Heating device, melting assembly and 3D printer

Abstract

The utility model relates to a heating device, a melting assembly and a 3D printer. The heating device comprises a heating device body, a consumable inlet, a consumable channel and a consumable outlet are formed in the heating device body, the consumable channel extends in the longitudinal direction, and the consumable channel is communicated between the consumable inlet and the consumable outlet; the heating device comprises a heating device body, the heating device body comprises a plurality of heat conduction single bodies, groove structures are arranged on the binding faces of the heat conduction single bodies, the binding faces of every two adjacent heat conduction single bodies are bound so that the multiple heat conduction single bodies can be combined to form the heating device body, and the multiple groove structures are jointly combined to form a consumable inlet, a consumable channel and a consumable outlet. The heating device body is formed by combining the multiple heat conduction single bodies, the groove structures are arranged on the binding faces of the heat conduction single bodies, the multiple groove structures are jointly combined to form the consumable inlet, the consumable channel and the consumable outlet, and therefore the consumable channel with the complex structure can be formed in the heating device body.

Description

Technical Field

[0001] The present application relates to the technical field of 3D printers, and in particular to a heating device, a melting component and a 3D printer. Background Art

[0002] The heating device of an FDM (Fused Deposition Modeling) 3D printer is used to melt solid filamentary materials into a molten state. Specifically, the solid filamentary materials enter the heating device under the action of an external force, where they are heated and melted, and then extruded from the nozzle outlet, gradually accumulating layer by layer to print the 3D model.

[0003] In the related art, the consumable channel of the heating device is usually designed to be in a straight line shape. For the consumable channel in a straight line shape, a drilling device can be used to drill a hole in the heating device body to form a consumable channel in a straight line shape. However, for the consumable channel with a special shape (for example, a curved shape or an irregular shape), there is a problem that it cannot be processed. Utility Model Content

[0004] Based on this, it is necessary to provide a heating device to address the problem of high difficulty in processing consumable channels.

[0005] A heating device includes a heat-conducting body, which is formed with a consumables inlet, a consumables channel and a consumables outlet, and the consumables channel is connected between the consumables inlet and the consumables outlet; the heat-conducting body includes at least two heat-conducting monomers, and the heat-conducting monomers are provided with a bonding surface, and the bonding surface is provided with a groove structure. At least two heat-conducting monomers are bonded through the bonding surface, so that the at least two heat-conducting monomers are combined to form the heating device body, wherein the at least two groove structures are combined to form the consumables inlet, the consumables channel and the consumables outlet.

[0006] In one embodiment, the heat conducting unit is provided with a diverter portion, the diverter portion is provided with at least one separator, and the end of the separator facing the consumable inlet is provided with a dividing angle.

[0007] In one embodiment, the groove structure includes a preheating channel, and a stripping channel is provided in the preheating channel.

[0008] In one embodiment, the groove structure includes a melting flow channel, and at least two melting flow channels and at least two preheating flow channels are combined to form a consumable channel of the heat-conducting body.

[0009] In one embodiment, the melt flow channel includes a first melt flow channel, which is disposed between the separator and the peripheral wall of the heat-conducting unit; and the first melt flow channel is connected to the preheating flow channel.

[0010] In one embodiment, the melt flow channel includes a second melt flow channel, which is disposed between adjacent separation elements; and the second melt flow channel is connected to the preheating flow channel.

[0011] In one embodiment, the groove structure further includes a first groove body and a second groove body, at least two first groove bodies form a consumable material inlet, and at least two second groove bodies form a consumable material outlet.

[0012] In one embodiment, the heating device further includes: a sealing ring made of a heat-conducting material, wherein an assembly through hole is formed in the sealing ring, the heat-conducting body is assembled in the assembly through hole, and the heat-conducting body is interference-fitted with the inner circumferential wall of the assembly through hole.

[0013] The above-mentioned heating device is configured such that the heating device body is composed of a plurality of heat-conducting monomers, and a groove structure is formed on the bonding surface of the heat-conducting monomer. The plurality of groove structures are combined to form a consumable inlet, a consumable channel and a consumable outlet, thereby forming a consumable channel with a complex structure in the heating device body.

[0014] The present application further discloses a melting assembly, which includes a throat assembly, a nozzle assembly, and the heating device of some of the above embodiments. The throat assembly is arranged at one end near the consumable inlet, and the nozzle of the nozzle assembly is arranged at one end near the consumable outlet.

