Driving kit and 3D printing device applying same

Abstract

The embodiment of the utility model provides a driving kit and a 3D printing device applying the same. The driving kit comprises a main body support, a transmission assembly, a driving assembly and a tensioning assembly. The main body bracket comprises two top ends which are arranged at an interval; the transmission assembly comprises a synchronous belt and two transmission wheels, the two transmission wheels are arranged at the two top ends respectively, and the synchronous belt is in transmission connection with the two transmission wheels; the driving assembly comprises a driving part and an output end which are in driving connection, the output end is located between the two top ends, and the output end is in transmission connection with the synchronous belt; the tensioning assembly comprises a synchronous wheel and a tensioning adjusting part, the tensioning adjusting part is connected with the synchronous wheel and the main body support, the synchronous wheel is located between the two top ends, the synchronous wheel and the output end are arranged in a staggered mode, and the synchronous wheel is in transmission connection with the synchronous belt.

Description

Technical Field

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

[0002] 3D printing technology is a rapid prototyping technology that uses digital model files as the basis, special wax materials, powdered metals or plastics and other bondable materials to print layers of materials to create three-dimensional objects. Fused deposition modeling technology is one of the main 3D printing technologies. This technology heats and melts the hot-melt filaments, extrudes them from the nozzle, and deposits them on the molding platform or the previous layer of solidified material. When the temperature is lower than the solidification temperature of the filaments, it begins to solidify and form, and finally forms a physical object.

[0003] In existing 3D printers, the nozzle assembly is usually driven by a driving assembly, and the driving method of the driving assembly is mostly carried out by the combination of a synchronous belt and a transmission wheel. In order to improve the stability of the transmission process or facilitate the installation design of the 3D printer, the driving motor is usually set at the end of the transmission stroke. However, since the driving motor itself has a certain volume, the end of the transmission stroke that the synchronous belt can reach is still a certain distance from the end of the 3D printer. No transmission belt is set in this distance, which makes the space utilization rate of the 3D printer low and cannot adapt to the trend of miniaturization of 3D printers. At the same time, it is very necessary to set a tensioner in the synchronous belt transmission structure. The current tensioner usually occupies the volume of the 3D printer, which is not conducive to the miniaturization of the 3D printer.

[0004] How to solve the above problems is something that those skilled in the art need to consider. Utility Model Content

[0005] In order to solve the problems in the prior art, an embodiment of the present application provides a driving kit and a 3D printing device using the same.

[0006] The embodiment of the present application provides a driving kit, including a main support, a transmission assembly, a driving assembly and a tensioning assembly. The main support includes two top ends arranged at intervals; the transmission assembly includes a synchronous belt and two transmission wheels, the two transmission wheels are respectively arranged at the two top ends, and the synchronous belt is connected to the two transmission wheels in a transmission manner; the driving assembly includes a driving part and an output end connected in a driving manner, the output end is located between the two top ends, and the output end is connected to the synchronous belt in a transmission manner; the tensioning assembly includes a synchronous wheel and a tensioning adjustment part, the tensioning adjustment part is connected to the synchronous wheel and the main support respectively, the synchronous wheel is located between the two top ends and is staggered with the output end, and the synchronous wheel is connected to the synchronous belt in a transmission manner.

[0007] In one embodiment, the two top ends are spaced apart along a first direction, the output end and the synchronous wheel are arranged between the two top ends along the first direction, the output end and the synchronous wheel are staggered along the first direction, and the synchronous belt sequentially connects one transmission wheel, the output end, the synchronous wheel and the other transmission wheel to form a closed loop.

[0008] In one embodiment, the output end and the synchronous wheel are arranged on the same side of a line connecting the two transmission wheels along the first direction, and the synchronous wheel is located between the output end and one of the transmission wheels connected to the output end along the first direction.

