Printing head suite and three-dimensional printing equipment applying same

Abstract

The embodiment of the utility model provides a printing head kit and three-dimensional printing equipment applying the printing head kit. A conveying channel penetrates through the printing head suite in the conveying direction, the conveying channel is used for conveying consumables, and the printing head suite comprises a first material guiding assembly, a second material guiding assembly and a nozzle assembly; the second material guiding assembly and the first material guiding assembly are arranged in a spaced mode in the conveying direction, and a gap is formed between the second material guiding assembly and the first material guiding assembly; the nozzle assembly is in separable contact with the second material guide assembly; the conveying channel sequentially penetrates through the first material guiding assembly, the second material guiding assembly and the nozzle assembly in the conveying direction. The three-dimensional printing equipment comprises a three-dimensional printing main body and a printing head suite, wherein the printing head suite is connected with the three-dimensional printing main body.

Description

Technical Field

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

[0002] 3D printing is a rapid prototyping technology that uses digital model files as a basis and employs adhesive 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 thermoplastic filament, extruding it from the print head, and depositing it onto a forming platform or a previously cured layer of material to ultimately create the object. During the printing process, consumables (usually filament) are introduced through the feed end of the print head assembly and further melted and extruded at the nozzle. After entering the printhead assembly, the filament typically passes through the extrusion mechanism and reaches the nozzle. The nozzle usually has a physical transport channel for zoned heat treatment of the filament. However, in the section between the filament entering the printhead mechanism and not yet entering the nozzle, the filament needs to be exposed to be gripped and advanced by gears and / or cut by a cutter. If a non-integrated physical transport channel is used in this area, the filament may shift during transport, negatively impacting the printing process. Conversely, if an integrated physical transport channel is used in this area, installation and disassembly become difficult, especially when filament blockage or replacement is required, making disassembly and maintenance extremely challenging. How to solve these problems is a question that those skilled in the art need to consider. Utility Model Content

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

[0004] This application embodiment provides a printhead assembly, in which a transmission channel is disposed along the transmission direction through the printhead assembly. The transmission channel is used to transmit consumables. The printhead assembly includes:

[0005] First feeding assembly;

[0006] The second material guiding component is disposed at a distance from the first material guiding component along the conveying direction and has a gap therebetween;

[0007] A nozzle assembly that is detachably in contact with the second feed assembly;

[0008] The transmission channel passes sequentially through the first material guiding component, the second material guiding component, and the nozzle component along the transmission direction.

[0009] In one embodiment, the printhead assembly further includes:

[0010] Mounting bracket for mounting the nozzle assembly and / or the first feed assembly;

[0011] The second material guiding assembly is detachably connected to the mounting bracket.

[0012] In one embodiment, the mounting bracket includes:

[0013] A frame for mounting the nozzle assembly and / or the first feed assembly;

[0014] A cover body, which is detachably connected to the frame body;

[0015] The second material guiding assembly is detachably connected to the frame and / or the cover.

[0016] In one embodiment, the second material guiding assembly is detachably connected to the cover;

[0017] The cover has a protruding post and two grooves, the two grooves are configured to be located on both sides of the transmission channel, and the protruding post protrudes towards one side of the frame.

[0018] The protrusion and the groove are used to engage the cover with the second material guiding assembly.

[0019] In one embodiment, the first feeding assembly includes:

[0020] A first material guiding section includes a first contoured end that is close to the second material guiding assembly along the conveying direction, and the width of the first contoured end along the clamping direction gradually decreases toward the side where the second material guiding section is located along the conveying direction.

[0021] The first connecting part is connected to the first material guiding part and is used to be detachably connected to the frame of the printhead assembly;

[0022] The transmission channel is provided through the first material guide section.

