Printing head device and 3D printing equipment applying same

Abstract

The embodiment of the invention provides a printing head device and 3D printing equipment applying the same. The printing head device is provided with a conveying channel, the conveying channel is used for conveying consumables, and the printing head device further comprises a first support and a material cutting assembly. The transmission channel penetrates through the first support in the first direction. The material cutting assembly comprises a first moving part, a second moving part, a first reset mechanism and a material cutting part, the first moving part is rotationally connected with the first support, the second moving part is movably connected with the first support, the first reset mechanism is connected with the second moving part and the first support, and the material cutting part is connected with the second moving part. The first moving part is configured to enable the second moving part to move between a first position and a second position; and when moving from the first position to the second position, the second moving part drives the material cutting part to enter the conveying channel from the second direction, the first direction intersects with the second direction, and the first reset mechanism provides reset force enabling the second moving part to return to the first position through magnetic force and / or elastic force.

Description

Technical Field

[0001] This application relates to the field of 3D printing, and more particularly to a printhead device and a 3D printing apparatus using the same. Background Technology

[0002] 3D printing is a rapid prototyping technology that uses digital model files as a basis and employs bondable materials such as special waxes, powdered metals, or plastics to create three-dimensional objects by printing layers of material. Fused deposition modeling (FDM) is one of the main 3D printing technologies. This technology involves heating and melting a hot-melt filament, extruding it from a nozzle, and depositing it onto a forming platform or a previously solidified layer of material to ultimately create the physical object. During the 3D printing process, situations may arise where filament needs to be replaced; a common method is to cut and replace the filament. Optimizing this process is a question that those skilled in the art need to consider. Summary of the Invention

[0003] To address the problems in the prior art, embodiments of this application provide a printhead device and a 3D printing apparatus using the same.

[0004] This application provides a printhead device having a transmission channel for transmitting consumables, and the printhead device further includes:

[0005] A first support, wherein the transmission channel passes through the first support along a first direction;

[0006] A material cutting component includes a first moving part, a second moving part, a first reset mechanism, and a material cutting component. The first moving part is rotatably connected to the first support, the second moving part is movably connected to the first support, the first reset mechanism connects the second moving part and the first support, and the material cutting component is connected to the second moving part.

[0007] Wherein, the first moving member is configured to move the second moving member between a first position and a second position; when moving from the first position to the second position, the second moving member drives the material breaking member to enter the transmission channel from a second direction, the first direction intersecting the second direction, and the first reset mechanism provides a reset force to return the second moving member to the first position through magnetic force and / or elastic force.

[0008] In one embodiment, the first reset mechanism includes:

[0009] A first magnetic component, which is connected to the second moving component;

[0010] A second magnetic component is connected to the first bracket.

[0011] The first magnetic element and the second magnetic element are movably disposed from each other, and the first magnetic element and the second magnetic element are configured such that when the material breaking element enters the transmission channel, the repulsive force between the first magnetic element and the second magnetic element is greater than the attractive force between the first magnetic element and the second magnetic element.

[0012] In one embodiment, the second moving member is configured to move along the second direction to cause the material breaking member to enter or exit the transmission channel;

[0013] The first magnetic component and the second magnetic component are arranged side by side along the second direction;

[0014] The first magnetic element includes a first magnetic pole and a second magnetic pole, wherein the first magnetic pole is disposed closer to the transmission channel along the second direction than the second magnetic pole;

[0015] The second magnetic element includes a third magnetic pole and a fourth magnetic pole, wherein the third magnetic pole is disposed closer to the transmission channel along the second direction than the fourth magnetic pole;

[0016] Wherein, the first magnetic pole and the third magnetic pole are magnetic poles of the same name, and the second magnetic pole and the fourth magnetic pole are magnetic poles of the same name.

[0017] In one embodiment, the first reset mechanism is disposed between the first moving member and the material breaking member;

[0018] The first magnetic pole and the second magnetic pole are opposite magnetic poles, and the third magnetic pole and the fourth magnetic pole are opposite magnetic poles;

[0019] The first magnetic element and the second magnetic element are configured such that when the material breaking element enters the transmission channel, the first magnetic pole and the third magnetic pole are arranged side by side along the second direction, and / or the second magnetic pole and the fourth magnetic pole are arranged side by side along the second direction.

[0020] In one embodiment, the first bracket has an inner end, which is spaced apart from the transmission channel;

[0021] The second moving member includes a first receiving hole, which is located on the side of the second moving member facing the inner end, and the first magnetic member is received in the first receiving hole;

[0022] The inner end is provided with a second receiving hole facing the second moving part, and the second magnetic part is received in the second receiving hole.

[0023] In one embodiment, the first reset mechanism drives the second moving member to reset via elastic force, the second moving member being configured to move along the second direction, and the first reset mechanism includes:

[0024] A first elastic element is sandwiched between the second moving element and the first support along the second direction. The first elastic element is configured to be in a compressed state when the material breaking element enters the transmission channel.

[0025] In one embodiment, the first support has a bottom end, and the first support further includes a guide portion protruding from the bottom end, the transmission channel is disposed through the guide portion along the first direction, and the second moving member has a guide groove located between the material breaking member and the bottom end;

[0026] One end of the first elastic member is received in the guide groove, and the other end of the first elastic member extends out of the guide groove and abuts against the guide portion.

