X-axis assembly and 3D printing equipment

Abstract

The utility model relates to the field of 3D printing, aims to solve the problem that an X-direction transmission shaft supported by a known printing head module is likely to be subjected to torsional deformation, and provides an X-axis assembly and 3D printing equipment. The X-axis assembly comprises a printing head module, an X-direction driving assembly and at least two X-direction transmission shafts. The printing head module is configured to output consumables so as to print a printed piece on the printing platform assembly. The X-direction driving assembly is in transmission connection with the printing head module so as to drive the printing head module to move. Wherein the two X-direction transmission shafts extend in the X direction, and the printing head module is movably installed on the two X-direction transmission shafts in the X direction. Wherein the two X-direction transmission shafts are spaced in the Z direction and staggered in the Y direction, and every two of the X direction, the Y direction and the Z direction are perpendicular. The X-direction transmission shaft has the beneficial effects that the X-direction transmission shaft can better adapt to a printing head module with the weight not evenly distributed in the Y direction, and the X-direction transmission shaft is not prone to deformation.

Description

Technical Field

[0001] This application relates to the field of 3D printing, and more particularly, to an X-axis component and a 3D printing device. Background Art

[0002] For 3D printing devices, such as some 3D printing devices based on FDM (Fused Deposition Modelling) technology, a consumable is melted and extruded through a print head module, and a printed part is obtained by layer-by-layer printing.

[0003] In the known art, the print head module is slidably supported on two X-axis drive shafts spaced apart in the vertical direction (Z direction). This may cause the print head module to exert a large torque on the X-axis drive shafts due to uneven weight distribution, which may cause deformation of the X-axis drive shafts. Summary of the Utility Model

[0004] This application provides an X-axis component and a 3D printing device to solve the problem that the known print head module may easily cause torsional deformation of the supported X-axis drive shafts.

[0005] The embodiments of this application are implemented as follows:

[0006] In a first aspect, this application provides an X-axis component, which includes:

[0007] A print head module configured to output a consumable to print a printed part on a print platform component;

[0008] An X-axis drive component drivingly connected to the print head module to drive the print head module to move;

[0009] And,

[0010] At least two X-axis drive shafts, where two X-axis drive shafts extend along the X direction respectively, and the print head module is movably mounted along the X direction on the two X-axis drive shafts;

[0011] Wherein, the two X-axis drive shafts are spaced apart in the Z direction and offset in the Y direction, and the X direction, Y direction, and Z direction are perpendicular to each other in pairs.

[0012] In a possible implementation:

[0013] The X-axis drive component includes an X-axis drive motor and a transmission mechanism. The X-axis drive motor is drivingly connected to the transmission mechanism, and the transmission mechanism is connected to the print head module. The X-axis drive motor can drive the print head module to displace along the X direction through the transmission mechanism;

[0014] The print head module has a transmission connection part and two sliding fit holes. The two sliding fit holes are respectively slidably fitted with the two X-axis drive shafts, and the transmission connection part is connected to the transmission mechanism;

[0015] Among them, the projections of the transmission connection part and the two sliding fit holes in a plane perpendicular to the X direction are triangularly distributed.

[0016] In a possible implementation manner:

[0017] The X-direction driving assembly includes an X-direction driving motor and a transmission mechanism. The X-direction driving motor is drivingly connected to the transmission mechanism, and the transmission mechanism is connected to the print head module. The X-direction driving motor can drive the print head module to displace along the X direction through the transmission mechanism.

[0018] In a possible implementation manner:

[0019] The transmission mechanism is a belt transmission mechanism. The print head module has a transmission connection part and two sliding fit holes. The two sliding fit holes are respectively slidably fitted with two X-direction transmission shafts, and the transmission connection part is connected to the belt transmission mechanism;

[0020] Among them, the projections of the transmission connection part and the two sliding fit holes in a plane perpendicular to the X direction are triangularly distributed.

