Printing head device and 3D printing equipment applying same

Abstract

The embodiment of the utility model 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, a second support and a third support, the material cutting assembly comprises a first moving part, a first reset mechanism and a material cutting part, the first moving part is movably connected with the first support and the material cutting part, and the first reset mechanism is connected with the first moving part and the first support; the first reset mechanism is used for driving the first moving part to drive the material cutting part to reset through magnetic force. The 3D printing equipment comprises a forming platform, a driving assembly and any printing head device in the embodiment, and the driving assembly drives the printing head device to move relative to the forming platform.

Description

Technical Field

[0001] The present application relates to the field of 3D printing, and particularly to a print head device and a 3D printing apparatus using the same. Background Art

[0002] 3D printing technology is a rapid prototyping technology that uses a digital model file as a basis and applies special wax materials, powdered metals, plastics, or other bondable materials to manufacture three-dimensional objects by printing layer upon layer of materials. Fused deposition modeling (FDM) technology is one of the main 3D printing technologies. In this technology, a thermoplastic filament is heated and melted and then extruded from a nozzle, deposited on a forming platform or the previously solidified material of the previous layer, and finally a physical object is generated. During the 3D printing process, it may be necessary to replace the consumables, and a common method is to cut the consumables and then replace them. How to optimize this process is something that those skilled in the art need to consider. Summary of the Utility Model

[0003] To solve the problems in the prior art, embodiments of the present application provide a print head device and a 3D printing apparatus using the same.

[0004] Embodiments of the present application provide a print head device having a transmission channel for transmitting a consumable, and the print head device further includes:

[0005] A first bracket, the transmission channel passes through the first bracket;

[0006] A material cutting assembly including a first moving member, a first reset mechanism, and a material cutting member, the first moving member is respectively connected to the first bracket movably and the material cutting member, the first reset mechanism is connected to the first moving member and the first bracket, and the first reset mechanism is configured to drive the first moving member to drive the material cutting member to reset by magnetic force.

[0007] In one embodiment, the transmission channel passes through the first bracket along a first direction, and the material cutting assembly further includes:

[0008] A second moving member rotatably connected to the first bracket; wherein, the second moving member is configured to move the first moving member between a first position and a second position, when moving from the first position to the second position, the first moving member drives the material cutting member to enter the transmission channel from a second direction, the first direction intersects with the second direction, and the first reset mechanism provides a reset force for the second moving member to return to the first position by magnetic force.

[0009] In one embodiment, the first reset mechanism includes:

[0010] A first magnetic member connected to the first moving member;

[0011] A second magnetic member, which is connected to the first bracket;

[0012] The first magnetic member and the second magnetic member are movably arranged relative to each other, and the first magnetic member and the second magnetic member are configured such that when the blanking member intrudes into the transmission channel, the repulsive force between the first magnetic member and the second magnetic member is greater than the attractive force between the first magnetic member and the second magnetic member.

[0013] In one embodiment, the first moving member is configured to move along the second direction to drive the blanking member to intrude into or withdraw from the transmission channel;

[0014] The first magnetic member and the second magnetic member are arranged side by side along the second direction;

[0015] The first magnetic member includes a first magnetic pole and a second magnetic pole, and the first magnetic pole is arranged closer to the transmission channel than the second magnetic pole along the second direction;

[0016] The second magnetic member includes a third magnetic pole and a fourth magnetic pole, and the third magnetic pole is arranged closer to the transmission channel than the fourth magnetic pole along the second direction;

[0017] Wherein, the first magnetic pole and the third magnetic pole are like-named magnetic poles, and the second magnetic pole and the fourth magnetic pole are like-named magnetic poles.

[0018] In one embodiment, the first reset mechanism is arranged between the second moving member and the blanking member;

[0019] The first magnetic pole and the second magnetic pole are unlike-named magnetic poles, and the third magnetic pole and the fourth magnetic pole are unlike-named magnetic poles;

[0020] The first magnetic member and the second magnetic member are configured such that when the blanking member intrudes into 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.

[0021] In one embodiment, the first bracket has an inner end, and the inner end is spaced apart from the transmission channel;

[0022] The first moving member includes a first receiving hole, the first receiving hole is arranged on one side of the first moving member facing the inner end, and the first magnetic member is received in the first receiving hole;

[0023] A second receiving hole is formed on one side of the inner end facing the first moving member, and the second magnetic member is received in the second receiving hole.

[0024] In one embodiment, the first moving member is configured to move along the second direction, and the first reset mechanism further includes:

[0025] A first elastic member that is clamped between the first moving member and the first bracket along the second direction, and the first elastic member is configured to be in a compressed state when the blanking member intrudes into the transmission channel.

[0026] In one embodiment, the first bracket has a bottom end, and the first bracket further includes a guiding portion protruding from the bottom end. The transmission channel is disposed through the guiding portion along the first direction. The first moving member is provided with a guiding groove, and the guiding groove is located between the blanking member and the bottom end;

[0027] One end of the first elastic member is received in the guiding groove, and the other end of the first elastic member extends out of the guiding groove and abuts against the guiding portion.

