CN208760199U - A kind of liquid metal ink feeding system - Google Patents
A kind of liquid metal ink feeding system Download PDFInfo
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- CN208760199U CN208760199U CN201821219887.3U CN201821219887U CN208760199U CN 208760199 U CN208760199 U CN 208760199U CN 201821219887 U CN201821219887 U CN 201821219887U CN 208760199 U CN208760199 U CN 208760199U
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Abstract
The utility model relates to a kind of liquid metal ink feeding systems, the liquid metal ink feeding system include liquid metal print cartridge, temperature-controlling module, life counter component, oxide test suite, Liquid level component, pressure control component, reduction ink road, print head using above-mentioned ink feeding system overcome traditional liquid metallic print unstable quality the problem of, improve printing line width stability.
Description
Technical field
The utility model relates to a kind of ink feeding system more particularly to a kind of ink supply of liquid metal electronic circuit printer
System.
Background technique
It with being constantly progressive for printed electronics, comes into being by the conductive fluid of representative of liquid metal, so that beating
Printed-circuit cables production liquid metal flexible electronic circuit becomes possibility, has not only changed previous traditional PCB (printed circuit board)
Hard electronic circuit manufacturing mode processed, also significantly reduces electronic circuit manufacturing time and cost.Liquid metal printing technique exists
There is advantageous advantage in the quick manufacture of the electronic devices such as flexible circuit, PCB, antenna, there is very wide application
Prospect.
In the printing of existing liquid metal, liquid metal ink mainly using self gravity as printing driving force, is relied on
Liquid metal realizes that continuous out of ink and route is printed to the infiltration of base material and adhesion strength.
However, (1) is constantly being reduced with the liquid level of liquid metal ink, printing driving force becomes smaller, and ink amount will reduce,
The conducting wire width printed just will appear inconsistent；(2) liquid metal flows are influenced by temperature larger, generally with
Temperature increase mobility can improve, otherwise be deteriorated, when ambient temperature changes, liquid metal flows will be sent out
Changing, amount out of ink can change；(3) over time, the content of oxide gradually increases in liquid metal ink,
Oxide is more, and liquid metal flows can be deteriorated, and amount out of ink also will receive influence；(4) existing beating by flow by gravity
India side formula cannot carry out accurate flow control to liquid metal, the stability of ink feeding system itself and print the one of line width
Cause property is difficult to be guaranteed；(5) when printing stopping, the gravity of metallic ink will lead to it again and leak at nib, both waste
Liquid metal material influences print performance again.
Thus, existing ink feeding system greatly limits the scope of application of conventional liquid metallic print technology.
Summary of the invention
Technical problem to be solved in the utility model is to overcome the problems, such as traditional liquid metallic print unstable quality, is mentioned
The stability of height printing line width, is especially improved in terms of the liquid metal ink feeding system of printer, specifies ink supply system
The boot sequence of the Starting mode of system and each subsystem.
In order to solve the above-mentioned technical problem, the technical solution adopted in the utility model is:
A kind of liquid metal ink feeding system, including liquid metal print cartridge, temperature-controlling module, life counter component, oxidation
Object test suite, Liquid level component, pressure control component, reduction ink road, print head；Liquid metal print cartridge passes through two respectively
The different black pipe of root is connected to reduction ink road and oxide test suite, connects pressure control component by tracheae；Liquid level
The venting connector and ink supply connector of component are directly connected in liquid metal print cartridge, are directly contacted with liquid metal, and gravity passes
Sensor is connected to the lower surface of liquid metal print cartridge；Temperature-controlling module and life counter component are connected to liquid metal print cartridge
On outer surface.
Wherein, liquid metal print cartridge is also equipped with liquid metal ink box cover, and tracheae, venting connector, ink supply connector are separately connected
In on liquid metal ink box cover.
Wherein, black pipe is connected on the side wall of liquid metal print cartridge.
Wherein, pressure control component is electric pneumatic source, to realize the supply of air pressure.
Wherein, life counter component is timing chip, is directly installed on liquid metal print cartridge.
The beneficial effects of the utility model are:
Control of the liquid metal ink feeding system by control and overall work sequence respectively to various components, efficient and height
Quality completes the whole printing process of liquid metal.
