Heat dissipation device for combining spray head and throat pipe of 3D printer

Abstract

The utility model discloses a heat dissipation device for the combination of 3D printer nozzle and throat pipe, including heat dissipation piece, throat pipe, heat insulation feed delivery pipe and graphene heat conducting fin, wherein the heat dissipation piece is provided with first through hole, the both sides of heat dissipation piece are also provided with multi-layer heat dissipation fin, throat pipe is made of titanium alloy material, one end of throat pipe passes through the first through hole, and the other end of throat pipe passes through the graphene heat conducting fin. One end of the throat pipe is connected with the heat dissipation piece, the other end of the throat pipe is exposed out of the heat dissipation piece, the heat insulation conveying pipe is made of Teflon materials and arranged in the throat pipe in a penetrating mode, and the graphene heat conduction piece is arranged between the throat pipe and the side wall of the first through hole of the heat dissipation piece. Through the above mode, the graphene heat-conducting fin clamped between the throat pipe and the heat-dissipating piece of the heat-dissipating device disclosed by the utility model can quickly transfer high temperature generated during working to the heat-dissipating piece for heat dissipation, and the heat-dissipating piece and the plurality of layers of heat-dissipating fins can better dissipate heat, so that the heat-dissipating efficiency is relatively high, and the service life of the heat-dissipating device is prolonged. And the throat pipe is in a relatively stable temperature range, the structure is simple, and the maintenance cost is relatively low.

Description

Technical Field

[0001] This utility model relates to the field of heat dissipation technology for 3D printer throats, specifically a heat dissipation device that combines a 3D printer nozzle with a throat. Background Technology

[0002] 3D printing is a rapid prototyping technology that directly builds three-dimensional objects by stacking materials layer by layer. The nozzle of a 3D printer is the core component of the printer, and the high-temperature material in the printer needs to be delivered to the nozzle through a throat. The throat is a key component connecting the extrusion mechanism and the nozzle. If the throat temperature is too high, the material will soften and expand prematurely in the non-melting zone, which will increase the extrusion resistance, carbonize the filament, or cause debris accumulation, ultimately leading to nozzle blockage and printing failure. Therefore, a heat dissipation device is needed to control the throat temperature of the nozzle within a certain range.

[0003] However, most traditional heat sinks currently use air cooling and simple fin structures, which have problems such as low heat dissipation efficiency and rapid thermal creep. In recent years, although liquid cooling designs have appeared on the market, their complex structure and high maintenance costs still exist. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a heat dissipation device that combines a 3D printer nozzle with a throat tube, thereby solving the aforementioned technical problems.

[0006] (II) Technical Solution

[0007] To solve the above-mentioned technical problems, this utility model provides a technical solution: a heat dissipation device for combining a 3D printer nozzle and a throat, characterized in that it includes: a heat dissipation component with a first through hole; a throat made of titanium alloy, wherein one end of the throat is inserted into the first through hole and the other end of the throat is exposed outside the heat dissipation component; a heat-insulated feed pipe made of Teflon material, wherein the heat-insulated feed pipe is inserted into the throat; and a graphene thermal conductive sheet disposed between the throat and the sidewall of the first through hole of the heat dissipation component.

[0008] Preferably, one end of the heat sink is provided with a receiving groove communicating with the first through hole, the side wall of the receiving groove is provided with a first internal thread, and the other end of the heat sink is provided with an extension that is connected to the other end of the throat.

[0009] Preferably, the receiving groove is circular in shape, wherein the diameter of the receiving groove is larger than the diameter of the first through hole.

[0010] Preferably, the extension includes a first extension and a second extension outside the first through hole, wherein the first extension has a first locking groove and the second extension has a second locking groove, and the other end of the throat tube extends with a first locking member for locking in the first locking groove and a second locking member for locking in the second locking groove.