[0023] In one embodiment, the second feeding assembly includes:

[0024] The second material guiding section includes a second contoured end that is close to the first material guiding component along the conveying direction, and the conveying channel is disposed through the second material guiding section;

[0025] The width of the second conforming end along the clamping direction gradually decreases towards the side where the first material guiding component is located along the transmission direction.

[0026] In one embodiment, the second feeding assembly further includes:

[0027] The second connecting part is connected to the second material guide part and is located on the side of the second material guide part away from the first material guide part along the transmission direction. The second connecting part is used to detachably connect to the cover of the printhead assembly.

[0028] The second connecting part includes two legs, which are located on opposite sides of the second material guide part along the clamping direction.

[0029] In one embodiment, the cover includes a protrusion and two grooves;

[0030] A connecting hole is formed on the second material guide section, and the protrusion is detachably disposed in the connecting hole;

[0031] The two legs are detachably disposed in the two grooves.

[0032] In one embodiment, the printhead assembly further includes:

[0033] A material cutting assembly, comprising a material cutting element for cutting off consumables;

[0034] The second guide section has a cutting through hole that extends through it along the clamping direction. The cutting through hole is connected to the transmission channel and is used to allow the cut-off piece to pass through.

[0035] In one embodiment, the printhead assembly further includes:

[0036] An extrusion assembly comprising at least two extrusion rollers, wherein the at least two extrusion rollers are disposed at the gap;

[0037] At least two of the extrusion rollers are located on opposite sides of the transmission channel for extruding consumables.

[0038] This application also provides a stereo printing device, which includes a stereo printing body and a printhead assembly as described in any of the foregoing embodiments, wherein the printhead assembly is connected to the stereo printing body.

[0039] Furthermore, in the printhead kit and 3D printing equipment using the present application, the transmission channel sequentially passes through the first guide assembly, the second guide assembly, and the nozzle assembly along the transmission direction. Before the consumable enters the printhead kit but before entering the nozzle assembly, the first and second guide assemblies can cooperate to guide the consumable. The first and second guide assemblies are spaced apart along the transmission direction and have a gap, allowing at least a portion of the consumable to be exposed through the gap. This exposed portion can be clamped by the extrusion assembly to push the consumable. Simultaneously, the first and second guide assemblies are located on opposite sides of the gap, ensuring that the consumable is partially exposed while still achieving good consumable guidance. The second guide assembly is detachably in contact with the nozzle assembly. The second guide assembly in contact with the nozzle assembly can prevent the consumable from being exposed in this section, improving the consumable guiding effect. The detachable second guide assembly facilitates the disassembly and replacement of the nozzle assembly and / or the second guide assembly, improving the practicality of the printhead kit and the convenience of installation or maintenance. Attached Figure Description

[0040] Figure 1 This is a perspective view of the printhead kit provided in an embodiment of this application.

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

[0042] Figure 3 This is a partial perspective view of the printhead kit provided in an embodiment of this application.

[0043] Figure 4 This is a partial perspective view of the printhead kit provided in an embodiment of this application.

[0044] Figure 5 This is a perspective view of the printhead kit and the second feed assembly provided in the embodiments of this application.

[0045] Figure 6 This is a perspective view of the printhead kit and the second feed assembly provided in the embodiments of this application.

[0046] Figure 7 This is a perspective view of the printhead kit and the second feed assembly provided in the embodiments of this application.

[0047] Figure 8 A schematic diagram of a stereoscopic printing device provided in an embodiment of this application.