[0021] In a possible implementation manner:

[0022] The X-axis assembly further includes at least two heat dissipation components respectively arranged at two ends of the X-direction transmission shaft, and the heat dissipation components are configured to blow air towards the print head module.

[0023] In a possible implementation manner:

[0024] The X-axis assembly further includes two connection brackets; the two connection brackets are respectively located at two ends of the X-direction transmission shaft, and the end of the X-direction transmission shaft is fixed to the corresponding connection bracket;

[0025] At least two heat dissipation components are respectively connected to the two connection brackets.

[0026] In a possible implementation manner:

[0027] The heat dissipation component includes a heat dissipation fan and a wind guiding member; one end of the wind guiding member communicates with the heat dissipation fan, and the other end faces the print head module.

[0028] In a second aspect, the present application provides a 3D printing device, which includes:

[0029] The aforementioned X-axis assembly;

[0030] A base assembly; the base assembly includes a base component and a gantry. The gantry includes a cross beam and two columns. The columns are connected to the base component and extend along the Z direction, and the two columns are spaced apart from each other in the X direction. The cross beam is connected between the ends of the two columns away from the base component; the two X-direction transmission shafts are respectively located on both sides of the columns in the Y direction;

[0031] The printing platform assembly is movably arranged along the Y direction on the base assembly and is used for carrying a printed part.

[0032] In a possible implementation:

[0033] The X-axis assembly further includes two connecting brackets;

[0034] The two connecting brackets are respectively located at both ends of the X-direction transmission shaft, and the end parts of the two X-direction transmission shafts are respectively fixed to the connecting brackets at the corresponding ends;

[0035] The connecting brackets are slidably matched with the gantry along the Z direction and can be driven to displace along the Z direction. The two X-direction transmission shafts are respectively located on both sides of the column in the Y direction.

[0036] In a possible implementation:

[0037] The 3D printing device further includes two Z-direction optical axes and two Z-direction driving assemblies. The two Z-direction optical axes are respectively fixed to the gantry, and the two Z-direction optical axes are respectively parallel and spaced apart from the two columns;

[0038] The Z-direction driving assembly includes a Z-axis driving motor and a lead screw slider mechanism. The lead screw of the lead screw slider mechanism extends along the Z direction and is rotatably connected to the gantry. The Z-axis driving motor is drivingly connected to the lead screw for driving the lead screw to rotate; the slider of the lead screw slider mechanism is in threaded fit with the lead screw;

[0039] The connecting bracket is connected to the slider.

[0040] In a third aspect, the present application further provides a 3D printing device, which includes:

[0041] A frame assembly;

[0042] The aforementioned X-axis assembly; the X-axis assembly is movably connected to the frame assembly along the Y direction;

[0043] The printing platform assembly is movably arranged along the Z direction on the frame assembly. The printing platform assembly is located below the printing head module in the Z direction and is used for carrying the printed part printed by the printing head module.

[0044] In the 3D printing device of the present application, the two X-direction transmission shafts of the X-axis assembly are stepped and spaced apart along the Z direction and also spaced apart along the Y direction. Compared with the known method in which the two X-direction transmission shafts coincide in the Y direction, it can better adapt to the printing head module with uneven weight distribution in the Y direction, reduce the tendency of the printing head module to deflect to one side of the X-direction transmission axis due to uneven weight distribution in the Y direction, and also reduce the torsional deformation of the X-direction transmission shaft caused by the action of the printing head module with uneven weight distribution in the Y direction. Description of the Drawings

[0045] To more clearly illustrate the technical solutions of the embodiments of the present application, the accompanying drawings in the embodiments will be briefly introduced below. It should be understood that the following accompanying drawings only show some embodiments of the present application, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, other related accompanying drawings can also be obtained based on these drawings without creative efforts.

