CN207617114U - A kind of high-precision electric field driven jet deposition 3D printer - Google Patents

Abstract

The utility model discloses a kind of high-precision electric field driven jet deposition 3D printers, it solves the problems, such as that existing 3D printing exists in resolution ratio, stability and controllability various aspects, it can realize multilayered structure high-precision printing, print procedure observation in real time and monitoring, patterns of high precision prints conductive material on an insulating substrate, and technical solution is：Including mounting base, Y-axis workbench is set on the mounting base, vacuum absorbing platform is fixed on Y-axis workbench, printing substrate is adsorbed on vacuum absorbing platform, it is correspondingly arranged printing nozzle and Vertical Observation camera above the printing substrate, printing nozzle and Vertical Observation camera are connected to Z axis workbench, and Z axis workbench is fixed on X-axis workbench；The printing nozzle side is correspondingly arranged on strabismus observation camera, and the printing nozzle other side is correspondingly arranged LED light source and far infrared curing light source；The printing nozzle is connected to storage bottle, and storage bottle is set on lifting platform.

Description

A kind of high-precision electric field driven jet deposition 3D printer

Technical field

The utility model is related to increasing material manufacturings and 3D printing technique field, are sprayed more particularly to a kind of high-precision electric field driven Penetrate deposition 3D printer.

Background technology

Material jet deposition 3D printing is a kind of increasing material manufacturing based on droplet ejection principle selective deposition moulding material Method has proposed multiple material jet deposition 3D printing technique in the world at present, includes mainly ink-jet (thermal or piezoelectricity) Printing, aerosol injection (aerosol jet), polymeric spray (PolyJet), nano particle spraying technique (NanoParticle Jetting) etc..But these traditional material jet deposition formation materials are limited, usually require that printing material The viscosity of material is relatively low (usually less than 100cP), and limited for printed material type, print resolution is not high, is also difficult to reality at present The printing (minimum feature of conventional ink-jet printing curve is generally higher than 20 microns) of existing sub-micron scale resolution ratio, is especially also difficult to It realizes macro/micro- across scale manufacture, and is difficult to realize the multiple dimensioned integrated 3D printing of more materials.It is complicated at many levels in dissimilar materials Three-dimensional structure manufacture view is faced with huge challenge.

Electrohydrodynamic jet printing (Electrohydrodynamic Jet Printing, E-jet printing) is also Referred to as EFI prints, and is micro- liquid that the one kind for being proposed and being developed by Park and Rogers etc. in recent years is based on electrohydrodynamics (EHD) Drop injection forming deposition technique.Use " pushing away " mode different from conventional ink-jet printing technique (thermal jet print, piezoelectricity spray printing etc.), electric current The printing of body power injection uses electric field driven to generate superfine jet stream from liquid cone (taylor cone) top in a manner of " drawing ".It is substantially former Reason is to apply high-voltage pulse power source between conductive nozzle (first electrode) and electrically-conductive backing plate/substrate (second electrode), using Fluid is pulled out to form taylor cone by the forceful electric power field force formed between nozzle and substrate from jet hole, since nozzle has higher electricity Gesture, the fluid at nozzle can be acted on by electroluminescent shearing stress, after local charge repulsion is more than surface tension of liquid, belt current Body sprays from nozzle, and forming superfine jet stream, (due to being the jet stream launched from tip, it is straight that jet diameter is much smaller than nozzle Diameter, therefore form microlayer model size and be far smaller than jet size, the 1-2 order of magnitude usually smaller than jet size), fine liquid drop spray It is deposited on printing bed, and is cured by heat/light etc., successively superposition manufacture realizes the low cost system of complex three-dimensional structure It makes.The resolution ratio of electrohydrodynamic jet printing is not limited by jet size, can be realized under the premise of nozzle is not easy to plug The manufacture of sub-micron, nanoscale resolution micro-nano structure, and it is extensive for the material category of printing, and can realize height The type of the printing of viscosity material, printed material has prodigious expansion.The technology is applied to flexible electronic, biology doctor Treatment, organizational project, photoelectron, micronano optical, composite material, high definition such as show at the numerous areas, it is shown that preferable industrialization is answered Use foreground.

