CN104552944B - A kind of 3D printing dispensing extrusion device that can achieve online alloying - Google Patents

A kind of 3D printing dispensing extrusion device that can achieve online alloying Download PDF

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Publication number
CN104552944B
CN104552944B CN201410792414.2A CN201410792414A CN104552944B CN 104552944 B CN104552944 B CN 104552944B CN 201410792414 A CN201410792414 A CN 201410792414A CN 104552944 B CN104552944 B CN 104552944B
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China
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mixing chamber
extrusion
online
shower nozzle
printing
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CN201410792414.2A
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Chinese (zh)
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CN104552944A (en
Inventor
单忠德
杨立宁
王永威
刘丰
戎文娟
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机械科学研究总院先进制造技术研究中心
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Priority to CN201410792414.2A priority Critical patent/CN104552944B/en
Publication of CN104552944A publication Critical patent/CN104552944A/en
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Abstract

The invention discloses a kind of 3D printing dispensing extrusion device that can achieve online alloying, this device includes online ingredient sector and shower nozzle extruded by motlten metal.Described online ingredient sector is made up of the storage bin no less than, pay-off, mixing chamber, air supply plant, the online material inspection device of molten metals and PC etc..Described motlten metal extrusion shower nozzle has multiple, is all connected with mixing chamber bottom by conveying pipeline, extrusion shower nozzle inside is Screw Extrusion mechanism, it is possible to achieve the controlled in real time extrusion of motlten metal.In work process, this device is first according to 3D printing current layer material information, carry out outfit, mixing, fusing and the on-line checking of raw material metal by online ingredient sector, when molten metals satisfaction requires, extrusion shower nozzle is imported by mixing chamber lower end conveying pipeline, extruded by shower nozzle inner screw extrusion mechanism again, carry out successively scanning and printing and shape.The present invention is reasonable in design, and dispensing, accurately it is adaptable to the on-line mixing of various metals powder/granule and detection, efficiently solves the online alloying of 3D printer and the integral forming of functionally gradient material (FGM) structural member.

Description

A kind of 3D printing dispensing extrusion device that can achieve online alloying

Technical field

The invention belongs to 3D printing field is and in particular to a kind of 3D printing dispensing extrusion that can achieve online alloying fills Put.

Background technology

3D printing is one kind of quick shaping (Rapid Prototyping, RP) technology, and most vitality.This technology Come from the Layered Manufacturing Technology principle of discrete/accumulation, directly driven by three-dimensional CAD model, the method using being gradually increased material Disposably rapid precision manufactureing to realize arbitrarily complicated shape and structural elements or mould shapes.Inwardly overturn from shaping Conventionally manufactured theory, breaches Material removal (car, milling, plane, mill, pincers etc.) method and is forced to shape (forging and stamping, casting powder smelting Gold etc.) method, open manufacturing frontier.This technology has a high integration, and be capable of multiple material quick, Flexible manufacturing, low cost of manufacture, therefore it is best suitable for being applied to the high knot of multi items, small lot, complex structure, the raw material magnitude of value Structure parts manufacture.Based on above feature, 3D printing technique application constantly extends, at present this technology industrial modeling, The fields such as culture and arts, machine-building, Aero-Space, military affairs, building, medical science are obtained for and are widely applied.

At present, based on selective laser sintering (Selective Laser Sintering, SLS), precinct laser fusion (Selective Laser Melting, SLM), laser near-net-shape (Laser Engineering Net Shaping, ) and the existing mature technology such as electron beam selective melting technology (Electron Beam Selective Melting, EBSM) LENS 3D printing equipment be used for the quick shaping of single metal material parts, realizing alloy material, multiple material and having Material gradient structural metal part shaping aspect, has the low problem of complex procedures, high cost, efficiency, cannot realize continuous simultaneously Online dispensing and metalwork integral forming.

Content of the invention

Present invention aim to address disadvantages mentioned above present on prior art, provide a kind of can achieve online alloying and The new 3D printer ejecting device of material gradient structural elements integral forming.

