CN106623940B - A kind of liquid metal ink jet valve - Google Patents

A kind of liquid metal ink jet valve Download PDF

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Publication number
CN106623940B
CN106623940B CN201611229488.0A CN201611229488A CN106623940B CN 106623940 B CN106623940 B CN 106623940B CN 201611229488 A CN201611229488 A CN 201611229488A CN 106623940 B CN106623940 B CN 106623940B
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China
Prior art keywords
liquid metal
chamber
heating
ink jet
liquid
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CN201611229488.0A
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CN106623940A (en
Inventor
何志祝
林聚
刘静
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Beijing Dream Ink Technology Co Ltd
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Beijing Dream Ink Technology Co Ltd
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Priority to CN201611229488.0A priority Critical patent/CN106623940B/en
Publication of CN106623940A publication Critical patent/CN106623940A/en
Priority to PCT/CN2017/118634 priority patent/WO2018121530A1/en
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    • 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
    • B22F3/00Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/003Apparatus, e.g. furnaces
    • 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
    • B22F3/00Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/115Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces by spraying molten metal, i.e. spray sintering, spray casting

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Ink Jet (AREA)

Abstract

The present invention relates to inkjet-printing device fields, disclose a kind of liquid metal ink jet valve, including:Heating cavity has heating chamber;The upper end is equipped with metal powder and liquid metal import;It is provided with electromagnetic actuator device and heating device, heating device melts metal powder or preheating liquid metals ink, and electromagnetic actuator device drives liquid metal ink motion;Liquid metal cavity, liquid metal cavity are equipped with liquid metal chamber and nozzle;And insulation pushing ram and feed back control system, the one end for the pushing ram that insulate are stretched into the liquid metal chamber, the other end is connect with reciprocal step device, and feed back control system controls the movement of reciprocal step device according to the position of liquid metal;Wherein, liquid metal chamber is connected to heating chamber.Liquid metal powder is melted and is driven by electromagnetic actuator device by the present invention, is released by insulation catch bar, overcomes liquid metal defect present in ink jet printing process, realizes that liquid metal is continuous, quick and stablize ink-jet.