Compared with other materials jet deposition 3D printing technique, although electrohydrodynamic sprays 3D printing in all many-sided tools There are highly significant and advantage outstanding.But electrohydrodynamic injection 3D printing still has many deficiency and limitation, face Face some insoluble problems, includes mainly：(1) it is difficult to realize the printing of high-precision multilayer, the problem of multilayer print registration It can not ensure；(2) usually printing curve or feature size are very small (micro/nano-scale), and print speed is very high, spray Mouth is very small at a distance from substrate, it is difficult to print procedure carry out real observation and when monitor, the precision and quality of printing curve without Method controls；(3) modes such as existing syringe pump feed cannot be satisfied high-precision figure there are the precision and stability of feed is poor The requirement of printing；(4) conductive material high-precision and reliable and stable printing on insulating substrate (substrate) are difficult to realize.Due to leading Accumulation of the electric material on insulating substrate (base material), seriously affects the stability of electric field, and then for the precision of printing curve, matter Amount and the stabilization of print procedure have adverse effect on；(5) drip molding (printout) prints height-limited system, due to conductive nozzle The height of the limitation of distance between conductive substrates, EFI print printing is generally defined in 3 millimeters hereinafter, being difficult to realize large scale zero Part and macro/micro- manufacture across mesostructure.This is because EFI impression can be with conductive substrates at the electric field force for stablizing cone jet stream The distance between conductive nozzle increases and weakens, and after more than certain altitude (about 3mm), electric field force is not enough to maintain to stablize cone The generation of jet stream cannot achieve and continue to print.Simultaneously as printing height is constantly promoted and variation, continuous adjusting parameter is needed It improves electric field force and realizes printing to ensure to stablize cone jet stream, this is difficult to realize in practical print procedure, therefore EFI Print can not really realize macro/micro- across scale manufacture, while also can not really realize 3D printing；(6) substrate/substrate (base material) is received Material is limited, receives substrate (base material) and is used as second electrode, usually requires that substrate is conductive, printed on nonconductive substrate When face many restrictions, need carry out conductive processing；(7) high for the pattern of substrate and flatness requirement, to ensure that electric field is steady It is fixed, it is carried out in EFI print usually only applicable substrate certain altitude variation range, it is difficult to be beaten having surface (more than 3mm) in kind Print, can not also print on the substrates such as non-smooth, curved surface, limit application in many aspects, cannot achieve real 3D and beat Print；(8) printed material is limited, needs to apply very high high pressure in the EFI print course of work on conductive nozzle, certain cells or The printing of bioactivity organization material is limited.In addition, during some metal materials or the extraordinary file printing of electric conductivity Short circuit dischange phenomenon is easy tod produce, print procedure stability is poor, therefore, in terms of EFI is imprinted on biomaterial and metal material printing Face prodigious limitation；(9) when printing grand yardstick structure and large-scale part, efficiency is low.

Therefore, current material jet deposition 3D printing technique is in presence such as printed material, resolution ratio, reception substrates (base material) Many deficiencies and limitation cannot achieve high graphics printing, especially cannot achieve high-resolution multilayered structure and beat The printing of print and complex three-dimensional micro-nano structure, especially cannot achieve conductive material high-precision printing on an insulating substrate, no With the ability to real time monitoring and observation during printing.Stability in print procedure and poor controllability.

Utility model content

In order to overcome the above-mentioned deficiencies of the prior art, the utility model provides a kind of high-precision electric field driven jet deposition 3D printer, it can realize that multilayered structure high-precision printing, print procedure are observed and monitored in real time, and conductive material is served as a contrast in insulation On bottom patterns of high precision print, be especially that by the efficient and high-precision 3D printing of macro/micro- three micro-structures, solve it is macro/ The problem of micro- across scale integration printing, while type and range that controllable printed material and substrate use are expanded, raising is beaten Print stability, reliability and continuity；

