CN103722909B - A kind of many physical quantitys cooperative control method towards reel-to-reel EFI print procedure - Google Patents
A kind of many physical quantitys cooperative control method towards reel-to-reel EFI print procedure Download PDFInfo
- Publication number
- CN103722909B CN103722909B CN201310728496.XA CN201310728496A CN103722909B CN 103722909 B CN103722909 B CN 103722909B CN 201310728496 A CN201310728496 A CN 201310728496A CN 103722909 B CN103722909 B CN 103722909B
- Authority
- CN
- China
- Prior art keywords
- nozzle
- substrate
- voltage
- microenvironment
- value
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The invention discloses a kind of many physical quantitys cooperative control method towards reel-to-reel EFI print procedure, comprising: (a) inputs the series of process parameter reference values of associated substrate, nozzle and spray printing microenvironment; B () performs real-time detection respectively to the tension state of the location status of nozzle, jet state, the sedimentation state of drop on substrate, substrate and location status respectively; C () adopts spray printing microenvironment-voltage mixed-control mode jointly to perform adjustment to spray nozzle voltage and spray printing microenvironment humiture; D () adopts tension force-Position Hybrid Control mode jointly to perform adjustment to the tension force of substrate and position, nozzle location; E () continued above-mentioned parameter closed-loop control before spray printing completes, until complete whole EFI print procedure.By the present invention, EFI print quality can be significantly improved, possess features such as adapting to all kinds of complex working condition, not easily disturbed, high efficiency and high reliability simultaneously, be thus particularly useful for the preparation process of reel-to-reel EFI printed product.
Description
Technical field
The invention belongs to EFI printing technique field, more specifically, relate to a kind of many physical quantitys cooperative control method towards reel-to-reel EFI print procedure.
Background technology
Traditional Printing techniques mainly adopts the principle of thermal or piezoelectricity to produce injection, and the generation that drop sprays depends on the size of jet-printing head with spraying, be generally 1.89 times of jet-printing head diameter, manufacture tiny jet-printing head and need complicated micro-manufacturing process and material, therefore traditional Printing techniques manufactures ultra-fine droplet and substantially cannot realize.Compared with traditional Printing techniques, produce by electrostatic field the EFI printing technique (electrohydrodynamic spray printing) sprayed and can produce more tiny drop and brin, diameter can reach Nano grade.Meanwhile, EFI printing technique can the multiple material such as spray printing macromolecule organic, makes its range of application broader, as flexible electronic manufacture, and ceramic component manufacture, organizational project etc.
But the unstability of EFI printing technique self makes it very easily be subject to the impact of technological parameter fluctuation in product preparation process, temperature and humidity etc. in such as spray nozzle voltage, surrounding environment; In addition, consider that the drop that EFI prints reaches Nano grade, electricity Printing techniques can be used to prepare the micron even product of Nano grade, and this just it is also proposed the precision controlling of requirements at the higher level to technological parameters such as the substrate tension force in reel-to-reel EFI print procedure, position and nozzle movement positions; Especially, there is coupled relation to a certain degree in the impact between these technological parameters, and this just makes to need to carry out collaborative coupling control treatment to these technological parameters in EFI print procedure.In contrast, often only each variable above-mentioned is controlled separately in prior art, or simultaneously to wherein several Variable Control but the coordinated lacked between them, be thus difficult to meet the EFI printing precision requirement day by day improved.
Summary of the invention
For above defect or the Improvement requirement of prior art, the invention provides a kind of many physical quantitys cooperative control method towards reel-to-reel EFI print procedure, wherein by considering substrate tension force, substrate position, nozzle location and spray printing microenvironment humiture, the impact that intercouples between spray nozzle voltage, system, closed-loop control is carried out to multiple technological parameter, the corresponding EFI that significantly improves prints quality, possess simultaneously and adapt to all kinds of complex working condition, not easily disturbed, the feature such as high efficiency and high reliability, thus the preparation process of reel-to-reel EFI printed product is particularly useful for.