Description

A kind of liquid metal ink jet valve
Technical field
The present invention relates to inkjet-printing device fields, more particularly to a kind of liquid metal ink jet valve
Background technology
Printed electronic has become the important component of electronic manufacturing technology, and liquid metal is with its high conductivity, system Take simple, without post-processing the advantages of has occupied consequence in printed electronic.
The method of existing printing liquid metal mainly has contact impact system and atomized spray processes;Contact impact system goes out Black speed is relatively slow, be suitable only for printing small lot, fining circuit;Atomized spray processes need pre-production mask, compared with For inconvenience.Speed out of ink can be effectively promoted using touchless ink ejecting method, manufactures electronic circuit more quickly, and be not necessarily to Using template, however liquid metal has prodigious difference, common ink jet valve or inkjet print head to be difficult to conventional inks property Meets the needs of liquid metal ink-jet.The viscosity of liquid metal is very low, and surface tension is big, and density is big, and electric conductivity is outstanding, and a variety of Material wetability is poor, and SECTIONMelting points also need to heat higher than the metal alloy of room temperature, and easy tos produce oxide impurity influence ink-jet Quality.Therefore it to use ink ejecting method to print liquid metal, need the ink jet valve for these problems design new construction or ink-jet Device.
Invention content
(1) technical problems to be solved
The object of the present invention is to provide a kind of liquid metal ink jet valves, and because liquid metal viscosity is very low, surface tension is big, close Degree is big, the characteristics such as electric conductivity is outstanding, overcomes liquid metal defect present in ink jet printing process, realizes that liquid metal connects Continuous, quick and stable ink-jet.
(2) technical solution
In order to solve the above technical problem, the present invention provides a kind of liquid metal ink jet valves, including:
Heating cavity, the heating cavity have heating chamber;The upper end of the heating chamber is equipped with metal powder import; Electromagnetic actuator device and heating device are equipped in the heating chamber, the heating device makes it melt for heating metal powder Liquid metal ink is turned to, the electromagnetic actuator device is for driving the liquid metal ink motion;
Liquid metal cavity, the liquid metal cavity are equipped with liquid metal chamber and set on the liquid metal chambers Nozzle;And
Insulate pushing ram and feed back control system, and one end of the insulation pushing ram is stretched into the liquid metal chamber, The other end is connect with reciprocal step device, position of the feed back control system detection liquid metal in the liquid metal chamber It sets, and controls the movement of reciprocal step device according to its position;
Wherein, the liquid metal chamber is connected to the heating chamber.
Wherein, the heating device is that several metal cylinders and insulation web plate collectively form.
Wherein, the attemperator in the outside of the heating cavity.
Wherein, further include filter device in the heating chamber lower end.
Wherein, further include level monitoring and pressure control device in the heating chamber, for monitoring the heating chamber Indoor liquid metal ink level height simultaneously controls the heating chamber internal pressure size.
Wherein, it is additionally provided with the bubble with negative pressure device on the heating chamber and the liquid metal chamber interface channel Except chamber, the bubble removal chamber is integrated with liquid metal chamber or split settings.
Wherein, the liquid metal intracavitary is coated with coating.
Wherein, the liquid metal cavity is additionally provided with liquid metal recycling and clean room, liquid metal recycling with it is clear Be equipped with driving device and control valve block in clean room, liquid metal recycling in clean room respectively with the bubble removal chamber It is connected with the liquid metal chamber, the control valve block is set in liquid metal chamber, and the driving device is described for driving Liquid metal recycles and cleans indoor liquid metal ink.
Wherein, the reciprocal step device is cam link mechanism, air rammer link mechanism or electromagnet pushing mechanism.
Wherein, the feed back control system is resistor detecting device or current sensing means, the feed back control system ring Around the insulation pushing ram, one group of sensor setting, can be at nozzle or other positions add array biography at insulation pushing ram Sensor.
(3) advantageous effect
A kind of liquid metal ink jet valve provided by the invention, using heating devices heat and melts liquid metal, and electrical measurement is driven Dynamic device drives liquid metal, insulation pushing ram to give liquid metal kinetic energy and release, and overcomes liquid metal in inkjet printing Existing defect in the process, realize liquid metal it is continuous, it is quick and stablize ink-jet.
Description of the drawings
Fig. 1 is a kind of schematic diagram of liquid metal ink jet valve embodiment 1 of the invention;
Fig. 2 is a kind of schematic diagram of liquid metal ink jet valve embodiment 2 of the invention;
Fig. 3 is a kind of schematic diagram of liquid metal ink jet valve embodiment 3 of the invention.
In figure, 1, heating cavity;2, insulate pushing ram;3, reciprocal step device;4, nozzle;5, feed back control system;6、 Liquid metal recycles and clean room;7, valve block is controlled;8, liquid metal chamber;9, heating chamber;10, electromagnetic actuator device;11、 Heating device;12, filter device;13, attemperator;14, level sensing and pressure control device;15, bubble removal chamber; 16, permanent magnet;17, electromagnet;18, air inlet;19, piston;20, resetting spring;21, cam link mechanism.
Specific implementation mode