[0015] The present application further discloses a 3D printer, which includes the heating device according to some of the above embodiments, or the 3D printer includes the melting component according to some of the above embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 1 is a front view of a melting assembly according to an embodiment of the present application.

[0017] Figure 2 for Figure 1 Cross-section along AA direction.

[0018] Figure 3 for Figure 1 Cross-section along the BB direction.

[0019] Figure 4 for Figure 1 Cross-sectional view along CC direction.

[0020] Figure 5 1 is an exploded view of a heating device according to an embodiment of the present application.

[0021] Figure 6 It is a front view of a melting assembly according to another embodiment of the present application.

[0022] Figure 7 for Figure 6 Cross-section along AA direction.

[0023] Figure 8 for Figure 6 Cross-section along the BB direction.

[0024] Figure 9 for Figure 6 Cross-sectional view along CC direction.

[0025] Figure Number:

[0026] 100. Heating device; 1. Heat conducting body;

[0027] 10. Thermally conductive monomer; 10a. First thermally conductive monomer; 10b. Second thermally conductive monomer;

[0028] 11. Fitting surface; 12. Groove structure;

[0029] 12a, preheating channel; 12b, stripping channel; 12c, first melting channel; 12d, second melting channel; 12e, first tank body; 12f, second tank body;

[0030] 13. Diverter; 13a. First diverter; 13b. Second diverter;

[0031] 14. Separation piece; 140. Splitting angle;

[0032] 15. Peripheral wall;

[0033] 16. Sealing ring;

[0034] 17. Heating element;

[0035] 200, molten components;

[0036] 2. Throat assembly; 21. First connecting piece; 22. Throat; 23. Second connecting piece;

[0037] 3. Nozzle. DETAILED DESCRIPTION

[0038] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0039] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0040] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0041] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0042] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0043] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only embodiment.

[0044] See Figure 1 and Figure 6 As shown, the melting assembly 200 equipped with the heating device 100 according to some embodiments of the present application includes a throat assembly 2, a nozzle assembly and the heating device 100. The throat assembly 2 is used to receive solid filamentary consumables so that the solid filamentary consumables enter the heating device 100 for heating and melting. After the solid filamentary consumables are heated and melted, they are extruded from the nozzle 3 outlet. It should be noted that in the following content, solid filamentary consumables are referred to as consumables. In addition, the melting assembly 200 equipped with the heating device 100 according to some examples of the present application can be applied to any industry that requires the melting assembly 200, such as 3D printing, spinning industry, thermal spraying, etc.

[0045] Combine Figures 1 to 9 As shown, a heating device 100 according to some embodiments of the present application includes a heat-conducting body 1, which includes at least two heat-conducting units 10. The heat-conducting body 1 is formed with a consumables inlet, a consumables channel, and a consumables outlet, and the consumables channel is connected between the consumables inlet and the consumables outlet. The heat-conducting body 1 includes at least two heat-conducting units 10, and the heat-conducting units 10 are provided with a bonding surface 11, and the bonding surface 11 is provided with a groove structure 12. At least two heat-conducting units 10 are bonded together through the bonding surface 11, so that the at least two heat-conducting units 10 are combined to form the heat-conducting body 1, wherein the at least two groove structures 12 are combined to form the consumables inlet, consumables channel, and consumables outlet.

[0046] A groove structure 12 is formed on the bonding surface 11 of the heat-conducting monomer 10, and the bonding surfaces 11 of two adjacent heat-conducting monomers 10 are bonded so that multiple heat-conducting monomers 10 are combined to form the heat-conducting body 1, and the groove structures 12 respectively located in the multiple heat-conducting monomers 10 are combined together to form the consumables inlet, consumables channel and consumables outlet.

[0047] Since the groove structure 12 is processed on the bonding surface 11 of the heat-conducting monomer 10 and then a plurality of heat-conducting monomers 10 are combined to form the heat-conducting body 1 , a consumable channel with a complex structure can be formed in the heat-conducting body 1 .