For achieving the above object, according to the present invention, provide a kind of many physical quantitys cooperative control method towards reel-to-reel EFI print procedure, wherein flexible base board is delivered to airtight spray printing microenvironment region from blowing end via the pair roller feed arrangement of upstream extremity, for ensureing that this region of humiture, spray printing region is configured to the microenvironment pattern closed, nozzle forms jet spray on substrate and goes out required pattern under electric field action, after overcuring process, substrate completes rewinding via the reel material collecting device of downstream again, it is characterized in that, the method comprises the following steps:
A the series of process parameter reference values of () input associated substrate, nozzle and spray printing microenvironment, comprising substrate tension force reference value F
r, substrate position reference value P
r, nozzle location reference value M
r, spray nozzle voltage reference value u
r, spray printing microenvironment temperature reference value T
rwith humidity reference value H
r; Then gather the current voltage u obtained about nozzle, and the Current Temperatures T of spray printing microenvironment and current humidity H is in interior current state parameter value;
B () adopts three cover vision systems to observe EFI print procedure, wherein first set vision system is used for observing the jet state of nozzle, second cover vision system detects for performing realtime graphic to the sedimentation state of drop on substrate, and the 3rd cover vision system is used for observing flexible base board position; Processing result image in conjunction with first, second vision system merges the voltage feedback value e of delivery nozzle
u, based on the location feedback value e of the processing result image delivery nozzle of the second cover vision system
m; Simultaneously based on the processing result image output substrate location feedback value e of the 3rd cover vision system
p; In addition, tension detect sensor and substrate orientation system is adopted respectively to the current tensile F of substrate, substrate along the current location P of X-axis and Y direction
xand P
yperform and detect in real time and feedback; And adopt grating scale to gather acquisition respectively about nozzle is at the current location M of X-axis, Y-axis and Z-direction
x, M
yand M
z;
C () adopts the humiture of spray printing microenvironment-voltage mixed-control mode to the voltage of nozzle and spray printing microenvironment jointly to perform adjustment:
In the process, by the Current Temperatures T of spray printing microenvironment and current humidity H and its reference value T
rand H
rcompare process, and comparative result is inputed to temperature controller and humidity controller respectively, the corresponding output control signal of these two controllers is to realize the temperature scaling factor of spray printing microenvironment and humidity closed-loop control; Temperature controller and humidity controller are respectively based on described comparative result delivery nozzle voltage revision directive S
tand S
hthe voltage pulsation caused is changed in order to reduce humiture, and by this spray nozzle voltage revision directive S
t, S
hwith described voltage feedback value e
ucommon and spray nozzle voltage reference value u
rcompare process, then by comparative result input voltage controller to realize closed-loop control to spray nozzle voltage;
D () adopts the position of tension force-Position Hybrid Control mode to the tension force of substrate and position, nozzle jointly to perform adjustment:
In the process, for the tension adjustment of substrate, by the current tensile F of substrate and tension force reference value F
rcompare, and comparative result is inputed to the corresponding output control signal of tension controller, realize the closed-loop control to substrate tension force thus; Tension controller is based on described comparative result output substrate position correction instruction simultaneously S
1with nozzle location modify instruction S
f, and using it as the part of substrate position and nozzle location input signal in order to improve the positioning precision of substrate and nozzle;
For the position adjustments of substrate, by described substrate position revision directive S
1with described substrate position reference value P
rmerging treatment is as the input signal of substrate position controller, and corresponding output is to the position control instruction P of substrate X-axis and Y direction
xr, P
yr; These position control instructions P
xr, P
yrrespectively with the current location P of substrate
x, P
yprocess mutually, and corresponding output control signal realizes the closed-loop control to substrate X-axis and Y-axis position deviation thus;
For the position adjustments of nozzle, by described nozzle location modify instruction S
f, nozzle location value of feedback e
mwith nozzle location reference value M
rmerging treatment is as the input signal of nozzle location controller, and corresponding output is to the position control command M of nozzle X-axis, Y-axis and Z-direction
xr, M
yrand M
zr; These position control command M
xr, M
yrand M
zrrespectively with the current location M of nozzle
x, M
yand M
zprocess mutually, and corresponding output control signal is to realize the closed-loop control to nozzle X-axis, Y-axis and Z axis position deviation;
E (), after each state parameter of substrate, nozzle and spray printing microenvironment all meets technological requirement, carries out EFI printing, continue to carry out closed-loop control to above-mentioned parameter, until complete whole EFI print procedure before spray printing completes.
As further preferably, in step (b), described First look system is preferably equipped with the industrial CCD camera of frame speed more than 300fps; Described second vision system is preferably integrated and synchronizing moving with nozzle integrated installation, and is equipped with the industrial CCD camera of frame speed more than 300fps; Described 3rd cover vision system be preferably equipped with pixel value higher than 1,300,000 industrial CCD camera.
As further preferably, in step (c), preferred employing distributed temperature control mode performs and operates the temperature scaling factor of spray printing microenvironment: in spray printing microenvironment, arrange that multiple temperature sensor detects in real time and feeds back the current temperature value of each layout points, these current temperature value after signal transacting respectively with described temperature reference value T
rcompare, comparative result is as the input signal of multi-channel temperature control device; This multi-channel temperature control device processes in real time multiple signals respectively and exports control signal to control the duty of heat generating core, thus realizes the temperature scaling factor to spray printing microenvironment.
As further preferably, in step (c), following formula is preferably adopted to obtain described spray nozzle voltage revision directive S
t: S
t=μ
t* (T
r-T), wherein μ
trepresent that temperature is to the factor of influence of spray nozzle voltage, its setting value is 0.15 ~ 0.45; In addition, following formula is preferably adopted to obtain described spray nozzle voltage revision directive S
h: S
h=μ
h* (H
r-H), wherein μ
hrepresent that humidity is to the factor of influence of spray nozzle voltage, and its setting value is 0.50 ~ 0.85.
