Heating piece, nozzle assembly and 3D printer

Abstract

The utility model provides a heating piece, a nozzle assembly and a 3D printer, and belongs to the technical field of 3D printing. The heating piece comprises a body, a flow dividing piece and at least one supporting piece. The body is provided with a flow guide channel penetrating through the body. The flow guide channel is provided with an inlet end and an outlet end. The flow dividing piece is contained in the flow guiding channel, and a gap channel is formed between the flow dividing piece and the channel wall of the flow guiding channel. The supporting piece is contained in the gap channel, one side of the supporting piece is connected with the channel wall of the gap channel, and the other end of the supporting piece is connected with the side wall of the flow dividing piece. The flow dividing piece is provided with a flow dividing channel, the flow dividing channel is provided with a feeding port and at least one discharging port, the feeding port is formed in the side, close to the inlet end, of the flow dividing piece, and the discharging port is close to the outlet end and communicates with the gap channel. The heating element provided by the utility model not only can improve the heating efficiency of the consumables, but also can improve the heating uniformity of the consumables and improve the melting speed of the consumables.

Description

Technical Field

[0001] This application relates to the field of 3D printing technology, and particularly to a heating element, a nozzle assembly and a 3D printer. Background Art

[0002] After the consumable material in the existing heating block enters the melting channel, the temperature is transferred from the outside to the inside to the consumable wire. Since the consumable material is mostly made of plastic, the heat conduction is poor. It is difficult for the outer layer temperature to be quickly introduced into the inner core of the consumable material. When the consumable material to be entered is very fast during rapid printing and needs to be quickly melted and then extruded, the melting channel in the existing heating block only heats and melts the peripheral part of the consumable material, which not only results in low melting efficiency of the consumable material, but also uneven melting of the consumable material. Summary of the Utility Model

[0003] In view of this, the purpose of this application is to overcome the deficiencies in the prior art and provide a heating element, a nozzle assembly and a 3D printer.

[0004] In a first aspect, this application provides a heating element, including:

[0005] A body provided with a diversion channel penetrating through the body, the diversion channel having an inlet end and an outlet end;

[0006] A shunt member received in the diversion channel and spaced from the channel wall of the diversion channel to form a gap channel;

[0007] At least one support member received in the gap channel, one side of the support member being connected to the channel wall of the gap channel, and the other end of the support member being connected to the side wall of the shunt member;

[0008] The shunt member is provided with a shunt channel having a feed port and a plurality of spaced discharge ports, the feed port being disposed on a side of the shunt member close to the inlet end, and the discharge ports being close to the outlet end and communicating with the gap channel.

[0009] In some embodiments, the feed port and the discharge port define at least one lateral flow channel, one end of the lateral flow channel communicating with the feed port and the other end of the lateral flow channel communicating with the discharge port.

[0010] In some embodiments, the feed port is provided with a diversion groove, and one end of the lateral flow channel located at the feed port can communicate with the feed port through the diversion groove.

[0011] In some embodiments, the diameter of the diversion groove is tapered from a side close to the inlet end to a side close to the outlet end.

[0012] In some embodiments, the caliber of the discharge port is larger than the inner diameter of the lateral flow channel, and there is a gap between the discharge port and the support member.

[0013] In some embodiments, the included angle between the guiding direction of each lateral flow channel and the axis of the flow splitting member is α, where the value range of α is 10° ≤ α ≤ 45°.

[0014] In some embodiments, there are two support members, and the two support members are respectively arranged on two opposite sides of the flow splitting member;

[0015] There are two discharge ports, and the two discharge ports are respectively arranged on two opposite sides of the flow splitting member. The discharge ports and the support members are arranged at equal intervals along the outer periphery of the flow splitting member.

[0016] In a second aspect, some embodiments of the present application provide a nozzle assembly, including a flow guiding member, a heater, a nozzle head, and the heating member as described above;

[0017] The heating member is provided with a first installation channel, and the heater is arranged in the first installation channel;

[0018] The flow guiding member and the nozzle head are respectively arranged on two opposite sides of the body. The nozzle head is communicated with the outlet end, and the flow guiding member is communicated with the inlet end.