The implementation that the utility model uses for：(1) it is connected with high-voltage pulse power source anode using conductive nozzle, profit With electrostatic induction, consistent electric field is formed.(2) ac high voltage source is introduced, when printing conductive material on an insulating substrate, using friendship Flow high voltage power supply.(3) bias voltage+high-voltage dc pulse voltage is used, the pattern and ruler of taylor cone are controlled using bias voltage It is very little, it is realized by high-voltage dc pulse voltage and stablizes cone jet stream injection, due to the introducing of bias voltage, realize cone jet stream injection Voltage significantly reduces, and can obtain smaller microlayer model, printing precision is greatly improved；Simultaneously because bias voltage constantly into Row charge is fed, and can be significantly improved the frequency of high-voltage dc pulse voltage used, be improved the efficiency of printing.(4) it is arranged three kinds Printing model：Jet model is bored in pulse；Continuous cone jet model；Ac high voltage printing model.Wherein continuously bore jet model Using high-voltage dc voltage；Pulse bores jet model and uses bias voltage+high-voltage dc pulse voltage；Ac high-voltage printing model Using ac high voltage.Micro-feature structure is printed using pulse cone jet model, it is ensured that by the smart degree min of printing micro-feature structure Resolution (precision is preferential)；Macroshape feature is printed using continuous cone jet model, realizes under the premise of meeting precision and efficiently beats It prints (taking into account precision, efficiency comes first)；Using ac high voltage printing model, when realizing that conductive material prints on an insulating substrate. (5) a kind of new method of feeding and device are introduced, can realize that micro liquid continuous-stable is fed, it is ensured that the confession in print procedure The stability of material and pressure.The feed mode of traditional EFI print back pressure and is fed unstable in print procedure, cannot achieve high-precision Degree printing, especially the stability in print procedure is poor, seriously affects the consistency and high-precision of printing curve.(6) it combines remote Infrared curing light source and print platform with heating function can realize the rapid curing of print structure, improve multilayer printing Precision, while significantly improving printing effect.

Specifically, the utility model uses following technical proposals：

Y-axis is arranged on the mounting base in a kind of high-precision electric field driven jet deposition 3D printer, including mounting base Workbench fixes vacuum absorbing platform on Y-axis workbench, adsorbs printing substrate on vacuum absorbing platform, on the printing substrate Side is correspondingly arranged printing nozzle and Vertical Observation camera, and printing nozzle and Vertical Observation camera are connected to Z axis workbench, Z axis work It is fixed on X-axis workbench as platform；The printing nozzle side is correspondingly arranged on strabismus observation camera, and the printing nozzle other side corresponds to LED light source and far infrared curing light source are set；The printing nozzle is connected to storage bottle, and storage bottle is set on lifting platform.

Further, portal frame is set on the mounting base, and portal frame includes the portal frame branch being connect with mounting base Portal frame crossbeam is arranged in frame, portal frame cradle top, and X-axis workbench is fixed on portal frame crossbeam.

Further, the Z axis workbench is connected with nozzle holder, and nozzle carrier, the printing are fixed on nozzle holder Nozzle is fixed on nozzle carrier.

Further, Z axis mounting platform is fixed on the Z axis workbench, fixed vertical camera branch on Z axis mounting platform Frame, Vertical Observation camera are fixed on vertical camera support.

Further, the Vertical Observation camera is set to printing nozzle side, and vertical with mounting base.

Further, fixed strabismus camera support on the Z axis mounting platform, strabismus observation camera are fixed on strabismus camera On holder；The strabismus observation camera with mounting base there is angle, angle can be adjusted between 0-80 degree.

Further, the LED light source and far infrared curing light source are fixed on light source bracket, and light source bracket is fixed on Z On axis mounting platform；The LED light source and far infrared curing light source have angle with mounting base, and angle can be between 0-80 degree It adjusts.

Further, the storage bottle is connect with backpressure regulation module.

Further, the printing nozzle is connect with high-voltage pulse power source anode, high-voltage pulse power source and signal generator Connection.

0-800 millimeters of the effective travel of the X-axis workbench, repetitive positioning accuracy are not less than ± 0.1 micron, absolute fix Precision is not less than ± 0.5 micron, maximum speed 1000mm/s, peak acceleration 100m/s^2.