[0009] In one embodiment, the two top ends are respectively a first end and a second end, one transmission wheel is connected to the first end, and the other transmission wheel is connected to the second end, the synchronous belt extends from the transmission wheel located at the first end to the output end and is wound around the side of the output end away from the first end, the synchronous belt further extends from the output end to the synchronous wheel and is wound around the side of the synchronous wheel away from the output end, the synchronous belt further extends from the synchronous wheel to the transmission wheel located at the second end and is wound around the side of the transmission wheel away from the first end, and the synchronous belt further extends from the transmission wheel located at the second end to the transmission wheel located at the first end and is wound around the side of the transmission wheel away from the second end.

[0010] In one embodiment, the tensioning adjustment portion is arranged on the side of the synchronous wheel away from the output end along the first direction, the tensioning adjustment portion and the synchronous wheel are arranged on the same layer along the first direction, the output end is arranged on the same side of the line connecting the tensioning adjustment portion and the synchronous wheel, and the two transmission wheels are arranged on the other side of the line connecting the tensioning adjustment portion and the synchronous wheel.

[0011] In one embodiment, the tensioning adjustment part includes a connecting seat and an elastic member, the synchronous wheel is rotatably connected to the connecting seat, the connecting seat is connected to the elastic member, the elastic member is connected to the main body bracket, and the elastic member is located on the side of the connecting seat away from the output end.

[0012] In one embodiment, the tensioning adjustment part also includes an adjusting piece, the connecting seat is detachably connected to the main body bracket through the adjusting piece, the adjusting piece is connected to the main body bracket, the adjusting piece is provided with a waist-shaped hole, the connecting seat is provided with a circular hole, the circular hole is arranged corresponding to the waist-shaped hole, and the aperture of the waist-shaped hole is larger than the inner diameter of the circular hole.

[0013] In one embodiment, the connecting seat includes a top plate, two side plates arranged at intervals, and two connecting blocks arranged at intervals, the two side plates are respectively connected to the top plate and are located on the same side of the top plate, the synchronous wheel is arranged between the two side plates and connected thereto, the top plate is connected to the elastic member on the side away from the synchronous wheel, each of the side plates is connected to one of the connecting blocks, one of the connecting blocks is connected to the adjusting member, and the other of the connecting blocks is abutted against the main bracket.

[0014] In one embodiment, the main body bracket includes two spaced-apart side walls, and the two opposite sides of the connecting seat are respectively in contact with the two side walls, the tensioning adjustment part also includes a connecting rod, which is arranged between the two side walls and connected to the two side walls, one end of the elastic member is connected to the connecting rod and the other spaced-apart end is connected to the connecting seat, one of the side walls is provided with a receiving hole, the adjusting member is embedded in the receiving hole and connected to one of the side walls.

[0015] An embodiment of the present application further provides a 3D printing device, which includes a nozzle kit, a base kit and a drive kit as described in any one of the above embodiments, wherein the drive kit is connected to the base kit and the nozzle kit.

[0016] It can be understood that in the drive kit of the present application, the two transmission wheels are respectively arranged at the two top ends, and the synchronous belt is connected to the two transmission wheels in a transmission manner. In theory, the travel that the synchronous belt can drive corresponds to the distance between the two top ends; at the same time, the output end for driving the synchronous belt to rotate is located between the two top ends, that is, there is a certain spacing distance between the output end and any of the two top ends. The driving component is located between the two top ends instead of being arranged at the edge of the corresponding main body bracket, so that the edge space of the main body bracket can be released, thereby improving the space utilization efficiency. Moreover, the synchronous wheel is located between the two top ends and is staggered with the output end, so that the synchronous wheel and the output end are both connected to the synchronous belt in a transmission manner. Further, a tensioning adjustment part is arranged between the main body bracket and the synchronous wheel, so that the tensioning of the synchronous belt can be realized, and the distance between the two top ends can also be used to accommodate the tensioning component, thereby improving the space utilization efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A three-dimensional schematic diagram of a driving kit provided in an embodiment of the present application at one angle.

[0018] Figure 2 A three-dimensional schematic diagram of the drive kit provided in an embodiment of the present application from another angle.