[0019] In some embodiments, the flow guiding member includes a heat dissipation pipe, a throat pipe, and a connecting member;

[0020] The heat dissipation pipe and the connecting member are respectively sleeved at both ends of the throat pipe, and the connecting member is connected to the heating member.

[0021] In some embodiments, the heating member is provided with a second installation channel, and the nozzle assembly further includes a temperature sensor, and the temperature sensor is arranged in the second installation channel.

[0022] In a third aspect, some embodiments of the present application provide a 3D printer, including the heating member or the nozzle assembly as described above.

[0023] The embodiments of the present application have the following advantages: By arranging a flow splitting member in the guiding channel, the core part and the outer peripheral part of the consumable are peeled off through the flow splitting member, and the core part of the consumable is heated through the channel wall of the splitting channel, and the outer peripheral part of the consumable is heated through the channel wall of the gap channel, which can not only improve the heating efficiency of the consumable, but also effectively improve the uniformity of heating the consumable and increase the melting speed of the consumable.

[0024] To make the above objects, features, and advantages of the present application more obvious and understandable, the following specifically enumerates preferred embodiments and, in conjunction with the accompanying drawings, makes a detailed description as follows. Brief Description of the Drawings

[0025] To more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application and should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0026] Figure 1 Fig. shows a schematic structural view of a heating element from one perspective provided by some embodiments of the present application;

[0027] Figure 2 Fig. shows a schematic structural view of a heating element from another perspective provided by some embodiments of the present application;

[0028] Figure 3 Fig. shows Figure 2 a cross-sectional view taken along line A-A in;

[0029] Figure 4 Fig. shows schematic structural views of a heating element from other perspectives provided by some embodiments of the present application;

[0030] Figure 5 Fig. shows a schematic structural view of a nozzle assembly from one perspective provided by some embodiments of the present application;

[0031] Figure 6 Fig. shows a schematic structural view of a nozzle assembly from another perspective provided by some embodiments of the present application;

[0032] Figure 7 Fig. shows Figure 6 a cross-sectional view taken along line B-B in.

[0033] Main Element Symbol Description:

[0034] 100 - heating element; 111 - diversion channel; 110 - body; 1111 - inlet end; 1112 - outlet end; 120 - shunt member; 130 - clearance channel; 140 - support member; 121 - shunt channel; 1211 - diversion groove; 1212 - lateral flow channel; 1213 - shunt port; 1214 - feed port; 1215 - discharge port; 200 - drainage member; 300 - heater; 400 - nozzle; 150 - first installation channel; 210 - heat dissipation pipe; 220 - throat; 230 - connecting member; 160 - second installation channel; 500 - temperature sensor. Detailed Description of the Embodiments

[0035] Embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application and should not be construed as a limitation of the present application.

[0036] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. On the contrary, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0037] In the present application, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0038] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, the meaning of "a plurality" is two or more unless otherwise specifically defined.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used in the specification of this template herein are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0040] As Figures 1 to 4 shown, some embodiments of the present application provide a heating element, which is mainly applied to a nozzle assembly and a 3D printer to improve the uniformity and heating efficiency of heating the consumables.

[0041] The heating element 100 includes a main body 110, a flow splitting member 120, and at least one support member 140. It can be understood that the number of support members 140 can be one, two, or more than two, and can be specifically set according to the actual situation.

[0042] Among them, the main body 110 is provided with a diversion channel 111 penetrating through the main body 110 to provide a diversion effect on the consumables through the diversion channel 111. The diversion channel 111 has an inlet end 1111 and an outlet end 1112, that is, the consumables can enter the diversion channel 111 through the inlet end 1111, and the consumables entering the diversion channel 111 are heated by the channel wall of the channel, and the consumables are softened and melted and then discharged from the outlet end 1112.

[0043] In addition, the flow splitting member 120 is received in the diversion channel 111, and a gap channel 130 is formed at an interval between the flow splitting member 120 and the channel wall of the diversion channel 111. The shapes of the flow splitting member 120 and the gap channel 130 are not limited herein and can be adjusted according to actual needs.

[0044] It should be noted that the gap channel 130 can be at least one of an annular channel, a sector channel, an arc channel, a spiral channel, a conical channel, and a strip channel.

[0045] In this embodiment, taking the gap channel 130 as an annular channel as an example, the following specific description is made.