[0028] In one embodiment, the guiding portion is provided with a cutting groove along the second direction, and the cutting groove is communicated with the transmission channel. One end of the blanking member away from the first moving member is configured to intrude into the transmission channel through the cutting groove.

[0029] In one embodiment, the first moving member is configured to move along the second direction;

[0030] The first bracket has a bottom end, and the first moving member is disposed at the bottom end;

[0031] The first moving member is provided with a guiding hole penetrating along the first direction. A guiding column penetrates through the guiding hole and passes through the bottom end to be fixedly connected to the first bracket. The guiding column is configured to be received in the guiding hole when the first moving member moves along the second direction.

[0032] In one embodiment, the first 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 second moving member, and the connecting end is configured to connect the blanking member. The guiding hole is located between the force-receiving end and the connecting end.

[0033] In one embodiment, the second moving member includes:

[0034] A first end portion that is rotatably connected to the first bracket through a rotating shaft;

[0035] A second end portion that is configured to be driven to drive the second moving member to rotate along the rotating shaft;

[0036] A force - applying end part, the force - applying end part is located between the first end part and the second end part, the force - applying end part is located on the side where the second moving part faces the first moving part and the transmission channel, the force - applying end part contacts the first moving part and is used for pushing the first moving part.

[0037] In one embodiment, the print head device further includes a second reset mechanism. The second reset mechanism is a torsion spring. The second reset mechanism is sleeved on the rotating shaft and is arranged between the rotating shaft and the first end part. The second reset mechanism is configured to be in a compressed state when the material - breaking part intrudes into the transmission channel.

[0038] The embodiment of the present application also provides a 3D printing device, which includes a forming platform, a driving component, and the print head device as described in any one of the foregoing embodiments. The driving component drives the print head device to move relative to the forming platform.

[0039] It can be understood that in the print head device of the present application, the second moving part is rotatably connected to the first bracket, so that the second moving part can be driven by an external force to rotate relative to the first bracket; the first moving part is connected to the material - breaking part and is arranged closer to the transmission channel than the second moving part. The first moving part can be pushed by the second moving part and drive the material - breaking part to intrude into the transmission channel to cut the consumable; the first reset mechanism is connected to the first moving part and the first bracket. The first reset mechanism drives the first moving part to drive the material - breaking part to withdraw from the transmission channel through magnetic force and / or elastic force, so that the first moving part and the material - breaking part are reset, which is convenient for subsequent processing. Description of the Drawings

[0040] Figure 1 It is a three - dimensional schematic diagram of the print head device provided by the embodiment of the present application.

[0041] Figure 2 is Figure 1 A cross - sectional schematic view along the II - II direction.

[0042] Figure 3 It is a three - dimensional schematic diagram of the cooperation between the material - breaking component and the first bracket of the print head device provided by the embodiment of the present application.

[0043] Figure 4 It is a three - dimensional exploded schematic diagram of the material - breaking component of the print head device provided by the embodiment of the present application.

[0044] Figure 5 It is a three - dimensional exploded schematic diagram of the cooperation between the material - breaking component and the first bracket of the print head device provided by an embodiment of the present application.

[0045] Figure 6 It is a partial three - dimensional exploded schematic diagram of the material - breaking component provided by an embodiment of the present application.

[0046] Figure 7 Cross-sectional schematic view of a print head device provided by an embodiment of the present application.

[0047] Figure 8 Three-dimensional schematic view of the cooperation between the material cutting component and the first bracket of the print head device provided by another embodiment of the present application.

[0048] Figure 9 Cross-sectional schematic view of the cooperation between the material cutting component and the first bracket of the print head device provided by another embodiment of the present application.

[0049] Figure 10 Partial three-dimensional schematic view of the material cutting component of the print head device provided by another embodiment of the present application.

[0050] Figure 11 Three-dimensional schematic view of the print head device provided by still another embodiment of the present application.

[0051] Figure 12 Three-dimensional schematic view of a 3D printing device provided by an embodiment of the present application.

[0052] Description of main element symbols

[0053] Print head device 10

[0054] Transfer channel 100

[0055] First bracket 11

[0056] Inner end 111

[0057] Second receiving hole 1110

[0058] Bottom end 112

[0059] Guide portion 1121

[0060] Feed groove 11210

[0061] Opening structure 113

[0062] Material cutting component 12

[0063] Second moving member 121

[0064] First end 1211

[0065] Second end 1212

[0066] Force application end 1213

[0067] Rotating shaft 1214

[0068] First moving member 122

[0069] First receiving hole 1220

[0070] Force-receiving end 1221

[0071] Connection end 1222

[0072] Top surface 1223

[0073] Bottom surface 1224

[0074] Side surface 1225

[0075] Guide hole 1226

[0076] First accommodating cavity 12261

[0077] Second accommodating cavity 12262

[0078] Guide post 1227

[0079] Screw rod 12271

[0080] Nut 12272

[0081] Guide groove 1228

[0082] Window 12281

[0083] First reset mechanism 123

[0084] First magnetic part 1231

[0085] First magnetic pole 12311

[0086] Second magnetic pole 12312

[0087] Second magnetic part 1232

[0088] Third magnetic pole 12321

[0089] Fourth magnetic pole 12322

[0090] First elastic part 1233

[0091] Second reset mechanism 124

[0092] Stock-breaking part 125

[0093] Tool bit 1251

[0094] Feeding component 13

[0095] Feeding driving part 131

[0096] Extrusion gear 132

[0097] Hot end 14

[0098] Heat dissipation part 141

[0099] Heating part 142

[0100] Nozzle part 143

[0101] Second direction T

[0102] First direction H

[0103] 3D printing device 1

[0104] Forming platform 16

[0105] Drive assembly 18

[0106] The following specific embodiments will further illustrate the present application in conjunction with the above-mentioned drawings. Specific embodiments