[0048] For example, in some embodiments of the present application, the heat conducting body 1 has vertical longitudinal and transverse directions, combined with Figures 1 to 5 ,as well as Figures 6 to 9 As shown, the heat conducting body 1 is shaped like a cylinder. In the heat conducting body 1, the longitudinal direction of the heat conducting body 1 is the axial direction of the heat conducting body 1, and the transverse direction of the heat conducting body 1 is the radial direction of the heat conducting body 1. Figure 5 As shown, in the process of combining multiple heat-conducting monomers 10 to form the heat-conducting body 1, the multiple heat-conducting monomers 10 move laterally along the heat-conducting body 1 so that the bonding surfaces 11 of two adjacent heat-conducting monomers 10 are bonded, thereby achieving the effect of combining multiple heat-conducting monomers 10 to form the heat-conducting body 1.

[0049] It should be noted that in some embodiments of the present application, the shape of the heat-conducting body 1 is a cylinder, but the present application is not limited to this. The shape of the heat-conducting body 1 can be specifically set according to needs. For example, in other embodiments, the shape of the heat-conducting body 1 is a quadrangular prism. In the heat-conducting body 1 in the shape of a quadrangular prism, the longitudinal direction of the heat-conducting body 1 is the height direction of the heat-conducting body 1, and the transverse direction of the heat-conducting body 1 is the length direction or width direction of the heat-conducting body 1.

[0050] See Figure 4 、 Figure 5 、 Figure 9 As shown, in some embodiments of the present application, the number of thermally conductive monomers 10 is configured as two, and the two thermally conductive monomers 10 are cylindrical with a semicircular cross-section, so that when the bonding surfaces 11 of the two thermally conductive monomers 10 are bonded to each other, they are combined to form a cylindrical thermally conductive body 1. It should be noted that in some embodiments of the present application, the number of thermally conductive monomers 10 is configured as two as an example, but the present application is not limited to this. The number of thermally conductive monomers 10 can be specifically set according to the shape of the consumable channel. This not only ensures that when multiple thermally conductive monomers 10 are combined to form the thermally conductive body 1, the groove structures 12 respectively located in the thermally conductive monomers 10 can be combined together to form the consumable channel, but also facilitates the processing of the groove structure 12 on the bonding surface 11 of each thermally conductive monomer 10. For example, the number of thermally conductive monomers 10 can also be configured as three or four.

[0051] It should also be noted that in some embodiments of the present application, the heat-conducting body 1 is composed of at least two heat-conducting monomers 10 that are equally divided in the longitudinal direction of the heat device body 1. This can also be understood as the structures of the multiple heat-conducting monomers 10 being the same. However, the present application is not limited thereto. In other embodiments, the heat-conducting body 1 can be composed of at least two heat-conducting monomers 10 that are not equally divided in the longitudinal direction of the heat device body 1. This can also be understood as the structures of at least two heat-conducting monomers 10 being different. For example, taking the cross-sectional shape of the heat-conducting body 1 as an example, the heat-conducting body 1 can be composed of three heat-conducting monomers 10, wherein the cross-sectional shapes of two heat-conducting monomers 10 are similar to those of a quartered sector, and the cross-sectional shape of the other heat-conducting monomer 10 is similar to that of a halfed sector.

[0052] Therefore, by setting the heat-conducting body 1 to be composed of a plurality of heat-conducting monomers 10, and processing the bonding surface 11 of the heat-conducting monomer 10 to form a groove structure 12, the plurality of groove structures 12 are combined to form a consumable inlet, a consumable channel and a consumable outlet, so that a consumable channel with a complex structure can be formed in the heat-conducting body 1.

[0053] In some embodiments of the present application, see Figures 1 to 3 ,as well as Figures 6 to 8 As shown, the melting assembly 200 may also include a throat assembly 2 and a nozzle assembly, wherein the throat assembly 2 may include a first connecting member 21, a throat 22 and a second connecting member 23. Along the length direction of the throat 22, the first connecting member 21 and the second connecting member 23 are respectively assembled at both ends of the throat 22, and the first connecting member 21 is suitable for being assembled with the consumables inlet of the heat-conducting body 1, and the second connecting member 23 is suitable for being assembled with the feeding mechanism of the printer. In addition, the nozzle assembly has a nozzle 3, which is suitable for being assembled with the consumables outlet of the heat-conducting body 1.

