Printhead kit and the three-dimensional printing device using it

Abstract

Printhead kit, characterized in that the printhead kit comprises the following: a support comprising a plate body and a sliding section connected to each other; a nozzle arrangement comprising a heat dissipation part, wherein the heat dissipation part is detachably connected to the holder; wherein the heat dissipation part comprises a connecting arm and a slide, wherein the connecting arm and the plate body are designed in such a way that they can be detachably connected to each other, and wherein the slide and the sliding section are designed in such a way that they are slidably connected to each other.

Description

TECHNICAL AREA

[0001] The present application relates to the field of three-dimensional printing and in particular to a printhead kit and a three-dimensional printing device that uses it. STATE OF THE ART

[0002] Three-dimensional printing technology is based on digital model files and utilizes specialized wax materials, metal or plastic powders, and other bondable materials. Rapid prototyping technology is employed to create three-dimensional objects by printing layers of material. Fused Deposition Modeling (FDM) is one of the most important three-dimensional printing technologies. This technology heats and melts the hot-melt filament, extrudes it from the print head, and deposits it onto the build platform or the previous layer of solidified material to ultimately create a physical object.During the printing process, the consumable material (usually filament) must be fed from the printhead's feed end, melted, and extruded at the nozzle. This process requires that the consumable material be melted and extruded at the nozzle while simultaneously preventing the material further away from the nozzle from expanding due to premature heat and causing a blockage. Therefore, it is typically necessary to incorporate a heat dissipation component on the nozzle assembly to facilitate heat dissipation. This heat dissipation component can also serve as a connection point to other structures, simplifying the subsequent disassembly and assembly of the printhead. Consequently, the engineer must carefully consider how to design a suitable connection structure to ensure both ease of disassembly and assembly, as well as the stability of the assembly. CONTENTS OF THE PRESENT USE SAMPLE

[0003] To solve the problems of the prior art, an embodiment of the present application provides a printhead kit and a three-dimensional printing device that uses it.

[0004] One embodiment of the present application provides a printhead kit comprising the following: a support comprising a plate body and a sliding section connected to each other; a nozzle arrangement comprising a heat dissipation part, wherein the heat dissipation part is detachably connected to the holder; wherein the heat dissipation part comprises a connecting arm and a slide, wherein the connecting arm and the plate body are designed in such a way that they can be detachably connected to each other, and wherein the slide and the sliding section are designed in such a way that they are slidably connected to each other.

[0005] In one embodiment, the slide is provided to include a projecting section that extends along a first direction; wherein the sliding section is provided with a sliding groove formed by a recess along a first direction, wherein the protruding section is slidably arranged in the sliding groove; wherein the heat dissipation part is designed such that it can be arranged to be displaceable with the holder along a second direction, the first direction intersecting the second direction.

[0006] In one embodiment, the sliding section is arranged on one side of the plate body along the second direction, with the nozzle arrangement being arranged on one side of the sliding section along the third direction, the third direction intersecting the first direction and the second direction; wherein the carriage is arranged at the end of the heat dissipation part along the third direction, wherein the connecting arm is extended along the third direction, and wherein the connecting arm is detachably connected to the plate body.

[0007] In one embodiment, the plate body is provided with a first mounting hole that penetrates it along the second direction; wherein the connecting arm is provided with a second mounting hole that penetrates it along the second direction; wherein the first mounting hole and the second mounting hole are designed to communicate along the second direction.

[0008] In one embodiment, the heat dissipation part also includes a heat dissipation body, wherein the connecting arm and the slide are each connected to the heat dissipation body; wherein the heat dissipation body and the plate body are spaced apart from each other along the second direction, wherein the heat dissipation body is provided with a third mounting hole that penetrates it along the second direction; wherein the first mounting hole, the second mounting hole and the third mounting hole are designed to communicate along the second direction; wherein the printhead assembly also includes a mounting bolt, wherein the mounting bolt passes successively through the first mounting hole, the second mounting hole and the third mounting hole along the second direction, wherein the outer diameter of the mounting bolt is smaller than the inner diameter of the third mounting hole.

[0009] In one embodiment, the connecting arm is arranged between the heat dissipation body and the plate body, connecting the heat dissipation body to the plate body; wherein the connecting arm includes a bending section, wherein the bending section is connected to the heat dissipation body; wherein the connecting arm further comprises a plant section, wherein the plant section is connected to the bending section, wherein the second mounting hole is provided in the plant section.

[0010] In one embodiment, the heat dissipation body extends along the third direction, with the system section and the plate body extending along the third direction; wherein the extension direction of the bending section intersects the second direction and the third direction, the bending section being provided with a deformation sensor. In one embodiment, a first mounting ring is provided on the plate body, the first mounting ring being arranged around the first mounting hole; wherein the inner diameter of the second mounting hole is larger than the outer diameter of the first mounting ring, the first mounting ring being arranged in the second mounting hole.