[0107] The following description will refer to the drawings to more fully describe the content of the present application. The exemplary embodiments shown in the drawings are of the present application. However, the present application can be implemented in many different forms and should not be construed as limited to the exemplary embodiments set forth herein. These exemplary embodiments are provided to make the present application thorough and complete and to fully convey the scope of the present application to those skilled in the art. Similar reference numerals denote the same or similar components. The terms used herein are for the purpose of describing particular exemplary embodiments only and are not intended to limit the present application. As used herein, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include the plural forms as well. Further, when used in this application, "comprising" and / or "including" 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 meaning as commonly understood by one of ordinary skill in the art to which this application belongs. Further, unless clearly defined in the text, terms such as those defined in a general dictionary should be construed as having a meaning consistent with their meaning in the relevant art and the content of this application and will not be construed as idealized or overly formal.

[0108] Generally, 3D printing technology is a rapid prototyping technology that uses a digital model file as a basis and applies bondable materials such as special wax materials, powdered metals, or plastics to manufacture three-dimensional objects by printing layer upon layer of materials. Fused deposition modeling is one of the main 3D printing technologies. This technology extrudes the melted thermoplastic filament from the nozzle after heating and deposits it on the forming platform or the previously solidified material of the previous layer to finally generate a physical object. During the 3D printing process, it may be necessary to replace the consumables, and a relatively common method is to cut off the consumables and then replace them. How to optimize this process is something that those skilled in the art need to consider.

[0109] Correspondingly, an embodiment of the present application provides a print head device and a 3D printing device applying the same. The print head device has a transmission channel for transmitting consumables, and the print head device further includes a first bracket and a material cutting assembly. The transmission channel passes through the first bracket in a first direction; the material cutting assembly includes a second moving member, a first moving member, a first reset mechanism, and a material cutting member. The second moving member is rotatably connected to the first bracket, the first moving member is movably connected to the first bracket, the first reset mechanism connects the first moving member and the first bracket, and the material cutting member is connected to the first moving member. Wherein, the second moving member is configured to move the first moving member between a first position and a second position; when moving from the first position to the second position, the first moving member drives the material cutting member to enter the transmission channel from a second direction, the first direction intersects the second direction, and the first reset mechanism provides a reset force to return the first moving member to the first position through magnetic force and / or elastic force.

[0110] Furthermore, in the print head device of the present application, the second moving member is rotatably connected to the first bracket, enabling the second moving member to be driven by an external force to rotate relative to the first bracket; the first moving member is connected to the material cutting member and is disposed closer to the transmission channel than the second moving member. The first moving member can be pushed by the second moving member and drive the material cutting member to invade the transmission channel to cut off the consumables; the first reset mechanism connects the first moving member and the first bracket, and the first reset mechanism drives the first moving member to drive the material cutting member to withdraw from the transmission channel through magnetic force and / or elastic force, resetting the first moving member and the material cutting member to facilitate subsequent processing.

[0111] Those skilled in the art can understand that "3D printing" refers to a technology that uses a digital model file as a basis and applies bondable materials such as powdered metals or plastics to construct an object by layer-by-layer printing.

[0112] The following content 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.

[0113] The following further describes in detail the specific embodiments of the present application with reference to the accompanying drawings.

[0114] As Figures 1 to 2 shown, an embodiment of the present application provides a print head device 10, which has a transmission channel 100 for transmitting consumables (not shown in the figure). The print head device 10 further includes a first bracket 11, a material cutting component 12, a material feeding component 13, and a hot end 14. The material cutting component 12, the material feeding component 13, and the hot end 14 are respectively connected to the first bracket 11, and the transmission channel 100 passes through the first bracket 11, the material feeding component 13, and the hot end 14 along the first direction H. The material feeding component 13 is used for transferring the consumables, the hot end 14 is used for heating the consumables, and the material cutting component 12 is used for cutting the consumables.

[0115] In one embodiment, the material cutting component 12 includes a second moving member 121, a first moving member 122, a first reset mechanism 123, and a material cutting member 125. The second moving member 121 is rotatably connected to the first bracket 11, the first moving member 122 is movably connected to the first bracket 11, the first reset mechanism 123 connects the first moving member 122 and the first bracket 11, and the material cutting member 125 is connected to the first moving member 122. Wherein, the second moving member 121 is configured to move the first moving member 122 between a first position and a second position; when moving from the first position to the second position, the first moving member 122 drives the material cutting member 125 to enter the transmission channel 100 from the second direction T. The first direction H intersects the second direction T, and the first reset mechanism 123 provides a reset force to return the first moving member 122 to the first position through magnetic force and / or elastic force.