[0054] During operation of the 3D printer, a feeding mechanism (not shown) drives the filament to move, allowing the filament to enter the filament channel through the throat 22, thereby achieving the effect of the feeding mechanism transporting the filament to the interior of the heating device 100 for heating and melting. It should also be noted that because the feeding mechanism can continuously transport the filament to the heating device 100, the filament continuously moves along the filament channel from the filament inlet to the filament outlet, thereby squeezing the melted filament out of the nozzle 3 outlet. The melted filament accumulates layer by layer to print the model.

[0055] In some embodiments of the present application, welding can be used to connect and combine at least two independent heat-conducting units 10 to form the heat-conducting body 1. For example, in the process of combining at least two heat-conducting units 10 into the heat-conducting body 1, the bonding surfaces 11 of the two heat-conducting units 10 are bonded to each other, and then welding is performed along the seam between the two adjacent heat-conducting units 10 (the seam between the two heat-conducting units 10 is the connecting gap formed on the outer surface of the heat-conducting units 10 by the bonding area of ​​the bonding surfaces 11 of the two heat-conducting units 10). The two adjacent heat-conducting units 10 are welded together into one, thereby achieving the effect of connecting and combining multiple independent heat-conducting units 10 into the heat-conducting body 1 by welding.

[0056] It should also be noted that during the welding process of two thermally conductive units 10, external force is applied to tightly align the bonding surfaces 11 of the two adjacent thermally conductive units 10, thereby reducing the gap between the two adjacent thermally conductive units 10 and preventing leakage of the molten consumable material. Alternatively, the heating device 100 may further include a sealing gasket (not shown) disposed between the two adjacent thermally conductive units 10 to reduce the risk of leakage of the molten consumable material.

[0057] In some embodiments of the present application, see Figures 1 to 4 ,as well as Figures 6 to 9 As shown, the heating device 100 also includes a heating element 17, which is arranged on the outside of the heat-conducting body 1. When the heating element 17 is working, it generates heat to heat the heat-conducting body 1. Since the temperature of the heat-conducting body 1 increases after being heated by the heating element 17, the consumables in the consumable channel are heated and melted.

[0058] In some embodiments of the present application, the heating element 17 can directly contact the outer surface of the heat-conducting body 1. It can also be understood that the heating element 17 is fixedly assembled on the outer surface of the heat-conducting body 1 to generate heat when the heating element 17 is working to heat the heat-conducting body 1.

[0059] In some embodiments of the present application, see Figures 2 to 4 ,as well as Figures 7 to 9 As shown, the heating device 100 may further include a sealing ring 16, which is made of a heat-conducting material so that the sealing ring 16 has heat-conducting properties. An assembly through-hole is formed in the sealing ring 16, and the heat-conducting body 1 is assembled in the assembly through-hole, and the heat-conducting body 1 is interference-fitted with the inner circumferential wall 15 of the assembly through-hole, so that the sealing ring 16 applies an extrusion force to the heat-conducting monomer 10, so that the fitting surfaces 11 of two adjacent heat-conducting monomers 10 are tightly fitted. The sealing ring 16 can fix multiple heat-conducting monomers 10 of the heat-conducting body 1 in the assembly through-hole, and at the same time achieve the purpose of reducing the gap between two adjacent heat-conducting monomers 10, thereby avoiding leakage of molten consumables.

[0060] Also, see Figure 2 As shown, the heating element 17 is fixedly assembled on the outer surface of the sealing ring 16 so that when the heating element 17 is working, heat is generated to indirectly heat the heat-conducting body 1 through the sealing ring 16 .

[0061] For example, see Figures 2 to 4 ,as well as Figures 7 to 9 As shown, the sealing ring 16 can be made of a thermally conductive material with excellent thermal conductivity such as copper or silver, so that the sealing ring 16 has good thermal conductivity and can effectively transfer the heat generated by the heating element 17 to the thermal conductive body 1, thereby heating the consumables in the consumable channel to a molten state.

[0062] See Figure 4 and Figure 9 As shown, since the cross-section of the heat-conducting body 1 is circular, the cross-section of the assembly through-hole is correspondingly circular, so that the heat-conducting body 1 composed of multiple heat-conducting monomers 10 can be assembled on the inner peripheral wall 15 of the assembly through-hole with interference fit, so that in the transverse direction of the heat-conducting body 1, the sealing ring 16 generates an extrusion force on the multiple heat-conducting monomers 10, so that the fitting surfaces 11 of two adjacent heat-conducting monomers 10 can be tightly fitted, so as to achieve the purpose of reducing the gap between the two adjacent heat-conducting monomers 10 and avoiding leakage of molten consumables.

