Spray head suite and 3D printing device applying same

Abstract

The embodiment of the utility model provides a spray head suite and a 3D printing device applying the spray head suite. The spray head suite comprises a spray nozzle assembly, the spray nozzle assembly is used for heating consumables and then extruding the consumables out of a discharging end, and the spray head suite further comprises a first air cooling component and a second air cooling component. The first air cooling component comprises a first air outlet, and the first air outlet faces the discharging end. The second air cooling component comprises a second air outlet, and the second air outlet faces the discharging end. The first air cooling component and the second air cooling component are arranged on the two opposite sides of the nozzle assembly, and the direction of airflow blown out of the first air outlet is different from that of airflow blown out of the second air outlet.

Description

Technical Field

[0001] The present application relates to the field of 3D printing, and in particular, to a nozzle kit and a 3D printing device using the same. Background Art

[0002] 3D printing technology is a rapid prototyping technology that uses a digital model file as a basis and applies special wax materials, powdered metals, plastics, or other bondable materials to manufacture three-dimensional objects by printing layer upon layer of materials. Fused deposition modeling (FDM) is one of the main 3D printing technologies. In this technology, a thermoplastic filament is heated and melted and then extruded from a nozzle, deposited on a forming platform or the previously cured material of the previous layer, and finally a physical object is generated.

[0003] When a 3D printer is working, the raw material is first melted and ejected from the nozzle. The raw material accumulates in a certain manner to form a three-dimensional object. After the raw material is ejected from the nozzle, it needs to quickly solidify to ensure that the processed object has a certain structural strength and surface quality. Therefore, it is necessary to provide an air-cooling component outside the nozzle assembly to cool the consumables ejected from the nozzle. In the prior art, a relatively high-power air-cooling component is usually provided beside the nozzle assembly to cool the consumables ejected from the nozzle by air-cooling. However, in order to achieve the necessary heat dissipation effect, the power of this air-cooling component is usually relatively large, resulting in an increase in the overall power of the 3D printer, which does not conform to the development trend of miniaturization of household 3D printers. Moreover, in order to avoid interference of the high-power air-cooling component on the nozzle assembly, the motor or blower in the air-cooling component may be relatively far from the discharge end of the nozzle. In order to transmit the airflow generated by the motor or blower to the discharge end of the nozzle, it is necessary to provide a certain length of air duct inside the air-cooling component for guidance, which not only increases the volume of the air-cooling component but also increases the energy loss and power consumption of the air-cooling component.

[0004] How to solve the above problems and provide a nozzle kit with good cooling effect, low power consumption, and small volume, as well as a 3D printing device using the same, is what those skilled in the art need to consider. Summary of the Utility Model

[0005] In order to solve the problems in the prior art, the embodiments of the present application provide a nozzle kit with good cooling effect, low power consumption, and small volume, as well as a 3D printing device using the same.

[0006] An embodiment of the present application provides a nozzle kit, which includes a nozzle assembly for extruding a consumable from a discharge end after heating, and the nozzle kit further includes a first air-cooling component and a second air-cooling component. The first air-cooling component includes a first air outlet facing the discharge end; the second air-cooling component includes a second air outlet facing the discharge end. The first air-cooling component and the second air-cooling component are arranged on opposite sides of the nozzle assembly, and the direction of the air flow blown out from the first air outlet is different from the direction of the air flow blown out from the second air outlet.

[0007] In one embodiment, the first air-cooling component and the second air-cooling component are symmetrically arranged on opposite sides of the nozzle assembly.

[0008] In one embodiment, the first air-cooling component is configured to be able to eject gas from the first air outlet to form an air flow, and the second air-cooling component is configured to be able to eject gas from the second air outlet to form an air flow. The first air-cooling component and the second air-cooling component are used to cooperate to generate a cyclone vortex around the discharge end.

[0009] In one embodiment, both the first air outlet and the second air outlet face the discharge end, and the first air outlet and the second air outlet are respectively inclined towards opposite sides of the discharge end.

[0010] In one embodiment, the first air-cooling component includes a first housing and a first air guiding member, the first air outlet is located in the first air guiding member, and the first housing has a first air cavity inside. The first housing is connected to the first air guiding member to communicate the first air cavity with the first air outlet.