[0048] Explanation of main component symbols

[0049] Printhead Kit 10

[0050] Transmission Channel 100

[0051] First feeding assembly 11

[0052] First Material Feeding Section 111

[0053] First conforming end 112

[0054] First connecting part 113

[0055] First through hole 114

[0056] First contoured arc surface 115

[0057] 116

[0058] Second feeding assembly 12

[0059] Second feeding section 121

[0060] Second contouring end 122

[0061] Second connecting part 123

[0062] Second through hole 124

[0063] Second contoured arc surface 125

[0064] support leg 126

[0065] Connection hole 127

[0066] Cutting through hole 128

[0067] Mounting rack 13

[0068] Frame 131

[0069] Cover 132

[0070] 1321 protruding post

[0071] Groove 1322

[0072] Nozzle assembly 14

[0073] Heat dissipation unit 141

[0074] Nozzle section 142

[0075] Extrusion component 15

[0076] Extrusion Roller 151

[0077] Material cutting component 16

[0078] Broken part 161

[0079] Push component 162

[0080] 163cm swing arm

[0081] Gap 17

[0082] 3D printing equipment 1

[0083] 3D Printed Body 19

[0084] Molding platform 191

[0085] X-axis drive assembly 192

[0086] Gantry Frame 193

[0087] Transmission direction Z

[0088] Clamping direction X

[0089] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this application. Detailed Implementation

[0090] 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.

[0091] Typically, 3D printing is a rapid prototyping technology that uses digital model files as a basis and employs adhesive 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 thermoplastic filament, extruding it from the print head, and depositing it onto a forming platform or a previously cured layer of material to ultimately create the object. During the printing process, consumables (usually filament) are introduced through the feed end of the print head assembly and further melted and extruded at the nozzle. After entering the printhead assembly, the filament typically passes through the extrusion mechanism and reaches the nozzle. The nozzle usually has a physical transport channel for zoned heat treatment of the filament. However, in the section between the filament entering the printhead mechanism and not yet entering the nozzle, the filament needs to be exposed to be gripped and advanced by gears and / or cut by a cutter. If a non-integrated physical transport channel is used in this area, the filament may shift during transport, negatively impacting the printing process. Conversely, if an integrated physical transport channel is used in this area, installation and disassembly become difficult, especially when filament blockage or replacement is required, making disassembly and maintenance extremely challenging. How to solve these problems is a question that those skilled in the art need to consider.

[0092] Correspondingly, embodiments of this application provide a printhead kit and a 3D printing device using the same. A transmission channel is disposed through the printhead kit along the transmission direction, the transmission channel being used to transmit consumables. The printhead kit includes a first guide assembly, a second guide assembly, and a nozzle assembly. The second guide assembly is spaced apart from the first guide assembly along the transmission direction and has a gap. The nozzle assembly is in detachable contact with the second guide assembly. The transmission channel sequentially passes through the first guide assembly, the second guide assembly, and the nozzle assembly along the transmission direction. The 3D printing device includes a 3D printing body and a printhead kit, the printhead kit being connected to the 3D printing body.

[0093] Furthermore, in the printhead kit and 3D printing equipment using the present application, the transmission channel sequentially passes through the first guide assembly, the second guide assembly, and the nozzle assembly along the transmission direction. Before the consumable enters the printhead kit but before entering the nozzle assembly, the first and second guide assemblies can cooperate to guide the consumable. The first and second guide assemblies are spaced apart along the transmission direction and have a gap, allowing at least a portion of the consumable to be exposed through the gap. This exposed portion can be clamped by the extrusion assembly to push the consumable. At the same time, the first and second guide assemblies are located on opposite sides of the gap, ensuring that the consumable is partially exposed while still achieving good consumable guidance. The second guide assembly is detachably in contact with the nozzle assembly. The second guide assembly in contact with the nozzle assembly can prevent the consumable from being exposed in this section, improving the consumable guiding effect. The detachable second guide assembly facilitates the disassembly and replacement of the nozzle assembly and / or the second guide assembly, improving the practicality of the printhead kit and the convenience of installation or maintenance.

[0094] As will be understood by those skilled in the art, “stereoprinting” refers to a technology that constructs objects by printing layer by layer using powdered metal or plastic and other adhesive materials based on digital model files.

[0095] 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.