[0011] Preferably, one side wall of the first extension member is provided with a first threaded hole communicating with the first locking groove, the second extension member is provided with a second threaded hole communicating with the second locking groove, one side wall of the first locking member is provided with a third threaded hole corresponding to the first threaded hole, and one side wall of the second locking member is provided with a fourth threaded hole corresponding to the second threaded hole, wherein the first threaded hole and the third threaded hole are threadedly connected to a first screw, and the second threaded hole and the fourth threaded hole are threadedly connected to a second screw.

[0012] Preferably, the throat tube and the heat-insulated conveying pipe are of equal length, and the two end faces of the throat tube and the two end faces of the heat-insulated conveying pipe are on the same horizontal plane.

[0013] Preferably, the heat sink is rectangular in shape, wherein multiple layers of heat sink fins are provided on both sides of the heat sink, and the heat sink is provided with mounting holes.

[0014] Preferably, the throat tube is detachably disposed within the first through hole.

[0015] Preferably, the inner wall of the first through hole is provided with a second internal thread, and the outer side of the throat is provided with a first external thread that is threadedly connected to the second internal thread.

[0016] Preferably, the throat tube, the first retaining member, and the second retaining member are cross-shaped and integrally formed.

[0017] (III) Beneficial Effects

[0018] Compared with the prior art, the present invention provides a heat dissipation device for combining a 3D printer nozzle and a throat, which has the following beneficial effects: The heat dissipation device for combining a 3D printer nozzle and a throat disclosed in the present invention includes a heat dissipation component, a throat, a heat-insulating feed pipe, and a graphene heat-conducting sheet. The heat dissipation component has a first through hole, and multiple layers of heat dissipation sheets are provided on both sides of the heat dissipation component. The throat is made of titanium alloy, with one end of the throat passing through the first through hole and the other end of the throat exposed outside the heat dissipation component. The heat-insulating feed pipe is made of Teflon material and passes through the throat. The graphene heat-conducting sheet is disposed between the throat and the side wall of the first through hole of the heat dissipation component. Through the above method, the graphene thermal conductive sheet sandwiched between the throat and the heat sink of the heat dissipation device disclosed in this utility model can quickly transfer the high temperature generated during operation to the heat sink for heat dissipation. Moreover, the heat sink and the multi-layer heat sink on both sides of the heat sink can dissipate heat better, resulting in relatively high heat dissipation efficiency, keeping the throat in a relatively stable temperature range, and the simple structure results in relatively low maintenance costs. Based on this, the other end of the throat is also connected to the heat sink by a threaded detachable connection, which greatly improves the bending stiffness of the throat. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the heat dissipation device for combining a 3D printer nozzle and a throat tube according to the present invention.

[0020] Figure 2 for Figure 1 A first-person view of the heat dissipation device.

[0021] Figure 3 for Figure 1 A second-view schematic diagram of the heat dissipation device.

[0022] Figure 4 for Figure 1 A three-dimensional structural diagram of the heat dissipation component;

[0023] Figure 5 for Figure 1 A three-dimensional structural diagram of the middle throat tube;

[0024] Figure 6 for Figure 1 A three-dimensional structural diagram of the insulated material conveying pipe;

[0025] Figure 7 for Figure 1 A cross-sectional view of the heat dissipation device. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] like Figure 1-7 As shown, the heat dissipation device for combining a 3D printer nozzle and a throat disclosed in this utility model includes a heat dissipation component 1, a throat 2, a heat-insulated feed pipe 3, and a graphene thermal conductive sheet.

[0028] The heat sink 1 has a first through hole 11. It should be understood that the heat sink 1 is made of a thermally conductive material, such as aluminum, copper, or other heat-dissipating materials.

[0029] The throat 2 is made of titanium alloy, with one end of the throat 2 passing through the first through hole 11 and the other end exposed outside the heat sink 1. It should be understood that the titanium alloy throat 2 combines lightweight, high strength and high temperature resistance. The reinforced structural design, in conjunction with the heat sink 1, can resist bending and torsional stress in complex printing paths, ensuring continuous material delivery.