[0046] The support member 140 is received in the gap channel 130. One side of the support member 140 is connected to the channel wall of the gap channel 130, and the other side of the support member 140 is connected to the side wall of the flow splitting member 120, so as to connect the flow splitting member 120 and the main body 110 through the support member 140, that is, the support member 140 can provide a support and fixation effect on the flow splitting member 120, and improve the stability of the flow splitting member 120 in the diversion channel 111.

[0047] In one embodiment, the main body 110 and the plurality of support members 140 are of an integral structure. That is to say, the support member 140 can be processed by an integral molding method. Of course, in other embodiments of the present application, the support member 140 is press-fitted or snap-fitted to the main body 110. That is to say, the support member 140 is an insert member, and it is arranged in the inner cavity of the main body 110 to form a structural form of a plurality of gap channels 130.

[0048] It should be noted that the support member 140 can conduct the heat of the main body 110 to the flow dividing member 120 to heat the flow dividing member 120, ensuring that the temperature of the flow dividing member 120 is the same as that of the main body 110, so as to make the flow dividing member 120, the support member 140 and the main body 110 have uniform heating and heating efficiency for the consumables entering the diversion channel 111.

[0049] In this embodiment, the flow dividing member 120 is of a cylindrical structure, the diversion channel 111 is a cylindrical channel, the gap channel 130 is an annular channel, and the axes of the flow dividing member 120, the diversion channel 111 and the gap channel 130 coincide to ensure the uniformity of heating the outer peripheral parts of the consumables by the channel wall of the gap channel 130 and the outer wall of the flow dividing member 120 respectively.

[0050] Further, the flow dividing member 120 is provided with a flow dividing channel 121, and the flow dividing channel 121 has a feed port 1214 and at least one discharge port 1215. It can be understood that the number of the discharge ports 1215 can be any value of one or more, and can be specifically set according to the actual situation.

[0051] In this embodiment, by arranging the flow dividing channel 121 in the flow dividing member 120, the core part of the consumables entering the diversion channel 111 can enter the flow dividing channel 121 through the feed port 1214, so that the core part and the outer peripheral part of the consumables can be separated by the flow dividing member 120, thereby realizing simultaneous heating of the core part and the outer peripheral part of the consumables and improving the melting efficiency of the consumables. The inner wall of the flow dividing channel 121 heats the core part of the consumables, and the outer wall of the flow dividing channel 121 and the channel wall of the diversion channel 111 heat the outer peripheral part of the consumables to improve the heating efficiency and heating uniformity of the consumables.

[0052] Specifically, the feed port 1214 is arranged on one side of the flow dividing member 120 close to the inlet end 1111, so that the consumables entering the diversion channel 111 through the inlet end 1111 can enter the flow dividing channel 121 through the feed port 1214.

[0053] By arranging the plurality of discharge ports 1215 at intervals on the circumferential side of the flow dividing member 120, and the discharge ports 1215 are communicated with the gap channel 130, after the core part of the consumables is heated by the channel wall of the flow dividing channel 121, the softened and melted consumables can be discharged into the gap channel 130 through the discharge ports 1215.

[0054] It should be noted that by positioning the discharge port 1215 close to the outlet end 1112, the flow path of the consumable material in the diversion channel 121 is increased, thereby increasing the heating duration of the consumable material in the diversion channel 121, so as to improve the heating quality and heating efficiency of the core part of the consumable material by the channel wall of the diversion channel 121.

[0055] In addition, in some embodiments, a plurality of discharge ports 1215 are arranged at equal intervals along the outer periphery of the diverter 120 to improve the uniformity of the consumable material entering the gap channel 130 after being discharged from the discharge port 1215. The consumable material discharged through the discharge port 1215 is mixed with the consumable material in the gap channel 130 and then discharged from the outlet end 1112.

[0056] It can be understood that by providing the diverter 120 in the diversion channel 111, the core part and the outer peripheral part of the consumable material are separated by the diverter 120, the core part of the consumable material is heated by the channel wall of the diversion channel 121, and the outer peripheral part of the consumable material is heated by the channel wall of the gap channel 130. This not only improves the heating efficiency of the consumable material, but also effectively improves the heating uniformity of the consumable material, enhances the fluidity of the consumable material, and increases the melting speed of the consumable material.

