CN114505502B - Be suitable for 3D of wire material and print shower nozzle - Google Patents

Be suitable for 3D of wire material and print shower nozzle Download PDF

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Publication number
CN114505502B
CN114505502B CN202210065210.3A CN202210065210A CN114505502B CN 114505502 B CN114505502 B CN 114505502B CN 202210065210 A CN202210065210 A CN 202210065210A CN 114505502 B CN114505502 B CN 114505502B
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China
Prior art keywords
melting
hole
nozzle
insulating
wire
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CN202210065210.3A
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Chinese (zh)
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CN114505502A (en
Inventor
聂文忠
韩笑
曾嘉艺
李祖彦
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Shanghai Institute of Technology
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Shanghai Institute of Technology
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Priority to CN202210065210.3A priority Critical patent/CN114505502B/en
Publication of CN114505502A publication Critical patent/CN114505502A/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F12/00Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
    • B22F12/50Means for feeding of material, e.g. heads
    • B22F12/53Nozzles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/20Direct sintering or melting
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/30Process control
    • B22F10/32Process control of the atmosphere, e.g. composition or pressure in a building chamber
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B33ADDITIVE MANUFACTURING TECHNOLOGY
    • B33YADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y10/00Processes of additive manufacturing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B33ADDITIVE MANUFACTURING TECHNOLOGY
    • B33YADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y30/00Apparatus for additive manufacturing; Details thereof or accessories therefor

Abstract

The invention discloses a 3D printing nozzle suitable for a metal wire, which utilizes resistance to melt the wire and comprises a nozzle body, a wire feeding pipe and a nozzle. The inside melting chamber that is equipped with of shower nozzle body, laminating are equipped with first insulating thermal-insulated bush on the melting chamber inner wall, and the region in the first insulating thermal-insulated bush forms the melting interval. The spray head body is respectively provided with a positive electrode hole and a gas inlet hole which are communicated with the melting zone, the positive electrode hole is used for the positive electrode rod to pass through, and the positive electrode hole is provided with a positive electrode rod connector for fixing the positive electrode rod; an air inlet pipe joint is arranged on the air inlet hole and used for fixing the air inlet pipe. The output end of the wire feeding pipe is communicated with the melting zone, and the input end extends out of the nozzle body. The nozzle is installed on the shower nozzle body, and the laminating is equipped with the insulating heat-proof bush of second on the runner inner wall of nozzle. The inflow end of the runner is communicated with the melting zone, and the spraying end of the runner is arranged outside the nozzle body. The wire is heated by resistance and then becomes molten or semi-molten, and the molten metal is extruded from the discharge end of the nozzle by pneumatic extrusion.