[0019] Figure 3 for Figure 1 Schematic cross-sectional view along direction III-III.

[0020] Figure 4 Partial perspective view of a driving kit provided by an embodiment of the present application at an angle.

[0021] Figure 5 Partial perspective view of the driving kit provided by an embodiment of the present application at another angle.

[0022] Figure 6 Partial perspective view of the main body bracket of the driving kit provided by an embodiment of the present application.

[0023] Figure 7 Perspective view of the tensioning assembly of the driving kit provided by an embodiment of the present application.

[0024] Figure 8 Perspective view of a 3D printing device provided by an embodiment of the present application.

[0025] Description of main component symbols

[0026] Driving kit 10

[0027] Main body bracket 11

[0028] Top end 110

[0029] First end 111

[0030] Second end 112

[0031] Side wall 113

[0032] Bottom wall 114

[0033] Through hole 115

[0034] Carrier table 117

[0035] Boss 116

[0036] Receiving hole 118

[0037] Transmission assembly 12

[0038] Timing belt 121

[0039] Drive pulley 122

[0040] Drive assembly 13

[0041] Drive part 131

[0042] Output end 132

[0043] Output shaft 133

[0044] Tensioning assembly 14

[0045] Synchronization pulley 141

[0046] Tension adjustment part 142

[0047] Connecting seat 143

[0048] Side plate 1431

[0049] Top plate 1432

[0050] Connecting block 1433

[0051] Round hole 1434

[0052] Elastic member 144

[0053] Adjusting member 145

[0054] Slot hole 1451

[0055] Connecting rod 146

[0056] First direction X

[0057] 3D printing device 1

[0058] Nozzle kit 15

[0059] Base kit 16

[0060] The following specific embodiments will further illustrate the present application in conjunction with the above-mentioned drawings. Specific embodiments

[0061] The following description will describe the content of the present application more comprehensively with reference to the drawings. The exemplary embodiments of the present application are shown in the drawings. However, the present application can be implemented in many different forms and should not be construed as limited to the exemplary embodiments set forth herein. These exemplary embodiments are provided to make the present application thorough and complete and to fully convey the scope of the present application to those skilled in the art. Similar reference numerals denote the same or similar components. The terms used herein are for the purpose of describing particular exemplary embodiments only and are not intended to limit the present application. As used herein, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include the plural forms as well. In addition, when used herein, "comprising" and / or "including" and / or "having", integers, steps, operations, components and / or components are included, but do not exclude the presence or addition of one or more other features, regions, integers, steps, operations, components and / or groups thereof. Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. In addition, unless clearly defined in the text, terms such as those defined in a general dictionary should be construed to have a meaning consistent with their meaning in the relevant art and the content of this application and will not be construed as idealized or overly formal.

[0062] Usually, in existing 3D printers, the nozzle assembly is usually driven by a driving assembly, and the driving method of the driving assembly is mostly carried out by the combination of a synchronous belt and a transmission wheel. In order to improve the stability of the transmission process or facilitate the installation design of the 3D printer, the driving motor is usually set at the end of the transmission stroke. However, since the driving motor itself has a certain volume, the end of the transmission stroke that the synchronous belt can reach is still a certain distance from the end of the 3D printer. The transmission belt is not set in this distance, which makes the space utilization rate of the 3D printer low and cannot adapt to the trend of miniaturization of 3D printers. At the same time, it is very necessary to set a tensioner in the synchronous belt transmission structure. The current tensioner usually occupies the volume of the 3D printer, which is not conducive to the miniaturization of the 3D printer.

