Multi-consumable extrusion printing device and 3D printing equipment applying same

Abstract

The embodiment of the utility model provides a multi-consumable extrusion printing device and 3D printing equipment applying the multi-consumable extrusion printing device. The multi-consumable extrusion printing device comprises a driving assembly, a switching assembly and a plurality of extrusion assemblies. The multiple extrusion assemblies are arranged side by side, each extrusion assembly comprises an extrusion gear set, and the extrusion gear sets are used for extruding consumables in the first direction; the driving assembly comprises a gear driving part, and the gear driving part is constructed to be capable of being meshed with one of the extrusion gear sets; the switching assembly comprises an abutting part, the abutting part is arranged on the sides, away from the gear driving part, of the multiple extrusion assemblies, and the abutting part is configured to abut against one extrusion assembly so that the extrusion gear set corresponding to the extrusion assembly can move in the first direction, and therefore the extrusion gear set can be meshed with the gear driving part.

Description

Technical Field

[0001] The present application relates to the field of 3D printing, and in particular to a multi-consumable extrusion printing device 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] Traditional two-color printing can no longer meet the needs of current consumers, and multi-color printing technology has begun to emerge. Most existing 3D printing devices can print in multiple colors or multiple materials. When the color or material of the consumables needs to be changed, one way is to change the material manually, and the other way is to equip a corresponding number of motors to control the delivery of the consumables of the corresponding color or material, which has problems such as complex structure and large space occupation.

[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, the embodiments of the present application provide a multi-consumable material extrusion printing device and a 3D printing device using the same.

[0006] An embodiment of the present application provides a multi-consumable material extrusion printing device, which includes a driving component, a switching component and multiple extrusion components; the multiple extrusion components are arranged side by side, each of the extrusion components includes an extrusion gear group, and the extrusion gear group is used to extrude consumables in a first direction; the driving component includes a gear driving part, and the gear driving part is constructed to be able to engage with one of the extrusion gear groups; the switching component includes a supporting part, and the supporting part is arranged on a side of the multiple extrusion components away from the gear driving part, and the supporting part is configured to abut against one of the extrusion components so that the extrusion gear group corresponding to the extrusion component moves in the first direction, thereby engaging with the gear driving part.

[0007] In one embodiment, a plurality of the extrusion assemblies are arranged side by side along a second direction, the gear driving portion comprises driving teeth, the driving teeth are extended along the second direction, and the abutting portion is configured to be movable along the second direction.

[0008] In one embodiment, the switching assembly also includes a first driving portion, a transmission rod and a guide rod, the transmission rod and the guide rod extend along the second direction and are arranged at intervals, the supporting portion is sleeved on the outside of the transmission rod and the guide rod, the supporting portion is transmission-connected to the first driving portion through the transmission rod, and the supporting portion is slidingly connected to the guide rod.

[0009] In one embodiment, the transmission rod and the guide rod are arranged in the same layer along the first direction, each of the extrusion gear sets is located between the supporting portion and the gear driving portion along the first direction, and the extrusion assembly is arranged on the same side of the gear driving portion along the second direction.

[0010] In one embodiment, the abutting portion is provided with a protruding end on a side close to the extrusion assembly, and the protruding end is configured to move with the abutting portion to selectively abut one of the extrusion assemblies.

[0011] In one embodiment, each of the extrusion gear sets includes a first extrusion wheel and a second extrusion wheel, the first extrusion wheel and the second extrusion wheel are arranged side by side along a third direction, and the second extrusion wheel is located on the side of the first extrusion wheel away from the gear driving part along the third direction.

[0012] In one embodiment, each of the first extrusion wheels includes a first transmission tooth and a first guide tooth that are arranged side by side along the second direction and can rotate synchronously, and each of the second extrusion wheels includes a second transmission tooth and a second guide tooth that are arranged side by side along the second direction, the first guide tooth and the second guide tooth are arranged at intervals, the first transmission tooth is meshed with the second transmission tooth, and the first transmission tooth is in detachable contact with the gear driving part.