Description

Be suitable for 3D of wire material and print shower nozzle
Technical Field
The invention belongs to the field of 3D printing spray heads, and particularly relates to a 3D printing spray head applicable to metal wires.
Background
Fused deposition rapid prototyping (Fused Deposition Modeling, FDM for short) is another fast prototyping process that is relatively widely used following the light-cured fast prototyping and laminate fast prototyping processes. The FDM rapid prototyping process is a shaping method that heats and melts various wires without relying on laser as the shaping energy source. The process forms a three-dimensional product by layer-by-layer solidification of the molten filaments.
At present, the non-metallic material 3D printing is mainly carried out in a melting extrusion mode, a wire is fed into a nozzle provided with resistance heating, the wire is heated and melted into a semi-molten state, a new wire is continuously fed into the nozzle, the pressure in the nozzle is increased by the semi-molten state forming material, and the forming material is sprayed out by small holes below the nozzle to be stacked and formed. The metal 3D printing technology generally uses laser as a heating source, and the heat source of the laser rapidly moves on the powder layer of the processing plane by emitting the laser and changing the irradiation angle of the laser so as to achieve the purpose of sintering and forming.
Compared with the 3D printing technology using laser as a heat source, the FDM technology does not need laser, is simple to use and maintain and has lower cost. However, the temperature required for melt molding is high, and the nozzle cannot be applied to the conventional nozzle.
Disclosure of Invention
In order to solve the above problems, the present invention provides a 3D printing nozzle for a metal wire, where the metal wire can be in a molten state or a semi-molten state after being heated by resistance in the 3D printing nozzle for a metal wire provided by the present invention, and the molten metal is extruded from a small hole (i.e., an ejection end) of a nozzle by a pneumatic extrusion method, and stacked layer by layer according to a three-dimensional model set previously.
The technical scheme of the invention is as follows:
a 3D printing head for a metal wire, melting the wire using a resistor, comprising:
the spray head comprises a spray head body, a spray head body and a spray head cover, wherein a melting cavity is formed in the spray head body, a first insulating and heat-insulating lining is attached to the inner wall of the melting cavity, and a melting interval is formed in the region in the first insulating and heat-insulating lining; the spray head body is respectively provided with a positive hole and a gas inlet hole which are communicated with the melting zone, the positive hole is used for the positive rod to pass through, and the positive hole is provided with a positive rod connector for fixing the positive rod; an air inlet pipe joint is arranged on the air inlet hole and used for fixing an air inlet pipe;
the output end of the wire feeding pipe is communicated with the melting zone, and the input end of the wire feeding pipe extends out of the nozzle body;
the nozzle is arranged on the nozzle body, and a second insulating and heat-insulating lining is attached to the inner wall of the flow passage of the nozzle; the inflow end of the runner is communicated with the melting zone, and the spraying end of the runner is arranged outside the spray head body.
Preferably, the part of the wire feeding pipe arranged outside the nozzle body is wound with a water cooling pipe for heat dissipation.
Preferably, the nozzle body is provided with a mounting hole, the melting cavity and a nozzle hole which are sequentially communicated, the mounting hole, the melting cavity and the nozzle hole form a through hole penetrating through the nozzle body, and the first insulating layer is arranged on the inner side wall of the melting cavity;
the surface of the melting cavity, which is communicated with the mounting hole, is a covering surface of the melting cavity; a melting cover is matched with the mounting hole, the melting cover is mounted in the mounting hole through threads, and the melting cover covers the covering surface on the melting cavity; the output end of the wire feeding pipe penetrates through the melting cover and is communicated with the melting zone;
the nozzle is installed in the nozzle hole through threads, and the corresponding part of the spraying end of the nozzle extends out of the nozzle hole.
Preferably, the device further comprises a wire feeding pipe joint;
the melting cover is provided with a joint mounting hole and a wire feeding hole which are mutually communicated, the wire feeding hole is matched with the wire feeding pipe and is communicated with the melting zone, and the wire feeding pipe penetrates through the joint mounting hole and the wire feeding pipe and is communicated with the melting zone;
the wire feeding pipe joint is installed in the joint installation hole through threads, and the wire feeding pipe joint is sleeved and fixed with the wire feeding pipe.
Preferably, the region in the second insulating and heat-insulating bush forms a flow section, the flow section communicates with the melting section at a position corresponding to the inflow end, and a surface in communication with the melting section on the flow section covers a surface in communication with the flow section on the melting section.
Preferably, the aperture of the flow passage at the ejection end portion is gradually reduced in the sequential direction.
Preferably, the shape of the melting cavity is a truncated cone or a truncated pyramid, and the aperture of the melting cavity gradually decreases along the sequence direction.
Preferably, the first insulating sleeve and/or the second insulating sleeve are ceramic sleeves.