[0063] Correspondingly, an embodiment of the present application provides a driving kit and a 3D printing device using the same. The driving kit includes a main support, a transmission assembly, a driving assembly and a tensioning assembly. The main support includes two top ends spaced apart; the transmission assembly includes a synchronous belt and two transmission wheels, the two transmission wheels are respectively disposed at the two top ends, and the synchronous belt is connected to the two transmission wheels in a transmission manner; the driving assembly includes a driving portion and an output end connected in a driving manner, the output end is located between the two top ends, and the output end is connected to the synchronous belt in a transmission manner; the tensioning assembly includes a synchronous wheel and a tensioning adjustment portion, the tensioning adjustment portion is respectively connected to the synchronous wheel and the main support, the synchronous wheel is located between the two top ends and is staggered with the output end, and the synchronous wheel is connected to the synchronous belt in a transmission manner.

[0064] Furthermore, in the drive kit of the present application, the two transmission wheels are respectively arranged at the two top ends, and the synchronous belt is connected to the two transmission wheels in a transmission manner. In theory, the travel that the synchronous belt can drive corresponds to the distance between the two top ends. At the same time, the output end for driving the synchronous belt to rotate is located between the two top ends, that is, there is a certain spacing distance between the output end and any of the two top ends. The driving component is located between the two top ends instead of being arranged at the edge of the corresponding main body bracket, so that the edge space of the main body bracket can be released, thereby improving the space utilization efficiency. Moreover, the synchronous wheel is located between the two top ends and is staggered with the output end, so that the synchronous wheel and the output end are both connected to the synchronous belt in a transmission manner. Further, a tensioning adjustment part is arranged between the main body bracket and the synchronous wheel, so that the tensioning of the synchronous belt can be realized, and the distance between the two top ends can also be used to accommodate the tensioning component, thereby improving the space utilization efficiency.

[0065] Those skilled in the art can understand that "3D printing" refers to a technology that uses a digital model file as the basis, and uses powdered metal or plastic and other bondable materials to construct objects by printing layer by layer.

[0066] The following will describe exemplary embodiments in conjunction with the accompanying drawings. It should be noted that the components depicted in the reference drawings are not necessarily shown to scale; and the same or similar components will be given the same or similar reference numerals or similar technical terms.

[0067] The specific implementation methods of the present application are further described in detail below with reference to the accompanying drawings.

[0068] like Figures 1 to 7 As shown, the embodiment of the present application provides a driving kit 10, including a main frame 11, a transmission assembly 12, a driving assembly 13 and a tensioning assembly 14. The transmission assembly 12, the driving assembly 13 and the tensioning assembly 14 are all connected to the main frame 11, the transmission assembly 12 is arranged in the main frame 11, the driving assembly 13 is connected to the middle section of the main frame 11 and is in transmission connection with the transmission assembly 12, and the tensioning assembly 14 is movably connected to the middle section of the main frame 11 and is connected to the transmission assembly 12.

[0069] In one embodiment, the main support 11 includes two top ends 110 arranged at intervals. The transmission assembly 12 includes a synchronous belt 121 and two transmission wheels 122, the two transmission wheels 122 are respectively arranged at the two top ends 110, and the synchronous belt 121 is in transmission connection with the two transmission wheels 122. The driving assembly 13 includes a driving portion 131 and an output end 132, the output end 132 is located between the two top ends 110, and the output end 132 is in transmission connection with the synchronous belt 121. The tensioning assembly 14 includes a synchronous wheel 141 and a tensioning adjustment portion 142, the tensioning adjustment portion 142 is respectively connected to the synchronous wheel 141 and the main support 11, the synchronous wheel 141 is located between the two top ends 110 and is staggered with the output end 132, and the synchronous wheel 141 is in transmission connection with the synchronous belt 121.

[0070] It can be understood that in the drive kit 10 of the present application, the two transmission wheels 122 are respectively arranged at the two top ends 110, and the synchronous belt 121 is connected to the two transmission wheels 122 in transmission. In theory, the travel that the synchronous belt 121 can drive corresponds to the distance between the two top ends 110; at the same time, the output end 132 used to drive the synchronous belt 121 to rotate is located between the two top ends 110, that is, there is a certain spacing distance between the output end 132 and any of the two top ends 110, and the driving component 13 is located between the two top ends 110, so that the edge space of the main support 11 can be released, thereby improving the space utilization efficiency. Moreover, the synchronous wheel 141 is located between the two top ends 110 and is staggered with the output end 132, so that the synchronous wheel 141 and the output end 132 are both connected to the synchronous belt 121 in transmission. Further, a tensioning adjustment part 142 is arranged between the main support 11 and the synchronous wheel 141, so that the tensioning of the synchronous belt 121 can be realized, and the distance between the two top ends 110 can also be used to accommodate the tensioning component 14, thereby improving the space utilization efficiency.