For achieving the above object, the invention provides a kind of can achieve online alloying 3D printing dispensing extrusion device, This device includes online ingredient sector and motlten metal extrusion shower nozzle.Wherein, online ingredient sector includes single or multiple storings Storehouse, the first motor being connected through first shaft coupling and feed screw device, the same agitating device connecting the second motor, metal Material mixing chamber, be distributed in batch mixing chamber outer wall the first subsection heating device, be installed on outside the first subsection heating device first Heat insulation layer, the molten metals on-line measuring device being connected with mixing chamber through conveying pipeline, through appendix and air pressure adjustment With mixing chamber upper end, device wants that the inert gas storage device connecting, reception metal ingredient on-line measuring device send signal reality Now PC of all motor controls etc., this mechanism can achieve online outfit and the composition detection of 3D printing raw material.Motlten metal Extrusion shower nozzle is similarly multiple, is placed in screw rod, the cladding of nozzle cavity including being connected with the 3rd motor by the 3rd shaft coupling In the second subsection heating device of outer nozzle wall, second heat insulation layer etc., realize the controlled extrusion of molten metal material.

Further, described quantity be no less than in the storage bin of store respectively the single of identical or different species or Mixed metal powder/granule, the storing amount of each storage bin is of moderate size it is possible to easily realize stopping.

Further, described mixing chamber is connected with upper end feed screw device by conveying pipeline, has inside mixing chamber Agitating device, this agitating device is connected with upper end second motor by second shaft coupling, controls the second motor belt motor by PC The rotation of dynamic agitating device, makes the indoor solid-state of batch mixing or molten metal are sufficiently mixed.First point of batch mixing chamber outer wall Section heater can realize progressive solution according to batch mixing indoor metal raw material fusing point and quality, and outside the first subsection heating device It is coated with the first heat insulation layer, the effect played protection and prevent heat to scatter and disappear.

Further, in described feed screw device, screw rod is connected with upper end first motor by first shaft coupling, passes through PC controls the first motor to drive the rotation of screw rod and rotational speed regulation, realizes in storage bin raw material metal through under conveying pipeline entrance The precise control of end mixing chamber amount.

Further, described inert gas storage device is connected with barometric control unit and mixing chamber side wall through appendix Logical.And batch mixing interior inert gas environment is controlled by barometric control unit, play atmosphere protection in metal charge fusion process Effect, anti-oxidation.Meanwhile, described feed screw device can prevent noble gases from entering storage bin by mixing chamber.

Further, described molten metals on-line measuring device can be by the interior melting of conveying pipeline Real-time Collection batch mixing Metal sample, and real-time detection, analysis are carried out to its composition, then analysis result is fed back to PC, by PC analysis melting gold Belong to whether composition meets requirement, be such as unsatisfactory for, then carry out feed supplement by controlling corresponding feed screw device, until meet composition will Ask.

Further, the plurality of motlten metal extrusion shower nozzle is all connected with mixing chamber bottom by conveying pipeline, passes through 3rd motor drives screw rod rotation in nozzle cavity, thus the motlten metal importing nozzle cavity is extruded by shower nozzle end.Spray Second subsection heating device of mouth outer wall, according to use demand, equally has progressive solution function.

Brief description

The Figure of description constituting the part of the application is used for providing a further understanding of the present invention, and the present invention shows Meaning property embodiment and its illustrate for explaining the present invention, does not constitute inappropriate limitation of the present invention.In the accompanying drawings:

Fig. 1 shows the overall structure diagram of the present invention;

Fig. 2 shows the schematic diagram of motlten metal extrusion shower nozzle part in the present invention.

In figure:1st, online ingredient sector, 2, motlten metal extrusion shower nozzle, the 3, first motor, 4, storage bin, the 5, first shaft coupling Device, 6, PC, 7, feed screw device, 8, conveying pipeline, 9, agitating device, 10, cable, 11, mixing chamber, the 12, first segmentation adds Thermal, 13, batch mixing chamber outer wall, the 14, second heat insulation layer, 15, molten metals on-line measuring device, 16, air pressure adjusts Regulating device, 17, appendix, 18, inert gas storage device, the 19, the 3rd motor, the 20, the 3rd shaft coupling, 21, screw rod, 22, spray Mouth outer wall, the 23, second subsection heating device, the 24, second heat insulation layer, 25, nozzle cavity, 26, shower nozzle end.

