Nozzle and 3D printer

Abstract

This utility model relates to a nozzle and a 3D printer including the same. The nozzle includes a conical pin, a heat dissipation insert, and a connector. The conical pin has an integrally formed sheath and a heating part, wherein the sheath is conical in shape with its circumference gradually decreasing towards the heating part, and the heating part is cylindrical. The heat dissipation insert has an integrally formed heat dissipation part and an insert part, wherein the insert part is conformally disposed within the sheath. The connector is a hollow cylinder, wherein the connector is conformally designed to connect the conical pin and the heat dissipation insert. The nozzle of this utility model can achieve the technical effects of quick assembly and disassembly and automatic correction, and has high connection strength, which can improve durability and reliability.

Description

Technical Field

[0001] This utility model relates to a nozzle for a 3D printer and a 3D printer including the nozzle. Background Technology

[0002] Existing 3D printer nozzles and throats are mostly designed as separate structures, requiring specialized tools for assembly and disassembly, increasing maintenance difficulty and operation time. After replacing the nozzle, XY axis recalibration is often necessary, a cumbersome process that can affect printing accuracy, making it time-consuming and error-prone for users. Furthermore, older designs often suffer from insufficient structural strength at the nozzle-throat connection, leading to bending, loosening, or ink leakage over time, further impacting print quality and equipment lifespan. The lack of an automatic alignment mechanism can also cause printhead misalignment or printing failures if not precisely aligned during installation. Overall, traditional nozzle structures still have significant limitations in terms of maintenance convenience, structural strength, and printing stability, necessitating a more integrated and reliable improvement solution. Utility Model Content

[0003] This utility model relates to a nozzle for a 3D printer. The nozzle includes a tapered pin, a heat dissipation insert, and a connector. The tapered pin has an integrally formed sheath and a heating part, wherein the sheath is conical in shape, tapering towards the heating part, and the heating part is cylindrical. The heat dissipation insert has an integrally formed heat dissipation part and an insert part, wherein the insert part is conformally disposed within the sheath. The connector is a hollow cylinder, conformally designed to connect the tapered pin and the heat dissipation insert.

[0004] In some embodiments, the tapered pin has a neck located between the sheath and the heating element. A connector connects the tapered pin and the heat sink insert at the neck.

[0005] In some embodiments, the neck has a heat-insulating space. The heat-insulating space is located between the insert, the sheath, and the connector.

[0006] In some embodiments, the sheath and the insert portion each have a first enlarged section and a second enlarged section. The connector is adapted to the first enlarged section and the second enlarged section to connect the tapered pin and the heat dissipation insert at the neck.

[0007] In some embodiments, the tapered pin and the heat sink insert each have a first through hole and a second through hole, respectively. The connector connects the first through hole and the second through hole through a first enlarged section and a second enlarged section.

[0008] In some embodiments, the sheath has a cylindrical insertion hole, and the insertion part is accommodated in the cylindrical insertion hole.

[0009] In some implementations, the heat dissipation section has multiple heat dissipation fins.

[0010] This utility model also relates to a 3D printer including an extrusion module. The extrusion module includes a nozzle, a fixing plate, and a top cover as described above. The fixing plate has a nozzle placement hole, in which the nozzle is placed, and the nozzle placement hole is conformed to a conical pin. The top cover fixes the nozzle.

[0011] In summary, the nozzle of this invention comprises a conical pin, a heat dissipation insert, and a connector, forming a three-in-one design. The nozzle is conical in shape and features an ultra-thin outer structure, allowing for quick assembly and disassembly without the need for additional tools, significantly improving maintenance efficiency. Through geometric alignment design, it automatically centers itself, ensuring stable printing accuracy after assembly and eliminating the need for recalibration after nozzle replacement. Furthermore, this invention connects the conical pin and heat dissipation insert via a connector, providing high connection strength and effectively reducing common problems at traditional connections such as bending, deformation, or material leakage, thus improving durability and reliability. Attached Figure Description

[0012] Figure 1A This is a schematic diagram of a nozzle according to one embodiment of the present invention.

[0013] Figure 1B This is an exploded view of a nozzle according to one embodiment of the present invention.

[0014] Figure 2A for Figure 1A A cross-sectional schematic diagram.

[0015] Figure 2B for Figure 1B A cross-sectional schematic diagram.

[0016] Figure 3A This is a schematic diagram of an extrusion module in the open state according to one embodiment of the present invention.

[0017] Figure 3B This is a schematic diagram of an extrusion module in a closed state according to one embodiment of the present invention.

[0018] Figure 4A This is a schematic diagram of the extrusion module in the open state according to another embodiment of the present invention.

[0019] Figure 4B This is a schematic diagram of the extrusion module in the closed state according to another embodiment of the present invention.