[0071] In one embodiment, the extension direction of the long side of the main frame 11 corresponds to the first direction X, and the two ends of the main frame 11 spaced apart along the first direction X correspond to two top ends 110. The two transmission wheels 122 of the transmission assembly 12 are respectively disposed at the two top ends 110, and the synchronous belt 121 is correspondingly disposed between the two top ends 110. The driving assembly 13 and the tensioning assembly 14 are correspondingly disposed between the two top ends 110 along the first direction X.

[0072] In this embodiment, the main frame 11 includes two spaced side walls 113, and the two side walls 113 are connected by a bottom wall 114. The length directions of the two side walls 113 are substantially along the first direction X, and the transmission wheel 122 is sandwiched between the two side walls 113. The transmission wheel 122 can be connected to the side walls 113 through a rotating shaft (not shown) that can simultaneously pass through the two side walls 113 and the transmission wheel 122.

[0073] In this embodiment, the driving assembly 13 is connected to one of the two side walls 113, the driving part 131 is located outside the main frame 11, the output end 132 is located inside the main frame 11, and the driving part 131 and the output end 132 are both located between the two transmission wheels 122. The driving part 131 is connected to one of the side walls 113 for fixing, and a through hole 115 is provided on the side wall 113. The output shaft 133 of the driving part 131 extends into the main frame 11 through the through hole 115 to achieve connection with the output end 132, and is used to transmit the rotational torque output by the driving part 131 to the output end 132, so that the output end 132 can drive the synchronous belt 121 to move.

[0074] It can be understood that the driving part 131 can adopt a driving motor, and the output end 132 can be a wheel structure that can drive the synchronous belt 121. Both can adopt known and feasible structures, and their specific parameters and detailed connection methods are not repeated.

[0075] In one embodiment, the two top ends 110 are spaced apart along the first direction X, the output end 132 and the synchronous wheel 141 are disposed between the two top ends 110 along the first direction X, and the output end 132 and the synchronous wheel 141 are staggered along the first direction X. The synchronous belt 121 sequentially connects one transmission wheel 122, the output end 132, the synchronous wheel 141 and another transmission wheel 122 to form a closed loop.

[0076] In one embodiment, the output end 132 and the synchronous wheel 141 are disposed on the same side of a line connecting two transmission wheels 122 along the first direction X. The synchronous wheel 141 is located along the first direction X between the output end 132 and a transmission wheel 122 connected to the output end 132 .

[0077] In this embodiment, the two tops 110 are respectively a first end 111 and a second end 112. One transmission wheel 122 is connected to the first end 111, and the other transmission wheel 122 is connected to the second end 112. The synchronous belt 121 extends from the transmission wheel 122 located at the first end 111 to the output end 132 and is wound around the side of the output end 132 away from the first end 111; the synchronous belt 121 further extends from the output end 132 to the synchronous wheel 141 and is wound around the side of the synchronous wheel 141 away from the output end 132; the synchronous belt 121 further extends from the synchronous wheel 141 to the transmission wheel 122 provided at the second end 112 and is wound around the side of the transmission wheel 122 at the second end 112 away from the first end 111; the synchronous belt 121 further extends from the transmission wheel 122 provided at the second end 112 to the transmission wheel 122 provided at the first end 111 and is wound around the side of the transmission wheel 122 at the first end 111 away from the second end 112.

