EP1837178A2 - Procédé de compensation d'une vibration dans une imprimante - Google Patents
Procédé de compensation d'une vibration dans une imprimante Download PDFInfo
- Publication number
- EP1837178A2 EP1837178A2 EP07103368A EP07103368A EP1837178A2 EP 1837178 A2 EP1837178 A2 EP 1837178A2 EP 07103368 A EP07103368 A EP 07103368A EP 07103368 A EP07103368 A EP 07103368A EP 1837178 A2 EP1837178 A2 EP 1837178A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- group
- frequency
- compensating
- counter
- frequency components
- 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
- 238000007639 printing Methods 0.000 title claims abstract description 87
- 238000000034 method Methods 0.000 title claims abstract description 37
- 238000005259 measurement Methods 0.000 claims abstract description 10
- 230000010355 oscillation Effects 0.000 claims description 28
- 238000001228 spectrum Methods 0.000 claims description 16
- 238000010348 incorporation Methods 0.000 claims 2
- 230000005284 excitation Effects 0.000 description 5
- 238000011161 development Methods 0.000 description 4
- 230000018109 developmental process Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 239000011111 cardboard Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000007645 offset printing Methods 0.000 description 1
- 239000011087 paperboard Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F13/00—Common details of rotary presses or machines
- B41F13/08—Cylinders
- B41F13/085—Cylinders with means for preventing or damping vibrations or shocks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F13/00—Common details of rotary presses or machines
- B41F13/0008—Driving devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
- B41P2213/00—Arrangements for actuating or driving printing presses; Auxiliary devices or processes
- B41P2213/40—Auxiliary devices or processes associated with the drives
- B41P2213/42—Vibration-dampers for machine parts
Definitions
- the invention relates to a method for compensating an oscillation, which has a frequency spectrum with a number of discrete frequency components, in a printing machine, wherein at least one counter-torque for compensating at least one discrete frequency component of the oscillation is introduced into the printing press.
- a method and a device for compensating a vibration in a printing press by introducing counter-moments are known. At least one eigenform of the printing machine is determined and at a location of the drive train of the printing press, at which the eigenform is not zero, the respective counter-momentum for the compensation of the entire oscillation is determined and stored. During operation of the printing press, the predetermined counter-torque is applied to said location, so that the oscillation is maximally reduced.
- the counter-torque is generated by means of a cam gear. The counter torque can be generated depending on the machine speed or machine frequency.
- Object of the present invention is to provide a method for compensating for a vibration in a printing machine by introducing one or more counter-moments, in which the vibration can be controlled with a plurality of actuators with little effort.
- At least one counter-torque is used to compensate for at least one discrete frequency component of the vibration in the printing press, in particular the sheet-fed press, brought in.
- a first group of one or more frequency components is compensated by introducing one or more predetermined counter-moments, and a second group of one or more frequency components is formed by introducing one or more in response to a measurement of at least one signal, ie, a signal, during operation of the printing machine or more signals, which or at least one of the one or more frequency components contains or contain certain counter moments compensated, in particular preferably completely or accurately compensated.
- the invention is based on the idea of compensating a vibration, in particular a torsional vibration, in a printing machine with a method in which the individual frequency components of the vibration are subdivided into a plurality, preferably two groups or classes.
- the frequency spectrum of a printing machine without acting compensation method is considered, and there is a classification or distribution of the detected frequency components.
- a compensating method optimally adapted for the purpose of the most complete compensation is selected, so that the occurring total oscillation amplitude is minimized.
- the vibration is combated in an advantageous manner with the least possible effort.
- a counter-momentum ideally has an amplitude adjusted in absolute terms and an antiphase in relation to the oscillation to be compensated, such that the superimposed amplitude is as low as possible, preferably disappears (becomes zero).
- the vibration may be a vibration of the entire printing press or a machine part, for example a shaft of a cylinder.
- the shaft may be a directly or indirectly driven shaft.
- the vibration may relate, for example, to the position, the speed or the acceleration.
- the oscillation may, for example, also be a vibration of a so-called virtual machine shaft, that is to say a vibration of a relative position, a relative speed or a relative acceleration between two machine parts.
