3D printing equipment

Abstract

The invention relates to 3D printing equipment. The 3D printing equipment comprises a supporting mechanism, a printing mechanism, a driving mechanism and a connecting mechanism. Wherein the printing mechanism is arranged on the supporting mechanism, and the printing mechanism comprises a printing assembly and an ink jet assembly. The driving mechanism is arranged on the supporting mechanism, is in driving connection with the printing assembly and is used for driving the printing assembly to print, and the connecting mechanism is arranged between the printing assembly and the ink jet assembly and is used for connecting the printing assembly and the ink jet assembly. Wherein before the ink-jet assembly performs printing, the driving mechanism drives the printing assembly to move towards the ink-jet assembly, so that the printing assembly is connected with the ink-jet assembly through the connecting mechanism. The connection between the printing assembly and the ink jet assembly is realized by arranging the connecting mechanism, and at the moment, a driving mechanism does not need to be additionally arranged to drive the ink jet assembly to move, so that the number of structural parts can be reduced, and the production cost is reduced.

Description

Technical Field

[0001] This application belongs to the technical field of 3D printing, and particularly relates to a 3D printing device. Background Art

[0002] In traditional 3D printing technology, if a colored model needs to be printed, multiple nozzles often need to be set up to achieve coloring the printing layer. And during the process of coloring the printing layer, a driving member often needs to be set corresponding to the nozzle to drive the nozzle to color the printing layer. At this time, the number of structural members is large and the volume is large. Summary of the Invention

[0003] This application provides a 3D printing device to solve the technical problems of a large number of structural members and large volume required when printing a colored model.

[0004] To solve the above technical problems, a technical solution adopted by this application is: a 3D printing device, the 3D printing device includes: a support mechanism; a printing mechanism disposed on the support mechanism, the printing mechanism includes a printing component and an inkjet component; a driving mechanism disposed on the support mechanism and drivingly connected to the printing component for driving the printing component to print; and a connecting mechanism disposed between the printing component and the inkjet component for connecting the printing layer and the inkjet component; wherein, before the inkjet component prints, the driving mechanism drives the printing component to move towards the inkjet component so that the printing component is connected to the inkjet component through the connecting mechanism.

[0005] According to an embodiment of this application, the connecting mechanism includes: a first magnetic member disposed on a side of the inkjet component facing the printing component; a second magnetic member disposed on a side of the printing mechanism facing the inkjet component; when the printing layer is printed, the driving mechanism drives the printing component to move towards the inkjet component until the first magnetic member and the second magnetic member are adsorbed and connected.

[0006] According to an embodiment of this application, the first magnetic member includes an electromagnet, and the second magnetic member includes a steel plate. When the printing layer is printed, the electromagnet is energized to magnetically attract the steel plate. When the inkjet component finishes inkjetting on the printing layer, the electromagnet is powered off to separate the inkjet component from the steel plate.

[0007] According to one embodiment of the present application, the supporting mechanism includes: a crossbeam extending along a first direction, the printing component and the inkjet component are arranged on the crossbeam, and can move relative to the crossbeam along the first direction; a longitudinal beam group, including a first longitudinal beam and a second longitudinal beam arranged at intervals along the first direction, the first longitudinal beam and the second longitudinal beam both extend along a second direction, the first direction and the second direction are arranged perpendicularly, the two ends of the crossbeam are respectively movably connected to the first longitudinal beam and the second longitudinal beam, and the crossbeam can slide back and forth along the second direction.

[0008] According to one embodiment of the present application, the inkjet assembly includes: an inkjet head, which is arranged on the crossbeam; a moisturizing assembly, which is arranged at one end of the crossbeam close to the first longitudinal beam and is arranged on the same side of the crossbeam as the inkjet head, and the moisturizing assembly abuts against the inkjet head when the inkjet head is not working.

[0009] According to one embodiment of the present application, the 3D printing device also includes: a printing table, which is arranged below the printing component, and the printing table can reciprocate along the first direction and a third direction, wherein the third direction is arranged perpendicular to the first direction and the second direction.

[0010] According to one embodiment of the present application, the 3D printing device further includes: a first slider and a second slider, and both ends of the crossbeam are slidably connected to the first longitudinal beam and the second longitudinal beam through the first slider and the second slider, respectively.

[0011] According to one embodiment of the present application, the driving mechanism includes: a first driving member, which is arranged on the side of the beam away from the printing mechanism along the second direction and is spaced apart from the beam; and a first transmission assembly, which is respectively transmission-connected to the first driving member, the first slider and the second slider.

[0012] According to one embodiment of the present application, a first support seat and a second support seat are respectively provided at both ends of the first longitudinal beam in the second direction, a third support seat and a fourth support seat are respectively provided at both ends of the second longitudinal beam in the second direction, a first notch is formed towards the first support seat, a second notch is formed towards the second support seat, a third notch is formed towards the third support seat, and a fourth notch is formed towards the fourth support seat, and the driving mechanism also includes: a first transmission wheel group including a first transmission wheel arranged at the first notch and a second transmission wheel arranged at the second notch; a second transmission wheel group including a third transmission wheel arranged at the third notch and a fourth transmission wheel arranged at the fourth notch; a first conveyor belt, which is sequentially wound around the first transmission wheel, the second transmission wheel, the third transmission wheel and the fourth transmission wheel; a first motor, which is drivingly connected to the first conveyor belt to drive the first conveyor belt to move.

[0013] According to an embodiment of the present application, a first bent buckle is provided at one end of the first slider facing the first conveyor belt, a second bent buckle is provided at one end of the second slider facing the first conveyor belt, and a part of the first conveyor belt is located within the first bent buckle and the second bent buckle.

[0014] According to an embodiment of the present application, the cross beam includes a first surface and a second surface arranged opposite to each other along the second direction. The printing assembly and the inkjet assembly are arranged on the first surface. The driving mechanism further includes: a second driving member arranged on the second surface of the cross beam; a second transmission assembly arranged on the first surface of the cross beam, the printing assembly is arranged on the second transmission assembly, and the second transmission assembly is used to drive the printing assembly to move along the first direction. According to an embodiment of the present application, the second transmission assembly includes: a third transmission wheel group arranged on the first surface of the cross beam, the third transmission wheel group includes two fifth transmission wheels arranged at intervals along the first direction; a second conveyor belt respectively wound around the two fifth transmission wheels, the second conveyor belt is drivingly connected to the second driving member to drive the second conveyor belt to move in the first direction; a second motor is drivingly connected to the second conveyor belt to drive the second conveyor belt to move along the first direction.

