EP1270473A2 - Skew compensation device for corrugated board machine - Google Patents

Skew compensation device for corrugated board machine Download PDF

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Publication number
EP1270473A2
EP1270473A2 EP02012776A EP02012776A EP1270473A2 EP 1270473 A2 EP1270473 A2 EP 1270473A2 EP 02012776 A EP02012776 A EP 02012776A EP 02012776 A EP02012776 A EP 02012776A EP 1270473 A2 EP1270473 A2 EP 1270473A2
Authority
EP
European Patent Office
Prior art keywords
material web
transverse
transport direction
web
position sensor
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Withdrawn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
EP02012776A
Other languages
German (de)
French (fr)
Other versions
EP1270473A3 (en
Inventor
Karl Ruhland
Ulrich Bösl
Karl Waldeck
Stefan Spickenreuther
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.)
BHS Corrugated Maschinen und Anlagenbau GmbH
Original Assignee
BHS Corrugated Maschinen und Anlagenbau GmbH
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 BHS Corrugated Maschinen und Anlagenbau GmbH filed Critical BHS Corrugated Maschinen und Anlagenbau GmbH
Publication of EP1270473A2 publication Critical patent/EP1270473A2/en
Publication of EP1270473A3 publication Critical patent/EP1270473A3/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/20—Corrugating; Corrugating combined with laminating to other layers
    • B31F1/24—Making webs in which the channel of each corrugation is transverse to the web feed
    • B31F1/26—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions
    • B31F1/28—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions combined with uniting the corrugated webs to flat webs ; Making double-faced corrugated cardboard
    • B31F1/2831—Control
    • B31F1/2836—Guiding, e.g. edge alignment; Tensioning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/02—Registering, tensioning, smoothing or guiding webs transversely
    • B65H23/0204—Sensing transverse register of web
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/02—Registering, tensioning, smoothing or guiding webs transversely
    • B65H23/032—Controlling transverse register of web
    • B65H23/038—Controlling transverse register of web by rollers