0-800 millimeters of the effective travel of the Y-axis workbench, repetitive positioning accuracy are not less than ± 0.1 micron, absolute fix Precision is not less than ± 0.5 micron, maximum speed 1000mm/s, peak acceleration 100m/s^2.

0-200 millimeters of the effective travel of the Z axis workbench, absolute fix precision are not less than ± 0.2 micron.

For overcome the deficiencies in the prior art, the utility model also provides a kind of high-precision electric field driven jet deposition 3D and beats The working method of print machine, includes the following steps：

Step 1：Printing initialization, X-axis workbench, Y-axis workbench, Z axis movable workbench are in situ to printing；According to printing Material sets the heating temperature of vacuum absorbing platform；

Step 2：Z axis workbench moves down, and printing nozzle is made to reach predetermined altitude, opens LED light source, far infrared cures light Source, Vertical Observation camera, strabismus observation camera, utilize vertical camera auxiliary positioning；Camera is observed by strabismus to observe at nozzle Microlayer model pattern；

Step 3：Select printing model：Jet model or continuous cone jet model or ac high voltage pattern are bored in pulse；Knot Close the movement of workbench, printing forms 3D solid structure, in print procedure using strabismus observation camera carry out observation in real time with Monitoring；

Step 4：Each workpiece is closed, X-axis workbench, Y-axis workbench, Z axis workbench return to original station, from printing 3D solid structure is removed on substrate.

Further, in the step 3, if printed material is conductive material, ac high voltage printing model, adjustment are selected Voltage and frequency are printed.

Further, in the step 3, if printing large scale macrostructure, continuous cone jet model is selected, using direct current High pressure adjusts voltage swing and is printed.

Further, in the step 3, if printing high-precision micro-feature structure, strobe pulse bore jet model, letter is opened Camera is observed in number generator and the straight source of high-voltage pulse using strabismus, adjusts printing technology parameter and is printed.

Further, if multilayered structure need to be printed, printing nozzle rises a thickness height after printing first layer Degree, next layer cross section is continued in conjunction with the positioning of Vertical Observation camera using the solid object surface of printing as target print position Deposition printing, so recycle, until completing all layers of printing, ultimately form 3D solid structure.

Compared with prior art, the utility model has the beneficial effects that：

(1) conductive nozzle is only needed to be connected with high-voltage power cathode, the substrate that need not be grounded is used as to electrode, passes through electrostatic Induction effect forms the cone required consistent electric field of jet stream, can reduce or avoid traditional EFI India and China conduction nozzle and conduction Electric discharge or phenomena such as short circuit dischange between substrate, improves the reliability of print procedure.Especially break through existing EFI print The high-precision printing of arbitrary height and substrate shape is realized in the limitation of printing-forming height.

(2) it introduces pulse cone jet model, continuously bore three kinds of jet model, ac high voltage pattern printing models, according to The difference of printed material type, different using substrate/substrate, printing feature structure is different, select different printing models.One side Face expands the technique scope of application of the utility model, while improving printing precision and efficiency, is especially that by macro/micro- Across scale integration printing, multilayered structure high-precision printing.

(3) observation module is introduced, print procedure whole process is observed and is monitored in real time, while being solved in multilayer print procedure The precise positioning of nozzle.

(4) storage bottle combination lifting platform and backpressure regulation module are used, can be precisely controlled be supplied at nozzle flow of material with Pressure precisely adjusts meniscus, it is ensured that print procedure stability improves printing precision and quality.

(5) substrate heating is used with the curing mode that is combined of far infrared solidification, realizes the rapid curing of printed material, one Aspect improves printing effect, on the other hand, improves the precision of multilayer printing.

(6) nozzle is mounted on nozzle carrier, dismounting, simple to install, easy to clean and replacement.

(7) new method of feeding and device are used, can realize that micro liquid continuous-stable is fed, it is ensured that in print procedure Stability.Overcome in the feed mode print procedure of traditional EFI print back pressure and be fed unstable, cannot achieve high-precision and beat Print, especially the stability in print procedure is poor, seriously affects the consistency and high-precision of printing curve.