As further preferably, in step (d), the control element that preferred employing can change Driving Torque performs the closed loop control operations to substrate tension force: the tension detect axle first by being configured with tension pick-up detects in real time and feeds back the current tensile value of substrate, this current tensile value and described tension force reference value F
rcompare, comparative result is as the input signal of tension controller; This tension controller is tackled this input signal mutually and is processed in real time and export control signal to magnetic powder cluth to change Driving Torque, thus realizes the closed-loop control to substrate tension force.
As further preferably, in step (d), following formula is preferably adopted to obtain described substrate position revision directive S
1: S
1=μ
p* (F
r-F), wherein μ
prepresent that tension fluctuation is to the factor of influence of substrate position, and its setting value is 0.05 ~ 0.15; In addition, following formula is preferably adopted to obtain described nozzle location modify instruction S
f: S
f=μ
m* (F
r-F), wherein μ
mrepresent that tension fluctuation is to the factor of influence of nozzle location, and its setting value is 0.03 ~ 0.10.
In general, the above technical scheme conceived by the present invention compared with prior art, mainly possesses following technological merit:
1, affect by considering intercoupling of spray printing microenvironment temperature, humidity and shower nozzle voltage, system, closed-loop control is carried out to multiple technological parameter, system, closed-loop control is carried out to multiple technological parameter, correspondingly reduce the fluctuation of microenvironment humiture, the required precision of spray nozzle voltage, reduce microenvironment-voltage each other coupled relation to the entire effect of system, improve stability and the antijamming capability of system works;
2, affect by considering intercoupling of substrate tension force, substrate position and nozzle location, system, closed-loop control is carried out to multiple technological parameter, correspondingly improve tension stability, substrate position and nozzle location kinematic accuracy, reduce the location of coupled relation on substrate and the impact of distortion each other of tension force-position, support the quality conformance realizing EFI print device;
3, by adopting distributed temperature control system to carry out closed-loop control to sensitive position temperature multiple in microenvironment respectively, reducing EFI print product reel-to-reel preparation process itself to the impact of temperature control uniformity difference, and being easy to expansion;
4, in addition, by studying the factor of influence of parameter to spray printing precision such as spray printing microenvironment humiture, substrate tension force and set, test shows to significantly improve print quality prepared by EFI print product reel-to-reel, possess simultaneously adapt to that all kinds of complex working condition, antijamming capability are strong, the feature such as high efficiency and high reliability, be thus particularly useful for the preparation process of reel-to-reel EFI printed product.
Accompanying drawing explanation
Fig. 1 is according to the many physical quantitys cooperative control method process chart towards EFI print procedure constructed by the present invention;
Fig. 2 is the theory diagram for showing the humiture-voltage Hybrid mode process according to the preferred embodiment for the present invention;
Fig. 3 is the theory diagram for showing the tension force-Position Hybrid Control process according to the preferred embodiment for the present invention;
Fig. 4 is the unitary construction schematic diagram printing reel-to-reel preparation system according to the EFI of the preferred embodiment of the present invention;
In all of the figs, identical Reference numeral is used for representing identical element or structure, wherein:
20-dispensing shaft 21-flexible base board 22-reel feeding pair roller 23-substrate orientation vision system 24-substrate tension detect axle 25-ultrasonic sensor 26-floats roller 27-Deviation rectifier 28-nozzle platform 29-jet printing process CCD Observation vision system 30-jet observation vision system 31-spray nozzle voltage system 32-microenvironment temperature control system 33-microenvironment MCS 34-solidification equipment 35-and floats roller 36-collecting shaft 37-microenvironment seal bootr
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.In addition, if below in described each embodiment of the present invention involved technical characteristic do not form conflict each other and just can mutually combine.
Fig. 4 is the unitary construction schematic diagram printing reel-to-reel preparation system according to the EFI of the preferred embodiment of the present invention.In the diagram, 20 is dispensing shaft, 21 is flexible base board, 22 is reel feeding pair roller, 23 is substrate orientation system, i.e. the 3rd vision system, 24 is substrate tension detect axle, 25 is ultrasonic sensor, 26 is floating roller, 27 is Deviation rectifier, 28 for configuring the nozzle platform of Three Degree Of Freedom drive unit, 29 is the second vision system also i.e. jet printing process CCD Observation vision system, 30 is First look system also i.e. jet CCD Observation vision system, 31 is spray nozzle voltage system, 32 is microenvironment temperature control system, 33 is microenvironment MCS, 34 is solidification equipment, 35 is vacuum handling roller, 36 is collecting shaft, 37 is microenvironment seal bootr.Tension detect axle is as the tension pick-up detecting substrate tension force, and ultrasonic sensor is for detecting the Y-direction contraposition deviation of substrate.Visible referring to Fig. 4, the flexible base board 21 of pending EFI print is delivered to via the reel feeding pair roller 22 of upstream extremity the closed spray printing microenvironment 37 being positioned at zone line from dispensing shaft 20, the spray printing of required product is completed by the nozzle 28 of configuration Three Degree Of Freedom drive unit, completed the solidification process of product by solidification equipment 34 after completing, then be delivered to collecting shaft 36 via the vacuum handling roller 35 of downstream and complete rewinding work, complete electric jet printing process thus.