[0011] In one embodiment, a second mounting ring is provided on the connecting arm, wherein the second mounting ring is provided on a side of the connecting arm facing away from the plate body; wherein a second mounting ring is arranged around the second mounting hole, wherein a first internal thread is arranged within the second mounting ring; wherein the printhead assembly also includes a mounting bolt, wherein the mounting bolt passes through the first mounting hole, the second mounting hole and the second mounting ring along the second direction, wherein the outer surface of the mounting bolt is provided with a first external thread, wherein the first internal thread engages with the first external thread.

[0012] In one embodiment, the plate body is provided with a first mounting hole that penetrates it along the second direction; wherein the connecting arm is provided with a connecting column extending along the second direction, the connecting column being designed such that it passes through the first mounting hole along the second direction; wherein the printhead assembly further comprises a connecting ring, wherein the connecting ring is arranged on a side of the plate body facing away from the connecting arm along the second direction, wherein the connecting ring is detachably connected to the connecting column; wherein the outer surface of the connecting column is provided with a second external thread, wherein the inner surface of the connecting ring is provided with a second internal thread, wherein the second internal thread engages with the second external thread.

[0013] An embodiment of the present application also provides a three-dimensional printing device comprising a three-dimensional print body and a printhead assembly according to one of the above-mentioned embodiments, wherein the printhead assembly is connected to the three-dimensional print body.

[0014] It is understood that in the printhead assembly and the three-dimensional printing device of the present application, the printhead assembly comprises a holder and a nozzle assembly with a double connection and a mating relationship, wherein the heat dissipation part of the nozzle assembly is used for heat dissipation on the one hand and can be designed to be detachably connected to the holder on the other. The carriage and the sliding section are designed to be slidably connected to one another, so that the nozzle assembly and the holder can be conveniently and detachably connected by sliding; at the same time, the connecting arm and the plate body are designed to be detachably connected to one another, and the nozzle assembly and the holder can be locked after the nozzle assembly and the holder have been slidably fitted, so that the connection between the nozzle assembly and the holder is more stable. BRIEF DESCRIPTION OF THE DRAWING Fig. Figure 1 is a schematic perspective view of a printhead assembly provided by an embodiment of the present application. Fig. Figure 2 is a schematic perspective view of a holder of a printhead kit provided by an embodiment of the present application. Fig. Figure 3 is a schematic perspective view of a heat dissipation part of a printhead kit provided by an embodiment of the present application. Fig. Figure 4 is a schematic perspective view of a heat dissipation part of a printhead kit provided by an embodiment of the present application, from a different perspective. Fig. Figure 5 is a schematic structural representation of a printhead assembly provided by an embodiment of the present application. Fig. Figure 6 is a schematic structural representation of a printhead assembly provided by another embodiment of the present application. Fig. Figure 7 is a schematic structural representation of a printhead assembly provided by a further embodiment of the present application. Fig. Figure 8 is a schematic structural representation of a printhead assembly provided by a further embodiment of the present application. Fig. Figure 9 is a schematic representation of a three-dimensional printing device provided by an embodiment of the present application. List of reference symbols for the main elements 10 Printhead Kit 11 bracket 111 plate bodies 1110 First mounting hole 1111 First mounting ring 112 Sliding section 1120 Sliding groove 12 nozzle arrangement 121 Heat dissipation section 1210 Third mounting hole 1211 Heat dissipation body 1212 Heat dissipation fin 122 sleds 1221 Foreground section 123 Connecting arm 1230 Second mounting hole 1231 Bend section 1232 Plant section 1233 Second mounting ring 1234 First internal thread 1235 Connecting column 1236 Second external thread 124 Nozzle section 131 fastening bolts 1311 First external thread 132 Connecting ring 1321 Second internal thread 14 Extrusion component 141 Extrusion drive section 15 Electronic control component 151 Electrical board section 152 Electrical interface 16 Deformation sensor 1 Three-dimensional printing device 19 Three-dimensional printed body 191 Mold platform 192 X-axis drive component 193 Portal frames X First direction Y Second direction Third direction

[0015] The following specific implementations will further illustrate the present application in conjunction with the drawings mentioned above. DETAILED DESCRIPTION

[0016] The following description refers to the accompanying drawings to describe the content of the present application in more detail. The drawings show exemplary embodiments of the present application. However, the present application can be implemented in many different forms and should not be interpreted as being limited to the exemplary embodiments shown herein. These exemplary embodiments are provided to ensure that the present application is thorough and complete and fully conveys its scope to the person skilled in the art. Identical reference numerals denote identical or similar components. The terminology used here serves solely to describe certain exemplary embodiments and is not intended to limit the present application.The singular forms “ein”, “eine”, and “der”, “die”, “das” used herein also include the plural forms, unless the context clearly indicates otherwise. Furthermore, when used in this document for integers, steps, operations, components, and / or parts, “umfassen” and / or “beinhalten” and / or “aufweisen” exclude, but do not exclude, the existence or addition of one or more other features, areas, 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 they would normally be understood by a person skilled in the art in the field in this application.Unless expressly defined herein, terms should be interpreted as defined in general dictionaries in a manner consistent with their meaning in the relevant technology and the content of this application, and should not be interpreted as having an idealized or overly formal meaning.