[0027] In one embodiment, the guide portion has a feed groove along the second direction, the feed groove is connected to the transmission channel, and the end of the material cutter away from the second moving member is configured to enter the transmission channel via the feed groove.

[0028] In one embodiment, the second moving member is configured to move along the second direction;

[0029] The first support has a bottom end, and the second moving component is disposed at the bottom end;

[0030] The second moving member has a guide hole through it along the first direction, and a guide post is provided through the guide hole and passes through the bottom end and is fixedly connected to the first bracket. The guide post is configured to be received in the guide hole when the second moving member moves along the second direction.

[0031] In one embodiment, the second moving member includes a force-receiving end and a connecting end spaced apart along the second direction. The force-receiving end is configured to contact the first moving member, and the connecting end is configured to connect the material breaking member. The guide hole is located between the force-receiving end and the connecting end.

[0032] In one embodiment, the first moving member includes:

[0033] The first end is rotatably connected to the first bracket via a rotating shaft;

[0034] The second end is configured to be driven to rotate the first moving member along the axis of rotation;

[0035] The force-applying end is located between the first end and the second end, and is located on the side of the first moving member facing the second moving member and the transmission channel. The force-applying end is in contact with the second moving member and is used to push the second moving member.

[0036] In one embodiment, the printhead device further includes a second reset mechanism, which is a torsion spring. The second reset mechanism is sleeved on the rotating shaft and disposed between the rotating shaft and the first end. The second reset mechanism is configured to be in a compressed state when the broken piece invades the transmission channel.

[0037] This application also provides a 3D printing device, which includes a forming platform, a driving component, and a print head device as described in any of the foregoing embodiments, wherein the driving component drives the print head device to move relative to the forming platform.

[0038] Understandably, in the printhead device of this application, the first moving component is rotatably connected to the first support, enabling the first moving component to rotate relative to the first support under external force; the second moving component is connected to the material cut-off component and is positioned closer to the transmission channel than the first moving component, allowing the second moving component to be pushed by the first moving component and causing the material cut-off component to enter the transmission channel to cut off the consumable; the first reset mechanism is connected to the second moving component and the first support, and the first reset mechanism drives the second moving component to drive the material cut-off component out of the transmission channel through magnetic force and / or elastic force, thereby resetting the second moving component and the material cut-off component for subsequent processing. Attached Figure Description

[0039] Figure 1 This is a perspective view of the printhead device provided in an embodiment of this application.

[0040] Figure 2 for Figure 1 A cross-sectional view along the II-II direction.

[0041] Figure 3 A three-dimensional schematic diagram of the material cutting component of the printhead device provided in the embodiments of this application cooperating with the first bracket.

[0042] Figure 4 This is an exploded perspective view of the material cutting component of the printhead device provided in the embodiments of this application.

[0043] Figure 5 An exploded perspective view of the material cutting component of the printhead device provided in an embodiment of this application cooperating with the first support.

[0044] Figure 6 This is a partial exploded perspective view of a material cutting component provided in an embodiment of this application.

[0045] Figure 7 This is a cross-sectional schematic diagram of a printhead device provided in an embodiment of this application.

[0046] Figure 8 A perspective view of the material cutting component of the printhead device provided in another embodiment of this application cooperating with the first support.

[0047] Figure 9 A cross-sectional schematic diagram of the material cutting component of the printhead device provided in another embodiment of this application cooperating with the first support.

[0048] Figure 10 A partial perspective view of the cutting component of a printhead device provided in another embodiment of this application.

[0049] Figure 11 This is a perspective view of a printhead device provided in another embodiment of this application.

[0050] Figure 12 This is a three-dimensional schematic diagram of the 3D printing equipment provided in the embodiments of this application.

[0051] Explanation of main component symbols

[0052] Printhead assembly 10

[0053] Transmission Channel 100

[0054] First support 11

[0055] Inner end 111

[0056] Second receiving hole 1110

[0057] Bottom 112

[0058] Guiding section 1121

[0059] Infeed Groove 11210

[0060] Open structure 113

[0061] Material cutting component 12

[0062] First moving part 121

[0063] First end 1211

[0064] Second end 1212

[0065] Force application end 1213

[0066] Shaft 1214

[0067] Second moving part 122

[0068] First receiving hole 1220

[0069] Force-bearing end 1221

[0070] Connector 1222

[0071] Top surface 1223

[0072] Bottom 1224

[0073] Side view 1225

[0074] Guide hole 1226

[0075] First accommodating cavity 12261

[0076] Second accommodating cavity 12262

[0077] Guide column 1227

[0078] Screw 12271

[0079] Nut 12272

[0080] Guide groove 1228

[0081] Window 12281

[0082] First reset mechanism 123

[0083] First magnetic component 1231

[0084] First magnetic pole 12311

[0085] Second magnetic pole 12312

[0086] Second magnetic component 1232

[0087] Third magnetic pole 12321

[0088] Fourth magnetic pole 12322

[0089] First elastic element 1233

[0090] Second reset mechanism 124

[0091] Broken part 125

[0092] Blade 1251

[0093] Feeding component 13

[0094] Feeding drive component 131

[0095] Extrusion gear 132

[0096] Hot end 14

[0097] Heat dissipation section 141

[0098] Heating section 142

[0099] Nozzle section 143

[0100] Second direction T

[0101] First direction H

[0102] 3D printing equipment 1

[0103] Molding platform 16

[0104] Driver Component 18

[0105] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this application. Detailed Implementation