[0013] In one embodiment, the multi-consumable material extrusion printing device also includes a limit frame, and the plurality of extrusion components are connected to the limit frame, and each of the extrusion components includes a reset member, which is connected to the limit frame, and the reset member is constructed to drive the extrusion component to reset along the first direction.

[0014] In one embodiment, the multi-consumable material extrusion printing device also includes a limit frame, which is provided with a plurality of through holes, and the plurality of hot ends corresponding to the plurality of extrusion components are respectively arranged corresponding to the plurality of through holes, and the end of each hot end away from the extrusion component passes through one of the through holes.

[0015] An embodiment of the present application also provides a 3D printing device, which includes a support frame, a molding substrate, and a multi-consumable extrusion printing device as described in any one of the aforementioned embodiments, wherein the multi-consumable extrusion printing device is movably connected to the support frame to adjust the position of the multi-consumable extrusion printing device relative to the molding substrate.

[0016] It can be understood that in the multi-consumable extrusion printing device of the present application, multiple extrusion components can be used to extrude multiple consumables. The switching component, the driving component and the multiple extrusion components cooperate with each other, and the abutting portion can selectively abut against one of the multiple extrusion components, and push the one extrusion component along the first direction until the extrusion gear set contacts and meshes with the gear driving portion, and the gear driving portion drives the extrusion gear set to start rotating to extrude the consumables. The multi-consumable extrusion printing device of the present application has a compact and reasonable structure and high space utilization; the 3D printing equipment of the present application uses the multi-consumable extrusion printing device, which also has the advantages of compact and reasonable structure and high space utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A three-dimensional schematic diagram of a multi-consumable extrusion printing device provided in an embodiment of the present application at one angle.

[0018] Figure 2 A three-dimensional schematic diagram of the multi-consumable extrusion printing device provided in an embodiment of the present application from another angle.

[0019] Figure 3 A three-dimensional schematic diagram of the multi-consumable material extrusion printing device provided in an embodiment of the present application from another angle.

[0020] Figure 4 A schematic three-dimensional exploded diagram of a multi-consumable extrusion printing device provided in an embodiment of the present application.

[0021] Figure 5 A partial three-dimensional schematic diagram of a multi-consumable extrusion printing device provided in an embodiment of the present application.

[0022] Figure 6 A schematic diagram of a 3D printing device provided in an embodiment of the present application.

