CN216032534U - 3D prints shower nozzle subassembly and 3D printer - Google Patents
3D prints shower nozzle subassembly and 3D printer Download PDFInfo
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- CN216032534U CN216032534U CN202121727401.9U CN202121727401U CN216032534U CN 216032534 U CN216032534 U CN 216032534U CN 202121727401 U CN202121727401 U CN 202121727401U CN 216032534 U CN216032534 U CN 216032534U
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Abstract
The utility model relates to the technical field of 3D printing, in particular to a 3D printing spray head assembly and a 3D printer. It includes that above-mentioned 3D prints shower nozzle subassembly to 3D printer. The micro-hole structural member is provided with a plurality of heating holes, so that the area of a heating area of the material is increased, the material is heated more quickly and sufficiently, the requirement of high-speed printing is met, and meanwhile, the overflow caused by the heating expansion of the material during idle running is avoided; the plurality of heating holes are arranged, so that the flowability of the material is reduced, the leakage is further reduced, and the surface printing effect is improved; the micro-hole structural member is detachably connected with the nozzle, can be directly refitted on the existing spray head, and has the advantages of convenient use and low cost.
Description
Technical Field
The utility model relates to the technical field of 3D printing, in particular to a 3D printing spray head assembly and a 3D printer.
Background
3D printing (3DP), a technique for constructing objects by layer-by-layer printing using bondable materials such as powdered metals or plastics based on digital model files, is one of the rapid prototyping techniques, also known as additive manufacturing. 3D printing is typically achieved using digital technology material printers. The method is often used for manufacturing models in the fields of mold manufacturing, industrial design and the like, and is gradually used for directly manufacturing some products, and parts printed by the technology are already available. The technology has applications in jewelry, footwear, industrial design, construction, engineering and construction (AEC), automotive, aerospace, dental and medical industries, education, geographic information systems, civil engineering, firearms, and other fields.
At present, a common 3D printing spray head structure is that a throat pipe and a nozzle are tightly connected together through threads on a heating block, and consumables are melted under the heating of the heating block through the throat pipe. However, when a large-diameter nozzle is used for high-speed printing, the material is not sufficiently heated in the nozzle, when the printing is stopped, the material is sufficiently heated and expanded, molten plastic can automatically flow out of the nozzle even if the molten plastic is not extruded, even if the molten plastic is pumped back, the material still leaks from the nozzle when the molten plastic moves for a long distance, and meanwhile, the extrusion amount is difficult to control when the molten plastic is extruded next time, so that the surface printing effect is poor.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provides a 3D printing spray head assembly to solve the technical problems that the existing large-caliber 3D printing spray head is insufficient in heating and materials are easy to overflow from a nozzle in the idle running process.
In order to solve the technical problems, the utility model adopts the following technical scheme:
a 3D printing nozzle assembly comprising:
a nozzle;
the micro-hole structure comprises a heat conduction part, a first connecting part and a second connecting part, wherein the first connecting part and the second connecting part are arranged outside the heat conduction part, the heat conduction part is provided with a plurality of heating holes for materials to pass through, the first connecting part is detachably connected with the nozzle, and the second connecting part is used for connecting a heating block.
Furthermore, the nozzle is provided with a discharge port, the heat conduction part is provided with at least two heating holes, the circumference of each heating hole is smaller than that of the discharge port, and the sum of the circumferences of the heating holes is larger than that of the discharge port.
Further, the sum of the areas of the heating holes is larger than the perimeter of the discharge hole.
Further, the heating holes are uniformly distributed in the heat conduction part.
The heating tube is connected with the heating block, the heating tube is used for adjusting the temperature of the heating block, the thermistor is used for detecting the temperature of the heating block, the heating block is provided with a heating channel for materials to pass through, and one end of the throat tube is connected with the heating channel; the micro-hole structural member is connected to one side of the heating block, which is far away from the throat pipe.