Detailed description of the invention
Fig. 1 is the liquid metal ink feeding system schematic diagram of the utility model；
Fig. 2 is the ink supply method schematic diagram of the liquid metal ink feeding system of the utility model；
Fig. 3 A is the temperature-controlling module schematic diagram of the liquid metal ink feeding system of the utility model；
Fig. 3 B is the control method schematic diagram of the temperature-controlling module of the liquid metal ink feeding system of the utility model；
Fig. 4 A, 4B are that two kinds of the oxide content test suite of the liquid metal ink feeding system of the utility model are specific real
Apply schematic diagram；
Fig. 5 is the Liquid level component diagram of the liquid metal ink feeding system of the utility model；
Fig. 6 is the pressure control component diagram of the liquid metal ink feeding system of the utility model；
Fig. 7 is the reduction ink road schematic diagram of the liquid metal ink feeding system of the utility model；
Appended drawing reference: 1- gravity sensor, 2- liquid metal print cartridge, 3- venting connector, 4- ink supply connector, 5- check valve,
6- filter, 7- ink-suuplying pump, 8- venting pump, 9- ink reservoir, 10- ink pipe, 13- negative pressure air pump, 14- positive pressure air pump, 15- pressure stabilizing gas
Bottle, 16- valve block, 17- solenoid valve, 18- tracheae, 19- pressure control board, 20- baroceptor, 21- control circuit, 22- are big
Gas communication port, 24- restore filter, 25,28,33- ink pipe, 26,27- female Luer, 29,32- pagoda connector, 30- oxide
Solution is removed, 31- is reduced liquid metal, 34- annular knurl connector, 35- print head, 36,37,38,40,42- metal annular knurl connector,
39,41- pagoda connector, 44- liquid metal ink box cover, 11,50- test pond, 12- viscosity measuring instrument, 43- female Luer, 44- liquid
State metal ink box cover, 47- resistance measuring instrument, 45,48- test pond lid, 46, the tested liquid metal of 49-, 54- heating device, 55-
Temperature measuring equipment, 56- refrigerating plant, 57- control device.
Specific embodiment
The utility model is further described with reference to the accompanying drawings and examples.
Referring to Fig. 1, specific embodiment show a kind of liquid metal ink feeding system, including liquid metal print cartridge 2, temperature
Control assembly, life counter component, oxide test suite, Liquid level component, pressure control component, reduction ink road, printing
Head；Liquid metal print cartridge 2 is connected to reduction ink road and oxide test suite by two different black pipes respectively, and passes through
Tracheae 18 connects pressure control component；The venting connector 3 and ink supply connector 4 of Liquid level component are directly connected in liquid metal ink
In box 2, directly contacted with liquid metal, gravity sensor 1 is connected to the lower surface of liquid metal print cartridge 2；Temperature control group
Part and life counter component are connected on the outer surface of liquid metal print cartridge 2.
Liquid metal print cartridge 2 is also equipped with liquid metal ink box cover 44, and tracheae 18, venting connector 3, ink supply connector 4 are connected to
On liquid metal ink box cover 44.The box cover of liquid metal print cartridge ensure that the sealed connection of other components and its, it is ensured that
The degree and leakproofness convenient for disassembly and assembly of liquid metal print cartridge entirety.
Wherein, the liquid metal used is also known as low-melting-point metal comprising fusing point is in 300 degrees Celsius of eutectics below
Put metal simple-substance, low-melting point metal alloy or by liquid metal simple substance/low-melting point metal alloy and metal nanoparticle and fluid
The electrical-conductive nanometer fluid that dispersant is formed.More specifically, when selecting the electrical-conductive nanometer fluid, fluid dispersion is excellent
It is selected as ethyl alcohol, propylene glycol, glycerine, polyvinylpyrrolidone, dimethyl silicone polymer, polyethylene glycol, poly-methyl methacrylate
One of ester.In some embodiments, low-melting point metal alloy ingredient may include in gallium, indium, tin, zinc, silver, copper, iron, nickel etc.
It is one or more.
Preferably, the specific range of choice of liquid metal includes: gallium simple substance, gallium-indium alloy, gallium-indium-tin alloy, the conjunction of gallium tin
Gold, gallium kirsite, gallium indium kirsite, gallium red brass, gallium indium red brass, one or more of.
Two different black pipes for being connected to reduction ink road and oxide test suite are connected to the side of liquid metal print cartridge 2
On wall.Position of the black pipe on side wall can carry out flexible setting according to the position of reduction ink road and oxide test suite.