[0017] In general, three-dimensional printing technology is based on digital model files and utilizes specialized wax materials, metal or plastic powders, and other bondable materials. Rapid prototyping technology is employed to create three-dimensional objects by printing layers of material. Fused Deposition Modeling (FDM) is one of the most important three-dimensional printing technologies. This technology heats and melts the hot-melt filament, extrudes it from the print head, and deposits it onto the build platform or the previous layer of solidified material to ultimately create a physical object.During the printing process, the consumable material (usually filament) must be fed from the printhead's feeder, melted, and extruded at the nozzle. This process requires that the consumable material be melted and extruded at the nozzle while simultaneously preventing the material further away from the nozzle from expanding due to premature heat and causing a blockage. Therefore, it is typically necessary to incorporate a heat dissipation component on the nozzle assembly to facilitate heat dissipation. This heat dissipation component can also serve as a connection point to other structures, simplifying the subsequent disassembly and assembly of the printhead. Consequently, the engineer must carefully consider how to design a suitable connection structure to ensure both ease of disassembly and assembly, as well as the stability of the assembly.

[0018] Accordingly, the embodiments of the present application provide a printhead assembly and a three-dimensional printing device that uses it. The printhead assembly comprises a holder and a nozzle assembly, wherein the holder comprises a plate body and a sliding section connected to one another, and wherein the nozzle assembly comprises a heat dissipation element, the heat dissipation element being detachably connected to the holder; the heat dissipation element comprising a connecting arm and a slide, the connecting arm and the plate body being configured to be detachably connected to one another, and the slide and the sliding section being configured to be slidably connected to one another. The three-dimensional printing device comprises a three-dimensional print body and a printhead assembly, the printhead assembly being connected to the three-dimensional print body.

[0019] Furthermore, in the printhead assembly and the three-dimensional printing device of the present application, the printhead assembly comprises a holder and a nozzle assembly with a double connection and a mating relationship, wherein the heat dissipation part of the nozzle assembly can be used for heat dissipation on the one hand and on the other hand be configured to be detachably connected to the holder. The carriage and the sliding section are configured to be slidably connected to one another, so that the nozzle assembly and the holder can be conveniently and detachably connected by sliding; at the same time, the connecting arm and the plate body are configured to be detachably connected to one another, and the nozzle assembly and the holder can be locked after the nozzle assembly and the holder have been slidably fitted, so that the connection between the nozzle assembly and the holder is more stable.

[0020] Experts understand that "three-dimensional printing" refers to a technology that uses a digital model file as a basis and adhesive materials such as metal or plastic powders to build objects through layer-by-layer printing. Exemplary implementations are described below with reference to the accompanying drawings. It should be noted that the components shown in the drawings are not necessarily drawn to scale; identical or similar components are designated with the same or similar reference symbols or technical terms.

[0021] The specific implementations of the present application are described in more detail below with reference to the attached drawings.

[0022] As in the Fig. Figures 1 to 4 show an embodiment of the present application providing a printhead kit 10 comprising a holder 11 and a nozzle assembly 12. The holder 11 comprises a plate body 111 and a sliding section 112, which are connected to each other; the nozzle assembly 12 comprises a heat dissipation element 121, and the heat dissipation element 121 is detachably connected to the holder 11. The heat dissipation element 121 comprises a connecting arm 123 and a slide 122, and the connecting arm 123 and the plate body 111 are designed to be detachably connected to each other, and the slide 122 and the sliding section 112 are designed to be slidably connected to each other.

[0023] It is understood that in the printhead assembly 10 and the three-dimensional printing device 1 of the present application, the printhead assembly 10 comprises a holder 11 and a nozzle assembly 12 with a double connection and a matching relationship, wherein the heat dissipation part 121 of the nozzle assembly 12 can be used for heat dissipation on the one hand and can be designed to be detachably connected to the holder 11 on the other.The slide 122 and the sliding section 112 are designed so that they can be slidably connected to each other, so that the nozzle assembly 12 and the holder 11 can be conveniently and detachably connected by sliding; at the same time, the connecting arm 123 and the plate body 111 are designed so that they can be detachably connected to each other, and the nozzle assembly 12 and the holder 11 can be locked after the nozzle assembly 12 and the holder 11 have been slidably fitted, so that the connection between the nozzle assembly 12 and the holder 11 is more stable.

[0024] In one embodiment, the printhead assembly 10 may further comprise an extrusion component 14 and an electronic control component 15, wherein the extrusion component 14 and the electronic control component 15 are each connected to the holder 11, and wherein the extrusion component 14, the nozzle assembly 12 and the electronic control component 15 cooperate to complete the extrusion of the consumable.