Definitions

  • the invention relates to a device for compensating for skew a moving material web, in particular a paper web, in a paper processing machine, such as a corrugated cardboard machine.
  • the invention has for its object to provide a device with the skew of a moving material web in a paper processing machine be detected and compensated for as simply as possible can.
  • the object is solved by the features of claim 1.
  • the core the invention is that the transverse position of a moving web of material at two different longitudinal positions arranged one behind the other is determined and from this the slope of any one other longitudinal position can be determined.
  • On the along the web arranged machining units become the machining tools according to the determined cross deviation with regard to corrected their position. It is therefore not necessary to have the machining units to move across as a whole.
  • one compensation of the inclined course as accurate as possible.
  • a corrugated cardboard system has one Slitting and creasing machine 1 through which a corrugated cardboard web 2 is guided along a desired transport direction 3.
  • the machine 1 has along the transport direction 3 an edge trimming station 4, a first Creasing station 5, a second creasing station 6 and a first slitting station 7 and a second slitting station 8.
  • the edge trimming station 4 has in the region of the lateral edges 9 of the Corrugated cardboard web 2 two pivotable about a vertical pivot axis 10 rotating knife 11, which is arranged below the corrugated web 2 are and can be brought into engagement with the corrugated cardboard web 2.
  • the knives 11 are transverse to the direction of transport by an associated actuator 12 3verschiebbar.
  • the knives 11 and the actuators 12 are opposite Supported side walls 13 of a machine frame 14.
  • the creasing stations 5 and 6 point between one another Side walls 13 supported pairs of tool beds 15, 16 and 17, 18 on.
  • the tool beds 15 and 16 and 17 and 18 are in pairs arranged one above the other, approximately mirror-symmetrically to the corrugated cardboard web 2.
  • the tool beds 15 to 18 are each horizontal by one running pivot axis pivotable.
  • On each of the corrugated cardboard 2 facing sides of the tool beds 15 to 18 are guide rails 19 attached, on each of which in turn in pairs assigned tool carriers 20 to 23 horizontally and transversely to the transport direction 3 are slidably mounted.
  • On the upper tool carriers 20 and 21 grooving tools 24 and 25 are provided, each with underneath counter-creasing tools arranged on the tool carriers 22 and 23 26 or 27 cooperate.
  • the tools 24 to 27 are via belt drives 28 drivable.
  • the creasing stations 5, 6 also have a vertical threaded spindle 29 running in the direction of transport 3 and rotatably mounted on, which can be driven via a spindle motor 30 connected to the latter.
  • the individual creasing tools 24 to 27, of which several each on the Associated tool carriers 20 to 23 are arranged on the associated Threaded spindle 29 can be coupled to a displacement of the corresponding Creasing tool 24 to 27 to effect. That way you can with a threaded spindle 29 several along a threaded spindle 29 arranged tools 24 to 27 individually or all moved together become.
  • a 1-spindle positioning unit to the applicant's DE 100 38 511 A1.
  • As for the more precise Construction of the creasing stations 5 and 6 as well as the slitting stations 7 and 8 is referred to DE 197 54 799 A1 (corresponds to US Ser. 09/203 575).
  • the slitting stations 7 and 8 point below the corrugated cardboard web 2 pivotable according to the structure of the creasing stations 5 and 6
  • the knives 35 can be brought into engagement with the corrugated cardboard web 2 and act with rotary drives arranged above the corrugated cardboard web 2 Brush rollers 36, 37 together when the knives 35 are in the corrugated web 2 are immersed.
  • transverse displaceability of the Knife 35 is referred to the description of the creasing stations 5 and 6.
  • a device for measuring a skew of the corrugated cardboard web 2 has two connected to the side walls 13, transversely to the transport direction 3 extending cross members arranged above the corrugated cardboard web 2 38 and 39 on.
  • the cross member 38 is on the lying in the transport direction 3 End of the edge trimming station 4 arranged.
  • the cross member 39 is arranged at the beginning of the slitting station 7.
  • Cameras 40 are arranged which have a detection area 41. Both Cameras 40 are commercially available cameras, in particular digital cameras, for subsequent image processing for capture the position of the edges 9 are suitable.
  • the cameras 40 are on signal lines 42 connected to a control device 43, which in turn is connected to the spindle motors 30 via signal lines 44.
  • FIG. 5 is not to scale and represents a great simplification of the machine 1 in order to better explain the principle of operation.
  • the target course 45 of a corrugated cardboard web 2 through the machine 1 runs parallel to the target transport direction 3. Due to faults in the corrugated cardboard system, it may be that the corrugated cardboard web 2 runs along an actual transport direction 46 which is oblique and not parallel to the target transport direction 3 runs.
  • 5 shows only the cameras 40 arranged above the right edge 9 in the direction of transport 3, two cameras 40 also being arranged in the area of the left edge 9. The cameras 40 are arranged at two known longitudinal positions x S1 and x S2 .
  • the measurement data of the cameras 40 are given via lines 42 to the control device 43, which calculates the course of the corrugated cardboard web 2. From the measurement data, the desired transverse positions ySOLL W corresponding to the skew of the corrugated cardboard web 2 are calculated for the stations 5 to 8, which are arranged at a specific longitudinal position x W , for the respective tool 24 to 27 and 35.
  • a corresponding control signal to the corresponding motor 30 is added via the lines 44, which via the threaded spindle 29 of the corresponding tool of the actual transverse position Yist W transverse position setpoint shifts Ysoll W in the.
  • all tools 24 to 27 and 35 assigned to a threaded spindle 29 are shifted at once in accordance with the required slip compensation. Since the necessary corrections are usually relatively small displacements, the tools 24 to 27 and 35 can also be moved transversely when they are in engagement with the corrugated cardboard web 2. It is particularly advantageous in the arrangement of the stations 4 to 8 that the edge trimming station 4 is arranged upstream of the creasing stations 5 and 6 from the slitting stations 7 and 8.
  • the actual transport direction 46 of the corrugated cardboard web 2 runs parallel to the desired transport direction 3, but the corrugated cardboard web 2 does not run centrally through the machine 1, but rather is offset transversely.
  • the device according to the invention can also be used to correct a corresponding web offset without changes.
  • the transverse position of the corrugated cardboard web 2 can also take place by means of a marking arranged on the corrugated cardboard web 2, for example a printed line.
  • a second embodiment will now be described with reference to Figs described the invention. Identical parts get the same Reference numerals as in the first embodiment, on the description thereof is hereby referred. Structurally different, however Functionally similar parts are given the same reference symbols with a superscript stroke.
  • the main difference from the first embodiment is that the edge trimming station 4 the stations 5 to 8 is subordinate. Accordingly, two cameras 40 'are in front of the first Station 5 and arranged between stations 6 and 7, which, like in the first embodiment, the position of the edge 9 of the corrugated web 2 capture. The arrangement of station 4 behind stations 5 to 8 leads to the cameras 40 each capturing an untrimmed edge 9.
  • the arrangement according to the second embodiment takes place in particular then, for operational reasons, the edge trimming after the creasing stations 5 and 6 and the slitting stations 7 and 8 must be done.
  • FIGS. 8 and 9 A third embodiment of the invention will now be described with reference to FIGS. 8 and 9. Identical parts are given the same reference numerals as in the first embodiment, to the description of which reference is hereby made. Structurally different, but functionally similar parts are given the same reference numerals with two prime lines.
  • the stations 4 to 8 are arranged one behind the other along the transport direction 3.
  • the central difference compared to the first embodiment is that the first pair of cameras 40 is not provided in the direction of transport 3.
  • the function of the first two position sensors is taken over by the actuators 12 of the edge trimming station 4.
  • the actuators 12 are connected to the control device 43 via lines 42.
  • the control device 43 has information at all times about the transverse positions of the knives 11.
  • the transverse positions of the knives 11 thus correspond to the transverse position data y S1 of the front camera pair 40 in the first embodiment. From this transverse position data and the transverse position data of the downstream camera pair 40 ", the control device 43 converts the oblique course of the corrugated cardboard web 2. It is advantageous in this embodiment that only two cameras "and not four cameras 40 as in the first embodiment are required.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Making Paper Articles (AREA)
  • Controlling Sheets Or Webs (AREA)
  • Registering Or Overturning Sheets (AREA)