Furthermore, an installation groove is formed in one side, away from the throat pipe, of the heating channel, the diameter of the installation groove is larger than that of the heating channel, and the micro-hole structural member is arranged in the installation groove.
Further, the micropore structure spare with the mounting groove cooperation of pegging graft, the inner wall of mounting groove is provided with the internal thread, the nozzle is provided with first external screw thread, first external screw thread with internal thread threaded connection, the nozzle with micropore structure spare butt cooperation.
Furthermore, the inner wall of the mounting groove is provided with an internal thread, the second connecting part is a second external thread, and the second external thread is in threaded connection with the internal thread; the nozzle is provided with a third external thread, and the first connecting part is in threaded connection with the third external thread.
Further, the heat conducting part is in plug-in fit with the nozzle.
The utility model further aims to overcome the defects in the prior art and provide a 3D printer to solve the technical problems that the existing large-caliber 3D printing nozzle is not sufficiently heated, and materials are easy to overflow from the nozzle in the idle running process.
In order to solve the technical problems, the utility model adopts the following technical scheme:
A3D printer comprises the 3D printing nozzle assembly.
The utility model has the beneficial effects that:
firstly, the micro-hole structural member is provided with a plurality of heating holes, so that the area of a heating region of the material is increased, the material is heated more quickly and sufficiently, the requirement of high-speed printing is met, and meanwhile, the overflow caused by the heating expansion of the material during idle running is avoided;
secondly, the plurality of heating holes are arranged, so that the flowability of the material is reduced, the material leakage is further reduced, and the surface printing effect is improved;
thirdly, the micro-hole structural member is detachably connected with the nozzle, so that the existing spray head can be directly refitted, the use is very convenient, and the cost is lower.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a front view of a first embodiment of the 3D print head assembly;
FIG. 2 is an exploded view of the 3D print head assembly according to one embodiment;
FIG. 3 is a cross-sectional view of a first embodiment of the 3D print head assembly;
fig. 4 is a cross-sectional view of a second embodiment of the 3D print head assembly.
The labels in the figures illustrate: 10. a nozzle; 11. a discharge port; 20. a micro-porous structure; 21. a heat conducting portion; 22. A first connection portion; 23. a second connecting portion; 24. heating the hole; 30. a heat dissipating block; 40. a Teflon tube; 50. A throat; 60. a thermistor; 70. a heating block; 71. a heating channel; 72. mounting grooves; 80. heating the tube.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used in the specification of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.
Example one
A 3D printing nozzle assembly, as shown in fig. 1 to 3, includes a nozzle 10 and a micro-hole structure 20, where the micro-hole structure 20 includes a heat conducting portion 21, a first connecting portion (not labeled) and a second connecting portion (not labeled) disposed outside the heat conducting portion (not labeled), the heat conducting portion is provided with a plurality of heating holes 24 for materials to pass through, the first connecting portion is detachably connected to the nozzle 10, and the second connecting portion is used for connecting a heating block 70. Specifically, the micro-hole structure 20 is provided with a plurality of heating holes 24, so that the area of a heating region of the material is increased, the material is heated more quickly and sufficiently, the requirement of high-speed printing is met, and meanwhile, the overflow caused by the heating expansion of the material during idle running is avoided; in addition, the plurality of heating holes 24 are arranged, so that the flowability of the material is reduced, the material leakage is further reduced, and the surface printing effect is improved; meanwhile, the micro-hole structural member 20 is detachably connected with the nozzle 10, and can be directly refitted on the existing spray head, so that the use is very convenient, and the cost is lower.
In the present embodiment, the nozzle 10 is provided with a discharge port 11, the heat conducting portion 21 is provided with at least two heating holes 24, the circumference of each heating hole 24 is smaller than the circumference of the discharge port 11, and the sum of the circumferences of the heating holes 24 is larger than the circumference of the discharge port 11; the sum of the areas of the heating holes 24 is larger than the perimeter of the discharge hole 11; the heating holes 24 are uniformly distributed in the heat conducting portion 21. The contact area of material has been increased in the setting of heating hole 24, and it is abundant heating already when arriving the position in the 10 cavity of nozzle, is applicable to the 3D printer of large aperture shower nozzle, compares with the 3D printer of current large aperture shower nozzle, and this 3D prints shower nozzle subassembly and need not heat for a long time, can improve printing speed.