Preferably, the spray head body has opposing first and second surfaces, and a side surface between the first and second surfaces;
the wire feeding pipe penetrates through the first surface and is communicated with the melting zone, the nozzle is mounted on the second surface, and the anode hole and the air inlet hole are respectively communicated with the melting zone from the side surfaces.
Preferably, the positive hole and one end of the air inlet hole, which are communicated with the melting section, are both arranged on the inner wall of the melting cavity, and the first insulating and heat-insulating lining is respectively provided with avoidance holes corresponding to the positive hole and the air inlet hole, which are respectively used for the communication between the positive hole and the melting section and between the air inlet hole and the melting section.
By adopting the technical scheme, the invention has the following advantages and positive effects compared with the prior art:
according to the 3D printing nozzle suitable for the metal wire, the metal wire is fed into the melting zone through the wire feeding pipe, meanwhile, the metal wire is connected with the negative electrode of the power supply, the positive electrode rod is fixed in the positive electrode hole through the positive electrode rod connector, the positive electrode rod stretches into the melting zone to be in contact with the metal wire, heating and melting are carried out, inert gas introduced through the air inlet is used for extruding the metal wire, and meanwhile, the inert gas can play a certain role in protection. Under the extrusion of inert gas, molten metal wire is extruded into a nozzle and extruded from the discharge end (i.e., a small hole) of the nozzle.
Meanwhile, the arrangement of the first insulating lining and the second insulating lining can play a certain role in protecting the nozzle and the melting cavity, so that the use and maintenance are convenient and quick.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention.
FIG. 1 is a schematic diagram of a 3D printing head suitable for wire materials according to the present invention;
fig. 2 is a schematic cross-sectional view of a 3D printing head suitable for wire materials according to the present invention.
Reference numerals illustrate:
1: a wire feeding tube; 2: a wire feed pipe joint; 3: a water-cooled tube; 4: a melting cover; 5: a melting section; 6: a first insulating sleeve; 7: an air inlet hole; 8: an air inlet pipe joint; 9: a positive electrode hole; 10: a positive electrode rod joint; 11: a nozzle; 12: a second insulating sleeve; 13: a spray head body.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will explain the specific embodiments of the present invention with reference to the accompanying drawings. It is evident that the drawings in the following description are only examples of the invention, from which other drawings and other embodiments can be obtained by a person skilled in the art without inventive effort.
For the sake of simplicity of the drawing, the parts relevant to the present invention are shown only schematically in the figures, which do not represent the actual structure thereof as a product. Additionally, in order to simplify the drawing for ease of understanding, components having the same structure or function in some of the drawings are shown schematically with only one of them, or only one of them is labeled. Herein, "a" means not only "only this one" but also "more than one" case.
Referring to fig. 1 and 2, the present embodiment provides a 3D printing head applicable to a metal wire, which melts the wire using resistance, including a head body 13, a wire feed pipe 1, and a nozzle 11. The inside melting chamber that is equipped with of shower nozzle body 13, laminating is equipped with first insulating thermal insulation bush 6 on the melting chamber inner wall, and the region in the first insulating thermal insulation bush 6 forms melting interval 5. The spray head body 13 is respectively provided with a positive electrode hole 9 and an air inlet 7 which are communicated with the melting zone 5, the positive electrode hole 9 is used for the penetration of a positive electrode rod, and the positive electrode hole 9 is provided with a positive electrode rod joint 10 for fixing the positive electrode rod; an air inlet pipe joint 8 is arranged on the air inlet hole 7 and is used for fixing an air inlet pipe. The output end of the wire feeding pipe 1 is communicated with the melting zone 5, and the input end extends out of the nozzle body 13. The nozzle 11 is mounted on the nozzle body 13, and a second insulating and heat-insulating lining 12 is attached to the inner wall of the flow passage of the nozzle 11. The inflow end of the runner is communicated with the melting zone 5, and the ejection end of the runner is arranged outside the nozzle body 13.
The 3D printing nozzle suitable for metal wires provided in this embodiment can heat the fed metal wires to a semi-molten state by using a resistance heating manner, then extrude the molten metal wires by increasing the air pressure in the nozzle 11 (through the air inlet 7), and extrude the molten metal wires by using the ejection end (i.e. a small hole) of the nozzle 11, so as to achieve the purpose of metal melt extrusion molding. In view of the melting mode of resistance heating and the high temperature performance of the molten metal, the first insulating bush 6 is provided in the melting chamber, and the second insulating bush 12 is provided in the flow path of the nozzle 11.
The structure of the present embodiment will now be described.