Abstract

The system for compensating for slanting feed of a paper web (2) through a corrugated cardboard making machine comprises digital cameras (40) which detect the positions of the edges of the web. The data from these is fed to a control unit (43) which operates a spindle motor (30) to adjust the position of the processing tools (11, 24, 35) on the web.

Description

Die Erfindung betrifft eine Vorrichtung zur Kompensation des Schräglaufs einer bewegten Materialbahn, insbesondere einer Papierbahn, in einer Papierverarbeitungsmaschine, wie zum Beispiel einer Wellpappemaschine.The invention relates to a device for compensating for skew a moving material web, in particular a paper web, in a paper processing machine, such as a corrugated cardboard machine.

In Wellpappeanlagen kommt es aufgrund von Ungenauigkeiten in der Führung der verschiedenen Materialbahnen dazu, daß die Materialbahnen gegenüber einer Soll-Transportrichtung schräg verlaufen. Aus der DE 196 16 945 A1 ist eine Vorrichtung zur Schräglauf-Kompensation bekannt, bei der eine pendelnde Walze eingesetzt wird, um den Schräglauf der bewegten Materialbahn zu korrigieren. Vor allem bei bereits bestehenden Anlagen können entsprechende Kompensations-Einrichtungen nicht leicht nachträglich eingebaut werden.In corrugated cardboard systems, it occurs due to inaccuracies in the management of the different material webs so that the material webs face each other a slanted transport direction. From DE 196 16 945 A1 a device for skew compensation is known in which an oscillating roller is used to skew the moving Correct material web. Especially with existing systems corresponding compensation devices cannot easily be retrofitted to be built in.

Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung zu schaffen, mit der der Schräglauf einer bewegten Materialbahn in einer Papierverarbeitungsmaschine möglichst einfach detektiert und kompensiert werden kann.The invention has for its object to provide a device with the skew of a moving material web in a paper processing machine be detected and compensated for as simply as possible can.

Die Aufgabe wird durch die Merkmale des Anspruchs 1 gelöst. Der Kern der Erfindung besteht darin, daß die Quer-Position einer bewegten Materialbahn an zwei verschiedenen hintereinander angeordneten Längs-Positionen bestimmt wird und hieraus der Schrägverlauf einer beliebigen anderen Längs-Position ermittelt werden kann. An der entlang der Materialbahn angeordneten Bearbeitungs-Einheiten werden die BearbeitungsWerkzeuge gemäß der ermittelten Quer-Abweichung automatisch hinsichtlich ihrer Position korrigiert. Es ist somit nicht erforderlich, die Bearbeitungs-Einheiten als Ganzes quer zu verschieben. Darüber hinaus ist eine möglichst genaue Kompensation des Schrägverlaufs möglich.The object is solved by the features of claim 1. The core the invention is that the transverse position of a moving web of material at two different longitudinal positions arranged one behind the other is determined and from this the slope of any one other longitudinal position can be determined. On the along the web arranged machining units become the machining tools according to the determined cross deviation with regard to corrected their position. It is therefore not necessary to have the machining units to move across as a whole. In addition, one compensation of the inclined course as accurate as possible.