[0025] In one embodiment, the extrusion component 14 is arranged upstream of the consumable transport channel and is used to clamp the consumable and push it towards the die assembly 12. The extrusion component 14 comprises an extrusion drive section 141 and an extrusion gear set (not shown). The extrusion drive section 141 generates a rotational torque and can be a drive motor. The extrusion gear set includes at least one drive gear and one driven gear. The drive gear is connected to the extrusion drive section 141, and the driven gear is connected to the drive gear. Multiple drive gears and / or multiple driven gears work together to clamp and push the consumable.In one embodiment, the nozzle assembly 12 is arranged downstream of the consumable material transport channel and is used to perform heat treatment of the consumable material to melt and extrude it for three-dimensional printing. The nozzle assembly 12 comprises a heat dissipation part 121 and a nozzle section 124. The heat dissipation part 121 is detachably connected to the support 11, and the nozzle section 124 is connected to the heat dissipation part 121. The nozzle section 124 is used to heat a portion of the consumable material, melting and extruding it. The heat dissipation part 121 is used to dissipate heat from a portion of the consumable material to prevent it from melting prematurely and causing a material blockage.

[0026] In the present embodiment, the heat dissipation part 121 further comprises a heat dissipation body 1211 and a heat dissipation fin 1212, wherein the heat dissipation fin 1212, the slide 122, and the connecting arm 123 are each connected to the heat dissipation body 1211. The heat dissipation body 1211 is the main supporting structure of the heat dissipation part 1211, and the heat dissipation body 1211 is constructed as a block with a specific thickness along the second direction Y, and the consumable transport channel is arranged along the third direction Z and runs through the heat dissipation body 1211.The heat dissipation fin 1212 is used to increase the surface area of ​​the heat dissipation part 121 and thus improve the heat dissipation effect. The heat dissipation fin 1212 is designed as a thin sheet, with several heat dissipation fins 1212 arranged on two opposite sides of the heat dissipation body 1211 along the second direction Y and extending away from the heat dissipation body 1211. In the present embodiment, the slide 122 is arranged at the end of the heat dissipation body 1211 along the third direction Z. The slide 122 has a stepped structure that projects along the first direction X to both sides of the heat dissipation body 1211, and the slide 122 extends along the second direction Y to allow the heat dissipation part 1211 to slide along the second direction Y.One end of the connecting arm 123 is connected to the heat dissipation body 1211, and the connecting arm 123 extends along the third direction Z to surround the heat dissipation body 1211 and the perimeter of the heat dissipation fin 1212. The heat dissipation body 1211 is arranged on a connecting arm 123 along a second direction Y to one side of the plate body 111, and the connecting arm 123 and the heat dissipation fin 1212 can have substantially the same thickness or structure, and the connecting arm 123 can also be used for heat dissipation.

[0027] In one embodiment, the electronic control component 15 comprises an electrical board 151 and several electrical interfaces 152. The electrical board 151 is an integrated circuit board capable of transmitting and processing electrical signals. The several electrical interfaces 152 are conductive connectors (sockets or the like) electrically connected to the electrical board 151. The electrical board 151 is connected to the mounting 11, and the electrical interfaces 152 are connected to the electrical board 151. Different electrical interfaces 152 can be used to connect different functional components and implement electrical signal interaction between them and the electrical board 151.

[0028] In one embodiment, for the sake of clarity, the first direction X, the second direction Y, and the third direction Z are introduced in the embodiments of the present application for the purpose of description, wherein the first direction X, the second direction Y, and the third direction Z are three non-parallel directions in the spatial coordinate system; in the following embodiments, the first direction X, the second direction Y, and the third direction Z are used for the purpose of description as three mutually perpendicular reference directions in the three-dimensional Cartesian coordinate system, and the directions shown in the embodiments of the present application serve to better understand the relative positional relationship of the various components, but do not restrict their specific directions.

[0029] In the present embodiment, the plate body 111 is essentially plate-shaped, with its width direction corresponding to the first direction X, its thickness direction to the second direction Y, and its length direction to the third direction Z. The sliding section 112 is located on one side of the plate body 111 along the second direction Y and projects forward. The extrusion component 14 and the nozzle assembly 12 are each located on opposite sides of the sliding section 112 along the third direction Z, and the electronic control component 15 and the nozzle assembly 12 are located on opposite sides of the plate body 111 along the second direction Y, and the electronic control component 15 and the nozzle assembly 12 are located on the same side of the sliding section 112 along the third direction Z.