[0011] In one embodiment, the second air-cooling component includes a second housing and a second air guiding member, the second air outlet is located in the second air guiding member, and the second housing has a second air cavity inside. The second housing is connected to the second air guiding member to communicate the second air cavity with the second air outlet.

[0012] In one embodiment, the first air-cooling component further includes a first air flow generating member disposed inside the first housing. The first air flow generating member is used to generate an air flow and guide it through the first air cavity and the first air outlet to blow towards the discharge end. The second air-cooling component further includes a second air flow generating member disposed inside the second housing. The second air flow generating member is used to generate an air flow and guide it through the second air cavity and the second air outlet to blow towards the discharge end.

[0013] In one embodiment, a plurality of first air guide plates are provided at the first air outlet. The first air guide plates are inclined relative to the discharge end. A plurality of second air guide plates are provided at the second air outlet. The second air guide plates are inclined relative to the discharge end. The inclined directions of the inclined first air guide plates and the inclined second air guide plates are different.

[0014] In one embodiment, the first air guide plate and the second air guide plate are in a straight plate shape or an arc plate shape.

[0015] An embodiment of the present application further provides a 3D printing device, which includes a forming platform, a driving component, and a nozzle kit as described in any one of the foregoing embodiments. The driving component drives the nozzle kit to move relative to the forming platform.

[0016] It can be understood that an embodiment of the present application provides a nozzle kit. The nozzle kit includes a first air cooling component and a second air cooling component that are spaced apart on opposite sides of the nozzle assembly. Both the first air outlet and the second air outlet are arranged facing the discharge end, and they cooperate with each other to improve the cooling effect at the discharge end. Compared with traditional high-power single air cooling, the single power consumption of the first air cooling component and the second air cooling component can be lower. However, the first air cooling component and the second air cooling component cool the nozzle assembly together, so the necessary cooling effect can still be achieved. At the same time, compared with traditional high-power single air cooling, the first air cooling component and the second air cooling component can be smaller in volume and shorter in air duct, and their corresponding energy utilization efficiency can be higher. Moreover, the first air cooling component and the second air cooling component are arranged on opposite sides of the nozzle assembly, and the direction of the air flow blown out from the first air outlet is different from the direction of the air flow blown out from the second air outlet. The first air cooling component and the second air cooling component cooperate to generate a cyclone vortex at the discharge end, further improving the cooling effect, making the cooling more uniform, and at the same time reducing the power consumption of the first air cooling component and the second air cooling component. Description of the Drawings

[0017] Figure 1 It is an overall schematic diagram of the nozzle kit provided by an embodiment of the present application.

[0018] Figure 2 It is a partial three-dimensional schematic diagram of one angle of the nozzle kit provided by an embodiment of the present application.

[0019] Figure 3 It is a partial three-dimensional schematic diagram of another angle of the nozzle kit provided by an embodiment of the present application.

[0020] Figure 4 It is a cross-sectional three-dimensional schematic diagram of the first air cooling component or the second air cooling component of the nozzle kit provided by an embodiment of the present application.

[0021] Figure 5Schematic cross-sectional perspective view of the first air-cooling component or the second air-cooling component of the nozzle kit provided in another embodiment of the present application.

[0022] Figure 6 Schematic perspective view of the 3D printing device provided in an embodiment of the present application.

[0023] Description of main element symbols

[0024] Nozzle kit 10

[0025] Bracket 11

[0026] Nozzle assembly 12

[0027] Heat dissipation part 121

[0028] Heating part 122

[0029] Discharge end 123

[0030] First air-cooling component 13

[0031] First housing 131

[0032] First air guide 132

[0033] First air flow generating part 133

[0034] First air cavity 134

[0035] First air guide plate 135

[0036] First air duct 136

[0037] First air outlet 137

[0038] Second air-cooling component 14

[0039] Second housing 141

[0040] Second air guide 142

[0041] Second air flow generating part 143

[0042] Second air cavity 144

[0043] Second air guide plate 145

[0044] Second air duct 146

[0045] Second air outlet 147

[0046] Short axis X

[0047] 3D printing device 1

[0048] Forming platform 17

[0049] Drive assembly 18

[0050] The following specific embodiments will further illustrate the present application in conjunction with the above-mentioned drawings. Specific embodiments