[0096] The specific embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0097] like Figures 1 to 7 As shown, this application embodiment provides a printhead assembly 10. A transmission channel 100 is disposed through the printhead assembly 10 along the transmission direction Z, and the transmission channel 100 is used to transmit consumables (not shown). The printhead assembly 10 includes a first guide assembly 11, a second guide assembly 12, a mounting frame 13, a nozzle assembly 14, an extrusion assembly 15, and a cutting-off assembly 16. The first guide assembly 11, the second guide assembly 12, the nozzle assembly 14, the extrusion assembly 15, and the cutting-off assembly 16 are respectively connected to the mounting frame 13. The first guide assembly 11 is configured to communicate with the feed end of the printhead assembly 10. The consumables enter the printhead assembly 10 from the first guide assembly 11 and pass through the extrusion assembly 15, the second guide assembly 12, and the nozzle assembly 14 in sequence. The cutting-off assembly 16 is movably connected to the mounting frame 13 and extends into or out of the transmission channel 100 in a controlled manner.

[0098] In one embodiment, the first material guiding assembly 11 and the second material guiding assembly 12 are spaced apart along the conveying direction Z and have a gap 17; the nozzle assembly 14 is in separable contact with the second material guiding assembly 12; the conveying channel 100 passes through the first material guiding assembly 11, the second material guiding assembly 12 and the nozzle assembly 14 sequentially along the conveying direction Z.

[0099] In this embodiment, after the consumable material passes through the first guide assembly 11 along the transmission channel 100, it passes through the gap 17 and enters the second guide assembly 12. The extrusion assembly 15 is set corresponding to the gap 17 and is used to contact the consumable material to squeeze and push the consumable material. The transmission channel 100 passes through the first guide assembly 11, the extrusion assembly 15, the second guide assembly 12 and the nozzle assembly 14 in sequence along the transmission direction Z.

[0100] Furthermore, the transmission channel 100 sequentially passes through the first guide assembly 11, the second guide assembly 12, and the nozzle assembly 14 along the transmission direction Z. Before the consumable enters the printhead assembly 10 and before entering the nozzle assembly 14, the first guide assembly 11 and the second guide assembly 12 can cooperate to guide the consumable. The first guide assembly 11 and the second guide assembly 12 are spaced apart along the transmission direction Z and have a gap 17. At least a portion of the consumable can be exposed through the gap 17, and this exposed portion can be used to be clamped by the extrusion assembly 15 to push the consumable. At the same time, the first guide assembly 11 and the second guide assembly 12 are located on opposite sides of the gap 17, which ensures that the consumable is partially exposed while still achieving consumable guidance. The second feed guide assembly 12 is detachably in contact with the nozzle assembly 14. The second feed guide assembly 12 in contact with the nozzle assembly 14 can prevent the consumable from being exposed in this section, improve the consumable guiding effect, and the detachable second feed guide assembly 12 makes the nozzle assembly 14 and / or the second feed guide assembly 12 easier to disassemble and replace, improving the practicality of the printhead kit 10 and the convenience of installation or maintenance.

[0101] In this embodiment, the nozzle assembly 14 includes a nozzle portion 142 and a heat dissipation portion 141. The heat dissipation portion 141 is detachably connected to the mounting bracket 13, and the nozzle portion 142 is connected to the heat dissipation portion 141. The nozzle portion 142 is used to heat a portion of the consumable material and melt and extrude it, while the heat dissipation portion 141 is used to dissipate heat from a portion of the consumable material to prevent premature melting and blockage.

[0102] In one embodiment, the mounting bracket 13 is used to mount the nozzle assembly 14 and / or the first feed guide assembly 11, and the second feed guide assembly 12 is detachably connected to the mounting bracket 13.

[0103] In this embodiment, the first material guiding assembly 11 and the second material guiding assembly 12 are configured to be spaced apart. The first material guiding assembly 11 and the second material guiding assembly 12 are detachably connected to the mounting frame 13, and the nozzle assembly 14 can also be configured to be detachably connected to the mounting frame 13. That is, the first material guiding assembly 11, the second material guiding assembly 12, and the nozzle assembly 14 are all mounted through the mounting frame 13 and can be detachably connected to the mounting frame 13.