[0116] Wherein, the first position is a position where the first moving member 122 is away from the transmission channel 100 and the material cutting member 125 is located outside the transmission channel 100, and the second position is a position where the first moving member 122 is close to the transmission channel 100 and the material cutting member 125 can be located inside the transmission channel 100.

[0117] It can be understood that in the print head device 10 of the present application, the second moving member 121 is rotatably connected to the first bracket 11, so that the second moving member 121 can be driven by an external force to rotate relative to the first bracket 11; the first moving member 122 is connected to the material cutting member 125 and is arranged closer to the transmission channel 100 than the second moving member 121. The first moving member 122 can be pushed by the second moving member 121 and drive the material cutting member 125 to invade the transmission channel 100 to cut the consumables; the first reset mechanism 123 connects the first moving member 122 and the first bracket 11, and the first reset mechanism 123 drives the first moving member 122 to drive the material cutting member 125 to exit the transmission channel 100 through magnetic force and / or elastic force, so that the first moving member 122 and the material cutting member 125 are reset, facilitating subsequent processing.

[0118] In this embodiment, the material cutting component 12 is arranged between the material feeding component 13 and the hot end 14. The transmission channel 100 sequentially penetrates through the material feeding component 13 and the hot end 14 along the first direction H. The material cutting piece 125 of the material cutting component 12 intrudes into or exits from the area of the transmission channel 100 between the material feeding component 13 and the hot end 14 along the second direction T. In other embodiments, the material cutting component 12 may also be arranged on the side of the material feeding component 13 away from the hot end 14.

[0119] It can be understood that the first direction H may be the extending direction of the transmission channel 100, and the second direction T may be a direction intersecting with the first direction H. In this embodiment, taking the transmission channel 100 arranged in a straight-line extending direction as an example for display, the first direction H correspondingly may be the axial direction of the transmission channel 100. In other embodiments, the first direction H may change following the layout form of the transmission channel 100, and different small segments of it may have different directions or extending forms corresponding to the transmission channel 100, which will not be elaborated here. In this embodiment, taking the second direction T being perpendicular to the first direction H as an example for display, the second direction T correspondingly may be the radial direction of the transmission channel 100. In other embodiments, the second direction T may also intersect with the first direction H at other angles, which will not be elaborated here.

[0120] In one embodiment, the material feeding component 13 at least includes a material feeding driving part 131 and an extrusion gear 132. The material feeding driving part 131 is drivingly connected to the extrusion gear 132. The transmission channel 100 passes through the extrusion gear 132, and the extrusion gear 132 clamps the consumable material and sends it to the hot end 14. It can be understood that the specific structures of the material feeding driving part 131 and a pair of extrusion gears 132 may be known and feasible solutions, such as the cooperation of a driving motor, a driving wheel and a driven wheel, etc., which will not be elaborated here.

[0121] In one embodiment, the hot end 14 at least includes a heat dissipation part 141, a heating part 142 and a nozzle part 143. The heat dissipation part 141 and the heating part 142 are respectively connected to the nozzle part 143. The heating part 142 can heat the nozzle part 143 to melt the consumable material located therebetween. The heat dissipation part 141 is thermally coupled with the nozzle part 143 and / or the heating part 142 to achieve heat dissipation of the hot end 14. It can be understood that the specific structures of the heat dissipation part 141, the heating part 142 and the nozzle part 143 may be known and feasible solutions, which will not be elaborated here.

[0122] Further combined with Figures 2 to 4As shown, in one embodiment, the second moving member 121 includes a first end portion 1211, a second end portion 1212, and a force - applying end portion 1213 that are spaced apart. The first end portion 1211 is rotatably connected to the first bracket 11 through a rotating shaft 1214. The second end portion 1212 is configured to be driven to drive the second moving member 121 to rotate along the rotating shaft 1214. The force - applying end portion 1213 is located between the first end portion 1211 and the second end portion 1212. The force - applying end portion 1213 is located on the side of the second moving member 121 facing the first moving member 122 and the transmission channel 100. The force - applying end portion 1213 contacts the first moving member 122 and is used to push the first moving member 122.

[0123] In this embodiment, the side surface of the first bracket 11 has an opening structure 113. The length direction of the opening structure 113 is generally along the first direction H of the transmission channel 100. The second moving member 121 extends generally along the first direction H of the transmission channel 100, and the second moving member 121 is disposed at the opening structure 113 in a matching manner. The first end portion 1211 generally has an arc - shaped outer surface. The first end portion 1211 is received in an arc - shaped groove opened in the first bracket 11. The rotating shaft 1214 passes through the first bracket 11 and the first end portion 1211, enabling the first end portion 1211 to rotate relative to the first bracket 11. The second end portion 1212 and the first end portion 1211 are respectively disposed at both ends of the second moving member 121. The second end portion 1212 is movably arranged, and the force - applying end portion 1213 can be a structure protruding toward the side where the first moving member 122 is located.