[0030] It is understood that the extrusion component 14 is located upstream of the consumable transport channel and that the consumable fed through the extrusion component 14 is generally not blocked. The extrusion component 14 may also be configured to be rigidly connected to the support 11. Although the electronic control component 15 is located downstream of the consumable transport channel, the electronic control component 15 does not come into direct contact with the consumable and may also be configured to be rigidly connected to the support 11.The nozzle assembly 12 is located downstream of the consumable transport channel, and the consumable passes through the nozzle assembly 12 and must be heated within it. Therefore, the consumable can easily become stuck in the nozzle assembly 12. For this reason, the nozzle assembly 12 is designed to be detachably connected to the bracket 11 to facilitate subsequent maintenance of the printhead assembly 10. Simultaneously, the molten consumable is extruded from the nozzle assembly 12. The positional accuracy of the nozzle assembly 12 is directly related to the printing accuracy of the printhead assembly 10. Therefore, the nozzle assembly 12 is designed to have a double connection to the bracket 11 via the connecting arm 123 and the carriage 122 to improve the assembly accuracy of the nozzle assembly 12.

[0031] In one embodiment, the slide 122 comprises a projecting section 1221 that extends along a first direction; the sliding section 112 is provided with a sliding groove 1120 that is recessed along the first direction X, and the projecting section 1221 is slidably arranged in the sliding groove 1120. The heat dissipation element 121 is designed such that it can be slidably arranged with the support 11 along the second direction Y.

[0032] In the present embodiment, the slide 122 is located at the end of the heat dissipation body 1211, and the slide 122 has two projecting sections 1221, each of which is connected to the heat dissipation body 1211 and projects along the first direction X on two opposite sides. The sliding section 112 is provided with two spaced-apart sliding grooves 1120 along the first direction X, and the area between the two sliding grooves 1120 along the first direction X is empty to receive the end of the heat dissipation body 1211 that is connected to the slide 122, with each of the two sliding grooves 1120 serving to receive a projecting section 1221.The foreground section 1221 extends along the first direction X into the sliding groove 1120, and the carriage 122 is stacked along the third direction Z with the sliding section 112 to provide support for the bracket 11 on the heat dissipation part 121 along the third direction Z. The foreground section 1221 and the sliding groove 1120 both extend along the second direction Y, so that the heat dissipation part 121 can be slidably arranged with the sliding section 112 along the second direction Y.

[0033] It is understood that the shape of the slide 122 and the shape of the sliding section 112 are designed to fit each other. The guidance of the slide 122 by the sliding section 112 can improve ease of assembly, allowing the heat dissipation part 121 and the sliding section 112 to be mounted by guiding and sliding. Furthermore, due to its shape, the sliding section 112 can limit the mounting position of the nozzle assembly 12, thereby improving assembly accuracy.

[0034] In one embodiment, the sliding section 112 is arranged on one side of the plate body 111 along the second direction Y, and the nozzle arrangement 12 is arranged on one side of the sliding section 112 along the third direction Z. The carriage 122 is arranged at one end of the heat dissipation part 121 along the third direction Z, and the connecting arm 123 extends along the third direction Z and is detachably connected to the plate body 111.

[0035] It is understood that the sliding section 112 is arranged on one side of the plate body 111 and that the sliding section 112 and the plate body 111 form a substantially angled structure, with the heat dissipation part 121 being configured to be located within the angled structure. The carriage 122 is arranged on a side of the heat dissipation part 121 facing the sliding section 112, and the connecting arm 123 is arranged on a side of the heat dissipation part 121 facing the plate body 111.When the carriage 122 interacts with the sliding section 112 to move the heat dissipation part 121 into a predetermined position along the second direction Y, at least the part extending along the third direction Z of the connecting arm 123 can rest against the plate body 111 and be connected to it by another fastening structure, so that the heat dissipation part 121 is attached to the plate body 111.

[0036] This means that a double connection exists between the nozzle assembly 12 and the holder 11, specifically between the slide 122 and the sliding section 112, as well as between the connecting arm 123 and the plate body 111. The sliding fit between the slide 122 and the sliding section 112 can improve the ease and accuracy of assembly of the nozzle assembly 12 and the holder 11. The connecting arm 123 interacts with the plate body 111 to improve the assembly strength of the nozzle assembly 12 and the holder 11.

[0037] Further in combination with Fig. In one embodiment, the plate body 111 is provided with a first mounting hole 1110 that penetrates it along the second direction Y, and the connecting arm 123 is provided with a second mounting hole 1230 that penetrates it along the second direction Y, wherein the first mounting hole 1110 and the second mounting hole 1230 are designed to communicate along the second direction Y.

[0038] In the present embodiment, the first mounting hole 1110 and the second mounting hole 1230 are each through holes, wherein the first mounting hole 1110 and the second mounting hole 1230 are designed to be at the same height along the third direction Z, wherein the first mounting hole 1110 and the second mounting hole 1230 are aligned and connected to each other, and the connecting arm 123 can be connected to the plate body 111 by providing a fastening element (such as a bolt) that penetrates the first mounting hole 1110 and the second mounting hole 1230.

[0039] In one embodiment, the heat dissipation body 1211 and the plate body 111 are spaced apart from each other along the second direction Y, and the heat dissipation body 1211 is provided with a third mounting hole 1210 that penetrates it along the second direction Y, wherein the first mounting hole 1110, the second mounting hole 1230 and the third mounting hole 1210 are designed to communicate along the second direction Y.