[0063] It should be noted that in some of the above embodiments, the cross-section of the heat-conducting body 1 is circular, and the cross-section of the assembly through hole is a corresponding circular shape, but the present application is not limited to this. The cross-section shape of the assembly through hole is specifically set according to the cross-section shape of the heat-conducting body 1, and it is sufficient to meet the requirements that the heat-conducting body 1 is assembled in the assembly through hole and the heat-conducting body 1 and the inner peripheral wall 15 of the assembly through hole are interference fit.

[0064] In some embodiments of the present application, see Figure 6 As shown, the thermally conductive monomer 10 is an integrally formed part. For example, a raw blank is selected to make the thermally conductive monomer 10. The raw blank can be a metal block with excellent thermal conductivity, such as a copper block or a silver block. The thermally conductive monomer 10 is formed by machining in the raw blank. This ensures that the material at any position of the thermally conductive monomer 10 is the same material, ensuring the overall thermal conductivity efficiency of the thermally conductive monomer 10, and further ensuring the overall thermal conductivity efficiency of the thermally conductive body 1. It should be noted that since the heating element 17 of the heating device 100 is arranged on the outside of the thermally conductive body 1, the heat generated by the heating element 17 is transferred from the outside to the inside in the transverse direction of the thermally conductive body 1. Since the thermally conductive monomer 10 is an integrally formed part, the thermal conductivity efficiency inside the thermally conductive monomer 10 is the same as that outside. This can avoid the temperature outside the thermally conductive monomer 10 being higher than the temperature inside the thermally conductive monomer 10, thereby ensuring the melting effect of the consumables located in the consumable channel.

[0065] It should be noted that, in some of the above embodiments, the thermal conductive unit 10 is described as an integrally formed part, but the present application is not limited thereto. The thermal conductive unit 10 may also be formed by combining multiple parts.

[0066] In some embodiments of the present application, see Figure 2 、 Figure 3 and Figure 5 As shown, the heat conducting unit 10 is provided with a diverter 13, the diverter 13 is provided with at least one separator 14, and the end of the separator 14 facing the consumable inlet is provided with a dividing angle 140. In this way, when the consumable moves from the consumable inlet to the consumable outlet along the consumable channel,

[0067] The dividing angle 140 is used to divide the molten consumables so that the consumables can be divided into multiple components. Since the dividing angle 140 divides the consumables into multiple components, the central heat conduction distance of the consumables is further reduced, thereby further improving the heating efficiency of the heat-conducting body 1 on the consumables.

[0068] See Figure 2 、 Figure 3 、 Figure 5 、 Figure 7 and Figure 8 As shown, in some embodiments of the present application, the groove structure 10 further includes a first groove body 12e and a second groove body 12f, at least two first groove bodies 12e form a consumable material inlet, and at least two second groove bodies 12f form a consumable material outlet.

[0069] For example, see Figure 2 、 Figure 3 and Figure 5 As shown, each heat-conducting monomer 10 is provided with a first groove body 12e and a second groove body 12f. When the two heat-conducting monomers 10 are combined to form the heat-conducting body 1, the first groove bodies 12e respectively located in the two heat-conducting monomers 10 are combined to form the consumable material inlet, and the second groove bodies 12f respectively located in the two heat-conducting monomers 10 are combined to form the consumable material outlet.

[0070] See Figure 2 、 Figure 3 、 Figure 5 、 Figure 7 and Figure 8 As shown, in some embodiments of the present application, the groove structure 10 includes a preheating channel 12a, within which a stripping channel 12b is disposed. At least two preheating channels 12a combine to form the preheating channel of the heat conductive body 1, which is located at one end near the consumables inlet. It can also be understood that, because the stripping channel 12b is disposed within the preheating channel 12a, at least two stripping channels 12b combine to form the stripping channel of the heat conductive body 1.

