3D printing consumable heating device, nozzle assembly and 3D printer
By using thermally conductive particles and limiting structures in the heating device of 3D printing filaments, the problem of low heating efficiency of filaments is solved, and uniform and rapid heating of filaments is achieved, ensuring the continuity of 3D printing.
Patent Information
- Application Number
- CN202422110139.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-29
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2034-08-29
AI Technical Summary
Existing 3D printing consumables heating devices have low heating efficiency, making it difficult to meet the process requirements of high printing rates, leading to printing interruptions.
The heating channel design, filled with thermally conductive particles or thermally conductive magnetic particles, combined with limiting components and driving components, ensures that the consumables are heated to a molten state uniformly and rapidly.
It improves the efficiency of heating consumables to a molten state, ensuring the continuity and stability of the printing process.
Smart Images
Figure CN223735479U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to 3D printing technical field especially is 3D printing consumptive material heating device, nozzle subassembly and 3D printer. BACKGROUND
[0002] The heat conductivity coefficient of the consumptive material usually adopted in 3D printing is low, and under the condition of high printing rate and large consumptive material extrusion rate, the printing interruption problem caused by the failure of heating the consumptive material to the molten state is prone to occur. Under normal circumstances, the heating efficiency can only be improved by increasing the heating power and optimizing the structure of the heating channel, but the improvement effect of the heating efficiency of the consumptive material is still very limited, which is difficult to meet the process requirements of the improvement of the printing rate. SUMMARY
[0003] The utility model discloses a kind of 3D printing consumptive material heating device, nozzle subassembly and 3D printer, to alleviate the technical problem of low heating efficiency of 3D printing consumptive material heating device in prior art.
[0004] In a first aspect, the 3D printing consumptive material heating device is used to connect a spray head and heat the consumptive material entering the spray head to a molten state. The 3D printing consumptive material heating device includes a device body with a heating channel, and the heating channel is filled with particles.
[0005] In combination with the first aspect, the utility model provides a first possible implementation of the first aspect, wherein the particles include heat-conducting particles and / or magnetic particles.
[0006] In combination with the first aspect, the utility model provides a second possible implementation of the first aspect, wherein the particles include heat-conducting magnetic particles.
[0007] In combination with the first aspect, the utility model provides a third possible implementation of the first aspect, wherein the particles are configured in at least two groups, and the particle size of the multiple groups of particles decreases successively along the flow direction of the consumptive material.
[0008] In combination with the third possible implementation of the first aspect, the utility model provides a fourth possible implementation of the first aspect, wherein a first limiting member is provided between adjacent groups of particles, and the first limiting member is used to block the flow mixing of the particles in each group.
[0009] In combination with the first aspect, the utility model provides a fifth possible implementation of the first aspect, wherein a second limiting member is provided at the end of the heating channel close to the spray head, and the second limiting member is used to block the particles from entering the spray head.
[0010] In a second aspect, the utility model provides a nozzle assembly, include: spray head, throat pipe and first aspect record's 3D printing consumable heating device,
[0011] The spray head is connected to one end of the heating channel, and the throat pipe is connected to the other end of the heating channel.
[0012] In combination with the second aspect, the utility model provides a first possible implementation manner of the second aspect, wherein at least one driving device is arranged outside the device body, and the driving device extends in a direction parallel to the heating channel.
[0013] In combination with the first possible implementation manner of the second aspect, the utility model provides a second possible implementation manner of the second aspect, wherein in the case that one driving device is arranged outside the device body and a first limiting member is arranged between adjacent groups of the particles, the first limiting member is arranged obliquely relative to the extension direction of the heating channel, and the driving device is located on the side higher than the mounting position of the first limiting member.
[0014] In a third aspect, the utility model provides a 3D printer equipped with the above-mentioned 3D printing consumable heating device or nozzle assembly.
[0015] The utility model embodiment brings the following beneficial effects: the 3D printing consumable heating device is connected to the spray head, and the consumable entering the spray head is heated to a molten state, the 3D printing consumable heating device includes a device body with a heating channel, the heating channel is filled with particles inside, the particles can transfer heat and extrude the consumable, and the particles can also smoothly convey the unsoftened consumable along the gap between adjacent particles, which is conducive to realizing uniform and rapid heating of the consumable and improving the efficiency of heating the consumable to a molten state.
[0016] In order to make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the following preferred embodiments are described in detail below, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS
[0017] In order to more clearly illustrate the technical solutions in the specific embodiments or the related art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the related art description. Obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.