As shown in fig. 3, the 3D printing nozzle assembly further includes a heat dissipation block 30, a teflon tube 40, a throat 50, a thermistor 60, a heating block 70 and a heating pipe 80, wherein the throat 50 is sleeved outside the teflon tube 40, the heat dissipation block is disposed outside the throat 50, the heating pipe 80 is connected to the heating block 70, the heating pipe 80 is used for adjusting the temperature of the heating block 70, the thermistor 60 is used for detecting the temperature of the heating block 70, the heating block 70 is provided with a heating channel 71 for materials to pass through, and one end of the throat 50 is connected to the heating channel 71; the micro-hole structure 20 is connected to a side of the heating block 70 away from the throat 50. During specific work, materials sequentially pass through the fluorine dragon tube, the throat tube 50, the heating block 70, the micro-hole structural member 20 and the nozzle 10, the heat dissipation block is used for dissipating heat of the materials, the heating tubes 80 are uniformly distributed in the heating block 70, the heating block 70 and the micro-hole structural member 20 are made of heat conduction materials, the materials are conveniently heated and melted, the thermistor 60 can detect the temperature of the heating block 70, and the heating tube 80 adjusts the temperature of the heating block 70 according to the value of the thermistor 60.
As shown in fig. 3, for assembly convenience, an installation groove 72 is formed on a side of the heating channel 71 away from the throat 50, a diameter of the installation groove 72 is larger than that of the heating channel 71, and the micro-porous structure 20 is disposed in the installation groove 72. The mounting groove 72 may limit the micro-porous structure 20. Specifically, the overall micro-hole structure 20 is cylindrical, the micro-hole structure 20 is in plug-in fit with the mounting groove 72, an internal thread (no mark in the drawing) is arranged on the inner wall of the mounting groove 72, the nozzle 10 is provided with a first external thread (no mark in the drawing), the first external thread is in threaded connection with the internal thread, and the nozzle 10 is in butt fit with the micro-hole structure 20. In this embodiment, the heating block 70, the micro-porous structure 20 and the nozzle 10 are mechanically sealed. The arrangement of the micro-hole structural member 20 can be directly refitted on the existing spray head, which is convenient and low in cost.
The embodiment still relates to a 3D printer, and it includes foretell 3D prints shower nozzle subassembly.
Example two:
a 3D printing head assembly, as shown in fig. 4, the difference between the present embodiment and the first embodiment is that: an inner thread (not marked in the figures) is arranged on the inner wall of the mounting groove 72, the second connecting part 23 is a second external thread (not marked in the figures), and the second external thread is in threaded connection with the inner thread; the nozzle 10 is provided with a third external thread (not shown), and the first connection portion 22 is screwed with the third external thread. Specifically, the second connection portion 23 of the micro-hole structure 20 is connected in the mounting groove 72, the first connection portion 22 of the micro-hole structure 20 is located outside the heating block 70 and is in threaded connection with the nozzle 10, and the micro-hole structure 20 can be directly modified on the existing spray head, so that the spray head is convenient and low in cost.
Preferably, the heat conducting portion 21 is inserted into and matched with the nozzle 10, so that the connection strength between the nozzle 10 and the micro-hole structure 20 can be enhanced, and the material can flow more smoothly between the micro-hole structure 20 and the nozzle 10.
To sum up, compare prior art, this 3D prints shower nozzle subassembly has following beneficial effect at least:
firstly, the micro-hole structural member 20 is provided with a plurality of heating holes 24, so that the area of a heating region of the material is increased, the material is heated more quickly and sufficiently, the requirement of high-speed printing is met, and meanwhile, the overflow caused by the heating expansion of the material during idle running is avoided;
secondly, the plurality of heating holes 24 are arranged, so that the flowability of the material is reduced, the leakage is further reduced, and the surface printing effect is improved;
thirdly, the micro-hole structure member 20 is detachably connected with the nozzle 10, and can be directly refitted on the existing spray head, thereby being very convenient to use and having lower cost.