With reference to the accompanying drawings and examples, the specific implementation mode of the present invention is described in further detail.Following instance For illustrating the present invention, but it is not limited to the scope of the present invention.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected;It can Can also be electrical connection to be mechanical connection;It can be directly connected, can also indirectly connected through an intermediary, Ke Yishi Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition Concrete meaning in invention.
Embodiment 1:
As shown in Figure 1, the present invention discloses a kind of liquid metal ink jet valve, including:Heating cavity 1, the heating cavity 1 have There is heating chamber 9;The upper end of the heating chamber 9 is equipped with metal powder import;Electromagnetic drive is equipped in the heating chamber 9 to fill 10 and heating device 11 are set, for the heating device 11 for heating metal powder, it is liquid metal ink, the electricity so that it is melted Magnetic drive unit 10 is for driving the liquid metal ink motion;
Liquid metal cavity, the liquid metal cavity are equipped with liquid metal chamber 8 and are set to the liquid metal chamber 8 Nozzle 4;And
Insulate pushing ram 2 and feed back control system 5, and the liquid metal chamber 8 is stretched into one end of the insulation pushing ram 2 Interior, the other end is connect with reciprocal step device 3, and the feed back control system 5 detects liquid metal in the liquid metal chamber 9 In position, and control according to its position the movement of reciprocal step device 2;
Wherein, the liquid metal chamber 8 is connected to the heating chamber 9.
Specifically, liquid metal cavity and heating cavity can be structure as a whole, or separate structure utilizes pipeline It is tightly connected.The liquid metal that the present invention uses can be fusing point in 400 DEG C of low-melting-point metal simple substance or metal alloy below, The either metal simple-substance or the metal alloy mixture with nanometer or micron particles with electric action respectively.According to liquid The viscosity of state metal is very low, and surface tension is big, and the characteristic that density is big and electric conductivity is outstanding, liquid metal powder is by heating chamber 9 The metal powder import of upper end enters, and heated device 11 heats and is melted into liquid metal ink, and by electromagnetic actuator device 10 make liquid metal ink by 9 displacement of heating chamber to liquid metal chamber, the driving insulation pushing ram of reciprocal step device 3 2 move back and forth, and give the liquid metal ink kinetic energy in liquid metal chamber 8, and release nozzle 4.The reciprocal step of the present embodiment Cam link mechanism 21 is used into device 3, is driven using stepper motor, ensures that each rotational angle of cam is constant, and then ensure Promote the throw of lever constant.Because liquid metal ink has prodigious surface tension, only it is difficult to flow in the duct by gravity It is dynamic, but liquid metal ink also has good electric conductivity, and conductor fluid understands movement under force in magnetic field, therefore pass through electromagnetism Driving device 10, which applies electromagnetic field appropriate, effectively to push liquid metal ink to flow to nozzle.The work of feed back control system 5 It is according to controlling reciprocal step device 2 with for position of the detection liquid metal in liquid metal chamber 9, and with metal sites Movement, and then control the movement of insulation control-rod 2.It is detected to avoid influencing feedback, the material of pushing ram and nozzle should be exhausted Edge, ceramic material generally can be used.
A kind of liquid metal ink jet valve provided by the invention, surface tension low according to the fusing point of liquid metal are greatly and conductive Property excellent characteristic, using heating devices heat and melt liquid metal, electrical measurement driving device drives liquid metal, insulation to promote Bar is given liquid metal kinetic energy and is released, and liquid metal defect present in ink jet printing process is overcome, and realizes liquid gold Belong to continuous, quick and stablizes ink-jet.
Wherein, the heating device 11 is that several metal cylinders and insulation web plate collectively form.Such saturation type adds Thermal, when being air in web plate gap of insulating, entire heating device 11 is non-conductive;Between metal powder fills insulation web plate When gap, heating device 11 is conductive, and electric current is generated between metal powder and metal powder self-heating and melt to obtain liquid gold Belong to ink, this method improves the efficiency of heating surface compared with electric heating piece heats, reduces equipment total power consumption.Specifically, heating device 11 in the top of electromagnetic actuator device 10, and the liquid metal ink of thawing is through 10 directed movement of electromagnetic actuator device.
Wherein, the attemperator 13 in the outside of heating cavity 1 ensures that the metal after being heated in ink jet process keeps liquid.
Wherein, further include filter device 12 in 9 lower end of the heating chamber, filter device 12 is and liquid metal ink Wetability is good and has the web plate of porous structure, such as porous ceramics, porous nanometer material, cellulose acetate film or PA membrane Deng should not use web medium;The liquid metal ink melted by metal powder may contain corresponding metal oxide Or other impurities, it can be removed by filter device;Filter device 12 can be taken off replacing.
Wherein, further include level monitoring and pressure control device 14 in the heating chamber 9, for monitoring the heating Liquid metal ink level height in chamber 9 simultaneously controls 9 internal pressure size of the heating chamber.Specifically, because close In the heating chamber 9 closed, it is liquid that metal powder is melted by solid-state, can lead to the pressure change in heating chamber 9, so needing By monitoring liquid level, internal pressure value is adjusted, to prevent pressure value excessive, by liquid metal ink extrusion nozzle 4, in this way It liquid metal ink may be implemented is driven and is stablized by electromagnetic actuator device 10 to add in nozzle 4 without flowing directly out.Liquid Position monitoring is set to the top of heating chamber 9 with pressure control device 14, facilitates the pressure in release heating chamber 9.
