EP2072252A2 - Procédé et agencement de compensation d'asynchronismes d'angles de rotation en fonction du réglage - Google Patents

Procédé et agencement de compensation d'asynchronismes d'angles de rotation en fonction du réglage Download PDF

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Publication number
EP2072252A2
EP2072252A2 EP08172069A EP08172069A EP2072252A2 EP 2072252 A2 EP2072252 A2 EP 2072252A2 EP 08172069 A EP08172069 A EP 08172069A EP 08172069 A EP08172069 A EP 08172069A EP 2072252 A2 EP2072252 A2 EP 2072252A2
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EP
European Patent Office
Prior art keywords
cylinder
drive
rotation
blanket
encoder
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
Application number
EP08172069A
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German (de)
English (en)
Other versions
EP2072252B1 (fr
EP2072252A3 (fr
Inventor
Martin Riese
Victor Hefftler
Bodo Zirnstein
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.)
Koenig and Bauer AG
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Koenig and Bauer AG
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Publication of EP2072252A2 publication Critical patent/EP2072252A2/fr
Publication of EP2072252A3 publication Critical patent/EP2072252A3/fr
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Publication of EP2072252B1 publication Critical patent/EP2072252B1/fr
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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
    • B41F13/004—Electric or hydraulic features of drives
    • B41F13/0045—Electric 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
    • B41P2213/70—Driving devices associated with particular installations or situations
    • B41P2213/73—Driving devices for multicolour presses
    • B41P2213/734—Driving devices for multicolour presses each printing unit being driven by its own electric motor, i.e. electric shaft
    • 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
    • B41P2213/90—Register control