[0106] The following description will be given with reference to the accompanying drawings for a more complete description of the present application. The drawings illustrate exemplary embodiments of the present application. However, the present application may 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 terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to limit the present application. As used herein, the singular forms “a,” “an,” and “the” are intended to also include the plural forms unless the context clearly indicates otherwise. Furthermore, when used herein, “comprising” and / or “including” and / or “having,” integers, steps, operations, components, and / or components, but without excluding 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 pertains. Furthermore, unless explicitly defined herein, terms such as those defined in a general dictionary should be interpreted as having the same meaning as they have in the relevant technology and in the content of this application, and should not be interpreted as having an idealized or overly formal meaning.

[0107] Generally, 3D printing is a rapid prototyping technology that uses digital model files as a basis and employs bondable materials such as special waxes, powdered metals, or plastics to create three-dimensional objects by printing layers of material. Fused deposition modeling (FDM) is one of the main 3D printing technologies. This technology involves heating and melting a hot-melt filament, extruding it from a nozzle, and depositing it onto a forming platform or a previously solidified layer of material to ultimately create the physical object. During the 3D printing process, situations may arise where filament needs to be replaced; a common method is to cut and replace the filament. Optimizing this process is a consideration for those skilled in the art.

[0108] Correspondingly, this application provides a printhead device and a 3D printing device using the same. The printhead device has a transmission channel for transmitting consumables, and further includes a first support and a cutting-off component. The transmission channel passes through the first support along a first direction; the cutting-off component includes a first moving member, a second moving member, a first reset mechanism, and a cutting-off component. The first moving member is rotatably connected to the first support, the second moving member is movably connected to the first support, the first reset mechanism connects the second moving member to the first support, and the cutting-off component is connected to the second moving member. The first moving member is configured to move the second moving member between a first position and a second position; when moving from the first position to the second position, the second moving member drives the cutting-off component into the transmission channel from a second direction, where the first direction intersects the second direction. The first reset mechanism provides a reset force to return the second moving member to the first position via magnetic force and / or elastic force.

[0109] Furthermore, in the printhead device of this application, the first moving component is rotatably connected to the first support, enabling the first moving component to rotate relative to the first support under external force; the second moving component is connected to the material breaking component and is positioned closer to the transmission channel than the first moving component, allowing the second moving component to be pushed by the first moving component and causing the material breaking component to enter the transmission channel to cut off the consumable; the first reset mechanism is connected to the second moving component and the first support, and the first reset mechanism drives the second moving component to drive the material breaking component out of the transmission channel through magnetic force and / or elastic force, thereby resetting the second moving component and the material breaking component for subsequent processing.

[0110] As will be understood by those skilled in the art, “3D printing” refers to a technology that constructs objects by printing layer by layer using powdered metal or plastic and other bondable materials based on digital model files.

[0111] The following description, in conjunction with the accompanying drawings, illustrates exemplary embodiments. It should be noted that components depicted in the drawings are not necessarily shown to scale; and identical or similar components will be designated with the same or similar reference numerals or similar technical terms.

[0112] The specific embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0113] like Figures 1 to 2 As shown in the figure, this application embodiment provides a printhead device 10, which has a transmission channel 100 for transmitting consumables (not shown). The printhead device 10 also includes a first support 11, a feed-cutting assembly 12, a feeding assembly 13, and a hot end 14. The feed-cutting assembly 12, the feeding assembly 13, and the hot end 14 are respectively connected to the first support 11. The transmission channel 100 passes through the first support 11, the feeding assembly 13, and the hot end 14 along a first direction H. The feeding assembly 13 is used to transfer consumables, the hot end 14 is used to heat the consumables, and the feed-cutting assembly 12 is used to cut the consumables.

[0114] In one embodiment, the material breaking assembly 12 includes a first moving member 121, a second moving member 122, a first reset mechanism 123, and a material breaking member 125. The first moving member 121 is rotatably connected to a first support 11, the second moving member 122 is movably connected to the first support 11, the first reset mechanism 123 connects the second moving member 122 and the first support 11, and the material breaking member 125 is connected to the second moving member 122. The first moving member 121 is configured to move the second moving member 122 between a first position and a second position. When moving from the first position to the second position, the second moving member 122 drives the material breaking member 125 from the second direction T into the transmission channel 100. The first direction H intersects the second direction T. The first reset mechanism 123 provides a reset force through magnetic force and / or elastic force to return the second moving member 122 to the first position.

[0115] The first position is the position where the second moving part 122 is away from the transmission channel 100 and the material breaking part 125 is located outside the transmission channel 100, and the second position is the position where the second moving part 122 is close to the transmission channel 100 and the material breaking part 125 can be located inside the transmission channel 100.

