EP2649000A1 - Procédé et dispositif servant à aligner une feuille devant une machine de traitement de feuilles - Google Patents

Procédé et dispositif servant à aligner une feuille devant une machine de traitement de feuilles

Info

Publication number
EP2649000A1
EP2649000A1 EP11794145.0A EP11794145A EP2649000A1 EP 2649000 A1 EP2649000 A1 EP 2649000A1 EP 11794145 A EP11794145 A EP 11794145A EP 2649000 A1 EP2649000 A1 EP 2649000A1
Authority
EP
European Patent Office
Prior art keywords
sheet
moved
clamping
clamping devices
transport direction
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.)
Withdrawn
Application number
EP11794145.0A
Other languages
German (de)
English (en)
Inventor
Andreas Schilling
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.)
Bielomatik Leuze GmbH and Co KG
Original Assignee
Bielomatik Leuze GmbH and Co KG
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 Bielomatik Leuze GmbH and Co KG filed Critical Bielomatik Leuze GmbH and Co KG
Publication of EP2649000A1 publication Critical patent/EP2649000A1/fr
Withdrawn legal-status Critical Current

Links

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
    • B65H9/00—Registering, e.g. orientating, articles; Devices therefor
    • B65H9/20—Assisting by photoelectric, sonic, or pneumatic indicators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H11/00—Feed tables
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H9/00—Registering, e.g. orientating, articles; Devices therefor
    • B65H9/10—Pusher and like movable registers; Pusher or gripper devices which move articles into registered position
    • B65H9/103—Pusher and like movable registers; Pusher or gripper devices which move articles into registered position acting by friction or suction on the article for pushing or pulling it into registered position, e.g. against a stop
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/20—Location in space
    • B65H2511/23—Coordinates, e.g. three dimensional coordinates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2553/00—Sensing or detecting means
    • B65H2553/40—Sensing or detecting means using optical, e.g. photographic, elements
    • B65H2553/42—Cameras