Definitions

  • the invention relates to a method and an arrangement for the compensation of control-induced rotational angle Asynchronticianen two independently driven cylinders in rotary printing machines, which occur during the feed movement of the cylinder, according to the preamble of the first claim.
  • printing presses such as offset printing presses
  • individual cylinders are spun off from the continuous drive wheel train in order to shorten set-up times and are driven individually parallel to the main drive.
  • plate cylinders in offset printing units may have a separate drive motor (single drive), so that, for example, all plate cylinders can be simultaneously rotated to the plate change position in order to be able to perform the plate change on all printing units at the same time (eg DE 196 23 224 C1 ).
  • the angular positions of the individually and centrally driven cylinders must be detected with high precision in order to enable slip-free synchronization with adjacent, rolling cylinders. Synchronization is understood to mean the continuous assurance of the correct angular position assignment of the adjacent cylinders.
  • rotary encoders are arranged in the drive wheel train, which specify the rotation angle setpoints for the control of the individual drives.
  • the synchronous rotation of the respective adjacent cylinders is to ensure that the cylinder surfaces always roll without slip on each other and no relative movements at the contact points of the cylinder surfaces come about, whereby either the print image transfer is impaired or tensile stresses are generated in the substrate.
  • bearer rings are arranged on both sides of the cylinder whose outer diameter is adapted to the cylinder jacket diameters.
  • the rubber cylinder is adjusted to the plate cylinder until the associated bearer rings roll on each other.
  • the translatory pivotal movement of the blanket cylinder after making the surface contact is approximately tangential to the plate cylinder surface, the blanket comes into contact with the clamped on the plate cylinder pressure plate.
  • the rubber and plate cylinders on both sides associated bearer rings come into contact with each other and finally roll off each other in a force-locking, whereby they also cause a mechanical support of the synchronization of the rotational movement of the rolling cylinder rolling on each other in addition to the more uniform pressure between the two cylinders.
  • the plate cylinder is caused on the one hand by the frictional surface contact between the rubber and pressure plate or between the bearer rings to rotate. On the other hand, this is counteracted by the position control of the plate cylinder drive, which has not detected the displacement of the rubber cylinder axis of rotation.
  • the rotor of the encoder (hollow shaft encoder) is firmly mounted on the cylinder axis and the stator of the encoder (encoder housing) is supported by a torque arm on the frame of the printing press.
  • the stator of the encoder (encoder housing) is supported by a torque arm on the frame of the printing press.
  • Another synchronization problem arises from the changing contact pressure of the cylinder combination blanket cylinder / impression cylinder.
  • the blanket cylinder forms with an adjacent impression cylinder on which the sheets are transported by the respective printing unit, the pressure zone, wherein the pressure changes as the passage of the cylinder passages through the pressure zone abruptly.
  • Due to the different bending of the blanket cylinder at full pressure (touch blanket / substrate) and reduced pressure (channel passage) detects the rotary encoder an apparent rotation, since the rotary encoder, which sits on the bending rubber cylinder leg, moves relative to the frame-fixed support point in Abicalzddling. This apparent rotation then attempts to control the drive control for the plate cylinder, whereby an adverse relative movement of the cylinder surfaces is only generated by the angle control itself.
  • the invention is therefore based on the object to minimize the positional error when pivoting a second cylinder to a first cylinder, especially in the pressure-on circuit of a blanket cylinder to a plate cylinder in an offset printing unit, at the moment of contact of the cylinder.
  • the object is achieved by a method or an arrangement for compensating control-induced rotational angle asynchronities of two independently driven cylinders in rotary printing machines, which occur during the feed movement of the cylinder, wherein a first, mounted in a frame cylinder associated with the electric single drive is, with an adjacent second pivotally mounted cylinder, which is connected to a second drive, during the printing operation is in rolling contact, a rotary encoder on the second cylinder is arranged, which provides rotation angle set values for a drive control of the single drive, the Drehwinkelgebergepuruse a rotatable to forms the axis of rotation of the second cylinder mounted stator of the rotary encoder and is supported via a torque arm to a frame-fixed Geberabstützddling, and the rotor of the rotary encoder rotationally fixed to the axis of rotation of the z wide cylinder is connected.
  • Characteristic of the method is that a control-related lag by the following error ⁇ S between the target rotational angular position (synchronous position) and the actual rotational angular position of the first cylinder during the pivoting of the second cylinder to the first cylinder by shifting the Geberabstweiluss from conventional Geberabstütztician, which allows a rotation angle synchrony with hired cylinder without consideration of control errors, is compensated, so that the cylinder surfaces meet at the moment of contact in synchronous position to each other.