[0023] Main component symbols

[0024] Multi-filament extrusion printing device 10

[0025] Switching Components 11

[0026] The supporting part 111

[0027] Through hole 1110

[0028] Raised end 1111

[0029] Transmission rod 112

[0030] Guide rod 113

[0031] The first driving unit 114

[0032] Drive assembly 12

[0033] Gear drive unit 121

[0034] Drive gear 1210

[0035] The second driving unit 122

[0036] Gear transmission structure 123

[0037] Extrusion component 13

[0038] Transmission channel 130

[0039] Transmission unit 131

[0040] Housing 1311

[0041] Accommodating chamber 1312

[0042] Opening 1313

[0043] Shaft 1314

[0044] Extrusion gear set 1315

[0045] First extrusion wheel 1316

[0046] First transmission gear 13161

[0047] First guide tooth 13162

[0048] Second extrusion wheel 1317

[0049] Second transmission gear 13171

[0050] Second guide tooth 13172

[0051] Reset unit 133

[0052] Hot End 18

[0053] Pipe 181

[0054] Nozzle 182

[0055] Thermal coupling functional structure 183

[0056] Bracket 14

[0057] First connecting plate 141

[0058] The second connecting plate 142

[0059] Air cooling component 15

[0060] The first air cooling unit 151

[0061] Second air cooling unit 152

[0062] Limiting frame 16

[0063] Through hole 160

[0064] Mounting slot 161

[0065] First direction Z

[0066] Second direction X

[0067] The third direction Y

[0068] 3D printing equipment 2

[0069] Support frame 21

[0070] Molding base plate 22

[0071] The following specific implementation methods will further illustrate the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0072] The following description will refer to the accompanying drawings to more fully describe the content of the present application. The accompanying drawings show exemplary embodiments of the present application. However, the present application can be implemented in many different forms and should not be interpreted as being 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 represent identical or similar components. The terms used herein are only used for the purpose of describing specific exemplary embodiments and are not intended to limit the present application. As used herein, unless the context clearly indicates otherwise, the singular forms "one", "an" and "the" are intended to also include plural forms. In addition, when used herein, "including" and / or "comprising" and / or "having", integers, steps, operations, components and / or components, but do not exclude the presence or addition of one or more other features, regions, integers, steps, operations, components and / or their groups. Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meanings as those generally understood by ordinary technicians in the field to which the present application belongs. Furthermore, unless explicitly defined herein, terms such as those defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the relevant art and the content of this application, and will not be interpreted as idealized or overly formal meanings.

[0073] Generally, traditional two-color printing can no longer meet the needs of current consumers. Multi-color printing technology has begun to emerge. Most existing 3D printing devices can achieve printing in multiple colors or multiple materials. When the color or material of consumables needs to be changed, one way is to change the material manually, and the other way is to equip a corresponding number of motors to control the delivery of consumables of corresponding colors or materials, which has problems such as complex structure and large space occupation. How to solve the above problems is what skilled technicians need to consider.

[0074] Correspondingly, a multi-consumable material extrusion printing device includes a driving component, a switching component and multiple extrusion components; the multiple extrusion components are arranged side by side, each of the extrusion components includes an extrusion gear group, and the extrusion gear group is used to extrude the consumable material in a first direction; the driving component includes a gear driving part, and the gear driving part is constructed to be able to engage with one of the extrusion gear groups; the switching component includes a supporting part, and the supporting part is arranged on a side of the multiple extrusion components away from the gear driving part, and the supporting part is configured to abut against one of the extrusion components so that the extrusion gear group corresponding to the extrusion component moves in the first direction, thereby engaging with the gear driving part.

[0075] Furthermore, in the multi-consumable extrusion printing device of the present application, multiple extrusion components can be used to extrude multiple consumables. The switching component, the driving component and the multiple extrusion components cooperate with each other, and the abutting portion can selectively abut against one of the multiple extrusion components, and push the one extrusion component along the first direction until the extrusion gear set contacts and meshes with the gear driving portion, and the gear driving portion drives the extrusion gear set to start rotating to extrude the consumables. The multi-consumable extrusion printing device of the present application has a compact and reasonable structure and high space utilization; the 3D printing equipment of the present application uses the multi-consumable extrusion printing device, which also has the advantages of compact and reasonable structure and high space utilization.

[0076] Those skilled in the art will understand that "3D printing" refers to a technology that uses a digital model file as the basis, using powdered metal or plastic and other bondable materials to construct objects by printing layer by layer.

[0077] Those skilled in the art will appreciate that “consumables” refer to thermoplastic materials that are constructed in the form of strips, and the consumables are usually solid at room temperature.

[0078] 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.

[0079] The specific implementation methods of the present application are further described in detail below with reference to the accompanying drawings.

[0080] like Figures 1 to 5 As shown, the embodiment of the present application provides a multi-consumable extrusion printing device 10, including a switching component 11, a driving component 12, and a plurality of extrusion components 13. Each of the plurality of extrusion components 13 can extrude a consumable (not shown), the driving component 12 and the plurality of extrusion components 13 are configured to be spaced apart from the plurality of extrusion components 13, and the switching component 11 is arranged to be movable compared to the plurality of extrusion components 13, and pushes one of the plurality of extrusion components 13 to contact and drive the connection with the driving component 12, so as to realize the consumable extrusion of the extrusion component 13.

[0081] In one embodiment, a plurality of extrusion assemblies 13 are arranged side by side, and the extrusion assemblies 13 include an extrusion gear set 1315, and the extrusion gear set 1315 is used to extrude consumables in a first direction Z. The driving assembly 12 includes a gear driving portion 121, and the gear driving portion 121 is configured to be able to mesh with one of the extrusion gear sets 1315. The switching assembly 11 includes a butting portion 111, which is arranged on a side of the plurality of extrusion assemblies 13 away from the gear driving portion 121, and the butting portion 111 is configured to abut against one of the extrusion assemblies 13, so that the extrusion gear set 1315 corresponding to the extrusion assembly 13 moves in the first direction Z, thereby meshing with the gear driving portion 121.

