EP1588965A1 - Method of position control for a sheet passing through a folding machine - Google Patents

Method of position control for a sheet passing through a folding machine Download PDF

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Publication number
EP1588965A1
EP1588965A1 EP04009558A EP04009558A EP1588965A1 EP 1588965 A1 EP1588965 A1 EP 1588965A1 EP 04009558 A EP04009558 A EP 04009558A EP 04009558 A EP04009558 A EP 04009558A EP 1588965 A1 EP1588965 A1 EP 1588965A1
Authority
EP
European Patent Office
Prior art keywords
sheet
curve
folding machine
processor device
folding
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
EP04009558A
Other languages
German (de)
French (fr)
Other versions
EP1588965B1 (en
Inventor
Klaus Stocklossa
Eberhard Krieger
Georg Dannemann
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.)
MBO Postpress Solutions GmbH
Original Assignee
Maschinenbau Oppenweiler Binder 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 Maschinenbau Oppenweiler Binder GmbH and Co KG filed Critical Maschinenbau Oppenweiler Binder GmbH and Co KG
Priority to DE502004004356T priority Critical patent/DE502004004356D1/en
Priority to EP04009558A priority patent/EP1588965B1/en
Priority to US11/110,692 priority patent/US20050239621A1/en
Priority to CN2005100676161A priority patent/CN1689949B/en
Publication of EP1588965A1 publication Critical patent/EP1588965A1/en
Application granted granted Critical
Publication of EP1588965B1 publication Critical patent/EP1588965B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H45/00Folding thin material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H45/00Folding thin material
    • B65H45/12Folding articles or webs with application of pressure to define or form crease lines
    • B65H45/14Buckling folders
    • B65H45/142Pocket-type folders
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/20Location in space
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/50Occurence
    • B65H2511/52Defective operating conditions
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2557/00Means for control not provided for in groups B65H2551/00 - B65H2555/00
    • B65H2557/20Calculating means; Controlling methods
    • B65H2557/23Recording or storing data
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2557/00Means for control not provided for in groups B65H2551/00 - B65H2555/00
    • B65H2557/20Calculating means; Controlling methods
    • B65H2557/24Calculating methods; Mathematic models
    • B65H2557/242Calculating methods; Mathematic models involving a particular data profile or curve