[0018] Figure 1 The schematic diagram of the nozzle assembly provided by the utility model embodiment Figure 1 ;
[0019] Figure 2The schematic view of the nozzle assembly provided by the embodiment of the utility model Figure 2 ;
[0020] Figure 3 The schematic view of the nozzle assembly provided by the embodiment of the utility model Figure 3 ;
[0021] Figure 4 The schematic view of the nozzle assembly provided by the embodiment of the utility model Figure 4 ;
[0022] Figure 5 The schematic view of a first limiting piece of the 3D printing consumable heating device provided by the embodiment of the utility model is shown in the figure.
[0023] Figure 6 The schematic view of another first limiting piece of the 3D printing consumable heating device provided by the embodiment of the utility model is shown in the figure.
[0024] Figure 7 The schematic view of a first kind of particle of the 3D printing consumable heating device provided by the embodiment of the utility model is shown in the figure.
[0025] Figure 8 The schematic view of a second kind of particle of the 3D printing consumable heating device provided by the embodiment of the utility model is shown in the figure.
[0026] Figure 9 The schematic view of a third kind of particle of the 3D printing consumable heating device provided by the embodiment of the utility model is shown in the figure.
[0027] Figure 10 The schematic view of a fourth kind of particle of the 3D printing consumable heating device provided by the embodiment of the utility model is shown in the figure.
[0028] Figure 11 The schematic view of a fifth kind of particle of the 3D printing consumable heating device provided by the embodiment of the utility model is shown in the figure.
[0029] Icon: 100 - device body; 101 - heating channel; 102 - first limiting piece; 103 - second limiting piece; 200 - nozzle; 300 - particle; 301 - magnetic particle; 302 - non-magnetic particle; 310 - first particle group; 320 - second particle group; 400 - throat pipe; 500 - driving device; 510 - first electromagnet; 520 - second electromagnet; 600 - first connecting piece; 700 - second connecting piece. DETAILED DESCRIPTION
[0030] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0031] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. Furthermore, the terms "first," "second," and "third" are only used to describe differences in name and should not be construed as indicating or implying relative importance. Physical quantities in formulas, unless otherwise specified, should be understood as basic quantities of the International System of Units (SI) base units, or derived quantities derived from basic quantities through mathematical operations such as multiplication, division, differentiation, or integration.
[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0033] like Figure 1 As shown, the 3D printing consumable heating device provided in this embodiment of the present invention is used to connect to the nozzle 200 and to heat the consumable entering the nozzle 200 to a molten state; the 3D printing consumable heating device includes a device body 100 having a heating channel 101, and the heating channel 101 is filled with particles 300.
[0034] In this embodiment, the particles 300 are made of heat-conducting material or part of the particles 300 are made of heat-conducting material. By arranging the particles 300 with high heat conductivity or adjusting the proportion and distribution density of the particles 300, a 3D printing consumable heating device that meets the heat conduction efficiency requirement is designed. Compared with the heating channel 101 with a complex structure, the manufacturing difficulty is reduced, and the flexibility of the heat conduction performance design is improved. In addition, in order to ensure that the consumable can be fully heated and smoothly pass through the gap between the adjacent particles 300, the gap size between the adjacent particles 300 is configured to be greater than the radius of the consumable and less than the diameter of the consumable. In this way, the heating channel 101 is filled with an appropriate amount of particles 300. In addition, the particles 300 can be configured to have multiple materials and multiple shapes, and the particles 300 can be mixed and filled into the heating channel 101. In addition, part of the non-heat-conducting particles can be mixed into the heating channel 101.
[0035] As shown in Figure 1 and Figure 3 , in an optional embodiment, the particles 300 include heat-conducting particles and / or magnetic particles 301. The particles 300 can be configured to have heat-conducting material or magnetic material, or the particles 300 can be mixed with heat-conducting particles and magnetic particles 301.
[0036] In another optional embodiment, the particles 300 include heat-conducting magnetic particles. The particles 300 are made of material that has both heat conduction and magnetism, so that the particles 300 have heat conduction performance and can be driven to flow by electromagnetic force.
[0037] In an optional embodiment, the particles 300 are configured in at least two groups. The particle diameters of the multiple groups of particles 300 gradually decrease along the consumable flow direction.