[0116] Understandably, in the printhead device 10 of this application, the first moving member 121 is rotatably connected to the first support 11, so that the first moving member 121 can be driven by an external force to rotate relative to the first support 11; the second moving member 122 is connected to the material cut-off member 125 and is set closer to the transmission channel 100 than the first moving member 121. The second moving member 122 can be pushed by the first moving member 121 and drive the material cut-off member 125 to enter the transmission channel 100 to cut off the consumable; the first reset mechanism 123 is connected to the second moving member 122 and the first support 11. The first reset mechanism 123 drives the second moving member 122 to drive the material cut-off member 125 out of the transmission channel 100 through magnetic force and / or elastic force, so that the second moving member 122 and the material cut-off member 125 are reset, which is convenient for subsequent processing.

[0117] In this embodiment, the material cutting component 12 is disposed between the feeding component 13 and the hot end 14. The transmission channel 100 passes through the feeding component 13 and the hot end 14 sequentially along the first direction H. The material cutting element 125 of the material cutting component 12 enters or exits the area of ​​the transmission channel 100 between the feeding component 13 and the hot end 14 along the second direction T. In other embodiments, the material cutting component 12 may also be disposed on the side of the feeding component 13 away from the hot end 14.

[0118] Understandably, the first direction H can be the direction in which the transmission channel 100 extends, and the second direction T can be the direction intersecting the first direction H. In this embodiment, the transmission channel 100 is arranged in a straight line as an example. The first direction H corresponds to the axial direction of the transmission channel 100. In other embodiments, the first direction H can change according to the arrangement of the transmission channel 100, and different segments of the transmission channel 100 can have different directions or extension forms, which will not be elaborated here. In this embodiment, the second direction T is set perpendicular to the first direction H as an example. The second direction T corresponds to the radial direction of the transmission channel 100. In other embodiments, the second direction T can also intersect the first direction H at other angles, which will not be elaborated here.

[0119] In one embodiment, the feeding assembly 13 includes at least a feeding drive 131 and an extrusion gear 132. The feeding drive 131 and the extrusion gear 132 are drivenly connected. The transmission channel 100 passes through the extrusion gear 132, which clamps the consumable and feeds it to the hot end 14. It is understood that the specific structure of the feeding drive 131 and the pair of extrusion gears 132 can be a known and feasible solution, such as a drive motor, a combination of a driving wheel and a driven wheel, etc., which will not be described in detail here.

[0120] In one embodiment, the hot end 14 includes at least a heat dissipation portion 141, a heating portion 142, and a nozzle portion 143, with the heat dissipation portion 141 and the heating portion 142 respectively connected to the nozzle portion 143. The heating portion 142 can heat the nozzle portion 143, causing the consumable material located therein to melt. The heat dissipation portion 141 is thermally coupled to the nozzle portion 143 and / or the heating portion 142, thereby achieving heat dissipation from the hot end 14. It is understood that the specific structures of the heat dissipation portion 141, the heating portion 142, and the nozzle portion 143 can be known and feasible solutions, and will not be described in detail here.

[0121] Further integration Figures 2 to 4As shown, in one embodiment, the first moving member 121 includes a first end 1211, a second end 1212, and a force-applying end 1213 spaced apart. The first end 1211 is rotatably connected to the first support 11 via a pivot 1214, and the second end 1212 is configured to be driven to rotate the first moving member 121 along the pivot 1214. The force-applying end 1213 is located between the first end 1211 and the second end 1212, and is located on the side of the first moving member 121 facing the second moving member 122 and the transmission channel 100. The force-applying end 1213 contacts the second moving member 122 and is used to push the second moving member 122.

[0122] In this embodiment, the first support 11 has an opening structure 113 on its side. The length direction of the opening structure 113 is approximately along the first direction H of the transmission channel 100. The first moving member 121 extends approximately along the first direction H of the transmission channel 100 and is matchedly disposed at the opening structure 113. The first end 1211 has a generally arcuate outer surface and is received in an arcuate groove opened in the first support 11. The rotating shaft 1214 passes through the first support 11 and the first end 1211, allowing the first end 1211 to rotate relative to the first support 11. The second end 1212 is disposed at both ends of the first moving member 121, and the second end 1212 is movably disposed. The force-applying end 1213 can be a structure that protrudes toward the side where the second moving member 122 is located.

[0123] Understandably, the second end 1212 can move with the print head device 10 to collide with other units (such as the Z-axis support of a 3D printing device). After being collided, the second end 1212 is driven to move toward the side where the transmission channel 100 is located. The first moving member 121 rotates toward the side where the transmission channel 100 is located with the connection between the first end 1211 and the rotating shaft 1214 as the rotation axis. This causes the force-applying end 1213 located between the first end 1211 and the second end 1212 to move toward the side where the transmission channel 100 is located, thereby pushing the second moving member 122 and the material breaking member 125 toward the transmission channel 100.

[0124] In one embodiment, the printhead device 10 further includes a second reset mechanism 124, which is a torsion spring. The second reset mechanism 124 is sleeved on the rotating shaft 1214 and disposed between the rotating shaft 1214 and the first end 1211. The second reset mechanism 124 is configured to be in a compressed state when the material breaking member 125 enters the transmission channel 100.