Definitions

  • the invention relates to a method for controlling the position of a folding machine transported bow.
  • a sheet In a folding unit of a folding machine, a sheet should be folded so that after the folding process all the edges of the sheet congruent superimposed. requirement this is that the sheet was cut absolutely right-angled, the Arc is inserted at right angles to the longitudinal axes of the folding rollers and the folding rollers have the same tensile force over their working width.
  • the folding pocket When folding in a folding pocket, it is necessary that the folding pocket is not inclined to the sheet transport direction is placed and their clearance between the pocket bars optimal is selected.
  • the sheet stop in the folder pocket must be at right angles be set to the transport direction.
  • a change in the folding result will only be made by a folding machine operator then recognized when the quality of the finished folded sheet is continuously checked. The operator then has to recognize by means of the folded product, at which point the folding machine a correction must be made so that the folding quality is optimal again. This is very elaborate and requires a very large experience of the operator.
  • the invention is based on the object with structurally simple means a method for controlling the position of a sheet transported in a folding machine which allows an operator to be the source of error in the folding of a Quickly recognize bow and take the appropriate measures to correct.
  • the operator of the folding machine by the error signal of the processor device on the misalignment of the sheet made aware.
  • the operator immediately recognizes where in a folding machine the error first occurred. He can then take the appropriate action take to fix the misplacement of the bow.
  • the processor device can issue a command to stop the folding machine.
  • the detection device is in a preferred embodiment of a Light curtain made an electric depending on the cover by the bow Sends signal as a measured value to the processor device.
  • a Light curtain is, for example, the photo sensor with analog output FAV30-01 of SensoPart.
  • the electrical signal may be a voltage value, e.g. from 0 to 10V, a Current value, e.g. from 0 to 20mA, a serial data interface a parallel Interface or the like.
  • the capture and evaluation can also be done via an image processing system done with camera, processor device and appropriate software.
  • the reference curve is preferably determined by running a calibration sheet, the folded optimally after passing through the folding machine.
  • the folding machine shown in Fig. 1 comprises a first folding unit 23 with two folding rollers 24, 26 and a first folding unit 23 downstream second folding unit 29th with folding rollers 28, 30 on.
  • the first folding unit 23 is a first inclined roller table 16 upstream, which has in a known manner an alignment ruler 20, located in Transport direction TR1 of the sheet 36 extends. Ideally, the bow will be 36 brought by the first inclined roller table 16 to bear against the alignment ruler 20 and then guided in the transport direction TR1 between the folding rollers 24, 26 and folded by these.
  • the transport direction TR2 perpendicular to the transport direction TR1 of the first inclined roller table 16 runs. Due to the oblique rollers of the sheet 39 is for concern to a Alignment ruler 22 brought and then between the folding rollers 28, 30 of the second Folder 29 guided and folded again.
  • a light curtain 32 arranged as a detection device, whose longitudinal direction in the right Angle to the longitudinal direction of the alignment ruler 20 extends.
  • the sheet 36 should already be on the alignment ruler 20 abuts, then in the transport direction TR1 between the folding rollers 24, 26 to be introduced.
  • the light curtain 32 is arranged to overlie the alignment ruler 20 away curved edge 37 extends in the direction of the alignment ruler 20, to capture the sheet edge 37 can.
  • the light curtain 32 gives a reading to a processor device (not shown).
  • the light curtain is for example a photosensor with analog output FAV30-01 from the company SensoPart. This Photosensor is dependent on the cover through the sheet 37 a voltage from 0 to 10V to the processor device on.
  • a similar light curtain 34 is arranged in front of the second folding unit 29.
  • Fig. 2 shows schematically a folding pocket 40 having a plurality of pockets forming a pocket Pocket bars 42 and the way one of the folding pocket 48 incoming Bow limiting stop 44. Shortly after the pocket inlet is parallel arranged to the stop 44 in light curtain 46, which extends beyond the in Fig. 2 extends right edge 49 of an arc addition. As indicated by the double arrow TR is indicated, the sheet 48 is inserted until it hits the stop 44. Subsequently, the sheet 48 is again conveyed out of the folding pocket 40 addition.
  • Fig. 3 shows a U (voltage) -S (path) reference curve RK of a Calibration sheet, which is determined by the processor device based on the measured values which was detected by the light scanner 32 during the passage of a calibration sheet.
  • the voltage U is from the light curtain to the processor device passed.
  • the path S is via a rotary encoder at the corresponding Folder determined.
  • This rotary encoder is with the sheet transport system firmly connected.
  • Each pulse on the rotary encoder corresponds to one certain way of the sheet transport system. From the number of pulses Therefore, the processor device can the Bogenweg S and thus the U-S curve determine.
  • FIG. 4 shows a measurement curve MK1 of an obliquely in the region of the light curtain 32 continuous arc 36 shown.
  • the measurement curve MK1 shows that the arc edge 37 at the inlet through the light curtain 32 closer to the alignment ruler 20th is located as the sheet edge 37 of the calibration sheet.
  • At the end of the run of the bow 36 corresponds to the distance of the sheet edge 37 substantially the distance the bow edge of the calibration bow.
  • the measured curve MK2 shown in FIG. 5 shows that the sheet running direction of the sheet 36 is parallel to the sheet running direction of the calibration sheet. However, covers the arc 36 continues the light curtain 32, as the calibration sheet, so that of the Light curtain 32, a higher voltage is delivered.
  • the measurement curve MK2 corresponding arc 36 is thus at a distance from the alignment ruler 20th
  • FIG. 6 shows a measurement curve MK3 of a sheet 36 which is exactly along the alignment ruler 20 is transported and whose width corresponds to the width of the calibration sheet. However, the leading edge of the incoming sheet 36 runs later in time in the light curtain 32 as that of the calibration sheet.
  • a measurement curve MK1, MK2 or MK3 determined by the processor device If it is, it outputs an error signal indicating that the sheet 36 does not correspond to the Eichbogen is transported accordingly. After output of the error signal can then taking into account the differences of the measured curves MK1, MK2 and MK3 to the reference curve RK by an operator or possibly automatically the appropriate measures are taken.
  • the second embodiment of the folding machine 50 shown in FIG. 7 differs extending from the folding machine shown in Fig. 1 in that the folding roller pairs 23, 29 each a pair of knife shafts 52 and 54 is arranged downstream, through the perforations or creasing in a folded by the Falzwalzencrue 23, 29 bow be formed, which weaken the sheets along a fold line.
  • Correcting slate perforation lines is usually done by pulling one the pair of knife shafts 52 arranged in the folding unit 12 curved switch (not shown) performed on the leading page. Pulling becomes a path extension enforced when passing through the curved switch and thus the lead compensated.
  • the use of the light curtain 58 behind the pair of knife shafts 52 allows monitoring of the directional stability of the expiring arc side edge 62 and thus the perforation line generated in the pair of knife shafts 52.
  • Any deviation of a determined measuring curve from a reference curve can be the Operators are signaled by an error signal of the processor device, so that the corresponding bow diverter can be pulled.

Landscapes

  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

The method for the position monitoring of a sheet (36) transported in a folding machine entails determining by a sensing device (32,34,36) the positions of a sheet edge (39) extending in the transporting direction (TR) and transmitting the measured values to a processor unit which calculates a measurement curve on the basis of the recorded value and path of the sheet through the sensing point. The measurement curve is compared with a reference curve and an error signal is sent out by the processor unit if there is any deviation between the curves.

Description

Die Erfindung betrifft ein Verfahren zur Lagekontrolle eines in einer Falzmaschine transportierten Bogens.The invention relates to a method for controlling the position of a folding machine transported bow.