A kind of can achieve online alloying 3D printing dispensing extrusion device it is characterised in that:This device includes joining online Material mechanism (1) and motlten metal extrusion shower nozzle (2);Described online ingredient sector (1) includes the storage bin that quantity is no less than (4), the first motor (3), first shaft coupling (5), feed screw device (7), agitating device (9), mixing chamber (11), the first segmentation Heater (12), batch mixing chamber outer wall (13), the first subsection heating device (12) the first heat insulation layer (14), motlten metal outward Ingredient on-line detection device (15), inert gas storage device (18), barometric control unit (16), PC (6), conveying pipeline (8), Appendix (17), cable (10) etc.;Described motlten metal extrusion shower nozzle (2) is multiple, including by the 3rd shaft coupling (20) with 3rd motor (19) is connected and is placed in the screw rod (21) of nozzle cavity (25), is coated on the second zone heating of outer nozzle wall (22) Device (23), second heat insulation layer (24) etc..

Specific embodiment

A kind of new type nozzle that can achieve online alloying as shown in Figure 1, including online ingredient sector (1) and melting gold Belong to extrusion shower nozzle (2), described online ingredient sector (1) includes quantity and is no less than the storage bin (4) of, controlled by PC (6) Feed screw device (7), can achieve the mixing chamber (11) of metal melting, the first subsection heating device (12), can achieve melting Metal ingredient and the molten metals on-line measuring device (15), connection mixing chamber (11) and the melting gold that feed back to PC (6) Belong to the conveying pipeline (8) of extrusion shower nozzle (2);Described motlten metal extrusion shower nozzle (2) includes nozzle cavity (25), passes through the 3rd shaft coupling The screw rod (21) that device (20) connects and the 3rd motor (19), outer nozzle wall (22) are provided with the second subsection heating device (23), spray Second heat insulation layer (24) is installed outside mouth heater, described mixing chamber (11) and nozzle cavity (25) pass through conveying pipeline (8) connect.In described online ingredient sector (1), storage bin (4) is connected with mixed mixing chamber (11) by feed screw device (7), PC (6) is connected by cable (10) with feed screw device (7) and molten metals on-line measuring device (15), melting gold Belong to ingredient on-line detection device (15) to be connected by conveying pipeline (8) with mixing chamber (11).

With reference to specific embodiment, the present invention is further described:

It is respectively provided with tri- kinds of metal powder materials of A, B, C, PC (6) controls feeding spiro rod as needed in three storage bins (4) By in one or more feeding mixing chamber (11) of tri- kinds of metal powder materials of A, B, C, mixing chamber (11) passes through the first segmentation to device (7) Heater (12) carries out being heated to molten condition to metal powder material, the second Motor drive agitating device (9) stirring molten metal, Realize the molten alloy of various metals powder material;In molten metals on-line measuring device (15) real-time detection mixing chamber (11) The composition of motlten metal, and result is fed back to PC (6), PC (6) adjusts corresponding feed screw device according to feedback result (7) continue feeding, molten metals meet the requirements in mixing chamber (11), realize alloying on-line monitoring;By inertia The interior inert gas shielding environment of gas regulation mixing chamber (11).The interior motlten metal of mixing chamber (11) flows into lower end nozzle cavity (25), screw rod (21) provides power by the flowing that the 3rd motor (19) is driven to motlten metal, by motlten metal from shower nozzle end End (26) sprays, until realizing functionally gradient material (FGM) structural member integral forming;Outer nozzle wall (22) is provided with the second subsection heating device (23) and the second heat insulation layer (24), can avoid nozzle clogging because motlten metal solidifies.

The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for the skill of this area For art personnel, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, made any repair Change, equivalent, improvement etc., should be included within the scope of the present invention.