[0038] As shown in Figure 2 , in an optional embodiment, the particles 300 include a first particle group 310 and a second particle group 320. The first particle group 310 and the second particle group 320 are arranged in sequence along the extension direction of the heating channel 101. The second particle group 320 is located between the first particle group 310 and the nozzle 200. The particle diameter of the first particle group 310 is greater than the particle diameter of the second particle group 320. The particle diameter of the second particle group 320 is smaller, so that the gap between the adjacent second particle groups 320 is smaller. The consumable is preheated by the first particle group 310, and the softened and extruded consumable is further heated by the second particle group 320. The heat transfer contact area increases from the first particle group 310 to the second particle group 320, which ensures the smooth entry of the consumable and facilitates the rapid melting of the consumable.
[0039] Further, a first limiting member 102 is arranged between the adjacent groups of particles 300. The first limiting member 102 is used to block the flow mixing of the groups of particles 300.
[0040] As shown in Figure 2 andFigure 4 As shown, the first limiting member 102 is arranged between the first particle group 310 and the second particle group 320, and is used to prevent the first particle group 310 and the second particle group 320 from mixing with each other.
[0041] As shown in Figure 1 , Figure 2 and Figure 4 , the second limiting member 103 is arranged at the end of the heating channel 101 close to the nozzle 200, and is used to prevent the particles 300 from entering the nozzle 200.
[0042] In this embodiment, the first limiting member 102 and the second limiting member 103 can both adopt a mesh structure, which on one hand ensures that the consumables can pass through, and on the other hand prevents the particles 300 from overflowing. See Figure 1 , Figure 2 , Figure 4 and Figure 5 , an annular plate member can be arranged at the periphery of the mesh member to form a skeleton structure. See Figure 1 , Figure 2 , Figure 4 and Figure 6 , the first limiting member 102 and the second limiting member 103 can also be configured as an annular plate member, and a small hole is arranged in the middle of the annular plate member to allow the consumables to pass through, and the diameter of the small hole is smaller than the diameter of the particles 300, thereby effectively preventing the particles 300 from overflowing.
[0043] As shown in Figure 4 , the first limiting member 102 is arranged obliquely relative to the extension direction of the heating channel 101, and the particles 300 have better fluidity along the obliquely arranged first limiting member 102, so as to improve the heat uniformity by the flow of the particles 300.
[0044] As shown in Figure 3 , in an optional embodiment, the particles 300 further include non-magnetic particles 302, and the magnetic particles 301 and the non-magnetic particles 302 are mixedly distributed. The non-magnetic particles 302 can be made of a heat-conductive material or a non-heat-conductive material.
[0045] In the case of being provided with the magnetic particles 301, the particles 300 can be driven to flow by electromagnetic force outside the 3D printing consumable heating device, which increases the disturbance inside the heating channel 101 and is beneficial to the mixing and uniform heating of the consumables.
[0046] As shown in Figure 1 , Figures 7-11The particle 300 can be configured as a spherical body, an ellipsoidal body, a polyhedral body, or the like, and a protrusion or a pit can be arranged on the surface of the spherical body. Preferably, the surface of the particle 300 is polished or a smooth arc is arranged, which can ensure that the particle 300 can flow and avoid being stuck, and is beneficial to the smooth passing of the consumable. The material of the particle 300 can be iron or copper, and when the particle 300 is filled in the heating channel 101, the particle 300 with a single shape and a single material can be selected, or the particle 300 with multiple shapes and multiple materials can be mixed.
[0047] As shown in Figure 1 , Figure 2 , Figure 3 and Figure 4 , the nozzle assembly provided by the embodiment of the utility model has the advantages that the 3D printing consumable heating device is arranged in the heating channel 101, the particle 300 is filled in the heating channel 101, and the particle 300 is driven to flow in the heating channel 101 by the driving device 500, so that the consumable is heated and melted by the particle 300, and the particle 300 is prevented from being stuck in the heating channel 101.
[0048] The one end of the throat pipe 400 can be connected to the device body 100 through the first connecting piece 600, and the other end of the throat pipe 400 can be connected to the mechanical arm or the consumable supply device through the second connecting piece 700. The first connecting piece 600 and the second connecting piece 700 can be configured as a threaded connecting device or a buckle device, which is convenient for disassembly and maintenance. In addition, the device body 100 can be arranged in a split structure, so that the device body 100 forms a plurality of detachable structures along the extension direction of the heating channel 101, thereby facilitating the segmented filling of the particle 300.
