CN205871499U - A ink droplet spraying state adjustment system for piezoelectric type printing shower nozzle - Google Patents
A ink droplet spraying state adjustment system for piezoelectric type printing shower nozzle Download PDFInfo
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- CN205871499U CN205871499U CN201620508588.6U CN201620508588U CN205871499U CN 205871499 U CN205871499 U CN 205871499U CN 201620508588 U CN201620508588 U CN 201620508588U CN 205871499 U CN205871499 U CN 205871499U
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Abstract
The utility model provides an ink droplet spraying state adjustment system for piezoelectric type printing shower nozzle belongs to the inkjet technology field. This system includes computer computing platform, shower nozzle drive controller, piezoelectric type printing shower nozzle and CCD camera, shower nozzle drive controller one end is connected with computer computing platform, the other end with the piezoelectric type is printed the shower nozzle and is connected, the CCD camera is connected with computer computing platform, shower nozzle drive controller produces and is suitable for the required drive signal of piezoelectric type printing shower nozzle, carries out drive signal's time schedule control simultaneously, the piezoelectric type is printed the shower nozzle and produce the fluctuation under the drive signal's that shower nozzle drive controller provided effect in black chamber, and the undulant orifice of propagating forms the ink droplet, the state that the ink droplet that the shower nozzle erupted was printed to the piezoelectric type is caught to the CCD camera.
Description
Technical field
This utility model belongs to inkjet technology field, is specifically related to a kind of ink droplet for piezoelectric type printing head and sprays
State of penetrating adjusts system.
Background technology
Inkjet technology be one under the control of the computer, by by the droplet jet of picoliters magnitude at multiple printing base
On material, it is achieved at high speed, high-quality dot matrix, patterned typography without plate.Technique has little, the energy consumption of pollution
Low, processing technique is simple, have the processed edge such as product of stereochemical structure without contacting with base material, be suitable for process.At present, may be used
Ink for printing also can possess certain physical characteristic, chemical characteristic.It is different from traditional document print, inkjet technology
Nowadays have become as the technological means of a low-cost and high-precision in small scale in circuitry retrofit, and be considered as not send a telegram here
One important channel of road processing industry industry development.At present, in commercial Application, the use to piezoelectric type printing head is the widest
General.Owing to inkjet technology is various in technology field applicable cases, piezoelectric type shower nozzle must under different duties with
Meet different application demands.To this end, industrial most common method is according to selected piezoelectric type printing head parameter, institute
The ink characteristics that uses and injection ink droplet conditions dictate etc. is adjusted parameter in shower nozzle drive waveforms, different prints point with satisfied
The requirement of resolution, printing effect and print quality.
But owing to the drive waveforms of shower nozzle comprising many adjustable parameters, based on artificial experience or tune based on grid
Perfect square formula not only wastes time and energy, and during the use of shower nozzle, and along with the drift of shower nozzle state, (mainly piezoelectric ceramics is tired
Caused by labor phenomenon), it is consistent that shower nozzle state is difficult to long-term holding, significantly limit the application of inkjet technology.
Utility model content
The purpose of this utility model is to solve a difficult problem present in above-mentioned prior art, it is provided that a kind of piezoelectric type that is used for is beaten
Print shower nozzle ink droplet spray regime adjust system, overcome to piezoelectric type printing head adjust time-consuming long, cannot be at print procedure
In quickly follow the tracks of shower nozzle state drifts away situation, it is achieved piezoelectric type printing head is quick and precisely adjusted, is capable of air exercise simultaneously
The function that print shower nozzle real-time tracking adjusts.
This utility model is achieved through the following technical solutions:
A kind of ink droplet spray regime for piezoelectric type printing head adjusts system, calculates platform, shower nozzle including computer
Drive controller, piezoelectric type printing head and ccd video camera；
Described shower nozzle drives controller one end to be connected with computer calculating platform, the other end and described piezoelectric type printing head
Connect；
Described ccd video camera calculates platform with computer and is connected；
Described shower nozzle drives controller to produce the driving signal being suitable for needed for piezoelectric type printing head, is driven simultaneously
The sequencing contro of signal；
Described piezoelectric type printing head produces under the effect driving signal that shower nozzle drives controller to provide in ink chamber
Fluctuation, wave propagation to spray orifice, form ink droplet；
The state of the ink droplet that described ccd video camera capture piezoelectric type printing head ejects；
The ink droplet that ccd video camera is captured by described computer calculating platform carries out parameter extraction and obtains the sign ginseng of ink droplet
Number, is calculated the ink droplet drive waveforms characterization parameter of optimization, and the ink droplet drive waveforms characterization parameter of this optimization passes to spray
Head driving controller, drives controller to control piezoelectric type printing head extrusion ink droplet by shower nozzle, it is achieved piezoelectric type is printed spray
The real-time adjustment of head.