In einem Falzwerk einer Falzmaschine soll ein Bogen so gefalzt werden, dass nach dem Falzvorgang alle Kanten des Bogens deckungsgleich übereinanderliegen. Voraussetzung hierfür ist, dass der Bogen absolut rechtswinklig geschnitten wurde, der Bogen im rechten Winkel zu den Längsachsen der Falzwalzen eingeführt wird und die Falzwalzen über ihre Arbeitsbreite die gleiche Zugkraft aufweisen. Beim Falzen in einer Falztasche ist es erforderlich, dass die Falztasche nicht schräg zur Bogentransportrichtung gestellt ist und ihre lichte Weite zwischen den Taschenstäben optimal gewählt ist. Außerdem muss der Bogenanschlag in der Falztasche rechtwinklig zur Transportrichtung eingestellt sein.In a folding unit of a folding machine, a sheet should be folded so that after the folding process all the edges of the sheet congruent superimposed. requirement this is that the sheet was cut absolutely right-angled, the Arc is inserted at right angles to the longitudinal axes of the folding rollers and the folding rollers have the same tensile force over their working width. When folding in a folding pocket, it is necessary that the folding pocket is not inclined to the sheet transport direction is placed and their clearance between the pocket bars optimal is selected. In addition, the sheet stop in the folder pocket must be at right angles be set to the transport direction.

Um mögliche Fehler zu korrigieren, sind an den entsprechenden Stellen der Falzmaschine Verstelleinrichtungen vorgesehen.To correct possible errors, are in the appropriate places of the folding machine Adjustment provided.

In der Regel werden nicht alle Falzbogen eines Auftrages mit einem Schnitt auf einer Schneidemaschine geschnitten. Es kann deshalb beim Schneiden eines Auftrages vorkommen, dass sich die Rechtwinkligkeit der Bogen und somit das Falzergebnis ändert. Außerdem kann eine mechanische Verstelleinrichtung beispielsweise bei Lockerung ihrer Klemmung an der Falzmaschine unbemerkt ihre Lage verändern. Außerdem ist die Position eines Falzes in einer Falztasche abhängig von der Geschwindigkeit. Wenn die Geschwindigkeit während der laufenden Produktion geändert wird, ändert sich abhängig von dem Geschwindigkeitsunterschied, dem Bogenformat, der Falzlänge in der Falztasche und der Eigenschaft des Papiers die Lage des Falzes. As a rule, not all folded sheets of an order with a cut on one Cutting machine cut. It can therefore when cutting a job Occur that the perpendicularity of the bow and thus the folding result changes. In addition, a mechanical adjusting device, for example unnoticed change their position when loosening their clamping on the folding machine. In addition, the position of a fold in a folding pocket is dependent on the Speed. If the speed during ongoing production changes, depending on the speed difference, the Sheet size, the fold length in the folder pocket and the property of the paper Location of the fold.

Eine Änderung des Falzergebnisses wird von einem Bediener der Falzmaschine nur dann erkannt, wenn die Qualität des fertig gefalzten Bogens laufend kontrolliert wird. Der Bediener muss dann anhand des Falzproduktes erkennen, an welcher Stelle der Falzmaschine eine Korrektur vorgenommen werden muss, damit die Falzqualität wieder optimal ist. Dies ist sehr aufwendig und erfordert eine sehr große Erfahrung des Bedieners.A change in the folding result will only be made by a folding machine operator then recognized when the quality of the finished folded sheet is continuously checked. The operator then has to recognize by means of the folded product, at which point the folding machine a correction must be made so that the folding quality is optimal again. This is very elaborate and requires a very large experience of the operator.

Der Erfindung liegt die Aufgabe zugrunde, mit konstruktiv einfachen Mitteln ein Verfahren zur Lagekontrolle eines in einer Falzmaschine transportierten Bogens zu schaffen, das es einem Bediener ermöglicht, die Fehlerquelle bei der Falzung eines Bogens schnell zu erkennen und die geeigneten Maßnahmen zur Korrektur vorzunehmen.The invention is based on the object with structurally simple means a method for controlling the position of a sheet transported in a folding machine which allows an operator to be the source of error in the folding of a Quickly recognize bow and take the appropriate measures to correct.

Diese Aufgabe wird erfindungsgemäß durch ein Verfahren mit den Merkmalen des Patentanspruchs 1 gelöst. Vorteilhafte Durchführungsformen des erfindungsgemäßen Verfahrens sind Gegenstand der Patentansprüche 2 bis 6.This object is achieved by a method with the features of Patent claim 1 solved. Advantageous embodiments of the invention Process are the subject of claims 2 to 6.