[0057] As Figure 3 shown, in some embodiments of the present application, the feed port 1214 and the discharge port 1215 define at least one lateral flow channel 1212. It can be understood that the number of the lateral flow channels 1212 can be any value of one or more, and can be specifically set according to the actual situation.

[0058] Among them, one end of the lateral flow channel 1212 is communicated with the feed port 1214, and the other end of the lateral flow channel 1212 is communicated with the discharge port 1215, so that the consumable material can enter the lateral flow channel 1212 from the feed port 1214 and be discharged from the discharge port 1215. In addition, the feed port 1214 is provided with a diversion groove 1211. One end of the lateral flow channel 1212 located at the feed port 1214 can be communicated with the feed port 1214 through the diversion groove 1211, and one end of the lateral flow channel 1212 located at the discharge port 1215 can be communicated with the gap channel 130 through the discharge port 1215, so that the consumable material entering the diversion groove 1211 can flow into the lateral flow channels 1212 respectively, and after being heated and melted by the inner wall of the lateral flow channel 1212, it is discharged from the discharge port 1215.

[0059] In some embodiments, there are multiple lateral channels 1212. One ends of the multiple lateral channels 1212 communicating with the discharge port 1215 are arranged at intervals. It can be understood that the number of lateral channels 1212 is equal to the number of discharge ports 1215, and one lateral channel 1212 corresponds to one discharge port 1215. By increasing the number of lateral channels 1212, the core part of the consumable is separated into multiple regions, and each region of the core part of the consumable is heated separately through the inner wall of the lateral channel 1212, so as to improve the heating efficiency of the core part.

[0060] As Figure 3 shown, in some embodiments of the present application, the caliber of the diversion groove 1211 is gradually reduced from the side close to the inlet end 1111 to the side close to the outlet end 1112, so as to increase the flow velocity of the consumable in the diversion groove 1211, so that the consumable can quickly enter the multiple lateral channels 1212 under the action of thrust, and the consumable is heated through the inner wall of the lateral channel 1212, thereby improving the heating efficiency of the consumable.

[0061] As Figure 3 and Figure 4 shown, in some embodiments of the present application, the caliber of the discharge port 1215 is larger than the inner diameter of the lateral channel 1212, and there is a gap between the discharge port 1215 and the support member 140, so as to ensure the smooth discharge of the consumable from the discharge port 1215 after being heated by the inner wall of the lateral channel.

[0062] In addition, the inner diameter of the lateral channel 1212 gradually increases from the end close to the feed port 1214 to the end close to the discharge port 1215, so that the lateral channel 1212 can accommodate an increasing amount of softened consumable, thereby improving the flow smoothness of the consumable in the lateral channel 1212.

[0063] As Figure 3 and Figure 4 shown, in some embodiments of the present application, a diversion port 1213 is provided at the bottom of the diversion groove 1211. The diversion port 1213 communicates the lateral channel 1212 and the diversion groove 1211, so that the consumable entering the diversion groove 1211 can enter the multiple lateral channels 1212 through the diversion port 1213 respectively, thereby separating the core part of the consumable into multiple heating parts, so as to further increase the contact area between the inner wall of the lateral channel 1212 and the core part of the consumable, thereby increasing the heat conduction speed between the core part of the consumable and the shunt member 120, and thereby improving the heating and melting efficiency of the core part of the consumable.

[0064] As Figure 3As shown, in some embodiments of the present application, the angle between the guiding direction of each of the lateral channels 1212 and the axis of the flow splitter 120 is α, where the value range of α is 10° ≤ α ≤ 45°.

[0065] It can be understood that the value range of α can be one of 10° ≤ α ≤ 45°, 15° ≤ α ≤ 45°, 20° ≤ α ≤ 45°, 25° ≤ α ≤ 45°, 30° ≤ α ≤ 45°, 35° ≤ α ≤ 45°, and 40° ≤ α ≤ 45°.

[0066] It should be noted that through the angle between the guiding direction of the lateral channel 1212 and the axis of the flow splitter 120, not only can the length of the lateral channel 1212 be adjusted to adjust the heating and melting efficiency of the consumable in the lateral channel 1212, but also the consumable can have a tendency to flow towards the discharge port 1215 under its own gravity, thereby improving the fluidity and stability of the consumable flowing in the lateral channel 1212 and enhancing the heating and melting efficiency of the core part of the consumable.