Due to the specific physical performance of thin-film material, easily occur that when overtension distortion is even ruptured, affect product quality, in EFI print product reel-to-reel preparation process, if overtension will cause substrate to occur and expect the distortion do not conformed to, making nozzle produce position error causes spray printing product to occur larger scale error, produces substandard products; Film span in actual production is longer, easily occur when tension force is too small folding, wrinkling, because the factors such as the frictional force skewness such as guide roller, mechanical erection error, noncontinuity feeding, frequent start-stop and substrate elastic modelling quantity be uneven very easily cause substrate tension distribution uneven, thus make substrate produce sideslip, have a strong impact on the aligning accuracy of substrate.Therefore, substrate tension force, substrate position and nozzle location are mutual couplings, interactive, must consider and systematically adjust in real time.
Meanwhile, because nozzle produces jet under electrostatic field, fluidic vectoring thrust is the key of EFI print product preparation quality, in order to ensure that the quality needs of spray printing product adjust the voltage of electrostatic field or the height of nozzle distance substrate in real time according to the effect of spray printing on the shape of jet and substrate.Considering that the humiture of jet to microenvironment itself is more responsive, is necessary using the fluctuation of humiture as the factor of electrostatic field Voltage Cortrol.Therefore, the temperature of microenvironment, the humidity of microenvironment and spray nozzle voltage are mutual coupling equally, interactive, must consider and systematically adjust in real time.
Consider that the many physical quantitys of electric jet printing process intercouple impact, in order to carry out closed-loop control to multiple technological parameter on system, as shown in fig. 1, many physical quantitys cooperative control method of the present invention mainly comprises the following steps:
First step, the series of process parameter reference values of input associated substrate, nozzle and spray printing microenvironment, comprising substrate tension force reference value F
r, substrate position reference value P
r, nozzle location reference value M
r, spray nozzle voltage reference value u
r, spray printing microenvironment temperature reference value T
rwith humidity reference value H
r; Then gather the current voltage u obtained about nozzle, and the Current Temperatures T of spray printing microenvironment and current humidity H is in interior current state parameter value etc.
Second step, adopt three cover vision systems to observe EFI print procedure, wherein the jet state of first set vision system to nozzle is observed also referred to as jet printing process observation system; Second cover vision system performs realtime graphic to the sedimentation state of drop on substrate and detects also referred to as jet observation system; 3rd cover vision system is observed also referred to as substrate orientation system flexible base board.Processing result image in conjunction with first, second vision system merges the voltage feedback value e of delivery nozzle
u; Based on the location feedback value e of the processing result image delivery nozzle of the second cover vision system
m; Based on the processing result image output substrate location feedback value e of the 3rd cover vision system
p.Adopt respectively be configured at the tension detect sensor of substrate tension detect axle 24 and substrate orientation vision system 23 pairs of substrates current tensile F, substrate is along the current location P of X-axis and Y direction
xand P
yperform and detect and feedback; In addition, adopt grating scale to gather respectively to obtain about nozzle is at the current location M of X-axis, Y-axis and Z-direction
x, M
yand M
z.
Specifically, First look system 30 is preferably the jet being equipped with high-speed CCD camera and detects vision system, such as can be equipped with the industrial CCD camera of frame speed more than 300fps, second vision system 29 is preferably the jet printing process being equipped with the relatively high CCD camera of pixel and detects vision system, such as, can be equipped with the industrial CCD camera of pixel value more than 5,000,000; Described substrate orientation system 23 is preferably the vision system being equipped with pixel relatively low CCD camera, be such as equipped with pixel value higher than 1,300,000 industrial CCD camera.Wherein the second vision system and substrate orientation vision system are preferably installed as one with nozzle, move simultaneously; In addition, the CCD camera lens in the second vision system can tiltingly can be installed with camera, avoids nozzle real-time monitored spray printing pattern to facilitate.
In the present invention, exemplarily property illustrates, the described processing result image in conjunction with first, second vision system merges the voltage feedback value e of delivery nozzle
uprocess perform preferably by with under type: first the jet state of same nozzle under different voltage and the sedimentation state of drop on substrate are demarcated respectively in advance, obtain thus and present a series of voltage-image gradient data; Then the realtime graphic obtained by first, second vision system and above-mentioned gradient data match, and obtain current voltage value according to matching result, and this current voltage value and voltage reference value compare rear output voltage value of feedback e
u.
Third step, adopts the humiture of spray printing microenvironment-voltage mixed-control mode to the voltage of nozzle and spray printing microenvironment jointly to perform adjustment.In the process, by the Current Temperatures T of spray printing microenvironment and current humidity H and its reference value T
rand H
rcompare process, and comparative result is inputed to temperature controller and humidity controller respectively, the corresponding output control signal of these two controllers is to realize the temperature scaling factor of spray printing microenvironment and humidity closed-loop control; Meanwhile, consider that temperature, humidity can directly have an impact to injection stream state, indirectly cause larger spray nozzle voltage fluctuation, temperature controller and humidity controller are respectively based on described comparative result delivery nozzle voltage revision directive S in addition
tand S
h, by this spray nozzle voltage revision directive S
t, S
hwith described voltage feedback value e
uthe composite value S of three
t+ S
h-e
uas control inputs signal and with spray nozzle voltage reference value u
rcarry out summation process, then comparative result input voltage controller 31 is driven high pressure generator output voltage via voltage amplifier circuit, realize the closed-loop control to spray nozzle voltage thus.