[0078] In one embodiment, the tension adjusting portion 142 is disposed along the first direction X on the side of the synchronous wheel 141 away from the output end 132. The tension adjusting portion 142 and the synchronous wheel 141 are arranged on the same layer along the first direction X. The output end 132 is disposed on the same side of the line connecting the tension adjusting portion 142 and the synchronous wheel 141, and the two transmission wheels 122 are disposed on the other side of the line connecting the tension adjusting portion 142 and the synchronous wheel 141.

[0079] It can be understood that the staggered output end 132 and the synchronous wheel 141 cooperate with the two transmission wheels 122 to tension the synchronous belt 121 to ensure the frictional transmission between the synchronous belt 121 and the output end 132, the synchronous wheel 141 and the two transmission wheels 122. The synchronous belt 121 includes a section connecting the output end 132 and the transmission wheel 122 provided at the first end 111, and another section connecting the two transmission wheels 122. The output end 132 is arranged closer to the second end 112 along the first direction X. At the same time, the output end 132 is directly connected to the transmission wheel 122 provided at the first end 111, so as to construct a space sufficient to accommodate the tensioning assembly 14 between the above two sections of the synchronous belt 121. Therefore, the tensioning assembly 14 can be reasonably arranged between the two transmission wheels 122 without interfering with the synchronous belt 121, further improving the space utilization efficiency inside the drive kit 10.

[0080] In one embodiment, the tension adjusting portion 142 includes a connecting seat 143 and an elastic member 144, and the connecting seat 143 is connected to the elastic member 144. The synchronous wheel 141 is rotatably connected to the connecting seat 143, the elastic member 144 is connected to the main body bracket 11, and the elastic member 144 is located on the side of the connecting seat 143 away from the output end 132.

[0081] In this embodiment, the tension adjusting part 142 further includes a connecting rod 146, and the connecting rod 146 is arranged between two side walls 113 and connected to the two side walls 113. One end of the elastic member 144 is connected to the main body bracket 11 through the connecting rod 146, and the other end of the elastic member 144 at intervals is connected to the connecting seat 143. Specifically, on one side of the two side walls 113 facing each other, there are convex platforms 116 respectively. The connecting rod 146 penetrates through the two side walls 113 and is carried on the convex platforms 116, so that the connecting rod 146 and the connecting seat 143 are substantially flush along the first direction X. The elastic member 144 is shown as a spring for example, and the two ends of the elastic member are respectively hooked to the connecting rod 146 and the connecting seat 143, so that the elastic member 144 is in a stretched state. In other embodiments, the elastic member 144 can also be an elastic rubber rod. It can be understood that the structures of the two convex platforms 116 can be different. The structure for accommodating the connecting rod 146 on one convex platform 116 is a hole that is closed around the connecting rod 146, and the structure for accommodating the connecting rod 146 on the other convex platform 116 is a semi-open groove.

[0082] In one embodiment, the tension adjusting part 142 further includes an adjusting member 145, and the connecting seat 143 is detachably connected to the main body bracket 11 through the adjusting member 145, and the adjusting member 145 is connected to the main body bracket 11.

[0083] In one embodiment, the connecting seat 143 includes a top plate 1432, two side plates 1431 arranged at intervals, and two connecting blocks 1433 arranged at intervals. The two side plates 1431 are respectively connected to the top plate 1432 and are located on the same side of the top plate 1432. The synchronous pulley 141 is arranged between the two side plates 1431 and connected to them. The side of the top plate 1432 away from the synchronous pulley 141 is connected to the elastic member 144. Each side plate 1431 is connected to a connecting block 1433. One connecting block 1433 is connected to the adjusting member 145, and the other connecting block 1433 abuts against the main body bracket 11.

[0084] In one embodiment, the connecting seat 143 includes two side plates 1431 and a top plate 1432. The two side plates 1431 are arranged at intervals, and one top plate 1432 is arranged between the two side plates 1431 and respectively connected to the two side plates 1431. The two side plates 1431 are configured to be in guiding match with the side walls 113, and the two side plates 1431 are configured to be connected to the transmission pulley 122.