[0067] As Figure 4 shown, in some embodiments of the present application, there are two support members 140, and the two support members 140 are respectively arranged on two opposite sides of the flow splitter 120 to increase the heat conduction area between the flow splitter 120 and the main body 110 by increasing the number of support members 140, thereby improving the heat conduction efficiency between the main body 110 and the flow splitter 120.

[0068] Among them, there are two discharge ports 1215, and the two discharge ports 1215 are respectively arranged on two opposite sides of the flow splitter 120 to improve the discharge efficiency of the consumable after melting through the channel wall of the lateral channel. By arranging the discharge ports 1215 and the support members 140 at equal intervals along the outer periphery of the flow splitter 120, the support members 140 are prevented from blocking the discharge ports 1215, thereby ensuring the fluidity of the consumable flowing in the lateral channel.

[0069] As Figure 4 shown, in some embodiments of the present application, the side of the support member 140 adjacent to the gap channel 130 is a concave surface.

[0070] In this embodiment, the concave surface is an arc-shaped concave surface, which can not only increase the contact area between the support member 140 and the consumable in the gap channel 130, thereby improving the heating and melting efficiency of the consumable in the gap channel 130, but also increase the contact area between the support member 140 and the inner wall of the guiding channel 111, and at the same time increase the contact area between the support member 140 and the outer wall of the flow splitter 120, thereby improving the heat conduction efficiency between the main body 110 and the flow splitter 120, and thus improving the heating and melting efficiency of the core part of the consumable by the flow splitter 120.

[0071] As Figures 5 to 7 shown, some embodiments of the present application provide a nozzle assembly, including a flow guiding member 200, a heater 300, a nozzle head 400, and the heating member 100 described in any one of the above embodiments.

[0072] Wherein, the heating member 100 is provided with a first installation channel 150, there is a gap between the first installation channel 150 and the diversion channel 111, and the first installation channel 150 is close to the diversion channel 111, and the heater 300 is arranged in the first installation channel 150 to heat the heating member 100 through the heater 300.

[0073] In addition, the heater 300 can be any one or a combination of two or more of a heating rod, a heating wire, or a heating plate, and can be specifically set according to actual situations.

[0074] In this embodiment, the heater 300 is a heating rod. By arranging the heater 300 in the first installation channel 150, the contact area between the heating rod and the heating member 100 is increased, the heat conduction speed between the heating rod and the heating member 100 is improved, and thus the heating efficiency of the heating member 100 is improved.

[0075] Specifically, the flow guiding member 200 and the nozzle head 400 are respectively arranged on two opposite sides of the main body 110. The flow guiding member 200 is communicated with the inlet end 1111 to drain the consumables to the inlet end 1111 through the flow guiding member 200, and enable the consumables flowing through the flow guiding member 200 to enter the diversion channel 111 through the inlet end 1111, so as to facilitate heating the consumables. By communicating the nozzle head 400 with the outlet end 1112, the softened and melted consumables enter the nozzle head 400 from the outlet end 1112 and are ejected through the nozzle head 400 to realize 3D printing.

[0076] As Figure 5 and Figure 7 shown, in some embodiments of the present application, the flow guiding member 200 includes a heat dissipation tube 210, a throat tube 220, and a connecting member 230.

[0077] Wherein, the connecting member 230 is a through connection structure. The heat dissipation tube 210 and the connecting member 230 are respectively sleeved at both ends of the throat tube 220, and there is a gap between the heat dissipation tube 210 and the connecting member 230 to prevent the heat generated by the connecting member 230 from being directly conducted to the heat dissipation tube 210.

[0078] In addition, connect the connecting member 230 to the heating member 100. It should be noted that the connection method between the connecting member 230 and the heating member 100 includes any one of snap connection, bolt connection, and threaded connection, which can be specifically set according to the actual situation.

[0079] In this embodiment, the heat dissipation tube 210 is used to dissipate heat from the throat tube 220, ensuring that the consumables in the throat tube 220 are not in a softened state, so as to prevent the heat generated by the heating member 100 from being transferred to the end of the throat tube 220 away from the heating member 100, and prevent the consumables from clogging the throat tube 220, thereby ensuring the stability and smoothness of the flow of the consumables in the throat tube 220.