[0046] Figure 1 Stereoscopic view of a 3D printing device according to an embodiment of the present application;

[0047] Figure 2 For Figure 1 Cross-sectional view of the 3D printing device;

[0048] Figure 3 For Figure 2 Enlarged view of part A in

[0049] Figure 4 For Figure 1 Partial enlarged view of

[0050] Figure 5 Another perspective view of the figure;

[0051] Figure 6 For Figure 1 Top view of a partial structure of

[0052] Figure 7 For Figure 6 Partial enlarged view of

[0053] Figure 8 Stereoscopic view of the connecting bracket in the embodiment of the present application;

[0054] Figure 9 Front view of a 3D printing device according to another embodiment of the present application;

[0055] Figure 10 For Figure 9 Top view of the 3D printing device.

[0056] Main element symbol description:

[0057] 3D printing device 100, 100a

[0058] Base assembly 10

[0059] Printing platform assembly 11

[0060] X-axis assembly 12

[0061] Material rack 13

[0062] Base assembly 14

[0063] Gantry 15

[0064] Material roll 16

[0065] Print head module 17

[0066] X-direction drive assembly 18 X-direction drive shaft 19 X-direction drive motor 20 Transmission mechanism 21 Transmission connection part 22 Cross beam 23 Column 24 Connection bracket 25 Z-axis drive motor 26 Lead screw slider mechanism 27 Lead screw 28 Slider 29 Substrate 30 Mounting convex ring 31 Z-direction seat sleeve 32 Horizontal plate 33 Drive pulley 34 Drive belt 36 Heat dissipation component 37 Z-direction optical axis 38 Z-direction drive assembly 39 Frame assembly 40 First rectangular frame 41 Second rectangular frame 42 Frame column 43 Heat dissipation fan 44 Air guide part 45 Sliding fit hole K1

[0067] Through hole K2 Specific implementation mode

[0068] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments.

[0069] It should be noted that when an element is referred to as "fixed to" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. When an element is considered to be "disposed on" another element, it can be directly disposed on the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.

[0070] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terms used 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" used herein includes any and all combinations of one or more of the related listed items.

[0071] Some embodiments of this application will be described in detail. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0072] Embodiment 1

[0073] Referring to Figure 1 and Figure 2 , this embodiment provides a 3D printing device 100, which includes a base assembly 10, a printing platform assembly 11, an X-axis assembly 12, and a material rack 13.

[0074] The base assembly 10 includes a base component 14 and a gantry 15. The gantry 15 is connected to the base component 14 and stands vertically along the Z direction.

[0075] The printing platform assembly 11 is movably arranged along the Y direction on the base component 14 for carrying the printed part.

[0076] The material rack 13 is installed on the base assembly 10 for carrying the material roll 16 wound with consumables.

[0077] 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, the Y direction, and the Z direction are perpendicular to each other in pairs. During use, generally, the Z direction is along the vertical direction, and the X direction and the Y direction are two mutually perpendicular horizontal directions.

[0078] Among them, the X-axis assembly 12 includes a print head module 17, an X-direction drive assembly 18, and at least two X-direction transmission shafts 19. The print head module 17 is used to print a printed part on the printing platform assembly 11; the two X-direction transmission shafts 19 extend along the X direction respectively. The print head module 17 is movably installed on the two X-direction transmission shafts 19 along the X direction, and the X-direction drive assembly 18 is drivingly connected to the print head module 17 for driving the print head module 17 to move along the X direction.

[0079] With reference to Figure 3 , the two X-direction transmission shafts 19 are spaced apart along the Z direction and staggered along the Y direction, that is, as Figure 3 shown, the connection line of the two X-direction transmission shafts 19 is inclined to the Z direction and the Y direction respectively.

[0080] In the 3D printing device 100 of this embodiment, the two X-axis drive shafts 19 of the X-axis assembly 12 are stepped at intervals in the Z direction and at intervals in the Y direction. The print head module 17 has two support points spaced apart in the Y direction. Compared with the known method in which the two X-axis drive shafts 19 coincide in the Y direction, 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 drive shaft 19 due to uneven weight distribution in the Y direction, and also reduce the torsional deformation of the X-axis drive shaft 19 caused by the action of the print head module 17 with uneven weight distribution in the Y direction.