[0124] It can be understood that the second end portion 1212 can follow the movement of the print head device 10 to collide with other units (such as the Z - axis bracket of a 3D printing device). After being collided, the second end portion 1212 is driven to move toward the side where the transmission channel 100 is located. The second moving member 121 rotates toward the side where the transmission channel 100 is located with the connection portion between the first end portion 1211 and the rotating shaft 1214 as the rotation axis. Furthermore, the force - applying end portion 1213 located between the first end portion 1211 and the second end portion 1212 follows and moves toward the side where the transmission channel 100 is located to push the first moving member 122 and the material - cutting member 125 toward the transmission channel 100.

[0125] In one embodiment, the print head device 10 further includes a second reset mechanism 124. The second reset mechanism 124 is a torsion spring. The second reset mechanism 124 is sleeved on the rotating shaft 1214 and is disposed between the rotating shaft 1214 and the first end portion 1211. The second reset mechanism 124 is configured to be in a compressed state when the material - cutting member 125 intrudes into the transmission channel 100.

[0126] It can be understood that the interior of the first end portion 1211 can be a hollow structure (not shown in the figure), so that there is a gap (not shown in the figure) capable of accommodating a torsion spring between the rotating shaft 1214 and the housing of the first end portion 1211. The torsion spring is arranged in the gap, and the posture of the torsion spring is adjusted so that the torsion spring is in a compressed state when the blanking member 125 intrudes into the transmission channel 100. Therefore, when the force applied to the second moving member 121 to deflect it toward the side where the transmission channel 100 is located disappears, the second moving member 121 can be reset under the elastic force drive of the second reset mechanism 124, improving the driving accuracy of the second moving member 121 and the cutting accuracy of the consumable material.

[0127] In one embodiment, the first bracket 11 has a bottom end 112, and the first moving member 122 is arranged at the bottom end 112. The first moving member 122 is provided with a guiding hole 1226 penetrating along the first direction H of the transmission channel 100, and a guiding post 1227 penetrates through the guiding hole 1226 and passes through the bottom end 112 to be fixedly connected with the first bracket 11. The first moving member 122 is configured to move along the second direction T, and the guiding post 1227 is configured to be received in the guiding hole 1226 when the first moving member 122 moves along the second direction T.

[0128] In one embodiment, the first moving member 122 includes a force receiving end 1221 and a connecting end 1222 arranged at intervals along the second direction T. The force receiving end 1221 is configured to contact the second moving member 121, the connecting end 1222 is configured to connect the blanking member 125, and the guiding hole 1226 is located between the force receiving end 1221 and the connecting end 1222.

[0129] In this embodiment, the blanking member 125 is a blade. One end of the blanking member 125 is inserted into the connecting end 1222 and fixed to the first moving member 122. One end of the blanking member 125 is a tool tip 1251 for intruding into the transmission channel 100 to cut the consumable material. The tool tip 1251 of the blanking member 125 is designed to be relatively wide and flat along the second direction T. Specifically, the blade angle of the tool tip 1251 can be 15° to 60°, and further can be 20°, 25°, 30°, 35°, 40°, 45°, 50°, 55°. It can be understood that within the above range, the smaller the blade angle, the smaller the cross-sectional area of the tool tip 1251, the greater the corresponding shearing force, and the easier it is to cut the consumable material; at the same time, within the above range, the larger the blade angle, the higher the strength of the tool tip 1251 and the better the durability.

[0130] In one embodiment, the first 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 two opposite sides of the first moving member 122, and the two side surfaces 1225 are spaced apart on two opposite sides of the first moving member 122. The top surface 1223, the bottom surface 1224, and the two side surfaces 1225 are disposed between the force-receiving end 1221 and the connecting end 1222. The bottom surface 1224 contacts the bottom end 112 and is capable of sliding relative to the bottom end 112, and the two side surfaces 1225 are capable of sliding relative to the first bracket 11. The guiding hole 1226 penetrates through the top surface 1223 and the bottom surface 1224 along the first direction H of the transmission channel 100. The guiding hole 1226 has a first accommodating cavity 12261 and a second accommodating cavity 12262 that communicate with each other. The aperture of the first accommodating cavity 12261 is smaller than the aperture of the second accommodating cavity 12262, and the second accommodating cavity 12262 is disposed closer to the top surface 1223 than the first accommodating cavity 12261. The guiding post 1227 is in the shape of a bolt and includes a screw rod 12271 and a nut 12272. The outer diameter of the nut 12272 is larger than the outer diameter of the screw rod 12271. The screw rod 12271 passes through the first accommodating cavity 12261 and is fixedly connected to the bottom end 112, and the nut 12272 is received in the second accommodating cavity 12262. The length of the first accommodating cavity 12261 along the second direction T is greater than the outer diameter of the screw rod 12271, and the length of the second accommodating cavity 12262 along the second direction T is greater than the outer diameter of the nut 12272.

[0131] It can be understood that through the cooperation of the guiding post 1227, the guiding hole 1226, and the bottom end 112, the first moving member 122 is movably connected to the first bracket 11, and the first moving member 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. The force-applying end 1213 contacts the force-receiving end 1221 and pushes the first moving member 122. The first moving member 122 moves along the second direction T toward the side where the transmission channel 100 is located under the cooperation of the guiding post 1227, the guiding hole 1226, and the bottom end 112, and further drives the cutter head 1251 of the blanking member 125 to penetrate into the transmission channel 100 to cut the consumable material.