[0071] For example, see Figure 2 、 Figure 3 and Figure 5As shown, each heat-conducting unit 10 is provided with a preheating channel 12a. When two heat-conducting units 10 are combined to form the heat-conducting body 1, the two preheating channels 12a located on the two heat-conducting units 10 are combined to form the preheating channel of the heat-conducting body 1. The end of the preheating channel 12a away from the second groove 12f is connected to the first groove 12e, so that in the longitudinal direction of the heat-conducting body 1, the preheating channel is located at the end near the consumable inlet. The preheating channel is connected to the consumable inlet, and the longitudinal center axis of the preheating channel coincides with the longitudinal center axis of the consumable inlet, so that the consumable can accurately enter the preheating channel under the guidance of the throat assembly 2. As the consumable extends from the consumable inlet into the preheating channel, the consumable softens from the outside to the inside. Due to the low thermal conductivity of the consumable, the consumable absorbs little heat while in the preheating channel, which softens only the outer ring of the consumable, while the inner core may remain hard.

[0072] By providing a stripping channel 12b in the preheating channel 12a, a stripping channel is formed in the preheating channel. The cross-sectional dimensions of the stripping channel are smaller than the cross-sectional dimensions of the preheating channel, and the cross-sectional dimensions of the stripping channel are configured to be smaller than the cross-sectional dimensions of the consumable. In this way, as the consumable moves along the preheating channel, the heat-conducting body 1 is used to strip the melted portion of the consumable from the unmelted portion of the consumable. It can be understood that the unmelted portion of the consumable is the hard core of the consumable. It should be noted that as the consumable moves along the preheating channel, the hard core of the consumable moves into the stripping channel.

[0073] It should also be noted that according to the thermodynamic formula for heat conduction, the amount of heat received by the filament is Q=kΔT / R=ΔT*λ*S / L, where R= / (λ*S); Q: heat (w), ΔT: temperature difference (k); R: thermal resistance (k / w), L: filament thickness (m); λ: thermal conductivity [w / (mK]); S: area (m2). From the above formula, it can be seen that the larger the heated area S of the filament and the shorter the central heat conduction distance, the faster the heating and melting speed will be.

[0074] Therefore, by forming a peeling channel in the preheating channel, the melted part of the outside of the consumable is peeled off from the unmelted part inside the consumable, thereby achieving the purpose of reducing the central heat conduction distance of the consumable, and then increasing the melting speed of the consumable, thereby achieving the effect of improving the heating efficiency of the consumable by the heat-conducting body 1.

[0075] See Figure 2 、 Figure 3 、 Figure 5 、 Figure 7 and Figure 8As shown, in some embodiments of the present application, the groove structure 10 includes a melt flow channel, and at least two melt flow channels and at least two preheating flow channels 12a are combined to form a consumable channel of the heat-conducting body 1. It should be noted that along the extension direction of the melt flow channel, one end of the melt flow channel is connected to the preheating flow channel 12, and the other end of the melt flow channel is connected to the second groove body 12f.

[0076] See Figure 2 、 Figure 3 、 Figure 5 、 Figure 7 and Figure 8 As shown, in some embodiments of the present application, the melt flow channel includes a first melt flow channel 12c, which is disposed between the separator 14 and the peripheral wall 15 of the thermally conductive unit 10. The first melt flow channel 12c is connected to the preheating flow channel 12a, and the first melt flow channel 12c is also connected to the second trough 12f. That is, the first melt flow channel 12c connects the preheating flow channel 12a and the second trough 12f. This allows the consumables to enter the first melt flow channel 12c for further melting after passing through the preheating channel.

[0077] For example, see Figure 2 、 Figure 3 、 Figure 5 、 Figure 7 and Figure 8 As shown, the diversion portion 13 of each heat-conducting monomer 10 includes two separators 14, and each separator 14 forms a first melt flow channel 12c with the peripheral wall 15 of the heat-conducting monomer 10, that is, two first melt flow channels 12c are formed in each heat-conducting monomer 10. It should be noted that in the above embodiment, the diversion portion 13 of each heat-conducting monomer 10 includes two separators 14, and each heat-conducting monomer 10 forms a first melt flow channel 12c with the peripheral wall 15 of the heat-conducting monomer 10 as an example for description, but the present application is not limited to this. For example, the diversion portion 13 of each heat-conducting monomer 10 is a separator 14, and one separator 14 forms two first melt flow channels 12c with the peripheral wall 15 of the heat-conducting monomer 10, or the diversion portion 13 of each heat-conducting monomer 10 is a separator 14, and one separator 14 forms a first melt flow channel 12c with the peripheral wall 15 of the heat-conducting monomer 10.