[0104] In other embodiments, the first feed assembly 11 and the nozzle assembly 14 may also be configured to be fixedly connected to the mounting frame 13, and the second feed assembly 12 located between the first feed assembly 11 and the nozzle assembly 14 may be configured to be detachably connected to the mounting frame 13.

[0105] Understandably, the second material guide assembly 12 is located between the first material guide assembly 11 and the nozzle assembly 14 along the transmission direction Z. The second material guide assembly 12 is constructed to be detachable. By disassembling the second material guide assembly 12, the opening and closing state of this section of the transmission channel 100 can be adjusted, which is convenient for installation or maintenance.

[0106] In one embodiment, the mounting bracket 13 includes a frame 131 and a cover 132. The frame 131 is used to mount the nozzle assembly 14 and / or the first feed guide assembly 11, the cover 132 is detachably connected to the frame 131, and the second feed guide assembly 12 is detachably connected to the frame 131 and / or the cover 132.

[0107] In this embodiment, the frame 131 is the main load-bearing structure of the printhead assembly 10, and the printhead assembly 10 is movably connected to the X-axis drive assembly 192 of the 3D printing equipment 1 through the frame 131. The cover 132 is detachably connected to the frame 131, and the second material guide assembly 12 and the material cut-off assembly 16 are detachably connected to the cover 132. The cover 132 and the frame 131 cooperate to form a receiving cavity with a certain space (not shown in the figure). The transmission channel 100 is arranged through the receiving cavity. The first material guide assembly 11, the second material guide assembly 12, the extrusion wheel 151 of the extrusion assembly 15, the material cut-off component 161 of the material cut-off assembly 16, etc. can all be arranged in the receiving cavity. The cover 132 and the frame 131 cooperate to cover the various components in the receiving cavity, thereby achieving protection and improving aesthetics.

[0108] Understandably, by setting up a detachable frame 131 and cover 132, and simultaneously installing the first material guide assembly 11, the nozzle assembly 14, and the extrusion assembly 15 on the frame 131, and installing the second material guide assembly 12 and the material cut-off assembly 16 on the cover 132, after all components are installed, the printhead kit 10 can be installed or removed by installing or removing the frame 131 and cover 132.

[0109] In one embodiment, the transmission channel 100 is disposed through the first material guide 111, and the first material guide assembly 11 includes the first material guide 111 and the first connecting part 113.

[0110] In one embodiment, the first guide section 111 includes a first contoured end 112 that approaches the second guide section 121 along the transport direction Z. The width of the first contoured end 112 along the clamping direction X gradually decreases along the transport direction Z toward the side where the second guide section 121 is located. The first connecting section 113 is connected to the first guide section 111 and is used for detachably connecting to the frame 131 of the printhead assembly 10.

[0111] In this embodiment, the first guide section 111 extends generally along the transmission direction Z. A first through hole 114 is formed within the first guide section 111, extending along the transmission direction Z, to construct a physical transmission channel 100 within the first guide assembly 11 capable of guiding and protecting consumables. A first connecting section 113 is connected to the first guide section 111 and located at the end of the first guide section 111 away from the second guide assembly 12. The first connecting section 113 has a latching protrusion 116 protruding towards the side opposite to the transmission channel 100. The latching protrusion 116 can extend into the corresponding latching position on the frame 131 and connect with the first guide assembly 11.