While the utility model has been described with reference to specific embodiments, the utility model is not limited thereto, and various equivalent modifications and substitutions can be easily made by those skilled in the art within the technical scope of the utility model. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a 3D prints shower nozzle subassembly which characterized in that includes:
a nozzle;
the micro-hole structure comprises a heat conduction part, a first connecting part and a second connecting part, wherein the first connecting part and the second connecting part are arranged outside the heat conduction part, the heat conduction part is provided with a plurality of heating holes for materials to pass through, the first connecting part is detachably connected with the nozzle, and the second connecting part is connected with a heating block.
2. The 3D printing head assembly according to claim 1, wherein the nozzle is provided with a discharge port, the heat conduction portion is provided with at least two heating holes, the circumference of each heating hole is smaller than that of the discharge port, and the sum of the circumferences of the heating holes is larger than that of the discharge port.
3. The 3D printing head assembly of claim 2, wherein a sum of areas of the heating holes is larger than a perimeter of the discharge port.
4. The 3D print head assembly of claim 3, wherein the heating holes are evenly distributed in the heat conducting portion.
5. The 3D printing nozzle assembly according to any one of claims 1-4, further comprising a heat dissipation block, a Teflon tube, a throat tube, a thermistor, a heating block, and a heating tube, wherein the throat tube is sleeved outside the Teflon tube, the heat dissipation block is arranged outside the throat tube, the heating tube is connected to the heating block, the heating tube is used for adjusting the temperature of the heating block, the thermistor is used for detecting the temperature of the heating block, the heating block is provided with a heating channel for materials to pass through, and one end of the throat tube is connected to the heating channel; the micro-hole structural member is connected to one side of the heating block, which is far away from the throat pipe.
6. The 3D printing nozzle assembly according to claim 5, wherein a mounting groove is formed in a side of the heating channel away from the throat, the mounting groove has a diameter larger than that of the heating channel, and the micro-hole structure is disposed in the mounting groove.
7. The 3D printing nozzle assembly according to claim 6, wherein the micro-hole structure member is in plug fit with the mounting groove, an inner wall of the mounting groove is provided with an inner thread, the nozzle is provided with a first outer thread, the first outer thread is in threaded connection with the inner thread, and the nozzle is in butt fit with the micro-hole structure member.
8. The 3D printing nozzle assembly according to claim 6, wherein an inner thread is arranged on an inner wall of the mounting groove, the second connecting portion is a second outer thread, and the second outer thread is in threaded connection with the inner thread; the nozzle is provided with a third external thread, and the first connecting part is in threaded connection with the third external thread.
9. The 3D printing head assembly of claim 8, wherein the heat conducting portion is in plug fit with the nozzle.
10. A 3D printer comprising the 3D print head assembly of any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121727401.9U CN216032534U (en) | 2021-07-27 | 2021-07-27 | 3D prints shower nozzle subassembly and 3D printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121727401.9U CN216032534U (en) | 2021-07-27 | 2021-07-27 | 3D prints shower nozzle subassembly and 3D printer |
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| Publication Number | Publication Date |
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| CN216032534U true CN216032534U (en) | 2022-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121727401.9U Active CN216032534U (en) | 2021-07-27 | 2021-07-27 | 3D prints shower nozzle subassembly and 3D printer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024243749A1 (en) * | 2023-05-26 | 2024-12-05 | 深圳市创想三维科技股份有限公司 | Hotend and head set using same, and 3d printing device |
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2021
- 2021-07-27 CN CN202121727401.9U patent/CN216032534U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024243749A1 (en) * | 2023-05-26 | 2024-12-05 | 深圳市创想三维科技股份有限公司 | Hotend and head set using same, and 3d printing device |
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