The nozzle body 13 is provided with a mounting hole, the melting cavity and a nozzle hole which are sequentially communicated, and the mounting hole, the melting cavity and the nozzle hole form a through hole penetrating through the nozzle body 13. The shape of the melting cavity is a truncated cone or a prismatic table, and the aperture of the melting cavity is gradually reduced along the sequence direction, so that the semi-molten state or molten state metal wire material can flow towards the direction of the nozzle hole. The shape of the first insulating bushing 6 is matched with that of the melting cavity, and the first insulating bushing is closely attached to the inner side wall of the melting cavity. One ends of the positive electrode hole 9 and the air inlet hole 7, which are communicated with the melting section 5, are all arranged on the inner wall of the melting chamber, and avoidance holes corresponding to the positive electrode hole 9 and the air inlet hole 7 are respectively arranged on the first insulating and heat-insulating lining 6 and are respectively used for communicating the positive electrode hole 9 and the air inlet hole 7 with the melting section 5. The positive electrode hole 9 and the avoiding hole corresponding to the positive electrode hole 9 are coaxial, so that the positive electrode rod can conveniently enter the melting zone 5. The air inlet 7 and the avoidance hole corresponding to the air inlet 7 are coaxial, so that inert gas can conveniently enter the melting zone 5.
The positive electrode rod can be a graphite rod or the like, and when the positive electrode rod stretches into the melting zone 5, the positive electrode rod stretches into the center of the melting zone 5 so as to enable the metal wire material to form a short circuit with the positive electrode rod, and the metal wire material is heated and melted.
The surface of the melting cavity communicated with the mounting hole is the coverage surface of the melting cavity. A melting cover 4 is adapted to the mounting hole, the melting cover 4 is mounted in the mounting hole by screw threads, and the melting cover 4 covers the covering surface on the melting cavity, the melting cover 4 compresses the first insulating heat insulation lining 6, and a seal between the melting cover 4 and the melting section 5 is formed.
The output end of the wire feeding pipe 1 is penetrated with a melting cover 4 which is communicated with a melting zone 5. Specifically, the melting cover 4 is provided with a joint mounting hole and a wire feeding hole which are mutually communicated, the wire feeding hole is matched with the wire feeding pipe 1 and is communicated with the melting section 5, and the wire feeding pipe 1 is penetrated with the joint mounting hole and the wire feeding pipe 1 and is communicated with the melting section 5. A wire feed pipe joint 2 is installed in the joint installation hole through threads, and the wire feed pipe 1 is sleeved and fixed by the wire feed pipe joint 2, and specifically, the wire feed pipe 1 and the wire feed pipe joint 2 can be clamped by a metal clamp.
The two ends of the wire feeding pipe 1 are respectively an input end and an output end, the output end is one end communicated with the melting section 5 and is used for feeding the metal wire into the melting section 5, and the output end is an inlet for the metal wire to enter the wire feeding pipe 1. The output end of the wire feeding pipe 1 can be conical, and the pipe diameter is gradually reduced along the wire feeding direction, so that the wire feeding and correction are facilitated.
The part of the wire feeding pipe 1 outside the nozzle body 13 can be wound with a water cooling pipe 3 for heat dissipation. The cold water pipe can be a copper pipe, the water cooling pipe 3 is filled with flowing cold water, and heat dissipation is performed by utilizing the heat conducting property of the copper pipe. Specifically, the cold water pipe may be wound around the periphery of the wire feed pipe 1 in a clockwise direction.
The nozzle 11 is threadedly mounted in the nozzle hole, and a corresponding portion of the discharge end of the nozzle 11 extends out of the nozzle hole. The aperture of the flow passage in the nozzle 11 at the discharge end portion gradually decreases in the sequential direction. The shape of the second insulating lining 12 is matched with that of the runner, and the second insulating lining is closely attached to the inner side wall of the runner. The region in the second insulating bush 12 forms a flow region, the region corresponding to the inflow end on the flow region communicates with the melting region 5, and the surface communicating with the melting region 5 on the flow region covers the surface communicating with the flow region on the melting region 5, so that all molten metal flows into the nozzle 11, and extrusion molding is facilitated. The extrusion amount of the nozzle 11 is controlled mainly by the pressure of the inert gas entering the melting zone 5 from the gas inlet 7, and the extrusion amount and the extrusion speed are controlled by controlling the magnitude of the pressure.
The first insulating bushing 6 and the second insulating bushing 12 may be ceramic bushings, although in other embodiments other bushings with insulating and insulating properties may be used. The first insulating and heat insulating lining 6 and the second insulating and heat insulating lining 12 are made of ceramic materials, are high-temperature resistant, have smooth surfaces, facilitate wire flowing and are convenient to maintain and manage.
The spray head body 13 may take a cylindrical-like shape having opposing first and second surfaces and side surfaces therebetween. The wire feeding tube 1 can be penetrated from the first surface to be communicated with the melting zone 5, the nozzle 11 is arranged on the second surface, and the anode hole 9 and the air inlet hole 7 are respectively communicated from the side surfaces to be communicated with the melting zone 5.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, it is within the scope of the appended claims and their equivalents to fall within the scope of the invention.