[0081] In this embodiment, the X-axis drive assembly includes an X-axis drive motor 20 (seen in Figure 6 or Figure 7 ), and a transmission mechanism 21. The X-axis drive motor 20 is drivingly connected to the transmission mechanism 21, and the transmission mechanism 21 is connected to the print head module 17. The X-axis drive motor 20 can drive the print head module 17 to displace in the X direction through the transmission mechanism 21. The print head module 17 has a transmission connection part 22 and two sliding fit holes K1. The two sliding fit holes K1 are respectively slidably fitted with the two X-axis drive shafts 19, and the transmission connection part 22 is connected to the transmission mechanism 21. Among them, see Figure 3 . The projections of the transmission connection part 22 and the two sliding fit holes K1 in a plane perpendicular to the X direction are distributed in a triangular shape. While the two inclined X-axis drive shafts 19 provide reliable and balanced support for the print head module 17, the arrangement of the transmission mechanism 21 outside the connecting line of the centers of the two optical axes and the driving force applied to the print head module 17 can drive the print head module 17 more smoothly, and the movement of the print head module 17 driven in the X direction is relatively stable.

[0082] In this embodiment, the gantry 15 includes a cross beam 23 and two columns 24. The columns 24 are connected to the base assembly 14 and extend in the Z direction, and the two columns 24 are spaced apart from each other in the X direction. The cross beam 23 is connected between the ends of the two columns 24 away from the base assembly 14.

[0083] For reference, see Figure 4 or Figure 5 . The two X-axis drive shafts 19 are respectively located on the two sides of the column 24 in the Y direction. In this implementation, the print head module is connected to the two X-axis drive shafts on both sides 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 more balancedly, and the structure is reasonable and reliable.

[0084] For reference, see Figures 6 - 8 . The X-axis assembly 12 further includes two connection brackets 25. The two connection brackets 25 are respectively located at both ends of the X-axis drive shaft 19. The end parts of the two X-axis drive shafts 19 are respectively fixed to the connection brackets 25 at the corresponding ends. The connection brackets 25 are slidably fitted to the gantry 15 in the Z direction and can be driven to displace in the Z direction.

[0085] To realize the drive of the X-axis component 12, the 3D printing device 100 further includes two Z-axis optical axes 38 and two Z-axis drive components 39. The two Z-axis optical axes 38 are respectively fixed to the gantry 15, and the two Z-axis optical axes 38 are respectively disposed near the two columns 24 and are parallel and spaced apart from the adjacent Z-axis optical axes 38. The Z-axis drive component 39 includes a Z-axis drive motor 26 and a lead screw slider mechanism 27. The lead screw 28 of the lead screw slider mechanism 27 extends along the Z-axis and is rotatably connected to the gantry 15. The Z-axis drive motor 26 is drivingly connected to the lead screw 28 for driving the lead screw 28 to rotate; the slider 29 of the lead screw slider mechanism 27 is in threaded engagement with the lead screw 28. The connection bracket 25 is connected to the slider 29. Thus, when it is necessary to drive the X-axis component to displace along the Z-axis, the Z-axis drive motor of the Z-axis drive components 39 on both sides of the gantry 15 can be used to drive the lead screw 28 to rotate. Through the cooperation of the lead screw 28 and the slider 29, the slider 29 and the X-axis component 12 are driven to displace along the Z-axis.

[0086] Optionally, in the Y direction, the column 24 and the Z-axis optical axis 38 are located between the two X-axis drive shafts 19, the lead screw 28 is located outside the two X-axis drive shafts 19, the lead screw 28 and the Z-axis optical axis 38 are parallel and spaced apart, and one of the X-axis drive shafts 19 is sandwiched in the middle. In this arrangement form, the gravity distribution of the print head module 17 is reasonable, and the displacement of the X-axis component along the Z-axis driven by the lead screw 28 is more stable.