[0015] According to an embodiment of the present application, the 3D printing device further includes: a guide rail arranged on the first surface of the cross beam, the guide rail extends along the first direction and is arranged at an interval from the second transmission assembly in the third direction, and the guide rail is used to guide the movement of the printing mechanism along the first direction; wherein, the third direction is perpendicular to the first direction and the second direction.

[0016] The beneficial effects of the present application are as follows: The 3D printing device of the present application includes a support mechanism, a printing mechanism, a driving mechanism, and a connecting mechanism; the printing mechanism is arranged on the support mechanism, and the printing mechanism includes a printing component and an inkjet component; the driving mechanism is arranged on the support mechanism and is drivingly connected to the printing component for driving the printing component to print; the connecting mechanism is arranged between the printing component and the inkjet component for connecting the printing component and the inkjet component. Among them, before the inkjet component prints, the driving mechanism drives the printing component to move towards the inkjet component so that the printing component is connected to the inkjet component through the connecting mechanism. The present application can realize the printing of the printing layer through the printing mechanism, and at the same time can also realize the inkjet of the printing layer through the inkjet component, so that color printing of the printing layer can be realized; further, before the inkjet component prints, the driving mechanism drives the printing component to move towards the side close to the inkjet component so that the printing component is connected to the inkjet component through the connecting mechanism. At this time, the printing component drives the inkjet component to move through the connecting mechanism to perform moving inkjet on the printing layer. Therefore, the connecting mechanism is provided to realize the connection between the printing component and the inkjet component. At this time, there is no need to additionally set a driving mechanism to drive the movement of the inkjet component, thereby reducing the number of structural parts and reducing the production cost. In addition, due to the advantages of being small, light and portable of the connecting mechanism, the volume of the 3D printing device can also be reduced, and at the same time, the 3D printing device is made lighter. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to these drawings, where:

[0018] Figure 1 is a top view structural schematic diagram of an embodiment of the 3D printing device of the present application;

[0019] Figure 2 is a three-dimensional structural schematic diagram of an embodiment of the 3D printing device of the present application;

[0020] Figure 3 is Figure 2 an enlarged structural schematic diagram of the partial structure of A in

[0021] Figure 4 is a three-dimensional structural schematic diagram of an embodiment of the 3D printing device of the present application;

[0022] Figure 5 is another three-dimensional structural schematic diagram of an embodiment of the 3D printing device of the present application;

[0023] Figure 6 isFigure 1 Schematic enlarged view of the local structure of B in the [application]. Detailed implementation manners

[0024] To make the above objects, features, and advantages of the present application more obvious and understandable, the following will describe the detailed implementation manners of the present application in conjunction with the accompanying drawings. It can be understood that the specific embodiments described herein are only used to explain the present application, rather than limiting the present application. Additionally, it should be noted that for the sake of description, only parts related to the present application rather than all structures are shown in the drawings. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present application.

[0025] Referring to "embodiments" herein means that the specific features, structures, or characteristics described in connection with the embodiments may be included in at least one embodiment of the present application. The phrase appears in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0026] In the description of the present application, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more, unless otherwise specifically defined.

[0027] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "coupled" 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, an electrical connection, or a connection that can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0028] In traditional 3D printing technology, each material can often only print one color, which limits the printing of colored three-dimensional models. At the same time, traditional 3D printing also requires an additional separate coloring process after printing, which often increases costs and time. If a colored model needs to be printed, the model can be colored by setting up a nozzle, and an additional driving mechanism needs to be set up to drive the coloring process of the nozzle. At this time, the number of structural components increases. At the same time, the overall volume of the 3D printing device will also increase accordingly.

[0029] Please refer to Figure 1 , Figure 1 which is a front structural schematic diagram of an embodiment of the 3D printing device of the present application. An embodiment of the present application provides a 3D printing device 10. Among them, the 3D printing device 10 includes a support mechanism 11, a printing mechanism 12, a driving mechanism 13, and a connecting mechanism 14. The printing mechanism 12 is arranged on the support mechanism 11, and the printing mechanism 12 includes a printing component 121 and an inkjet component 122. The driving mechanism 13 is arranged on the support mechanism 11 and is drivingly connected to the printing component 121. The driving mechanism 13 is used to drive the printing component 121 to print. The connecting mechanism 14 is arranged between the printing component 121 and the inkjet component 122 and is used to connect the printing component 121 and the inkjet component 122. Among them, before the inkjet component 122 prints, the driving mechanism 13 drives the printing component 121 to move towards the inkjet component 122 so that the printing component 121 is connected to the inkjet component 122 through the connecting mechanism 14.

[0030] Among them, the printing component 121 drives the inkjet component 122 to move relative to the printing layer so that the inkjet component 122 moves relative to the printing layer during the inkjet process, thereby realizing that the inkjet component 122 performs moving inkjet on the printing layer. From the above mechanism, it can be seen that the support mechanism 11 can play a certain supporting role for the printing mechanism 12 and the driving mechanism 13 to improve the overall structural stability of the 3D printing device 10. The printing mechanism 12 includes a printing component 121 and an inkjet component 122. This 3D printing device 10 can not only print the printing layer but also spray inks of different colors on the surface of the printing layer, thereby realizing color printing to broaden the application field of the 3D printing device 10 and improve the competitiveness of the 3D printing device 10. At the same time, compared with the prior art in which ink is sprayed to form, in the present application, the printing component 121 is first used to print the printing layer, and then the inkjet component 122 sprays inks of different colors on the printing layer, which can effectively reduce the use cost of the ink, thereby reducing the equipment cost of the 3D printing device 10. And, adopting the method of inkjet on the printing layer can also improve the printing accuracy of the printing layer. Therefore, the 3D printing device 10 of the present application can improve the printing accuracy while saving the equipment cost, thereby effectively improving the competitiveness of the 3D printing device 10.