Claims (9)

1. A 3D printing head for a metal wire, the 3D printing head being adapted to melt the wire using a resistor, comprising:
the spray head comprises a spray head body, a spray head body and a spray head cover, wherein a melting cavity is formed in the spray head body, a first insulating and heat-insulating lining is attached to the inner wall of the melting cavity, and a melting interval is formed in the region in the first insulating and heat-insulating lining; the spray head body is respectively provided with a positive hole and a gas inlet hole which are communicated with the melting zone, the positive hole is used for the positive rod to pass through, and the positive hole is provided with a positive rod connector for fixing the positive rod; an air inlet pipe joint is arranged on the air inlet hole and used for fixing an air inlet pipe;
the output end of the wire feeding pipe is communicated with the melting zone, and the input end of the wire feeding pipe extends out of the nozzle body;
the nozzle is arranged on the nozzle body, and a second insulating and heat-insulating lining is attached to the inner wall of the flow passage of the nozzle; the inflow end of the runner is communicated with the melting zone, and the spraying end of the runner is arranged outside the nozzle body;
the spray head comprises a spray head body, a first insulating and heat-insulating lining and a second insulating and heat-insulating lining, wherein the spray head body is provided with a mounting hole, a melting cavity and a nozzle hole which are sequentially communicated, the mounting hole, the melting cavity and the nozzle hole form a penetrating hole penetrating through the nozzle body, and the first insulating and heat-insulating lining is arranged on the inner side wall of the melting cavity;
the surface of the melting cavity, which is communicated with the mounting hole, is a covering surface of the melting cavity; a melting cover is matched with the mounting hole, the melting cover is mounted in the mounting hole through threads, and the melting cover covers the covering surface on the melting cavity; the output end of the wire feeding pipe penetrates through the melting cover and is communicated with the melting zone;
the nozzle is installed in the nozzle hole through threads, and the corresponding part of the spraying end of the nozzle extends out of the nozzle hole.
2. The 3D printing head for metal wires according to claim 1, wherein the wire feeding pipe is provided at a portion outside the head body around a water cooling pipe for heat dissipation.
3. The 3D printing head for metal wire according to claim 1, further comprising a wire feed tube joint;
the melting cover is provided with a joint mounting hole and a wire feeding hole which are mutually communicated, the wire feeding hole is matched with the wire feeding pipe and is communicated with the melting zone, and the wire feeding pipe penetrates through the joint mounting hole and the wire feeding hole and is communicated with the melting zone;
the wire feeding pipe joint is installed in the joint installation hole through threads, and the wire feeding pipe joint is sleeved and fixed with the wire feeding pipe.
4. The 3D printing head for a wire according to claim 1, wherein the region in the second insulating sleeve forms a flow zone, the flow zone communicates with the melting zone at a location corresponding to the inflow end, and a surface of the flow zone communicating with the melting zone covers a surface of the melting zone communicating with the flow zone.
5. The wire-applicable 3D printing head of claim 4, wherein the aperture of the flow channel at the ejection end portion gradually decreases in the direction of sequential communication.
6. The 3D printing head for metal wires according to claim 1, wherein the shape of the melting chamber is a truncated cone or a truncated pyramid, and the aperture of the melting chamber is gradually reduced along the direction of sequential communication.
7. The wire-applicable 3D printing head of claim 1, wherein the first and/or second insulating bushings are ceramic bushings.
8. The wire-applicable 3D printing head of claim 1, wherein the head body has opposing first and second surfaces, and a side surface between the first and second surfaces;
the wire feeding pipe penetrates through the first surface and is communicated with the melting zone, the nozzle is mounted on the second surface, and the anode hole and the air inlet hole are respectively communicated with the melting zone from the side surfaces.
9. The 3D printing nozzle applicable to the metal wire according to claim 1, wherein one ends of the positive hole and the air inlet hole, which are communicated with the melting section, are all arranged on the inner wall of the melting chamber, and avoidance holes corresponding to the positive hole and the air inlet hole are respectively arranged on the first insulating and heat-insulating bushing and are respectively used for communicating the positive hole and the air inlet hole with the melting section.
CN202210065210.3A 2022-01-20 2022-01-20 Be suitable for 3D of wire material and print shower nozzle Active CN114505502B (en)