[0132] In this embodiment, the second moving member 121 and the first moving member 122 are separately provided, and the force-applying end 1213 and the force-receiving end 1221 are separably in contact. In other embodiments, the second moving member 121 and the first moving member 122 may also be integrally provided, and the force-applying end 1213 and the force-receiving end 1221 are connected.

[0133] Further combined with Figures 5 to 7As shown, in one embodiment, the first reset mechanism 123 drives the first moving member 122 to reset by magnetic force. 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 first moving member 122, and the second magnetic member 1232 is connected to the first bracket 11. The first magnetic member 1231 and the second magnetic member 1232 are movably arranged relative to each other, and the first magnetic member 1231 and the second magnetic member 1232 are configured such that when the blanking member 125 intrudes into 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.

[0134] It can be understood that the first magnetic member 1231 is connected to the first moving member 122 and can be regarded as a stress integral body, and the second magnetic member 1232 is connected to the first bracket 11 and can be regarded as a stress integral body. The first magnetic member 1231 and the second magnetic member 1232 are movably arranged relative to each other, so that the first moving member 122 can be driven by the first reset mechanism 123 to move relative to the first bracket 11. When the blanking member 125 intrudes into 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. When the external force applied by the second moving member 121 to the first moving member 122 is withdrawn or reduced, the first moving member 122 moves away from the transmission channel 100 under the action of the repulsive force between the first magnetic member 1231 and the second magnetic member 1232, so that the blanking member 125 exits the transmission channel 100.

[0135] In one embodiment, the first moving member 122 is configured to move along the second direction T to drive the blanking member 125 to intrude into or exit the transmission channel 100. The first magnetic member 1231 and the 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 closer to the transmission channel 100 than the second magnetic pole 12312 along the second direction T. The second magnetic member 1232 includes a third magnetic pole 12321 and a fourth magnetic pole 12322. The third magnetic pole 12321 is closer to the transmission channel 100 than the fourth magnetic pole 12322 along the second direction T. The first magnetic pole 12311 and the third magnetic pole 12321 are like-named magnetic poles, and the second magnetic pole 12312 and the fourth magnetic pole 12322 are like-named magnetic poles.

[0136] In this embodiment, the first magnetic member 1231 and the second magnetic member 1232 are bar-shaped permanent magnets with substantially equal lengths. The length directions of the first magnetic member 1231 and the second magnetic member 1232 are substantially parallel to the second direction T. The second magnetic member 1232 is closer to the transmission channel 100 than the first magnetic member 1231 along the second direction T. That is, the third magnetic pole 12321 is closer to the transmission channel 100 than the first magnetic pole 12311 along the second direction T, and the fourth magnetic pole 12322 is closer to the transmission channel 100 than the second magnetic pole 12312 along the second direction T.

[0137] It can be understood that when the blanking member 125 intrudes into the transmission channel 100, the positions of the first magnetic pole 12311 and the third magnetic pole 12321 are substantially corresponding. The first magnetic pole 12311 and the third magnetic pole 12321 are like-named magnetic poles, and the mutual approach of the two makes there be a large repulsive force between the first magnetic pole 12311 and the third magnetic pole 12321. At the same time, the positions of the second magnetic pole 12312 and the fourth magnetic pole 12322 are substantially corresponding. The second magnetic pole 12312 and the fourth magnetic pole 12322 are like-named magnetic poles, and the mutual approach of the two makes there be a large repulsive force between the second magnetic pole 12312 and the fourth magnetic pole 12322. That is, there is a large repulsive force between the first magnetic member 1231 and the second magnetic member 1232, and the second magnetic member 1232 is slightly closer to the transmission channel 100 than the first magnetic member 1231, so that the first moving member 122 connected with the first magnetic member 1231 has a tendency to move away from the transmission channel 100 due to the repulsive force.

[0138] In one embodiment, the first reset mechanism 123 is arranged between the second moving member 121 and the blanking member 125. The first magnetic pole 12311 and the second magnetic pole 12312 are unlike-named magnetic poles, and the third magnetic pole 12321 and the fourth magnetic pole 12322 are unlike-named magnetic poles. The first magnetic member 1231 and the second magnetic member 1232 are configured such that when the blanking member 125 intrudes into 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.

[0139] It can be understood that when the external force applied by the second moving part 121 to the first moving part 122 is removed or reduced, the first moving part 122 is moved toward the side away from the transmission channel 100 by the repulsive force between the first magnetic part 1231 and the second magnetic part 1232, so that the cutting part 125 withdraws from the transmission channel 100, until the first magnetic pole 12311 is offset from the third magnetic pole 12321, and / or the second magnetic pole 12312 is offset from the fourth magnetic pole 12322, and at the same time, 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, and the first magnetic member 1231 and the second magnetic member 1232 tend to be in a position where the first magnetic pole 12311 and the fourth magnetic pole 12322 are close to each other, so that the first movable member 122 connected to the first magnetic member 1231 has a roughly determined reset position, thereby improving the accuracy of each reset.