[0051] The following description will describe the content of the present application more comprehensively with reference to the drawings. The exemplary embodiments of the present application are shown in the drawings. However, the present application can be implemented in many different forms and should not be construed as limited to the exemplary embodiments set forth herein. These exemplary embodiments are provided to make the present application thorough and complete, and to fully convey the scope of the present application to those skilled in the art. Similar reference numerals denote the same or similar components. The terms used herein are for the purpose of describing specific exemplary embodiments only and are not intended to limit the present application. As used herein, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include the plural forms as well. In addition, when used herein, "comprising" and / or "including" and / or "having", integers, steps, operations, components and / or components, but do not exclude the presence or addition of one or more other features, regions, integers, steps, operations, components and / or their groups. Unless otherwise defined, all terms 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 belongs. In addition, unless clearly defined in the text, terms such as those defined in a general dictionary should be construed as having a meaning consistent with their meaning in the relevant art and the content of this application, and will not be construed as idealized or overly formal meanings.

[0052] Generally, when a 3D printer works, it first melts the raw material and sprays it out from the nozzle. The raw material accumulates in a certain way to form a three-dimensional object. After the raw material is sprayed out from the nozzle, it needs to quickly solidify to ensure that the processed object has a certain structural strength and surface quality. Therefore, it is necessary to additionally provide an air-cooling component outside the nozzle assembly to cool the consumables sprayed out from the nozzle. In the prior art, an air-cooling component with a relatively high power is usually arranged beside the nozzle assembly to perform air-cooling heat dissipation on the consumables sprayed out from the nozzle. However, in order to achieve the necessary heat dissipation effect, the power of this air-cooling component is usually relatively large, resulting in an increase in the overall power of the 3D printer, which does not conform to the development trend of miniaturization of household 3D printers. Moreover, in order to avoid interference of the high-power air-cooling component on the nozzle assembly, the motor or blower in the air-cooling component may be relatively far from the discharge end of the nozzle; in order to transmit the airflow generated by the motor or blower to the discharge end of the nozzle, it is necessary to provide a certain length of air duct inside the air-cooling component for guiding, which not only increases the volume of the air-cooling component, but also increases the energy loss and power consumption of the air-cooling component.

[0053] Correspondingly, an embodiment of the present application provides a nozzle set and a 3D printing device using the same. The nozzle set includes a nozzle assembly for heating a consumable and extruding it from a discharge end. The nozzle set further includes a first air-cooling component and a second air-cooling component. The first air-cooling component includes a first air outlet facing the discharge end; the second air-cooling component includes a second air outlet facing the discharge end. The first air-cooling component and the second air-cooling component are arranged on opposite sides of the nozzle assembly, and the direction of the air flow blown out from the first air outlet is different from the direction of the air flow blown out from the second air outlet.

[0054] Furthermore, an embodiment of the present application provides a nozzle set. The nozzle set includes a first air-cooling component and a second air-cooling component spaced apart on opposite sides of the nozzle assembly. The first air outlet and the second air outlet both face the discharge end and cooperate with each other to improve the cooling effect at the discharge end. Compared with traditional high-power single air-cooling, the single power consumption of the first air-cooling component and the second air-cooling component can be lower. However, the first air-cooling component and the second air-cooling component together cool the nozzle assembly, so the necessary cooling effect can still be achieved. At the same time, compared with traditional high-power single air-cooling, the first air-cooling component and the second air-cooling component can be smaller in volume and shorter in air duct, and their corresponding energy utilization efficiency can be higher. Moreover, the first air-cooling component and the second air-cooling component are arranged on opposite sides of the nozzle assembly, and the direction of the air flow blown out from the first air outlet is different from the direction of the air flow blown out from the second air outlet. The first air-cooling component and the second air-cooling component cooperate to generate a cyclone vortex at the discharge end, further improving the cooling effect, making the cooling more uniform, and at the same time reducing the power consumption of the first air-cooling component and the second air-cooling component.

[0055] Those skilled in the art can understand that "3D printing" refers to a technology that constructs an object by layer-by-layer printing based on a digital model file, using powdery metals, plastics, or other bondable materials.