- the course of the predetermined counter torques for the first group can be stored in software or in a control unit of the printing press in terms of hardware or be available for the compensation.
- the measured signal may be the signal of at least one machine encoder, for example an engine speed sender.
- the one or more predetermined counter-moments for compensating the first group of one or more frequency components may be determined according to the technical teaching of the document DE 199 14 627 A1 or the document US 6,401,620 B1 , applied according to the invention applied only with respect to the first group, that is, only a part or a subset of the frequency content of the vibration, not the entire vibration done.
- the entire disclosure content of the document DE 199 14 627 A1 and the document US 6,401,620 B1 is incorporated by explicit reference in the disclosure of this presentation.
- the one or more countermeasures for compensating the second group of one or more frequency components as a function of measurement of a signal which contains at least the one or more frequency components as a result of the operation of the printing press can be determined according to the technical teaching of the document DE 101 49 525 A1 or the document US 2002/0158180 A1 Applied according to the invention, applied only with respect to the second group, ie only one other part or another subset of the frequency content of the oscillation, not the entire oscillation.
- the entire disclosure content of the document DE 101 49 525 A1 and the document US 2002/0158180 A1 is incorporated by explicit reference in the disclosure of this presentation.
- the second group contains only one or more frequency components which are not contained in the first group.
- the frequency components of the first group and the second group together can give the essential part or exactly the frequency spectrum.
- the essential part is understood to mean that part of the frequency spectrum that is not negligible for combating the vibration below an acceptance threshold.
- the frequency component or components of the first group may be integer multiples (generally including 1, preferably greater than 1) of the machine frequency and the frequency component or frequencies of the second group may be non-integer multiples of the machine frequency.
- the machine frequency or drive frequency, in particular main drive frequency, refers in particular to the speed, timing or copy speed.
- load-relevant frequencies and the frequency component (s) of the second group are register-relevant frequencies.
- Frequencies are load-relevant if they have an integer order at the machine frequency, require a high torque for compensation, and are deterministic insofar as the amplitude and phase of the frequency component can be determined before operation of the printing press.
- Frequencies are registration relevant if they have a non-integer order to the machine frequency, require a small moment, typically only a few Newton meters, for compensation and are not predictable or specimen specific, as individually determining the amplitude and phase of the frequency component of the oscillation during operation of the press and to compensate.
- the vibration can be represented substantially, that is, within an error interval acceptable for the application of the vibration compensation, by the low-frequency frequency components.
- the introduction of the (predetermined) counter-moments of the first group of the frequency component (s) and / or the counter-torque (s) of the second group of the frequency component (s) determined in the method according to the invention can be determined according to the amplitude characteristic of one of the modes of the printing machine selected places.
- the measurement of the signal preferably comprises at least one orthogonal correlation for determining the amplitude and phase of a frequency component of the second group.
- the one or more predetermined counter-moments can be generated and introduced by means of one or more mechanical devices.
- the one or more mechanical devices may be cam gears, in particular cams.
- the cam gears, in particular cams may be designed such that they periodically with one or more integral multiples (generally including 1, preferably greater than 1) of the machine frequency act.
- one or more electrical curves in particular periodic control profiles for an electric drive, can be used to control an actuator so that one or more predetermined counter-moments are generated and introduced by means of one or more electrical curves.
- a According to the invention used electrical curve can be carried out in particular depending on the machine frequency, ie machine speed dependent.
- the one or more counter-moments of the second group determined as a function of the measurement are introduced only if the frequency component corresponding to the counter-torque or resonances is in resonance with a natural frequency of the printing press.
- the discrete vibration compensation is preferably operated or turned on only when it is actually required because an effect on the printing machine is expected.
- a modal compensation of the register-relevant (non-integer) and / or the load-relevant (integer) frequency components can take place.
- the one or more predetermined counter moments of the first group in the vicinity of the beginning and / or the end substantially at the beginning and / or at the end of the printing unit row of the printing press, in particular on devices with stored torque curves , and the one or more depending on the measurement determined counter moments of the second group in the vicinity of the center or substantially in the middle of the printing unit row of the printing press, in particular by means of the main motor of the printing press, are introduced.
- the lever arms in the vicinity of the beginning and / or the end of the printing unit group are particularly favorable for compensation or the mode shapes coupling to the oscillation.