Sobald die beim Durchlauf eines Bogens ermittelte Messkurve von der Referenzkurve über ein vorher bestimmtes Maß abweicht, wird der Bediener der Falzmaschine durch das Fehlersignal der Prozessoreinrichtung auf die Fehllage des Bogens aufmerksam gemacht. Der Bediener erkennt sofort, an welcher Stelle in einer Falzmaschine der Fehler zuerst aufgetreten ist. Er kann dann die geeigneten Maßnahmen ergreifen, um die Fehllage des Bogens zu beheben.As soon as the measured curve determined by the passage of an arc is off the reference curve beyond a predetermined amount, the operator of the folding machine by the error signal of the processor device on the misalignment of the sheet made aware. The operator immediately recognizes where in a folding machine the error first occurred. He can then take the appropriate action take to fix the misplacement of the bow.

Bei geringer Abweichung der Messkurve von der Referenzkurve kann die Korrektur während des Betriebes durch den Bediener durchgeführt werden.If the trace deviates slightly from the reference curve, the correction can be made during operation by the operator.

Wenn die Abweichungen der Messkurve von der Referenzkurve jedoch zu groß sind, kann die Prozessoreinrichtung nach Ausgabe des Fehlersignals einen Befehl zum Anhalten der Falzmaschine geben.However, if the deviations of the trace from the reference curve are too large After the error signal has been issued, the processor device can issue a command to stop the folding machine.

Ein Eingreifen eines Bedieners wäre dann nicht möglich, wenn nach Ausgabe des Fehlersignals die für die Abweichung verantwortlichen Antriebe der Falzmaschine Automatisch von der Prozessoreinrichtung so angesteuert werden, dass bei nachfolgenden Bogen die Messkurve und die Referenzkurve übereinstimmen.An intervention of an operator would not be possible if after the release of the Error signal the drives responsible for the deviation of the folding machine Automatically controlled by the processor device so that in subsequent Arc the waveform and the reference curve match.

Die Erfassungseinrichtung wird bei einer bevorzugten Ausführungsform von einem Lichtvorhang gebildet, der abhängig von der Abdeckung durch den Bogen ein elektrisches Signal als Messwert an die Prozessoreinrichtung weitergibt. Ein solcher Lichtvorhang ist beispielsweise der Photosensor mit Analogausgang FAV30-01 von SensoPart. Das elektrische Signal kann ein Spannungswert, z.B. von 0 bis 10V, ein Stromwert, z.B. von 0 bis 20mA, eine serielle Datenschnittstelle eine parallele Schnittstelle oder dergleichen sein.The detection device is in a preferred embodiment of a Light curtain made an electric depending on the cover by the bow Sends signal as a measured value to the processor device. Such a Light curtain is, for example, the photo sensor with analog output FAV30-01 of SensoPart. The electrical signal may be a voltage value, e.g. from 0 to 10V, a Current value, e.g. from 0 to 20mA, a serial data interface a parallel Interface or the like.

Die Erfassung und Auswertung kann aber auch über ein Bildverarbeitungssystem mit Kamera, Prozessoreinrichtung und geeigneter Software erfolgen.The capture and evaluation can also be done via an image processing system done with camera, processor device and appropriate software.

Die Referenzkurve wird vorzugsweise bei Durchlauf eines Eichbogens ermittelt, der nach Durchlauf durch die Falzmaschine optimal gefalzt ist.The reference curve is preferably determined by running a calibration sheet, the folded optimally after passing through the folding machine.

Ausführungsbeispiele der Erfindung werden nachstehend anhand von Zeichnungen näher erläutert. Es zeigen:

Fig. 1
schematisch eine Draufsicht auf eine erste Ausführungsform einer Falzmaschine mit zwei Falzwerken,
Fig. 2
schematisch ein Taschenfalzwerk,
Fig. 3
eine U-S-Referenzkurve eines Eichbogens,
Fig. 4
eine erste Messkurve im Vergleich zur Referenzkurve,
Fig. 5
eine zweite Messkurve im Vergleich zur Referenzkurve,
Fig. 6
eine dritte Messkurve im Vergleich zur Referenzkurve,
Fig. 7
schematisch eine Draufsicht auf eine zweite Ausführungsform einer Falzmaschine mit zwei Falzwerken
Embodiments of the invention are explained below with reference to drawings. Show it:
Fig. 1
1 is a schematic plan view of a first embodiment of a folding machine with two folding units;
Fig. 2
schematically a pocket folder,
Fig. 3
a US reference curve of a calibration sheet,
Fig. 4
a first measured curve compared to the reference curve,
Fig. 5
a second trace compared to the reference curve,
Fig. 6
a third trace compared to the reference curve,
Fig. 7
schematically a plan view of a second embodiment of a folding machine with two folders