[0056] The following content will describe exemplary embodiments with reference to the accompanying drawings. It should be noted that the components depicted in the reference drawings are not necessarily shown to scale; and the same or similar components will be denoted by the same or similar reference numerals or similar technical terms.

[0057] Next, with reference to the accompanying drawings, the specific embodiments of the present application will be further described in detail.

[0058] As Figures 1 to 5As shown in the figure, an embodiment of the present application provides a nozzle assembly 10, which includes a bracket 11, a nozzle assembly 12, a first air-cooling component 13, and a second air-cooling component 14. The nozzle assembly 12, the first air-cooling component 13, and the second air-cooling component 14 are all connected to the bracket 11 to determine the positions of the nozzle assembly 12, the first air-cooling component 13, and the second air-cooling component 14 relative to each other. The nozzle assembly 12 is used to heat the consumable and extrude it from a discharge end 123. The first air-cooling component 13 and the second air-cooling component 14 are arranged on opposite sides of the nozzle assembly 12 and are used to cool the molten consumable extruded from the discharge end 123 of the nozzle assembly 12.

[0059] In one embodiment, the first air-cooling component 13 includes a first air outlet 137, and the first air outlet 137 is arranged facing the discharge end 123; the second air-cooling component 14 includes a second air outlet 147, and the second air outlet 147 is arranged facing the discharge end 123; the direction of the air flow blown out from the first air outlet 137 is different from the direction of the air flow blown out from the second air outlet 147.

[0060] It can be understood that the nozzle assembly 10 provided by the embodiment of the present application includes the first air-cooling component 13 and the second air-cooling component 14 that are spaced apart on opposite sides of the nozzle assembly 12. The first air outlet 137 and the second air outlet 147 are both arranged facing the discharge end 123 and cooperate with each other to improve the cooling effect at the discharge end 123. Compared with the traditional high-power single air-cooling, the power consumption of the first air-cooling component 13 and the second air-cooling component 14 can be lower. However, the first air-cooling component 13 and the second air-cooling component 14 cool the nozzle assembly 12 together, so a good cooling effect can still be achieved. At the same time, compared with the traditional high-power single air-cooling, the first air-cooling component 13 and the second air-cooling component 14 can be smaller in volume and shorter in air duct, and their corresponding energy utilization efficiency can be higher. Moreover, the first air-cooling component 13 and the second air-cooling component 14 are arranged on opposite sides of the nozzle assembly 12, and the direction of the air flow blown out from the first air outlet 137 is different from the direction of the air flow blown out from the second air outlet 147. The first air-cooling component 13 and the second air-cooling component 14 cooperate to generate a cyclone vortex at the discharge end 123, further improving the cooling effect, making the cooling more uniform, and at the same time reducing the power consumption of the first air-cooling component 13 and the second air-cooling component 14.

[0061] In one embodiment, the line connecting the first air outlet 137, the second air outlet 147, and the discharge end 123 is the short axis X, the airflow blown out by the first air outlet 137 is offset toward the discharge end 123 and facing one side of the short axis X, and the airflow blown out by the second air outlet 147 is offset toward the discharge end 123 and facing the other side of the short axis X. That is, the airflow blown out of the first air outlet 137 is directed toward the discharge end 123 in a direction directly facing the second air-cooling component 14, and is slightly offset to the side away from the discharge end 123 compared to the short axis X, and the airflow blown out of the second air outlet 147 is directed toward the discharge end 123 in a direction directly facing the first air-cooling component 13, and is slightly offset to the side away from the discharge end 123 compared to the short axis X; this allows the airflow blown out of the first air outlet 137 and the airflow blown out of the second air outlet 147 to be in a state of roughly surrounding the discharge end 123, and is further used to help generate a cyclonic vortex that roughly surrounds the discharge end 123 at the discharge end 123.

[0062] It can be understood that the airflow blown out by the first air outlet 137 is offset toward the discharge end 123 and one side facing the short axis X, and the airflow blown out by the second air outlet 147 is offset toward the discharge end 123 and the other side facing the short axis X. The first air-cooling component 13 and the second air-cooling component 14 are combined at the discharge end 123 to generate a cyclone vortex.