- the passerrelevanten with this drive practically an actuator without additional hardware or a hardware change is available. But it is clear that, alternatively, a Additional actuator can be used.
- the frequency component or components of the second group are determined from the difference between the signals of at least two sensors or sensors which are arranged at mutually different locations of the printing press.
- At least one of the predetermined counter torques and at least one of the counter torques determined on the basis of the signal or signals are introduced together by an actuator.
- the counter torques for both classes to be introduced into the printing machine for the compensation can be applied by means of an identical actuator of the printing press.
- the counter-moments can be switched to a drive torque of the actuator.
- this actuator may be located near the beginning or the end of the printing unit row of the printing press.
- the inventive method can be used in particular in a lithographic printing press or offset printing machine.
- the printing press can be a multi-color printing press, in particular a plurality of printing units in series, typically comprising 4, 6 or 8 printing units.
- the printing machine can preferably process paper or cardboard as substrates.
- a printing press according to the invention has a device suitable or implemented for carrying out the method according to the invention for compensating an oscillation which has a frequency spectrum with a number of discrete frequency components, and at least one actuator for introducing at least one counter torque for compensating at least one discrete frequency component of the oscillation in the printing machine ,
- the printing press may each have at least one actuator for introducing one or more predetermined counter moments for the first group of frequency components at the ends of the row of printing units and at least one actuator, in particular the Main drive of the printing press may have, substantially in the middle of the printing group or the printing press, with which one or more counter-moments for the second group of frequency components can be introduced.
- the printing press may have at least one, preferably at least two encoders or sensors, which are arranged in the printing press in such a way that they do not lie in places where the inherent shape coupled to the oscillation is zero.
- the encoders can be in particular encoders.
- FIG. 1 shows a schematic qualitative representation of an exemplary representative frequency spectrum of a vibration of a sheet-fed press with a large number of printing units.
- the magnitude of the amplitude A is plotted in appropriate units (au) as a function of the relative frequency f with respect to the machine frequency ⁇ M.
- the frequency spectrum has several discrete frequency lines of different amplitudes. There are frequency components which represent integer multiples (including 1) of the machine frequency ⁇ M. Furthermore, there are frequency components which are non-integer multiples of the machine frequency ⁇ M. The amplitudes of the non-integer frequency components are significantly lower than those of the integer frequency components. The sum of the frequency components of the frequency spectrum converges with increasing frequency against the vibration, that is, the vibration is represented with sufficient accuracy by the low frequency components.
- the absolute frequency of the frequency components varies with the machine frequency ⁇ M.
- the amplitude of a frequency component can also vary.
- an amplitude variation of the integer moments as a function of the frequency for integer frequency components either does not exist or is negligibly small within the required precision.
- a frequency component acquires particular importance precisely when it resonates at a natural frequency of the printing press, that is to say when the frequencies of the frequency component and a natural oscillation are similar or sufficiently coincident, since in particular a resonance excitation of the printing press can take place to a vibration.
- FIG 2 is a schematic representation of an embodiment of a printing press 14 according to the invention, here a sheet-fed press, with six printing units 16, a feeder 28 and a boom 30.
- the printing press 14 can be excited in an eigenform 18 to a vibration, in particular in consequence of With reference to Figure 1 explained exposure of resonant frequency components of noise (vibration).
- the printing press 14 has mechanical devices 32, here two cam mechanisms, as in the document DE 199 14 627 A1 or document US 6,401,620 B1 explained in detail, at the ends of the series of printing units 16, for generating predetermined counter moments on. These positions are particularly advantageous with respect to the amplitude characteristic of the eigenform 18 shown.
- the frequencies of the counter moments are proportional to the machine frequency, in particular multiples (including 1) of the machine frequency.
- the amplitudes of the counter torques can be constant: with the predetermined counter torques, vibrations generated by vibration exciters with a constant force effect or torque effect are compensated, so that the necessary amplitudes do not change with the machine frequency for compensation.
- a signal representative of the oscillation is converted by means of a transmitter 22 and supplied to a control device 24. With the aid of the control device 24, the required counter-torque for compensation can be calculated.