[0112] Understandably, the transmission channel 100 is configured to pass through the first contouring end 112, with the tip of the first contouring end 112 located in the middle. The transmission channel 100 extends from the tip of the first contouring end 112. The width of the first contouring end 112 along the clamping direction X on both sides of the transmission channel 100 gradually decreases from the tip of the first contouring end 112 along the transmission direction Z towards the direction away from the second guide assembly 12. Specifically, both sides of the first contouring end 112 have a first contouring arc surface 115, which corresponds to the arc-shaped outer contour of the extrusion wheel 151 of the extrusion assembly 15. This is used to avoid the extrusion wheel 151 when clamping the consumable, while simultaneously extending the transmission channel 100 as much as possible along the transmission direction Z to improve the guiding accuracy of the consumable.

[0113] In one embodiment, the second material guiding assembly 12 includes a second material guiding section 121 and a second connecting section 123, and the transmission channel 100 is disposed through the second material guiding section 121.

[0114] In one embodiment, the second guide section 121 includes a second contoured end 122 that is close to the first guide section 111 along the transmission direction Z. The transmission channel 100 is disposed through the first guide section 111. The width of the second contoured end 122 along the clamping direction X gradually decreases along the transmission direction Z toward the side where the first guide section 111 is located.

[0115] In one embodiment, the second connecting part 123 is connected to the second guiding part 121 and is located on the side of the second guiding part 121 away from the first guiding part 111 along the transmission direction Z. The second connecting part 123 is used to detachably connect to the cover 132 of the printhead kit 10.

[0116] In this embodiment, the second guide section 121 extends generally along the conveying direction Z, and a second through hole 124 is formed in the second guide section 121, which is used to construct a physical conveying channel 100 within the second guide assembly 12 that can guide and protect the consumables. The second connecting section 123 is connected to the second guide section 121 and is located at the end of the second guide section 121 away from the first guide assembly 11.

[0117] Understandably, the transmission channel 100 passes through the second contouring end 122, with the tip of the second contouring end 122 located in the middle. The transmission channel 100 enters from the tip of the second contouring end 122. The width of the second contouring end 122 along the clamping direction X on both sides of the transmission channel 100 gradually decreases from the tip of the second contouring end 122 along the transmission direction Z towards the direction away from the first guide assembly 11. Specifically, both sides of the second contouring end 122 have a second contouring arc surface 125, which corresponds to the arc-shaped outer contour of the extrusion wheel 151 of the extrusion assembly 15. This is used to avoid the extrusion wheel 151 when clamping the consumable, while extending the transmission channel 100 as much as possible along the transmission direction Z to improve the guiding accuracy of the consumable.

[0118] In one embodiment, the extrusion assembly 15 includes at least two extrusion rollers 151 disposed at the gap 17. The at least two extrusion rollers 151 are located on opposite sides of the transport channel 100 for extruding consumables.

[0119] In this embodiment, the first contouring end 112 and the second contouring end 122 are spaced apart with their tips facing each other. The first contouring arc surface 115 and the second contouring arc surface 125 located on the same side along the clamping direction X are approximately corresponding to the outer contour of an extrusion wheel 151 located on that side.

[0120] Understandably, the transmission channel 100 passes between the two extrusion rollers 151, allowing the consumable to be clamped by the two extrusion rollers 151 for pushing. The consumable is clamped at the closest position between the two extrusion rollers 151, which corresponds to the gap 17. The area between the two extrusion rollers 151 where the consumable is not clamped may be filled by the first contouring end 112 and the second contouring end 122, so that the consumable can be placed in the transmission channel 100 as much as possible when it does not need to be clamped.

[0121] In one embodiment, a protrusion 1321 and two grooves 1322 are formed on the cover 132. The two grooves 1322 are configured to be located on both sides of the transmission channel 100, respectively. The protrusion 1321 protrudes toward the side of the frame 131. The protrusion 1321 and the grooves 1322 are used to engage the cover 132 with the second material guide assembly 12.