[0063] In this embodiment, the short axis X is taken as an example to illustrate the straight line connecting the midpoint of the first air outlet 137 , the midpoint of the discharge end 123 , and the midpoint of the second air outlet 147 .

[0064] In one embodiment, the bracket 11 is used to connect the nozzle assembly 12 , the first air-cooling component 13 , and the second air-cooling component 14 . Meanwhile, the nozzle assembly 12 can also be connected and fixed to other external structures through the bracket 11 .

[0065] In one embodiment, the nozzle assembly 12 at least includes a heat dissipation portion 121, a heating portion 122 and a discharge end 123, and the heat dissipation portion 121 and the heating portion 122 are respectively connected to the discharge end 123. The heating portion 122 can heat the discharge end 123 to melt the consumables therein, and the heat dissipation portion 121 is thermally coupled with the discharge end 123 and / or the heating portion 122 to achieve heat dissipation of the nozzle assembly 12. The discharge end 123 is located at the bottom of the nozzle assembly 12, and correspondingly, the first air outlet 137 is located at the bottom of the first air-cooling component 13, and the second air outlet 147 is located at the bottom of the second air-cooling component 14, and the discharge end 123, the first air outlet 137 and the second air outlet 147 are correspondingly arranged.

[0066] It can be understood that the structures of the heat dissipation part 121, the heating part 122 and the discharge end 123 can be known and feasible structures, and their specific structures are not repeated here.

[0067] In one embodiment, the first air-cooling component 13 and the second air-cooling component 14 are symmetrically arranged on two opposite sides of the nozzle assembly 12.

[0068] In this embodiment, the first air-cooling component 13 and the second air-cooling component 14 can be air-cooling units with the same structure. The first air-cooling component 13 and the second air-cooling component 14 are arranged such that the first air outlet 137 and the second air outlet 147 both face the discharging end 123, and are rotationally symmetric with the endpoint of the discharging end 123 as the symmetry origin.

[0069] In one embodiment, the first air-cooling component 13 is configured to be able to eject gas from the first air outlet 137 to form an air flow, and the second air-cooling component 14 is configured to be able to eject gas from the second air outlet 147 to form an air flow. The first air-cooling component 13 and the second air-cooling component 14 are used in cooperation to generate a cyclone eddy current around the discharging end 123.

[0070] In one embodiment, both the first air outlet 137 and the second air outlet 147 face the discharging end 123, and the first air outlet 137 and the second air outlet 147 are respectively inclined towards two opposite sides of the discharging end 123. That is, while the first air outlet 137 and the second air outlet 147 are arranged facing the discharging end 123, they are slightly inclined towards two opposite directions respectively, avoiding the direct collision of the gas blown out from the first air outlet 137 and the gas blown out from the second air outlet 147 at the discharging end 123, but rather cooperating with each other to generate a cyclone eddy current. This cyclone eddy current can rotate around the discharging end 123 as the approximate center point. On the one hand, the generation of the cyclone eddy current can avoid the air flow disorder caused by the air flow counteracting and the poor heat dissipation effect; on the other hand, the cyclone eddy current dissipates heat more evenly around the discharging end 123 and at a faster speed, making the overall heat dissipation effect better.

[0071] It can be understood that based on the placement manner of the first air-cooling component 13 and the second air-cooling component 14, it can be ensured that the air blown out from the first air-cooling component 13 and the second air-cooling component 14 faces the discharging end 123 but does not directly counteract, and at the same time, there is a certain deflection angle between the air blown out from the first air-cooling component 13 and the second air-cooling component 14, thereby forming a cyclone eddy current around the discharging end 123 to improve the cooling efficiency.

[0072] In one embodiment, the first air-cooling component 13 includes a first housing 131 and a first air guiding member 132, and the first air outlet 137 is located on the first air guiding member 132. The first housing 131 has a first air cavity 134 inside, and the first housing 131 is connected to the first air guiding member 132 so that the first air cavity 134 is communicated with the first air outlet 137.

[0073] In one embodiment, the second air-cooling component 14 includes a second housing 141 and a second air guide member 142. The second air outlet 147 is located in the second air guide member 142. A second air cavity 144 is formed inside the second housing 141. The second housing 141 is connected to the second air guide member 142 to communicate the second air cavity 144 with the second air outlet 147.