- the counter-torque is applied to the drive torque of the main drive 26, so that a compensation of the oscillation of the eigen-form 18 is effected. Oscillation and the counter-momentum induced by the counter-momentum should preferably cancel each other, at least the resulting total vibration should be below an acceptance threshold.
- the transmitter 22 will be able to measure a signal, in particular, when an oscillation excitation or a frequency of a vibration exciter comes into resonance with the frequency of the eigenform 18.
- the position of the transmitter 22 is advantageously chosen so that the vibration to be measured of the eigenform at the measuring location has a significant amplitude deviation and is not zero.
- For differential measurements of two or more encoder signals it should be noted that there is advantageously a clear difference deviation of the individual signal amplitudes of the two or more encoder signals. It is also possible to optimally arrange and evaluate a plurality of encoders for a plurality of eigenmodes in a further development of the printing press according to the invention which is not shown graphically.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Inking, Control Or Cleaning Of Printing Machines (AREA)
- Vibration Prevention Devices (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006013752A DE102006013752A1 (de) | 2006-03-24 | 2006-03-24 | Verfahren zur Kompensation einer Schwingung in einer Druckmaschine |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1837178A2 true EP1837178A2 (fr) | 2007-09-26 |
EP1837178A3 EP1837178A3 (fr) | 2011-04-06 |
EP1837178B1 EP1837178B1 (fr) | 2012-05-23 |
Family
ID=38171328
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07103368A Active EP1837178B1 (fr) | 2006-03-24 | 2007-03-02 | Procédé de compensation d'une vibration dans une imprimante |
Country Status (5)
Country | Link |
---|---|
US (1) | US8375856B2 (fr) |
EP (1) | EP1837178B1 (fr) |
JP (1) | JP5026123B2 (fr) |
CN (1) | CN101041287B (fr) |
DE (1) | DE102006013752A1 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007062338A1 (de) | 2007-12-22 | 2009-06-25 | Manroland Ag | Rotationsdruckmaschine mit energieautarken Sensorsystemen |
DE102014113810A1 (de) | 2014-09-24 | 2016-03-24 | Océ Printing Systems GmbH & Co. KG | Verfahren zum Dämpfen einer Oszillation einer angetriebenen Walze in einem Drucksystem |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008060740A1 (de) | 2008-01-23 | 2009-07-30 | Heidelberger Druckmaschinen Ag | Druckmaschine |
DE102021103214A1 (de) | 2021-02-11 | 2022-08-11 | Koenig & Bauer Ag | Verfahren zur Maschinenüberwachung während des Betriebes einer Verarbeitungsmaschine |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4412945A1 (de) | 1992-10-16 | 1995-10-19 | Heidelberger Druckmasch Ag | Vorrichtung und Verfahren zur Dämpfung von mechanischen Schwingungen von Druckmaschinen |
DE19914627A1 (de) | 1999-03-31 | 2000-10-05 | Heidelberger Druckmasch Ag | Verfahren und Vorrichtung zur Kompensation der Drehschwingungen einer Druckmaschine |
DE10149525A1 (de) | 2000-10-26 | 2002-05-02 | Heidelberger Druckmasch Ag | Verfahren zur Kompensation mechanischer Schwingungen in Maschinen |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19652769A1 (de) * | 1996-12-18 | 1998-06-25 | Voith Sulzer Papiermasch Gmbh | Verfahren und Vorrichtung zur Dämpfung von Kontaktschwingungen |
DE10047725A1 (de) * | 2000-09-27 | 2002-04-11 | Koenig & Bauer Ag | Verfahren zum Betreiben eines Hauptantriebes |
CZ302554B6 (cs) * | 2000-10-26 | 2011-07-13 | Heidelberger Druckmaschinen Ag | Zpusob kompenzace mechanického kmitání, zejména v tiskarských strojích |