[0031] Furthermore, the provision of the driving mechanism 13 can drive the printing component 121 to perform printing work, improving the automation level and printing accuracy of the 3D printing device 10. The provision of the connecting mechanism 14 enables the printing component 121 to be connected to the inkjet component 122 through the connecting mechanism 14 to drive the inkjet component 122 to move. Compared with the existing solution where driving mechanisms are respectively provided to drive the printing component 121 and the driving mechanism 13, in this solution, a set of driving mechanisms 13 is used to simultaneously drive the printing component 121 and the driving mechanism 13, reducing the number of driving mechanisms 13, thereby reducing the number of structural parts and the volume of the 3D printing device 10. Specifically, during the printing process of the 3D printing device 10, the driving mechanism 13 drives the printing component 121 to print a printing layer. After the printing component 121 finishes printing the printing layer, the driving mechanism 13 drives the printing component 121 to move towards the side close to the inkjet component 122, so that the printing component 121 and the inkjet component 122 are connected through the connecting mechanism 14. At this time, the printing component 121 can drive the inkjet component 122 to move through the connecting mechanism 14 to perform moving inkjet on the printing layer. The provision of the connecting mechanism 14 eliminates the need to separately provide a driving mechanism 13 to drive the movement of the inkjet component 122, thus reducing the number of structural parts and production costs. In addition, since the volume and weight of the connecting mechanism 14 are smaller and lighter compared to a set of driving parts, the 3D printing device 10 not only has a reduced volume but is also more lightweight overall.

[0032] Moreover, by providing the connecting mechanism 14 to connect the printing component 121 and the inkjet component 122, the stability of the printing component 121 driving the inkjet component 122 to move can be improved, thereby enhancing the stability of the inkjet component 122 during the inkjet process and also enabling the coloring of the printing layer to be more uniform, improving the printing quality.

[0033] 3D printing is a manufacturing technology that creates three-dimensional objects by layer-by-layer stacking of materials. After the printing component 121 and the inkjet component 122 complete the printer inkjet of the current printing layer, the printing component 121 and the inkjet component 122 are separated, and the driving mechanism 13 continues to drive the printing component 121 to print the next printing layer and drive the inkjet component 122 to move through the printing component 121 during the inkjet of the next printing layer, and so on until the three-dimensional object is printed.

[0034] Optionally, after the printing component 121 finishes printing the printing layer, the printing component 121 can be connected to the inkjet component 122 by manual driving, or after the printing component 121 finishes printing the printing layer, the driving mechanism 13 can also drive the printing component 121 to move towards the side close to the inkjet component 122 to connect the printing component 121 and the inkjet component 122, and there is no limitation here.

[0035] It should be noted that the connecting mechanism 14 is disposed between the printing assembly 121 and the inkjet mechanism 122. Specifically, the connecting mechanism 14 can be disposed on the side of the printing assembly 121 close to the inkjet assembly 122, or the connecting mechanism 14 can be disposed on the side of the inkjet assembly 122 close to the printing assembly 121, or, the connecting mechanism 14 can be partially disposed on the side of the printing assembly 121 close to the inkjet assembly 122 and the other part disposed on the side of the inkjet assembly 122 close to the printing assembly 121, and there is no limitation here. Please refer to Figures 1 to 3 , Figure 2 is a schematic perspective view of an embodiment of the 3D printing device of the present application; Figure 3 is Figure 2 an enlarged schematic view of the partial structure of A in . In some embodiments, the connecting mechanism 14 includes a first magnetic member 141 and a second magnetic member 142. Among them, the first magnetic member 141 is disposed on the side of the inkjet assembly 122 facing the printing assembly 121. The second magnetic member 142 is disposed on the side of the printing mechanism 12 facing the inkjet assembly 122. After the printing layer is printed, the driving mechanism 13 drives the printing assembly 121 to move towards the inkjet assembly 122 until the first magnetic member 141 is adsorbed and connected to the second magnetic member 142.

[0036] By the mutual adsorption of the first magnetic member 141 and the second magnetic member 142, the connection between the printing assembly 121 and the inkjet assembly 122 can be realized, and the magnetic adsorption method is adopted to realize the connection between the two, which can not only simplify the connection structure, but also improve the connection strength, so as to improve the situation that during the process of the printing assembly 121 driving the inkjet assembly 122 to ink the printing layer, the inkjet assembly 122 and the printing assembly 121 are separated, thus affecting the inkjet of the inkjet assembly 122 and causing uneven coloring of the printing layer at the same time.

[0037] In some embodiments, the first magnetic member 141 can be a permanent magnet, and the second magnetic member 142 can be a permanent magnet that attracts and combines with the first magnetic member 141 or a magnetic conductor made of ferromagnetic materials such as iron, cobalt, nickel, etc.; or the second magnetic member 142 is a permanent magnet, and the first magnetic member 141 can be a permanent magnet that attracts and combines with the second magnetic member 142 or a magnetic conductor made of ferromagnetic materials.

[0038] Optionally, the connecting mechanism 14 can adopt the first magnetic member 141 and the second magnetic member 142 for adsorption connection, and the connecting mechanism 14 can also adopt a connecting mechanism such as a hook to realize towing connection, which will not be elaborated here one by one.

[0039] In some embodiments, only the first magnetic member 141 or only the second magnetic member 142 may be provided. When only the first magnetic member 141 is provided, the printing assembly 121 may be provided with a component made of steel or iron that can be adsorbed by the first magnetic member 141, so that the printing assembly 121 can directly adsorb to the first magnetic member 141. When only the second magnetic member 142 is provided, the inkjet assembly 122 may be provided with a component made of steel or iron that can be adsorbed by the first magnetic member 141, so that the inkjet assembly 122 can adsorb to the second magnetic member 142.

[0040] Optionally, the first magnetic member 141 includes an electromagnet, and the second magnetic member 142 includes a steel plate. Specifically, after the printing layer is printed, the electromagnet is energized, and the electromagnet can generate a magnetic field to magnetically adsorb the steel plate on the printing assembly 121. After the inkjet assembly 122 finishes inkjetting on the printing layer, the electromagnet is powered off, the magnetic field disappears, and the electromagnet separates from the steel plate, so that the inkjet assembly 122 separates from the printing assembly 121.