(8) it uses Musashi nozzle, nozzle to be hardly damaged, the reliability of printing can be improved.Relative to plain nozzle, Musashi spray Mouth front-end pipelines interior shape can effectively reduce the resistance of solution outflow.In addition, compared with common accurate syringe needle, needle It is shorter inside head leading portion, it is not easy to plug, improves service life.Internal diameter polishing processing, improves needle wall surface flatness, realizes Micro steady extruding printed material.

(9) it can realize the multiple material printing from high viscosity to low viscosity, be suitble to material category extensive.

(10) equipment operation is simple, at low cost.

(11) planer type structure, the advantages that equipment is rigidly good, and operating space is big are used.

(12) printing curve precision is high, can realize the printing of sub-micron scale and yardstick figure.

(13) the multiple nozzles for combining configuration can realize more materials and multiple dimensioned integration printing.

(14) printing effect is high, and stability is good, and reliability is high.

High-precision electric field driven jet deposition 3D printer have it is a variety of a little and wide application prospect, significantly improve and beat The precision of impression shape, stability, reliability and the printing effect of printing, especially it is with minute yardstick and scale 3D printing of receiving The ability of ability and macro/micro- across scale integration printing, it is extensive for printed material, it is greatly broadened jet deposition 3D printer Application field.Especially in micro structure array, minute yardstick mold, high aspect ratio microstructures, complex three-dimensional micro-nano structure, microelectronics Equal fields have and its wide application prospect.Especially have in large scale transparent electrode and ultra tiny circuit manufacture view wide General application prospect.

Description of the drawings

The accompanying drawings which form a part of this application are used for providing further understanding of the present application, and the application's shows Meaning property embodiment and its explanation do not constitute the improper restriction to the application for explaining the application.

Fig. 1 is a kind of general structure schematic diagram of high-precision electric field driven jet deposition 3D printer of the utility model；

In figure, 1 mounting base, 2 lifting platforms, 3 storage bottles, 4 backpressure regulation modules, 5 strabismus observation cameras, 6 strabismus cameras Holder, 7 portal frames, 701 portal frame holders, 702 portal frame crossbeams, 8Z axis mounting platform, 9Z axis workbench, 10X axis workbench, 11 Vertical Observation cameras, 12 vertical camera supports, 13 light source brackets, 14 nozzle holders, 15 nozzle carriers, 16 printing nozzles, 17LED Light source, 18 far infrared curing light sources, 19 signal generators, 20 high-voltage pulse power sources, 21 substrates, 22 vacuum absorbing platforms, 23Y axis Workbench.

Specific implementation mode

It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field The identical meanings of understanding.

It should be noted that term used herein above is merely to describe specific implementation mode, and be not intended to restricted root According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative It is also intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet Include " when, indicate existing characteristics, step, operation, device, component and/or combination thereof.

As background technology is introduced, 3D printing resolution ratio, stability and controllability various aspects exist in the prior art Deficiency, in order to solve technical problem as above, present applicant proposes a kind of high-precision electric field driven jet deposition 3D printers.