Weitere vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen.Further advantageous embodiments of the invention result from the Dependent claims.

Zusätzliche Merkmale und Einzelheiten der Erfindung ergeben sich aus der Beschreibung dreier Ausführungsbeispiele anhand der Zeichnungen. Es zeigen:

Fig. 1
eine schematische Draufsicht auf eine erfindungsgemäße Vorrichtung gemäß einem ersten Ausführungsbeispiel,
Fig. 2
eine Seitenansicht der Vorrichtung gemäß Fig. 1,
Fig. 3
eine Draufsicht der Vorrichtung gemäß Fig. 1,
Fig. 4
eine Frontansicht gemäß dem Sichtpfeil IV in Fig. 2,
Fig. 5
eine schematische Darstellung der Funktionsweise der Vorrichtung gemäß Fig. 1,
Fig. 6
eine schematische Draufsicht auf eine erfindungsgemäße Vorrichtung gemäß einem zweiten Ausführungsbeispiel,
Fig. 7
eine Draufsicht der Vorrichtung gemäß Fig. 6,
Fig. 8
eine schematische Draufsicht auf eine Vorrichtung gemäß einem dritten Ausführungsbeispiel, und
Fig. 9
eine Draufsicht der Vorrichtung gemäß Fig. 8.
Additional features and details of the invention result from the description of three exemplary embodiments with reference to the drawings. Show it:
Fig. 1
2 shows a schematic top view of a device according to the invention in accordance with a first exemplary embodiment,
Fig. 2
2 shows a side view of the device according to FIG. 1,
Fig. 3
2 shows a top view of the device according to FIG. 1,
Fig. 4
3 shows a front view according to the arrow IV in FIG. 2,
Fig. 5
1 shows a schematic illustration of the mode of operation of the device according to FIG. 1,
Fig. 6
2 shows a schematic top view of a device according to the invention in accordance with a second exemplary embodiment,
Fig. 7
6 shows a top view of the device according to FIG. 6,
Fig. 8
is a schematic plan view of a device according to a third embodiment, and
Fig. 9
8 shows a top view of the device according to FIG. 8.

Im folgenden wird unter Bezugnahme auf die Fig. 1 bis 5 eine erste Ausführungsform der Erfindung beschrieben. Eine Wellpappeanlage weist eine Längsschneide- und Rill-Maschine 1 auf, durch die eine Wellpappebahn 2 entlang einer Soll-Transportrichtung 3 geführt wird. Die Maschine 1 weist entlang der Transportrichtung 3 eine Randbeschnitt-Station 4, eine erste Rill-Station 5, eine zweite Rill-Station 6 sowie eine erste Längsschneide-Station 7 sowie eine zweite Längsschneide-Station 8 auf.A first embodiment will now be described with reference to Figs described the invention. A corrugated cardboard system has one Slitting and creasing machine 1 through which a corrugated cardboard web 2 is guided along a desired transport direction 3. The machine 1 has along the transport direction 3 an edge trimming station 4, a first Creasing station 5, a second creasing station 6 and a first slitting station 7 and a second slitting station 8.

Die Randbeschnitt-Station 4 weist im Bereich der seitlichen Ränder 9 der Wellpappebahn 2 zwei um eine vertikale Schwenkachse 10 verschwenkbare rotierende Messer 11 auf, die unterhalb der Wellpappebahn 2 angeordnet sind und mit der Wellpappebahn 2 in Eingriff bringbar sind. Die Messer 11 sind durch einen zugehörigen Stell-Antrieb 12 quer zur Transportrichtung 3verschiebbar. Die Messer 11 sowie die Stell-Antriebe 12 sind gegenüber Seitenwänden 13 eines Maschinen-Gestells 14 abgestützt. Der genauere Aufbau der Randbeschnitt-Station 4, die bei einem Formatwechsel das Schneiden endloser Randstreifen ermöglicht, ist aus der EP 0 692 370 B1 (entspricht US Ser. No. 08/503 425) bekannt.The edge trimming station 4 has in the region of the lateral edges 9 of the Corrugated cardboard web 2 two pivotable about a vertical pivot axis 10 rotating knife 11, which is arranged below the corrugated web 2 are and can be brought into engagement with the corrugated cardboard web 2. The knives 11 are transverse to the direction of transport by an associated actuator 12 3verschiebbar. The knives 11 and the actuators 12 are opposite Supported side walls 13 of a machine frame 14. The more precise Structure of the edge trimming station 4, which when changing the format It is possible to cut endless edge strips from EP 0 692 370 B1 (corresponds to US Ser. No. 08/503 425).