[0040] In the present embodiment, the heat dissipation body 1211 is spaced apart from the plate section 111 along the second direction Y, and the connecting arm 123 is arranged between the heat dissipation body 1211 and the plate body 111 along the second direction Y. The third mounting hole 1210 is a through hole, wherein the first mounting hole 1110, the second mounting hole 1230, and the third mounting hole 1210 are configured to be at the same height along the third direction Z, and the first mounting hole 1110, the second mounting hole 1230, and the third mounting hole 1210 are aligned and communicate with each other. The printhead assembly 10 further comprises a mounting bolt 131 that passes successively through the first mounting hole 1110, the second mounting hole 1230, and the third mounting hole 1210 along the second direction Y.

[0041] In the present embodiment, two first mounting holes 1110, two second mounting holes 1230, and two third mounting holes 1210 are provided, spaced apart in pairs along the first direction X. In other embodiments, multiple first mounting holes 1110, multiple second mounting holes 1230, and multiple third mounting holes 1210 may also be present, and the multiple first mounting holes 1110, the multiple second mounting holes 1230, or the multiple third mounting holes 1210 may each be spaced apart from one another along the first direction X.

[0042] It is understood that the fastening bolt 131 can be a screw-like connecting structure and that the fastening bolt 131 extends through the first mounting hole 1110, the second mounting hole 1230, and the third mounting hole 1210 along the second direction Y to fasten the plate body 111, the connecting arm 123, and the heat dissipation body 1211. The fastening bolt 131 can lock the plate body 111 and the connecting arm 123, and the fastening bolt 131 can further confine the heat dissipation body 1211, thereby further improving the assembly strength between the heat dissipation part 121 and the bracket 11.

[0043] In one embodiment, a first mounting ring 1111 is arranged on the plate body 111, with the first mounting ring 1111 being arranged around the first mounting hole 1110. The inner diameter of the second mounting hole 1230 is larger than the outer diameter of the first mounting ring 1111, with the first mounting ring 1111 being arranged in the second mounting hole 1230.

[0044] It is understood that the first mounting ring 1111 is used to define the position of the first mounting hole 1110, and that the first mounting ring 1111 can be detachably positioned in the second mounting hole 1230. When the nozzle assembly 12 slides along the second direction Y until the connecting arm 123 contacts the plate body 111, and when the first mounting ring 1111 protrudes into the second mounting hole 1230, this means that the plate body 111 and the heat dissipation part 121 are mounted in place. The provision of the first mounting ring 1111 not only facilitates the assembly process but also improves the mounting accuracy of the plate body 111 and the heat dissipation part 121.

[0045] Further in combination with Fig. In one embodiment, the connecting arm 123 comprises a bending section 1231 and a mounting section 1232. The bending section 1231 is connected to the heat dissipation body 1211, and the mounting section 1232 is connected to the bending section 1231, with the second mounting hole 1230 being provided in the mounting section 1232. The heat dissipation body 1211 is provided with a third mounting hole 1210, and the fastening bolt 131 passes successively through the first mounting hole 1110, the second mounting hole 1230, and the third mounting hole 1210 along the second direction Y. The outer diameter of the fastening bolt 131 is smaller than the inner diameter of the third mounting hole 1210.In the present embodiment, the first mounting hole 1110, the second mounting hole 1230, and the third mounting hole 1210 are arranged accordingly along the second direction Y and extend continuously, and the fastening bolt 131 extends through the first mounting hole 1110, the second mounting hole 1230, and the third mounting hole 1210 along the second direction Y to fasten the plate body 111, the connecting arm 123, and the heat dissipation body 1211. The outer diameter of the fastening bolts 131 is smaller than the inner diameter of the third mounting hole 1210, and the heat dissipation element 1211 may have a certain movable gap along the third direction Z relative to the fastening bolt 131.

[0046] In one embodiment, the heat dissipation body 1211 extends along the third direction Z, and the system section 1232 and the plate body 111 extend along the third direction Z. The extension direction of the bending section 1231 intersects the second direction Y and the third direction Z, and the bending section 1231 is provided with a deformation sensor 16.

[0047] In the present embodiment, the system section 1232 and the plate body 111 are arranged essentially parallel to each other, so that the system section 1232 and the plate body 111 can have good contact and fit. The extension direction of the bending section 1231 lies between the second direction Y and the third direction Z and, in particular, intersects the extension direction of the heat dissipation body 1211. The deformation sensor 16 can be a component capable of detecting deformations, such as a strain gauge, a piezoelectric ceramic plate, a piezoresistor, or other component. The deformation sensor 16 is configured to be electrically connected to the electronic control component 15. The deformation sensor 16 can detect the displacement of the nozzle assembly 12 and is used for adjusting the orientation of the nozzle component 12 and similar operations.The specific signaling of the deformation sensor 16 and the nature of its electrical connection with the electronic control component 15 can be carried out in a known and practical manner, which will not be discussed in detail here.