[0125] Understandably, the interior of the first end 1211 can be a hollow structure (not shown), creating a gap (not shown) between the rotating shaft 1214 and the housing of the first end 1211 that can accommodate the torsion spring. The torsion spring is placed in this gap, and its orientation is adjusted so that it is compressed when the cutting component 125 enters the transmission channel 100. Therefore, when the force applied to the first moving component 121 that causes it to deflect towards the side of the transmission channel 100 disappears, the first moving component 121 can be reset under the elastic drive of the second reset mechanism 124, improving the driving accuracy of the first moving component 121 and the accuracy of cutting the consumables.

[0126] In one embodiment, the first support 11 has a bottom end 112, and a second moving member 122 is disposed at the bottom end 112. The second moving member 122 has a guide hole 1226 extending through it along a first direction H of the transmission channel 100. A guide post 1227 extends through the guide hole 1226 and passes through the bottom end 112, and is fixedly connected to the first support 11. The second moving member 122 is configured to move along a second direction T, and the guide post 1227 is configured to be received in the guide hole 1226 when the second moving member 122 moves along the second direction T.

[0127] In one embodiment, the second moving member 122 includes a force-receiving end 1221 and a connecting end 1222 spaced apart along a second direction T. The force-receiving end 1221 is configured to contact the first moving member 121, the connecting end 1222 is configured to connect to the material breaking member 125, and the guide hole 1226 is located between the force-receiving end 1221 and the connecting end 1222.

[0128] In this embodiment, the cutting element 125 is a blade. One end of the cutting element 125 is inserted into the connecting end 1222 and fixed to the second moving element 122. The other end of the cutting element 125 is a cutting head 1251, used to penetrate the transmission channel 100 to cut the consumable. The cutting head 1251 of the cutting element 125 is designed to be relatively wide and flat along the second direction T. Specifically, the cutting edge angle of the cutting head 1251 can be from 15° to 60°, and further can be 20°, 25°, 30°, 35°, 40°, 45°, 50°, or 55°. It can be understood that within the above range, the smaller the cutting edge angle, the smaller the cross-sectional area of ​​the cutting head 1251, the greater the corresponding shearing force, and the easier it is to cut the consumable; at the same time, within the above range, the larger the cutting edge angle, the higher the strength of the cutting head 1251 and the better its durability.

[0129] In one embodiment, the second moving member 122 includes a top surface 1223, a bottom surface 1224, and two side surfaces 1225. The top surface 1223 and the bottom surface 1224 are spaced apart on opposite sides of the second moving member 1222, and the two side surfaces 1225 are spaced apart on opposite sides of the second moving member 1222. The top surface 1223, the bottom surface 1224, and the two side surfaces 1225 are located between the force-receiving end 1221 and the connecting end 1222. The bottom surface 1224 contacts the bottom end 112 and is slidable relative to the bottom end 112, and the two side surfaces 1225 are slidable relative to the first support 11. The guide hole 1226 penetrates the top surface 1223 and the bottom surface 1224 along the first direction H of the transmission channel 100. The guide hole 1226 has a first accommodating cavity 12261 and a second accommodating cavity 12262 that communicate with each other. The diameter of the first accommodating cavity 12261 is smaller than the diameter of the second accommodating cavity 12262. The second accommodating cavity 12262 is located closer to the top surface 1223 than the first accommodating cavity 12261. The guide post 1227 is bolt-shaped and includes a screw. 12271 and nut 12272, the outer diameter of nut 12272 is larger than the outer diameter of screw 12271, screw 12271 passes through the first receiving cavity 12261 and is fixedly connected to the bottom end 112, and nut 12272 is received in the second receiving cavity 12262; the length of the first receiving cavity 12261 along the second direction T is larger than the outer diameter of screw 12271, and the length of the second receiving cavity 12262 along the second direction T is larger than the outer diameter of nut 12272.

[0130] Understandably, through the cooperation of the guide post 1227, the guide hole 1226, and the bottom end 112, the second moving part 122 is movably connected to the first support 11, and the second moving part 122 can be guided and reciprocate along the second direction T. Specifically, the force-applying end 1213 moves toward the side where the transmission channel 100 is located, and the force-applying end 1213 contacts the force-receiving end 1221 and pushes the second moving part 122. Under the cooperation of the guide post 1227, the guide hole 1226, and the bottom end 112, the second moving part 122 moves along the second direction T toward the side where the transmission channel 100 is located, and further drives the cutting head 1251 of the cutting part 125 to enter the transmission channel 100 to cut the consumable.

[0131] In this embodiment, the first moving member 121 and the second moving member 122 are separately configured, and the force-applying end 1213 and the force-receiving end 1221 are in separable contact. In other embodiments, the first moving member 121 and the second moving member 122 may also be integrally configured, with the force-applying end 1213 connected to the force-receiving end 1221.

[0132] Further integration Figures 5 to 7As shown, in one embodiment, the first reset mechanism 123 is reset by magnetically driving the second moving member 122. The first reset mechanism 123 includes a first magnetic member 1231 and a second magnetic member 1232. The first magnetic member 1231 is connected to the second moving member 122, and the second magnetic member 1232 is connected to the first support 11. The first magnetic member 1231 and the second magnetic member 1232 are movably arranged relative to each other. The first magnetic member 1231 and the second magnetic member 1232 are configured such that when the material breaking member 125 enters the transmission channel 100, the repulsive force between the first magnetic member 1231 and the second magnetic member 1232 is greater than the attractive force between the first magnetic member 1231 and the second magnetic member 1232.