[0080] As Figure 1 and Figure 5 shown, in some embodiments of the present application, the heating member 100 is provided with a second installation channel 160, and there is a gap between the second installation channel 160 and the diversion channel 111. In addition, the nozzle assembly further includes a temperature sensor 500, and the temperature sensor 500 is arranged in the second installation channel 160 to detect the temperature change of the heating member 100 through the temperature sensor 500, so as to adjust the temperature of the heating member 100 according to the detected data, thereby adjusting the melting speed of the consumables.

[0081] In addition, some embodiments of the present application further provide a 3D printer, including the heating member 100 described in any one of the above embodiments or the nozzle assembly described in any one of the above embodiments.

[0082] The 3D printer has the structure of the heating member 100 described in any one of the above embodiments and the beneficial effects produced thereby; or the 3D printer has the structure of the nozzle assembly described in any one of the above embodiments and the beneficial effects produced thereby, which will not be elaborated here one by one.

[0083] In all the examples shown and described here, any specific value should be construed as merely exemplary, not as a limitation. Therefore, other examples of the exemplary embodiments may have different values.

[0084] It should be noted that: similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0085] The above-described embodiments only represent several implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the present application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application.

Claims

1. A heating element, characterized in that, Comprising: A body provided with a diversion channel penetrating through the body, the diversion channel having an inlet end and an outlet end; A shunt member received in the diversion channel and spaced from the channel wall of the diversion channel to form a clearance channel; At least one support member received in the clearance channel, one side of the support member being connected to the channel wall of the clearance channel and the other end of the support member being connected to the side wall of the shunt member; The shunt member is provided with a diversion channel having a feed inlet and at least one discharge outlet, the feed inlet being provided on one side of the shunt member close to the inlet end, the discharge outlet being close to the outlet end and communicating with the clearance channel.

2. The heating element according to claim 1, wherein The feed inlet and the discharge outlet define at least one lateral flow channel, one end of the lateral flow channel communicating with the feed inlet and the other end of the lateral flow channel communicating with the discharge outlet.

3. The heating element according to claim 2, wherein The feed inlet is provided with a diversion groove, and one end of the lateral flow channel located at the feed inlet can communicate with the feed inlet through the diversion groove.

4. The heating element according to claim 3, wherein, The caliber of the diversion groove is tapered from the side close to the inlet end to the side close to the outlet end.

5. The heating element according to claim 2, wherein, The caliber of the discharge outlet is larger than the inner diameter of the lateral flow channel, and there is a gap between the discharge outlet and the support member.

6. The heating element according to any one of claims 2 to 5, characterized in that, The diversion direction of each lateral flow channel forms an angle α with the axis of the shunt member, where the value range of α is 10° ≤ α ≤ 45°.

7. The heating element according to claim 1, wherein There are two support members, and the two support members are respectively arranged on two opposite sides of the shunt member; There are two discharge outlets, and the two discharge outlets are respectively arranged on two opposite sides of the shunt member, and the discharge outlets and the support members are arranged at equal intervals along the outer periphery of the shunt member.

8. A nozzle assembly, characterized in that, Comprising a drainage member, a heater, a nozzle, and the heating member according to any one of claims 1 to 7; The heating member is provided with a first installation channel, and the heater is arranged in the first installation channel; The drainage member and the nozzle are respectively arranged on two opposite sides of the body, the nozzle communicates with the outlet end, and the drainage member communicates with the inlet end.

9. The nozzle assembly according to claim 8, wherein The drainage member includes a heat dissipation pipe, a throat pipe, and a connecting member; The heat dissipation pipe and the connecting member are respectively sleeved on both ends of the throat pipe, and the connecting member is connected to the heating member.

10. The nozzle assembly according to claim 9, characterized in that, The heating member is provided with a second installation channel, and the nozzle assembly further includes a temperature sensor, and the temperature sensor is arranged in the second installation channel.

11. A 3D printer, characterized in that, Comprising the heating member according to any one of claims 1 to 7 or the nozzle assembly according to any one of claims 8 to 10.

Images