Definitions

  • the invention relates to a method and apparatus for aligning a sheet in front of a sheet processing machine.
  • the invention is therefore based on the object to provide a method and an apparatus which allows a fast and very accurate alignment of a sheet based on its printed image.
  • the first object is achieved with the features of claim 1.
  • the features of claim 3 solve the second task.
  • the adjustment elements are not connected to each other via a beam, the moving masses are considerably reduced. With controllable drive forces, maximum dynamics can be achieved and the required positioning times can be minimized. This is especially important when the device is used on machines with a continuous sheet transport. In addition, the lower masses lead to a lower susceptibility to vibration. The device can be easily scaled for larger working widths, since no web width and mass-intensive components are included.
  • the two control elements can be individually positioned, the arc between the clamping points can be purposefully tightened by a targeted differential path. Unlike rigidly mounted grippers, the flatness of a sheet can still be improved during the correction process.
  • FIG. 1 shows a cross section through a drawing mark with open clamping elements
  • FIG. 2 shows a cross section with the clamping elements in clamping position
  • FIG. 3 shows a cross section through both drawing marks with a clamped sheet
  • Figures 4 to 10 show a plan view schematically the individual steps of the alignment process
  • Figure 6 the stored in the computer target image and the actual image taken by the camera is shown.
  • the printing sheet 1 is first moved on a leveling table with its leading edge against a series of rigid stops (front marks 3) and thereby braked to a standstill. In this case, gross deviations from the desired position are eliminated, which can occur during transport of a sheet 1 from the stack ( Figure 4). A fine positioning of the sheet 1 by the stops 3 is possible, but not required.
  • the stops 3 for the sheet leading edge are movable from their active position to an inactive position outside the conveying plane, preferably lowered.
  • Each pull-tab 1 2, 13 contains a clamping device 4, 5 for clamping a sheet 1 on one of the two longitudinal edges, which engages in each case in the front region of a sheet 1.
  • the pull marks 12, 13 with the clamping devices 4, 5 can be moved on each sheet longitudinal side by means of drives independently of one another in the transport direction (X direction) and transversely to the transport direction (Y direction).
  • each pull mark 12, 13 contains two drives, of which one drive performs the movement in the X direction, the second drive the movement in the Y direction.
  • each clamping device contains 4.5 an actively controllable press-stamp 6.7, which can be pressed to clamp a sheet edge from above against the support surface of a movable with him tray table 8, 9.
  • the ram 6, 7 is mounted with its associated table 8, 9 in a holder 10, 1 1, wherein the holder 10, 1 1 between the press ram 6, 7 and the table 8, 9 has a slot open on three sides through which the edge of a sheet 1 can be inserted.
  • the drives for the movement in the X and Y directions are each connected to the holder 10, 1 1.
  • the support table 8, 9 partially consists of a presser 2, against which the respective ram 6, 7 is movable.
  • Each ram 6, 7 and the associated Pressteller 2 are freely rotatably mounted in the holder 10, 1 1 about an axis perpendicular to the conveying plane, wherein the two axes of rotation are coaxial, as shown in Figures 1 and 2. Due to the rotatably executed clamping in both drawing devices and the rotational position of the sheet 1 can be performed without changing the flatness.
  • the two drawing marks 12, 13 are constructed in mirror image with respect to one another, with the clamping device 4, 5 each being arranged inside in the region of the edge of a sheet 1.
  • the two pulling devices act as brackets that hold the sheet 1. This prevents a sheet 1 from slipping, even if the stops 3 are not active at the front edge, ie are located outside the transport plane, for example are lowered.
  • a recording is made to determine the actual position at the right and left front regions 14, 15 of the printed image of a sheet 1 by means of a high-resolution camera system.
  • the two preferred receiving areas 14, 15 are shown in phantom in FIG. 5 and FIG.
  • a high-resolution camera is arranged on each of the two longitudinal sides of a sheet 1. Each camera takes a picture of the print image in its area, which is compared with stored desired positions. In FIG. 6, the stored desired positions are punctured, and the actual positions of the print marks actually picked up by the cameras are shown in a thin line.
  • a computer program calculates from the image data the deviation of the print image from the desired position and the required movement of the two draw marks 12, 13 in order to carry out the correction for reaching the desired position of the sheet 1 pending on the position of the print image. It is thus calculated for each of the two pull marks 12, 13, as the correction movement in the X and Y direction must be performed.
  • both pulling marks 12, 13 then each move into the correctly calculated target position, in which the sheet 1 is in the desired position , In this case, each pull mark 12, 13 independently of the other perform a movement in both the X and Y directions.
  • the two pull marks 12, 13 have no mechanical connection with each other. Due to the independent method of the two drawing marks 12, 13, a skew correction of the sheet can be performed.
  • the sheet 1 is aligned so that the print image is aligned exactly for the subsequent machining process.
  • the algorithm for calculating the individual movement profiles of the two pull marks 12, 13 is designed so that the direct distance between the two centers of rotation of the clamps during the positioning process always remains constant.
  • the path calculation algorithm allows a minimal increase in this direct distance during the positioning process in order to tighten a sheet 1 in addition.
  • the rigid stops of the front edge (front marks 3) are lowered from the conveying plane down so that the sheet can be moved beyond the no longer effective stop in the transport direction on.
  • FIGS. 4 to 10 show the alignment process
  • the actual position of the sheet 1 is shown by solid lines.
  • the left-hand pull mark 12 is moved by the amount X3 in the transport direction and by the amount Y3 transversely thereto to the right.
  • the right-hand pull mark 13 is moved by the amount X4 in the transport direction and by the amount Y4 transversely to the right.
  • the sheet 1 is moved and aligned in the dotted-drawn target position.
  • the front marks 3 are lowered downwards (FIG. 7).
  • the travel paths X3, Y3 and X4, Y4 shown in FIG. 8 are not equal to the values X1, Y1 and X2 determined by the cameras Y2.
  • 13 different distortion factors result. These distortion factors are different for each axis direction and are recalculated for each arc 1 by a special control algorithm.
  • the distortion factors a, b, c, d are different and depend on the sheet width, camera position and the starting position of the drawing marks 12, 13.
  • the sheet 1 is gripped by the transport grippers 16 of the processing machine. Subsequently, the clamping of the two pull marks 12, 13 is released, and the sheet 1 is pulled by the transport grippers 16 in the processing machine ( Figure 9).
  • the side draw marks 12, 13 are moved back to their original positions, and the stops for the leading edges (front marks 3) are swung up again as a stop for the next sheet ( Figure 10).
  • the pull marks 12, 13 return the distances X3, Y3 and X4, Y4 in the opposite direction. Subsequently, the next sheet 1 can be fed for alignment.
  • At least one of the two clamping devices 4, 5 so as to be movable relative to the format width of a sheet 1 transversely to the transport direction, that different starting positions can be taken, from which then the alignment movements described above are performed.
  • the drive is used for the movement into the starting position for format adaptation, which performs the alignment movement in the Y direction.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Registering Or Overturning Sheets (AREA)