Die in Fig. 1 gezeigte Falzmaschine weist ein erstes Falzwerk 23 mit zwei Falzwalzen 24, 26 und ein dem ersten Falzwerk 23 nachgeschaltetes zweites Falzwerk 29 mit Falzwalzen 28, 30 auf. Dem ersten Falzwerk 23 ist ein erster Schrägrollentisch 16 vorgeordnet, der auf bekannte Weise ein Ausrichtelineal 20 aufweist, das sich in Transportrichtung TR1 des Bogens 36 erstreckt. Im Idealfall wird der Bogen 36 durch den ersten Schrägrollentisch 16 zur Anlage an das Ausrichtelineal 20 gebracht und dann in Transportrichtung TR1 zwischen die Falzwalzen 24, 26 geführt und von diesen gefalzt. Nach dem Durchlauf durch die Falzwalzen 24, 26 wird der gefalzte Bogen 39 auf einen zweiten Schrägrollentisch 18 befördert, dessen Transportrichtung TR2 senkrecht zur Transportrichtung TR1 des ersten Schrägrollentisches 16 verläuft. Durch die Schrägrollen wird der Bogen 39 zum Anliegen an ein Ausrichtelineal 22 gebracht und dann zwischen die Falzwalzen 28, 30 des zweiten Falzwerkes 29 geführt und noch einmal gefalzt.The folding machine shown in Fig. 1 comprises a first folding unit 23 with two folding rollers 24, 26 and a first folding unit 23 downstream second folding unit 29th with folding rollers 28, 30 on. The first folding unit 23 is a first inclined roller table 16 upstream, which has in a known manner an alignment ruler 20, located in Transport direction TR1 of the sheet 36 extends. Ideally, the bow will be 36 brought by the first inclined roller table 16 to bear against the alignment ruler 20 and then guided in the transport direction TR1 between the folding rollers 24, 26 and folded by these. After passing through the folding rollers 24, 26 of the folded sheet 39 is conveyed to a second inclined roller table 18, the transport direction TR2 perpendicular to the transport direction TR1 of the first inclined roller table 16 runs. Due to the oblique rollers of the sheet 39 is for concern to a Alignment ruler 22 brought and then between the folding rollers 28, 30 of the second Folder 29 guided and folded again.

Unmittelbar vor den Falzwalzen 24, 26 des ersten Falzwerkes 23 ist ein Lichtvorhang 32 als Erfassungseinrichtung angeordnet, dessen Längsrichtung im rechten Winkel zur Längsrichtung des Ausrichtelineals 20 verläuft. In dem Bereich, in dem der Lichtvorhang 32 angeordnet ist, sollte der Bogen 36 bereits an dem Ausrichtelineal 20 anliegen, um dann in Transportrichtung TR1 zwischen die Falzwalzen 24, 26 eingeführt zu werden.Immediately before the folding rollers 24, 26 of the first folding unit 23 is a light curtain 32 arranged as a detection device, whose longitudinal direction in the right Angle to the longitudinal direction of the alignment ruler 20 extends. In the area in which the light curtain 32 is located, the sheet 36 should already be on the alignment ruler 20 abuts, then in the transport direction TR1 between the folding rollers 24, 26 to be introduced.

Der Lichtvorhang 32 ist so angeordnet, dass er sich über die von dem Ausrichtelineal 20 abgewandte Bogenkante 37 hinaus in Richtung des Ausrichtelineals 20 erstreckt, um die Bogenkante 37 erfassen zu können. Abhängig von der Abdeckung des Lichtvorhangs 32 durch den Bogen 36 gibt der Lichtvorhang 32 einen Messwert an eine Prozessoreinrichtung (nicht gezeigt) weiter. Der Lichtvorhang ist beispielsweise ein Photosensor mit Analogausgang FAV30-01 der Firma SensoPart. Dieser Photosensor gibt abhängig von der Abdeckung durch den Bogen 37 eine Spannung von 0 bis 10V an die Prozessoreinrichtung weiter.The light curtain 32 is arranged to overlie the alignment ruler 20 away curved edge 37 extends in the direction of the alignment ruler 20, to capture the sheet edge 37 can. Depending on the cover of the light curtain 32 through the arc 36, the light curtain 32 gives a reading to a processor device (not shown). The light curtain is for example a photosensor with analog output FAV30-01 from the company SensoPart. This Photosensor is dependent on the cover through the sheet 37 a voltage from 0 to 10V to the processor device on.

Ein ähnlicher Lichtvorhang 34 ist vor dem zweiten Falzwerk 29 angeordnet.A similar light curtain 34 is arranged in front of the second folding unit 29.

Fig. 2 zeigt schematisch eine Falztasche 40 mit mehreren einen Taschenspalt bildenden Taschenstäben 42 und einem den Weg eines in die Falztasche 48 einlaufenden Bogens begrenzenden Anschlag 44. Kurz nach dem Tascheneinlauf ist parallel zu dem Anschlag 44 in Lichtvorhang 46 angeordnet, der sich über die in Fig. 2 rechte Kante 49 eines Bogens hinaus erstreckt. Wie es durch den Doppelpfeil TR angedeutet ist, wird der Bogen 48 eingeführt, bis er auf den Anschlag 44 auftrifft. Anschließend wird der Bogen 48 wieder aus der Falztasche 40 hinaus befördert.Fig. 2 shows schematically a folding pocket 40 having a plurality of pockets forming a pocket Pocket bars 42 and the way one of the folding pocket 48 incoming Bow limiting stop 44. Shortly after the pocket inlet is parallel arranged to the stop 44 in light curtain 46, which extends beyond the in Fig. 2 extends right edge 49 of an arc addition. As indicated by the double arrow TR is indicated, the sheet 48 is inserted until it hits the stop 44. Subsequently, the sheet 48 is again conveyed out of the folding pocket 40 addition.