Claims (7)

1. a kind of 3D printing dispensing extrusion device that can achieve online alloying, including:
Online ingredient sector (1), described online ingredient sector (1) includes storage bin (4), the first motor that quantity is no less than (3), first shaft coupling (5), feed screw device (7), agitating device (9), mixing chamber (11), the first subsection heating device (12), the first heat insulation layer (14), molten metals are online outward for batch mixing chamber outer wall (13), the first subsection heating device (12) Detection means (15), inert gas storage device (18), barometric control unit (16), PC (6), conveying pipeline (8), appendix (17), cable (10);Feed screw device (7) is to drive, by the first motor (3), the spiral shell that lower end connects through first shaft coupling (5) Bar rotates;Mixing chamber (11) is connected with upper end feed screw device (7) by conveying pipeline (8);Have inside mixing chamber (11) Agitating device (9), this agitating device (9) is connected with upper end second motor by second shaft coupling;PC (6) and feeding spiro rod Device (7) and molten metals on-line measuring device (15) pass through cable (10) and connect;Molten metals on-line checking fills Put (15) to be connected by conveying pipeline (8) with mixing chamber (11);Inert gas storage device (18) is through appendix (17) and air pressure Adjusting means (16) is connected with mixing chamber (11) side wall;Described first subsection heating device (12) is located at batch mixing chamber outer wall (13) Outside, and it is coated with the first heat insulation layer (14);
Motlten metal extrusion shower nozzle (2), described motlten metal extrusion shower nozzle (2) is multiple, including by the 3rd shaft coupling (20) Be connected with the 3rd motor (19) screw rod (21) being placed in nozzle cavity (25), the second segmentation being coated on outer nozzle wall (22) is added Thermal (23), the second heat insulation layer (24).
2. according to claim 1 a kind of can achieve online alloying 3D printing dispensing extrusion device it is characterised in that: Described quantity be no less than in the storage bin (4) of store respectively the single of identical or different species or mixed metal powder/ Granule.
3. according to claim 1 a kind of can achieve online alloying 3D printing dispensing extrusion device it is characterised in that: First subsection heating device (12) of described batch mixing chamber outer wall (13) can be according to the interior raw material metal fusing point of mixing chamber (11) and matter Amount realizes progressive solution.
4. according to claim 1 a kind of can achieve online alloying 3D printing dispensing extrusion device it is characterised in that: Enter the raw material quality of lower end mixing chamber (11) by the rotating speed of adjusting screw rod come precise control by storage bin (4).
5. according to claim 1 a kind of can achieve online alloying 3D printing dispensing extrusion device it is characterised in that: The interior inert gas environment of mixing chamber (11) is controlled by barometric control unit (16), thus playing gas in metal charge fusion process The effect of atmosphere protection, meanwhile, described feed screw device (7) can prevent noble gases from entering storage bin by mixing chamber (11) (4).
6. according to claim 1 a kind of can achieve online alloying 3D printing dispensing extrusion device it is characterised in that: Described molten metals on-line measuring device (15) can pass through the interior motlten metal sample of conveying pipeline Real-time Collection mixing chamber (11), And its composition is carried out detecting, analyzes, then result is fed back to PC (6), whether full by PC (6) analysis of molten metals Foot requires, and is such as unsatisfactory for, then carries out feed supplement by controlling corresponding feed screw device (7), until meeting component requirements.
7. according to claim 1 a kind of can achieve online alloying 3D printing dispensing extrusion device it is characterised in that: The plurality of motlten metal extrusion shower nozzle (2) is all connected with mixing chamber (11) bottom by conveying pipeline (8), by the 3rd motor (19) drive screw rod (21) rotation, thus the motlten metal that will import nozzle cavity (25) is extruded by shower nozzle end (26), nozzle Second subsection heating device (23) of outer wall (22), according to use demand, equally has progressive solution function.
CN201410792414.2A 2014-12-19 2014-12-19 A kind of 3D printing dispensing extrusion device that can achieve online alloying CN104552944B (en)

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