[0041] The setting of the electromagnet only needs to energize or power off the electromagnet to better control the adsorption and separation between the inkjet assembly 122 and the printing assembly 121. The entire control process is more convenient and fast. Moreover, after the inkjet assembly 122 finishes inkjetting on the printing layer, there is no need for the user to manually separate the inkjet assembly 122 from the printing assembly 121, which can reduce labor costs and improve the automation level. And the second magnetic member 142 uses a steel plate to adsorb to the electromagnet, which can also well reduce the material cost at this time.

[0042] In some embodiments, the support mechanism 11 includes a cross beam 111 and a set of longitudinal beams 112. Among them, the cross beam 111 extends along the first direction X. The printing assembly 121 and the inkjet assembly 122 are arranged on the cross beam 111, and the printing assembly 121 and the inkjet assembly 122 can move relative to the cross beam 111 along the first direction X. The set of longitudinal beams 112 includes a first longitudinal beam 1121 and a second longitudinal beam 1122 arranged at intervals along the first direction X. Both the first longitudinal beam 1121 and the second longitudinal beam 1122 extend along the second direction Y. The first direction X and the second direction Y are perpendicularly arranged, and both ends of the cross beam 111 are movably connected to the first longitudinal beam 1121 and the second longitudinal beam 1122 respectively, and the cross beam 111 can reciprocally slide along the second direction Y.

[0043] Specifically, the 3D printing device 10 further includes a first slider 16 and a second slider 17. Both ends of the cross beam 111 are respectively slidably connected to the first longitudinal beam 1121 and the second longitudinal beam 1122 through the first slider 16 and the second slider 17.

[0044] When the driving mechanism 13 drives the printing component 121 to print, the printing component 121 moves along the first direction X and the second direction Y respectively, so that the printed layer printed by the printing component 121 can present a three-dimensional form. After the printing component 121 finishes printing the printed layer, the driving mechanism 13 drives the printing component 121 to move towards the side close to the inkjet component 122, so that the printing component 121 is connected to the inkjet component 122 through the connecting mechanism 14. The driving mechanism 13 continues to drive the printing component 121 to drive the inkjet component 122 to move along the first direction X, while the cross beam 111 moves along the second direction Y to drive the inkjet component 122 to move in the second direction Y. At this time, the inkjet component 122 can color the entire printed layer. The inkjet component 122 can move in the first direction X driven by the connecting mechanism 14 and move in the second direction Y driven by the cross beam 111, which can make the coloring of the entire printed layer more uniform, thereby improving the three-dimensional color printing accuracy of the 3D printing device 10.

[0045] Furthermore, the support mechanism 11 realizes an I-shaped structure through the cross beam 111 and the longitudinal beam group 112. The support effect of the entire support mechanism 11 is better, so the overall structural stability of the 3D printing device 10 is better. By setting the first slider 16 and the second slider 17, the sliding connection between the cross beam 111 and the first longitudinal beam 1121 and the second longitudinal beam 1122 can be made more stable and smooth, thereby improving the printing quality and the user experience.

[0046] In an embodiment of the present application, the inkjet component 122 further includes an inkjet head 1221 and a moisturizing component 1222. Among them, the inkjet head 1221 is arranged on the cross beam 111. The moisturizing component 1222 is arranged at one end of the cross beam 111 close to the first longitudinal beam 1121 and is on the same side of the cross beam 111 as the inkjet head 1221. The moisturizing component 1222 abuts against the inkjet head 1221 when the inkjet head 1221 is not working.

[0047] Since air has a certain degree of dryness, the inkjet head 1221 is prone to dryness when exposed to air for a long time, thereby clogging the outlet of the inkjet head 1221, thereby affecting the inkjet head 1221 from spraying ink. Therefore, the setting of the moisturizing component 1222 can play a good moisturizing role for the inkjet head 1221 when the inkjet head is not working, thereby effectively avoiding the situation that the outlet of the inkjet head 1221 is blocked when the inkjet head 1221 is not working, and at this time, the smoothness of the inkjet head 1221 from spraying ink can be improved. In addition, since the moisturizing component 1222 is arranged at one end of the crossbeam 11 close to the first longitudinal beam 121, and is arranged on the same side of the crossbeam 11 as the inkjet head 1221, when the printing component 121 moves to abut against the moisturizing component 1222, the inkjet component 122 is driven to move through the connecting component 14 to print the printing layer. Therefore, the setting of the moisturizing component 1222 can also play a certain positioning role for the position of the printing component 121.

[0048] Specifically, the moisturizing assembly 1222 includes a support seat 1223. The support seat 1223 is an L-shaped support seat 1223, which includes an integrally formed bottom wall 1225 and a side wall 1224. The side wall 1224 is fixed to the crossbeam 111, and an elastic cover 1226 is provided on the bottom wall 1225. When the inkjet head 1221 moves to the support seat 1223, at least the inkjet side of the inkjet head 1221 abuts against the elastic cover 1226. At this time, through the abutment between the elastic cover body 1226 and the inkjet head 1221, the inkjet head 1221 can be well sealed to prevent the inkjet head 1221 from being exposed to the air and drying out, thereby clogging the outlet of the inkjet head 1221 and affecting the inkjet head 1221 from spraying ink. Therefore, the elastic cover body 1226 can abut against the inkjet head 1221 to moisturize the inkjet head 1221, thereby effectively improving the smoothness of the inkjet head 1221 spraying ink.

[0049] Further, when the inkjet head 1221 is in the working state, the inkjet head 1221 will leave the support seat 1223. At this time, there is no object supporting the bottom wall 1225 of the support seat 1223, so that the elastic cover 1226 will recover its deformation, and the elastic cover 1226 will protrude from the surface of the bottom wall 1225 of the support seat 1223 without the action of pressure. In view of this, in one embodiment of the present application, a lever 1227 and a first elastic member 1229 are further provided on the support seat 1223, wherein the lever 1227 is provided on the bottom wall 1225 and is located on the side of the inkjet head 1221 away from the printing assembly 121. One end of the lever 1227 is connected to the elastic cover 1226, and the elastic cover 1226 also abuts against the bottom wall 1225. The other end of the lever 1227 abuts against the bottom wall 1225 through the first elastic member 1229. The elastic force of the first elastic member 1229 is greater than the elastic force of the elastic cover 1226 .

