EP0694387B1 - Procédé et dispositif pour contrÔler l'état d'une machine transformable à imprimer des feuilles - Google Patents

Procédé et dispositif pour contrÔler l'état d'une machine transformable à imprimer des feuilles Download PDF

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Publication number
EP0694387B1
EP0694387B1 EP95109170A EP95109170A EP0694387B1 EP 0694387 B1 EP0694387 B1 EP 0694387B1 EP 95109170 A EP95109170 A EP 95109170A EP 95109170 A EP95109170 A EP 95109170A EP 0694387 B1 EP0694387 B1 EP 0694387B1
Authority
EP
European Patent Office
Prior art keywords
printing press
printing
difference
press
turning device
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.)
Expired - Lifetime
Application number
EP95109170A
Other languages
German (de)
English (en)
Other versions
EP0694387A1 (fr
Inventor
Bernd Lindner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Manroland AG
Original Assignee
MAN Roland Druckmaschinen AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Publication of EP0694387A1 publication Critical patent/EP0694387A1/fr
Application granted granted Critical
Publication of EP0694387B1 publication Critical patent/EP0694387B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F21/00—Devices for conveying sheets through printing apparatus or machines
    • B41F21/10—Combinations of transfer drums and grippers
    • B41F21/106—Combinations of transfer drums and grippers for reversing sheets, e.g. for perfecting machine
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/16—Programming systems for automatic control of sequence of operations

Definitions

  • the invention relates to a method and device for monitoring the condition of a convertible sheet-fed printing machine according to the preamble of the method and device claim.
  • Convertible sheet-fed printing presses which operate on the principle of the use of trailing edges, are generally known and can be used in the modes of perfecting or perfecting.
  • the changeover of such a printing machine from the printing mode to the perfecting mode means that the part of the printing machine following the turning device must be adjusted in relation to the part in front of the turning device in accordance with the format of the printing material.
  • Printing machines of this type therefore have clutch and changeover devices by means of which the mode change is to be carried out.
  • the changeover processes shown above are known from DE 3 526 123 A1.
  • other modules serving to change the format must also be converted depending on the format, which is also known from the above-mentioned document.
  • a device for securing a rotary printing press is known from EP 0 243 700 B1, which uses mechanical means to check the clamping condition of the coupling of the convertible turning device. Because of the large number of additional components to be provided, this solution is very cost-intensive.
  • the object of the present invention is therefore to further develop a method and a device for monitoring the condition of a convertible sheet-fed printing press in accordance with the preamble of the method or device claim, so that an exact check of the correct operating state is possible in a structurally simple manner.
  • a size corresponding to the angular position of the printing machine is detected both before and after the convertible turning device and these sizes are compared and evaluated with one another taking into account a format-dependent angle difference in the perfecting mode.
  • a correct clamping condition in the coupling of the convertible turning device results from the fact that the difference between these angle values does not change over time.
  • the absolute value of this difference does not play a role in monitoring, it only depends on the temporal constancy of this difference.
  • an additional second angle transmitter is provided after the last turning device.
  • the angle encoders can be designed as absolute encoders, but incremental encoders or the like can also be used.
  • the signals from the angle transmitters are fed to a perfecting and counterpressure computer which carries out the monitoring provided according to the invention.
  • the conversion processes for changing the operating mode from perfect to perfect and reverse printing and vice versa are also carried out by this perfecting and perfecting computer.
  • FIGS. 1 and 2 show in principle a sheet-fed offset printing press with a turning device after the first printing unit.
  • Figures 1 and 2 show a view or a top view of the first five printing units of a sheetfed offset printing press.
  • G the counter-pressure cylinders and T the intermediate transfer or bypass drums.
  • the sheets are fed via a feed drum A to the impression cylinder G of the first printing unit.
  • a regulated DC motor is provided in a main drive HA, through which a longitudinal shaft LW can be driven.
  • the longitudinal shaft LW has three feed gears E through which the impression cylinders G of the first, third and fifth printing units are driven.
  • the impression cylinder G, the transfer drum T, the turning drum W and the Feed drum A coupled to one another via a continuous gear train R.