[0133] Understandably, the first magnetic element 1231 is connected to the second moving element 122 and can act as a force-bearing unit, and the second magnetic element 1232 is connected to the first support 11 and can act as a force-bearing unit. The first magnetic element 1231 and the second magnetic element 1232 are movably arranged to each other, so that the second moving element 122 can be driven by the first reset mechanism 123 to move relative to the first support 11. When the material breaking element 125 enters the transmission channel 100, the repulsive force between the first magnetic element 1231 and the second magnetic element 1232 is greater than the attractive force between the first magnetic element 1231 and the second magnetic element 1232. This causes the second moving element 122 to move away from the transmission channel 100 under the repulsive force between the first magnetic element 1231 and the second magnetic element 1232, so that the material breaking element 125 exits the transmission channel 100.

[0134] In one embodiment, the second moving member 122 is configured to move along a second direction T to drive the material cutting member 125 into or out of the transmission channel 100. A first magnetic member 1231 and a second magnetic member 1232 are arranged side-by-side along the second direction T. The first magnetic member 1231 includes a first magnetic pole 12311 and a second magnetic pole 12312. The first magnetic pole 12311 is positioned closer to the transmission channel 100 along the second direction T than the second magnetic pole 12312. The second magnetic member 1232 includes a third magnetic pole 12321 and a fourth magnetic pole 12322. The third magnetic pole 12321 is positioned closer to the transmission channel 100 along the second direction T than the fourth magnetic pole 12322. The first magnetic pole 12311 and the third magnetic pole 12321 are of the same name, and the second magnetic pole 12312 and the fourth magnetic pole 12322 are of the same name.

[0135] In this embodiment, the first magnetic element 1231 and the second magnetic element 1232 are bar permanent magnets of approximately equal length. The length directions of the first magnetic element 1231 and the second magnetic element 1232 are approximately parallel to the second direction T. The second magnetic element 1232 is closer to the transmission channel 100 along the second direction T than the first magnetic element 1231. That is, the third magnetic pole 12321 is closer to the transmission channel 100 along the second direction T than the first magnetic pole 12311, and the fourth magnetic pole 12322 is closer to the transmission channel 100 along the second direction T than the second magnetic pole 12312.

[0136] Understandably, when the cutting component 125 enters the transmission channel 100, the positions of the first magnetic pole 12311 and the third magnetic pole 12321 roughly correspond. Since the first magnetic pole 12311 and the third magnetic pole 12321 are of the same name, their proximity creates a significant repulsive force between them. Simultaneously, the positions of the second magnetic pole 12312 and the fourth magnetic pole 12322 roughly correspond. Since the second magnetic pole 12312 and the fourth magnetic pole 12322 are of the same name, their proximity creates a significant repulsive force between them. That is, there is a significant repulsive force between the first magnetic component 1231 and the second magnetic component 1232, and the second magnetic component 1232 is slightly closer to the transmission channel 100 than the first magnetic component 1231. This causes the second moving component 122, connected to the first magnetic component 1231, to tend to move away from the transmission channel 100 due to the repulsive force.

[0137] In one embodiment, a first reset mechanism 123 is disposed between the first moving member 121 and the material breaking member 125. The first magnetic pole 12311 and the second magnetic pole 12312 are opposite magnetic poles, and the third magnetic pole 12321 and the fourth magnetic pole 12322 are opposite magnetic poles. The first magnetic member 1231 and the second magnetic member 1232 are configured such that when the material breaking member 125 enters the transmission channel 100, the first magnetic pole 12311 and the third magnetic pole 12321 are arranged side by side along the second direction T, and / or the second magnetic pole 12312 and the fourth magnetic pole 12322 are arranged side by side along the second direction T.

[0138] Understandably, when the external force applied by the first moving part 121 to the second moving part 122 is removed or reduced, the second moving part 122 moves away from the transmission channel 100 due to the repulsive force between the first magnetic part 1231 and the second magnetic part 1232, causing the material breaking part 125 to exit the transmission channel 100 until the first magnetic pole 12311 and the third magnetic pole 12321 are misaligned, and / or the second magnetic pole 12312 and the fourth magnetic pole 12322 are misaligned, while the positions of the first magnetic pole 12311 and the fourth magnetic pole 12322 correspond. Since the first magnetic pole 12311 and the fourth magnetic pole 12322 are opposite magnetic poles, there is a magnetic attraction between the first magnetic pole 12311 and the fourth magnetic pole 12322. The first magnetic component 1231 and the second magnetic component 1232 tend to be in a position close to each other, so that the second moving component 122 connected to the first magnetic component 1231 has a roughly determined reset position, thereby improving the accuracy of each reset.