[0050] Optionally, with the direction opposite to the ejection direction of the inkjet head 1221 as upward and the ejection direction of the inkjet head 1221 as downward, when the inkjet head 1221 is working, the support seat 1223 is not subjected to force, because the elastic force of the first elastic member 1229 is greater than the elastic force of the elastic cover body 1226, therefore, under the action of the first elastic member 1229, the elastic cover body 1226 is compressed, and the position of the other end of the lever 1227 is higher than the position of the elastic cover body 1226, and the three remain stationary when the support seat 1223 is not subjected to force. When the inkjet head 1221 finishes its work and returns to the support seat 1223 for sealing and moisturizing, the inkjet head 1221 contacts the bottom wall 1225 of the support seat 1223 to apply a downward pressure to the other end of the lever 1227. At this time, the other end of the lever 1227 moves downward, thereby compressing the first elastic member 1229. The elastic cover body 1226 is lifted up by one end of the lever 1227, so that the elastic cover body 1226 restores its deformation to abut against the inkjet head 1221, thereby achieving sealing. Therefore, a lever 1227 and a first elastic member 1229 are provided, and the elastic force of the first elastic member 1229 is greater than the elastic force of the elastic cover 1226. When the inkjet head 1221 is in a working state, the elastic cover 1226 can be compressed, so that the elastic cover 1226 will not protrude from the surface of the bottom wall 1225, and the inkjet head 1221 can be conveniently moved to the support seat 1223. When the inkjet head 1221 returns to the bottom wall 1225, the elastic cover 1226 is brought into contact with the inkjet head 1221 to achieve sealing. There is no need for the user to manually assist the inkjet head 1221 to abut against the elastic cover 1226, thereby improving the user's operating experience.

[0051] Optionally, the elastic cover 1226 includes a cover and a second elastic member respectively abutting against the cover and the bottom wall 1225 .

[0052] In an embodiment of the present application, in order to support the printed model, the 3D printing device 10 further includes a printing table 15. The printing table 15 is disposed below the printing assembly 121, and the printing table 15 can reciprocate in the first direction X and the third direction Z respectively. The third direction Z is perpendicular to the first direction X and the second direction Y. By providing the printing table 15, the printed model can be well supported. Since the printed model usually has a certain volume, by reciprocating the printing table 15 in the first direction X and the third direction Z respectively, the volume of the printing table 15 can be reduced on the basis of ensuring that the printed model is completely placed on the printing table 15, and thus the volume of the entire 3D printing device 10 can be reduced. Specifically, the printing table 15 can reciprocate in the first direction X. At this time, the relative movement distance between the printing mechanism 12 and the printing table 15 in the first direction X can be increased, and thus the moving range of the printing mechanism 12 in the first direction X can be expanded, and the distance of the 3D printing device 10 in the first direction X can be reduced. The reciprocating movement of the printing table 15 in the third direction Z can also reduce the height of the 3D printing device 10 in the third direction Z. Therefore, the provision of the printing table 15 can not only support the printed layer, but also the reciprocating movement of the printing table 15 in the first direction X and the third direction Z can also reduce the distances of the 3D printing device 10 in the first direction X and the third direction Z, thereby reducing the volume of the 3D printing device 10. Further, in order to drive the printing table 15 to move in the first direction X and the third direction Z, in some embodiments, the 3D printing device 10 further includes a third driving member (not shown in the figure). By providing the third driving member, the printing table 15 can be driven to move in the first direction X and the third direction Z respectively, without the need for the user to manually move the printing table 15, with a higher automation level and a better user experience.

[0053] Please refer to Figures 1 to 5 , Figure 4 is a schematic three-dimensional structure diagram of an embodiment of the 3D printing device of the present application; Figure 5 is another schematic three-dimensional structure diagram of an embodiment of the 3D printing device of the present application.

[0054] In an embodiment of the present application, the driving mechanism 13 includes a first driving member 131 and a first transmission assembly 132. The first driving member 131 is disposed on the side of the cross beam 111 away from the printing mechanism 12 along the second direction Y, and is spaced apart from the cross beam 111. The first transmission assembly 132 is respectively in transmission connection with the first driving member 131, the first slider 16 and the second slider 17. Specifically, the first driving member 131 can drive the first transmission assembly 132 to move, and the movement of the first transmission assembly 132 drives the first slider 16 and the second slider 17 to reciprocate in the second direction Y, so that the cross beam 111 can reciprocate in the second direction Y to drive the printing assembly 121 and the inkjet assembly 122 to reciprocate in the second direction Y. Since the printed layer is usually in a three-dimensional form, the reciprocating movement of the printing assembly 121 and the inkjet assembly 122 in the second direction Y can ensure the three-dimensional sense of the printed layer while reducing the height of the 3D printing device 10 in the second direction Y, so as to reduce the volume of the entire 3D printing device 10.

[0055] Further, a first support seat 1123 and a second support seat 1124 are respectively disposed at two ends of the first longitudinal beam 1121 in the second direction Y, and a third support seat 1125 and a fourth support seat 1126 are respectively disposed at two ends of the second longitudinal beam 1122 in the second direction Y. The settings of the first support seat 1123, the second support seat 1124, the third support seat 1125 and the fourth support seat 1126 can make the entire support mechanism 11 more stable. When the 3D printing device 10 is placed on a certain plane, the first support seat 1123, the second support seat 1124, the third support seat 1125 and the fourth support seat 1126 can support the entire 3D printing device 10 by giving a certain supporting force to the first longitudinal beam 1121 and the second longitudinal beam 1122, so that the 3D printing device 10 can be more stable during the printing process.