In a kind of typical embodiment of the application, as shown in Figure 1, it is heavy to provide a kind of high-precision electric field driven injection Product 3D printer, it includes：Mounting base 1, lifting platform 2, storage bottle 3, backpressure regulation module 4, strabismus observation camera 5, strabismus Camera support 6, portal frame 7, portal frame holder 701, portal frame crossbeam 702, Z axis mounting platform 8, Z axis workbench 9, X-axis work Platform 10, Vertical Observation camera 11, vertical camera support 12, light source bracket 13, nozzle holder 14, nozzle carrier 15, printing nozzle 16, LED light source 17, far infrared curing light source 18, signal generator 19, high-voltage pulse power source 20, substrate 21, vacuum absorbing platform 22, Y-axis work 23.Wherein Y-axis workbench 23 is placed on mounting base 1, vacuum absorbing platform 22 be fixed on Y-axis workbench 23 it On, and adsorb printing substrate 21；Portal frame 7 is fixed on mounting base 1, and portal frame 7 includes the dragon being connect with mounting base 1 Door frame holder 701,701 top setting portal frame crossbeam 702 of portal frame holder, X-axis workbench 10 is fixed on portal frame crossbeam 702 On, Z axis workbench 9 is fixed on X-axis workbench 10, and perpendicular to being horizontally mounted bottom plate 1；Z axis mounting platform 8 is fixed on Z On axis workbench 9, it is fixed with nozzle holder 14 on Z axis mounting platform 8, nozzle carrier 15, nozzle are installed on nozzle holder 14 Equipped with the printing nozzle 16 perpendicular to mounting base 1 on seat 15；Vertical Observation camera 11 is fixed on vertical camera support 12, is hung down Straight camera support 12 is mounted on Z axis mounting platform 8, is placed in the side of nozzle 16, and perpendicular to mounting base 1；Strabismus observation Camera 5 is fixed on strabismus camera support 6, and strabismus camera support 6 is mounted on Z axis mounting platform 8, is placed in the another of nozzle 16 Side has a certain degree with mounting base 1, and angle is arbitrarily adjusted between 0-80 degree；LED light source 17 and far infrared solidification Light source 18 is mounted on light source bracket 13, is placed in the opposite side of strabismus observation camera 5, and angle can appoint between 0-80 degree Meaning is adjusted；Signal generator 19 is connected with high voltage power supply 20, and the anode of high voltage power supply 20 is connected with printing nozzle 16；Lifting Platform 2 is placed on mounting base 1, and storage bottle 3 is placed on lifting platform 2, and storage bottle 3 connects printing nozzle 16 and backpressure regulation module 4。

Printing nozzle 16 is using stainless steel nozzle, Musashi formula syringe needle, glass syringe needle (syringe needle metal spraying conductive processing) etc., nozzle 0.1-200 microns of inside diameter ranges.

Backpressure regulation module 4 includes precise pressure regulating valve, connecting line, pneumatic supply, and pneumatic supply preferentially uses High Purity Nitrogen gas cylinder. The working range of precise pressure regulating valve is：0.1-8bar.

Lifting platform 2, storage bottle 3, backpressure regulation module 4 form feed block, realize that printed material is stablized in print procedure Continuous feeding, and can precisely adjust the supply of material.Storage bottle is non-metallic material, capacity 0-500ml；Two-stage tune Whole feed (air pressure and liquid level difference).Infusion pipeline is opaque material, and caliber is matched with syringe needle adapter.When feed, storage bottle Interior tracheae is located at liquid level or more, and liquid supply pipe is located at liquid level hereinafter, storage bottle 3 is fixed on lifting platform 2.

Vacuum absorbing platform 22 is heated for the vacuum absorbing platform with heating function using heating rod, and heating temperature is most A height of 50 DEG C, size is 130mm × 130mm.It has insulation and heat conductivility.

X-axis workbench, Y-axis workbench, Z axis workbench component movement module.X-axis workbench, Y-axis workbench may be used Linear motor drives, and the driving of high-resolution stepper motor may be used in Z axis workbench.X-axis workbench, Y-axis workbench and Z axis work High-accuracy Piezoelectric Driving can also be used as platform.

In the present embodiment, X-axis workbench 10 is linear motor module, and 200 millimeters of effective travel, repetitive positioning accuracy is not low In ± 0.3 micron, absolute fix precision is not less than ± 0.6 micron, maximum speed 700mm/s, peak acceleration 100m/s^2.

Y-axis workbench 23 is linear motor module, and 200 millimeters of effective travel, it is micro- that repetitive positioning accuracy is not less than ± 0.3 Rice, absolute fix precision are not less than ± 0.6 micron, maximum speed 700mm/s, peak acceleration 100m/s^2.

Z axis workbench 9 is using high-resolution stepper motor+precise grating, 50 millimeters of stroke, 1 micron of absolute fix precision.

X-axis workbench, Y-axis workbench and Z axis workbench can also use high-accuracy Piezoelectric Driving.