Pressure control component is electric pneumatic source, to realize the supply of air pressure.
Life counter component is timing chip, is directly installed on liquid metal print cartridge.
Referring to fig. 2, the ink supply method of ink feeding system shown in specific embodiment are as follows:
(1) temperature-controlling module starts, and controlling the operating temperature in liquid metal print cartridge is 21-26 DEG C；
(2) whether life counter component detection liquid metal print cartridge is in normal working time state, if it exceeds just
The normal working time, then ink feeding system upper computer software prompt user replaces print cartridge, if being not above the normal working time,
Then start counting；
(3) oxide content test suite starts, and the liquid metal aspirated in liquid metallic ink box enters in test pond, opens
Begin detection oxide mass percentage C, and gives ink feeding system upper computer equipment numeric feedback, as C > 20%, ink feeding system
Failure, upper computer software prompt user to replace print cartridge, and as C≤20%, life counter component is started counting；
(4) Liquid level component starts, and the liquid level controlled in liquid metal print cartridge is in -0.2mm≤h-h always0
≤ 0.2mm, wherein h is liquid level, h0To recommend liquid level；
(5) pressure control component starts, and the air pressure controlled in liquid metal print cartridge is in pressure stabilizing state；
(6) ink feeding system starts ink supply printing.
The all faulty self-checking function of pressure control component and Liquid level component of the ink feeding system, when pressure control component
Or the continuous working period of Liquid level component is more than 10 minutes, illustrates that the air pressure or liquid level in liquid metal print cartridge are in always
Unstable state, defaults associated component failure, and ink feeding system upper computer software prompts custom system failure.
The normal working time of the life counter component of the ink feeding system is 3 months.
The utility model is defined by ink feeding system to liquid metal printer and its ink supply method, can be made
A series of control assemblies work in order, step by step removal system failure, it is ensured that the job stability of ink feeding system, and lead to
It crosses and starts each system in an orderly manner, ensure that the stability of liquid metal in liquid metal print cartridge, to improve printing line width and beat
Print quality.
Temperature-controlling module and its control method are to guarantee that the print temperature T of liquid metal is in optimal pre- always
If temperature T0。
Referring to Fig. 3 A and 3B, specific embodiment shows a kind of temperature of the temperature-controlling module of liquid metal ink feeding system
Control method is spent, it is default according to liquid metal using heating device 54, refrigerating plant 56, temperature measuring equipment 55 and control device 57
Temperature T0, the 49 print temperature T of liquid metal in liquid metal print cartridge 2 is controlled；Heating device 54, refrigerating plant 56
In the bottom of liquid metal print cartridge 2, directly contacted with liquid metal 49；As T < T0When, start heating device 54, as T > T0When,
Start refrigerating plant 56, works as T=T0When, temperature-controlling module does not work.
According to the attribute of liquid metal, under normal circumstances, preset temperature T0=21-26 DEG C, and in temprature control method
Control device then uses common PID control device.
Heating device 54 and refrigerating plant 56 equally use common form, and heating device 54 is heating rod, polyimides
Any one heating device in heating film and ceramic heating flake；Refrigerating plant 56 be semiconductor chilling plate, water cooling, it is air-cooled in
Any one refrigerating plant.
The main purpose of temprature control method is control print temperature, this is related to the installation site of temperature measuring equipment.Referring to
Fig. 3 A shows a kind of mounting means of temperature measuring equipment 55, is located at the bottom of liquid metal print cartridge 2, at this time temperature measuring equipment 55
It is directly contacted with liquid metal 49, T=Tc+ T ', wherein T is print temperature, TcTo measure temperature, T ' is liquid metal print cartridge 2
Temperature loss between print head 35 is poor, and this measurement method is indirect thermometric, passes through the liquid in measurement liquid metal print cartridge 2
49 temperature of state metal calculates the print temperature of liquid metal in print head 35, and here, T ' is main influenced by ambient temperature, generally
In the case of, environment temperature is lower, and T ' is bigger, otherwise lower；Another mounting means of temperature measuring equipment 55, is not shown in the figure,
Positioned at the inside of print head 35, temperature measuring equipment 55 is equally directly contacted with liquid metal at this time, T=Tc, wherein T is printing temperature
Degree, TcTo measure temperature, this measurement method is direct temperature measurement, is directly obtained by the temperature of liquid metal in measurement print head 35
Obtain its print temperature.In above two thermometric mode, the mode of indirect thermometric does not have the mode of direct temperature measurement accurate, but due to
The preset temperature T of liquid metal0For a temperature range, i.e., 21-26 DEG C, therefore, above two temp measuring method can use.