[0056] The first support seat 1123 is formed with a first notch 1131, the second support seat 1124 is formed with a second notch 1132, the third support seat 1125 is formed with a third notch 1133, and the fourth support seat 1126 is formed with a fourth notch 1134. The driving mechanism 13 also includes a first transmission wheel group 133, a second transmission wheel group 134, a first conveyor belt 135 and a first motor 136. The first transmission wheel group 133 includes a first transmission wheel 1331 disposed at the first notch 1131 and a second transmission wheel 1332 disposed at the second notch 1132. The second transmission wheel group 134 includes a third transmission wheel 1333 disposed at the third notch 1133 and a fourth transmission wheel 1334 disposed at the fourth notch 1134. The first conveyor belt 135 is sequentially wound around the first transmission wheel 1331, the second transmission wheel 1332, the third transmission wheel 1333 and the fourth transmission wheel 1334. The first motor 136 is drivingly connected to the first conveyor belt 135 to drive the first conveyor belt 135 to move. Specifically, a first notch 1131 is formed on a side of the first support seat 1123 facing the second support seat 1124, a second notch 1132 is formed on a side of the second support seat 1124 facing the first support seat 1123, a third notch 1133 is formed on a side of the third support seat 1125 facing the fourth support seat 1126, and a fourth notch 1134 is formed on a side of the fourth support seat 1126 facing the third support seat 1125. The first transmission wheel 1331, the second transmission wheel 1332, the third transmission wheel 1333, and the fourth transmission wheel 1334 are respectively arranged in the first notch 1131, the second notch 1132, the third notch 1133 and the fourth notch 1134. At this time, the first notch 1131, the second notch 1132, the third notch 1133 and the fourth notch 1134 can respectively play a good shielding role for the first transmission wheel 1331, the second transmission wheel 1332, the third transmission wheel 1333 and the fourth transmission wheel 1334 to prevent some debris from being drawn in during the transmission process to cause the first transmission wheel group 133 and the second transmission wheel group 134 to become stuck. Therefore, the setting of this structure can improve the smoothness of the transmission of the first transmission wheel group 133 and the second transmission wheel group 134. The first conveyor belt 135 is sequentially wound around the first transmission wheel 1331, the second transmission wheel 1332, the third transmission wheel 1333 and the fourth transmission wheel 1334 to form the first conveyor belt 135 into two upper and lower belts. At this time, the first transmission wheel 1331, the second transmission wheel 1332, the third transmission wheel 1333 and the fourth transmission wheel 1334 divide the first conveyor belt 135 into a first sub-conveyor belt 1351, a second sub-conveyor belt 1352 and a third sub-conveyor belt 1353.Specifically, the part between the first driving wheel 1331 and the second driving wheel 1332 is the first sub-conveyor belt 1351, the first sub-conveyor belt 1351 extends along the second direction Y, the part between the second driving wheel 1332 and the third driving wheel 1333 is the second sub-conveyor belt 1352, the second sub-conveyor belt 1352 extends along the first direction X, the part between the third driving wheel 1333 and the fourth driving wheel 1334 is the third sub-conveyor belt 1353, the third sub-conveyor belt 1353 extends along the second direction Y, and the moving direction of the third sub-conveyor belt 1353 is opposite to that of the first sub-conveyor belt 1351. Through the movement of the first sub-conveyor belt 1351 and the third sub-conveyor belt 1353, the first slider 16 and the second slider 17 can be driven to reciprocally slide in the second direction Y, and then the cross beam 111 can reciprocally slide in the second direction Y to drive the printing assembly 121 and the inkjet assembly 122 to reciprocally slide in the second direction Y. At this time, the printed layer printed by the printing assembly 121 can present a three-dimensional form, and the inkjet assembly 122 can also color the printed layer more evenly, so that the printed layer printed by the 3D printing device 10 can present a more colorful and three-dimensional form. At the same time, since the printing assembly 121 and the inkjet assembly 122 can reciprocally slide in the second direction Y, at this time, the distance between the printing mechanism 12 and the printing table 15 can also be reduced, and then the height of the entire 3D printing device 10 in the second direction Y can be reduced to reduce the overall volume of the 3D printing device 10. In addition, the setting of the first motor 136 can drive the first conveyor belt 135 to move, and through the movement of the first conveyor belt 135, the movement of the printing mechanism 12 in the second direction Y can be driven. The setting of the first motor 136 can realize automation and intelligence in the process of controlling the movement of the first conveyor belt 135, which is convenient for the user to operate and improves the user experience.

[0057] Optionally, the first motor 136 can be a DC motor, an asynchronous motor, a synchronous motor, or some other types of motors, which is not limited here.

[0058] In an embodiment of the present application, a first buckle 161 is provided at one end of the first slider 16 facing the first conveyor belt 135, and a second buckle 162 is provided at one end of the second slider 17 facing the first conveyor belt 135. A part of the first conveyor belt 135 is located within the first buckle 161 and the second buckle 162. Specifically, a first buckle 161 is provided at one end of the first slider 16 facing the first sub-conveyor belt 1351, and the belt above the first sub-conveyor belt 1351 is threaded through the first buckle 161. At this time, the first buckle 161 can play a certain limiting role on the first sub-conveyor belt 1351 to prevent the belt above the first sub-conveyor belt 1351 from sagging under its own gravity and contacting the belt below, thereby improving the smoothness of the transmission of the first sub-conveyor belt 1351, and further improving the smoothness of the transmission of the first conveyor belt 135. A second buckle 162 is provided at one end of the second slider 17 facing the third sub-conveyor belt 1353, and the belt above the third sub-conveyor belt 1353 is threaded through the second buckle 162. At this time, the second buckle 162 can play a certain limiting role on the third sub-conveyor belt 1353 to prevent the belt above the third sub-conveyor belt 1353 from sagging under its own gravity and contacting the belt below, thereby improving the smoothness of the transmission of the third sub-conveyor belt 1353, and further improving the smoothness of the transmission of the first conveyor belt 135. Therefore, the settings of the first buckle 161 and the second buckle 162 can play a good limiting role on the first conveyor belt 135, thereby ensuring the smoothness of the first conveyor belt 135 very well.

[0059] In an embodiment of the present application, the cross beam 111 includes a first surface 1111 and a second surface 1112 arranged opposite to each other along the second direction Y. The printing assembly 121 and the inkjet assembly 122 are arranged on the first surface 1111. The driving mechanism 13 further includes a second driving member 137 and a second transmission assembly 138. Among them, the second driving member 137 is arranged on the second surface 1112 of the cross beam 111. The second transmission assembly 138 is arranged on the first surface 1111 of the cross beam 111. The printing assembly 121 is arranged on the second transmission assembly 138, and the second transmission assembly 138 is used to drive the printing assembly 121 to move along the first direction X. The settings of the second driving member 137 and the second transmission assembly 138 can make the movement of the printing assembly 121 in the first direction X more labor-saving. Further, the second driving member 137, the printing assembly 121, and the inkjet assembly 122 are arranged opposite to each other on the cross beam 111, and the second driving member 137, the printing assembly 121, and the inkjet assembly 122 will not interfere with each other. At the same time, it can also provide space for the movement of the printing assembly 121 and the inkjet assembly 122 in the first direction X, thereby reducing the space in the first direction X while ensuring the three-dimensional sense of the printed layer, and further reducing the volume of the 3D printing device 10.