[0082] It can be understood that in the multi-consumable extrusion printing device 10 of the present application, the multiple extrusion components 13 can be used to extrude multiple consumables. The switching component 11, the driving component 12 and the multiple extrusion components 13 cooperate with each other, and the abutting portion 111 can selectively abut against one of the multiple extrusion components 13, and push the one extrusion component 13 along the first direction Z until the extrusion gear set 1315 contacts and meshes with the gear driving portion 121, and the gear driving portion 121 drives the extrusion gear set 1315 to start rotating to extrude the consumables. The multi-consumable extrusion printing device 10 of the present application has a compact and reasonable structure and high space utilization.

[0083] In order to facilitate subsequent understanding, the embodiment of the present application defines the intersecting second direction X, third direction Y and first direction Z for description. The second direction X, third direction Y and first direction Z can be three non-parallel linear directions in space; further, the second direction X, third direction Y and first direction Z can be three mutually perpendicular directions in a three-dimensional coordinate system (three-dimensional Cartesian coordinate system). In the subsequent embodiments, the second direction X is the X-axis direction of the coordinate axis of the three-dimensional coordinate system, the third direction Y is the Y-axis direction of the coordinate axis of the three-dimensional coordinate system, and the first direction Z is the Z-axis direction of the coordinate axis of the three-dimensional coordinate system.

[0084] In one embodiment, a plurality of extrusion assemblies 13 are arranged side by side along the second direction X, the gear driving portion 121 includes driving teeth 1210 , the driving teeth 1210 are extended along the second direction X, and the abutting portion 111 is configured to be movable along the second direction X.

[0085] It can be understood that the abutting portion 111 can move along the second direction X, thereby contacting one of the multiple extrusion assemblies 13 arranged side by side along the second direction X, and pushing the extrusion assembly 13 to contact the gear driving portion 121, so that the extrusion gear set 1315 is meshed with the driving tooth 1210. The driving tooth 1210 is extended along the second direction X, so that any one of the multiple extrusion assemblies 13 can be meshed with the driving tooth 1210 after being pushed by the abutting portion 111, thereby realizing the switching of the extrusion assembly 13.

[0086] In this embodiment, the driving output structure in the switching component 11 and the driving component 12 is located on the side of the gear driving unit 121 along the third direction Y away from the multiple extrusion components 13, and other components (such as air cooling) in the multi-consumable extrusion printing device 10 can also be arranged on the side of the gear driving unit 121 along the third direction Y away from the multiple extrusion components 13, so as to avoid interference of other structures with the multiple extrusion components 13 and improve space utilization efficiency.

[0087] In one embodiment, the switching assembly 11 further includes a first driving portion 114, a transmission rod 112 and a guide rod 113. The transmission rod 112 is transmission-connected to the first driving portion 114, and the abutting portion 111 is transmission-connected to the first driving portion 114 through the transmission rod 112. The transmission rod 112 and the guide rod 113 extend along the second direction X and are arranged at intervals. The abutting portion 111 is sleeved on the outside of the transmission rod 112 and the guide rod 113, and the abutting portion 111 is slidably connected to the guide rod 113.

[0088] In this embodiment, the abutting portion 111 is provided with two parallel through holes 1110, and the transmission rod 112 and the guide rod 113 pass through the abutting portion 111 through the two through holes 1110 respectively. The inner wall of the through hole 1110 for the transmission rod 112 to pass through may be provided with an internal thread (not shown in the figure), and the outer side of the transmission rod 112 may be provided with an external thread (not shown in the figure), and the first driving portion 114 drives the transmission rod 112 to rotate to drive the abutting portion 111 to move along the second direction X. The inner wall of the through hole 1110 for the guide rod 113 to pass through may have a smooth inner surface, and the guide rod 113 may also have a smooth outer surface. The guide rod 113 is extended along the second direction X to guide the abutting portion 111. The side of the abutting portion 111 without the through hole 1110 is a raised end 1111 with an arc surface, and the raised end 1111 is used to abut the surface of the extrusion assembly 13. In one embodiment, the abutting portion 111 is provided with a protruding end 1111 on a side close to the extrusion assembly 13 . The protruding end 1111 is configured to move along with the abutting portion 111 to selectively abut against one of the extrusion assemblies 13 .