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CN202210065210.3A CN114505502B (en) 2022-01-20 2022-01-20 Be suitable for 3D of wire material and print shower nozzle

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Application Number Priority Date Filing Date Title
CN202210065210.3A CN114505502B (en) 2022-01-20 2022-01-20 Be suitable for 3D of wire material and print shower nozzle

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CN114505502A CN114505502A (en) 2022-05-17
CN114505502B true CN114505502B (en) 2023-09-22

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Publication number Priority date Publication date Assignee Title
CN106392076A (en) * 2016-06-21 2017-02-15 中国科学院宁波材料技术与工程研究所 3D printing system and print head device thereof
CN108582784A (en) * 2018-05-31 2018-09-28 天津职业技术师范大学 A kind of 3D printing head for material extrusion molding
CN108941568A (en) * 2018-07-13 2018-12-07 西北工业大学 A kind of metal semi-solid melting extrusion increasing material manufacturing spray head
CN109822885A (en) * 2019-02-26 2019-05-31 江西省科学院能源研究所 A kind of 3D printing ejecting device convenient for plastic molten melt conveying
CN210098978U (en) * 2019-06-25 2020-02-21 郑州轻工业学院 3D prints shower nozzle with multistage heating and little molten bath
CN110860691A (en) * 2018-08-28 2020-03-06 蒋锐 3D printing nozzle for deposition extrusion of consumable material of plasma torch molten metal wire
DE102018127931A1 (en) * 2018-11-08 2020-05-14 Deutsches Zentrum für Luft- und Raumfahrt e.V. Process and plant for producing a three-dimensional structure
CN213618373U (en) * 2020-10-20 2021-07-06 中之有限公司 Anti-disturbance 3D printing nozzle

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104014793B (en) * 2014-05-15 2016-01-27 东莞市亚美精密机械配件有限公司 Extruded type metal flow 3D printer

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106392076A (en) * 2016-06-21 2017-02-15 中国科学院宁波材料技术与工程研究所 3D printing system and print head device thereof
CN108582784A (en) * 2018-05-31 2018-09-28 天津职业技术师范大学 A kind of 3D printing head for material extrusion molding
CN108941568A (en) * 2018-07-13 2018-12-07 西北工业大学 A kind of metal semi-solid melting extrusion increasing material manufacturing spray head
CN110860691A (en) * 2018-08-28 2020-03-06 蒋锐 3D printing nozzle for deposition extrusion of consumable material of plasma torch molten metal wire
DE102018127931A1 (en) * 2018-11-08 2020-05-14 Deutsches Zentrum für Luft- und Raumfahrt e.V. Process and plant for producing a three-dimensional structure
CN109822885A (en) * 2019-02-26 2019-05-31 江西省科学院能源研究所 A kind of 3D printing ejecting device convenient for plastic molten melt conveying
CN210098978U (en) * 2019-06-25 2020-02-21 郑州轻工业学院 3D prints shower nozzle with multistage heating and little molten bath
CN213618373U (en) * 2020-10-20 2021-07-06 中之有限公司 Anti-disturbance 3D printing nozzle

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