[0078] See Figure 2 、 Figure 3 、 Figure 5 、 Figure 7 and Figure 8As shown, in some embodiments of the present application, the melt flow channel includes a second melt flow channel 12d, which is disposed between adjacent separators 14. In other words, the diverter 13 includes at least two separators 14, and a second melt flow channel 12d is formed between two adjacent separators 14. The second melt flow channel 12d is connected to the preheating flow channel 12a, and the second melt flow channel 12d is also connected to the second trough 12f. That is, the second melt flow channel 12d connects the preheating flow channel 12a and the second trough 12f. This allows the consumables to enter the second melt flow channel 12d for further melting after passing through the preheating channel.

[0079] For example, see Figure 2 、 Figure 3 、 Figure 5 、 Figure 7 and Figure 8 As shown, there are two heat-conducting monomers 10, namely a first heat-conducting monomer 10a and a second heat-conducting monomer 10b. The bonding surface 11 of the first heat-conducting monomer 10a is bonded to the bonding surface 11 of the second heat-conducting monomer 10b, and the bonding surface 11 of the first heat-conducting monomer 10a and the bonding surface 11 of the second heat-conducting monomer 10b are both provided with a groove structure 12.

[0080] The diverter portion 13 of the first heat conducting unit 10 a is a first diverter portion 13 a , and the diverter portion 13 of the second heat conducting unit 10 b is a second diverter portion 13 b . Both the first diverter portion 13 a and the second diverter portion 13 b include two separators 14 .

[0081] See Figures 2 to 5 As shown, in one embodiment, the first diverter portion 13a and the second diverter portion 13b are mirror-symmetrical based on the bonding surface 11. It can be understood that the first diverter portion 13a and the second diverter portion 13b are mirror-symmetrical based on the bonding surface 11 of the first heat-conducting monomer 10a, or the first diverter portion 13a and the second diverter portion 13b are mirror-symmetrical based on the bonding surface 11 of the second heat-conducting monomer 10b. For more details, see Figure 2 As shown, the second melting channel 12d in the first heat conducting monomer 10a is in an S-shape, and referring to FIG. Figure 3 As shown, the shape of the second melt flow channel 12d in the second heat-conducting monomer 10b is a mirror image of an "S" shape. When the first heat-conducting monomer 10a and the second heat-conducting monomer 10b are combined to form the heat-conducting body 1, in the lateral direction of the heating device 100 body 1, the orthographic projection of the second melt flow channel 12d in the first heat-conducting monomer 10a and the orthographic projection of the second melt flow channel 12d in the second heat-conducting monomer 10b on the same plane form an "S" shape.

[0082] See Figures 7 and 8As shown, in another embodiment, the first diverter portion 13a and the second diverter portion 13b have the same structure, which can also be understood as the two separators 14 in the first diverter portion 13a and the two separators 14 in the second diverter portion 13b having the same structure. Figure 7 As shown, the second melting channel 12d in the first heat conducting monomer 10a is in an S-shape, and referring to FIG. Figure 8 As shown, the second melt flow channel 12d in the first heat-conducting monomer 10a is shaped like an "S." When the first heat-conducting monomer 10a and the second heat-conducting monomer 10b are combined to form the heat-conducting body 1, in the lateral direction of the heating device 100 body 1, the orthographic projection of the second melt flow channel 12d in the first heat-conducting monomer 10a and the orthographic projection of the second melt flow channel 12d in the second heat-conducting monomer 10b on the same plane form an "8" shape.

[0083] See Figures 2 to 4 ,as well as Figure 7 and Figure 8 As shown, in some embodiments of the present application, the end of the separator 14 facing the consumable inlet is provided with a splitting angle 140. Thus, as the consumable enters the first melt flow channel 12c and / or the second melt flow channel 12d from the preheating channel, the splitting angle 140 is used to split the molten consumable so that the consumable can be separated into multiple components, which can then enter the corresponding melt flow channels (i.e., the first melt flow channel 12c and / or the second melt flow channel 12d) respectively. Because the splitting angle 140 divides the consumable into multiple components, the central heat conduction distance of the consumable is further reduced, thereby further improving the heating efficiency of the heat-conducting body 1 on the consumable.

[0084] See Figure 2 、 Figure 3 、 Figure 5 、 Figure 7 and Figure 8 As shown, in some embodiments of the present application, at least two first melting channels 12c and at least two preheating channels 12a together form a consumable channel, or at least two second melting channels 12d and at least two preheating channels 12a together form a consumable channel, or at least two first melting channels 12c, at least two second melting channels 12d and at least two preheating channels 12a together form a consumable channel.