  • a suitable arrangement for the rotary encoder for carrying out the method is characterized in that the Geberabstweiltician is arranged in the radial and / or circumferential direction away from the conventional Geberabstweiltician, the direction and magnitude of the deviation from the conventional Geberabstütztician be determined by the trailing error to be compensated.
  • the invention has the advantage that pressure disturbances causing relative movements of the synchronized cylinders during pivoting in the contact area can be safely avoided.
  • Fig. 1 shows a schematic representation of a printout section of a Bogenoffsetrotationsdruckmaschine in side view with a single-sized plate cylinder 1.P, a pivoting single-sized blanket cylinder 2.G, which is mounted with its shaft 10 on both sides in eccentric bearings 4, and a double-sized impression cylinder 3. Die Zylinder Sind in Side frames of the printing press stored.
  • the plate cylinder 1.P is associated with a first drive, which may be, for example, a known single drive M, which is associated with the plate cylinder 1.P and of a (not shown) known drive controller with respect to. Rotational angular position, rotational speed and acceleration with the blanket cylinder. G is synchronized.
  • the blanket cylinder 2.G is driven in the embodiment via a central drive wheel train by a second drive, the main press machine drive. Between plate cylinder 1.P and rubber cylinder 2.G there is no positive mechanical drive connection.
  • the individually driven plate cylinder 1.P are associated with two bearer rings on both sides, which cooperate in a known manner with two other bearer rings on the shaft 10 of the blanket cylinder 2.G.
  • the bearer rings roll in pairs from each other frictionally. For reasons of simplification was in the Fig. 1 not differentiated between the Abicalz Vietnamese the bearer rings and the contact area of the cylinder surfaces.
  • a first rotary encoder 5 for detecting the absolute angular position (incremental encoder or encoder) is arranged centrally.
  • a second rotary encoder 6 is mounted centrally on the shaft 10 of the adjacent blanket cylinder 2.G whose rotor is 6.R rotatably connected to the shaft 10 and the stator 6.S (rotary encoder housing) is rotatably mounted on the shaft 10 ,
  • the shaft 10 can be pivoted by rotation of the eccentric 4 between a "pressure-on" - position and a "pressure-off" - position.
  • a rigid Statorabstützung 7 is fixed and arranged in the radial direction, which ensures a rotational angle play free storage of the stator 6.S.
  • the Statorabstützung 7 is rotatably supported at its end facing away from the stator 6.S end to a frame-fixed stop, the Geberabstütztician 8.1,8.2, or 8.3, to transform the pivoting movement of the blanket cylinder 2.G in a rotational movement of the stator 6.S.
  • the stator support 7 is designed, for example, as a rod-shaped anti-twist device welded to the rotary encoder housing.
  • the Statorabstützung 7 abuts a stop contour, which is aligned so that the extended longitudinal axis of the Statorabstützung 7 points in the direction of the plate cylinder 1.P.
  • the Statorabstützung 7 is non-positively connected for play-free storage on the stop 8, for example via a tension spring 9 with the stopper 8. Since the pivoting movements of the blanket cylinder 2.G also cause a change in the distance to the stop 8, the StatorabstNeillung 7 is slidably mounted in its longitudinal direction on the stop 8.
  • the Statorabstützung 7 may also be connected in a rotary bearing with the stopper 8. However, this then requires a variable-length design of the stator support 7, which is for this purpose formed in two parts with parts overlapping in the longitudinal direction, which are movable in the longitudinal direction relative to each other.
  • the solution according to the invention now provides for supporting the rotary encoder housing not at the conventional encoder support point 8.0, but at a remote encoder support point 8.1, 8.2 or 8.3.
  • the proposed new Geberabstweilness, 8.1,8.2 or 8.3 are located away from the conventional Geberabstschreib artss 8.0, the direction and the amount of the distance of the Geberabstützn invention 8.1,8.2,8.3 from the conventional GeberabstNeilltician 8.0 of the swivel gear geometry and the pivoting curve of the axis of rotation of the blanket cylinder. 2 G and the following error to be compensated for the drive control.
  • the positions of the Geberabstütz and 8.1,8.2 or 8.3 relative to the conventional Geberabstweilticianen 8.0 and the positions relative to the axes of rotation of the blanket cylinder 2.G are variable due to a degree of freedom for the Geberabstweil.
  • the encoder control points serving to compensate for the control errors are located on a geometric location which can be determined from the geometrical conditions of the pivotal movement of the blanket cylinder 2.G with the aid of CAD programs for the time of the bearer ring contact. In the FIG. 1 are exemplary and not to scale three donor support points 8.1,8.2 or 8.3 so determined.
  • the generation of a leading setpoint value for the drive controller of the plate cylinder 1.P can therefore be achieved, for example, by changing the lever length of the stator support 7 and / or changing the relative position to the pivoting curve of the axis of rotation of the blanket cylinder 2.G compared to the conventional encoder support point 8.0.
  • FIG. 1 is the conventional Geberabstütztician 8.0 located in the rolling point of plate and blanket cylinder 1.P, 2.G or in the rolling point of the associated bearer rings.