[0089] In one embodiment, the height of the protruding portion of the abutting portion 111 on the side of the guide rod 113 toward the extrusion assembly 13 is greater than the gap between the extrusion assembly 13 and the guide rod 113. It can be understood that the multiple extrusion assemblies 13 arranged side by side are spaced from the guide rod 113 when not squeezed by the abutting portion 111, but the spacing is smaller than the protruding height of the abutting portion 111 (or understood as the protruding height of the protruding end 1111), so that after the abutting portion 111 abuts against the corresponding extrusion assembly 13, the extrusion assembly 13 is pushed out by the height difference, so that the extrusion assembly 13 is pushed to contact with the gear driving portion 121.

[0090] In one embodiment, the multi-consumable extrusion printing device 10 further includes a bracket 14, and the bracket 14 includes a first connecting plate 141 and a second connecting plate 142 spaced apart along the second direction X. The transmission rod 112, the guide rod 113, and the gear driving part 121 are all disposed between the first connecting plate 141 and the second connecting plate 142, and their ends are fixed by the first connecting plate 141 and the second connecting plate 142.

[0091] In one embodiment, the driving assembly 12 further includes a second driving portion 122, and the second driving portion 122 is connected to the gear driving portion 121. The first driving portion 114 is connected to the first connecting plate 141, and the second driving portion 122 is connected to the second connecting plate 142. It can be understood that the first driving portion 114 and the second driving portion 122 can both be motors, the first driving portion 114 and the transmission rod 112 can be directly connected, and the second driving portion 122 and the gear driving portion 121 can be connected to each other through a gear transmission structure 123. The gear transmission structure 123 can include, for example, a pair of helical gears (not shown), one of the pair of helical gears is connected to the second driving portion 122, and the other of the pair of helical gears is connected to the gear driving portion 121.

[0092] In other embodiments, the gear driving unit 121 may also be driven by other driving methods, for example, the gear driving unit 121 may be driven to move by impact, pushing, etc.

[0093] In one embodiment, the transmission rod 112 and the guide rod 113 are disposed in the same layer along the first direction Z. Each extrusion gear set 1315 is located between the abutment portion 111 and the gear driving portion 121 along the first direction Z, and the plurality of extrusion assemblies 13 are disposed on the same side of the gear driving portion 121 along the second direction X.

[0094] In this embodiment, multiple extrusion components 13 are arranged side by side along the second direction X, multiple extrusion components 13 are at the same or very close distance from the gear driving part 121 along the third direction Y, the gear driving part 121 has the same outer diameter, and multiple extrusion components 13 are at the same or very close distance from the gear driving part 121 along the first direction Z.

[0095] In this embodiment, the transmission rod 112 and the guide rod 113 are arranged in the same layer along a first direction Z, which means that the transmission rod 112 and the guide rod 113 are in the "same layer" along the first direction Z in terms of spatial geometric relationship, that is, the transmission rod 112 and the guide rod 113 have the same spacing along the first direction Z compared to the same reference object.

[0096] It can be understood that when a specified consumable is required to be extruded, the switching component 11 is controlled to move the abutting portion 111 to the corresponding extrusion component 13 along the second direction X, and the protruding end 1111 of the abutting portion 111 protruding toward the extrusion component 13 along the first direction Z abuts the extrusion component 13. Under the push of the abutting portion 111, the extrusion component 13 approaches the gear driving portion 121 along the first direction Z, and one of the extrusion gear sets 1315 contacts and meshes with the gear driving portion 121, and the consumable is extruded. At the same time, the extrusion components 13 that are not abutted by the abutting portion 111 maintain a spaced-apart state with the gear driving portion 121, and the extrusion gear sets 1315 in these extrusion components 13 do not mesh with the gear driving portion 121 and thus do not rotate, and thus do not extrude the consumable.