[0060] Specifically, the second transmission assembly 138 includes a third transmission wheel set 1381 and a second conveyor belt 1383. Among them, the third transmission wheel set 1381 is disposed on the first surface 1111 of the cross beam 111. The third transmission wheel set 1381 includes two fifth transmission wheels 1382 spaced apart along the first direction X. The second conveyor belt 1383 is respectively wound around the two fifth transmission wheels 1382. The second conveyor belt 1383 is drivingly connected to the second driving member 137 to drive the second conveyor belt 1383 to move in the first direction X. Specifically, the second driving member 137 drives the second conveyor belt 1383 to move along the first direction X. The second conveyor belt 1383 moving along the first direction X can drive the printing assembly 121 to move along the first direction X so that the printing assembly 121 can print the printing layer. After the printing layer is printed, the second conveyor belt 1383 drives the printing assembly 121 to move toward the side close to the inkjet assembly 122 so that the printing assembly 121 and the inkjet assembly 122 are connected by the connecting mechanism 14. Furthermore, the printing assembly 121 can drive the inkjet assembly 122 to inkjet the printing layer to color the printing layer, thereby realizing color printing of the printing layer. Driving the printing assembly 121 to move along the first direction X by the second driving member 137, the second conveyor belt 1383 and the third transmission wheel set 1381 can make the movement of the printing assembly 121 automated and intelligent, without manual operation by the user, and the user experience is better.

[0061] Optionally, the second driving member 137 can be a DC motor, or an asynchronous motor, or a synchronous motor, or some other types of motors, which is not limited here.

[0062] In an embodiment of the present application, the 3D printing device 10 further includes a guide rail 18. Among them, the guide rail 18 is disposed on the first surface 1111 of the cross beam 111. The guide rail extends along the first direction X and is spaced from the second transmission assembly 138 along the third direction Z. The guide rail 18 is used to guide the movement of the printing mechanism 12 along the first direction X. Among them, the third direction Z is perpendicular to the first direction X and the second direction Y. Therefore, the guide rail 18 can limit the movement of the printing mechanism 12 by guiding the movement of the printing mechanism 12 in the first direction X, so that the movement of the printing mechanism 12 in the first direction X can be more stable.

[0063] Please refer to Figures 1 to 6 , Figure 6 is Figure 1 an enlarged structural schematic diagram of a partial structure of B in

[0064] In an embodiment of the present application, the printing assembly 121 further includes a print head 1211 and a third slider 1212. The third slider 1212 is disposed at one end of the print head 1211 facing the guide rail 18 and is slidably connected to the guide rail 18. Specifically, since there are often some other structures on the print head 1211, direct sliding connection between the print head 1211 and the guide rail 18 may cause problems such as unstable connection. Therefore, the print head 1211 is slidably connected to the guide rail 18 through the third slider 1212. At this time, not only can the contact area between the print head 1211 and the guide rail 18 be enhanced to improve the connection stability, but also the third slider 1212 can play a good auxiliary role in the movement of the print head 1211 along the first direction X on the guide rail 18, making the entire sliding process smoother.

[0065] Optionally, in an embodiment of the present application, the print head 1211 is an FDM extrusion head, which is used to extrude a fluid material of a thermoplastic plastic wire after heating. It is a key component for FDM printing. The inkjet head 1221 is a UV inkjet head, which is used to spray UV ink on the surface of an object and then form a brightly colored image layer through irradiation with UV light or the like to instantaneously cure the ink. Of course, in some other embodiments, the print head 1211 may also use other extrusion heads, and the inkjet head 1221 may also use other inkjet heads, which are not limited herein.

[0066] Further, the inkjet assembly 122 further includes a fourth slider 1213. The fourth slider 1213 is disposed at one end of the inkjet head 1221 facing the guide rail 18 and is slidably connected to the guide rail 18. Specifically, since there are often some other structures on the inkjet head 1221, direct sliding connection between the inkjet head 1221 and the guide rail 18 may cause problems such as unstable connection. Therefore, the inkjet head 1221 is slidably connected to the guide rail 18 through the fourth slider 1213. At this time, not only can the contact area between the inkjet head 1221 and the guide rail 18 be enhanced to improve the connection stability, but also the fourth slider 1213 can play a good auxiliary role in the movement of the inkjet head 1221 along the guide rail in the first direction X, making the entire sliding process smoother.

[0067] It should be noted that terms such as "horizontal" and "vertical" do not require the components to be absolutely horizontal or vertical, but can be slightly inclined; terms such as "parallel" and "perpendicular" do not mean that the fittings are absolutely parallel or perpendicular to each other, but can have a certain angular deviation. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined. In addition, the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the products of the present application are customarily placed during use. It is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0068] It can be understood that the meaning of "a plurality of" in this article is at least two, such as two, three, etc., unless there are specific restrictive explanations. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally further includes steps or units not listed, or optionally further includes other steps or units inherent to these processes, methods, products or devices. The term "and / or" is merely a description of the associated relationship of the associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this article generally represents an "or" relationship between the associated objects before and after.

[0069] The above description is only the implementation manner of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, shall be included in the patent protection scope of the present application by the same token.

Claims

1. A 3D printing device, characterized in that, The 3D printing device (10) includes: a support mechanism (11); a printing mechanism (12) disposed on the support mechanism (11), the printing mechanism (12) including a printing component (121) and an inkjet component (122); a driving mechanism (13) disposed on the support mechanism (11) and drivingly connected to the printing component (121) for driving the printing component (121) to print; and a connecting mechanism (14) disposed between the printing component (121) and the inkjet component (122) for connecting the printing component (121) and the inkjet component (122); wherein, before the inkjet component (122) prints, the driving mechanism (13) drives the printing component (121) to move towards the inkjet component (122) so that the printing component (121) is connected to the inkjet component (122) through the connecting mechanism (14).