[0139] In one embodiment, the first support 11 has an inner end 111, which is spaced apart from the transmission channel 100. The second moving member 122 includes a first receiving hole 1220, which is located on the side of the second moving member 122 facing the inner end 111. A first magnetic member 1231 is received within the first receiving hole 1220, and a second receiving hole 1110 is formed on the side of the inner end 111 facing the second moving member 122, whereby the second magnetic member 1232 is received.

[0140] In this embodiment, the first receiving hole 1220 is formed on the side 1225 of the second moving member 122. The side 1225 of the second moving member 122 with the receiving hole is positioned towards the inner end 111. The dimensions of the first receiving hole 1220 and the second receiving hole 1110 are respectively matched with the dimensions of the first magnetic member 1231 and the second magnetic member 1232 to prevent the first magnetic member 1231 and the second magnetic member 1232 from sliding within the first receiving hole 1220 and the second receiving hole 1110. The first magnetic pole 12311 and the second magnetic pole 12312 are respectively one of the N pole and the S pole, and the third magnetic pole 12321 and the fourth magnetic pole 12322 are also respectively one of the N pole and the S pole.

[0141] Understandably, "like poles" means that both magnetic poles are either N poles or both are S poles, and like poles repel each other; "unlike poles" means that one magnetic pole is N pole and the other is S pole, and unlike poles attract each other.

[0142] Further integration Figures 8 to 10As shown, in one embodiment, the first reset mechanism 123 drives the second moving member 122 to reset via elastic force. The first reset mechanism 123 includes a first elastic member 1233. The second moving member 122 is configured to move along a second direction T. The first elastic member 1233 is clamped between the second moving member 122 and the first support 11 along the second direction T. The first elastic member 1233 is configured to be in a compressed state when the material breaking member 125 enters the transmission channel 100.

[0143] In this embodiment, the first elastic element 1233 is a spring. In other embodiments, the first elastic element 1233 can also be a deformable structure such as an elastic rubber rod that can store and release elastic force. It is understood that the first elastic element 1233 is located between the second moving element 122 and the first support 11. When the material breaking element 125 enters the transmission channel 100, the first elastic element 1233 is in a compressed state. When the external force applied by the first moving element 121 to the second moving element 122 is removed or reduced, the second moving element 122 moves away from the transmission channel 100 due to the elastic force generated by the first elastic element 1233, causing the material breaking element 125 to exit the transmission channel 100.

[0144] In one embodiment, the first support 11 further includes a guide portion 1121 protruding from the bottom end 112, and the transmission channel 100 is disposed through the guide portion 1121 along the first direction H. The second moving member 122 has a guide groove 1228, which is located between the material cutting member 125 and the bottom end 112. One end of the first elastic member 1233 is received in the guide groove 1228, and the other end of the first elastic member 1233 extends out of the guide groove 1228 and abuts against the guide portion 1121.

[0145] In this embodiment, the guide groove 1228 can be formed by a recess on one side of the bottom surface 1224 of the second moving member 122 towards the top surface 1223. Simultaneously, the guide groove 1228 has a window 12281 on one side corresponding to the connecting end 1222, exposing the interior of the guide groove 1228. The first elastic member 1233 is disposed in the guide groove 1228 and can extend out of the guide groove 1228 from the window 12281. The guide portion 1121 protrudes from the bottom end 112, cooperating with the bottom end 112 and the inner end 111 to accommodate and guide the second moving member 122. One end of the first elastic member 1233 extending out of the guide groove 1228 abuts against the side wall of the guide portion 1121. The guide groove 1228 and the guide portion 1121 cooperate to guide the first elastic member 1233, allowing the first elastic member 1233 to expand or be compressed along the second direction T, thereby improving the reset accuracy of the second moving member 122.

[0146] In one embodiment, the guide portion 1121 has a feed groove 11210 along the second direction T. The feed groove 11210 is connected to the transmission channel 100. The end of the material cutter 125 away from the second moving member 122 is configured to enter the transmission channel 100 through the feed groove 11210.

[0147] In this embodiment, the shape of the feed groove 11210 matches the shape of the cutter head 1251 of the material cutter 125, and the cutter head 1251 can extend into the transmission channel 100 through the feed groove 11210 to further improve the feed accuracy.

[0148] Further integration Figure 11 As shown, the first reset mechanism 123 can simultaneously include a first magnetic element 1231, a second magnetic element 1232, and a first elastic element 1233; the side 1225 of the second moving element 122 has a first receiving hole 1220, and the bottom 1224 of the second moving element 122 has a guide groove 1228. The first reset mechanism 123 simultaneously drives the second moving element 122 through magnetic force and elastic force, causing the material breaking element 125 to exit the transmission channel 100.

[0149] Further integration Figure 12 As shown, this application embodiment also provides a 3D printing device 1, which includes a forming platform 16, a driving component 18, and a print head device 10 as described in any of the foregoing embodiments. The driving component 18 drives the print head device 10 to move relative to the forming platform 16.

[0150] The specific embodiments of this application have been described above with reference to the accompanying drawings. However, those skilled in the art will understand that various changes and substitutions can be made to the specific embodiments of this application without departing from the spirit and scope of this application. All such changes and substitutions fall within the scope defined by this application.