[0097] In one embodiment, the extrusion assembly 13 includes a transmission part 131, and the extrusion assembly 13 is connected and matched with the hot end 18, and the hot end 18 is located on the side of the transmission part 131 away from the driving assembly 12. The extrusion assembly 13 is provided with a transmission channel 130 for transmitting consumables, and the transmission channel 130 sequentially passes through the transmission part 131 and the hot end 18, and the transmission part 131 includes an extrusion gear set 1315, and the extrusion gear set 1315 clamps the transmission channel 130.

[0098] It can be understood that the transmission part 131 is used to mesh with the gear driving part 121, further driving the extrusion gear set 1315 to rotate and push the consumables to the hot end 18. The hot end 18 includes common functional units such as a throat 181, a nozzle 182, and a thermal coupling functional structure 183, which are used to further process the consumables and finally extrude the molten consumables.

[0099] In one embodiment, the transmission part 131 includes a housing 1311, and the extrusion gear set 1315 is received in the housing 1311 and is rotatably connected to the housing 1311. An opening 1313 is provided on the side of the housing 1311, and one side of the extrusion gear set 1315 away from the other is exposed through the opening 1313 for detachably contacting the gear driving part 121.

[0100] In this embodiment, a housing 1311 is provided with a housing chamber 1312, which is communicated with an opening 1313. Two parallel rotating shafts 1314 are also provided in the housing 1312, which are fixed to the housing 1311. Two of the extrusion gear sets 1315 are respectively sleeved on the two rotating shafts 1314, and the extrusion gear sets 1315 are always in a meshing state. The opening 1313 is located on the side of the housing 1311 facing the gear driving unit 121, and one of the extrusion gear sets 1315 located on this side can be in contact with the gear driving unit 121 to achieve meshing.

[0101] In one embodiment, each extrusion gear set 1315 includes a first extrusion wheel 1316 and a second extrusion wheel 1317. The first extrusion wheel 1316 and the second extrusion wheel 1317 are arranged side by side along a third direction Y, and the second extrusion wheel 1317 is located along the third direction Y on the side of the first extrusion wheel 1316 away from the gear driving unit 121.

[0102] In one embodiment, each first extrusion wheel 1316 includes a first transmission tooth 13161 and a first guide tooth 13162 arranged side by side along the second direction X and capable of synchronous rotation, and each second extrusion wheel 1317 includes a second transmission tooth 13171 and a second guide tooth 13172 arranged side by side along the second direction X. The first guide tooth 13162 and the second guide tooth 13172 are arranged at intervals, the transmission channel 130 is arranged between the first guide tooth 13162 and the second guide tooth 13172, the first transmission tooth 13161 is meshed with the second transmission tooth 13171, and the first transmission tooth 13161 is in detachable contact with the gear driving part 121.

[0103] It can be understood that in an extrusion component 13, the first transmission tooth 13161 and the second transmission tooth 13171 are respectively protruded and extended outwardly compared with the axis of the first extrusion wheel 1316 and the second extrusion wheel 1317, so that the first transmission tooth 13161 and the second transmission tooth 13171 remain engaged in the assembled state; the first guide tooth 13162 and the second guide tooth 13172 are respectively arranged to one side of the axis of the first extrusion wheel 1316 and the second extrusion wheel 1317, so that there is a gap between the first guide tooth 13162 and the second guide tooth 13172 to accommodate the consumables, and the grooves of the first guide tooth 13162 and the second guide tooth 13172 cooperate to guide the consumables. When consumables are provided in the transmission channel 130, the consumables will be clamped by the first guide teeth 13162 and the second guide teeth 13172. When the first extrusion wheel 1316 starts to rotate driven by the gear driving unit 121, the second extrusion wheel 1317 also starts to rotate by meshing with the first extrusion wheel 1316. The first guide teeth 13162 and the second guide teeth 13172 cooperate to push the consumables.

[0104] In one embodiment, the multi-consumable extrusion printing device 10 further includes a limit frame 16. The limit frame 16 is provided with a plurality of through holes 160, and the plurality of hot ends 18 corresponding to the plurality of extrusion components 13 are respectively provided corresponding to the plurality of through holes 160, and the end of each hot end 18 away from the extrusion component 13 is provided through a through hole 160.