High-voltage pulse power source 20, it is with the following functions, export high direct voltage；Export ac high-voltage；It is high to export pulse direct current Pressure, and bias can be set.The bias range 0-2KV of setting is continuously adjustable, high direct voltage 0-5KV, exports pulsed dc voltage 0- ± 4KV is continuously adjustable, and output pulse frequency 0Hz-3000Hz is continuously adjustable.Ac high-voltage 0- ± 4KV.

Vacuum absorbing platform 22 has insulation and heat conductivility.0-120 degrees Celsius of heated perimeter.

Strabismus observation camera, Vertical Observation camera, LED light source composition observation module.Strabismus observation camera 5 and Vertical Observation Camera 11 is industrial camera or high resolution CCD, using 8 multiplying power camera lenses.

Far infrared curing light source 18 is the choice refreshments laser that spot diameter is less than 0.1 millimeter.

In the typical embodiment of another kind of the application, a kind of high-precision electric field driven jet deposition 3D printing is provided The specific process step of the working method of machine, printing-forming part is as follows：

Step 1：Printing initialization, X-axis workbench, Y-axis workbench, Z axis movable workbench are in situ to printing.According to specific Printed material setting vacuum absorbing platform heating temperature.

Step 2：Z axis workbench drives nozzle to move down, and printing nozzle is made to reach the height of setting, open LED light source, Far infrared curing light source, Vertical Observation camera, strabismus observation camera.Utilize Vertical Observation camera auxiliary positioning；It is seen by squinting Camera is surveyed, observes microlayer model pattern (shapes and sizes of taylor cone) at nozzle, and by adjusting technological parameter, obtain ideal Taylor cone and cone jet stream.

Step 3：Select printing model：Jet model or continuous cone jet model or ac high voltage pattern are bored in pulse.Such as Fruit be on an insulating substrate print conductive material (such as on PET or glass substrate print silver ink (slurry), selection Ac high voltage printing model, adjusts voltage and frequency realizes the high-precision system of arbitrarily complicated pattern in conjunction with the movement of workbench It makes.If it is printing large scale macrostructure, voltage swing is adjusted, and tie using high direct voltage using continuous cone jet model The high-precision manufacture of arbitrarily complicated pattern is realized in the movement for closing workbench.If it is printing high-precision micro-feature structure, then execute Step 4.

Step 4：Open signal generator and pulse direct current high voltage observe camera using strabismus, adjust printing technology ginseng Number, such as voltage, frequency, duty ratio etc., the cone jet stream for obtaining ideal taylor cone and stablizing.

Step 5：In conjunction with the movement of workbench, the high-precision manufacture of arbitrarily complicated structure or pattern is realized.It utilizes simultaneously Strabismus observation camera, observes and monitors in real time for whole printing process, it is ensured that the precision and quality of printing curve.

Step 6：If you need to print multilayered structure, then after printing first layer, rise a thickness height, is seen in conjunction with vertical The precise positioning for surveying camera is continued for the deposition of next layer cross section using printed solid object surface as target print position Printing so recycles, until completing all layers of printing, ultimately forms 3D solid/structure.

Step 7：Shutdown signal generator and high voltage power supply, vacuum absorbing platform, precise pressure regulating valve, LED light source, far infrared Curing light source and Vertical Observation camera, strabismus observation camera etc., X-axis workbench, Y-axis workbench, Z axis workbench return to original work Position, removes Forming Workpiece from substrate.

In order to enable those skilled in the art can clearly understand the technical solution of the application, below with reference to tool The technical solution of the application is described in detail in the embodiment of body.

Using photosensitive polymer as printed material, use silicon chip for the base material of printing, using a kind of high described in utility model Precision electric field driven jet deposition 3D printer realizes that the specific printing technology process of high-precision jet deposition is as follows：

Step 1：Printing initialization, it is in situ that X-axis workbench 10, Y-axis workbench 23, Z axis workbench 9 are moved to printing.Very The heating temperature of empty absorption platform is set in 40 degree.