Claims

1. A printhead device having a transmission channel for transmitting consumables, characterized in that, The printhead assembly also includes: A first support, wherein the transmission channel passes through the first support along a first direction; A material cutting component includes a first moving part, a second moving part, a first reset mechanism, and a material cutting component. The first moving part is rotatably connected to the first support, the second moving part is movably connected to the first support, the first reset mechanism connects the second moving part and the first support, and the material cutting component is connected to the second moving part. Wherein, the first moving member is configured to move the second moving member between a first position and a second position; when moving from the first position to the second position, the second moving member drives the material breaking member to enter the transmission channel from a second direction, the first direction intersecting the second direction, and the first reset mechanism provides a reset force to return the second moving member to the first position through magnetic force and / or elastic force.

2. The printhead device as described in claim 1, characterized in that, The first reset mechanism includes: A first magnetic component, which is connected to the second moving component; A second magnetic component is connected to the first bracket. The first magnetic element and the second magnetic element are movably disposed from each other, and the first magnetic element and the second magnetic element are configured such that when the material breaking element enters the transmission channel, the repulsive force between the first magnetic element and the second magnetic element is greater than the attractive force between the first magnetic element and the second magnetic element.

3. The printhead device as described in claim 2, characterized in that, The second moving member is configured to move along the second direction to drive the material breaking member into or out of the transmission channel; The first magnetic component and the second magnetic component are arranged side by side along the second direction; The first magnetic element includes a first magnetic pole and a second magnetic pole, wherein the first magnetic pole is disposed closer to the transmission channel along the second direction than the second magnetic pole; The second magnetic element includes a third magnetic pole and a fourth magnetic pole, wherein the third magnetic pole is disposed closer to the transmission channel along the second direction than the fourth magnetic pole; Wherein, the first magnetic pole and the third magnetic pole are magnetic poles of the same name, and the second magnetic pole and the fourth magnetic pole are magnetic poles of the same name.

4. The printhead device as described in claim 3, characterized in that, The first reset mechanism is located between the first moving component and the material breaking component; The first magnetic pole and the second magnetic pole are opposite magnetic poles, and the third magnetic pole and the fourth magnetic pole are opposite magnetic poles; The first magnetic element and the second magnetic element are configured such that when the material breaking element enters the transmission channel, the first magnetic pole and the third magnetic pole are arranged side by side along the second direction, and / or the second magnetic pole and the fourth magnetic pole are arranged side by side along the second direction.

5. The printhead device as described in claim 2, characterized in that, The first bracket has an inner end, which is spaced apart from the transmission channel; The second moving member includes a first receiving hole, which is located on the side of the second moving member facing the inner end, and the first magnetic member is received in the first receiving hole; The inner end is provided with a second receiving hole facing the second moving part, and the second magnetic part is received in the second receiving hole.

6. The printhead device as claimed in claim 1, characterized in that, The first reset mechanism drives the second moving member to reset via elastic force. The second moving member is configured to move along the second direction. The first reset mechanism includes: A first elastic element is sandwiched between the second moving element and the first support along the second direction. The first elastic element is configured to be in a compressed state when the material breaking element enters the transmission channel.

7. The printhead device as claimed in claim 6, characterized in that, The first support has a bottom end, and the first support also includes a guide portion protruding from the bottom end. The transmission channel is disposed through the guide portion along the first direction. The second moving member has a guide groove, and the guide groove is located between the material breaking member and the bottom end. One end of the first elastic member is received in the guide groove, and the other end of the first elastic member extends out of the guide groove and abuts against the guide portion.

8. The printhead device as claimed in claim 7, characterized in that, The guide portion has a feed groove along the second direction, the feed groove is connected to the transmission channel, and the end of the material cutter away from the second moving part is configured to enter the transmission channel through the feed groove.

9. The printhead device as claimed in claim 1, characterized in that, The second moving member is configured to move along the second direction; The first support has a bottom end, and the second moving component is disposed at the bottom end; The second moving member has a guide hole through it along the first direction, and a guide post is provided through the guide hole and passes through the bottom end and is fixedly connected to the first bracket. The guide post is configured to be received in the guide hole when the second moving member moves along the second direction.

10. The printhead device as claimed in claim 9, characterized in that, The second moving member includes a force-receiving end and a connecting end spaced apart along the second direction. The force-receiving end is configured to contact the first moving member, and the connecting end is configured to connect the material breaking member. The guide hole is located between the force-receiving end and the connecting end.

11. The printhead device as claimed in claim 1, characterized in that, The first moving component includes: The first end is rotatably connected to the first bracket via a rotating shaft; The second end is configured to be driven to rotate the first moving member along the axis of rotation; The force-applying end is located between the first end and the second end, and is located on the side of the first moving member facing the second moving member and the transmission channel. The force-applying end is in contact with the second moving member and is used to push the second moving member.

12. The printhead apparatus as claimed in claim 11, characterized in that, The printhead device further includes a second reset mechanism, which is a torsion spring. The second reset mechanism is sleeved on the rotating shaft and located between the rotating shaft and the first end. The second reset mechanism is configured to be in a compressed state when the broken material enters the transmission channel.

13. A 3D printing device, characterized in that, It includes a forming platform, a drive assembly, and a printhead assembly as described in any one of claims 1 to 12, wherein the drive assembly drives the printhead assembly to move relative to the forming platform.

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