[0074] It can be understood that the first housing 131 is used to enclose and form a first air cavity 134, and the first air guide member 132 is used to form a first air guide duct 136. The first air cavity 134 communicates with the first air outlet 137 through the first air guide duct 136 to direct the cooling air flow in the first air-cooling component 13 to the discharge end 123. The second housing 141 is used to enclose and form a second air cavity 144, and the second air guide member 142 is used to form a second air guide duct 146. The second air cavity 144 communicates with the second air outlet 147 through the second air guide duct 146 to direct the cooling air flow in the second air-cooling component 14 to the discharge end 123. The first air guide member 132 is directly connected to the first housing 131, and the overall air duct distance of the first air-cooling component 13 can be made shorter. The second air guide member 142 is directly connected to the second housing 141, and the overall air duct distance of the second air-cooling component 14 can be designed to be shorter, which is convenient for improving the air flow transmission efficiency and enhancing the cooling efficiency.

[0075] In one embodiment, the first air-cooling component 13 further includes a first air flow generating member 133. The first air flow generating member 133 is disposed inside the first housing 131 and is used to generate an air flow and direct it through the first air cavity 134 and the first air outlet 137 to blow towards the discharge end 123. The second air-cooling component 14 further includes a second air flow generating member 143. The second air flow generating member 143 is disposed inside the second housing 141 and is used to generate an air flow and direct it through the second air cavity 144 and the second air outlet 147 to blow towards the discharge end 123.

[0076] In this embodiment, the first air flow generating member 133 can be embedded in the side wall of the first housing 131. The first air flow generating member 133 has an opening communicating with the outside, which is used to introduce the air flow outside the first air-cooling component 13 into the first air cavity 134 and further export it to the first air outlet 137. The first air flow generating member 133 can be located on one side of the first housing 131, and the other side is connected with the first air guide member 132, so that the air cavity between the first air flow generating member 133 and the first air outlet 137 is generally wider and shorter, which is used to improve the air flow transmission efficiency.

[0077] In this embodiment, the second air flow generating member 143 can be embedded in the side wall of the second housing 141. The second air flow generating member 143 has an opening communicating with the outside, and is used to introduce the air flow outside the second air cooling member 14 into the second air cavity 144 and further export it to the second air outlet 147. The second air flow generating member 143 can be located on one side of the second housing 141, and a second air guiding member 142 is connected to the other side, so that the air cavity between the second air flow generating member 143 and the second air outlet 147 is generally wider and shorter, which is used to improve the air flow transmission efficiency.

[0078] It can be understood that both the first air flow generating member 133 and the second air flow generating member 143 can be fans, which can be known and feasible components, and their specific structures, electronic control methods, etc. will not be elaborated here.

[0079] In other embodiments, the first air flow generating member 133 and the second air flow generating member 143 may not be provided, but the first air cooling member 13 and the second air cooling member 14 are directly communicated with an external cold air supply component (not shown in the figure).

[0080] In one embodiment, a plurality of first air guiding plates 135 are provided at the first air outlet 137. The first air guiding plates 135 are inclined with respect to the discharge end 123. A plurality of second air guiding plates 145 are provided at the second air outlet 147. The second air guiding plates 145 are inclined with respect to the discharge end 123.

[0081] In one embodiment, a plurality of first air guiding plates 135 are provided at the first air outlet 137. The first air guiding plates 135 are inclined with respect to the short axis X. A plurality of second air guiding plates 145 are provided at the second air outlet 147. The second air guiding plates 145 are inclined with respect to the short axis X.

[0082] In this embodiment, a plurality of first air guiding plates 135 are provided in the first air guiding member 132 to obtain a plurality of first air guiding channels 136, so that the air blown out from the first air outlet 137 is more uniform; at the same time, setting a plurality of first air guiding plates 135 can facilitate the control of the air flow direction blown out from the first air outlet 137. Similarly, a plurality of second air guiding plates 145 are provided in the second air guiding member 142 to obtain a plurality of second air guiding channels 146, which is convenient for controlling the air flow direction blown out from the second air outlet 147 and making the air blown out from the second air outlet 147 more uniform.