[0085] For example, combined Figure 2 、 Figure 3 、 Figure 5 、 Figure 7 and Figure 8As shown, in some embodiments, the heat-conducting body 1 is composed of two heat-conducting monomers 10, wherein each heat-conducting monomer 10 has a preheating flow channel 12a, two first melting flow channels 12c and one second melting flow channel 12d. Thus, the consumable channel of the heat-conducting body 1 is formed by a combination of two preheating flow channels 12a, four first melting flow channels 12c and two second melting flow channels 12d.

[0086] See Figure 1 and Figure 2 As shown, according to the melting assembly 200 of some embodiments of the present application, the melting assembly 200 includes the heating device 100, the throat assembly 2 and the nozzle assembly in some of the above-mentioned embodiments. The throat assembly 2 is arranged at one end close to the consumable inlet, and the nozzle 3 of the nozzle assembly is arranged at one end close to the consumable outlet. The consumable enters the consumable inlet through the throat assembly 2, and the consumable heated and melted by the heating device 100 enters the nozzle 3 through the consumable outlet, so that the molten consumable is extruded by the nozzle 3. Since the melting assembly 200 according to the present application is equipped with the heating device 100, a consumable channel with a complex structure can be designed in the heating device 100. In this way, the structural characteristics of the consumable channel are utilized to improve the melting efficiency of the consumable by the heating device 100, so as to improve the melting efficiency of the consumable by the melting assembly 200.

[0087] The present application also discloses a 3D printer, which includes the melting component 200 in some of the above embodiments. According to the 3D printer of the present application, since the melting component 200 has a high melting efficiency for consumables, it can achieve a high-speed printing function.

[0088] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0089] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A heating device, characterized in that: include: A heat-conducting body, wherein a consumable material inlet, a consumable material channel, and a consumable material outlet are formed inside the heat-conducting body, and the consumable material channel communicates with the consumable material inlet and the consumable material outlet; The heat-conducting body includes at least two heat-conducting monomers, each of which is provided with a bonding surface, and each of which is provided with a groove structure. At least two of the heat-conducting monomers are bonded together through the bonding surface, so that at least two of the heat-conducting monomers are combined to form the heating device body, wherein at least two of the groove structures are combined to form the consumable inlet, the consumable channel and the consumable outlet.

2. The heating device according to claim 1, characterized in that The heat-conducting unit is provided with a diverter portion, the diverter portion is provided with at least one separator, and the end of the separator facing the consumables inlet is provided with a dividing angle.

3. The heating device according to claim 2, characterized in that The groove structure includes a preheating flow channel, and a stripping flow channel is provided in the preheating flow channel.

4. The heating device according to claim 3, characterized in that The groove structure includes a melting flow channel, and at least two of the melting flow channels and at least two of the preheating flow channels are combined to form the consumable channel of the heat-conducting body.

5. The heating device according to claim 4, characterized in that The molten flow channel includes a first molten flow channel, which is arranged between the separator and the peripheral wall of the heat-conducting unit; the first molten flow channel is communicated with the preheating flow channel.

6. The heating device according to claim 4 or 5, characterized in that: The molten runner includes a second molten runner, which is arranged between adjacent separation elements; and the second molten runner is communicated with the preheating runner.

7. The heating device according to claim 1, characterized in that The groove structure further includes a first groove body and a second groove body, at least two of the first groove bodies form the consumable material inlet, and at least two of the second groove bodies form the consumable material outlet.

8. The heating device according to claim 1, characterized in that Also includes: The sealing ring is made of a heat-conducting material. An assembly through hole is formed in the sealing ring. The heat-conducting body is assembled in the assembly through hole, and the heat-conducting body is interference-fitted with the inner peripheral wall of the assembly through hole.

9. A melting component, characterized in that include: Throat assembly, nozzle assembly and The heating device according to any one of claims 1 to 8; the throat assembly is arranged at an end close to the consumable inlet, and the nozzle of the nozzle assembly is arranged at an end close to the consumable outlet.

10. A 3D printer, characterized in that: The heating device comprises the heating device according to any one of claims 1 to 8, or the melting assembly according to claim 9.

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