drive assembly is connected to the print head module to drive the print head module to move; wherein the two X-axis drive shafts extend respectively in the X-axis, and the print head module is movably mounted on the two X-axis drive shafts in the X-axis; wherein the two X-axis drive shafts are spaced apart in the Z-axis and staggered in the Y-axis, and the X-axis, Y-axis, and Z-axis directions are perpendicular to each other; Base assembly; The base assembly includes a base assembly and a gantry, the gantry includes a crossbeam and two columns, the columns are connected to the base assembly and extend along the Z direction, and the two columns are spaced apart from each other along the X direction, the crossbeam is connected between the two columns at one end away from the base assembly; the two X-direction transmission shafts are respectively located on both sides of the columns in the Y direction; The printing platform assembly is movably arranged on the base assembly along the Y direction and is used to carry the printed workpiece.

8. The 3D printing device according to claim 7, characterized in that: The X-axis assembly also includes two connecting brackets; The two connecting brackets are respectively located at both ends of the X-direction transmission shaft, and the ends of the two X-direction transmission shafts are respectively fixed to the connecting brackets at the corresponding ends; The connecting bracket is slidably matched with the gantry along the Z direction and can be driven to move along the Z direction. The two X-direction transmission shafts are respectively located on both sides of the column in the Y direction.

9. The 3D printing device according to claim 8, characterized in that: The 3D printing device further includes two Z-direction transmission shafts and two Z-direction drive assemblies, wherein the two Z-direction transmission shafts are respectively fixed to the gantry, and the two Z-direction transmission shafts are respectively connected to the two columns. parallel spacing; The Z-axis drive assembly includes a Z-axis drive motor and a screw slider mechanism, wherein the screw of the screw slider mechanism extends along the Z direction and is rotatably connected to the gantry, and the Z-axis drive motor is connected to the screw for driving the screw to rotate; the slider of the screw slider mechanism is threadedly engaged with the screw; The connecting bracket is connected to the sliding block.

10. The 3D printing device according to claim 7, characterized in that: The X-direction drive assembly includes an X-direction drive motor and a transmission mechanism. The X-direction drive motor is connected to the transmission mechanism, and the transmission mechanism is connected to the print head module. The X-direction drive motor can drive the print head module to move along the X direction through the transmission mechanism.

11. The 3D printing device according to claim 10, characterized in that: The transmission mechanism is a belt transmission mechanism, the print head module has a transmission connection portion and two sliding matching holes, the two sliding matching holes are respectively slidably matched with the two X-direction transmission shafts, and the transmission connection portion is connected to the belt transmission mechanism; The projections of the transmission connection portion and the two sliding fitting holes in a plane perpendicular to the X-direction are distributed in a triangular shape.

12. The 3D printing device according to claim 7, wherein: The X-axis assembly further includes at least two heat dissipation assemblies respectively arranged at both ends of the X-axis transmission shaft, and the heat dissipation assemblies are configured to blow air toward the print head module.

13. The 3D printing device according to claim 12, wherein: The X-axis assembly further includes two connecting brackets; the two connecting brackets are respectively located at both ends of the X-direction transmission shaft, and the ends of the X-direction transmission shaft are fixed to the connecting brackets at the corresponding ends; At least two of the heat dissipation components are respectively connected to the two connecting brackets.

14. The 3D printing device according to claim 12, wherein: The heat dissipation assembly includes a heat dissipation fan and an air guide; one end of the air guide is connected to the heat dissipation fan, and the other end faces the print head module.

15. A 3D printing device, characterized in that: include: Framework components; X-axis assembly; the X-axis assembly includes a print head module, an X-direction drive assembly and at least two X-direction transmission shafts; The print head module is configured to output consumables to print a print on the printing platform assembly; the X-axis drive assembly is connected to the print head module in a transmission manner to drive the print head module to move; wherein the two X-axis transmission shafts extend respectively in the X direction, and the print head module is movably mounted on the two X-axis transmission shafts in the X direction; wherein the two X-axis transmission shafts are spaced apart in the Z direction and staggered in the Y direction, and the X, Y and Z directions are perpendicular to each other; the X-axis assembly is movably connected to the frame assembly in the Y direction; The printing platform assembly is movably arranged on the frame assembly along the Z direction. The printing platform assembly is located below the print head module in the Z direction and is used to carry the printed parts printed by the print head module.

16. The 3D printing device according to claim 15, characterized in that: The X-direction drive assembly includes an X-direction drive motor and a transmission mechanism. The X-direction drive motor is connected to the transmission mechanism, and the transmission mechanism is connected to the print head module. The X-direction drive motor can drive the print head module to move along the X direction through the transmission mechanism.

17. The 3D printing device according to claim 16, wherein: The transmission mechanism is a belt transmission mechanism, the print head module has a transmission connection portion and two sliding matching holes, the two sliding matching holes are respectively slidably matched with the two X-direction transmission shafts, and the transmission connection portion is connected to the belt transmission mechanism; The projections of the transmission connection portion and the two sliding fitting holes in a plane perpendicular to the X-direction are distributed in a triangular shape.

18. The 3D printing device according to claim 15, characterized in that: The X-axis assembly further includes at least two heat dissipation assemblies respectively arranged at both ends of the X-axis transmission shaft, and the heat dissipation assemblies are configured to blow air toward the print head module.

19. The 3D printing device according to claim 17, wherein: The X-axis assembly further includes two connecting brackets; the two connecting brackets are respectively located at both ends of the X-direction transmission shaft, and the ends of the X-direction transmission shaft are fixed to the connecting brackets at the corresponding ends; At least two of the heat dissipation components are respectively connected to the two connecting brackets.

20. The 3D printing device according to claim 17, wherein: The heat dissipation assembly includes a heat dissipation fan and an air guide; one end of the air guide is connected to the heat dissipation fan, and the other end faces the print head module.

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