Specifically, according to a preferred embodiment of the present invention, preferably adopt distributed temperature control mode to perform and the temperature scaling factor of spray printing microenvironment is operated.As shown in figs. 2 and 4, in microenvironment, arrange that multiple temperature sensor detects in real time and feeds back current location temperature T according to demand, this value of feedback after signal transacting with temperature reference value T
rcomparative result as the input signal of microenvironment temperature control system 32, microenvironment temperature control system is carried out process in real time to multiple signals respectively and is exported the control signal of heat generating core, heat generating core is acted on after drive circuit power is amplified, control the duty of heat generating core, and then the closed-loop control realized temperature, until microenvironment multiple spot operating temperature meets technological requirement.According to another preferred embodiment of the present invention, temperature controller is according to the factor of influence μ of temperature to spray nozzle voltage
toutput voltage control signal S
t=μ
t* (T
r-T) as the part of voltage control signal, wherein μ
trepresent that temperature is to the factor of influence of spray nozzle voltage, and its number range can be set as 0.15 ~ 0.45 after more actual contrast test.Consider actual demands such as raising the efficiency, easily extensible, debugging are convenient, the scheme that one piece of interface board is connected with polylith temperature control plate can be adopted.Interface board realizes the communication of temperature control plate and industrial computer and leaves redundant interface.Temperature sensor detects in real time and feeds back the actual temperature of thermal head, temperature collection circuit is carried out input temp controller after AD conversion, itself and preset value compare by temperature controller, export control signal, drive heater element work by drive circuit, thus realize the closed-loop control of temperature.
In addition, preferably by single-point MCS, humidity closed-loop control is performed to humidity near working region in microenvironment.As shown in Figures 2 and 4, humidity measurement instrument detects in real time and feeds back current location humidity H, this feedback directly after signal transacting with humidity reference value H
rcomparative result as the input signal of microenvironment MCS 33, control signal is sent to drying instrument, control the closed-loop control that drying instrument work realizes microenvironment humidity.According to a preferred embodiment of the present invention, humidity controller is according to the factor of influence μ of humidity to spray nozzle voltage
houtput voltage control signal S
h=μ
h* (H
r-H) as the part of voltage control signal, wherein μ
hrepresent that humidity is to the factor of influence of spray nozzle voltage, and its numerical value can be set as 0.50 ~ 0.85 after more actual test.The present invention considers the Changing Pattern that in jet printing process, ambient humidity curve rises, and only adopts dry absorption to meet the demands.
4th step, adopts the position of tension force-Position Hybrid Control mode to the tension force of substrate and position, nozzle jointly to perform adjustment.In the process, for the tension adjustment of substrate, by the current tensile F of substrate and tension force reference value F
rcompare, and comparative result is inputed to the corresponding output control signal of tension controller, realize the closed-loop control to substrate tension force thus; Meanwhile, consider that substrate tension variation can directly cause the change in location of substrate to affect the position adjustment of substrate itself and the position adjustment of nozzle, cause substrate and nozzle to produce larger position error, therefore tension controller is based on described comparative result output substrate position correction instruction simultaneously S
1with nozzle location modify instruction S
f, and using it as the part of substrate position and nozzle location input signal.
In the process, according to the preferred embodiment of the present invention, the control element that can change Driving Torque is preferably adopted to realize.More specifically, substrate tension force is controlled, by the tension pick-up being configured at tension detect axle 24, detection in real time and feedback are performed to substrate tension force F, and by value of feedback and described substrate tension force reference value F
rbetween comparative result input to tension controller, tension controller exports control signal to changing the magnetic powder cluth of torque, realizes closed-loop tension control process thus.
According to another preferred embodiment of the present invention, following formula is preferably adopted to obtain described substrate position revision directive S
1: S
1=μ
p* (F
r-F), wherein μ
prepresent that tension fluctuation is to the factor of influence of substrate position, and its numerical value can be set as 0.05 ~ 0.15 through more actual test; In addition, following formula is preferably adopted to obtain described nozzle location modify instruction S
f: S
f=μ
m* (F
r-F), wherein μ
mrepresent that tension fluctuation is to the factor of influence of nozzle location, and its numerical value can be set as 0.03 ~ 0.10 through more actual test.