[0083] It can be understood that by adjusting the first air guiding plate 135 and the second air guiding plate 145 to be inclined with respect to the discharge end 123 and / or the short axis X, the air flow directions blown out from the first air outlet 137 and the second air outlet 147 can be adjusted. By adjusting the inclination angles of the first air guiding plate 135 and the second air guiding plate 145 with respect to the discharge end 123 and / or the short axis X, the air flow directions blown out from the first air outlet 137 and the second air outlet 147 are changed.

[0084] In one embodiment, the first air deflector 135 and the second air deflector 145 are straight plates or arc-shaped plates.

[0085] It can be understood that the shapes, inclination angles, bending degrees, etc. of the first air deflector 135 and the second air deflector 145 can be adjusted according to actual needs to obtain the required air flow direction and / or angle.

[0086] Further in combination with Figure 6 As shown, the embodiment of the present application further provides a 3D printing device 1, which includes a forming platform 17, a driving component 18, and a nozzle kit 10 as described in any one of the foregoing embodiments. The driving component 18 drives the nozzle kit 10 to move relative to the forming platform 17.

[0087] In the foregoing, the specific embodiments of the present application have been described with reference to the accompanying drawings. However, those of ordinary skill in the art can understand that various changes and substitutions can be made to the specific embodiments of the present application without departing from the spirit and scope of the present application. These changes and substitutions all fall within the scope defined by the present application.

Claims

1. A nozzle kit, comprising a nozzle assembly, wherein the nozzle assembly is used to extrude a consumable material from a discharge end after heating the consumable material, characterized in that: The nozzle kit also includes: A first air cooling component, comprising a first air outlet, wherein the first air outlet is arranged toward the discharge end; A second air-cooling component, comprising a second air outlet, wherein the second air outlet is arranged toward the discharge end; The first air-cooling component and the second air-cooling component are arranged on opposite sides of the nozzle assembly, and the direction of the airflow blown out of the first air outlet is different from the direction of the airflow blown out of the second air outlet.

2. The nozzle kit according to claim 1, characterized in that: The first air-cooling component and the second air-cooling component are symmetrically arranged on two opposite sides of the nozzle assembly.

3. The nozzle kit according to claim 1, characterized in that: The first air-cooling component is configured to eject gas from the first air outlet to form an airflow, and the second air-cooling component is configured to eject gas from the second air outlet to form an airflow. The first air-cooling component and the second air-cooling component are used to cooperate to generate a cyclonic vortex around the discharge end.

4. The nozzle kit according to claim 3, characterized in that: The first air outlet and the second air outlet both face the discharge end, and the first air outlet and the second air outlet are respectively inclined toward two opposite sides of the discharge end.

5. The nozzle kit according to claim 1, characterized in that: The first air-cooling component includes a first shell and a first air guide, the first air outlet is located at the first air guide, the first shell has a first air cavity inside, the first shell is connected to the first air guide, so that the first air cavity is connected to the first air outlet.

6. The nozzle kit according to claim 5, characterized in that: The second air-cooling component includes a second shell and a second air guide, the second air outlet is located at the second air guide, the second shell has a second air cavity inside, the second shell is connected to the second air guide, so that the second air cavity is connected to the second air outlet.

7. The nozzle kit according to claim 6, characterized in that: The first air-cooling component also includes a first airflow generating member, which is arranged inside the first shell, and is used to generate an airflow and guide it through the first air cavity and the first air outlet to blow toward the discharge end. The second air-cooling component also includes a second airflow generating member, which is arranged inside the second shell, and is used to generate an airflow and guide it through the second air cavity and the second air outlet to blow toward the discharge end.

8. The spray head kit according to claim 1, characterized in that: A plurality of first air guide plates are provided at the first air outlet, and the first air guide plates are inclined relative to the discharge end. A plurality of second air guide plates are provided at the second air outlet, and the second air guide plates are inclined relative to the discharge end. The inclined directions of the inclined first air guide plates and the inclined second air guide plates are different.

9. The spray head kit according to claim 8, characterized in that: The first air guide plate and the second air guide plate are in a straight plate shape or an arc plate shape.

10. A 3D printing device, characterized in that: It comprises a molding platform, a driving component and a nozzle kit as described in any one of claims 1 to 9, wherein the driving component drives the nozzle kit to move relative to the molding platform.

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