CN103358681A - Method used for supplying ink in anilox roller ink supply device having anilox roller and scraper type duct - Google Patents
Method used for supplying ink in anilox roller ink supply device having anilox roller and scraper type duct Download PDFInfo
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- CN103358681A CN103358681A CN2013101160516A CN201310116051A CN103358681A CN 103358681 A CN103358681 A CN 103358681A CN 2013101160516 A CN2013101160516 A CN 2013101160516A CN 201310116051 A CN201310116051 A CN 201310116051A CN 103358681 A CN103358681 A CN 103358681A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F31/00—Inking arrangements or devices
- B41F31/02—Ducts, containers, supply or metering devices
- B41F31/027—Ink rail devices for inking ink rollers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F31/00—Inking arrangements or devices
- B41F31/02—Ducts, containers, supply or metering devices
- B41F31/022—Ink level control devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
- B41P2233/00—Arrangements for the operation of printing presses
- B41P2233/30—Measuring or controlling the consumption of ink
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Abstract
The present invention relates to a method used for supplying ink in an anilox roller ink supply device (1) having an anilox roller (2) and a scraper type duct (3). In the method, constant amount of ink is refilled into the scraper type duct (3) after an interval, the interval is calculated automatically and is changed through an iteration method. According to a modified scheme, average time between prior refillings or average amount of machine revolution of the prior refillings is slidable. According to another modified scheme, the number of printing materials is raised or reduced with a predetermined value before the next refilling.
Description
Technical field
The present invention relates to a kind of for the method at the anilox inking unit supply printing ink with anilox roll and scraper type ink fountain.
Background technology
Background of the present invention is to need in practice manually printing-ink to be recharged in the scraper type ink fountain of anilox inking unit.At this, not with the liquid level in the bore hole monitoring scraper type ink fountain with approach sensor but by operating personnel.A problem is that the viscosity that the ratio of viscosities of the printing ink that need recharge has been in the printing ink in the scraper type ink fountain is large.Its reason is being temperature difference and is being on the other hand the thixotropy effect on the one hand.The printing ink that need recharge has room temperature and the printing ink that has been in the scraper type ink fountain has higher temperature, because described printing ink is by through the anilox roll of temperature adjustment and heating.The rotation of anilox roll causes that the printing ink that is in the scraper type ink fountain rolls, and also can reduce the viscosity of described printing ink thus.Be in that the constant of (in the printing width scope) is significant for high printing quality on time upper (in the print order scope) of viscosity of the printing ink in the scraper type ink fountain and the place.The fluctuation of inevitable viscosity in manual or situation that manual triggers printing ink recharges, this causes the ink density fluctuation do not expected at stock.
At DE10 2,007 010 528A1(corresponding to US7,607, a kind of anilox inking unit with anilox roll and scraper type ink fountain has been described in 390B2).One agitating element extend in the scraper type ink fountain, and the stirring by means of described agitating element is laid in highly to implement printing-ink on the whole width of scraper type ink fountain forms large air bubble in order to prevent in the printing-ink deposit.
This agitating element with side effect may cause that the printing ink that is fed in the scraper type ink fountain mixes with the good of printing ink in being in the scraper type ink fountain, but can not be reduced in enough degree viscosity fluctuation when recharging printing ink by means of agitating element in practice.
Except anilox inking unit, in offset press, also there is the blotter roller inking device, it is not to have anilox roll in order to measure, but has the metering device that is divided into the ink-covered area.In this blotter roller inking device, printing ink automatically can be recharged in the ink fountain.
The method that a kind of printing-ink for determining offset press consumes has been described in DE38 35 221 C2, in the method, in ink fountain, carry out the monitoring of quantity of ink, its mode is that the weight of printing ink of putting in the ink fountain is compared and output alarm signal in the situation with the danger of ink fountain dry running with the ink consumption value of trying to achieve.Trying to achieve by the monitoring of print product of ink density value carried out by means of the monitoring bar that is printed together.Consider temperature or the viscosity of correction factor, preferred printing-ink at this.The ink consumption that can also be gone out to estimate by printing surface percentage (forme has described printing surface percentage) rough calculation.This calculating can be used as interim ink consumption value the basis or as correction factor.The weight of printing ink of trying to achieve not only can be related to print product (the namely printed matter of each quantification) but also can be related to print order.
Described a kind of method for printing-ink being fed to the printing machine ink fountain at DE100 09 664 A1, in the method, in case the liquid level that is detected in ink-covered area or the ink-covered area group in the ink fountain is lower than, then ink tank is just measured the printing-ink of the amount of determining.In metering process, except the height of liquid level, also detect the position of ink tank and send this position to computer simultaneously.Try to achieve the quantity that is printed page and send this quantity to computer by counting device.In the residue metering process, may need to carry out the change of metering cycle.This means that the discrete magnitude that each metering process is input in ink-covered area or the ink-covered area group is lowered.Therefore, must improve the quantity of metering process in the unit interval to take into full account its consumption for the ink-covered area with high ink demand.
In DE195 12 727 A1, a kind of ink fountain has been described, in this ink fountain by means of sensor try to achieve the printing ink deposit in the regional virtual condition and printing ink very little the time to the refill device transmitted signal.Another sensor is tried to achieve by recharging the liquid level that reaches and can utilizing its signal to proofread and correct.Recharging at this of printing ink can be carried out with the interval.
In DE199 03 449 A1, described a kind of for the method at the ink fountain metering printing ink, in the method, by the Sensor monitoring liquid level.Predetermined minimum liquid level can be identified for triggering the again limit of metering.This limiting value can be selected like this, so that maximum and can not carry out the dry running of printing ink deposit in the ink fountain when print speed printing speed is maximum simultaneously by the metering device that recharges before again crossing metering region at the ink-covered area opening.
A kind of method of the state for controlling the ink fountain printing-ink has been described in DE199 06 078 B4, in the method, by means of control device by current actual liquid level, in the relevant range, calculate actual printing ink consumption in the unit interval by the actual condition value of formerly measuring and by current measurement and the time interval of formerly measuring.Regulated the amount that needs output in the ink-covered area by the actual printing ink consumption in the unit interval.
A kind of method of ink level of the ink fountain for controlling the sheet-fed offset printing machine has been described in DE199 28 200 A1, in the method, computer is measured the local ink demand relevant with the time by the ink demand of each ink-covered area, namely interior ink demand for relevant ink-covered area of unit interval.In order to meet demand ground printing ink is metered in the ink-covered area, regulates the amount that needs metering with measurement unit.At this, measurement unit remains unchanged in the print order scope, with the printing ink discrete magnitude of determining of definition.Computer can determine must apply how many measurement units now within each unit interval.
Occur owing to recharge the problem of the viscosity fluctuation that causes with much bigger degree in the blotter roller inking device that ratio is set forth below in the anilox inking unit of setting forth before.
Summary of the invention
Therefore task of the present invention is, provides a kind of for the method at anilox inking unit supply printing ink, has got rid of on the absolutely large degree in the method owing to recharge the infringement of the printing quality that printing ink causes.
The method of the feature of described task by having claim 1 and 6 solves.
The uniformity that these two methods of the present invention have is after an interval constant quantity of ink to be recharged in the scraper type ink fountain respectively.Be interpreted as at this for " constant ": quantity of ink is not changing between the interval or between recharging.
In addition, the uniformity that also has of these two methods of the present invention is that described interval is automatically calculated and changes by iterative method at this.Be interpreted as at this for " automatically ": in the machine mode, for example by computer-implemented calculating.
In two alternative solutions of these common principle structures, they are included in claim 1 and 6.
In addition, propose in the solution according to claim 1, the machine revolution par between the average time between the recharging formerly or the recharging formerly slides.Be interpreted as at this for " slip ": average time or par change.Be interpreted as for " average time ": consist of a mean value by the time that is between the recharging formerly." par of machine revolution " is corresponding to the par of the printed matter between the recharging formerly.
In the solution according to claim 6, propose, make printed matter quantity until next raise or reduce with the pre-value of determining with recharging.The quantity of printed matter for example can be the quantity of page, and described page is processed in corresponding two printing machines that comprising described anilox inking unit between recharging.First recharge and second recharge between the printing the first quantity printed matter and second recharge and the 3rd recharge between the printing the second quantity printed matter.With the pre-value of determining, for example raise with 25 printed matters after, the second quantity is Duoed 25 printed matters than the first quantity.In with the pre-value of determining, situation about for example reducing with 25 printed matters, the 3rd recharges after second recharges to recharge than second lack 25 printed matters after first recharges.That is to say that if second recharge with respect to the 3rd and recharge the pre-value of determining that descended, then with regard to the corresponding cycle, the 3rd recharges to recharge ahead of time than second and carry out.
Method of the present invention is particularly suitable at offset press, particularly implements at the offset press that is used for printed pages.
Description of drawings
By the favourable further scheme that draws the inventive method in following explanation to embodiment and the accompanying drawing.In the accompanying drawing:
Fig. 1 is the Local map of printing machine, the ink tank that it has anilox inking unit and is used for printing ink is recharged the scraper type ink fountain, described anilox inking unit has scraper type ink fountain and control device, and described control device has the liquid level sensor for the printing ink liquid level of monitoring scraper type ink fountain;
Fig. 2 is that wherein, slide the average time that recharges between the process formerly for the flow chart of implementing re-fill method;
Fig. 3 is the flow chart for the dry running of identification ink tank;
Fig. 4 a and 4b are for the flow chart of implementing re-fill method, and wherein, the quantity of printed matter raise with predetermined value before next recharges or reduces.
The specific embodiment
Fig. 1 illustrates the anilox inking unit 1 with anilox roll 2 and scraper type ink fountain 3.Scraper type ink fountain 3 comprises scraper 4 and rear wall 5, and described scraper abuts in printing operation on the anilox roll 2.Store printing ink deposit 6 in scraper type ink fountain 3, described printing ink deposit is by anilox roll 2, scraper 4 and rear wall 5 gauges.Described rear wall 5 is supported towards anilox roll 2 adjustable grounds around rotary gemel, in order to when regulating described printing ink deposit 6 is elevated on the level of the sword that is higher than scraper 4 by extruding.Liquid level sensor 7 is set above printing ink deposit 6, and described liquid level sensor points to towards printing ink deposit 6, in order to measure the liquid level that causes by printing ink deposit 6 in the scraper type ink fountain 3.Liquid level sensor 7 is the sensors of contactlessly working and for example can is ultrasonic wave-approach sensor.Ink tank 8 is set above scraper type ink fountain 3, and this ink tank is configured for printing ink is recharged refill device in the scraper type ink fountain 3.Therefore, ink tank 8 also can be called as refill device.Liquid level sensor 7 and ink tank 8 are connected on the electronic-controlled installation 9.The signal of these control device 9 receiving liquid level sensors 7 and control ink tank 8, for example, its mode is that control device 9 makes the dump valve of ink tank 8 open or activate the delivery pump of ink tank 8.Control device 9 comprises computer or microprocessor, and program is moved in described computer or microprocessor, and described operation is respectively corresponding to the operation among Fig. 2 and/or Fig. 3 and/or Fig. 4 b.
Printing ink deposit 6 carries out the parallel rotation of axle by its contact with the anilox roll 2 of rotation and correspondingly rolls fast.This rolling causes mobile and air is incorporated in the printing ink, is formed on thus the bubble that has corresponding tomography on the ink pellet surface and the contraction flow region with corresponding subsidence part.Also exist other, may make the incredible cause of failures of measurement result.One extend in the printing ink deposit 6 for the ink agitator that does not more illustrate for simplicity and in this printing ink deposit internal vertical in the drawing planar reciprocating of Fig. 1, this ink agitator can detect and pull the printing ink that flows out from ink tank 8.So towed printing ink can be put in the surveyed area of liquid level sensor 7 by accidental by ink agitator, thus so that this liquid level sensor is interpreted as the liquid level that great-jump-forward rises with it.Because this explanation of error, control device 9 makes and recharges interruption, thus will be so that the liquid level reduction in the scraper type ink fountain 3.That is to say do not having in the situation of measure of the present invention, the measurement result of liquid level sensor 7 self can not be convincing and enough effectively control cause enough constant the recharging of liquid level in the scraper type ink fountain.
For liquid level to be detected five threshold values are set, described threshold value is shown in Figure 1.There is a maximum level height.Be higher than the danger that this boundary then faces the printing ink overflow.When surpassing this boundary, automatically send an alarm and regulate described recharging by control device 9.Except the boundary of the described liquid level that goes up most, also there are the level limits under, namely a minimum level.Be lower than this boundary and no longer can continue reliably printing.When being lower than this minimum level, automatically send an alarm to the printing worker by control device 9.Between these two boundaries, namely between minimum level and maximum level, have a working region with minimum work liquid level and maximum functional liquid level.Specified liquid level is present in (namely between minimum work liquid level and maximum functional liquid level) between work liquid level and the lower work liquid level.
In order to realize high-quality print result, should as far as possible accurately keep definite specified liquid level.In order to satisfy this requirement, implement to recharge with short time interval and with the limited amount of recharging.Be lower than specified liquid level if actual liquid level drops to, then recharge.The valve of one regulating element, for example ink tank 8 or pump are connected one definite period by signal, thereby so that printing ink since described signal from ink tank 8, flow out.On-time for example can and be determined like this for 1 second so that under normal condition (for example room temperature and ink temperature can belong to normal condition) printing ink of the amount of determining is flowed out from ink tank 8.In the situation that externally condition changes, the on-time can correspondingly change.In short interval, also has its conclusive advantage with recharging of carrying out on a small quantity, that is, have viscosity higher and than be in the cold fresh printing ink of printing ink (printing ink deposit 6) in the scraper type ink fountain 3 more quickly be in scraper type ink fountain 3 in printing ink mix.The uniformity of printing ink is the important prerequisite condition of carrying out even inking at whole page face.Thus advantageously, the amount of recharging is limited in for each recharges on definite amount.For example the amount of recharging can be limited in scraper type ink fountain 3 the maximum storage volume the highest 5% on.If for example the maximum storage volume of scraper type ink fountain 3 is 1000 cubic centimetres, then each recharge the amount of recharging of process input should be above 50 cubic centimetres.
Fig. 2 illustrates the constant maintenance of liquid level that realizes by means of liquid level sensor 7 and the Credence test that undertaken by control device 9 when disturbing.Because therefore that had set forth the front because the measured value of liquid level sensor 7 fluctuation and recharge the interference that may occur of adjusting device needs additional standard to avoid the not enough and excessively control of control.
The below elaborates the method shown in Fig. 2-and program circuit.
Scraper type ink fountain 3 is controlled plant in the meaning of regulation technology, and it has good steering characteristic and also can get rid of well interference.At this, interference and leading parameter change to be processed apart from each other according to the pre-control principle.The following describes in controlled plant (ink cavity), identifying disturb after leading parameter (liquid level) be how no longer relatively keep constant by rated value-actual value but by before the temporary transient pre-control of value (equispaced or average time) of " study ".Because controlled plant dynamically, namely the continuity of ink consumption is known, therefore can carry out pre-control.The Credence test of the liquid level that measures carries out by means of following viewpoint: in continuing printing, ink consumption is constant, namely continuous.Because the ink consumption of each printed pages is always identical, therefore must carry out be used to keeping recharging of preselected liquid level with regular interval.When dropping to specified liquid level, actual liquid level recharges when following respectively.Interval between recharging (the machine number of turns between recharging or the time that consumes between recharging) is detected and calculate continuously the moving average interval, and the latter also can be called as the moving average time.Can calculate by means of described equispaced: must carry out next when and recharge.Ink level descends continuously by ink consumption, that is to say, the unexpected transition (noncontinuity) of liquid level can only be by disturbing or explanation of error by liquid level sensor 7 causes.This explanation of error can be by the printing ink gathering section on the accidental wall that is attached to scraper type ink fountain 3 or the printing ink deposit 6 by liquid level sensor 7 fronts since the surface settlement that flow technique causes cause.If liquid level sensor 7 is ultrasonic sensors, then it in fact can be with the precision measure interval of about 0.1mm.But, in the situation of scraper type ink fountain 3, because the surface of printing ink deposit 6 is unstable, can only measure liquid level with the rough grade of for example about 3mm by liquid level sensor 7.Liquid level descends continuously from specified liquid level in printing work carries out, for example the about 0.1mm of per second decline.If per second is measured a liquid level, then corresponding measurement result and measurement result maximum formerly can only depart from about 3mm.If record now one to depart from the liquid level of formerly measuring greater than 3mm, then there is one owing to disturb the discontinuity that causes.Carry out in this case Credence test.Consider that at this described deviation exists with obvious higher liquid level or exists with obvious lower liquid level.
In situation about mentioning for the first time, that is, if there is obviously higher liquid level, then ignore measured value.Described obviously higher liquid level is tried to achieve by means of following standard: actual liquid level whether be higher than by specified liquid level add that the deviation (being in this example 3mm) of maximum possible consists of and.Next filling is carried out with the interval that provides in advance by current equispaced.Otherwise will stop to fill and thus decline of liquid level with allowing.If in the continuous measurement of quantification, also record the value that increases, then send an alarm.If measured value again corresponding to specified liquid level, is then measured by liquid level again and is adjusted by means of recharging that ink tank 8 is carried out.Then end the interim filling carried out according to the equispaced.
In situation about mentioning for the second time, there is the liquid level that obviously reduces.It is tried to achieve according to following standard: whether actual value is lower than poor that measured deviation by rated value and maximum possible consists of.As setting forth, the measured deviation of maximum possible is 3mm in this example.Also ignore corresponding measured value even there is obvious lower liquid level.Next filling is carried out with the interval that provides in advance by current mean value.Otherwise will fill immediately and rising of liquid level with allowing.If in the continuous measurement of quantification, also record the value that reduces, then send an alarm.If measured value is then adjusted described recharging by the liquid level measurement again again corresponding to specified liquid level.Then end the interim filling carried out according to the equispaced.
How Fig. 3 illustrates by means of liquid level sensor 7 and keeps consistently the liquid level of printing ink deposit 6 and when lacking output how to carry out alarm when printing ink by means of ink tank 8 recharges.Printing ink for example recharges and can stop owing to ink tank is emptying.Liquid level sensor 7 measures an actual liquid level that is lower than specified liquid level.Then by liquid level sensor 7 signal is sent to control device 9 to recharge, described control device is correspondingly controlled ink tank 8.In next was measured, described liquid level sensor 7 measured again an actual liquid level that is lower than specified liquid level.After the measurement of quantification (described measurement has the actual liquid level that is lower than specified liquid level), measurement result is evaluated as by control device 9 and lacks China ink.Then send the alarm that the printing ink supply has been interrupted to operating personnel.
System shown in Fig. 1 can use with an operational mode, and described operational mode can be used the quantity of ink that must dispose when cleaning to reduce before printing machine cleans or shuts down or before printing ink is changed.In this operational mode, because low liquid level, thereby large level fluctuation can cause the temporary transient printing ink of anilox roll 2 under-supply and reduce slightly printing quality, but this remains endurable.In this operational mode, printing ink deposit 6 drops to minimum level.In order to keep consistently this minimum level, to recharge equispaced or the average time of trying to achieve before in described continuation printing.The predetermined minimum level of monitoring is not lower than in this operational mode.If measure this minimum level, then for the sake of security by recharging the level that improves printing ink deposit 6.
Illustrate the printing ink supply of carrying out in continuing printing in Fig. 4 a and 4b, it has the pre-control that calculates, and wherein, Fig. 4 b is included in the continuation of the program circuit shown in Fig. 4 a.
Program at control device 9(referring to Fig. 1) in the operation and this control device according to described programme-control ink tank 8.Also can replace ink tank 8 as refill device with the refill device that has towards the pipeline of the printing ink tank of machine exterior, wherein, printing ink from this printing ink tank by described pipeline pump to refill device.
As setting forth with reference to other embodiment, regulating element, for example valve or the pump of the signal activation ink tank 8 by control device 9 and ink tank 8 connected one period definite time interval.On-time for example can and be determined like this for 1 second, so that the room temperature of under normal condition, for example determining and definite printing-ink temperature make the printing-ink of the amount of determining flow out from ink tank 8 within the good time interval.If boundary condition changes, then the on-time can correspondingly change.Each recharges from ink tank 8 quantity of ink that flows out for example is the group of one 50 gram or has 50 cubic centimetres volume.Therefore, each connection signal causes to have recharging of about 50 gram printing ink.This amount of recharging bottom should be called as " NF ".This reliably the amount of recharging can try to achieve by test, be recharged in its situation that can have no adverse effect in the rheological behavior for the printing ink deposit 6 in the scraper type ink fountain 7.This reliably the amount of recharging should not surpass scraper type ink fountain 7 maximum fill volume 5%.
Try to achieve general ink consumption as the standard that need to recharge when and with which kind of interval.Ink consumption depends on face covering, stock specification or stock area and required being used for specified ink density so that the quantity of ink of definite square measure inking.It is a percent value that face covers, and it provides with " FD[%] " below and tries to achieve or predetermined for each forme in the prime.The stock area is used below " A " to represent and is known.The quantity of ink of per unit area represents with " FM " and is the distinctive characteristic parameter of printing-ink.The distinctive characteristic parameter of this printing-ink can be provided by the printing-ink supplier according to coverage curve and the saturation curves set up.
How many printings must try to achieve one recharges for and is enough or utilizes one to recharge to print how many printed sheets.For this reason, calculate the ink demand (" FB ") of each printed matter or each printed sheet, wherein, this ink demand is that face covers the product multiply by the stock area and to multiply by quantity of ink (FB=FD * A * FM).If the predetermined amount of recharging NF divided by the ink demand FB that calculates, is then obtained the printed matter of the available amount of recharging NF printing or the quantity of printed sheet.This quantity of printed matter or printed sheet can be said to consist of the interval between recharging and be called as below and recharge interval (" NI ").Calculate in the following manner in the described interval that recharges: NI=NF/FB.
If supposition face is covered as 50%, the size that is printed area (stock area) of each page is the quantity of ink that 0.4 square metre and every square metre of every square measure have 1 gram, then for example recharging interval NI is 250 pages.This recharges interval only approximate ink consumption corresponding to reality roughly, because not yet consider the impact that causes by stock, wetted media, machine speed etc. at this.In improved embodiment, also can additionally consider described parameter.
Five threshold values that are used for liquid level having set forth in conjunction with Fig. 1 in this embodiment also are suitable for.
Printing ink should be laid in 6 ink level by the printing ink shown in Fig. 4 a and 4b supply algorithm remains between minimum work liquid level and the maximum functional liquid level (referring to Fig. 1) and is adjusted on the specified liquid level.A vital task of this printing ink supply algorithm is, shortens or increase the described interval NI that recharges according to the signal of liquid level sensor 7.This for example can followingly carry out: liquid level sensor 7 notice control device 9 have reached the maximum functional liquid level, derive thus printing ink specific consumption many of ink tank 8 outputs.Accordingly, the interval between described the recharging of increase, namely increase recharge interval NI to the printing ink adjustment algorithm automatically.Another example: liquid level sensor 7 notice control device 9 have reached minimum work liquid level.That is to say that the printing-ink of consumption is than flow into many scraper type ink fountain 3 from ink tank 8.Described printing ink adjustment algorithm or the control device 9 that comprises described printing ink adjustment algorithm shorten the intervals between described the recharging automatically.Recharging interval NI diminishes.
Following the carrying out of printing ink supply according to the program circuit among Fig. 4 a and the 4b: try to achieve ink consumption or first and recharge the size of interval NI1 as initial value.Substantially fill by the instruction that enters for printing ink, described basic filling is corresponding to the centre between minimum work liquid level and the maximum functional liquid level.Carrying out first after beginning to print recharges interval experience and has experienced described first and recharge and carry out first after interval and recharge.Described program is tried to achieve the quantity that is printed page and is recharged and cause other recharging after interval again experiencing first.This process continues, until liquid level sensor 7 notices have reached maximum functional liquid level or minimum work liquid level.In these two threshold values which reaches first will depend on ink consumption and from the ratio between the ink tank 8 actual printing ink that flow into.If at first reached now the maximum functional liquid level, the printing ink that then flows into from ink tank is more than ink consumption.Present described adjustment algorithm causes with larger interval and recharges.Be that first of 250 printed sheets recharge interval NI1 and increase 10% and increase to thus second and recharge interval NI2 in the example that provides, its value is 275 printed sheets.After first proofreaies and correct, to recharge for interval a termination, thus can be so that the ink level that begins to raise descends and if to be no more than the maximum functional liquid level always also too many from the printing ink that ink tank 8 flow into the scraper type ink fountain 3, then behind the printed sheet of respective numbers or printed matter, reach the maximum functional liquid level for the second time.Therefore recharge interval NI2 by control device 9 or the program moved with second in control device and again increase 10% and increase to thus the 3rd and recharge interval NI3, its value is 300 printed sheets.
After each the correction, will recharge for interval a termination.If the printing ink of input is roughly corresponding to ink consumption now, then after recharging interval NI3, experience the 3rd carries out all other recharging.If the correction of the printing ink of input by described interval be less than ink consumption, ink level experience working region then is until liquid level sensor 7 notices have reached the minimum liquid level of working.
If reached minimum work liquid level by liquid level sensor 7 notice control device 9, then control device 9 causes that immediately one recharges, even the current interval that recharges is not also experienced fully.Ink level should be remained on more than the minimum work liquid level by this printing ink input immediately, thereby so that described adjustment algorithm needn't one after the other be implemented a plurality of corrections based on the sensor notice of following each other.The current interval (be in this example the 3rd recharge interval NI3) that recharges must be shortened again to increase the printing ink input now.At this, what meet now the purpose requirement is that percentage shortens less than percentage increase formerly.For example, the percentage shortening is half that percentage formerly increases.If percentage in the example that provides formerly is increased to 10%, then the percentage shortening just is 5%.Thus, recharging interval NI4 for the 4th just obtains: NI4=(NI1+10%+10-5%)=and (250 pages+25 pages+23 pages-12.5 page)=287.5 pages.
Realize step by step the ink level of balance by this way, the latter moves between minimum work liquid level and maximum functional liquid level lentamente.
The flow process of front is take following situation as starting point, that is, and and by at first having reached the maximum functional liquid level between the first promoter region.If there is other situations, that is to say if by at first having reached minimum work liquid level between the first promoter region, then must shorten first and recharge interval NI1, thereby improve the printing ink cycle.Recharge at first immediately, ink level can be remained on thus more than the minimum work liquid level.This means: NI2=(NI1-10%)=(250 pages-25 page)=225 pages.After this is proofreaied and correct, utilize the interval continuation that recharges of 225 pages of trying to achieve to print, until reach maximum functional liquid level or minimum work liquid level and again correction.
Can consider various improvement projects.Recharge the adaptive of interval because minimum the reaching of liquid level or maximum functional liquid level of working causes, therefore can save the calculating between the first promoter region.The substitute is, can utilize average interval value, for example 100 pages start.
In another improvement project of described adjustment algorithm, can consider following parameter by corresponding indicatrix: stock, print speed printing speed, temperature etc.
In an again improvement scheme of described adjustment algorithm, utilize sensor repeatedly to measure the liquid level of the printing ink deposit in the scraper type ink fountain and by filtering function a plurality of deviations are got rid of from a series of measurements.Carry out Credence test by filtration, by Credence test corresponding maximum is got rid of from a series of measurements of following each other, thereby so that the interference that detects can not distorted the value of actual liquid level.For example can use median-filter for filtering function, wherein, for example in five measured values of sorting out according to size of following each other, the 3rd value (median) is used for analyzing and processing.Above and other the following values of median are not used to further analyzing and processing and the substitute is as disturbing evaluation and ignoring.
In the other method step, the median of trying to achieve continued to be calculated as Sliding Mean Number and can form thus mean value and filter.The mean value of trying to achieve thus can be used as the current actual value of liquid level and processes, and wherein, carries out one when this actual value during less than rated value and recharges.If this actual value is surpassed with the tolerance (with respect to the upper liquid level limit of rated value) of determining, then end to recharge, until reach again rated value.
The reference number table
1 anilox inking unit
2 anilox roll
3 scraper type ink fountains
4 scrapers
5 rear walls
6 printing ink deposits
7 liquid level sensors
8 ink tank
9 control device
Claims (10)
1. a method that is used at anilox inking unit (1) the supply printing ink with anilox roll (2) and scraper type ink fountain (3) is characterized in that,
After an interval, constant quantity of ink is recharged in the described scraper type ink fountain (3) respectively;
Described interval is automatically calculated and is changed by iterative method at this; And
Machine revolution par between average time between the recharging formerly or the recharging formerly slides.
2. by method claimed in claim 1, it is characterized in that, measure the liquid level of the printing ink deposit (6) in the described scraper type ink fountain (3) and in the discontinuous situation of measured value, automatically implement Credence test with approach sensor.
3. by method claimed in claim 2, it is characterized in that, consider when Credence test: described discontinuity is to exist with the liquid level form of obvious rising or with the liquid level form of obvious decline.
4. by method claimed in claim 3, it is characterized in that the liquid level that obviously raises identify according to following standard: actual liquid level whether be higher than that measured deviation by specified liquid level and maximum possible consists of with; And the liquid level that obviously descends is identified according to following standard: whether actual liquid level is lower than poor that measured deviation by specified liquid level and maximum possible consists of.
5. by one of claim 1 to 4 described method, it is characterized in that, adjusting printing ink for the seasonable pre-control principle of using.
6. a method that is used at anilox inking unit (1) the supply printing ink with anilox roll (2) and scraper type ink fountain (3) is characterized in that,
After an interval, constant quantity of ink is recharged in the described scraper type ink fountain (3) respectively;
Described interval is automatically calculated and is changed by iterative method at this; And
The quantity of printed matter before recharging, next is raise or reduction with the pre-value of determining.
7. by method claimed in claim 6, it is characterized in that, measure the liquid level of the printing ink deposit (6) in the described scraper type ink fountain (3) by liquid level sensor (7); Signal according to described liquid level sensor (7) recharges the interval by control device by programming (9) prolongation or shortening; And by the corresponding control of described control device (9) printing ink that feeds is recharged refill device (8) in the described scraper type ink fountain (3).
8. by method claimed in claim 7, it is characterized in that, when described liquid level sensor (7) is notified described control device (9) to reach minimum work liquid level and should minimum working solution plane be faced be lower than dangerous, shorten the described interval that recharges by described control device (9).
9. by method claimed in claim 7, it is characterized in that, when described liquid level sensor (7) is notified described control device (9) to reach maximum functional liquid level and this maximum functional liquid level to face be exceeded dangerous, prolong the described interval that recharges by described control device (9).
10. by one of claim 6 to 9 described method, it is characterized in that, adjusting printing ink for the seasonable pre-control principle of using.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102012007038 | 2012-04-05 | ||
| DE102012007038.1 | 2012-04-05 |
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| Publication Number | Publication Date |
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| CN103358681A true CN103358681A (en) | 2013-10-23 |
| CN103358681B CN103358681B (en) | 2016-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310116051.6A Active CN103358681B (en) | 2012-04-05 | 2013-04-03 | For the method supplying ink in the anilox inking unit with anilox roll and scraper type ink fountain |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103358681B (en) |
| DE (1) | DE102013003923A1 (en) |
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| CN103587236A (en) * | 2013-11-13 | 2014-02-19 | 江苏科思机电工程有限公司 | Ink height detecting method and automatic ink adding device |
| CN106183402A (en) * | 2014-09-05 | 2016-12-07 | 海德堡印刷机械股份公司 | The method supplying ink in printer |
| CN109760406A (en) * | 2019-03-09 | 2019-05-17 | 深圳市正鑫源实业有限公司 | The control method and its letterpress system of ink amount are put in intelligent letterpress |
| CN114025965A (en) * | 2018-12-20 | 2022-02-08 | 博斯特佛罗伦萨有限公司 | Ink dispensing system using pressure |
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| US10723120B2 (en) | 2016-07-27 | 2020-07-28 | Goss International Americas, Inc. | Ink delivery system and method |
| DE102018004024A1 (en) | 2018-05-16 | 2019-11-21 | Giesecke+Devrient Currency Technology Gmbh | Screen printing machine and screen printing process with a round screen |
| CN116368011B (en) | 2021-02-18 | 2024-02-06 | 柯尼格及包尔公开股份有限公司 | Ink supply system, method for operating an ink supply system, gravure printing device and method for supplying gravure printing ink to a gravure printing device |
| DE102021103847A1 (en) | 2021-02-18 | 2022-08-18 | Koenig & Bauer Ag | Process for operating an ink supply system for supplying printing ink to an inking unit and ink supply system |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN103358681B (en) | 2016-08-17 |
| DE102013003923A1 (en) | 2013-10-10 |
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Effective date of registration: 20210707 Address after: Weisloch, Germany Patentee after: Heidelberg printing machinery Intellectual Property Co.,Ltd. Address before: Heidelberg, Germany Patentee before: Heidelberger Druckmaschinen AG |