Fig. 3 zeigt beispielsweise eine U(Spannungs)-S(Weg)-Referenzkurve RK eines Eichbogens, die durch die Prozessoreinrichtung anhand der Messwerte ermittelt wird, die von dem Lichttaster 32 beim Durchlauf eines Eichbogens ermittelt wurde.For example, Fig. 3 shows a U (voltage) -S (path) reference curve RK of a Calibration sheet, which is determined by the processor device based on the measured values which was detected by the light scanner 32 during the passage of a calibration sheet.

Es handelt sich um eine optimale U-S-Kurve, die zu einer exakten Falzung des Eichbogens führt. Die Spannung U wird von dem Lichtvorhang an die Prozessoreinrichtung weitergegeben. Der Weg S wird über einen Drehimpulsgeber an dem entsprechenden Falzwerk ermittelt. Dieser Drehimpulsgeber ist mit dem Bogentransportsystem fest verbunden. Jeder Impuls an dem Drehimpulsgeber entspricht einem bestimmtem Weg des Bogentransportsystems. Aus der Anzahl der Impulse kann die Prozessoreinrichtung daher den Bogenweg S und somit die U-S-Kurve bestimmen.It is an optimal U-S curve that results in an exact fold of the Eichbogen leads. The voltage U is from the light curtain to the processor device passed. The path S is via a rotary encoder at the corresponding Folder determined. This rotary encoder is with the sheet transport system firmly connected. Each pulse on the rotary encoder corresponds to one certain way of the sheet transport system. From the number of pulses Therefore, the processor device can the Bogenweg S and thus the U-S curve determine.

In Fig. 4 ist eine Messkurve MK1 eines schräg im Bereich des Lichtvorhangs 32 durchlaufenden Bogens 36 gezeigt. Die Messkurve MK1 zeigt, das sich die Bogenkante 37 bei Einlauf durch den Lichtvorhang 32 näher zu dem Ausrichtelineal 20 befindet als die Bogenkante 37 des Eichbogens. Am Ende des Durchlaufs des Bogens 36 entspricht der Abstand der Bogenkante 37 im Wesentlichen dem Abstand der Bogenkante des Eichbogens.FIG. 4 shows a measurement curve MK1 of an obliquely in the region of the light curtain 32 continuous arc 36 shown. The measurement curve MK1 shows that the arc edge 37 at the inlet through the light curtain 32 closer to the alignment ruler 20th is located as the sheet edge 37 of the calibration sheet. At the end of the run of the bow 36 corresponds to the distance of the sheet edge 37 substantially the distance the bow edge of the calibration bow.

Die in Fig. 5 gezeigte Messkurve MK2 lässt erkennen, dass die Bogenlaufrichtung des Bogens 36 parallel zur Bogenlaufrichtung des Eichbogens ist. Allerdings deckt der Bogen 36 den Lichtvorhang 32 weiter ab, als der Eichbogen, so dass von dem Lichtvorhang 32 eine höhere Spannung abgegeben wird. Der der Messkurve MK2 entsprechende Bogen 36 befindet sich somit im Abstand zu dem Ausrichtelineal 20. The measured curve MK2 shown in FIG. 5 shows that the sheet running direction of the sheet 36 is parallel to the sheet running direction of the calibration sheet. However, covers the arc 36 continues the light curtain 32, as the calibration sheet, so that of the Light curtain 32, a higher voltage is delivered. The measurement curve MK2 corresponding arc 36 is thus at a distance from the alignment ruler 20th

Fig. 6 zeigt eine Messkurve MK3 eines Bogens 36, der exakt entlang des Ausrichtelineals 20 transportiert wird und dessen Breite der Breite des Eichbogens entspricht. Allerdings läuft die voreilende Bogenkante des einlaufenden Bogens 36 zeitlich später in den Lichtvorhang 32 ein als diejenige des Eichbogens.FIG. 6 shows a measurement curve MK3 of a sheet 36 which is exactly along the alignment ruler 20 is transported and whose width corresponds to the width of the calibration sheet. However, the leading edge of the incoming sheet 36 runs later in time in the light curtain 32 as that of the calibration sheet.