[0122] In this embodiment, the protrusion 1321 and the two grooves 1322 are both disposed on the side of the cover 132 facing the frame 131. The protrusion 1321 protrudes from the side facing the frame 131 and can be circular, square, or other irregular shapes. The two grooves 1322 are disposed closer to the transmission channel 100 than the protrusion 1321. The two grooves 1322 are spaced apart along the clamping direction X, and the space between the two grooves 1322 can be used to avoid the nozzle assembly 14, especially to avoid the part of the nozzle assembly 14 that contacts the second guide assembly 12.

[0123] In one embodiment, the second connecting portion 123 includes two legs 126, which are located on opposite sides of the second guiding portion 121 along the clamping direction X. The legs 126 can extend into the corresponding grooves 1322 of the cover 132 and connect with the second guiding assembly 12. The two legs 126 are detachably disposed in the two grooves 1322. A connecting hole 127 is formed on the second guiding portion 121, and a protrusion 1321 is detachably disposed in the connecting hole 127.

[0124] In this embodiment, the second through hole 124 penetrates the second guide section 121, and the two supports 126 are located on opposite sides of the second guide section 121 along the clamping direction X, to avoid consumables passing through the second through hole 124. The two supports 126 can also be configured to be arranged along the conveying direction Z to enhance the installation stability of the second guide assembly 12 mounted on the cover 132 along the conveying direction Z. When the second guide assembly 12 contacts and engages with the nozzle assembly 14, the portion of the nozzle assembly 14 with the conveying channel 100 is located between the two supports 126.

[0125] In this embodiment, the second material guiding part 121 has a connecting hole 127 on its side facing the cover 132. The connecting hole 127 can be a blind hole structure or a through groove structure, and the protrusion 1321 is constructed so as not to invade the second through hole 124. The connecting hole 127 and the two support legs 126 are respectively located on the three sides of the second material guiding assembly 12 surrounding the second through hole 124, which can be used to enhance the installation stability of the second material guiding assembly 12 installed on the cover 132.

[0126] Understandably, the second material guide assembly 12 and the cover 132 can be slidably connected. When the second material guide assembly 12 slides into place, the protrusion 1321 can be precisely embedded in the connection hole 127, thereby fixing the second material guide assembly 12 and the cover 132 and improving the ease of installation.

[0127] In one embodiment, the material cutting assembly 16 includes a material cutting element 161 for cutting consumables. The second material guiding part 121 has a cutting through hole 128 extending through it in the clamping direction X. The cutting through hole 128 communicates with the transmission channel 100 and allows the material cutting element 161 to pass through.

[0128] In this embodiment, the material cutting assembly 16 further includes a swing arm 163 and a pusher 162. The swing arm 163 and the pusher 162 are movably connected to the cover 132, and the material cutting component 161 is connected to the pusher 162. The swing arm 163 is driven by an external force to move the pusher 162 in the direction of the transmission channel 100. The pusher 162 drives the material cutting component 161 to extend from the cutter through hole 128 into the second guide section 121, thereby achieving material cutting. The cutter through hole 128 can guide the cutting process of the material cutting component 161, improving the material cutting accuracy.

[0129] In this embodiment, the cutter through hole 128 is provided through the second guide section 121 along the clamping direction X; in other embodiments, the cutter through hole 128 may be provided in other directions that intersect or are perpendicular to the transmission channel 100.

[0130] Understandably, the second material guiding assembly 12 is configured to have multiple guiding functions, including but not limited to guiding consumables and / or guiding the broken part 161. In actual production, the second material guiding assembly 12 needs to meet many requirements, and these requirements may change. Therefore, the second material guiding assembly 12 is configured to be detachably connected to the cover 132 to facilitate replacement of the second material guiding assembly 12, for example, replacing it with a second material guiding assembly 12 with a cutter through hole 128 and / or a second through hole 124 of different sizes or orientations.

[0131] This application also provides a stereo printing device 1, which includes a stereo printing body 19 and a printhead assembly 10 as described in any of the foregoing embodiments, wherein the printhead assembly 10 is connected to the stereo printing body 19.