Described ccd video camera is arranged on the position that the dead ahead of described piezoelectric type printing head is on the lower side, and it is beaten with piezoelectric type
The horizontal range of print shower nozzle is 0.5-0.6 rice, is at 0.3-0.5 rice with the vertical dimension of piezoelectric type printing head.
Described ccd video camera uses high-speed industrial ccd video camera, and minimum exposure time is at musec order or following；
The amplification of the front end object lens of described ccd video camera is more than 120 times.
Described computer calculate platform include ink droplet state parameter extraction unit, drive waveforms characterization parameter extraction unit and
There is the adjustment unit of feedback mechanism, specific as follows:
Described ink droplet state parameter extraction unit uses the gray level image that Threshold Segmentation Algorithm obtains from described ccd video camera
In extract the profile of ink droplet, determine the physical distance corresponding to each pixel, based on the absolute axial symmetry of ink droplet it is assumed that calculate
The quantity of ink drop size, trailing length and satellite ink droplet；
Described drive waveforms characterization parameter extraction unit is according to the quantity of described ink drop size, trailing length and satellite ink droplet
And piezoelectric type printing head operation principle, record the drive waveforms characterization parameter corresponding to this ink droplet；
The described adjustment unit with feedback mechanism is according to drive waveforms characterization parameter corresponding to current ink droplet and phase
Hope the gap of the drive waveforms characterization parameter of ink droplet, use artificial bee colony algorithm to be optimized, show that an ink droplet optimized drives
Dynamic waveform characterization parameter, passes to the ink droplet drive waveforms characterization parameter of this optimization shower nozzle and drives controller.
Described shower nozzle drive controller include shell, described shell be arranged over driver CAN communication groove
Groove is exported with piezoelectric type printing head holding wire；
At described shell built with driver control module, this driver control module includes that microcontroller circuit, CAN are total
Line telecommunication circuit, driving signal generating circuit and power circuit；
Described microcontroller circuit includes STC12C5A single-chip microcomputer and peripheral circuit thereof, and it is received by CAN and calculates
Machine calculates the drive waveforms of platform transmission and drives parameter and the voltage of piezoelectric type printing head and sequencing contro；
Described CAN telecommunication circuit includes TJA1050 and peripheral circuit thereof, it is achieved the string of described STC12C5A single-chip microcomputer
Row communication interface and the physical transformation of CAN communication interface；
Being provided with CAN communication interface in described CAN telecommunication circuit, it is by described CAN and computer
Calculating platform is connected, and this CAN communication interface is positioned at shower nozzle and drives the driver CAN communication above controller housing recessed
At groove；
Described driving signal generating circuit includes bipolarity serial digital-analog conversion chip AD5752 and peripheral circuit thereof, produces
It is suitable for the required voltage signal of piezoelectric type printing head；
Being provided with piezoelectric type printing head holding wire output interface on described driving signal generating circuit, it passes through piezoelectric type
Printing head holding wire is connected with piezoelectric type printing head, and this piezoelectric type printing head holding wire output interface is positioned at shower nozzle and drives
Piezoelectric type printing head holding wire output groove above controller housing；
Described power circuit includes LM2940 and peripheral circuit thereof, and system+24V DC source is depressured to+5V, for micro-control
Device circuit processed, CAN telecommunication circuit, driving signal generating circuit and other+5V system power supply.
The time t of Maximum Forward Voltage is risen to by no-voltage when driver control module receivesrP, Maximum Forward Voltage
VP, Maximum Forward Voltage duration tdP:, dropped to the time t of no-voltage by Maximum Forward VoltagefP, no-voltage lasting
Time tiTime, the positive polarity trapezoidal wave needed for described analog-digital chip AD5752 generation；
The time t of inverse peak voltage is dropped to by no-voltage when driver control module receivesrN, inverse peak voltage
VN, inverse peak voltage duration tdN, risen to the time t of no-voltage by inverse peak voltagefN: time, described digital-to-analogue turns
Change the negative polarity trapezoidal wave needed for chip AD5752 produces.
Utilize the ink droplet spray regime method of adjustment for piezoelectric type printing head that described system realizes, including:
(1) the drive waveforms characterization parameter t of expectation ink droplet, is setrP,VP,tdP,tfP,ti,trN,VN,tdN,tfN；
(2), the ink droplet ejected by ccd video camera capture piezoelectric type printing head；
(3), extracting ink droplet state parameter, described ink droplet state parameter includes ink drop size, trailing length and satellite ink droplet
Quantity；
(4) the drive waveforms characterization parameter of current ink droplet, is extracted；
(5), the drive waveforms characterization parameter of the drive waveforms characterization parameter of current ink droplet with expectation ink droplet is carried out one by one
Relatively, if the error of each drive waveforms characterization parameter is all in the range of accepting, then by the drive waveforms table of current ink droplet
Levy parameter as the drive waveforms characterization parameter optimized, entrance (7th) step；If gap is not in the range of accepting, enter (6th)
Step；
(6), utilize artificial bee colony algorithm that the drive waveforms characterization parameter of current ink droplet is optimized, draw the ink of optimization
Drip drive waveforms characterization parameter；
(7), the drive waveforms characterization parameter of optimization is exported shower nozzle and drives controller；
(8), judging whether to need the drive waveforms characterization parameter of expectation ink droplet is updated, if updated, then entering
(9th) step；Do not update, then return (2nd) step；
(9), using the drive waveforms characterization parameter of current ink droplet as the drive waveforms characterization parameter of expectation ink droplet, then return
Return (2nd) step.
In described step (4) during extracting drive waveforms characterization parameter, the evaluation function of setting is as follows,
Wherein, w (1) and w (2) is for setting coefficient, and V is current ink drop size, and Vt is expectation droplet volume, and Ns is satellite ink
Drip quantity.
Described drive waveforms characterization parameter needs to meet following condition:
trP+tdP+tfP+ti+trN+tdN+tfN≤Ts-20us
ti≤2(trP+tdP+tfP)
VP≥VN
VP+VN≤28V
VP,VN≥5V
trP,tdP,tfP,ti,trN,tdN,tfN≥0.1us
trP,tfP,trN,tfN≤0.5us
Wherein, Ts is the working cycle of piezoelectric type printing head.
Described step (5) accept within scope is positive and negative 5%.
Compared with prior art, the beneficial effects of the utility model are: this utility model is by high speed CCD camera and ties
Close ink droplet state parameter extraction algorithm, drive waveforms characterization parameter extraction algorithm, it is achieved that ink droplet state of flight is carried out quickly,
In real time, accurate calibration；Be there is the adjustment algorithm of feedback mechanism by foundation, it is achieved that full-automatic to ink droplet state, accurately
Adjust, efficiently reduce manual operation and invalid operation, it is to avoid adjust based on artificial experience or adjust based on grid inaccurate
Really property；Meanwhile, this utility model can quickly follow the tracks of shower nozzle state drifts away situation, and drives for each shower nozzle fine tune accordingly
Dynamic waveform parameter, it is ensured that print quality.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of this utility model system.
Fig. 2 is that this utility model shower nozzle drives controller distribution schematic diagram.
Fig. 3 is that this utility model shower nozzle drives controller circuit structure schematic diagram.
Fig. 4 is that this utility model shower nozzle drives controller circuitry schematic diagram.
Fig. 5 is the structural representation of piezoelectric type printing head.
The schematic diagram of Fig. 6 piezoelectric type printing head drive waveforms.
Fig. 7 is that this utility model ink droplet spray regime adjusts working-flow figure.
In figure: 1 calculates platform for computer, and 2 drive controller for shower nozzle, and 3 is piezoelectric type printing head, and 4 image for CCD
Machine, 5 is ink droplet, and 6 is CAN, and 7 is piezoelectric type printing head holding wire, and 8 is driver CAN communication groove, and 9 is pressure
Electric-type printing head holding wire output groove, 10 drive controller housing for shower nozzle.
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model is described in further detail:
Seeing Fig. 1, this utility model includes ccd video camera for the ink droplet spray regime adjustment system of piezoelectric type printing head
4, computer calculates platform 1, shower nozzle drives controller 2, piezoelectric type printing head 3.
Computer calculates the ink droplet state that platform 1 is ejected by ccd video camera capture piezoelectric type printing head, by figure
As processing method obtains ink droplet state parameter, extract the sign corresponding to this ink droplet according to piezoelectric type printing head operation principle
Parameter.According to the gap of current ink droplet characterization parameter with expectation ink droplet characterization parameter, artificial bee colony algorithm is used to be optimized,
Go out an intended drive waveforms and drive parameter, drive controller to control piezoelectric type printing head extrusion ink droplet by shower nozzle, real
The now quick and precisely adjustment to piezoelectric type printing head.Meanwhile, according to the ink drop formation characteristic after optimizing, expectation ink droplet can be driven
Dynamic waveform parameter is modified, it is achieved the purpose adjusting printing head real-time tracking.
Ccd video camera 4 is responsible for the ink droplet state that capture piezoelectric type printing head ejects.Computer calculates platform 1 to be responsible for
The ink droplet collected is carried out parameter extraction, and then is realized dynamically by the ink-jet parameter intelligent adjustment algorithm with feedback mechanism
Adjust ink-jet shape in real time.Shower nozzle driving controller 3 is responsible for generation and is suitable for piezoelectric type printing head required voltage signal, simultaneously
It is driven the sequencing contro of signal.Piezoelectric type printing head 3 produces fluctuation, fluctuation under the effect of drive waveforms in ink chamber
Travel to spray orifice, form ink droplet.
Specifically, described ccd video camera 4 uses high-speed industrial ccd video camera, and minimum exposure time will be at musec order
Or below, in order to avoid causing persistence of vision, affect the identification of ink droplet profile.And front end object lens need to meet amplification at 120 times
Above.Time actually used, ccd video camera should be arranged on shower nozzle dead ahead position on the lower side, from shower nozzle horizontal range 0.5-0.6
Rice, is at 0.3-0.5 rice with the vertical dimension of piezoelectric type printing head.
It is that ink droplet spray regime adjusts system core part that described computer calculates platform 1, and it includes ink droplet state parameter
Extraction unit, drive waveforms characterization parameter extraction unit, there is the adjustment unit of feedback mechanism, specific as follows:
Described ink droplet state parameter extraction unit uses Threshold Segmentation Algorithm (directly to obtain from ccd video camera 4 from gray level image
) in extract the profile of ink droplet, determine that the physical distance corresponding to each pixel (first shoots scale under this enlargement ratio
(scale of 1 millimeter, have two kinds of 50 deciles and 100 deciles), sees a millimeter or the pixel of half millimeter of correspondence how many images,
It is divided by and is assured that the physical length of a pixel), based on the absolute axial symmetry of ink droplet it is assumed that calculate ink drop size, hangover
Length, these status informations of quantity of satellite ink droplet (i.e. little ink droplet around this ink droplet).
Described drive waveforms characterization parameter extraction unit (the most above-mentioned ink drop size, drags according to ink droplet state parameter information
Tail length and the quantity of satellite ink droplet) and piezoelectric type printing head operation principle, extract the drive waveforms corresponding to this ink droplet
Characterization parameter, i.e. 9 characterization parameters, extract and record the size of these 9 parameters exactly, these 9 values be by being manually set or
Arrived by algorithm search.Piezoelectric type printing head can produce fluctuation, wave propagation under the effect of drive waveforms in ink chamber
To spray orifice, form ink droplet.
The described adjustment unit with feedback mechanism is according to current ink droplet drive waveforms characterization parameter and expectation ink
Drip the gap of drive waveforms characterization parameter, use artificial bee colony algorithm to be optimized, draw an ink droplet drive waveforms optimized
Characterization parameter, drives controller 2 to control piezoelectric type printing head 3 by shower nozzle and extrudes ink droplet 5.Meanwhile, after can be according to optimizing
Ink drop formation characteristic, is modified expectation ink droplet drive waveforms characterization parameter (i.e. repeating above-mentioned " according to current ink droplet driving ripple
Shape characterization parameter and the gap of expectation ink droplet drive waveforms characterization parameter, use artificial bee colony algorithm to be optimized, draw one
The ink droplet drive waveforms characterization parameter optimized, drives controller 2 to control piezoelectric type printing head 3 by shower nozzle and extrudes ink droplet 5),
Realize the purpose that printing head real-time tracking is adjusted.
As shown in Figure 2, Figure 3 and Figure 4, described shower nozzle drives controller 2 to calculate the ink droplet after platform 1 optimizes according to computer
Drive waveforms characterization parameter, carries out signal conversion, and generation is suitable for piezoelectric type printing head 3 required voltage signal and (i.e. drives letter
Number, drive waveforms characterization parameter refers to the parameters of this voltage signal.), it is driven the sequencing contro of signal simultaneously.
Shower nozzle drives controller 2 to have a rectangle shell 10, drives the shell 10 of controller 2 to be arranged over 1 driver at shower nozzle
CAN communication groove 8 and 1 piezoelectric type printing head holding wire output groove 9.The shell 10 of controller 2 is driven at shower nozzle
Built with driver control module, this driver control module includes microcontroller circuit, CAN telecommunication circuit, drives letter
Number there is circuit and power circuit (as shown in Figure 3).Described microcontroller circuit is by STC12C5A single-chip microcomputer and peripheral circuit thereof
Composition, the drive waveforms being responsible for being received computer calculating platform 1 transmission by CAN 6 drives parameter and piezoelectric type to print spray
The voltage of head and sequencing contro.Described CAN telecommunication circuit is made up of TJA1050 and peripheral circuit thereof, is responsible for realization
The serial communication interface of STC12C5A single-chip microcomputer and the physical transformation of CAN communication interface.In this driver control module
CAN telecommunication circuit is provided with 1 CAN communication interface (interface being i.e. connected) with the CAN in Fig. 3, passes through CAN
Bus 6 calculates platform 1 with computer and is connected, and this CAN communication interface is positioned at shower nozzle and drives driving above controller housing 10
At dynamic device CAN communication groove 8.
Driving signal generating circuit in this driver control module by bipolarity serial digital-analog conversion chip AD5752 and
Its peripheral circuit forms, and responsible generation is suitable for piezoelectric type printing head 3 required voltage signal.Detailed process as shown in Figure 6, when
Driver control module receives the time t being risen to Maximum Forward Voltage by no-voltagerP, Maximum Forward Voltage VP, maximum just
To voltage duration tdP:, dropped to the time t of no-voltage by Maximum Forward VoltagefP, no-voltage duration tiTime,
Analog-digital chip AD5752 produces required positive polarity trapezoidal wave.
The time t of inverse peak voltage is dropped to by no-voltage when driver control module receivesrN, inverse peak voltage
VN, inverse peak voltage duration tdN, risen to the time t of no-voltage by inverse peak voltagefN: time, digital-to-analogue conversion core
Sheet AD5752 produces required negative polarity trapezoidal wave.
Described driving signal generating circuit is provided with 1 piezoelectric type printing head holding wire output interface, passes through piezoelectric type
Printing head holding wire 7 is connected with piezoelectric type printing head 3, and this piezoelectric type printing head holding wire output interface is positioned at shower nozzle and drives
At piezoelectric type printing head holding wire output groove 9 above movement controller shell 10.Described power circuit by LM2940 and
Peripheral circuit form, be responsible for system+24V DC source is depressured to+5V, for microcontroller circuit, CAN telecommunication circuit,
Drive signal generating circuit and other+5V system power supply.
As it is shown in figure 5, described piezoelectric type printing head 3 (i.e. drives signal generating circuit to produce at drive waveforms voltage
Voltage signal) effect under can ink chamber in produce fluctuation, wave propagation to spray orifice, formation ink droplet.When drive waveforms rising edge
Ink chamber expansion when acting on piezoelectric ceramics, when drive waveforms trailing edge acts on piezoelectric ceramics, ink chamber is shunk, and so may be used
Reach a crushing failure at high speed effect.Utilize pressure wave principle of stacking, behind one back action of superposition, reach to suppress ink chamber
Big ups and downs effect.
As shown in Figure 6, in order to more accurately control ink-jet ink-droplet shape, establish 9 characterization parameters of drive waveforms.I.e.
Drive waveforms can be characterized as nine parameter vector [trP,VP,tdP,tfP,ti,trN,VN,tdN,tfN], its implication is as follows:
trP: the time of Maximum Forward Voltage is risen to by no-voltage；
VP: Maximum Forward Voltage；
tdP: Maximum Forward Voltage duration；
tfP: the time of no-voltage is dropped to by Maximum Forward Voltage；
ti: no-voltage duration
trN: the time of inverse peak voltage is dropped to by no-voltage
VN: inverse peak voltage
tdN: inverse peak voltage duration；
tfN: the time of no-voltage is risen to by inverse peak voltage.
In setting up characteristic present parametric procedure, evaluation function need to be set, establishment principle use normalization forms of characterization (under
V and N in formulaS, all measure after these 9 parameters set and arrive),
Wherein, w (1) and w (2) is for setting coefficient, and V is current ink drop size, and Vt is expectation droplet volume, and Ns is satellite ink
Drip quantity.
In the adjustment unit with feedback mechanism, progressively reduce current ink droplet by artificial bee colony optimized algorithm and drive
Dynamic waveform characterization parameter and the gap expecting ink droplet drive waveforms characterization parameter.Need to set adjustable parameter during optimizing
Mobility scale, it is impossible to make its break bounds, otherwise cannot obtain printing effect.In the present embodiment, characterization parameter meets following condition
(on the premise of meeting following condition, use artificial bee colony optimized algorithm to obtain the ink droplet drive waveforms characterization parameter optimized):
trP+tdP+tfP+ti+trN+tdN+tfN≤Ts-20us
ti≤2(trP+tdP+tfP)
VP≥VN
VP+VN≤28V
VP,VN≥5V
trP,tdP,tfP,ti,trN,tdN,tfN≥0.1us
trP,tfP,trN,tfN≤0.5us
Wherein, Ts is the working cycle of piezoelectric type printing head.
As it is shown in fig. 7, ink droplet spray regime described in the utility model adjustment working-flow is as follows:
(1), set expectation ink droplet drive waveforms characterization parameter (the most authenticated suitably drives parameter (9 parameters),
The ink droplet of intended shape just can be extruded according to these 9 parameters.；
(2), the ink droplet ejected by ccd video camera capture piezoelectric type printing head；
(3), ink droplet state parameter extracts；
(4), drive waveforms characterization parameter extracts；
(5), current ink droplet drive waveforms characterization parameter compares with expectation ink droplet drive waveforms characterization parameter and (i.e. expects
9 parameters of ink droplet and 9 parameters of current ink droplet do difference one by one), if gap is accepting scope, (it is every for accepting scope
The error of one parameter is within positive and negative 5%) in, enter (7th) step；If gap is not in the range of accepting, enter the
(6) step；
(6), current ink droplet drive waveforms characterization parameter is optimized and (i.e. starts and have feedback mechanism by artificial bee colony algorithm
Adjustment cell operation)；
(7), drive waveforms characterization parameter exports shower nozzle and drives controller；
(8), judging whether to need expectation ink droplet drive waveforms characterization parameter is updated, if updated, then entering the
(9) step；Do not update, then return (2nd) step, i.e. carry out next round collection adjustment；
(9) (ink droplet before extruded is all to allow in expectation ink droplet error, to update expectation ink droplet drive waveforms characterization parameter
In the range of ink droplet, but sometimes, different according to practical situation, it is possible to current ink droplet is more suitable for, so now, just will current ink
9 parameters dripped as expectation ink droplet parameter, after the ink droplet extruded again just with 9 parameters of current ink droplet as standard.), return
Return (2nd) step, i.e. carry out next round collection adjustment.
Technique scheme is a kind of embodiment of the present utility model, for those skilled in the art,
On the basis of the utility model discloses principle, it is easy to make various types of improvement or deformation, be not limited solely to this reality
By the structure described by novel above-mentioned specific embodiment, the most previously described the most preferred, and the most restrictive
Meaning.
Claims (4)
1. the ink droplet spray regime for piezoelectric type printing head adjusts system, it is characterised in that: described for piezoelectric type
The ink droplet spray regime of printing head adjusts system and includes that computer calculates platform, shower nozzle drives controller, piezoelectric type to print spray
Head and ccd video camera；
Described shower nozzle drives controller one end to be connected with computer calculating platform, and the other end is with described piezoelectric type printing head even
Connect；
Described ccd video camera calculates platform with computer and is connected；
Described shower nozzle drives controller to produce the driving signal being suitable for needed for piezoelectric type printing head, is driven signal simultaneously
Sequencing contro；
Described piezoelectric type printing head produces fluctuation under the effect driving signal that shower nozzle drives controller to provide in ink chamber,
Wave propagation, to spray orifice, forms ink droplet；
The state of the ink droplet that described ccd video camera capture piezoelectric type printing head ejects.
Ink droplet spray regime for piezoelectric type printing head the most according to claim 1 adjusts system, it is characterised in that:
Described ccd video camera is arranged on the position that the dead ahead of described piezoelectric type printing head is on the lower side, itself and piezoelectric type printing head
Horizontal range is 0.5-0.6 rice, is at 0.3-0.5 rice with the vertical dimension of piezoelectric type printing head.
Ink droplet spray regime for piezoelectric type printing head the most according to claim 2 adjusts system, it is characterised in that:
Described ccd video camera uses high-speed industrial ccd video camera, and minimum exposure time is at musec order or following；
The amplification of the front end object lens of described ccd video camera is more than 120 times.
Ink droplet spray regime for piezoelectric type printing head the most according to claim 3 adjusts system, it is characterised in that:
Described shower nozzle drives controller to include shell, is arranged over driver CAN communication groove and piezoelectric type at described shell
Printing head holding wire output groove；
At described shell built with driver control module, this driver control module includes that microcontroller circuit, CAN are logical
Letter circuit, driving signal generating circuit and power circuit；
Described microcontroller circuit includes STC12C5A single-chip microcomputer and peripheral circuit thereof, and it receives computer meter by CAN
The drive waveforms calculating platform transmission drives parameter and the voltage of piezoelectric type printing head and sequencing contro；
Described CAN telecommunication circuit includes TJA1050 and peripheral circuit thereof, it is achieved the serial of described STC12C5A single-chip microcomputer is led to
Letter interface and the physical transformation of CAN communication interface；
Being provided with CAN communication interface in described CAN telecommunication circuit, it is calculated with computer by described CAN
Platform is connected, and this CAN communication interface is positioned at shower nozzle and drives the driver CAN communication groove above controller housing
Place；
Described driving signal generating circuit includes bipolarity serial digital-analog conversion chip AD5752 and peripheral circuit thereof, produces and is suitable for
Voltage signal needed for piezoelectric type printing head；
Being provided with piezoelectric type printing head holding wire output interface on described driving signal generating circuit, it is printed by piezoelectric type
Spout signal line is connected with piezoelectric type printing head, and this piezoelectric type printing head holding wire output interface is positioned at shower nozzle and drives control
Piezoelectric type printing head holding wire output groove above device shell；
Described power circuit includes LM2940 and peripheral circuit thereof, and system+24V DC source is depressured to+5V, for microcontroller
Circuit, CAN telecommunication circuit, driving signal generating circuit and other+5V system power supply.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520972793 | 2015-12-01 | ||
| CN2015209727933 | 2015-12-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205871499U true CN205871499U (en) | 2017-01-11 |
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ID=57689663
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620508588.6U Expired - Fee Related CN205871499U (en) | 2015-12-01 | 2016-05-30 | A ink droplet spraying state adjustment system for piezoelectric type printing shower nozzle |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108528050A (en) * | 2018-04-14 | 2018-09-14 | 大丰鑫源达化工有限公司 | The system and method for fluency is printed using ink droplet observation instrument tested inks |
| CN116619907A (en) * | 2023-07-24 | 2023-08-22 | 季华实验室 | Method and device for optimizing nozzle driving waveform data, electronic equipment and storage medium |
-
2016
- 2016-05-30 CN CN201620508588.6U patent/CN205871499U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108528050A (en) * | 2018-04-14 | 2018-09-14 | 大丰鑫源达化工有限公司 | The system and method for fluency is printed using ink droplet observation instrument tested inks |
| CN116619907A (en) * | 2023-07-24 | 2023-08-22 | 季华实验室 | Method and device for optimizing nozzle driving waveform data, electronic equipment and storage medium |
| CN116619907B (en) * | 2023-07-24 | 2023-10-20 | 季华实验室 | Method and device for optimizing nozzle driving waveform data, electronic equipment and storage medium |
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