  • the further points 8.1.8.2,8.3 denote possible encoder support points, in which the Drehwinkelgebergephase is rotated in the approach phase of the cylinder surfaces by an additional angle which compensates for the following error .DELTA. ⁇ S and due to the acceleration of the blanket cylinder 2.G and the regulation delay during the pressure -an motion arises.
  • a suitable point 8.3 is preferably selected from the set of possible Geberabstützs 8 which approximately compensates for the drag error ⁇ S while the pressure-to-motion and at the same time for eliminating the influence of the bending vibration of the blanket cylinder 2.G due to the channel punches during rolling on the printing cylinder 3 in the direction of the rubber cylinder 2.G (connecting line rubber cylinder 2.G - pressure cylinder 3) is arranged.
  • the encoder support point 8 should lie in the region of the cylinder circumference (8.1) in order to reduce the effects of disturbances in the area of the encoder support, in particular concentricity error of the encoder and encoder mounting, by using the largest possible lever length.
  • the finally selected encoder support point will advantageously be a compromise between the two requirements and is exemplified in the drawing as the encoder support point 8.2.
  • the blanket cylinder 2.G In the "print-on" position of the blanket cylinder 2.G is employed in a known manner both to the plate cylinder 1.P and to the impression cylinder 3 and transmits the pressure (partial) image of the plate cylinder 1.P on the printing cylinder 3 guided bows.
  • the second rotary encoder 6 on the shaft 10 of the blanket cylinder 2.G detects the time course of the rotational angle values of the blanket cylinder 2.G and transmits them to the drive control of the single drive M for the plate cylinder 1.P to the rotation of the plate cylinder 1.P with the synchronized by the drive wheel train rubber cylinder 2.G to synchronize.
  • Both cylinders 1,2 rotate in the ideal case with the same peripheral speed and with a predetermined relative Drehwinkelsynchronlage.
  • the pivoting is in the millimeter range. In this case, the meshing of the drive wheels of rubber and pressure cylinder persists. When swinging it is therefore in addition to the displacement of the blanket cylinder 2.G relative to the plate cylinder 1.P to a rolling movement of the drive gear of the blanket cylinder 2.G on the printing cylinder gear to the tooth engagement point, which causes an additional rotation of the blanket cylinder 2.G.
  • This cylinder rotation is detected by the second rotary encoder 6 and then the plate cylinder 1.P synchronously by the drive control of the single drive M also rotated by this angle, so that there is no relative movement at the contact points with the plate cylinder 1.P (rubber pressure plate, bearer rings ) comes.
  • the translation of the axis of rotation of the blanket cylinder 2.G is approximately tangential to the surface of the plate cylinder 1.P added to avoid schleifißbe aggregatendem slip at the contact points between plate and blanket cylinder 1.P, 2.G and Deviations from the given rotational angle relative position must be compensated by an additional rotation of the plate cylinder 1.P with a circumferential rotation corresponding to the translation path.
  • the correction rotation of the plate cylinder 1.P results in a circumferential path which approximates the translation path of a surface point on the blanket cylinder 2.G.
  • the plate cylinder 1.P completes with its correction rotation the translational displacement of the blanket cylinder 2.G, wherein there may be no loss of the rotational angle position assignment of the two cylinders.
  • the support point 8 of the rotary encoder 6 of the blanket cylinder 2.G to be pivoted 2.G is not placed in the rolling point of the bearer rings, as it is ideally considered, but deviates so that when the cylinder 1 moves toward one another, 2 of the following error ⁇ S of the drive control is compensated and the cylinder surfaces in the desired rotational position to each other, ie, each other untwisted meet.
  • the amount of correction during pressing build-up is compensated for by the position of the encoder support point and due to the inertia of the regulator compared to the speed of the pressure adjustment movement, so that the cylinders 1, 2 exactly match each other at the end of the pivotal movement.
  • the to be compensated control related drag error ⁇ S in the rotational angle position of the plate cylinder 1.P causes a lag of the plate cylinder 1.P in the range of 2 to 80 microns and is offset by one advance rotation of the rotary encoder housing to a ⁇ S corresponding correction angle.
  • the lagging of the plate cylinder 1.P compared to the synchronous position (target rotational position) as a result of the control delay is thus compensated with a corrected by the following error .DELTA. ⁇ S rotation angle setpoint, which causes a temporary flow of the plate cylinder 1.P, so that the cylinder surfaces at Swing the blanket cylinder 2.G against the plate cylinder 1.P in synchronizing position.
  • the resulting additionally in the pressure-off movement error is not critical, since it can be easily compensated by the drive controller after the end of the contact of blanket cylinder 2.G and plate cylinder 1.P.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
EP08172069.0A 2007-12-22 2008-12-18 Procédé et agencement de compensation d'asynchronismes d'angles de rotation en fonction du réglage Active EP2072252B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007062628 2007-12-22