[0087] In this embodiment, the connection bracket 25 includes a base plate 30. The surface of the base plate 30 facing the X-axis drive shaft 19 is convexly provided with two mounting convex rings 31. The end portions of the two X-axis drive shafts 19 are respectively fitted into the two mounting convex rings 31 and are locked to the base plate 30 by screws. The base plate 30 is connected with a Z-axis seat sleeve 32. The Z-axis seat sleeve 32 is slidably sleeved on the Z-axis optical axis 38. The base plate 30 is vertically connected with a cross plate 33. The slider 29 is connected to the cross plate 33; the cross plate 33 is provided with a through hole K2 penetrating along the Z-axis for allowing the lead screw 28 to pass through. On the one hand, the connection bracket 25 realizes the reliable fixed installation of the X-axis drive shaft 19, on the other hand, realizes the sliding fit with the Z-axis optical axis 38 and is connected with the slider 29 of the lead screw slider mechanism 27. The structure is compact and can reliably bear the force transmitted by the lead screw slider mechanism 27. Optionally, there are two Z-axis seat sleeves 32, and the two Z-axis seat sleeves 32 are respectively located on both Z-axis sides of the cross plate 33. To improve the stability of the cooperation between the print head module 17 and the Z-axis optical axis 38.

[0088] In this embodiment, the transmission mechanism 21 is a belt transmission mechanism, which includes a driving pulley 34, a driven pulley (not shown in the figure), and a transmission belt 36. The X-direction driving motor 20 and the driving pulley 34 are arranged on one of the connecting brackets 25, the driven pulley is arranged on the other connecting bracket 25, and the transmission belt 36 is drivingly connected between the driving pulley 34 and the driven pulley. The transmission connecting portion 22 of the print head module 17 is connected to the transmission belt 36, so that the print head module 17 can be driven by the transmission belt 36 to displace in the X direction.

[0089] In this way, the X-direction driving motor 20 located on one connecting bracket 25 can drive the transmission belt 36 to rotate through the driving pulley 34, and then drive the print head module 17 connected to the transmission belt 36 to move in the X direction.

[0090] In this 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 lead 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, and the print head module 17 is reasonably stressed and moves relatively smoothly.

[0091] In this embodiment, the X-axis assembly 12 further includes two heat dissipation components 37, and the two heat dissipation components 37 are respectively connected to the two connecting brackets 25; the two heat dissipation components 37 respectively face the print head module 17 and are used for dissipating heat from the print head module 17. In this embodiment, the heat dissipation component 37 includes a heat dissipation fan 44 and a wind guiding member 45. One end of the wind guiding member 45 is communicated with the air outlet of the heat dissipation fan 44, and the other end faces the print head module 17. The airflow generated when the heat dissipation fan 44 operates is blown towards the print head module 17 under the guidance of the wind guiding member 45, and heat dissipation of the print head module 17 can be realized.

[0092] Embodiment Two

[0093] Figure 9 and Figure 10 shows a 3D printing device 100a according to another embodiment provided by the present application.

[0094] See Figure 9 and Figure 10 , in this embodiment, the 3D printing device 100a includes a frame assembly 40, a printing platform assembly 11, and an X-axis assembly 12.

[0095] The frame assembly 40 is generally a rectangular parallelepiped frame structure, including a first rectangular frame 41 at the bottom, a second rectangular frame 42 at the top, and four frame columns 43 connecting the first rectangular frame 41 and the second rectangular frame 42. Among them, the frame columns 43 extend in the Z direction, and one side of the first rectangular frame 41 and the second rectangular frame 42 extends in the X direction and the other side extends in the Y direction. The X direction, the Y direction, and the Z direction are perpendicular to each other in pairs.