[0132] Further integration Figure 8 As shown, in one embodiment, the stereo printing body 19 includes a forming platform 191, an X-axis drive assembly 192, and a gantry 193. The forming platform 191 and the X-axis drive assembly 192 are respectively connected to the gantry 193. The print head assembly 10 is movably connected to the X-axis drive assembly 192. The print head assembly 10 can move relative to the forming platform 191 to perform stereo printing.

[0133] 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 assembly, characterized by, A transmission channel is arranged through the print head assembly along a transmission direction for transmitting a consumable, the print head assembly comprising: a first material guiding assembly; a second material guiding assembly spaced apart from the first material guiding assembly along the transmission direction with a gap; a nozzle assembly separably contacted with the second material guiding assembly; wherein the transmission channel sequentially passes through the first material guiding assembly, the second material guiding assembly and the nozzle assembly along the transmission direction.

2. The printhead package of claim 1, wherein, The print head assembly further comprises: a mounting frame for mounting the nozzle assembly and / or the first material guiding assembly; the second material guiding assembly is detachably connected with the mounting frame.

3. The printhead assembly of claim 2, wherein, The mounting frame comprises: a frame body for mounting the nozzle assembly and / or the first material guiding assembly; a cover body detachably connected with the frame body; the second material guiding assembly is detachably connected with the frame body and / or the cover body.

4. The printhead assembly of claim 3, wherein The second material guiding assembly is detachably connected with the cover body; the cover body is formed with a protruding column and two recesses, the two recesses are configured to be respectively located at two sides of the transmission channel, and the protruding column protrudes towards one side of the frame body; the protruding column and the recesses are used for clamping the cover body and the second material guiding assembly.

5. The printhead package of claim 1, wherein, The first material guiding assembly comprises: a first material guiding portion comprising a first profiled end close to the second material guiding assembly along the transmission direction, the first profiled end gradually decreases in width along the clamping direction towards one side of the second material guiding assembly along the transmission direction; a first connecting portion connected with the first material guiding portion and used for detachably connecting with the frame body of the print head assembly; the transmission channel passes through the first material guiding portion.

6. The printhead package of claim 1, wherein, The second material guiding assembly comprises: a second material guiding portion comprising a second profiled end close to the first material guiding assembly along the transmission direction, and the transmission channel passes through the second material guiding portion; the second profiled end gradually decreases in width along the clamping direction towards one side of the first material guiding assembly along the transmission direction.

7. The printhead assembly of claim 6, wherein The second material guiding assembly further comprises: a second connecting portion connected with the second material guiding portion and located on one side of the second material guiding portion away from the first material guiding assembly along the transmission direction, the second connecting portion is used for detachably connecting with the cover body of the print head assembly; the second connecting portion comprises two legs, and the two legs are located on two opposite sides of the second material guiding portion along the clamping direction.

8. The printhead assembly of claim 7, wherein, The cover body comprises a protruding column and two recesses; the second material guiding portion is formed with a connecting hole, and the protruding column is detachably arranged in the connecting hole; the two legs are respectively detachably arranged in the two recesses.

9. The printhead package of claim 6, wherein, The print head assembly further comprises: a material breaking assembly comprising a material breaking piece for cutting off the consumable; the second material guiding portion is formed with a cutter through hole arranged through the second material guiding portion along the clamping direction, the cutter through hole is communicated with the transmission channel, and the cutter through hole is used for allowing the material breaking piece to pass through.

10. The printhead package of claim 1, wherein, The print head assembly further comprises: an extrusion assembly comprising at least two extrusion wheels, and the at least two extrusion wheels are arranged at the gap; At least two of the extrusion wheels are located on opposite sides of the transport channel for extruding consumable material.

11. A stereolithography apparatus, characterized in that A stereolithography apparatus comprising a stereolithography body and a print head assembly as claimed in any one of claims 1 to 10, the print head assembly being connected to the stereolithography body.

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