[0030] The insulated feed tube 3 is made of Teflon material and is installed inside the throat tube 2. It should be understood that Teflon material has good self-lubrication, which reduces the resistance to filament feeding, allowing the printing filament to smoothly pass through the inner cavity of the insulated feed tube 3. Furthermore, Teflon material is heat-resistant, thus resisting thermal shock and slowing down the temperature rise inside the tube, further preventing the filament from overheating and clogging the feed tube.

[0031] A graphene thermal conductive sheet is disposed between the throat 2 and the sidewall of the first through hole 11 of the heat sink 1. It should be understood that the graphene thermal conductive sheet is tightly attached to the throat 2 and the heat sink 1, so that heat can be quickly transferred to the heat sink 1 through the graphene thermal conductive sheet.

[0032] In this embodiment, one end of the heat sink 1 is provided with a receiving groove 12 communicating with the first through hole 11, the side wall of the receiving groove 12 is provided with a first internal thread 121, and the other end of the heat sink 1 is provided with an extension 5 connected to the other end of the throat 2.

[0033] Preferably, the receiving groove 12 is circular in shape, wherein the diameter of the receiving groove 12 is larger than the diameter of the first through hole 11.

[0034] It is worth noting that in this embodiment, the extrusion mechanism (output tube) can be threaded into the receiving groove 12, and the nozzle can be threaded into the other end of the throat tube 2, or the extrusion mechanism can be threaded into the other end of the throat tube 2, and the nozzle can be threaded into the receiving groove 12.

[0035] In this embodiment, the extension 5 includes a first extension 51 and a second extension 52 located outside the first through hole 11. The first extension 51 has a first locking groove 511, and the second extension 52 has a second locking groove 521. The other end of the throat 2 extends with a first locking member 21 for locking in the first locking groove 511 and a second locking member 22 for locking in the second locking groove 521. It should be understood that after the other end of the throat 2 is locked in the extension 5, the throat 2 will no longer bend when the printer moves the printhead during printing, which greatly improves the torsional stiffness of the throat 2. At the same time, the throat 2 can also provide protection for the material conveying process of the heat-insulated material conveying pipe 3, avoiding the possibility of damage to the outer wall of the heat-insulated material conveying pipe 3.

[0036] Furthermore, one side wall of the first extension 51 is provided with a first threaded hole 512 communicating with the first locking groove 511, and the second extension 52 is provided with a second threaded hole 522 communicating with the second locking groove 521. One side wall of the first locking member 21 is provided with a third threaded hole 211 corresponding to the first threaded hole 512, and one side wall of the second locking member 22 is provided with a fourth threaded hole 221 corresponding to the second threaded hole 522. The first threaded hole 512 and the third threaded hole 211 are threadedly connected with a first screw, and the second threaded hole 522 and the fourth threaded hole 221 are threadedly connected with a second screw. It should be understood that connecting the locking member of the throat tube 2 to the locking groove of the extension 5 with screws allows the throat tube 2 to be locked more stably.

[0037] In this embodiment, the throat tube 2 is detachably disposed in the first through hole 11, so that the throat tube 2 can be replaced as needed, resulting in low maintenance costs.

[0038] Specifically, the inner wall of the first through hole 11 is provided with a second internal thread 111, and the outer side of the throat tube 2 is provided with a first external thread 23 that is threadedly connected to the second internal thread 111, so that the throat tube 2 is threadedly connected to the first through hole 11.

[0039] In other words, when it is necessary to perform routine maintenance on the heat dissipation device or replace the internal throat and heat insulation conveying pipe 3, it is only necessary to remove the first retaining member 21 and the second retaining member 22 from the threaded part of the extension 5 of the heat dissipation member 1. Then the throat 2 can be removed from the internal thread of the first through hole 11 of the heat dissipation member 1 for replacement. The process is simple and convenient and more suitable for routine maintenance, which indirectly makes the maintenance cost lower.

[0040] In this embodiment, the throat 2 and the heat-insulated conveying pipe 3 are of equal length, and the two end faces of the throat 2 and the two end faces of the heat-insulated conveying pipe 3 are on the same horizontal plane.