Publications (3)

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EP2072252A2 true EP2072252A2 (fr) 2009-06-24
EP2072252A3 EP2072252A3 (fr) 2012-07-04
EP2072252B1 EP2072252B1 (fr) 2018-11-14

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EP (1) EP2072252B1 (fr)
DE (1) DE102008054854A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021112080A1 (de) 2021-05-10 2022-11-10 Koenig & Bauer Ag Verfahren zum Betreiben einer Bogendruckmaschine mit mindestens einem Druckwerk

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022102028A1 (de) 2022-01-28 2023-08-03 Koenig & Bauer Ag Verarbeitungswerk und Verfahren zum Betreiben eines Verarbeitungswerkes einer Verarbeitungsmaschine

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19635796C2 (de) 1996-09-04 1998-07-02 Roland Man Druckmasch Befestigung für einen Drehgeber
DE19720952C2 (de) 1997-05-17 2001-02-01 Roland Man Druckmasch Schwenkbarer, durch einen elektrischen Einzelantrieb angetriebener Zylinder
DE10304495A1 (de) 2003-02-05 2004-08-19 Koenig & Bauer Ag Verfahren und Anordnung für die Synchronisierung eines elektrischen Einzelantriebes
EP1593510A2 (fr) 2004-05-05 2005-11-09 MAN Roland Druckmaschinen AG Indicateur de position pour un cylindre à entrainement direct dans une machine de traitement
DE102005029969A1 (de) 2005-06-28 2007-01-11 Koenig & Bauer Ag Anordnung von Drehwinkelgebern
DE102005029968A1 (de) 2005-06-28 2007-01-11 Koenig & Bauer Ag Anordnung von Drehwinkelgebern

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19623224C1 (de) 1996-06-11 1997-09-11 Roland Man Druckmasch Antrieb für eine Druckmaschine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19635796C2 (de) 1996-09-04 1998-07-02 Roland Man Druckmasch Befestigung für einen Drehgeber
DE19720952C2 (de) 1997-05-17 2001-02-01 Roland Man Druckmasch Schwenkbarer, durch einen elektrischen Einzelantrieb angetriebener Zylinder
DE10304495A1 (de) 2003-02-05 2004-08-19 Koenig & Bauer Ag Verfahren und Anordnung für die Synchronisierung eines elektrischen Einzelantriebes
EP1593510A2 (fr) 2004-05-05 2005-11-09 MAN Roland Druckmaschinen AG Indicateur de position pour un cylindre à entrainement direct dans une machine de traitement
DE102005029969A1 (de) 2005-06-28 2007-01-11 Koenig & Bauer Ag Anordnung von Drehwinkelgebern
DE102005029968A1 (de) 2005-06-28 2007-01-11 Koenig & Bauer Ag Anordnung von Drehwinkelgebern

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021112080A1 (de) 2021-05-10 2022-11-10 Koenig & Bauer Ag Verfahren zum Betreiben einer Bogendruckmaschine mit mindestens einem Druckwerk
DE102021112080B4 (de) 2021-05-10 2024-08-01 Koenig & Bauer Ag Verfahren zum Betreiben einer Bogendruckmaschine mit mindestens einem Druckwerk

Also Published As

Publication number Publication date
EP2072252B1 (fr) 2018-11-14
DE102008054854A1 (de) 2009-06-25
EP2072252A3 (fr) 2012-07-04

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