[0140] In one embodiment, the first bracket 11 has an inner end 111, and the inner end 111 is spaced apart from the transmission channel 100. The first moving member 122 includes a first receiving hole 1220, and the first receiving hole 1220 is provided on the side of the first moving member 122 facing the inner end 111. The first magnetic member 1231 is received in the first receiving hole 1220, and a second receiving hole 1110 is provided on the side of the inner end 111 facing the first moving member 122, and the second magnetic member 1232 is received in the second receiving hole 1110.

[0141] In this embodiment, the first receiving hole 1220 is provided on the side surface 1225 of the first moving member 122, and the side surface 1225 of the first moving member 122 provided with the receiving hole is arranged toward the inner side end 111. The sizes of the first receiving hole 1220 and the second receiving hole 1110 are respectively matched with the sizes of the first magnetic member 1231 and the second magnetic member 1232, so as to prevent the first magnetic member 1231 and the second magnetic member 1232 from slipping in 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.

[0142] It can be understood that "same-name magnetic poles" means that both magnetic poles are N poles or both are S poles, and the same-name magnetic poles repel each other; "opposite-name magnetic poles" means that one of the two magnetic poles is N pole and the other is S pole, and the opposite-name magnetic poles attract each other.

[0143] Further integration Figures 8 to 10As shown, in one embodiment, the first reset mechanism 123 drives the first moving member 122 to reset by elastic force. The first reset mechanism 123 includes a first elastic member 1233. The first moving member 122 is configured to move along a second direction T. The first elastic member 1233 is clamped between the first moving member 122 and the first bracket 11 along the second direction T. The first elastic member 1233 is configured to be in a compressed state when the blanking member 125 intrudes into the transmission channel 100.

[0144] In this embodiment, the first elastic member 1233 is a spring. In other embodiments, the first elastic member 1233 can also be an elastic rubber rod or other structures that can deform and store and release elastic force. It can be understood that the first elastic member 1233 is disposed between the first moving member 122 and the first bracket 11. When the blanking member 125 intrudes into the transmission channel 100, the first elastic member 1233 is in a compressed state. When the external force applied by the second moving member 121 to the first moving member 122 is withdrawn or reduced, the first moving member 122 moves away from the side where the transmission channel 100 is located under the action of the elastic force generated by the first elastic member 1233, so that the blanking member 125 exits the transmission channel 100.

[0145] In one embodiment, the first bracket 11 further includes a guiding portion 1121 protruding from the bottom end 112. The transmission channel 100 is disposed through the guiding portion 1121 along the first direction H. The first moving member 122 is provided with a guiding groove 1228. The guiding groove 1228 is located between the blanking member 125 and the bottom end 112. One end of the first elastic member 1233 is received in the guiding groove 1228, and the other end of the first elastic member 1233 extends out of the guiding groove 1228 and abuts against the guiding portion 1121.

[0146] In this embodiment, the guiding groove 1228 can be formed by recessing from the bottom surface 1224 of the first moving member 122 toward one side of the top surface 1223. At the same time, one side of the guiding groove 1228 corresponding to the connecting end 1222 has a window 12281 for exposing the inside of the guiding groove 1228. The first elastic member 1233 is disposed in the guiding groove 1228 and can extend out of the guiding groove 1228 through the window 12281. The guiding portion 1121 protrudes from the bottom end 112. The guiding portion 1121 cooperates with the bottom end 112 and the inner end 111 to accommodate the first moving member 122 and guide it. One end of the first elastic member 1233 extending out of the guiding groove 1228 abuts against the side wall of the guiding portion 1121. The guiding groove 1228 and the guiding portion 1121 cooperate to guide the first elastic member 1233, so that the first elastic member 1233 can stretch or be compressed along the second direction T, improving the reset accuracy of the first moving member 122.

[0147] In one embodiment, the guiding portion 1121 is provided with a cutting feed groove 11210 along the second direction T. The cutting feed groove 11210 communicates with the transmission channel 100. One end of the blanking member 125 away from the first moving member 122 is configured to invade the transmission channel 100 via the cutting feed groove 11210.

[0148] In this embodiment, the shape of the cutting feed groove 11210 matches the shape of the cutting head 1251 of the blanking member 125. The cutting head 1251 can extend into the transmission channel 100 via the cutting feed groove 11210, further improving the cutting feed accuracy.

[0149] Further in combination with Figure 11 As shown, the first reset mechanism 123 can simultaneously include a first magnetic member 1231, a second magnetic member 1232, and a first elastic member 1233. A first receiving hole 1220 is formed in the side surface 1225 of the first moving member 122, and a guiding groove 1228 is formed in the bottom surface 1224 of the first moving member 122. The first reset mechanism 123 drives the first moving member 122 to drive the blanking member 125 to withdraw from the transmission channel 100 through magnetic force and elastic force simultaneously.

[0150] Further in combination with Figure 12 As shown, the embodiment of the present application further 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 one of the foregoing embodiments. The driving component 18 drives the print head device 10 to move relative to the forming platform 16.

[0151] In the foregoing, the specific embodiments of the present application have been described with reference to the accompanying drawings. However, those of ordinary skill in the art can understand that various changes and substitutions can be made to the specific embodiments of the present application without departing from the spirit and scope of the present application. These changes and substitutions all fall within the scope defined by the present application.