[0048] It is understood that the nozzle section 124 of the nozzle assembly 12 can come into contact with other structures along the third direction Z during the three-dimensional printing process, and the nozzle section 124 is displaced under the force along the third direction Z. The heat dissipation part 121 can have a certain movable gap along the third direction Z relative to the mounting bolt 131, and the heat dissipation part 121, connected to the nozzle section 124, moves synchronously with the nozzle section 124 along the third direction Z. The heat dissipation body 1211 is displaced along the third direction Z, and the connecting arm 123 is rigidly connected to the plate body 111 along the third direction Z. The connecting arm 123, connected to the heat dissipation body 1211, is pulled and deformed due to the movement of the heat dissipation body 1211 along the third direction Z.The deformation sensor 16 arranged on the bending section 1231 can generate a corresponding electrical contact signal by detecting the bending of the bending section 1231, wherein the electrical contact signal corresponds to a contact signal of the nozzle arrangement 12.

[0049] Further in combination with Fig. In one embodiment, a second mounting ring 1233 is arranged on the connecting arm 123, the second mounting ring 1233 being located on a side of the connecting arm 123 facing away from the plate body 111. The second mounting ring 1233 is arranged around the second mounting hole 1230, and a first internal thread 1234 is provided inside the second mounting ring 1233. The fastening bolt 131 extends through the first mounting hole 1110, the second mounting hole 1230, and the second mounting ring 1233 along the second direction Y, and the outer surface of the fastening bolt 131 is provided with a first external thread 1311, and the first internal thread 1234 engages with the first external thread 1311.

[0050] In the present embodiment, the fastening bolt 131 is provided to extend from the side of the plate body 111 facing away from the heat dissipation part 121, and the nut section of the fastening bolt 131 rests against the surface of the plate body 111 facing away from the heat dissipation part 121, whereby the threaded rod of the fastening bolt 131, which is provided with the first external thread 1311, can engage with the second mounting ring 1233, which is provided with the first internal thread 1234, i.e., the fastening bolt 131 can lock the connecting arm 123 and the plate body 111 and thus fix the nozzle section 124 and the plate body 111.

[0051] It is understood that the second mounting ring 1233 serves to increase the engagement area between the connecting arm 123 and the mounting bolt 131 along the second direction Y, thereby increasing the connection strength between the mounting bolt 131 and the connecting arm 123 and thus improving the overall mounting strength of the printhead assembly 10. The inner wall of the first mounting hole 1110 can also be provided with a corresponding internal thread to further increase the mounting strength.

[0052] Further in combination with Fig. In one embodiment, the plate body 111 is provided with a first mounting hole 1110 that penetrates it along the second direction Y. The connecting arm 123 is provided with a connecting column 1235 that extends along the second direction Y, and the connecting column 1235 is configured to extend through the first mounting hole 1110 along the second direction Y. The printhead assembly 10 further comprises a connecting ring 132, which is arranged on a side of the plate body 111 facing away from the connecting arm 123 along the second direction Y, and the connecting ring 132 is detachably connected to the connecting column 1235. The outer surface of the connecting column 1235 is provided with a second external thread 1236 and the inner surface of the connecting ring 132 is provided with a second internal thread 1321, wherein the second internal thread 1321 engages with the second external thread 1236.

[0053] In the present embodiment, the connecting column 1235 can be a bolt integrally formed with the connecting arm 123, wherein the inner wall of the first mounting hole 1110 can be a smooth surface, allowing the connecting column 1235 to be guided through the first mounting hole 1110 to achieve preliminary positioning of the plate body 111 and the connecting part. The connecting ring 132 can be a screw sleeve and is detachably connected to the connecting column 1235. The connecting ring 132 is rotated until it and the plate body 111 are firmly in contact, thus locking the connecting arm 123 and the plate body 111. That is, the fastening bolt 131 can lock the connecting arm 123 and the plate body 111, thereby fixing the nozzle section 124 and the plate body 111.

[0054] It is understood that when the nozzle assembly 12 slides along the second direction Y until the connecting arm 123 touches the plate body 111, and when the connecting column 1235 projects into the first mounting hole 1110, this means that the plate body 111 and the heat dissipation part 121 are mounted in place. The connecting column 1235 can be provided to facilitate the mounting process of the plate body 111 and the heat dissipation part 121 and can also improve the mounting accuracy between the plate body 111 and the heat dissipation part 121. At the same time, the connecting ring 132 is arranged on a side of the plate body 111 facing away from the heat dissipation part 121 to facilitate the locking process.

[0055] In combination with what is in Fig.As shown in Figure 9, an embodiment of the present application further provides a three-dimensional printing device 1 comprising a three-dimensional printing body 19 and a printhead assembly 10 according to one of the aforementioned embodiments, and the printhead assembly 10 is connected to the three-dimensional printing body 19.