Step 2：Z axis workbench 9 moves down, and printing nozzle 16 is made to reach the position at a distance from substrate 21 for 100 microns Set, open LED light source 17, far infrared curing light source 18, Vertical Observation camera 11, strabismus observation camera 5, using strabismus camera 5, The variation (taylor cone) of microlayer model pattern at 16 tip of printing nozzle is observed, the technological parameters such as back pressure, voltage are adjusted, it is ensured that is obtained Ideal taylor cone and the cone jet stream stablized.X-axis workbench 10 and 23 print speed of Y-axis workbench are set as 200mm/s.

Step 3：The present embodiment prints sub-micron scale pattern, and strobe pulse bores jet model, straight using bias voltage+pulse Flow high voltage.

Step 4：Open signal generator 19 and direct current high voltage pulses power supply 20, bias voltage are set as 1000V, high-tension pulse The voltage of punching is set as 800V, frequency 1000HZ, duty ratio 55%.

Step 5：According to mimeograph documents G code or pre-set printing path, pass through X-axis workbench 10 and Y-axis work The printing of a layer pattern is realized in the movement for making platform 23.Camera is observed using strabismus, whole printing process is observed and supervised in real time Control, it is ensured that precision, the quality and stability of printing curve.

Step 6：When printing the second layer and the above structure, according to the lift height of setting, Z axis workbench 9 rises one Thickness height (1 micron of the present embodiment thickness height), the precise positioning of cooperation Vertical Observation camera 11, with printed entity table Face is target print position, is continued for the deposition printing in next layer (second layer) section, so recycles, until completing all The printing of layer, ultimately forms 3D solid/structure.

Step 7：Shutdown signal generator 19 and pulse direct current high voltage power supply 20, vacuum absorbing platform 22, backpressure regulation mould Block 4, LED light source 17, far infrared curing light source 18, Vertical Observation camera 11, strabismus observation camera 5 etc., X-axis workbench 10, Y-axis Workbench 23,9 workbench of Z axis workbench return to original station, and Forming Workpiece is removed from substrate 21.

The foregoing is merely the preferred embodiments of the application, are not intended to limit this application, for the skill of this field For art personnel, the application can have various modifications and variations.Within the spirit and principles of this application, any made by repair Change, equivalent replacement, improvement etc., should be included within the protection domain of the application.

Claims (1)

1. a kind of high-precision electric field driven jet deposition 3D printer, characterized in that including mounting base, on the mounting base Y-axis workbench is set, fixes vacuum absorbing platform on Y-axis workbench, printing substrate, the printing is adsorbed on vacuum absorbing platform It is correspondingly arranged printing nozzle and Vertical Observation camera above substrate, printing nozzle and Vertical Observation camera are connected to Z axis workbench, Z axis workbench is fixed on X-axis workbench；The printing nozzle side is correspondingly arranged on strabismus observation camera, and printing nozzle is another Side is correspondingly arranged LED light source and far infrared curing light source；The printing nozzle is connected to storage bottle, and storage bottle is set to lifting platform On；

Portal frame is set on the mounting base, and portal frame includes the portal frame holder being connect with mounting base, portal frame holder Portal frame crossbeam is arranged in top, and X-axis workbench is fixed on portal frame crossbeam；

The Z axis workbench is connected with nozzle holder, and nozzle carrier is fixed on nozzle holder, and the printing nozzle is fixed on nozzle On seat；Fix Z axis mounting platform on the Z axis workbench, fixed vertical camera support on Z axis mounting platform, Vertical Observation phase Machine is fixed on vertical camera support；The Vertical Observation camera is set to printing nozzle side, and vertical with mounting base；Institute Fixed strabismus camera support on Z axis mounting platform is stated, strabismus observation camera is fixed on strabismus camera support；The strabismus observation Camera with mounting base there is angle, angle can be adjusted between 0-80 degree；

The LED light source and far infrared curing light source are fixed on light source bracket, and light source bracket is fixed on Z axis mounting platform； The LED light source and far infrared curing light source with mounting base there is angle, angle can be adjusted between 0-80 degree；

The storage bottle is connect with backpressure regulation module；The printing nozzle is connect with high-voltage pulse power source anode, high-voltage pulse Power supply is connect with signal generator.