[0105] In this embodiment, one side of the limiting frame 16 is connected to the bracket 14, and a plurality of through holes 160 are provided on the other side spaced apart along the first direction Z. The plurality of through holes 160 are spaced apart along the second direction X, and each through hole 160 corresponds to an extrusion assembly 13. When the extrusion assembly 13 is abutted by the abutting portion 111, the hot end 18 extends out along the first direction Z under the guidance of the hole wall of the through hole 160 to extrude the consumables.

[0106] It can be understood that the multiple extrusion assemblies 13 are movably connected to the limiting frame 16, and the multiple extrusion assemblies 13 can move along the first direction Z compared to the limiting frame 16. The connection method of the extrusion assembly 13 and the limiting frame 16 can be various. For example, the limiting frame 16 is provided with an assembly groove 161 extending along the first direction Z, and the extrusion assembly 13 has a connecting block (not shown) extending along the first direction Z, and the connecting block is arranged in the groove. The bottom end of the groove away from the supporting portion 111 along the first direction Z can be provided with a spring in a compressed state (not shown), and the spring abuts against the inner wall of the limiting frame 16 and the connecting block for resetting the extrusion assembly 13; the connection method of the extrusion assembly 13 and the limiting frame 16 can also be other forms, which will not be repeated here.

[0107] In one embodiment, the extrusion assembly 13 further includes a reset portion 133, which may be a magnetic reset structure; specifically, the reset portion 133 includes two bar-shaped permanent magnets, one of which is connected to the limit frame 16, and the other is connected to the housing 1311 of the extrusion assembly 13. The two permanent magnets of the reset portion 133 are both extended along the first direction Z, and the two permanent magnets are constructed so that the opposite poles are arranged side by side along the first direction Z. When the extrusion assembly 13 is not pushed by the protruding end 1111 along the first direction Z, the reset portion 133 is arranged in such a manner that the N pole of one permanent magnet corresponds to the S pole of the other permanent magnet, and the S pole of one permanent magnet corresponds to the N pole of the other permanent magnet; when the extrusion assembly 13 is pushed by the protruding end 1111 along the first direction Z to mesh with the gear driving portion 121, the reset portion 133 is arranged in such a manner that the S pole of one permanent magnet corresponds to the S pole of the other permanent magnet, and the N poles of the two permanent magnets are staggered. Those skilled in the art will appreciate that, when the protruding end 1111 abutting against the extrusion component 13 is removed, the extrusion component 13 will be reset along the first direction Z under the push of the magnetic reset force of the reset portion 133 .

[0108] In one embodiment, the multi-consumable extrusion printing device 10 further includes an air cooling component 15, and the air cooling component 15 is connected to the limiting frame 16. The air cooling component 15 may include a first air cooling part 151 for cooling the nozzle 182, and the air cooling component 15 further includes a second air cooling part 152 for cooling the thermal coupling functional structure 183, the first air cooling part 151 is arranged on the side of the limiting frame 16 away from the hot end 18 along the third direction Y, and the second air cooling part 152 is arranged side by side with the multiple extrusion components 13 along the second direction X.

[0109] Further integration Figure 6As shown, the embodiment of the present application further provides a 3D printing device 2, comprising a support frame 21, a molding substrate 22, and the above-mentioned multi-consumable extrusion printing device 10. The molding substrate 22 is located below the multi-consumable extrusion printing device 10. The multi-consumable extrusion printing device 10 is movably connected to the support frame 21, and the multi-consumable extrusion printing device 10 can slide relative to the support frame 21 along the second direction X, the third direction Y, or the first direction Z to adjust the position of the multi-consumable extrusion printing device 10 relative to the molding substrate 22.

[0110] Furthermore, the 3D printing device 2 also includes a feeding assembly (not shown in the figure), which is connected to the feed hole (not shown in the figure) of the multi-consumable extrusion printing device 10 through a pipe. The feeding assembly can be installed at the proximal end or distal end of the multi-consumable extrusion printing device 10 to achieve proximal or distal feeding of the 3D printing device 2. The 3D printing device 2 of the present application is applied with the multi-consumable extrusion printing device 10 of the embodiment of the present application, which also has the advantages of compact and reasonable structure and high space utilization.