About the assembling mode in temperature-controlling module, heating device, refrigerating plant and temperature measuring equipment be all made of screw thread or
The mode of the heat-resisting glue sticking of person is fixedly connected on the wall portion of liquid metal print cartridge or the wall portion of print head.
It is worth noting that, temperature-controlling module and its control method are to guarantee the gold of the liquid in liquid metal print cartridge
Belong to and it is accurate to be conducive to ink feeding system so that the amount out of ink of liquid metal keeps stablizing in the suitable temperature convenient for printing always
Flow control.If temperature-controlling module starts repeatedly or continuous working period is too long, illustrate in liquid metal print cartridge
Temperature be unable to reach preset temperature always, then the host computer of ink feeding system may determine that it breaks down, and prompt to use
Family checks.
Life counter component is the premise for guaranteeing liquid metal ink feeding system and working normally, it is ensured that liquid gold in ink feeding system
Category has good quality always.
The accumulative of liquid metal print cartridge uses the time generally at three months or so, has one above each liquid metal print cartridge
A individual anti-forge cipher number needs to operate in upper computer software when user uses new liquid metal print cartridge for the first time
Anti-forge cipher number is manually entered in interface, when user's operation printer starts printing, printer apparatus is in work
In operation mode, the upper computer software of ink feeding system starts timing, works as DE device end, and timing also terminates.When timing reaches three
When a month, anti-forge cipher number failure, upper computer software exit normally can operation interface, prompt user replace print cartridge.
In addition, the oxide content test suite when liquid metal ink feeding system detects the oxide mass hundred in liquid metal print cartridge
When score C > 20%, life counter component equally can prompt user to replace print cartridge by upper computer software.
Life counter module board is mounted on print cartridge bottom, the fixed quadrangle by the way of screw confinement.
Oxide content test suite is mainly realized by following principle to oxide mass percentage in ink feeding system
Measurement: first, with the increase of oxide in liquid metal print cartridge, the principle that the viscosity of liquid metal can become larger therewith, lead to
The viscosity value for measuring tested liquid metal is crossed, converses the size of its oxide mass percentage C indirectly；Second, with liquid
The increase of oxide in state metal print cartridge, the principle that the resistance of liquid metal can become larger therewith, by measuring tested liquid metal
Resistance value, converse the size of its oxide mass percentage C indirectly；Third, with oxide in liquid metal print cartridge
Increase, the principle that the weight of liquid metal can become larger therewith passes through the mass figures for measuring tested liquid metal, converts indirectly
The size of its oxide mass percentage C out；4th, with the increase of oxide in liquid metal print cartridge, phase in liquid metal
With the principle that the electrical parameter of position can change therewith, by measuring corresponding electrical parameter numerical value in tested liquid metal,
Connect the size for conversing its oxide mass percentage C.In above-mentioned principle, tested numerical value is scaled oxide mass percentage
The process of C is completed by the host computer of liquid metal ink feeding system.
It is two kinds of specific embodiments of the utility model, a kind of oxygen of liquid metal ink feeding system referring to Fig. 3 A and 3B
Compound content measuring component, including test pond 11 or 50, test pond lid 45 or 48, measuring instrument 12 or 47, tested liquid metal 46
Or 49 and feedback element；Measuring instrument 12 or 47 is fixedly mounted on test pond lid 45 or 48, and the lower end of measuring instrument 12 or 47 is always
Expose test pond lid 45 or 48 in the upper end of tested liquid metal 46 or 49 in engaged test pond 11 or 50, measuring instrument 12 or 47；
Feedback element is fixed on the upper end of measuring instrument 12 or 47, is coupled the host computer of liquid metal ink feeding system.
The test pond of oxide content test suite actually real-time measurement and feedback are numbers in liquid metal print cartridge 2
According to the two containers are interconnected.Therefore, oxide content test suite further includes suction unit, and suction unit is fixed
It is connected on the side wall of test pond 11 or 50 and by the liquid metal print cartridge 2 of Mo Guanyu liquid metal ink feeding system, from liquid
Liquid metal is aspirated in state metal print cartridge 2 to enter in test pond 11 or 50.