Die Rill-Stationen 5 und 6 weisen zwischen einander gegenüberliegenden Seitenwänden 13 abgestützte Paare von Werkzeugbetten 15, 16 sowie 17, 18 auf. Die Werkzeugbetten 15 und 16 sowie 17 und 18 sind paarweise übereinander angeordnet und zwar etwa spiegelsymmetrisch zur Wellpappebahn 2. Die Werkzeugbetten 15 bis 18 sind jeweils um eine horizontal verlaufende Schwenkachse verschwenkbar. An den jeweils der Wellpappebahn 2 zugewandten Seiten der Werkzeugbetten 15 bis 18 sind Führungsschienen 19 angebracht, auf denen jeweils einander wiederum paarweise zugeordnete Werkzeugträger 20 bis 23 horizontal und quer zur Transportrichtung 3 verschiebbar gelagert sind. An den oberen Werkzeugträgern 20 und 21 sind Rillwerkzeuge 24 bzw. 25 vorgesehen, die mit jeweils darunter an den Werkzeugträgern 22 und 23 angeordneten Gegen-Rillwerkzeugen 26 bzw. 27 zusammenwirken. Die Werkzeuge 24 bis 27 sind über Riemenantriebe 28 antreibbar. Die Rill-Stationen 5, 6 weisen ferner eine senkrecht zur Transportrichtung 3 verlaufende, drehbar gelagerte Gewindespindel 29 auf, die über einen mit dieser verbundenen Spindel-Motor 30 antreibbar ist. Die einzelnen Rillwerkzeuge 24 bis 27, von denen jeweils mehrere an dem zugehörigen Werkzeugträger 20 bis 23 angeordnet sind, sind an die zugehörige Gewindespindel 29 kuppelbar, um eine Verschiebung des entsprechenden Rillwerkzeuges 24 bis 27 zu bewirken. Auf diese Weise können mit einer Gewindespindel 29 mehrere entlang einer Gewindespindel 29 angeordnete Werkzeuge 24 bis 27 einzeln oder alle zusammen verschoben werden. Für den genaueren Aufbau einer 1-Spindel-Positioniereinheit wird auf die DE 100 38 511 A1 der Anmelderin verwiesen. Hinsichtlich des genaueren Aufbaus der Rill-Stationen 5 und 6 sowie der Längsschneide-Stationen 7 und 8 wird auf die DE 197 54 799 A1 (entspricht US Ser. No. 09/203 575) verwiesen.The creasing stations 5 and 6 point between one another Side walls 13 supported pairs of tool beds 15, 16 and 17, 18 on. The tool beds 15 and 16 and 17 and 18 are in pairs arranged one above the other, approximately mirror-symmetrically to the corrugated cardboard web 2. The tool beds 15 to 18 are each horizontal by one running pivot axis pivotable. On each of the corrugated cardboard 2 facing sides of the tool beds 15 to 18 are guide rails 19 attached, on each of which in turn in pairs assigned tool carriers 20 to 23 horizontally and transversely to the transport direction 3 are slidably mounted. On the upper tool carriers 20 and 21 grooving tools 24 and 25 are provided, each with underneath counter-creasing tools arranged on the tool carriers 22 and 23 26 or 27 cooperate. The tools 24 to 27 are via belt drives 28 drivable. The creasing stations 5, 6 also have a vertical threaded spindle 29 running in the direction of transport 3 and rotatably mounted on, which can be driven via a spindle motor 30 connected to the latter. The individual creasing tools 24 to 27, of which several each on the Associated tool carriers 20 to 23 are arranged on the associated Threaded spindle 29 can be coupled to a displacement of the corresponding Creasing tool 24 to 27 to effect. That way you can with a threaded spindle 29 several along a threaded spindle 29 arranged tools 24 to 27 individually or all moved together become. For the more precise construction of a 1-spindle positioning unit to the applicant's DE 100 38 511 A1. As for the more precise Construction of the creasing stations 5 and 6 as well as the slitting stations 7 and 8 is referred to DE 197 54 799 A1 (corresponds to US Ser. 09/203 575).