[0085] In this embodiment, the two side plates 1431 are arranged parallel to each other at intervals, and openings (not shown in the figure) are formed on both of the two side plates 1431. The transmission pulley 122 can be arranged between the two side plates 1431 and connected to the two side plates 1431 through a rotating shaft (not shown in the figure) passing through the opening. The side plate 1431 can drive the transmission pulley 122 to move synchronously, and at the same time, the transmission pulley 122 can rotate relative to the connecting seat 143 to realize the movement between the transmission pulley 122 and the synchronous belt 121.

[0086] In one embodiment, two opposite sides of the connecting seat 143 are respectively in contact with two side walls 113. One of the side walls 113 is provided with a receiving hole 118, and the adjusting member 145 is embedded in the receiving hole 118 and connected to one of the side walls 113.

[0087] In this embodiment, the side wall 113 without the receiving hole 118 also forms a carrier 117. A connecting block 1433 is adjustably connected to the adjusting member 145, and the other connecting block 1433 is carried on the carrier 117 to guide the connecting seat 143. It can be understood that the structures of the two carriers 117 can be different. The middle of one carrier 117 is penetrated by the receiving hole 118, and the periphery of the adjusting member 145 is clamped in the carrier 117. The other carrier 117 is smaller in height, and the connecting block 1433 is arranged on the top surface of the carrier 17.

[0088] In other embodiments, the two side walls 113 can both be provided with receiving holes 118. Correspondingly, the number of the adjusting members 145 is two. The two adjusting members 145 are respectively located on two opposite sides of the connecting seat 143. Each adjusting member 145 is connected to a side plate 1431, and the two side plates 1431 are symmetrically fixed to the two side walls 113 through the two adjusting members 145 respectively.

[0089] In one embodiment, the adjusting member 145 is provided with an oblong hole 1451, and the connecting seat 143 is provided with a round hole 1434. The round hole 1434 is arranged corresponding to the oblong hole 1451, and the aperture of the oblong hole 1451 is larger than the inner diameter of the round hole 1434.

[0090] In this embodiment, the adjusting member 145 and the connecting seat 143 are detachably connected by a bolt or a rotating shaft (not shown in the figure) that can pass through the oblong hole 1451 and the round hole 1434 at the same time. The oblong hole 1451 is longer in the first direction X, so that the connecting seat 143 can be adjusted in position relative to the adjusting member 145 in the first direction X. When it is necessary to adjust the position of the connecting seat 143 in the first direction X, the bolt or the rotating shaft (not shown in the figure) that locks the adjusting member 145 and the connecting seat 143 can be loosened, and the connecting seat 143 can be moved in the first direction X to a suitable position and then the bolt (not shown in the figure) can be locked again.

[0091] It can be understood that when the synchronous belt 121 is tensioned and adjusted, first loosen the lock between the connecting block 1433 and the adjusting member 145, so that the connecting seat 143 is pulled in the first direction X under the mutual cooperation of the elastic member 144 and the synchronous belt 121 until the synchronous belt 121 is in a tensioned position, and then lock the connecting block 1433 and the adjusting member 145.

[0092] Further combined with Figure 8As shown in the figure, an embodiment of the present application further provides a 3D printing device 1, which includes a nozzle kit 15, a base kit 16, and the aforementioned drive kit 10. The drive kit 10 is connected to the base kit 16 and the nozzle kit 15.

[0093] In the foregoing, the specific embodiments of the present application have been described with reference to the accompanying drawings. However, those of ordinary skill in the art can understand that various changes and substitutions can be made to the specific embodiments of the present application without departing from the spirit and scope of the present application. These changes and substitutions all fall within the scope defined by the present application.