Feedback element can take various forms.For example, feedback element is feed circuit, feed circuit is fixedly connected with measurement
The upper end of instrument 12 or 47 and the host computer of liquid metal ink feeding system feed back the measurement numerical value of measuring instrument 12 or 47.For another example, instead
Feedback component be wireless signal transmitter, wireless signal transmitter be fixed on the upper end of measuring instrument 12 or 47 and send measuring instrument 12 or
47 measurement numerical value wireless signal, the host computer of liquid metal ink feeding system receive the wireless signal.
The measuring instrument of oxide content test suite can also take various forms.For example, referring to Fig. 3 A, in the embodiment
Measuring instrument be viscosity measuring instrument 12, the measuring principle of use is: with the increase of oxide in liquid metal print cartridge, liquid gold
The principle that the viscosity of category can become larger therewith converses its oxidation material by measuring the viscosity value of tested liquid metal indirectly
Measure the size of percentage C.For another example, referring to Fig. 3 B, the measuring instrument in the embodiment is resistance measuring instrument 47, and the measurement of use is former
Reason is: with the increase of oxide in liquid metal print cartridge, the principle that the resistance of liquid metal can become larger therewith, by measuring quilt
The resistance value for surveying liquid metal, converses the size of its oxide mass percentage C indirectly.In addition to this, measuring instrument may be used also
To select weight measurement instrument, pressure measuring instrument, any one in potential measuring instrument.
Measurement numerical value measured by measuring instrument 12 or 47 feeds back to the upper of liquid metal ink feeding system by feedback element
Machine, the host computer of ink feeding system calculate conversion by numerical value and obtain the oxide mass percentage C of tested liquid metal 46 or 49.
Fixed form of the measuring instrument 12 or 47 on test pond lid 45 or 48 is to beat threaded hole on test pond lid 45 or 48
And the fixing tool on conjunction measuring instrument 12 or 47 is realized and is threadedly coupled.
The working principle of Liquid level component is the weight of wholly liquid state metal print cartridge to be measured by gravity sensor, then calculate
Corresponding liquid level out carries out liquid level adjustment further according to demand.
Referring to fig. 4, a kind of Liquid level component of liquid metal ink feeding system, including weight are shown in specific embodiment
Force snesor 1, liquid metal print cartridge 2, venting connector 3, ink supply connector 4, ink-suuplying pump 7, venting pump 8, ink reservoir 9, Mo Guan 10；Gravity
Sensor 1 is located at the lower section of liquid metal print cartridge 2；Venting connector 3 and ink supply connector 4 are located at the top of liquid metal print cartridge 2；For
Pump 7 and venting pump 8 are located in ink reservoir 9, for carrying out ink supply and venting to liquid metal print cartridge 2；Black pipe 10, is connected to ink reservoir
Between 9 and liquid metal print cartridge 2, ink-feed channel and venting channel are formed.In Liquid level component, there are two interconnected
Container, respectively liquid metal print cartridge 2 and ink reservoir 9, be exactly by liquid metal print cartridge 2 liquid level carry out implementing monitoring,
Liquid metal is inputted or exported from ink reservoir 9, to guarantee the continual and steady of liquid level in liquid metal print cartridge 2.
In order to improve the degree of purity of liquid metal in liquid metal print cartridge 2, Liquid level component further includes check valve 5 and mistake
Filter 6, wherein check valve 5 and filter 6 are all set in connection ink reservoir 9 and the black pipe 10 of liquid metal print cartridge 2 is formed by confession
On ink passage.The position of the two can be arranged after the check valve 5 for facilitating operation, filter 6 can be set to flexible choice
Between check valve 5 and ink-suuplying pump 7 or between check valve 5 and ink supply connector 4.
The top of liquid metal print cartridge 2 further includes liquid metal ink box cover 44, and the two cooperates to accommodate liquid metal,
Venting connector 3 and ink supply connector 4 are fixed on liquid metal ink box cover 44 by the way of it can flexibly mount and dismount, such as
It is threadedly coupled.
Gravity sensor 1 is fixed on the lower section of liquid metal print cartridge 2 by the way of gluing.Gravity sensor 1 is general not
It is connect by the way of screws bolts with liquid metal print cartridge 2, because the own gravity of screws bolts itself will affect gravity biography
The measurement result of sensor.