Wenn von der Prozessoreinrichtung eine Messkurve MK1, MK2 oder MK3 ermittelt wird, gibt sie ein Fehlersignal heraus, das anzeigt, dass der Bogen 36 nicht dem Eichbogen entsprechend transportiert wird. Nach Ausgabe des Fehlersignals können dann unter Berücksichtigung der Unterschiede der Messkurven MK1, MK2 und MK3 zur Referenzkurve RK von einer Bedienungsperson oder ggf. automatisch die geeigneten Maßnahmen getroffen werden.If a measurement curve MK1, MK2 or MK3 determined by the processor device If it is, it outputs an error signal indicating that the sheet 36 does not correspond to the Eichbogen is transported accordingly. After output of the error signal can then taking into account the differences of the measured curves MK1, MK2 and MK3 to the reference curve RK by an operator or possibly automatically the appropriate measures are taken.

Die in Fig. 7 gezeigte zweite Ausführungsform der Falzmaschine 50 unterscheidet sich von der in Fig. 1 gezeigten Falzmaschine dadurch, dass den Falzwalzenpaaren 23, 29 jeweils ein Messerwellenpaar 52 bzw. 54 nachgeordnet ist, durch das Perforationen oder Rillungen in einem durch die Falzwalzenpaare 23, 29 gefalzten Bogen ausgebildet werden, die die Bogen entlang einer Falzlinie schwächen.The second embodiment of the folding machine 50 shown in FIG. 7 differs extending from the folding machine shown in Fig. 1 in that the folding roller pairs 23, 29 each a pair of knife shafts 52 and 54 is arranged downstream, through the perforations or creasing in a folded by the Falzwalzenpaare 23, 29 bow be formed, which weaken the sheets along a fold line.

In Bogentransportrichtung TR gesehen ist nach dem Messerwalzenpaar 52 des ersten Falzwerks 12 ein weiterer Lichtvorhang 58 so vorgesehen, dass er die Bogenseitenkante 62 eines aus dem ersten Falzwerk 12 auslaufenden Bogens 60 erfasst, der durch das Falzwalzenpaar 23 gefalzt und durch das Messerwellenpaar 52 perforiert wurde. Da die Bogenseitenkante 62 stets parallel zu durch das Messerwellenpaar 52 ausgebildete Perforations- oder Rilllinien verläuft, kann durch den Lichtvorhang 58 auf die anhand der Fig. 3 bis 6 beschriebene Weise erfasst werden, ob die Perforations- oder Rilllinien exakt verlaufen.In the sheet transport direction TR is seen after the pair of knife rollers 52 of the first Folder 12 another light curtain 58 is provided so that it the sheet side edge 62 detects an expiring of the first folding unit 12 sheet 60, folded by the Falzwalzenpaar 23 and perforated by the pair of knife shaft 52 has been. Since the sheet side edge 62 always parallel to through the pair of knife shafts 52 formed perforation or creasing lines can pass through the light curtain 58 are detected in the manner described with reference to FIGS. 3 to 6, whether the Perforation or crease lines run exactly.

Eine Korrektur schiefer Perforationslinien wird normalerweise durch Ziehen einer vor dem Messerwellenpaar 52 im Falzwerk 12 angeordneten Bogenweiche (nicht gezeigt) auf der voreilenden Seite durchgeführt. Durch das Ziehen wird eine Wegverlängerung beim Durchlaufen der Bogenweiche erzwungen und damit das Voreilen kompensiert. Die Benutzung des Lichtvorhangs 58 hinter dem Messerwellenpaar 52 erlaubt die Überwachung des Geradeauslaufs der auslaufenden Bogenseitenkante 62 und damit der im Messerwellenpaar 52 erzeugten Perforationslinie. Correcting slate perforation lines is usually done by pulling one the pair of knife shafts 52 arranged in the folding unit 12 curved switch (not shown) performed on the leading page. Pulling becomes a path extension enforced when passing through the curved switch and thus the lead compensated. The use of the light curtain 58 behind the pair of knife shafts 52 allows monitoring of the directional stability of the expiring arc side edge 62 and thus the perforation line generated in the pair of knife shafts 52.

Jede Abweichung einer ermittelten Messkurve von einer Referenzkurve kann dem Bediener durch ein Fehlersignal der Prozessoreinrichtung signalisiert werden, so dass die entsprechende Bogenweiche gezogen werden kann.Any deviation of a determined measuring curve from a reference curve can be the Operators are signaled by an error signal of the processor device, so that the corresponding bow diverter can be pulled.

Claims (8)