[0041] Preferably, the heat sink 1 is rectangular, with multiple layers of heat sink fins 13 on both sides, and mounting holes 14 are provided on the heat sink 1. It should be understood that the mounting holes 14 on the heat sink 1 have a dual function: firstly, when the heat sink 1 is not in use and does not require heat dissipation, it can be inserted through the mounting holes 14 or connected to other places for storage; secondly, in the event of extreme high temperature, the heat sink 2 inside the throat can be rapidly dissipated through the mounting holes 14.

[0042] Specifically, the heat sink 1 and the multi-layer heat sinks 13 on both sides of the heat sink 1 together form a fractal tree-like structure, that is, the multi-layer heat sinks 5 are distributed in a fractal tree shape on the heat sink 1. The heat sink with this fractal tree-like structure can provide better heat dissipation performance when dissipating heat, so that the heat sink 1 has a simple structure and excellent heat dissipation efficiency.

[0043] Preferably, the throat tube 2, the first retaining member 21, and the second retaining member 22 are cross-shaped and integrally formed.

[0044] Preferably, the heat sink 1, the extension 5, and the multi-layer heat sink 13 are integrally formed.

[0045] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0046] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heat dissipation device for combining a 3D printer nozzle and a throat, characterized in that, include: The heat sink has a first through hole; The throat is made of titanium alloy, wherein one end of the throat is inserted into the first through hole, and the other end of the throat is exposed outside the heat sink. The insulated conveying pipe is made of Teflon material, and the insulated conveying pipe is inserted into the throat. A graphene thermal conductive sheet is disposed between the throat tube and the sidewall of the first through hole of the heat sink.

2. The heat dissipation device for combining a 3D printer nozzle and a throat as described in claim 1, characterized in that, One end of the heat sink is provided with a receiving groove communicating with the first through hole, and the side wall of the receiving groove is provided with a first internal thread. The other end of the heat sink is provided with an extension that is connected to the other end of the throat.

3. The heat dissipation device for combining a 3D printer nozzle and a throat as described in claim 2, characterized in that, The receiving groove is circular in shape, and the diameter of the receiving groove is larger than the diameter of the first through hole.

4. The heat dissipation device for combining a 3D printer nozzle and a throat as described in claim 2, characterized in that, The extension includes a first extension and a second extension located outside the first through hole. The first extension has a first locking groove, and the second extension has a second locking groove. The other end of the throat tube extends with a first locking member for locking in the first locking groove and a second locking member for locking in the second locking groove.

5. The heat dissipation device for combining a 3D printer nozzle and a throat as described in claim 4, characterized in that, The first extension has a first threaded hole on one side wall that communicates with the first locking groove, the second extension has a second threaded hole that communicates with the second locking groove, the first locking member has a third threaded hole on one side wall that corresponds to the first threaded hole, and the second locking member has a fourth threaded hole on one side wall that corresponds to the second threaded hole. The first threaded hole and the third threaded hole are threadedly connected to a first screw, and the second threaded hole and the fourth threaded hole are threadedly connected to a second screw.

6. The heat dissipation device for combining a 3D printer nozzle and a throat as described in claim 1, characterized in that, The throat tube is the same length as the insulated conveying pipe, and the two end faces of the throat tube are at the same horizontal plane as the two end faces of the insulated conveying pipe.

7. The heat dissipation device for combining a 3D printer nozzle and a throat as described in claim 1, characterized in that, The heat sink is rectangular in shape, and has multiple layers of heat sink fins on both sides, and has mounting holes.

8. The heat dissipation device for combining a 3D printer nozzle and a throat as described in claim 1, characterized in that, The throat tube is detachably installed inside the first through hole.

9. The heat dissipation device for combining a 3D printer nozzle and a throat as described in claim 8, characterized in that, The inner wall of the first through hole is provided with a second internal thread, and the outer side of the throat is provided with a first external thread that is threadedly connected to the second internal thread.

10. The heat dissipation device for combining a 3D printer nozzle and a throat according to claim 5, characterized in that, The throat tube, the first retaining member, and the second retaining member are cross-shaped and integrally formed.

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