Abstract

L'invention concerne un procédé servant à aligner une feuille devant une machine de traitement de feuilles, ledit procédé comprenant les étapes suivantes : a) une feuille (1) amenée dans un plan de transport est déplacée pour que son bord avant soit contre une butée (3) puis freinée jusqu'à l'arrêt ; b) la feuille est (1) ensuite serrée par un dispositif de serrage (4, 5) respectivement sur chaque côté longitudinal dans sa partie avant, chacun des deux dispositifs de serrage (4, 5) pouvant se déplacer indépendamment l'un de l'autre et transversalement par rapport au sens de transport au moyen d'au moins un, de préférence de deux mécanismes d'entraînement ; c) une caméra faisant partie intégrante d'un système de caméra effectue ensuite un enregistrement pour la détermination d'une position effective respectivement au niveau de la partie avant droite et gauche de la feuille (1) ; d) les informations d'image du système de caméra sont ensuite comparées à des valeurs prescrites mises en mémoire, et on calcule le mouvement de correction nécessaire pour atteindre la position prescrite de la feuille (1) ; e) la butée (3) est ensuite déplacée au niveau du bord avant de la feuille hors du plan de transport et le mouvement de correction calculé est exécuté en déplaçant les deux dispositifs de serrage (4, 5) indépendamment l'un de l'autre et transversalement par rapport à la direction de transport.
EP11794145.0A 2010-12-08 2011-12-08 Procédé et dispositif servant à aligner une feuille devant une machine de traitement de feuilles Withdrawn EP2649000A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010053769 2010-12-08
PCT/EP2011/072252 WO2012076671A1 (fr) 2010-12-08 2011-12-08 Procédé et dispositif servant à aligner une feuille devant une machine de traitement de feuilles

Publications (1)

Publication Number Publication Date
EP2649000A1 true EP2649000A1 (fr) 2013-10-16

Family

ID=45315798

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11794145.0A Withdrawn EP2649000A1 (fr) 2010-12-08 2011-12-08 Procédé et dispositif servant à aligner une feuille devant une machine de traitement de feuilles

Country Status (2)

Country Link
EP (1) EP2649000A1 (fr)
WO (1) WO2012076671A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3386767A4 (fr) 2015-12-09 2019-07-31 Hewlett-Packard Development Company, L.P. Repérage de supports d'impression au moyen d'une pince d'extraction
DE102017207706B4 (de) 2017-05-08 2019-03-28 Koenig & Bauer Ag Vorrichtung zur Überwachung des Bogenlaufs entlang einer Transportbahn
DE102018130149B4 (de) 2018-11-28 2020-08-27 Koenig & Bauer Ag Anlage für eine tafelförmiges Substrat verarbeitende Maschine und Verfahren zum Betreiben einer Anlage
DE102020127154B4 (de) 2020-10-15 2022-12-29 Koenig & Bauer Ag Bogenbearbeitungsmaschine mit zumindest einer Sensoreinrichtung und Verfahren zur Steuerung und/oder Regelung zumindest eines Bestandteils einer Bogenbearbeitungsmaschine
WO2022078818A1 (fr) 2020-10-15 2022-04-21 Koenig & Bauer Ag Bande de commande d'impression, substrat et procédé de commande en boucle ouverte et/ou en boucle fermée d'au moins un composant d'une machine de traitement