[0096] Similar to the first embodiment, the X-axis assembly 12 in the second embodiment also includes a print head module 17, an X-axis drive assembly 18, and at least two X-axis drive shafts 19. The print head module 17 is configured to output consumables to print a printed part on the printing platform assembly 11. The X-axis drive assembly 18 is drivingly connected to the print head module 17 to drive the print head module 17 to move. Two of the X-axis drive shafts 19 extend along the X-axis respectively, and the print head module 17 is movably mounted on the two X-axis drive shafts 19 along the X-axis. Among them, the two X-axis drive shafts 19 are spaced apart along the Z-axis and staggered along the Y-axis.

[0097] The X-axis assembly 12 is movably connected to the frame assembly 40 along the Y-axis and can be driven to displace integrally along the Y-axis. In this embodiment, the X-axis assembly 12 can be disposed at the second rectangular frame 42 at the top. The printing platform assembly 11 is movably disposed on the frame assembly 40 along the Z-axis. The printing platform assembly 11 is located below the print head module 17 along the Z-axis and is used to carry the printed part printed by the print head module 17.

[0098] In this way, the print head module 17 can move along the X-axis on the X-axis drive shaft 19, or move along the Y-axis as the print head module 17 is displaced integrally along the Y-axis, that is, the print head module 17 can be displaced along the X-axis and / or the Y-axis. Coupled with the displacement of the printing platform assembly 11 along the Z-axis, during the printing process, the print head module 17 and the printing platform assembly 11 can achieve relative displacements along the X-axis, Y-axis, and Z-axis, so that a three-dimensional printed part can be printed.

[0099] Among them, the driving of the Y-axis and Z-axis displacements can be driven by a synchronous belt mechanism, a lead screw nut mechanism, or other linear drive structures, which will not be elaborated here.

[0100] For the 3D printing device 100a in the second embodiment, the principle of its X-axis assembly 12 is the same as that of the first embodiment, and thus it also has the same technical effect: it can better adapt to the print head module 17 with uneven weight distribution in the Y-axis direction, reducing the tendency of the print head module 17 to deflect to one side relative to the X-axis drive shaft 19 due to uneven weight distribution in the Y-axis direction, and also reducing the torsional deformation of the X-axis drive shaft 19 caused by the action of the print head module 17 with uneven Y-axis weight distribution.

[0101] The above embodiments are only used to illustrate the technical solutions of the present application and not to limit them. Although the present application has been described in detail with reference to the above preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present application can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. An X-axis assembly, characterized in that: include: A print head module, the print head module being configured to output consumables to print a print on the printing platform assembly; An X-axis driving component, the X-axis driving component is 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, characterized in that: The X-direction driving assembly includes an X-direction driving motor and a transmission mechanism, the X-direction driving motor is connected to the transmission mechanism, the transmission mechanism is connected to the print head module, and the X-direction driving 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 part and two sliding matching holes, the two sliding matching holes can respectively slidably match the two X-direction transmission shafts, and the transmission connection part 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, characterized in that: The X-axis assembly further includes at least two heat dissipation assemblies respectively disposed at two 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 further includes two connecting brackets; the two connecting brackets are respectively located at two 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; 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: The X-axis assembly according to any one of claims 1 to 6; 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 work.

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 two ends of the X-axis transmission shaft, and the ends of the two X-axis 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 optical axes and two Z-direction drive assemblies, wherein the two Z-direction optical axes are respectively fixed to the gantry, and the two Z-direction optical axes are respectively parallel to and spaced from the two columns; 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 matched with the screw; The connecting bracket is connected to the sliding block.

10. A 3D printing device, characterized in that: include: Frame components; The X-axis assembly according to any one of claims 1 to 6; the X-axis assembly is movably connected to the frame assembly along the Y direction; The printing platform component is movably arranged on the frame component along the Z direction. The printing platform component is located below the print head module in the Z direction and is used to carry the prints printed by the print head module.

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