[0111] In the above, the specific implementation of the present application is described with reference to the accompanying drawings. However, those skilled in the art will appreciate that various changes and substitutions may be made to the specific implementation of the present application without departing from the spirit and scope of the present application. These changes and substitutions are all within the scope defined by the present application.

Claims

1. A multi-consumable extrusion printing device, characterized in that: include: A plurality of extrusion assemblies, wherein the plurality of extrusion assemblies are arranged side by side, each of the extrusion assemblies comprises an extrusion gear set, and the extrusion gear set is used to extrude the consumable material in a first direction; a drive assembly including a gear drive configured to engage one of the extrusion gear sets; The switching component includes a supporting portion, which is arranged on a side of the multiple extrusion components away from the gear driving portion, and the supporting portion is configured to abut against one of the extrusion components so that the extrusion gear set corresponding to the extrusion component moves in the first direction, thereby engaging with the gear driving portion.

2. The multi-consumable material extrusion printing device according to claim 1, characterized in that: A plurality of the extrusion assemblies are arranged side by side along a second direction, the gear driving portion comprises driving teeth, the driving teeth are extended along the second direction, and the abutting portion is configured to be movable along the second direction.

3. The multi-consumable material extrusion printing device according to claim 2, characterized in that: The switching assembly also includes a first driving part, a transmission rod and a guide rod, the transmission rod and the guide rod extend along the second direction and are arranged at intervals, the supporting part is sleeved on the outside of the transmission rod and the guide rod, the supporting part is transmission-connected to the first driving part through the transmission rod, and the supporting part is slidingly connected to the guide rod.

4. The multi-consumable material extrusion printing device according to claim 3, characterized in that: The transmission rod and the guide rod are arranged in the same layer along the first direction, each of the extrusion gear sets is located between the supporting portion and the gear driving portion along the first direction, and the extrusion assembly is arranged on the same side of the gear driving portion along the second direction.

5. The multi-consumable material extrusion printing device according to claim 3, characterized in that: The abutting portion is provided with a protruding end on a side close to the extrusion assembly, and the protruding end is configured to move following the abutting portion to selectively abut against one of the extrusion assemblies.

6. The multi-consumable material extrusion printing device according to claim 2, characterized in that: Each of the extrusion gear sets includes a first extrusion wheel and a second extrusion wheel. The first extrusion wheel and the second extrusion wheel are arranged side by side along a third direction. The second extrusion wheel is located on the side of the first extrusion wheel away from the gear driving part along the third direction.

7. The multi-consumable material extrusion printing device according to claim 6, characterized in that: Each of the first extrusion wheels includes a first transmission tooth and a first guide tooth arranged side by side along the second direction and capable of synchronously rotating, and each of the second extrusion wheels includes a second transmission tooth and a second guide tooth arranged side by side along the second direction, the first guide tooth and the second guide tooth are arranged at intervals, the first transmission tooth is meshed with the second transmission tooth, and the first transmission tooth is in detachable contact with the gear driving part.

8. The multi-consumable material extrusion printing device according to claim 1, characterized in that: The multi-consumable material extrusion printing device also includes a limit frame, and the multiple extrusion components are connected to the limit frame. Each extrusion component includes a reset member, which is connected to the limit frame and is constructed to drive the extrusion component to reset along the first direction.

9. The multi-consumable material extrusion printing device according to claim 1, characterized in that: The multi-consumable material extrusion printing device also includes a limit frame, which is provided with a plurality of through holes. The plurality of hot ends corresponding to the plurality of extrusion components are respectively arranged corresponding to the plurality of through holes, and the end of each hot end away from the extrusion component passes through one of the through holes.

10. A 3D printing device, characterized in that: It comprises a support frame, a molding substrate and a multi-consumable extrusion printing device as described in any one of claims 1 to 9, wherein the multi-consumable extrusion printing device is movably connected to the support frame to adjust the position of the multi-consumable extrusion printing device relative to the molding substrate.

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