2. The 3D printing device according to claim 1, wherein, The connecting mechanism (14) includes: a first magnetic member (141) disposed on a side of the inkjet component (122) facing the printing component (121); a second magnetic member (142) disposed on a side of the printing mechanism (12) facing the inkjet component (122); after the printing layer is printed, the driving mechanism (13) drives the printing component (121) to move towards the inkjet component (122) until the first magnetic member (141) is adsorbed and connected to the second magnetic member (142).

3. The 3D printing device according to claim 2, characterized in that, The first magnetic member (141) includes an electromagnet, and the second magnetic member (142) includes a steel plate. After the printing layer is printed, the electromagnet is energized to magnetically attract the steel plate. After the inkjet component (122) finishes inkjetting on the printing layer, the electromagnet is de-energized to separate the inkjet component (122) from the steel plate.

4. The 3D printing device according to claim 1, characterized in that, The support mechanism (11) includes: a cross beam (111) extending along a first direction (X), the printing component (121) and the inkjet component (122) being disposed on the cross beam (111) and movable relative to the cross beam (111) along the first direction (X); a set of longitudinal beams (112) including a first longitudinal beam (1121) and a second longitudinal beam (1122) spaced apart along the first direction (X), both the first longitudinal beam (1121) and the second longitudinal beam (1122) extending along a second direction (Y), the first direction (X) and the second direction (Y) being perpendicularly disposed, and two ends of the cross beam (111) being movably connected to the first longitudinal beam (1121) and the second longitudinal beam (1122) respectively, the cross beam (111) being slidable back and forth along the second direction (Y).

5. The 3D printing device according to claim 4, wherein, The inkjet component (122) includes: an inkjet head (1221) disposed on the cross beam (111); A moisturizing component (1222) is arranged at one end of the crossbeam (111) close to the first longitudinal beam (1121), and is arranged on the same side of the crossbeam (111) as the inkjet head (1221). The moisturizing component (1222) abuts against the inkjet head (1221) when the inkjet head (1221) is not working.

6. The 3D printing device according to claim 3, characterized in that, The 3D printing device (10) further comprises: A printing table (15), wherein the printing table (15) is arranged below the printing component (121), and the printing table (15) can reciprocate along the first direction (X) and the third direction (Z), wherein the third direction (Z) is arranged perpendicular to the first direction (X) and the second direction (Y).

7. The 3D printing device according to claim 3, characterized in that, The 3D printing device (10) further comprises: A first sliding block (16) and a second sliding block (17), wherein both ends of the cross beam (111) are respectively slidably connected to the first longitudinal beam (1121) and the second longitudinal beam (1122) via the first sliding block (16) and the second sliding block (17).

8. The 3D printing device according to claim 7, characterized in that, The driving mechanism (13) comprises: A first driving member (131) is arranged along the second direction (Y) on a side of the crossbeam (111) away from the printing mechanism (12), and is spaced apart from the crossbeam (111); The first transmission assembly (132) is respectively connected in transmission with the first driving member (131), the first sliding block (16) and the second sliding block (17).

9. The 3D printing device according to claim 8, wherein, The first longitudinal beam (1121) is provided with a first support seat (1123) and a second support seat (1124) at two ends in the second direction (Y), and the second longitudinal beam (1122) is provided with a third support seat (1125) and a fourth support seat (1126) at two ends in the second direction (Y), the first support seat (1123) is formed with a first notch (1131), the second support seat (1124) is formed with a second notch (1132), the third support seat (1123) is formed with a third notch (1133), and the fourth support seat (1126) is formed with a fourth notch (1134), and the driving mechanism (13) further comprises: A first transmission wheel set (133), comprising a first transmission wheel (1331) arranged at the first notch (1131) and a second transmission wheel (1332) arranged at the second notch (1132); A second transmission wheel set (134), comprising a third transmission wheel (1333) arranged in the third notch (1133) and a fourth transmission wheel (1334) arranged in the fourth notch (1134); A first conveyor belt (135) is sequentially wound around the first transmission wheel (1131), the second transmission wheel (1132), the third transmission wheel (1133) and the fourth transmission wheel (1134); A first motor (136) is drivingly connected to the first conveyor belt (135) to drive the first conveyor belt (135) to move.

10. The 3D printing device according to claim 9, characterized in that, One end of the first slider (16) facing the first conveyor belt (135) is provided with a first bent buckle (161), one end of the second slider (17) facing the first conveyor belt (135) is provided with a second bent buckle (162), and a part of the first conveyor belt (135) is located within the first bent buckle (161) and the second bent buckle (162).

11. The 3D printing device according to claim 3, wherein, The cross beam (111) includes a first surface (1111) and a second surface (1112) arranged opposite to each other along the second direction (Y). The printing assembly (121) and the inkjet assembly (122) are arranged on the first surface (1111). The driving mechanism (13) further includes: A second driving member (137) arranged on the second surface (1112) of the cross beam (111); A second transmission assembly (138) arranged on the first surface (1111) of the cross beam (111). The printing assembly (121) is arranged on the second transmission assembly (138). The second transmission assembly (138) is used to drive the printing assembly (121) to move along the first direction (X).

12. The 3D printing device according to claim 11, characterized in that, The second transmission assembly (138) includes: A third transmission wheel group (1381) arranged on the first surface (1111) of the cross beam (111). The third transmission wheel group (1381) includes two fifth transmission wheels (1382) spaced apart along the first direction (X); A second conveyor belt (1383) wound around the two fifth transmission wheels (1382) respectively. The second conveyor belt (1383) is drivingly connected to the second driving member (137) to drive the second conveyor belt (1383) to move in the first direction (X).

13. The 3D printing device according to claim 11, characterized in that, The 3D printing device (10) further includes: A guide rail (18) arranged on the first surface (1111) of the cross beam (111). The guide rail (18) extends along the first direction (X) and is spaced apart from the second transmission assembly (138) along the third direction (Z). The guide rail (18) is used to guide the movement of the printing mechanism (12) along the first direction (X); Wherein, the third direction (Z) is perpendicular to the first direction (X) and the second direction (Y).

Images