Many sealed connecting components are used in Liquid level component, are provided to guarantee the assembly between each components
And sealing.Female Luer 43 is located at both ends and venting connector 3 and ink supply connector 4 and the liquid gold of check valve 5 and filter 6
Belong to the outer surface connection of ink box cover 44.Pagoda connector is located at two junctions of ink-suuplying pump 7 and venting pump 8 and black pipe 10.
Using Liquid level component be in order to in liquid metal print cartridge liquid level carry out implementing monitoring, ensure that liquid level its
The quality of liquid metal in print cartridge is ensured that in fact.The first step for controlling liquid level is to obtain liquid level, Liquid level group
The host computer of the weight G for the liquid metal print cartridge 2 that part is measured according to gravity sensor 1, ink feeding system can carry out liquid level h
Conversion, with obtain the liquid level h in liquid metal print cartridge 2 carry out real-time control；Reduction formula is h=(G-G0)/ρ sg,
Wherein, h is liquid level, and G is the weight of liquid metal print cartridge 2, G0For weight of the liquid metal print cartridge 2 when vacant, ρ is liquid
Density metal, s are the floor space of liquid metal print cartridge 2, and g is acceleration of gravity.
Then, the host computer of ink feeding system according to liquid level h and recommends liquid level h0Value, control ink-suuplying pump 7 or
Venting pump 8 works；Work as h-h0When < -0.2mm, liquid metal print cartridge 2, which is in, lacks ink-condition, and the host computer of ink feeding system opens
Dynamic ink-suuplying pump 7 conveys liquid metal into liquid metal print cartridge 2；Work as h-h0When > 0.2mm, liquid metal print cartridge 2 is in ink overflow
The host computer starting venting pump 8 of state, ink feeding system exports liquid metal from liquid metal print cartridge 2；As -0.2mm≤h-h0
When≤0.2mm, liquid metal print cartridge 2 is in normal operating conditions, and Liquid level component does not work.
It is worth noting that, the liquid metal ink of heterogeneity has different recommendation liquid level h0, Liquid level
Component is in order to guarantee that the liquid metal in liquid metal print cartridge is in the proper height convenient for printing always, so that liquid metal
Self gravity keep constant, be conducive to the accurate flow control of ink feeding system.If Liquid level component start repeatedly or
Continuous working period is too long, then illustrates that the liquid level in liquid metal print cartridge is unable to reach recommendation height always, then ink feeding system
Host computer may determine that it breaks down, and user is prompted to check.
Pressure control component is to accurately adjust the pressure size inside liquid metal print cartridge, traditional printer ink-providing
There is no setting pressure control components for system.
Referring to Fig. 5, a kind of pressure control component of liquid metal ink feeding system is shown in specific embodiment, including negative
Compression pump 13, positive pressure air pump 14, pressure stabilizing gas cylinder 15, valve block 16, pressure control board 19, tracheae 18 and control circuit 21；Valve block
16 are connected to the liquid metal print cartridge 2 of ink feeding system by tracheae 18；Negative pressure air pump 13, positive pressure air pump 14, pressure stabilizing gas cylinder 15 divide
Not Tong Guo tracheae 18 be connected to valve block 16；Pressure control board 19 connects and controls negative pressure air pump 13 and just by control circuit 21
Compression pump 14.
In pressure control component, negative pressure air pump 13, positive pressure air pump 14, pressure stabilizing gas cylinder 15 are for adjusting liquid metal ink
Air pressure inside box 2, valve block 16 plays the role of integrated regulation control, is realized by control circuit 21 to all parts
Control.
It further include atmosphere connection port 22, baroceptor 20, solenoid valve 17 in the valve block 16 of pressure control component, atmosphere connects
Port 22 makes inside and the atmosphere of valve block 16；Baroceptor 20 is connected to valve block 16 by tracheae 18, measures valve block 16
Air pressure；Solenoid valve 17 is located at the inside of valve block 16, connection liquid metal print cartridge 2 tracheae 18 at and connection atmosphere connection port
At 22, it is respectively set by the way of threaded connection.
As it can be seen that the air pressure of valve block 16 and the air pressure of liquid metal print cartridge 2 have certain relationship, baroceptor 20 is needed
Measurement, the various pieces of pressure control component are mainly attached by tracheae 18 and conveying air pressure, solenoid valve 17 have
Two, it is both connected to the inside of valve block 16, is separately connected and is controlled respectively.