As shown in Figures 3 and 4, in the process of closed-loop tension control, tension controller output substrate position control revision directive simultaneously S
1, this revision directive and substrate position reference instruction Pr synthesize, as the input signal of substrate position controller.Substrate position controller processes it, exports two instructions and substrate X to Shifted Reference instruction P
xr, substrate Y-direction Shifted Reference instruction P
yr.X to displacement controller to X to Shifted Reference instruction P
xrthe result of calculation of the substrate current position signal fed back with substrate orientation vision system 23 processes, and output signal controls substrate conveying rolls 22 (for blowing end) action, realizes substrate X to feeding.Deviation correcting device 27 couples of substrate Y-direction Shifted Reference instruction P
yrthe substrate Y-direction contraposition deviation P fed back with ultrasonic sensor 25
yresult of calculation process, export the control signal of Deviation rectifier 27, the trace of error correct device 27 in X-Y plane rotates, and then realizes the contraposition of substrate Y-direction and control.
Equally as shown in Figures 3 and 4, in the process of closed-loop tension control, tension controller delivery nozzle position control revision directive simultaneously S
f, this revision directive and nozzle location reference instruction Mr synthesize, as the input signal part of nozzle location controller.By nozzle location value of feedback e
mwith tension controller delivery nozzle position correction instruction S
fwith described nozzle location reference value M
rmerging treatment is as the input signal of nozzle location controller, and nozzle location controller delivery nozzle X is to the control instruction M of, Y-direction and Z-direction
xr, M
yrand M
yr.The X of described nozzle is to current location M
xbeing detected in real time to grating scale by X and feed back, this value of feedback and nozzle location controller export X to Shifted Reference command M
xrprocess, and to export X to the control signal of motor to realize nozzle X to position-force control; The current Y-direction deviation M of described nozzle
ydetected in real time by Y-direction grating scale and feed back, this value of feedback and described nozzle Y-direction Shifted Reference instruction P
yrprocess, and export the control signal of Y-direction motor to realize nozzle Y-direction position-force control; The current Z-direction deviation M of described nozzle
zdetected in real time by Z-direction grating scale and feed back, this value of feedback and described nozzle Z-direction Shifted Reference instruction P
zrprocess, and export the control signal of Z-direction motor to realize nozzle Z-direction position-force control.
Finally, after each state parameter of substrate, nozzle and microenvironment all meets technological requirement, electric jet printing operation can be carried out, continue to carry out real-time closed-loop control until spray printing completes to above-mentioned parameter before spray printing completes, be cured process, rewinding after spray printing completes, realize the preparation process of EFI print product thus.
Those skilled in the art will readily understand; the foregoing is only preferred embodiment of the present invention; not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. the many physical quantitys cooperative control method towards reel-to-reel EFI print procedure, wherein flexible base board is delivered to spray printing region from dispensing shaft via the reel feeding pair roller of upstream extremity, for ensureing that this region of humiture, spray printing region is configured to the microenvironment pattern closed, nozzle forms jet spray on substrate and goes out required pattern under electric field action, after overcuring process, substrate is delivered to collecting shaft via the vacuum handling roller of downstream again, and it is characterized in that, the method comprises the following steps:
A the series of process parameter reference values of () input associated substrate, nozzle and spray printing microenvironment, comprising substrate tension force reference value F
r, substrate position reference value P
r, nozzle location reference value M
r, spray nozzle voltage reference value u
r, spray printing microenvironment temperature reference value T
rwith humidity reference value H
r; Then gather the current voltage u obtained about nozzle, and the Current Temperatures T of spray printing microenvironment and current humidity H is in interior current state parameter value;
B () adopts three cover vision systems to observe EFI print procedure, wherein first set vision system is used for observing the jet state of nozzle, second cover vision system detects for performing realtime graphic to the sedimentation state of drop on substrate, and the 3rd cover vision system is used for observing flexible base board position; Processing result image in conjunction with first, second vision system merges the voltage feedback value e of delivery nozzle
u, based on the location feedback value e of the processing result image delivery nozzle of the second cover vision system
m; Simultaneously based on the processing result image output substrate location feedback value e of the 3rd cover vision system
p; In addition, tension detect sensor and substrate orientation system is adopted respectively to the current tensile F of substrate, substrate along the current location P of X-axis and Y direction
xand P
yperform and detect in real time and feedback; And adopt grating scale to gather acquisition respectively about nozzle is at the current location M of X-axis, Y-axis and Z-direction
x, M
yand M
z;
C () adopts the humiture of spray printing microenvironment-voltage mixed-control mode to the voltage of nozzle and spray printing microenvironment jointly to perform adjustment:
In the process, by the Current Temperatures T of spray printing microenvironment and current humidity H and its reference value T
rand H
rcompare process, and comparative result is inputed to temperature controller and humidity controller respectively, the corresponding output control signal of these two controllers is to realize the temperature scaling factor of spray printing microenvironment and humidity closed-loop control; Temperature controller and humidity controller are respectively based on described comparative result delivery nozzle voltage revision directive S
tand S
hthe voltage pulsation caused is changed, this voltage revision directive S in order to reduce humiture
t, S
hwith described voltage feedback value e
ujointly with described spray nozzle voltage reference value u
rcompare process, then by comparative result input voltage controller to realize closed-loop control to spray nozzle voltage;
D () adopts the position of tension force-Position Hybrid Control mode to the tension force of substrate and position, nozzle jointly to perform adjustment:
In the process, for the tension adjustment of substrate, by the current tensile F of substrate and described tension force reference value F
rcompare, and comparative result is inputed to the corresponding output control signal of tension controller, realize the closed-loop control to substrate tension force thus; This tension controller is based on above-mentioned current tensile F and described tension force reference value F
rcomparative result, simultaneously output substrate position correction instruction S
1with nozzle location modify instruction S
f, and using it as the part of substrate position and nozzle location input signal in order to improve the positioning precision of substrate and nozzle;
For the position adjustments of substrate, by described substrate position revision directive S
1with described substrate position reference value P
rmerging treatment is as the input signal of substrate position controller, and corresponding output is to the position control instruction P of substrate X-axis and Y direction
xr, P
yr; These position control instructions P
xr, P
yrrespectively with the current location P of substrate
x, P
yprocess mutually, and corresponding output control signal realizes the closed-loop control to substrate X-axis and Y-axis position deviation thus;
For the position adjustments of nozzle, by described nozzle location modify instruction S
f, nozzle location value of feedback e
mwith nozzle location reference value M
rmerging treatment is as the input signal of nozzle location controller, and corresponding output is to the position control command M of nozzle X-axis, Y-axis and Z-direction
xr, M
yrand M
zr; These position control command M
xr, M
yrand M
zrrespectively with the current location M of nozzle
x, M
yand M
zprocess mutually, and corresponding output control signal is to realize the closed-loop control to nozzle X-axis, Y-axis and Z axis position deviation;
E (), after each state parameter of substrate, nozzle and spray printing microenvironment all meets technological requirement, carries out EFI printing, continue to carry out closed-loop control to above-mentioned parameter, until complete whole EFI print procedure before spray printing completes.
2. many physical quantitys cooperative control method as claimed in claim 1, is characterized in that, in step (b), and the industrial CCD camera of described First look system disposition frame speed more than 300fps; Described second vision system and nozzle integrated installation are integrated and synchronizing moving, and are equipped with the industrial CCD camera of pixel value more than 5,000,000; Described 3rd cover vision system be equipped with pixel value higher than 1,300,000 industrial CCD camera.
3. many physical quantitys cooperative control method as claimed in claim 1 or 2, it is characterized in that, in step (c), adopt distributed temperature control mode to perform to operate the temperature scaling factor of spray printing microenvironment: in spray printing microenvironment, arrange that multiple temperature sensor detects in real time and feeds back the current temperature value of each layout points, these current temperature value after signal transacting respectively with described temperature reference value T
rcompare, comparative result is as the input signal of multi-channel temperature control device; This multi-channel temperature control device processes in real time multiple signals respectively and exports control signal to control the duty of heat generating core, thus realizes the temperature scaling factor to spray printing microenvironment.
4. many physical quantitys cooperative control method as claimed in claim 1 or 2, is characterized in that, in step (c), adopts following formula to obtain described spray nozzle voltage revision directive S
t:
S
t=μ
t* (T
r-T), wherein μ
trepresent that temperature is to the factor of influence of spray nozzle voltage, its setting value is 0.15 ~ 0.45;
In addition, adopt following formula to obtain described spray nozzle voltage revision directive S
h:
S
h=μ
h* (H
r-H), wherein μ
hrepresent that humidity is to the factor of influence of spray nozzle voltage, and its setting value is 0.50 ~ 0.85.
5. many physical quantitys cooperative control method as claimed in claim 1 or 2, it is characterized in that, in step (d), the control element that employing can change Driving Torque performs the closed loop control operations to substrate tension force: the tension detect axle first by being configured with tension pick-up detects in real time and feeds back the current tensile value of substrate, this current tensile value and described tension force reference value F
rcompare, comparative result is as the input signal of tension controller; This tension controller is tackled this input signal mutually and is processed in real time and export control signal to magnetic powder cluth to change Driving Torque, thus realizes the closed-loop control to substrate tension force.