[0020] The reference numerals in the attached figures are explained as follows:

[0021] 100: Nozzle

[0022] 110: Tapered pin

[0023] 111: Sheath

[0024] 1110: Outer side

[0025] 1111: Fixed Section

[0026] 1112: Gradual Transition Section

[0027] 112: Heating section

[0028] 113: Neck

[0029] 1131: Insulated Space

[0030] 114: First enlarged section

[0031] 115: First through hole

[0032] 116: Cylindrical socket

[0033] 1161: Bottom

[0034] 120: Heat dissipation module

[0035] 121: Heat dissipation section

[0036] 1211: Heat dissipation fins

[0037] 122: Plug-in Department

[0038] 124: Second enlarged section

[0039] 125: Second through hole

[0040] 130: Connector

[0041] 200, 300: Printers

[0042] 210, 310: Extrusion Module

[0043] 211, 311: Fixed plate

[0044] 2110, 3110: Nozzle placement holes

[0045] 212, 312: Top cover

[0046] W1, W2: Width

[0047] A1: First Axial Direction

[0048] A2: Second Axial

[0049] A3: Third Axis Detailed Implementation

[0050] The following utility model description provides numerous different embodiments or instances for implementing various features of the provided object. Specific examples of components and arrangements are described below to simplify the present utility model. Of course, these are merely examples and are not intended to be limiting. Furthermore, element symbols and / or letters may be repeated in various instances of the present utility model. This repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or configurations discussed.

[0051] To enable readers to clearly understand the interrelationships and orientations of the various components, coordinate axes are marked in the attached diagram, namely the first axis A1, the second axis A2, and the third axis A3.

[0052] Please see Figure 1A and Figure 1B . Figure 1A A schematic diagram of the nozzle 100 of this utility model is shown. Figure 1B for Figure 1A An exploded view of the nozzle 100. The nozzle 100 of this invention is suitable for 3D printers. The nozzle 100 includes a tapered pin 110, a heat dissipation insert 120, and a connector 130.

[0053] The tapered pin 110 has an integrally formed sheath 111 and a heating portion 112, wherein the sheath 111 is conical in shape with its circumference gradually decreasing towards the heating portion 112, and the heating portion 112 is cylindrical. Specifically, viewed from the plane formed by the first axis A1 and the second axis A2, the outer side 1110 of the sheath 111 includes a fixed section 1111 and a tapering section 1112. The fixed section 1111 is located near the end of the sheath 111 away from the heating portion 112, and the tapering section 1112 is located near the end of the sheath 111 close to the heating portion 112. The width W1 of the fixed section 1111 remains constant, and the width W2 of the tapering section 1112 gradually decreases from one end of the fixed section 1111 towards the heating portion 112 (i.e., the circumference of the sheath 111 gradually decreases towards the heating portion 112), thus the sheath 111 forms a conical shape.

[0054] The heat dissipation insert 120 has an integrally formed heat dissipation part 121 and an insert part 122. The insert part 122 is conformally disposed in the sheath part 111, so that the heat dissipation part 121 protrudes from the sheath part 111. In some embodiments, the heat dissipation part 121 has a plurality of heat dissipation fins 1211, configured to improve the heat dissipation effect of the heat dissipation part 121.

[0055] The connector 130 is a hollow cylinder, adapted to connect the tapered pin 110 and the heat dissipation insert 120. In some embodiments, the tapered pin 110 has a neck 113 located between the sheath portion 111 and the heating portion 112. Specifically, a transition section 1112 connects the fixed section 1111 and the neck 113. The width W2 of the transition section 1112 gradually decreases from one end of the fixed section 1111 toward the neck 113.

[0056] In some embodiments, the tapered pin 110 and the heat sink 120 may be made of, for example, brass or steel. The connector 130 may be made of, for example, steel.

[0057] Please see Figure 2A and Figure 2B . Figure 2A It shows Figure 1A A cross-sectional schematic diagram of nozzle 100. Figure 2B It shows Figure 1B A cross-sectional schematic diagram of nozzle 100.

[0058] exist Figure 2B In the cone pin 110, a cylindrical insertion hole 116, a first enlarged section 114, and a first through hole 115 are included. The cylindrical insertion hole 116 is configured to receive the insertion portion 122. In some embodiments, the cylindrical insertion hole 116 is a hollow cavity extending from the side of the sheath portion 111 away from the heating portion 112 to the heating portion 112. The first enlarged section 114 extends from the bottom surface 1161 of the cylindrical insertion hole 116 to connect to the first through hole 115. The first through hole 115 extends through the heating portion 112 from the first enlarged section 114.

[0059] exist Figure 2B In this design, the thickness of the fixed section 1111 to the cylindrical insertion hole 116 remains constant, while the thickness of the transition section 1112 to the cylindrical insertion hole 116 gradually decreases from one end of the fixed section 1111 towards one end of the neck 113, giving the sheath 111 a conical shape, while the cylindrical insertion hole 116 remains cylindrical. The cylindrical insertion hole 116 extends to the neck 113, ensuring that the outer side of the neck 113 to the cylindrical insertion hole 116 still has a certain thickness. This structure strengthens the connection of the neck 113 and effectively reduces common problems such as bending, deformation, or material leakage at traditional joints, improving the overall durability and reliability of the nozzle 100.

[0060] exist Figure 2BIn the heat dissipation insert 120, a second through hole 125 and a second enlarged section 124 are included. The second through hole 125 penetrates the heat dissipation portion 121 and the insert portion 122. The second enlarged section 124 extends upward from the bottom of the insert portion 122 to connect with the second through hole 125. Due to the highly compatible structural design between the cylindrical insertion hole 116 of the tapered pin 110 and the insert portion 122 of the heat dissipation insert 120, the nozzle 100 can be assembled very easily. Specifically, when assembling the nozzle 100, only appropriate pressure needs to be applied to tightly engage the tapered pin 110 and the heat dissipation insert 120, ensuring precise contact and stable connection between the two. This design eliminates the need for additional tools (such as screws or nuts) commonly required in traditional assembly processes, simplifying assembly steps and reducing reliance on operating tools, thereby improving production efficiency. At the same time, this assembly method also ensures assembly accuracy, further guaranteeing the stability and reliability of the components of the nozzle 100.

[0061] In some embodiments, the inner diameter of the connector 130 is the same as the inner diameter of the first through hole 115 and the second through hole 125, ensuring that the molten 3D printing filament maintains fluid continuity and stability when passing through each component, avoiding problems such as blockage or uneven flow rate. Furthermore, the inner diameters of the first enlarged section 114 and the second enlarged section 124 are larger than the outer diameter of the connector 130, allowing the connector 130 to conform to the first enlarged section 114 and the second enlarged section 124.

[0062] exist Figure 2A In this process, after the nozzle 100 is assembled, the insertion part 122 of the heat dissipation insert 120 is housed in the cylindrical insertion hole 116 of the conical pin 110. The connector 130 is positioned within the first enlarged section 114 and the second enlarged section 124 at its neck 113 to connect the conical pin 110 and the heat dissipation insert 120, while ensuring complete alignment of the first through hole 115 and the second through hole 125 to prevent molten 3D printing filament from overflowing at the connection point. This conformal design not only improves alignment accuracy during assembly but also enhances the fit between the connector 130 and the surrounding structure, effectively preventing molten filament from overflowing at the connection point, thus ensuring a clean and stable printing process. This structural configuration achieves complete alignment of the first through hole 115 and the second through hole 125, significantly improving print quality and module durability, while simplifying maintenance and assembly processes, balancing efficiency and practicality.

[0063] In practical applications, the 3D printing filament first enters the second through-hole 125 from one end of the heat dissipation section 121, then passes smoothly through the connector 130 and continues into the first through-hole 115. During this process, the filament is guided to the heating section 112 for heating treatment to ensure that the filament reaches the required molten state. Subsequently, the molten 3D printing filament is extruded from the other end of the heating section 112 for the printing step. The nozzle design of this invention can ensure accurate positioning and heating stability of the filament before entering the heating section 112, and effectively improve printing quality and accuracy.

[0064] exist Figure 2A In the middle, the neck 113 has a heat insulation space 1131, which is located between the insert part 122, the sheath part 111, and the connector 130 to block external heat exchange. Specifically, after the nozzle 100 is assembled, there is a small space between the insert part 122 and the bottom surface 1161 of the cylindrical insertion hole 116. This small space surrounds the connector 130, thus forming the heat insulation space 1131. The heat insulation space 1131 can use air to effectively block external heat exchange, thereby ensuring that the 3D printing filament in the heat insulation space 1131 can maintain the temperature required for printing, thereby improving the stability and accuracy of printing.

[0065] Please see Figure 3A and Figure 3B . Figure 3A This diagram shows a 3D printer 200 including an extrusion module 210 in an open state according to one embodiment of the present invention. Figure 3B for Figure 3A A schematic diagram of the extrusion module 210 in the closed state.

[0066] In some embodiments, the extrusion module 210 is fitted with a nozzle 100. Figure 3A In this extrusion module 210, there are nozzle 100, a fixing plate 211, and a top cover 212 as described above. The fixing plate 211 has a nozzle placement hole 2110, in which the nozzle 100 is placed. The nozzle placement hole 2110 is adapted to the conical pin of the nozzle 100. The top cover 212 is configured to fix the nozzle 100 when the extrusion module 210 is in the closed state.

[0067] Because the nozzle mounting hole 2110 is designed to fit the tapered pin of the nozzle 100, users can replace the nozzle 100 more conveniently. Furthermore, users can easily install and remove the nozzle 100 without any additional tools, thus simplifying the previously cumbersome maintenance process. The nozzle 100 of this invention can automatically position itself during replacement, eliminating the need for users to recalibrate the XY axis position, thereby improving operational convenience and work efficiency, and further reducing the risk of errors caused by manual adjustment.

[0068] Please see Figure 4A and Figure 4B . Figure 4A This diagram shows a 3D printer 300 including an extrusion module 310 in an open state according to another embodiment of the present invention. Figure 4B for Figure 4A A schematic diagram of the extrusion module 310 in the closed state.

[0069] exist Figure 4A In this design, the extrusion module 310 includes the nozzle 100, the fixing plate 311, and the top cover 312 as described above. The structural design of the extrusion module 310 is basically the same as that of the extrusion module 210, but it has functional improvements and greater flexibility. Specifically, the extrusion module 310 is equipped with multiple nozzle placement holes 3110 located on the fixing plate 311, allowing the module to simultaneously mount multiple nozzles 100. This design can meet the needs of different 3D printers, especially for applications requiring simultaneous multi-color or multi-material printing. Through this multi-nozzle design, the extrusion module 310 not only improves printing speed but also provides more diverse printing options, further expanding the application scope of 3D printing technology and achieving more efficient and multifunctional printing solutions.

[0070] In summary, the nozzle of this invention is a tool-free nozzle with high efficiency and convenience. The nozzle comprises a conical pin, a heat dissipation insert, and a connector. It has a conical shape and an ultra-thin outer structure, allowing for quick assembly and disassembly without the need for additional tools, thus significantly improving maintenance efficiency. Through geometric alignment design, the nozzle automatically aligns to the center of the nozzle placement hole during replacement, ensuring stable printing accuracy after assembly and eliminating the need for recalibration. Furthermore, the nozzle of this invention, connected to the conical pin and heat dissipation insert via the connector, possesses high connection strength, effectively reducing common problems at traditional connections such as bending, deformation, or material leakage, thus improving the durability and reliability of the extrusion module.

[0071] The foregoing summary outlines the features of several embodiments, enabling those skilled in the art to better understand the implementation of this invention. Those skilled in the art will understand that they can readily use this invention as the basis for designing or modifying other processes and structures to achieve the same purpose and / or attain the same advantages of the embodiments described herein. Those skilled in the art will also recognize that these equivalent constructions do not depart from the concept and scope of this invention, and that various changes, substitutions, and replacements can be made herein without departing from the concept and scope of this invention.

Claims

1. A nozzle for a 3D printer, characterized in that, The nozzle includes: A conical pin has an integrally formed sheath and a heating part, wherein the sheath is conical in shape with its circumference gradually decreasing towards the heating part, and the heating part is cylindrical. A heat dissipation insert has an integrally formed heat dissipation part and an insert part, wherein the insert part is conformally disposed within the sheath part; and The connector is a hollow cylinder, wherein the connector is conformable to connect the tapered pin and the heat dissipation plug.

2. The nozzle as claimed in claim 1, characterized in that, The tapered pin has a neck located between the sheath and the heating part, and the connector connects the tapered pin and the heat dissipation plug at the neck.

3. The nozzle as described in claim 2, characterized in that, The neck has a heat-insulating space located between the insert portion, the sheath portion, and the connector.

4. The nozzle as described in claim 2, characterized in that, The sheath and the insert each have a first enlarged section and a second enlarged section, and the connector is adapted to the first enlarged section and the second enlarged section to connect the tapered pin and the heat dissipation insert at the neck.

5. The nozzle as described in claim 4, characterized in that, The tapered pin and the heat dissipation plug each have a first through hole and a second through hole, and the connector connects the first through hole and the second through hole through the first enlarged hole section and the second enlarged hole section.

6. The nozzle as claimed in claim 1, characterized in that, The sheath portion has a cylindrical insertion hole, and the insertion portion is accommodated in the cylindrical insertion hole.

7. The nozzle as claimed in claim 1, characterized in that, The heat dissipation section has multiple heat dissipation fins.

8. A 3D printer, comprising an extrusion module, characterized in that, The extrusion module includes: The nozzle as described in any one of claims 1 to 7; A fixed disc having a nozzle placement hole, wherein the nozzle is placed in the nozzle placement hole, the nozzle placement hole being conformable to the conical pin; and The top cover secures the nozzle.

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