Wherein, it is additionally provided with the bubble with negative pressure device on the heating chamber 9 and 8 interface channel of liquid metal chamber Chamber 15 is removed, the bubble removal chamber 15 is integrated with liquid metal chamber 8 or split settings.Specifically, bubble removal Certain negative pressure is carried in chamber 15, can liquid metal ink by when make bubbles burst therein to eliminating bubble in order to avoid Influence ink-jet effect.
Wherein, it is coated with coating in the liquid metal chamber 8, coating can improve liquid metal ink and liquid metal chamber Wetability between room 8 makes liquid metal ink be more easy to flow, such as nano metal material, it is possible to use the structures such as micro-channel Improve liquid metal flows, under normal circumstances liquid metal ink be gallium or gallium-base alloy, at this time coating can be used gallium oxide, To reduce corrosion, wear of the metallic ink to other component, equipment life is improved.
Wherein, the liquid metal cavity is additionally provided with liquid metal recycling and clean room 6, liquid metal recycling with it is clear Be equipped with driving device and control valve block 7 in clean room 6, liquid metal recycling in clean room 6 respectively with the bubble removal Chamber 15 and the liquid metal chamber 8 connection, the control valve block 7 are set in liquid metal chamber 8, and the driving device is used It is recycled and the liquid metal ink in clean room 6 in driving the liquid metal.As shown in Figure 1, when ink jet valve works normally, The control valve block 7 on the right is closed, and the control valve block 7 on the left side is opened, and liquid metal chamber 8 is made only to connect with bubble removal chamber 15 It connects;When needing cleaning nozzle 4, the control valve block 7 on the right is opened, and the control valve block 7 on the left side is closed, and will be sprayed using driving device Liquid metal ink between mouth 4 and two control valve blocks 7 is sent to bubble removal chamber 15, and can be continuing with, for a long time not Nozzle 4 can be cleaned using air-flow using when ink jet valve, removes remaining metallic ink.Driving device can be small-scale liquid Pump, electromagnetic actuator device or other driving devices.Threeway valve arrangement can also be used to substitute above-mentioned two control valve 7.
Wherein, the feed back control system 5 is resistor detecting device or current sensing means, the feed back control system ring Around the insulation pushing ram, one group of sensor setting, can be at nozzle or other positions add array biography at insulation pushing ram Sensor, the feed back control system 5 have sealing function simultaneously.It is that feedback control fills using the advantage of cam link mechanism 21 Setting 5 and detecting can allow cam to immediately freeze at current location, reliability higher when situation out of ink is abnormal.
A kind of workflow of liquid metal ink jet valve of the present invention is as follows:
Metal powder is added in heating device 11, heating device 11 is detected by beginning to warm up and making after metal powder Metal powder, which melts, becomes liquid metal ink, and electromagnetic actuator device 10 drives liquid metal ink fixed by additional electromagnetic field To movement, when by bubble removal chamber 8, due to the effect of negative pressure, the bubble in liquid metal ink is removed.When needing ink-jet When, it opens left side and controls valve block 7, close right side and control valve block 7;Feed back control system 5 detects the position of liquid metal and control Stepper motor driving cam link mechanism 21 makes insulation pushing ram 2 decline, and gives the liquid metal ink in liquid metal chamber 8 Kinetic energy makes it be pushed out nozzle 4;It after ink-jet, closes left side and controls valve block 7, open right side and control valve block 7, use drive Liquid metal ink between two valve blocks and in nozzle 4 is drawn into bubble removal chamber 15 by dynamic device, recycles ink To ensure that next time uses.
Embodiment 2:
The present embodiment is substantially the same manner as Example 1, brief for description, during the description of the present embodiment, no longer Technical characteristic same as Example 1 is described, only illustrates the present embodiment difference from Example 1:
It adsorbs or repels as shown in Fig. 2, the reciprocal step device 3 of the present embodiment is electromagnet 17, on insulation pushing ram 2 End is equipped with permanent magnet 16, and 16 top of permanent magnet has equipped with electromagnet 17, and the current direction of conducting wire on iron core, control are around in by changing The magnetic direction of electromagnet 17 processed, and then the attraction and repulsion of permanent magnet 16 and electromagnet 17 are controlled, control insulation pushing ram 2 Raising and lowering.
Embodiment 3:
The present embodiment is substantially the same manner as Example 1, brief for description, during the description of the present embodiment, no longer Technical characteristic same as Example 1 is described, only illustrates the present embodiment difference from Example 1:
As shown in figure 3, the reciprocal step device 3 of the present embodiment is air rammer link mechanism, in 2 upper end of insulation pushing ram Equipped with piston, insulation pushing ram 2 is wrapped resetting spring 20, and piston 19 is encapsulated in a shell, and shell is equipped with air inlet Mouth 18 can be such that piston declines, and then control insulation pushing ram 2 when needing ink-jet by be pumped into air toward air inlet 18 Decline;At the end of ink-jet, air inlet 18 is connected to air, and insulation pushing ram 2 rises due to the effect of resetting spring 20.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.