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1023940B (de) 1953-08-22 1958-02-06 Graubremse Gmbh Schaltventil fuer mit einem Druckmittel betaetigte Vorrichtungen
DE2641848A1 (de) * 1976-09-17 1978-03-30 Gao Ges Automation Org Verfahren und vorrichtung zum positionieren von bogen fuer druckmaschinen o.dgl.
CH676695A5 (fr) * 1988-05-19 1991-02-28 Bobst Sa
CH693378A5 (fr) 1999-04-09 2003-07-15 Bobst Sa Procédé de positionnement d'éléments en plaque dans la station d'introduction d'une machine de traitement et dispositif pour la mise en oeuvre du procédé.
DE10154036A1 (de) * 2001-11-02 2003-05-15 Koenig & Bauer Ag Einrichtung zum Erfassen der Position einer Seitenkante
DE102006057506A1 (de) 2005-12-23 2007-07-05 Heidelberger Druckmaschinen Ag Verfahren zur Korrektur der Seitenposition eines Bedruckstoffes

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2012076671A1 *

Also Published As

Publication number Publication date
WO2012076671A1 (fr) 2012-06-14

Similar Documents

Publication Publication Date Title
EP2059468B1 (fr) Dispositif d'alignement
EP2407402B1 (fr) Procédé et dispositif destinés à positionner des feuilles
DE102010033749B4 (de) Vorrichtung zur Bearbeitung von Werkstücken
DE19814141A1 (de) Verfahren und Vorrichtung zum positionsgenauen Zuführen von flächenförmigen Gütern zu einem Bearbeitungsprozeß
DE102007020496A1 (de) Bogenstanz- und -prägemaschine
EP2649000A1 (fr) Procédé et dispositif servant à aligner une feuille devant une machine de traitement de feuilles
EP3414105A1 (fr) Dispositif et procédé d'usinage d'un substrat
EP3426420B1 (fr) Procédé et dispositif permettant d'amener une feuille de tôle à une presse de découpage
DE102011114707A1 (de) Verfahren zum Fördern eines flachen Gegenstandes und Vorrichtung zur Durchführung des Verfahrens
EP2029360B2 (fr) Procédé et dispositif de fabrication de films composites
DE102021100214B4 (de) Vorrichtung und Verfahren zur Handhabung von plattenförmigen Teilen
EP1543963B1 (fr) Procédé et dispositif pour corriger la déviation de la position d'un produit à imprimer
DE102007031848A1 (de) Bogenstanz- und -prägemaschine und Verfahren zur Bogenausrichtung
DE10033490B4 (de) Einrichtung zum seitlichen Ausrichten von Bogen
EP0178399A2 (fr) Procédé de repérage et d'alimentation en feuilles dans les machines d'impression
DE10216758A1 (de) Verfahren zum Ausrichten von Bogen nach der Seitenkante
EP3426583B1 (fr) Dispositif de transport correctif linéaire de supports de bande
AT522859A1 (de) Übergabeverfahren, dafür ausgebildetes Manipulationssystem sowie Biegeanlage
DE102013001778A1 (de) Überwachungsverfahren zur Kollisionsvermeidung einer Stanzmaschine mit Bremsbürste
DE102022121537A1 (de) Vorrichtung und Verfahren zum Unterteilen eines Stapels von Blättern in Riese vorgegebener Blattzahl
EP1537995B1 (fr) Méthode pour l'alignement latéral de feuilles
DE10061702A1 (de) Verfahren und Vorrichtung zum Ausrichten von gestapelten Bogen im Anleger einer Bogen verarbeitenden Maschine
EP4434927B1 (fr) Procédé de surveillance d'un processus de pliage dans une plieuse à poches
EP3702157B1 (fr) Procédé et dispositif de placement exact de feuilles
DE10256236A1 (de) Druckformladevorrichtung

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20130523

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20140730

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: BIELOMATIK LEUZE GMBH + CO. KG

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20141210