6. many physical quantitys cooperative control method as claimed in claim 5, is characterized in that, in step (d), adopts following formula to obtain described substrate position revision directive S
1:
S
1=μ
p* (F
r-F), wherein μ
prepresent that tension fluctuation is to the factor of influence of substrate position, and its setting value is 0.05 ~ 0.15;
In addition, adopt following formula to obtain described nozzle location modify instruction S
f:
S
f=μ
m* (F
r-F), wherein μ
mrepresent that tension fluctuation is to the factor of influence of nozzle location, and its setting value is 0.03 ~ 0.10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310728496.XA CN103722909B (en) | 2013-12-25 | 2013-12-25 | A kind of many physical quantitys cooperative control method towards reel-to-reel EFI print procedure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310728496.XA CN103722909B (en) | 2013-12-25 | 2013-12-25 | A kind of many physical quantitys cooperative control method towards reel-to-reel EFI print procedure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103722909A CN103722909A (en) | 2014-04-16 |
| CN103722909B true CN103722909B (en) | 2016-04-13 |
Family
ID=50447309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310728496.XA Active CN103722909B (en) | 2013-12-25 | 2013-12-25 | A kind of many physical quantitys cooperative control method towards reel-to-reel EFI print procedure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103722909B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109306527A (en) * | 2017-07-26 | 2019-02-05 | 肖佳楠 | Electrospinning direct-writing closed loop control method |
| CN109823049B (en) * | 2018-12-26 | 2019-12-24 | 华中科技大学 | Multi-target jet frequency control method and device for jet printing liquid drops |
| CN109823050B (en) * | 2018-12-29 | 2019-12-24 | 华中科技大学 | Multi-stage positioning error compensation method and device for liquid drop ejection for ink-jet printing |
| CN112976838B (en) * | 2021-02-02 | 2022-02-18 | 昆山大世界油墨涂料有限公司 | Iterative learning speed synchronous control method for paper conveying mechanism of ink-jet printer |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1480333A (en) * | 2002-09-03 | 2004-03-10 | 杭州宏华数码科技股份有限公司 | Method for adjusting driving voltage of piezoelectric type ink jet printing header and adjusting device |
| CN103407290A (en) * | 2013-07-18 | 2013-11-27 | 华中科技大学 | Three-dimensional structure preparation method and device based on electronic jet printing |
| CN103407293A (en) * | 2013-07-23 | 2013-11-27 | 广东工业大学 | Micro-nano-size three-dimensional printer based on near-field electrospinning direct writing technology |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10250130A (en) * | 1997-03-14 | 1998-09-22 | Canon Inc | Printing control unit for thermal line printer, printing control method for thermal line printer, and printing unit |
| JP4403707B2 (en) * | 2003-03-25 | 2010-01-27 | リコープリンティングシステムズ株式会社 | Ink droplet discharge state detection apparatus and ink jet recording apparatus |
| US7938502B2 (en) * | 2007-09-19 | 2011-05-10 | Seiko Epson Corporation | Flushing method for fluid ejecting device and fluid ejecting device |
| JP5182000B2 (en) * | 2008-10-14 | 2013-04-10 | セイコーエプソン株式会社 | Liquid ejecting apparatus and control method thereof |
-
2013
- 2013-12-25 CN CN201310728496.XA patent/CN103722909B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1480333A (en) * | 2002-09-03 | 2004-03-10 | 杭州宏华数码科技股份有限公司 | Method for adjusting driving voltage of piezoelectric type ink jet printing header and adjusting device |
| CN103407290A (en) * | 2013-07-18 | 2013-11-27 | 华中科技大学 | Three-dimensional structure preparation method and device based on electronic jet printing |
| CN103407293A (en) * | 2013-07-23 | 2013-11-27 | 广东工业大学 | Micro-nano-size three-dimensional printer based on near-field electrospinning direct writing technology |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103722909A (en) | 2014-04-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103722909B (en) | A kind of many physical quantitys cooperative control method towards reel-to-reel EFI print procedure | |
| CN105328902A (en) | 3-D printer having motion sensors | |
| Barton et al. | Control of high-resolution electrohydrodynamic jet printing | |
| US9796183B2 (en) | Multifunctional electrohydrodynamic inkjet printing device and printing method using the same | |
| CN103592981B (en) | A kind of multiparameter cooperative control method being suitable for flexible electronic Tag Packaging process | |
| CN109823049A (en) | A kind of the multiple target injection frequency control method and equipment of spray printing drop | |
| EP3235355B1 (en) | 3d ink jet printing method | |
| CN102161261A (en) | Multi-station jet-printing system of flexible printed circuit board | |
| CN205614679U (en) | Industrial robot system sprays paint | |
| CN209666271U (en) | More material 3D printing devices that stretchable electronic product is integrated | |
| CN104309338A (en) | Closed-loop control method for electrospining direct writing technology | |
| Jin et al. | Droplet deviation modeling and compensation scheme of inkjet printing | |
| CN203246189U (en) | A power coupled inkjet printing system | |
| CN103645751B (en) | The nanofiber diameter control method regulated based on substrate speed and control device | |
| CN105750158A (en) | Precise dispensing system | |
| CN104412193A (en) | Stage device, and specimen observation device | |
| CN111836713A (en) | Printer filament feed monitoring | |
| CN103946416A (en) | Direct-writing vacuum evaporating system and method thereof | |
| CN105690767A (en) | Robot applicable to 3D printing | |
| CN110385913B (en) | High-positioning-precision electrohydrodynamic jet printing method | |
| JP2014192213A (en) | Electronic component mounting device | |
| JP5180925B2 (en) | Paste coating method and paste coating apparatus | |
| CN108748150A (en) | The inexpensive real-time compensation apparatus and method of object manipulator processing | |
| CN102699912B (en) | Pick-and-placement control method and system for fragile materials | |
| CN108466485B (en) | Near field electrohydrodynamic spray printing operating voltage has the control method of short delaing time |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |