EP1981791A1 - Vorrichtung und verfahren zum messen und einstellen der bahnspannung zwischen farbwerken einer mehrfarbenmaschine - Google Patents
Vorrichtung und verfahren zum messen und einstellen der bahnspannung zwischen farbwerken einer mehrfarbenmaschineInfo
- Publication number
- EP1981791A1 EP1981791A1 EP07801404A EP07801404A EP1981791A1 EP 1981791 A1 EP1981791 A1 EP 1981791A1 EP 07801404 A EP07801404 A EP 07801404A EP 07801404 A EP07801404 A EP 07801404A EP 1981791 A1 EP1981791 A1 EP 1981791A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- web tension
- web
- adjustment
- sign
- printing
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 68
- 238000007639 printing Methods 0.000 claims abstract description 68
- 239000000463 material Substances 0.000 claims description 15
- 238000005259 measurement Methods 0.000 claims description 9
- 239000000758 substrate Substances 0.000 claims description 7
- 230000001052 transient effect Effects 0.000 claims description 7
- 239000003550 marker Substances 0.000 claims description 2
- 230000006870 function Effects 0.000 description 5
- 239000002699 waste material Substances 0.000 description 3
- 230000005483 Hooke's law Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000007646 gravure printing Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000010893 paper waste Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000007645 offset printing Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
- B65H23/044—Sensing web tension
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F13/00—Common details of rotary presses or machines
- B41F13/02—Conveying or guiding webs through presses or machines
Definitions
- the invention relates to a device and a method for measuring and adjusting the web tension between inking units of a multicolor rotary printing machine, as outlined in claims 1 and 2.
- Multi-color rotary presses often change settings. After making such changes, the printing press often prints waste or at least printed images of limited quality.
- the object of the present invention is to propose an apparatus and a method in which less waste or printed images of limited quality are printed. It has been found that those changes which have an influence on the web tension between inking units of the multicolor machine have an especially long influence on the print quality.
- settings is understood to mean printing parameters which have an influence on the web tension between inking units of the multicolour machine.
- Such settings can be changed during a running print job.
- Such adjustments made during the printing process include the setting of the printing rollers or the change of the printing speed.
- Under attitudes in the sense mentioned above however also the possibly predominantly mechanical measures with the Understood printing.
- the hiring, the start of printing and the pre-registration play a particularly important role again.
- measuring machines are known on printing presses as devices for measuring the web tension, in which the force exerted by the web tension on the axis of the roller can be measured.
- Possibilities to measure web tension are also measured by measuring the torque of rolls transporting the web.
- it is known to influence the web tension which prevails in a printing machine, when pressed by a control of the arrival and processing or the insertion and withdrawal.
- the present invention is based on the recognition that a special web tension is expressed between two inking units as soon as the cylinders carrying the print image are set against the impression cylinders.
- the cylinders carrying the printed image are in this case those cylinders which transmit the printed image to the same by rolling on the printing material web. This is usually the printing plate cylinder, in some forms of offset printing but also the blanket cylinder.
- At least one adjusting means sets the web tension between the printing areas of these two inking units on the basis of the measured values
- a control device is used which, on the basis of the measured values of the at least one measuring means, drives the at least one adjusting means.
- web guiding elements which determine the course of the printing material web-such as guide rolls-can advantageously be used to set the web tension.
- these change their relative position to the printing zones of their neighboring (employed) inking units the length of the transport path between the inking units and thus the web tension changes.
- Another way to influence the web tension between two inking units is to move the print image bearing rollers of the adjacent printing units so that their angular position changes relative to each other. It is advantageous, but not essential, to pre-position these pressure rollers when they are lifted off the printing material web. This is particularly advantageous when pre-registering. If this preposition corresponds in magnitude to the subsequent adjustment movement and is opposite in terms of the sign of the adjustment movement (other direction of rotation), then the previously set longitudinal register can be retained.
- the method according to the invention is particularly advantageous for use in pre-registering.
- the Pre-register method according to the document WO 2004/048093 A2.
- a method is presented which is particularly suitable for pre-registering.
- the substrate web is provided with a label that is transported on the substrate web through the various inking units of the machine.
- the individual inking units are assigned sensors of any kind that record the passage of the marker. From the evaluation of the measured values (in particular, when does the marking happen which inking unit) can the machine control derive information that is suitable for registering, preferably pre-registering.
- the teaching of the aforementioned document with respect to all components of the outlined register method - process sequence, types of marking, sensors or measuring methods, etc. - are considered part of this application. A recourse to these objects to supplement the present invention is reserved.
- a control device in the sense of the present document may consist of any combination of software and / or hardware features that can generate said control commands.
- the control module can also be guideline values known to take the web tension in the steady state. Against the background of these guideline values and current measured values recorded in the transient state, the machine controller, ie the control device, can determine which setting amounts it influences the web tension with the aid of the setting means. In this case, the control device can be based on the specification of the currently pending print job. These include material, material thickness, temperature of the material, modulus of elasticity of the material, etc.
- the control device can determine the setting amounts with the aid of a calculation module-which likewise can be in the form of any software or hardware-for example, based on physical relationships-such as Hooke's law.
- a calculation module which likewise can be in the form of any software or hardware-for example, based on physical relationships-such as Hooke's law.
- the data in question may take the form of a calibration table and could also be in a memory module in direct access of the control device or at least accessed by a machine operator using the control device.
- a further possibility to carry out the method according to the invention and in this way to obtain empirical values in the first place is that the at least one measuring device, before the first control process, notifies the control device which sign has the self-adjusting web tension change. Thereafter, the control device controls the at least one adjusting means so that there is a further controlled change in the web tension of this sign by a predetermined amount. This procedure is repeated until the sign of the self-adjusting web tension change changes, ie the value of the web tension prevailing in the stationary web tension state has passed. After this is done, either no further controlled web tension controls are made, or the sign of the controlled web tension change is changed.
- Web tension state prevailing web tension) to be changed web tension amount is still large. At low speed this amount is low. If the amount of the controlled web tension change is regulated in this way, then this amount should also be successively smaller, so that the amount by which the stationary web tension is crossed (overshoot amount) remains low. Without Such a regulation of the amount of the respectively made between the measurements controlled change of the web tension amount, a successive reduction of the amount of the controlled web tension change can also be automatically provided.
- the implementation of the control device with control programs that is capable of performing the mentioned advantageous adjustment methods is advantageous.
- the web tension between two directly adjacent printing units will be set.
- the printing web areas located between two adjacent printing units - also called web guide sections - are successively subjected to the method according to the invention.
- the preferred order corresponds to the transport path of the printing material web.
- FIG. 1 side view of a printing machine
- Fig. 2 The normal course of the web tension as a function of time Fig. 2a The AnstellSullivan two adjacent inking units to a first
- Time Fig. 3 The course of the web tension as a function of time at a
- Tastfahrt Fig. 3a The AnstellSullivan two adjacent inking units to a first
- FIG. 3 b The setting state of two adjacent inking units at a second time point
- FIG. 4 The course of the web tension as a function of time in a fast setting process
- FIG. 4 a The setting state of two adjacent inking units to form a first
- Fig. 1 shows a constructed in a row construction gravure printing machine in the side view.
- the methods of the invention are particularly well suited for use in built in row construction machines, which are often referred to as a stand-up machines.
- the printing substrate 3 is fed from the settlement 1 in the direction of arrow z of the printing press. First, it passes through the area of the pendulum roller system 2 and then runs to the feeder 4. It is particularly noteworthy in this context that the web tension can be set long-term between the feeder 4 and the drawer 5. However, this setting is not a setting in the sense of the invention, since it is not the setting that takes place on account of measurements and settings between the individual inking units D 1 to D 4 .
- the printing substrate web reaches the area of the second web guide section A 2 , 3 , which is terminated by the third printing zone, which is assigned to the third inking unit D 3 .
- the form cylinder F 3 and F 4 of the inking units D 3 and D 4 in the present illustration in Fig. 1 in the off state are shown.
- the pendulum roller system 2 following the unwinding 1 and the pendulum roller system 7 connected upstream of the reel 6 have the function of web stores to allow the web tension and pull-out web tension control operations already mentioned above to be applied to the unwinding or unwinding.
- the web tension curve f is plotted against the time t. Shown is the web tension profile, as it sets, when a normal Andruckvorgang is performed on a stand machine, and the web tension independently, that approximates the stationary web tension S without additional control operations.
- Fig. 3 shows the course of the web tension against time, this time, after the adjustment of the pressure rollers, the web tension is adjusted in a controlled manner to the stationary web tension.
- a time span T 1 with a web tension A is initially recorded. Again, in this period T 1, the web tension is determined only by insertion and removal.
- the hiring of the two pressure rollers F 1 and F 2 to their respective impression rollers P 1 and P 2 again leads to a sudden increase in the web tension.
- the transient phase T 2 begins, first with a self-adjusting compensation process, as far as the web tension is concerned.
- the web tension drops by an amount Mi, which is recorded by the web tension measuring roll Mi , 2 .
- the recorded measured values are fed to the control device, which can then determine the sign of the self-adjusting change.
- the control device can also measure the voltage changes between two measuring points MP A and MPB and determine the speed of the web tension change via the change in voltage per unit of time. Based on the knowledge of the speed of the web tension change between the measuring points MPA and MP 5 , the control device determines the stroke or the amount of the controlled web tension change Hi, whose sign has already been determined. After the controlled change in web tension by the amount H 1 , the measuring device M 1 ⁇ 2 repeats the measurement between the measuring points MPc and MP 0 and in this case measures the self-adjusting web tension change M 2 .
- the control device from the measuring points MPc and MP 0 determine the sign and the amount of self-adjusting web tension change M 2 . From these data, the speed of the web tension change between the two aforementioned measuring points can be determined again. Again, by controlling the adjusters, the controller advances a controlled web tension change by the amount H 2 , determining the sign and amount of web tension change based on the measurements. Again, the control device with the aid of the measuring device Mi, 2 measures the change in the web tension between the measuring points MP ⁇ and MPF and notes in this case that the sign of the self-adjusting web tension change M 3 has changed and that the speed of the web tension change is very low , So there is no need for any further controlled web tension changes.
- FIGS 3a and 3b illustrate once again the Anstell- and compensation behavior of the printing units during the adjustment operations.
- the adjustment operations by means of movements of the printing cylinder, in this case F 2 , made.
- These adjustment processes are symbolized by the arrows pf. They lead to a change in the relative angular position of the two pressure cylinders F 1 and F 2 .
- Fig. 4 shows again another controlled compensation process, which is carried out with the hub H 3 .
- the speed of the transient compensation process is increased once more here.
- the stroke H 3 compensates almost the entire web tension difference between the measuring point M PH and the stationary web tension S.
- Such compensation processes can occur, in particular, when the control device knows the stationary web tension S from the beginning. This may be the case when the control device is self-learning, that is to say that the control device is known in the form of a calibration table, the stationary web tension prevailing on a printing unit at a printing unit application, since such a web tension is already present during the processing of an old web Order.
- the control device can be known by estimating or by empirical values (measured values with old possibly similar print jobs, the web tension after setting can always be similar) such a web tension stroke or the automatically adjusting web tension.
- the method according to the invention thus also includes measuring operations, even if these have taken place in the case of already completed printing processes.
- a printing machine suitable for carrying out these methods therefore also includes such measuring devices.
- the angle ⁇ corresponding to the stroke H3 is either likewise known to the printing press or it is determined by known physical relationships such as Hooke's law.
- material parameters such as the modulus of elasticity
- the setting of the web tension is carried out after the execution of a pre-register method in which a register target position RF is detected, but not necessarily adjusted,
- the cylinders bearing the print image (F n ) are pre-positioned before adjustment (by the angle ⁇ relative to the register target position), this pre-positioning preferably taking place while the relevant cylinder bearing the print image is lifted off the web (3),
- adjustment or “adjustment” is used primarily for the adjustment of the web tension.
- control device a control device in the form of an industrial computer is combined as a central unit, which unites a large part of the intelligence necessary for the operation of the printing machine
- control units are also encompassed by this term.
- a control unit may be provided with control means for automatically executing certain procedures.
- control means may be program instructions - that is, software in particular.
- control means may also include hardware components such as electronic devices such as AND or NAND devices.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Inking, Control Or Cleaning Of Printing Machines (AREA)
- Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006004307A DE102006004307B4 (de) | 2006-01-31 | 2006-01-31 | Verfahren zum Messen und Einstellen der Bahnspannung zwischen Farbwerken einer Mehrfarbenmaschine |
PCT/EP2007/000845 WO2007144031A1 (de) | 2006-01-31 | 2007-01-25 | Vorrichtung und verfahren zum messen und einstellen der bahnspannung zwischen farbwerken einer mehrfarbenmaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1981791A1 true EP1981791A1 (de) | 2008-10-22 |
EP1981791B1 EP1981791B1 (de) | 2011-01-05 |
Family
ID=37909677
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07801404A Active EP1981791B1 (de) | 2006-01-31 | 2007-01-25 | Vorrichtung und verfahren zum messen und einstellen der bahnspannung zwischen farbwerken einer mehrfarbenmaschine |
Country Status (6)
Country | Link |
---|---|
US (1) | US8485095B2 (de) |
EP (1) | EP1981791B1 (de) |
AT (1) | ATE494249T1 (de) |
DE (2) | DE102006004307B4 (de) |
ES (1) | ES2357657T3 (de) |
WO (1) | WO2007144031A1 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007053527A1 (de) | 2007-11-09 | 2009-05-14 | Robert Bosch Gmbh | Verfahren zur Bahnspannungseinstellung bei einer Bearbeitungsmaschine |
DE102008053406A1 (de) * | 2008-10-27 | 2010-04-29 | Robert Bosch Gmbh | Verfahren zur automatischen Achskorrektur bei einer Bearbeitungsmaschine zur Bearbeitung einer Warenbahn |
DE102009010023A1 (de) * | 2009-02-21 | 2010-08-26 | Robert Bosch Gmbh | Verfahren zur Bahnspannungseinstellung bei einer Bearbeitungsmaschine |
DE102011101842A1 (de) * | 2011-05-17 | 2012-11-22 | Robert Bosch Gmbh | Verfahren zum Regeln der Bahnspannung in einer Bahnbearbeitungsmaschine |
DE102011054693B4 (de) * | 2011-10-21 | 2019-05-16 | Océ Printing Systems GmbH & Co. KG | Verfahren zur Ausführung einer Pausenfunktion während des Druckbetriebs bei einem Tintendruckgerät |
DE102012013435A1 (de) * | 2012-04-04 | 2013-10-10 | Robert Bosch Gmbh | Verfahren zur Vorregistrierung einerBearbeitungsstation |
DE102021120371A1 (de) * | 2021-08-05 | 2023-02-09 | Multivac Sepp Haggenmüller Se & Co. Kg | Verpackungsmaschine mit folientransporteinrichtung sowie verfahren |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE789456A (fr) * | 1971-10-08 | 1973-01-15 | Bobst Fils Sa J | Procede et dispositif de correction du reperage d'images dans une machine a plusieurs stations |
FR2320185A1 (fr) * | 1975-08-08 | 1977-03-04 | Chambon Machines | Dispositif de reperage des couleurs pour impression sur materiaux legers |
DE3119398C2 (de) * | 1981-05-15 | 1984-05-30 | M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach | Vorrichtung zur Einstellung der Länge einer zu bedruckenden Bahn in einer Rollenrotationsdruckmaschine |
US5269222A (en) * | 1993-03-29 | 1993-12-14 | Johnson Robert W | Variable tension controller for rotary printing press |
JP3180291B2 (ja) * | 1997-11-10 | 2001-06-25 | 株式会社ミヤコシ | フォーム印刷機における用紙テンション制御装置 |
WO2000034042A1 (de) | 1998-12-04 | 2000-06-15 | Koenig & Bauer Aktiengesellschaft | Verfahren zur regelung eines registers |
WO2001056792A1 (de) * | 2000-02-04 | 2001-08-09 | Koenig & Bauer Aktiengesellschaft | Verfahren zur regelung einer bahnspannung in einer rotationsdruckmaschine |
US6499639B2 (en) * | 2001-02-12 | 2002-12-31 | Heidelberger Druckmaschinen Ag | Method and apparatus for dynamically controlling a web printing press |
DE10146984B4 (de) * | 2001-09-19 | 2006-11-16 | Neumann, Ralf, Dr. | Verfahren und Einrichtung zur Steuerung der Bahngeschwindigkeit einer Warenbahn |
DE10254836A1 (de) * | 2002-11-22 | 2004-06-17 | Windmöller & Hölscher Kg | Verfahren und Vorrichtung zur Regelung des Registers einer Druckmaschine |
DE10335886B4 (de) * | 2003-08-06 | 2013-12-19 | Manroland Web Systems Gmbh | Verfahren und Vorrichtung zum Regeln eines Gesamtschnittregisterfehlers einer Rotationsdruckmaschine |
JP4722631B2 (ja) * | 2005-09-07 | 2011-07-13 | 大日本スクリーン製造株式会社 | 印刷装置および張力制御方法 |
DE102006023825A1 (de) * | 2006-05-20 | 2007-11-22 | Robert Bosch Gmbh | Verfahren und System zur Antriebsregelung einer Druck- und/oder Verarbeitungsmaschine |
FR2910374B1 (fr) * | 2006-12-22 | 2009-04-03 | Goss Int Montataire Sa | Procede de commande d'une presse rotative et presse rotative |
-
2006
- 2006-01-31 DE DE102006004307A patent/DE102006004307B4/de active Active
-
2007
- 2007-01-25 US US12/223,381 patent/US8485095B2/en active Active
- 2007-01-25 WO PCT/EP2007/000845 patent/WO2007144031A1/de active Application Filing
- 2007-01-25 EP EP07801404A patent/EP1981791B1/de active Active
- 2007-01-25 AT AT07801404T patent/ATE494249T1/de active
- 2007-01-25 DE DE502007006180T patent/DE502007006180D1/de active Active
- 2007-01-25 ES ES07801404T patent/ES2357657T3/es active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2007144031A1 * |
Also Published As
Publication number | Publication date |
---|---|
ATE494249T1 (de) | 2011-01-15 |
US20090020641A1 (en) | 2009-01-22 |
US8485095B2 (en) | 2013-07-16 |
WO2007144031A1 (de) | 2007-12-21 |
DE102006004307A1 (de) | 2007-08-09 |
DE102006004307B4 (de) | 2013-08-14 |
ES2357657T3 (es) | 2011-04-28 |
EP1981791B1 (de) | 2011-01-05 |
DE502007006180D1 (de) | 2011-02-17 |
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