Claims

1. A print head device having a transmission channel for transmitting consumables, characterized in that: The print head device also includes: a first bracket, wherein the transmission channel is disposed through the first bracket; The material cutting component includes a first moving part, a first resetting mechanism and a material cutting part, wherein the first moving part is respectively connected to the first bracket and the material cutting part, the first resetting mechanism is connected to the first moving part and the first bracket, and the first resetting mechanism is used to drive the first moving part to reset the material cutting part through magnetic force.

2. The print head device according to claim 1, wherein: The transmission channel passes through the first bracket along a first direction, and the material cutting component further includes: a second moving member, the second moving member being rotatably connected to the first bracket; Wherein, the second moving part is configured to move the first moving part between a first position and a second position. When moving from the first position to the second position, the first moving part drives the material breaking part to enter the transmission channel from the second direction. The first direction intersects with the second direction. The first reset mechanism provides a reset force through magnetic force to return the second moving part to the first position.

3. The print head device according to claim 2, wherein: The first reset mechanism comprises: a first magnetic member connected to the first moving member; a second magnetic member, the second magnetic member being connected to the first bracket; The first magnetic member and the second magnetic member are movably arranged relative to each other, and the first magnetic member and the second magnetic member are constructed so that when the broken material member invades the transmission channel, the repulsive force between the first magnetic member and the second magnetic member is greater than the attractive force between the first magnetic member and the second magnetic member.

4. The print head device according to claim 3, wherein: The first moving member is configured to move along the second direction to drive the material-breaking member to intrude into or exit the transmission channel; The first magnetic member and the second magnetic member are arranged side by side along the second direction; The first magnetic member includes a first magnetic pole and a second magnetic pole, and the first magnetic pole is arranged closer to the transmission channel along the second direction than the second magnetic pole; The second magnetic member includes a third magnetic pole and a fourth magnetic pole, and the third magnetic pole is arranged closer to the transmission channel along the second direction than the fourth magnetic pole; The first magnetic pole and the third magnetic pole are magnetic poles with the same name, and the second magnetic pole and the fourth magnetic pole are magnetic poles with the same name.

5. The print head device according to claim 4, wherein: The first reset mechanism is arranged between the second moving member and the material breaking member; The first magnetic pole and the second magnetic pole are magnetic poles of opposite names, and the third magnetic pole and the fourth magnetic pole are magnetic poles of opposite names; The first magnetic member and the second magnetic member are constructed so that when the broken material member invades 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.

6. The print head device according to claim 3, wherein: The first bracket has an inner end, and the inner end is spaced apart from the transmission channel; The first moving member comprises a first receiving hole, the first receiving hole is arranged on the side of the first moving member facing the inner end, and the first magnetic member is received in the first receiving hole; A second accommodating hole is formed at the inner end facing the first moving member, and the second magnetic member is accommodated in the second accommodating hole.

7. The print head device according to claim 2, wherein: The first moving member is configured to move along the second direction, and the first resetting mechanism further comprises: A first elastic member is sandwiched between the first moving member and the first bracket along the second direction, and the first elastic member is configured to be in a compressed state when the material-breaking member invades the transmission channel.

8. The print head device according to claim 7, wherein: The first bracket has a bottom end, and the first bracket also includes a guide portion protruding from the bottom end, the transmission channel is arranged to pass through the guide portion along the first direction, and the first moving member is provided with 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.

9. The print head device according to claim 8, wherein: The guide portion is provided with a feed groove along the second direction, the feed groove is connected to the transmission channel, and the end of the cutting member away from the first moving member is constructed to invade the transmission channel through the feed groove.

10. The print head device according to claim 2, wherein: The first moving member is configured to move along the second direction; The first bracket has a bottom end, and the first moving member is arranged at the bottom end; The first moving member is provided with a guide hole along the first direction, a guide column is provided through the guide hole and passes through the bottom end to be fixedly connected with the first bracket, and the guide column is constructed to be received in the guide hole when the first moving member moves along the second direction.

11. The print head device according to claim 10, wherein: The first moving part includes a force-bearing end and a connecting end spaced apart along the second direction, the force-bearing end is configured to contact the second moving part, the connecting end is configured to connect to the material-breaking part, and the guide hole is located between the force-bearing end and the connecting end.

12. The print head device according to claim 2, wherein: The second moving member comprises: A first end portion, the first end portion being rotatably connected to the first bracket via a rotating shaft; a second end portion, wherein the second end portion is configured to be driven to drive the second moving member to rotate along the rotating shaft; A force-applying end portion, wherein the force-applying end portion is located between the first end portion and the second end portion, the force-applying end portion is located on the side of the second moving member facing the first moving member and the transmission channel, and the force-applying end portion is in contact with the first moving member to push the first moving member.

13. The print head device according to claim 12, wherein: The print head device also includes a second reset mechanism, which is a torsion spring. The second reset mechanism is sleeved on the rotating shaft and arranged between the rotating shaft and the first end. The second reset mechanism is constructed to be in a compressed state when the material breaking piece invades the transmission channel.

14. A 3D printing device, characterized in that: It comprises a molding platform, a driving component and a print head device as described in any one of claims 1 to 13, wherein the driving component drives the print head device to move relative to the molding platform.

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