Die Längsschneide-Stationen 7 und 8 weisen unterhalb der Wellpappebahn 2 entsprechend dem Aufbau der Rillstationen 5 und 6 verschwenkbare Werkzeugbetten 31, 32 auf, an denen an Werkzeugträgern 33, 34 angeordnete, quer zur Transportrichtung 3 verschiebbare, rotierende Messer 35 vorgesehen sind, die über einen entsprechenden Riemenantrieb 28 antreibbar sind. Die Messer 35 sind mit der Wellpappebahn 2 in Eingriff bringbar und wirken mit oberhalb der Wellpappebahn 2 angeordneten, drehangetriebenen Bürstenwalzen 36, 37 zusammen, wenn die Messer 35 in die Wellpappebahn 2 eingetaucht sind. Hinsichtlich der Querverschiebbarkeit der Messer 35 wird auf die Beschreibung der Rill-Stationen 5 und 6 verwiesen.The slitting stations 7 and 8 point below the corrugated cardboard web 2 pivotable according to the structure of the creasing stations 5 and 6 Tool beds 31, 32 on which are arranged on tool carriers 33, 34, 3 rotating knives 35 which can be displaced transversely to the transport direction are provided, which can be driven via a corresponding belt drive 28 are. The knives 35 can be brought into engagement with the corrugated cardboard web 2 and act with rotary drives arranged above the corrugated cardboard web 2 Brush rollers 36, 37 together when the knives 35 are in the corrugated web 2 are immersed. With regard to the transverse displaceability of the Knife 35 is referred to the description of the creasing stations 5 and 6.

Eine Einrichtung zur Messung eines Schräglaufs der Wellpappebahn 2 weist zwei mit den Seitenwänden 13 verbundene, quer zur Transportrichtung 3 verlaufende, oberhalb der Wellpappebahn 2 angeordnete Querträger 38 und 39 auf. Der Querträger 38 ist an dem in Transportrichtung 3 liegenden Ende der Randbeschnitt-Station 4 angeordnet. Der Querträger 39 ist am Anfang der Längsschneide-Station 7 angeordnet. An den Querträgern 38 und 39 sind jeweils ungefähr oberhalb der Ränder 9 der Materialbahn 2 Kameras 40 angeordnet, die einen Erfassungsbereich 41 besitzen. Bei den Kameras 40 handelt es sich um handelsübliche Kameras, insbesondere Digitalkameras, die für eine anschließende Bildverarbeitung zur Erfassung der Position der Ränder 9 geeignet sind. Die Kameras 40 sind über Signal-Leitungen 42 mit einer Steuer-Einrichtung 43 verbunden, welche ihrerseits über Signal-Leitungen 44 mit den Spindel-Motoren 30 verbunden ist.A device for measuring a skew of the corrugated cardboard web 2 has two connected to the side walls 13, transversely to the transport direction 3 extending cross members arranged above the corrugated cardboard web 2 38 and 39 on. The cross member 38 is on the lying in the transport direction 3 End of the edge trimming station 4 arranged. The cross member 39 is arranged at the beginning of the slitting station 7. On the cross beams 38 and 39 are each approximately above the edges 9 of the material web 2 Cameras 40 are arranged which have a detection area 41. Both Cameras 40 are commercially available cameras, in particular digital cameras, for subsequent image processing for capture the position of the edges 9 are suitable. The cameras 40 are on signal lines 42 connected to a control device 43, which in turn is connected to the spindle motors 30 via signal lines 44.