Connection between pressure control component mainly uses metal annular knurl connector 37,38,40,42 and pagoda connector 39,41
It completes, in the outside of valve block 16, is all made of metal annular knurl connector 37,38,40 with the junction of tracheae 18 and carries out thread seal
It connects, also uses metal annular knurl connector 42 to carry out thread seal connection with the junction of tracheae 18 on pressure stabilizing gas cylinder 15；And pagoda
Connector 39,41 is located at negative pressure air pump 13, positive pressure air pump 14, on baroceptor 20, and the junction with tracheae 18 carries out close
Envelope connection.Selection metal annular knurl connector or pagoda connector are ensure that just on the basis of guaranteeing that components are tightly connected
In the premise of detachable maintaining, the selection of different connectors is also carried out according to unused conveying and connecting material, to be fully considered
The oxidation attribute of liquid metal itself and the association attributes for conveying substance.
Pressure control component further comprises battery, is connected in control circuit 21.Guarantee the air pressure control in device powers down
Component processed is still effective, prevents the leakage of print head.
The air pressure control method of pressure control component in specific embodiment of the present invention mainly utilizes ink supply system
The host computer of system carries out the conversion of air pressure, carries out real-time control to obtain the air pressure P in liquid metal print cartridge 2；Reduction formula is P
=-(G- γ C-f)/s, wherein P is air pressure, and G is the weight of liquid metal print cartridge 2, and γ is simulation coefficient, and C is oxide mass
Percentage, f are the resistance in ink feeding system, and s is the floor space of liquid metal print cartridge 2.As it can be seen that the numerical value and liquid of atmospheric pressure value P
Liquid level h, oxide mass percentage C in metal print cartridge 2 have relationship, each in wholly liquid state metal ink feeding system
Control assembly is to cooperate, co- controlling.
In print procedure, the host computer of ink feeding system controls negative pressure air pump 13 or positive pressure air pump 14 according to printing demand
It works；When preparing to start printing, the host computer of ink feeding system starts the positive pressure air pump 14 into liquid metal print cartridge
Apply positive pressure, gives liquid metal driving force, at this time when G- γ C-f≤0, P >=0；When preparing to terminate printing, ink feeding system
Host computer starting negative pressure air pump 13 applies negative pressure into liquid metal print cartridge, gives liquid metal equilibrant force, at this time G- γ C-f >
0, P < 0.
It is worth noting that, liquid metal is due to own wt, it is total when its liquid level reaches certain altitude
Preponderance, even if not giving positive pressure at this time is only connected to atmosphere, liquid metal can also leak down, it is therefore desirable to pressure control group
Part gives a negative pressure inside liquid metal print cartridge, and the weight of Lai Pingheng liquid metal prevents from leaking, this with will stop printing
When, giving one negative pressure of liquid metal print cartridge is the principle communicated, recycles the liquid metal in print head, should not
Water clock；On the other hand, when the liquid level of liquid metal is lower than certain value, although its weight is very big, its surface tension
Also very big, so that being that can not be successfully into print head by own wt, then need pressure control component to give one at this time
A positive pressure pushes liquid metal to be flowed down and printed.
The air pressure numberical range inside liquid metal print cartridge 2 that air pressure control method is controlled in above-mentioned print procedure be-
9kPa-9kPa。
Reduction ink road is the channel connected between liquid metal print cartridge and print head, and major function is in removal liquid metal
Oxide impurity, it is ensured that the basic oxide-free of liquid metal for leading to print head, prevent oxide particle block print head,
Guarantee print quality.
Referring to Fig. 7, a kind of reduction ink road of liquid metal ink feeding system, including ink pipe are shown in specific embodiment
25,28,33, restore filter 24 and print head 35；Black pipe 25,28,33 connects liquid metal print cartridge 2 and print head 35, is formed
Ink road；Reduction filter 24 is connected on the ink road, is had a cavity, is contained oxide removal solution 30 in cavity, so that
The oxide in the liquid metal of print head 35 is flowed to by reduction filter 24 to be reduced.
Restoring ink road further includes check valve 23, is connected to liquid metal print cartridge 2 and restores in the ink road between filter 24,
Or it is connected directly between the inlet of reduction filter 24.The effect of check valve is to prevent liquid metal backflow, above two side
Formula can be arranged accordingly according to the length situation of ink road, functionally and indifference.