  • the first counter-pressure cylinder G has, in a manner known per se, two toothed rings lying next to one another and adjustable relative to one another and which can be clamped to one another via a coupling (not shown).
  • the turning drum W has a single-wide gear and the downstream impression cylinder G has a double-wide gear.
  • the impression cylinders G and the transfer drums T of the subsequent printing units in turn have single-width gearwheels lying in one plane.
  • an electrically switchable clutch KLW is arranged in the longitudinal shaft LW in front of the second feed gearbox E.
  • a positioning drive PA is also attached to the feed gear E of the third printing unit via a further clutch KPA, by means of which, after opening the clutch KLW arranged in the longitudinal shaft LW and opening the clutch (not shown) in the double ring gear of the first impression cylinder G, the part of the printing press after the turning device can be adjusted in size from face to face and reverse and vice versa.
  • All of the changeover processes, and in particular the format-appropriate movement of the printing units relative to one another via the positioning drive PA are controlled by a perfecting and reverse printing computer SWR.
  • This perfecting and reverse printing computer controls the further format-dependent changeover processes, which are also not addressed here, whereby the adjustment of the gripper opening curve from perfecting to perfecting and reverse printing is only mentioned here as an example.
  • the perfecting and reverse pressure calculator SWR is connected to two angle encoders WG1, WG2.
  • the first angle encoder WG1 is attached to the single large feed drum A with one turn.
  • the second angle encoder WG2 is attached at the end to the end of the longitudinal shaft LW behind the last feed gear E. Since the longitudinal shaft LW and the feed drum A run at different speeds with respect to one another, a corresponding gear, but not shown here, is connected upstream of the second angle encoder WG2, so that the second Angle encoder WG2 runs at the same speed as the first angle encoder.
  • the first angle encoder WG1 is also connected to a machine control, not shown, so that the corresponding control controls all machine-rotation-angle-dependent operations (for example printing on / off or sheet query) via the first angle encoder WG1.
  • the SWR is also connected to the machine control system via a bus system, not shown.
  • the perfecting and reverse pressure calculator SWR now switches the positioning drive PA via the coupling KPA to the central feed gear E.
  • the positioning drive PA is decoupled via the coupling KPA.
  • the perfecting computer SWR opens the clutch KLW in the longitudinal shaft LW and the clutch, not shown, between the two gears of the first impression cylinder G.
  • the perfecting computer SWR controls the positioning drive PA in such a way that the Reversing drum W and the following printing units can be converted from, for example, perfecting to perfecting.
  • the perfecting and reverse printing computer SWR reads in the angle values of the second angle encoder WG2 and stops the positioning drive PA when the actual value supplied by the second angle encoder WG2 corresponds to the target value calculated depending on the format.
  • the positioning drive PA is then uncoupled again via the clutch KPA and the clutch on the first impression cylinder G and the clutch KLW in the longitudinal shaft are closed.
  • the beautiful and reverse pressure computer SWR additionally monitors the value supplied by the first angle transmitter WG1, to the extent that it does not change. This advantageously provides additional security with regard to the format changeover. This makes it possible to determine whether the couplings of the turning devices also separate properly.
  • the perfecting computer SWR continuously or at least temporarily compares the angle values supplied by the first and second angle transmitters WG1, WG2. If there is a change in the difference between these angle values, then the perfecting and reverse pressure computer SWR triggers the machine stop, for example via the machine control (not shown), or prevents the printing machine from starting up from standstill.
  • the difference with respect to which the perfecting and offset printing computer SWR compares the angle values supplied by the first and second angle transmitters WG1, WG2 with one another can be, for example, that which results from the changeover process previously carried out.
  • the perfecting and reverse printing computer SWR only carries out the intended comparison of the angle values each time the printing press comes to a standstill .
  • the invention was described above on a sheet-fed printing press with a convertible turning device.
  • the query according to the invention of the angular position of the machine is also used in a printing press with a plurality of reversible turning devices. It is then only essential that a first angle query is carried out in front of the turning devices and the second angle value query in the sheet travel direction after the last turning device.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)