[0056] In one embodiment, the three-dimensional print body 19 comprises a form platform 191, an X-axis drive component 192, and a portal frame 193, and the form platform 191 and the X-axis drive component 192 are each connected to the portal frame 193, wherein the print head assembly 10 is movably connected to the X-axis drive component 192 and the print head assembly 10 can move relative to the form platform 191 to perform three-dimensional printing.

[0057] Specific embodiments of the present application are described above with reference to the accompanying drawings. However, a person skilled in the art will recognize that various modifications 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 modifications and substitutions are all within the scope defined by the present application.

Claims

[1] Printhead kit, characterized by , that the printhead kit includes the following: a support comprising a plate body and a sliding section connected to each other; a nozzle arrangement comprising a heat dissipation part, wherein the heat dissipation part is detachably connected to the holder; wherein the heat dissipation part comprises a connecting arm and a slide, wherein the connecting arm and the plate body are designed in such a way that they can be detachably connected to each other, and wherein the slide and the sliding section are designed in such a way that they are slidably connected to each other. [2] Printhead assembly according to claim 1, characterized by , that the sled includes a projecting section that extends along a first direction; wherein the sliding section is provided with a sliding groove formed by a recess along a first direction, wherein the protruding section is slidably arranged in the sliding groove; wherein the heat dissipation part is designed such that it can be arranged to be displaceable with the holder along a second direction, the first direction intersecting the second direction. [3] Printhead assembly according to claim 2, characterized by, that the sliding section is arranged on one side of the plate body along the second direction, wherein the nozzle arrangement is arranged on one side of the sliding section along the third direction, the third direction intersecting the first direction and the second direction; wherein the carriage is arranged at the end of the heat dissipation part along the third direction, the connecting arm being extended along the third direction, the connecting arm being detachably connected to the plate body. [4] Printhead assembly according to claim 1, characterized by , that the plate body is provided with a first mounting hole that penetrates it along the second direction; wherein the connecting arm is provided with a second mounting hole that penetrates it along the second direction; wherein the first mounting hole and the second mounting hole are designed to communicate along the second direction. [5] Printhead assembly according to claim 4, characterized by , that the heat dissipation part also comprises a heat dissipation body, wherein the connecting arm and the slide are each connected to the heat dissipation body; wherein the heat dissipation body and the plate body are spaced apart from each other along the second direction, wherein the heat dissipation body is provided with a third mounting hole that penetrates it along the second direction; wherein the first mounting hole, the second mounting hole and the third mounting hole are designed to communicate along the second direction; wherein the printhead kit also includes a mounting bolt, the mounting bolt passing successively through the first mounting hole, the second mounting hole and the third mounting hole along the second direction. [6] Printhead assembly according to claim 5, characterized by, that the connecting arm is arranged between the heat dissipation body and the plate body and connects the heat dissipation body to the plate body; wherein the connecting arm includes a bending section, wherein the bending section is connected to the heat dissipation body; wherein the connecting arm further comprises a plant section, wherein the plant section is connected to the bending section, wherein the second mounting hole is provided in the plant section. [7] Printhead assembly according to claim 6, characterized by , that the heat dissipation body extends along the third direction, with the plant section and the plate body extending along the third direction; wherein the extension direction of the bending section intersects the second direction and the third direction, wherein the bending section is equipped with a deformation sensor. [8] Printhead assembly according to claim 4, characterized by, that a first mounting ring is provided on the plate body, wherein the first mounting ring is arranged around the first mounting hole; wherein the inner diameter of the second mounting hole is larger than the outer diameter of the first mounting ring, the first mounting ring being arranged in the second mounting hole. [9] Printhead assembly according to claim 4, characterized by that a second mounting ring is provided on the connecting arm, wherein the second mounting ring is provided on a side of the connecting arm facing away from the plate body; wherein a second mounting ring is arranged around the second mounting hole, wherein a first internal thread is arranged within the second mounting ring; wherein the printhead assembly also includes a mounting bolt, wherein the mounting bolt passes through the first mounting hole, the second mounting hole and the second mounting ring along the second direction, wherein the outer surface of the mounting bolt is provided with a first external thread, wherein the first internal thread engages with the first external thread. [10] Printhead assembly according to claim 1, characterized by , that the plate body is provided with a first mounting hole that penetrates it along the second direction; wherein the connecting arm is provided with a connecting column extending along the second direction, the connecting column being designed such that it passes through the first mounting hole along the second direction; wherein the printhead assembly further comprises a connecting ring, wherein the connecting ring is arranged on a side of the plate body facing away from the connecting arm along the second direction, wherein the connecting ring is detachably connected to the connecting column; wherein the outer surface of the connecting column is provided with a second external thread, wherein the inner surface of the connecting ring is provided with a second internal thread, wherein the second internal thread engages with the second external thread. [11] Three-dimensional printing device, characterized by , that the printing device comprises a three-dimensional print body and a printhead assembly according to one of claims 1 to 10, wherein the printhead assembly is connected to the three-dimensional print body.

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