DE10249475A1 (de) * | 2001-11-20 | 2003-09-11 | Heidelberger Druckmasch Ag | Verfahren und Vorrichtung zum Unterdrücken von Schwingungen in einer drucktechnischen Maschine |
DE10254118B4 (de) * | 2001-12-12 | 2017-01-19 | Heidelberger Druckmaschinen Ag | Verfahren zum Antreiben einer drucktechnischen Maschine |
DE10259494B4 (de) * | 2002-01-21 | 2017-01-26 | Heidelberger Druckmaschinen Ag | Verfahren zum Steuern einer Druckmaschine |
DE10217707A1 (de) | 2002-04-17 | 2003-11-06 | Heidelberger Druckmasch Ag | Kompensation von Zylinderschwingungen in bedruckstoffverarbeitenden Maschinen |
DE10338976B4 (de) * | 2002-09-19 | 2017-02-16 | Heidelberger Druckmaschinen Ag | Verfahren zur Rhythmuskompensation bei Bogenrotationsdruckmaschinen |
DE10309670A1 (de) * | 2003-03-06 | 2004-09-16 | Man Roland Druckmaschinen Ag | Regelvorrichtung |
DE10355122A1 (de) * | 2003-11-24 | 2005-06-23 | Man Roland Druckmaschinen Ag | Vorrichtung und Regelverfahren zur Kompensation von Regelabweichungen bei geregelten Antriebssystemen von Transport- und Bearbeitungsmaschinen, insbesondere Druckmaschinen |
US7478593B2 (en) * | 2004-12-23 | 2009-01-20 | Koenig & Bauer Ag | Method for making compensations for register deviations |
DE102006004967A1 (de) * | 2006-02-01 | 2007-08-02 | Heidelberger Druckmaschinen Ag | Verfahren zur aktiven Kompensation von Schwingungen in einer Bedruckstoff verarbeitenden Maschine und Bedruckstoff verarbeitende Maschine |
-
2006
- 2006-03-24 DE DE102006013752A patent/DE102006013752A1/de not_active Withdrawn
-
2007
- 2007-03-02 EP EP07103368A patent/EP1837178B1/fr active Active
- 2007-03-22 JP JP2007074036A patent/JP5026123B2/ja active Active
- 2007-03-23 CN CN2007100893849A patent/CN101041287B/zh active Active
- 2007-03-26 US US11/728,571 patent/US8375856B2/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4412945A1 (de) | 1992-10-16 | 1995-10-19 | Heidelberger Druckmasch Ag | Vorrichtung und Verfahren zur Dämpfung von mechanischen Schwingungen von Druckmaschinen |
DE19914627A1 (de) | 1999-03-31 | 2000-10-05 | Heidelberger Druckmasch Ag | Verfahren und Vorrichtung zur Kompensation der Drehschwingungen einer Druckmaschine |
US6401620B1 (en) | 1999-03-31 | 2002-06-11 | Heidelberger Druckmaschinen Ag | Method and apparatus for compensating torsional vibrations of a printing machine by introducing torques which compensate the vibration excitation |
DE10149525A1 (de) | 2000-10-26 | 2002-05-02 | Heidelberger Druckmasch Ag | Verfahren zur Kompensation mechanischer Schwingungen in Maschinen |
US20020158180A1 (en) | 2000-10-26 | 2002-10-31 | Matthias Noell | Method for compensating for mechanical oscillations in machines |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007062338A1 (de) | 2007-12-22 | 2009-06-25 | Manroland Ag | Rotationsdruckmaschine mit energieautarken Sensorsystemen |
DE102014113810A1 (de) | 2014-09-24 | 2016-03-24 | Océ Printing Systems GmbH & Co. KG | Verfahren zum Dämpfen einer Oszillation einer angetriebenen Walze in einem Drucksystem |
DE102014113810B4 (de) * | 2014-09-24 | 2017-06-08 | Océ Printing Systems GmbH & Co. KG | Verfahren zum Dämpfen einer Oszillation einer angetriebenen Walze in einem Drucksystem |
Also Published As
Publication number | Publication date |
---|---|
EP1837178A3 (fr) | 2011-04-06 |
JP2007253623A (ja) | 2007-10-04 |
CN101041287A (zh) | 2007-09-26 |
DE102006013752A1 (de) | 2007-09-27 |
US8375856B2 (en) | 2013-02-19 |
CN101041287B (zh) | 2010-12-29 |
JP5026123B2 (ja) | 2012-09-12 |
EP1837178B1 (fr) | 2012-05-23 |
US20070221086A1 (en) | 2007-09-27 |
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