Claims (8)

  1. Procédé pour surveiller l'état d'une machine d'impression de feuilles transformable, comportant au moins un dispositif de retournement de feuilles, caractérisé en ce que, dans la direction d'avance des feuilles, avant et après le dispositif de retournement transformable, il est détecté, à chaque fois, la position angulaire de la machine d'impression, en ce que la différence de ces deux valeurs est formée, et en ce que le fonctionnement de la machine est interrompu lors d'un écart de cette différence relativement à une valeur de consigne prédéfinie.
  2. Procédé selon la revendication 1,
    caractérisé en ce que la détection de la position angulaire de la machine d'impression est réalisée sous forme numérique.
  3. Procédé selon la revendication 1 ou 2,
    caractérisé en ce que la détection et la formation de la différence des deux positions angulaires de la machine d'impression sont effectuées pour chaque arrêt de la machine d'impression, et la machine d'impression est empêchée de démarrer lors d'un écart de la différence par rapport à la valeur de consigne prédéfinie.
  4. Procédé selon une des revendications précédentes,
    caractérisé en ce que, au moyen de la position angulaire détectée après le dispositif de retournement, on effectue la transformation de la machine de l'impression recto à l'impression recto-verso, et inversement.
  5. Procédé selon la revendication 4,
    caractérisé en ce que, pendant un processus de transformation, la position angulaire détectée avant le dispositif de retournement est testée pour une constance dans le temps.
  6. Dispositif pour surveiller l'état d'une machine d'impression de feuilles transformable, comportant au moins un dispositif de retournement de feuilles, en utilisant une des revendications de procédé 1 à 3,
    caractérisé en ce que, sur la machine d'impression aussi bien avant qu'également après le dispositif de retournement transformable, sont appliqués des premier et second capteurs angulaires (WG1,WG2), en ce que ces capteurs angulaires (WG1,WG2) sont reliés à un calculateur (SWR), grâce auquel on peut former la différence des valeurs angulaires fournies, et en ce que le calculateur (SWR) est réalisé pour arrêter l'entraînement principal (HA) de la machine d'impression quand un écart de la différence des valeurs angulaires fournies relativement à une valeur de consigne prédéfinie est déterminé.
  7. Dispositif selon la revendication 6,
    caractérisé en ce que les capteurs angulaires (WG1,WG2) sont réalisés comme capteurs de valeurs absolues du même type.
  8. Dispositif selon la revendication 7,
    caractérisé en ce qu'un entraînement de positionnement (PA) est en liaison fonctionnelle avec le calculateur (SWR), entraînement au moyen duquel, en liaison avec le second capteur angulaire (WG2), il peut être effectué la transformation de la machine de l'impression recto à l'impression recto-verso, et inversement.
EP95109170A 1994-07-29 1995-06-14 Procédé et dispositif pour contrÔler l'état d'une machine transformable à imprimer des feuilles Expired - Lifetime EP0694387B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4426992A DE4426992C2 (de) 1994-07-29 1994-07-29 Verfahren und Vorrichtung zur Zustandsüberwachung einer umstellbaren Bogendruckmaschine
DE4426992 1994-07-29

Publications (2)

Publication Number Publication Date
EP0694387A1 EP0694387A1 (fr) 1996-01-31
EP0694387B1 true EP0694387B1 (fr) 1997-08-13

Family

ID=6524507

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95109170A Expired - Lifetime EP0694387B1 (fr) 1994-07-29 1995-06-14 Procédé et dispositif pour contrÔler l'état d'une machine transformable à imprimer des feuilles

Country Status (4)

Country Link
EP (1) EP0694387B1 (fr)
JP (1) JP3112149B2 (fr)
AT (1) ATE156753T1 (fr)
DE (2) DE4426992C2 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6684778B2 (en) * 2001-05-25 2004-02-03 Ryobi, Ltd. Printing press with a sheet-turning-over-mechanism
US9079388B2 (en) * 2006-02-16 2015-07-14 Heidelberger Druckmaschinen Ag Control of a printing press using a torsion model and printing press controlled by torsion model
DE102007018539B4 (de) * 2006-05-17 2009-12-10 Manroland Ag Verfahren zum Betreiben einer Bogendruckmaschine
DE102015118911A1 (de) 2014-11-05 2016-05-12 manroland sheetfed GmbH Antrieb für Bogenrotationsdruckmaschinen
DE102016121035A1 (de) 2015-11-04 2017-05-04 manroland sheetfed GmbH Antrieb für Bogenrotationsdruckmaschinen
JP6842938B2 (ja) * 2017-01-31 2021-03-17 リョービＭｈｉグラフィックテクノロジー株式会社 印刷機の駆動制御装置及び印刷機の駆動制御方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5717714A (en) * 1980-07-08 1982-01-29 Daiwa Can Co Ltd Manufacture of canned provision under nitrogen gas atmosphere
DD160049A1 (de) * 1981-06-30 1983-04-27 Volker Eichler Steuersystem fuer mehrfarbenbogenrotationsdruckmaschinen
DD229076A1 (de) * 1984-09-05 1985-10-30 Polygraph Leipzig Verfahren und einrichtung zum automatischen betriebsartwechsel
DD237426A3 (de) * 1984-09-05 1986-07-16 Polygraph Leipzig Einrichtung zum automatischen betriebsartwechsel
DE3614734A1 (de) * 1986-04-30 1987-11-05 Heidelberger Druckmasch Ag Vorrichtung zum absichern einer rotationsdruckmaschine
DE3836310C2 (de) * 1988-10-25 1998-01-15 Heidelberger Druckmasch Ag Verfahren zum Einstellen einer Wendeeinrichtung an einer Druckmaschine mit mehreren Druckwerken
JPH04224950A (ja) * 1990-12-27 1992-08-14 Sumitomo Heavy Ind Ltd 反転機構付枚葉印刷機
US5357860A (en) * 1992-03-27 1994-10-25 Komori Corporation Cylinder phase adjustment controlling apparatus for printing press

Also Published As

Publication number Publication date
DE4426992A1 (de) 1996-02-08
JPH0852860A (ja) 1996-02-27
EP0694387A1 (fr) 1996-01-31
DE4426992C2 (de) 1998-01-22
DE59500504D1 (de) 1997-09-18
JP3112149B2 (ja) 2000-11-27
ATE156753T1 (de) 1997-08-15

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