Claims (8)

1. a kind of liquid metal ink jet valve, which is characterized in that including:
Heating cavity (1), the heating cavity (1) have heating chamber (9);The upper end of the heating chamber (9) is equipped with metal Powder inlet;Electromagnetic actuator device (10) and heating device (11), the heating device (11) are equipped in the heating chamber (9) For heating metal powder, it is liquid metal ink so that it is melted, and the electromagnetic actuator device (10) is for driving the liquid Metallic ink moves;
Liquid metal cavity, the liquid metal cavity are equipped with liquid metal chamber (8) and are set to the liquid metal chamber (8) Nozzle (4);And
Insulate pushing ram (2) and feed back control system (5), and the liquid metal chamber is stretched into one end of the insulation pushing ram (2) In room (8), the other end is connect with reciprocal step device (3), and the feed back control system (5) detects liquid metal in the liquid Position in metal chamber (9), and according to the movement of the reciprocal step device (3) of its position control;
Wherein, the liquid metal chamber (8) is connected to the heating chamber (9);
It is additionally provided with the bubble removal with negative pressure device on the heating chamber (9) and the liquid metal chamber (8) interface channel Chamber (15), the bubble removal chamber (15) is integrated with liquid metal chamber (8) or split settings;
The liquid metal cavity is additionally provided with liquid metal recycling and clean room (6), the liquid metal recycling and clean room (6) In be equipped with driving device and control valve block (7), liquid metal recycling in clean room (6) respectively with the bubble removal chamber Room (15) and the liquid metal chamber (8) connection, the control valve block (7) are set in liquid metal chamber (8), the driving Device is used to drive the liquid metal recycling and the liquid metal ink in clean room (6).
2. liquid metal ink jet valve as described in claim 1, which is characterized in that the heating device (11) is several round metals Column and insulation web plate collectively form.
3. liquid metal ink jet valve as described in claim 1, which is characterized in that the outside of the heating cavity (1), which is equipped with, to be protected Warm device (13).
4. liquid metal ink jet valve as described in claim 1, which is characterized in that further include in the heating chamber (9) lower end Filter device (12).
5. liquid metal ink jet valve as described in claim 1, which is characterized in that interior in the heating chamber (9) further includes liquid Position monitoring and pressure control device (14), for monitoring the liquid metal ink level height in the heating chamber (9) and controlling Make the heating chamber (9) internal pressure size.
6. liquid metal ink jet valve as described in claim 1, which is characterized in that be coated with plating in the liquid metal chamber (8) Layer.
7. liquid metal ink jet valve as described in claim 1, which is characterized in that the reciprocal step device (3) connects for cam Linkage (21), air rammer link mechanism or electromagnet pushing mechanism.
8. liquid metal ink jet valve as described in claim 1, which is characterized in that the feed back control system (5) is examined for resistance Device or current sensing means are surveyed, the feed back control system (5) is around the insulation pushing ram (2), one group of sensor setting At insulation pushing ram (2), array sensor is added at the nozzle (4).
CN201611229488.0A 2016-12-27 2016-12-27 A kind of liquid metal ink jet valve Active CN106623940B (en)

Priority Applications (2)

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PCT/CN2017/118634 WO2018121530A1 (en) 2016-12-27 2017-12-26 Liquid metal ink jet valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201611229488.0A CN106623940B (en) 2016-12-27 2016-12-27 A kind of liquid metal ink jet valve

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CN107471632B (en) * 2017-08-22 2018-10-16 北京梦之墨科技有限公司 A kind of manufacturing equipment and manufacturing method of metal and nonmetallic compound increasing material
CN108326309A (en) * 2018-04-08 2018-07-27 北京梦之墨科技有限公司 Printer ink cartridge and printing equipment
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CN110774754B (en) * 2018-07-31 2023-06-30 北京梦之墨科技有限公司 Liquid metal ink supply system and ink supply method
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WO2018121530A1 (en) 2018-07-05

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Denomination of invention: Liquid metal ink jet valve

Effective date of registration: 20200703

Granted publication date: 20180810

Pledgee: Zhongguancun Beijing technology financing Company limited by guarantee

Pledgor: BEIJING DREAM INK TECHNOLOGY Co.,Ltd.

Registration number: Y2020990000710