[0049] As shown in Figure 3 and Figure 4 , in the embodiment of the utility model, at least one driving device 500 is arranged outside the device body 100, the driving device 500 extends in a direction parallel to the heating channel 101, and the driving device 500 is used to drive the particle 300 to flow in the heating channel 101. In the optional embodiment, the electromagnetic force can be generated by the driving device 500, so that the particle 300 can be driven to flow in the heating channel 101. In addition, the device body 100 can be configured as an electric heating device, or the device body 100 can be configured as a heat transfer device and a heating source is additionally arranged outside the device body 100.
[0050] It should be noted that, in addition to the electromagnetic induction to form the driving force, the magnetic resonance or the microwave can also be used to realize the non-contact driving, so that the particle 300 in the heating channel 101 can be driven outside the device body 100, and the flowing particle 300 can promote the flow and mixing of the molten consumable.
[0051] As shown in Figure 4As shown, in the case that the driving device 500 and the first limiting member 102 are arranged outside the device body 100 and between the adjacent groups of particles 300, the first limiting member 102 is arranged obliquely relative to the extending direction of the heating channel 101, and the driving device 500 is located at the side higher than the installation position of the first limiting member 102. In addition, the heating channel 101 is provided with a second limiting member 103 at the end close to the nozzle 200, and the second limiting member 103 can be arranged parallel to the first limiting member 102, so that the particles 300 can flow along the oblique first limiting member 102 and the second limiting member 103.
[0052] Referring to Figure 3 In an optional embodiment, the driving device 500 comprises a first electromagnet 510 and a second electromagnet 520, the first electromagnet 510 and the second electromagnet 520 respectively extend along the direction parallel to the heating channel 101, and the device body 100 is located between the first electromagnet 510 and the second electromagnet 520, the particles 300 are driven to flow inside the heating channel 101 by the electromagnetic force generated by the first electromagnet 510 and the second electromagnet 520 respectively, the first electromagnet 510 and the second electromagnet 520 can be configured to generate electromagnetic force in opposite directions, so as to make the particles 300 flow more smoothly. The first electromagnet 510 and the second electromagnet 520 can also be configured to generate electromagnetic force in the same direction, and the direction of the electromagnetic force is switched in reverse at a certain frequency, and the particles 300 are driven to flow by the first electromagnet 510 and the second electromagnet 520 together.
[0053] The 3D printer equipped with the 3D printing consumable heating device or nozzle assembly has the technical effects of the 3D printing consumable heating device or nozzle assembly, which will not be described here.
[0054] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.
Claims
1. A 3D printing consumable heating device for connecting a nozzle (200) and causing a consumable entering the nozzle (200) to be heated to a molten state; characterized in that, The 3D printing consumable heating device comprises a device body (100) with a heating channel (101) filled with particles (300) inside.
2. The 3D printing consumable heating device of claim 1, wherein, The particles (300) comprise thermally conductive particles and / or magnetic particles (301).
3. The 3D printing consumable heating device of claim 1, wherein, The particles (300) comprise thermally conductive magnetic particles.
4. The 3D printing consumable heating device of claim 1, wherein, The particles (300) are configured in at least two groups, and the particle size of the particles (300) in multiple groups decreases successively along the flow direction of the consumable.
5. The 3D printing consumable heating device of claim 4, wherein, A first limiting member (102) is arranged between adjacent groups of the particles (300), and the first limiting member (102) is used to block the flow mixing of the particles (300) in each group.
6. The 3D printing consumable heating device of claim 1, wherein, A second limiting member (103) is arranged at one end of the heating channel (101) close to the nozzle (200), and the second limiting member (103) is used to block the particles (300) from entering the nozzle (200).
7. A nozzle assembly characterized by, The 3D printing consumable heating device comprises: a nozzle (200), a throat pipe (400), and the 3D printing consumable heating device according to any one of claims 1-6; the nozzle (200) is connected to one end of the heating channel (101), and the throat pipe (400) is connected to the other end of the heating channel (101).
8. The nozzle assembly of claim 7, wherein, At least one driving device (500) is arranged outside the device body (100), the driving device (500) extends in a direction parallel to the heating channel (101), and the driving device (500) is used to drive the particles (300) to flow along the heating channel (101).
9. The nozzle assembly of claim 8, wherein, In the case that one driving device (500) is arranged outside the device body (100) and a first limiting member (102) is arranged between adjacent groups of the particles (300), the first limiting member (102) is arranged obliquely relative to the extension direction of the heating channel (101), and the driving device (500) is located on the side higher than the mounting position of the first limiting member (102).
10. A 3D printer characterized by, The 3D printer is equipped with the 3D printing consumable heating device according to any one of claims 1-6, or the 3D printer is equipped with the nozzle assembly according to any one of claims 7-9.