Verfahren zur Lagekontrolle eines in einer Falzmaschine transportierten Bogens (36, 38, 48), bei dem während des Transports des Bogens (36, 38, 48) an wenigstens einem Erfassungsort durch eine Erfassungseinrichtung (32, 34, 46) die Positionen einer im Wesentlichen in Transportrichtung (TR) verlaufenden Bogenkante (37, 39, 49) erfasst werden, von der Erfassungseinrichtung (32, 34, 46) den erfassten Positionen entsprechende Messwerte an eine Prozessoreinrichtung weitergegeben werden, die Prozessoreinrichtung auf der Basis der erfassten Messwerte und dem Weg des Bogens (36, 38, 48) durch den Erfassungsort eine Messkurve (MK1, MK2, MK3) errechnet, die Prozessoreinrichtung die Messkurve (MK1, MK2, MK3) mit einer vorherbestimmten Referenzkurve (RK) vergleicht, die Prozessoreinrichtung ein Fehlersignal ausgibt, wenn die Messkurve (MK1, MK2, MK3) von der Referenzkurve (RK) abweicht. Method for checking the position of a sheet transported in a folding machine (36, 38, 48), in which during the transport of the sheet (36, 38, 48) at at least one detection location by a detection device (32, 34, 46) the positions of a substantially in the transport direction (TR) extending sheet edge (37, 39, 49) are detected from the detection device (32, 34, 46) corresponding measured values corresponding to the detected positions are passed on to a processor device, the processor device calculates a measurement curve (MK1, MK2, MK3) on the basis of the detected measured values and the path of the arc (36, 38, 48) through the detection location, the processor device compares the measurement curve (MK1, MK2, MK3) with a predetermined reference curve (RK), the processor device outputs an error signal if the measurement curve (MK1, MK2, MK3) deviates from the reference curve (RK). Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass bei geringer Abweichung der Messkurve (MK1, MK2, MK3) von der Referenzkurve (RK) nach Ausgabe des Fehlersignals ein Hinweis für einen Bediener der Falzmaschine (10) ausgegeben wird.A method according to claim 1, characterized in that at low deviation of the measurement curve (MK1, MK2, MK3) of the reference curve (RK) after output of the error signal, an indication for an operator of the folding machine (10) is output. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass bei großer Abweichung der Messkurve (MK1, MK2, MK3) von der Referenzkurve (RK) nach Ausgabe des Fehlersignals die Falzmaschine (10) angehalten wird.A method according to claim 1, characterized in that at large deviation of the measured curve (MK1, MK2, MK3) of the reference curve (RK) after the output of the error signal, the folding machine (10) is stopped. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass nach Ausgabe des Fehlersignals die für die Abweichung verantwortlichen Antriebe der Falzmaschine (10) so angesteuert werden, dass bei nachfolgenden Bogen die Messkurve (MK1, MK2, MK3) und die Referenzkurve (RK) übereinstimmen.Method according to Claim 1, characterized in that, after the error signal has been output, the drives of the folding machine (10) responsible for the deviation are controlled in such a way that the measuring curve (MK1, MK2, MK3) and the reference curve (RK) coincide with subsequent sheets. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Erfassungseinrichtung (32, 34, 46) von einem Lichtvorhang gebildet wird, der abhängig von der Abdeckung durch den Bogen (36, 38, 48) einen Spannungswert als Messwert an die Prozessoreinrichtung weitergibt. Method according to one of the preceding claims, characterized in that the detection device (32, 34, 46) is formed by a light curtain, which transmits a voltage value as a measured value to the processor device depending on the coverage by the sheet (36, 38, 48). Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Erfassungseinrichtung (32, 34, 46) von einem Lichtvorhang gebildet wird, der abhängig von der Abdeckung durch den Bogen (36, 38, 48) als Messwert einen Stromwert, eine serielle Datenschnittstelle oder eine parallele Schnittstelle an die Prozessoreinrichtung weitergibt.Method according to one of claims 1 to 5, characterized in that the detection device (32, 34, 46) is formed by a light curtain, depending on the cover by the sheet (36, 38, 48) as a measured value, a current value, a serial Data interface or a parallel interface to the processor device passes. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Erfassungseinrichtung von einer Kamera gebildet, die an ein Bildverarbeitungssystem angeschlossen ist.Method according to one of the preceding claims, characterized in that the detection device is formed by a camera which is connected to an image processing system. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Referenzkurve (RK) bei Durchlauf eines Eichbogens ermittelt wird.Method according to one of the preceding claims, characterized in that the reference curve (RK) is determined during passage of a calibration sheet.
EP04009558A 2004-04-22 2004-04-22 Method of position control for a sheet passing through a folding machine Expired - Lifetime EP1588965B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE502004004356T DE502004004356D1 (en) 2004-04-22 2004-04-22 Method for checking the position of a sheet transported in a folding machine
EP04009558A EP1588965B1 (en) 2004-04-22 2004-04-22 Method of position control for a sheet passing through a folding machine
US11/110,692 US20050239621A1 (en) 2004-04-22 2005-04-21 Method for monitoring the position of a sheet transported in a folding machine
CN2005100676161A CN1689949B (en) 2004-04-22 2005-04-22 Method for detecting delivered paper position in paper folding machine

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EP04009558A EP1588965B1 (en) 2004-04-22 2004-04-22 Method of position control for a sheet passing through a folding machine

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EP (1) EP1588965B1 (en)
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EP1588965B1 (en) 2007-07-18
DE502004004356D1 (en) 2007-08-30
US20050239621A1 (en) 2005-10-27
CN1689949A (en) 2005-11-02
CN1689949B (en) 2010-06-09

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