Claims

1. A drive kit, characterized in that, include: A main body support, comprising two top ends spaced apart from each other; A transmission assembly, comprising a synchronous belt and two transmission wheels, wherein the two transmission wheels are respectively arranged at the two top ends, and the synchronous belt is in transmission connection with the two transmission wheels; A driving assembly, comprising a driving portion and an output end connected to the driving connection, wherein the output end is located between the two top ends and is connected to the synchronous belt drive; The tensioning assembly includes a synchronous wheel and a tensioning adjustment part, wherein the tensioning adjustment part is respectively connected to the synchronous wheel and the main support, the synchronous wheel is located between the two top ends and is staggered with the output end, and the synchronous wheel is connected to the synchronous belt transmission.

2. The drive kit according to claim 1, wherein The two top ends are arranged at intervals along the first direction, the output end and the synchronous wheel are arranged between the two top ends along the first direction, the output end and the synchronous wheel are staggered along the first direction, and the synchronous belt sequentially connects one of the transmission wheels, the output end, the synchronous wheel and the other transmission wheel.

3. The drive kit according to claim 2, wherein The output end and the synchronous wheel are arranged on the same side of a line connecting the two transmission wheels along the first direction, and the synchronous wheel is located between the output end and one of the transmission wheels connected to the output end along the first direction.

4. The drive kit according to claim 1, characterized in that, The two top ends are respectively a first end and a second end, one transmission wheel is connected to the first end, and the other transmission wheel is connected to the second end, the synchronous belt extends from the transmission wheel located at the first end to the output end and is wound around the side of the output end away from the first end, the synchronous belt further extends from the output end to the synchronous wheel and is wound around the side of the synchronous wheel away from the output end, the synchronous belt further extends from the synchronous wheel to the transmission wheel located at the second end and is wound around the side of the transmission wheel away from the first end, and the synchronous belt further extends from the transmission wheel located at the second end to the transmission wheel located at the first end and is wound around the side of the transmission wheel away from the second end.

5. The drive kit according to claim 2, characterized in that, The tensioning adjustment part is arranged on the side of the synchronous wheel away from the output end along the first direction, the tensioning adjustment part and the synchronous wheel are arranged on the same layer along the first direction, the output end is arranged on the same side of the line connecting the tensioning adjustment part and the synchronous wheel, and the two transmission wheels are arranged on the other side of the line connecting the tensioning adjustment part and the synchronous wheel.

6. The drive kit according to claim 1, wherein, The tension adjustment part includes a connecting seat and an elastic member, the synchronous wheel is rotatably connected to the connecting seat, the connecting seat is connected to the elastic member, the elastic member is connected to the main support, and the elastic member is located on the side of the connecting seat away from the output end.

7. The drive kit according to claim 6, characterized in that, The tensioning adjustment part also includes an adjusting piece, and the connecting seat is detachably connected to the main body bracket through the adjusting piece, and the adjusting piece is connected to the main body bracket. The adjusting piece is provided with a waist-shaped hole, and the connecting seat is provided with a circular hole, and the circular hole is arranged corresponding to the waist-shaped hole, and the aperture of the waist-shaped hole is larger than the inner diameter of the circular hole.

8. The drive kit according to claim 7, wherein, The connecting seat includes a top plate, two side plates arranged at intervals, and two connecting blocks arranged at intervals. The two side plates are respectively connected to the top plate and located on the same side of the top plate. The synchronous pulley is arranged between the two side plates and connected thereto. The side of the top plate away from the synchronous pulley is connected to the elastic member. Each side plate is connected to one connecting block. One connecting block is connected to the adjusting member, and the other connecting block abuts against the main body bracket.

9. The drive kit according to claim 7, characterized in that, The main body bracket includes two side walls arranged at intervals. The opposite sides of the connecting seat are respectively in contact with the two side walls. The tension adjusting portion further includes a connecting rod. The connecting rod is arranged between the two side walls and connected to the two side walls. One end of the elastic member is connected to the connecting rod, and the spaced other end thereof is connected to the connecting seat. One side wall is provided with a receiving hole. The adjusting member is embedded in the receiving hole and connected to one side wall.

10. A 3D printing device, characterized in that, It includes a nozzle kit, a base kit, and a drive kit according to any one of claims 1 to 9. The drive kit is connected to the base kit and the nozzle kit.

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