But there are check valve 23 and reduction filter 24 and the connector selection of black pipe in the position that check valve 23 is arranged
Certain influence.When check valve 23 is connected between liquid metal print cartridge 2 and reduction filter 24, check valve 23 and restored
Filter 24 is provided with entrance and exit, at this point, being all made of female Luer 26,27 and ink at the entrance and exit of check valve 23
Pipe 25,28 is tightly connected, and at the entrance and exit of reduction filter 24, then be all made of pagoda connector 29,32 and black pipe 28,
33 are tightly connected.When check valve 23 is connected directly between the inlet of reduction filter 24, check valve 23 has an entrance and nothing
Outlet, reduction filter 24 have an outlet and without entrance, at this point, the inlet of check valve 23 is using female Luer and black pipe 25
It is tightly connected, the exit of reduction filter 24 is tightly connected using pagoda connector and black pipe 33.
The print head 35 of ink road and the junction of black pipe 33 are restored, thread seal connection is carried out using annular knurl connector 34.
In aforementioned connection relationship, Mo Guan 25,28,33, female Luer 26,27, pagoda connector 29,32, annular knurl connector 34 it is equal
It adopts made of plastic.The characteristic of plastic fastening is oxygen impermeable, and does not react with liquid metal, to ensure liquid metal
Stability.
Restoring the oxide removal solution 30 in filter 24 is NaOH, HCL, H2SO4, one of KOH solution, volume
No more than the 40% of cavity volume, concentration 0.05mol/L-0.5mol/L.Since the density of oxide removal solution 30 is far low
In the density of liquid metal, therefore, oxide removal solution 30 is always in the upper table for being reduced liquid metal 31 in cavity
Face sinks to cavity lower part by the liquid metal 31 that is reduced of reduction.
Embodiment of above is merely to illustrate the utility model, rather than limitations of the present invention.Although referring to implementation
The utility model is described in detail in example, those skilled in the art should understand that, to the technology of the utility model
Scheme carries out various combinations, modification or equivalent replacement, without departing from the spirit and scope of the technical scheme of the present invention, should all
Cover in the scope of the claims of the utility model.
Claims (5)
1. a kind of liquid metal ink feeding system, it is characterised in that:
Including liquid metal print cartridge (2), temperature-controlling module, life counter component, oxide test suite, Liquid level group
Part, pressure control component, reduction ink road, print head；
The liquid metal print cartridge (2) is connected to the reduction ink road and the oxide by two different black pipes respectively
Test suite connects the pressure control component by tracheae (18)；
The venting connector (3) and ink supply connector (4) of the Liquid level component are directly connected in the liquid metal print cartridge (2)
In, it is directly contacted with liquid metal, gravity sensor (1) is connected to the lower surface of the liquid metal print cartridge (2)；
The temperature-controlling module and the life counter component are connected on the outer surface of the liquid metal print cartridge (2).
2. liquid metal ink feeding system as described in claim 1, it is characterised in that:
The liquid metal print cartridge (2) is also equipped with liquid metal ink box cover (44), tracheae (18), venting connector (3), ink supply connector
(4) it is connected on the liquid metal ink box cover (44).
3. liquid metal ink feeding system as described in claim 1, it is characterised in that:
The ink pipe is connected on the side wall of liquid metal print cartridge (2).
4. liquid metal ink feeding system as described in claim 1, it is characterised in that:
The pressure control component is electric pneumatic source, to realize the supply of air pressure.
5. liquid metal ink feeding system as described in claim 1, it is characterised in that:
The life counter component is timing chip, is directly installed on liquid metal print cartridge (2).
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| CN201821219887.3U CN208760199U (en) | 2018-07-31 | 2018-07-31 | A kind of liquid metal ink feeding system |
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| CN201821219887.3U CN208760199U (en) | 2018-07-31 | 2018-07-31 | A kind of liquid metal ink feeding system |
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| CN208760199U true CN208760199U (en) | 2019-04-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110774754A (en) * | 2018-07-31 | 2020-02-11 | 北京梦之墨科技有限公司 | Liquid metal ink supply system and ink supply method |
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2018
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110774754A (en) * | 2018-07-31 | 2020-02-11 | 北京梦之墨科技有限公司 | Liquid metal ink supply system and ink supply method |
| 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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