Im folgenden wird insbesondere unter Bezugnahme auf Fig. 5 die Kompensation eines Schräglaufs der Wellpappebahn 2 beschrieben. Es wird darauf hingewiesen, daß Fig. 5 nicht maßstabsgetreu ist und eine starke Vereinfachung der Maschine 1 darstellt, um das Wirkungsprinzip besser zu erläutern. Der Sollverlauf 45 einer Wellpappebahn 2 durch die Maschine 1 verläuft parallel zur Soll-Transportrichtung 3. Aufgrund von Störungen in der Wellpappeanlage kann es sein, daß die Wellpappebahn 2 entlang einer Ist-Transportrichtung 46 verläuft, die schräg und nicht parallel zur Soll-Transportrichtung 3 verläuft. In Fig. 5 sind nur die oberhalb des in Transportrichtung 3 rechten Randes 9 angeordneten Kameras 40 dargestellt, wobei auch im Bereich des linken Randes 9 zwei Kameras 40 angeordnet sind. Die Kameras 40 sind an zwei bekannten Längs-Positionen xS1 und xS2 angeordnet. Durch die Kameras 40 wird die Quer-Position des Randes 9 ermittelt, die als yS1 und yS2 bezeichnet wird. Aus diesen Daten, d. h. zwei in einem kartesischen Koordinatensystem vorgegebenen bekannten Punkten, läßt sich die Position des Randes 9 an einer beliebigen anderen Längs-Position berechnen. Etwaige Ungenauigkeiten können dadurch eliminiert werden, daß die ermittelten Positionsdaten des linken Randes 9 und rechten Randes 9 miteinander verglichen werden. Die Meßdaten der Kameras 40 werden über die Leitungen 42 an die Steuer-Einrichtung 43 gegeben, die den Verlauf der Wellpappebahn 2 berechnet. Aus den Meßdaten wird für die Stationen 5 bis 8, die an einer bestimmten Längs-Position xW angeordnet sind, für das jeweilige Werkzeug 24 bis 27 und 35 die dem Schräglauf der Wellpappebahn 2 entsprechende Soll-Quer-Positionen ySOLLW berechnet. Im Anschluß daran wird über die Leitungen 44 ein entsprechendes Steuersignal an den entsprechenden Motor 30 gegeben, der über die Gewindespindel 29 das entsprechende Werkzeug von der Ist-Querposition yISTW in die Soll-Quer-Position ySOLLW verschiebt. In der Regel werden alle einer Gewindespindel 29 zugeordnete Werkzeuge 24 bis 27 und 35 auf einmal entsprechend der erforderlichen Schräglaufkompensation verschoben. Da es sich bei den erforderlichen Korrekturen in der Regel um vergleichsweise geringe Verschiebungen handelt, können die Werkzeuge 24 bis 27 und 35 auch quer verschoben werden, wenn sie sich im Eingriff mit der Wellpappebahn 2 befinden. Besonders vorteilhaft an der Anordnung der Stationen 4 bis 8 ist, daß die Randbeschnitt-Station 4 den Rill-Stationen 5 und 6 den Längsschneide-Stationen 7 und 8 vorgeordnet ist. Hierdurch ist es möglich, daß die Kameras 40 den Verlauf eines beschnittenen Randes 9 verfolgen, der eine sehr viel klarere und geradere Kontur hat, als ein unbeschnittener Rand 9. Die Nutzung der Meßdaten zweier an einer Höhe der Wellpappebahn 2 angeordneter Kameras ist besonders wichtig, wenn ein Formatwechsel erfolgt und deshalb die Außenkontur des Randes 9 nicht gerade, sondern geschwungen verläuft. Durch die Nutzung der Daten der Position des linken und rechten Randes 9 der Wellpappebahn 2 ist es möglich, den Schräglauf der Wellpappebahn 2 präzise zu ermitteln und die Abweichung einer Soll-Quer-Position von einer Ist-Quer-Position an einer beliebigen Längs-Position der Wellpappebahn 2 vorauszuberechnen. Mit der Schräglauf-Meßeinrichtung ist es darüber hinaus auch möglich, einen Versatz der Wellpappebahn 2 zu kompensieren. Bei diesem verläuft die Ist-Transportrichtung 46 der Wellpappebahn 2 zwar parallel zur Soll-Transportrichtung 3, die Wellpappebahn 2 verläuft jedoch nicht mittig durch die Maschine 1, sondern quer versetzt. Die Korrektur eines entsprechenden Bahnversatzes kann mit der erfindungsgemäßen Vorrichtung ebenfalls ohne Veränderungen durchgeführt werden. Die Querposition der Wellpappebahn 2 kann auch durch eine auf der Wellpappebahn 2 angeordnete Markierung, z.B. eine aufgedruckte Linie, erfolgen.In the following, the compensation of a skew of the corrugated cardboard web 2 is described in particular with reference to FIG. It is pointed out that FIG. 5 is not to scale and represents a great simplification of the machine 1 in order to better explain the principle of operation. The target course 45 of a corrugated cardboard web 2 through the machine 1 runs parallel to the target transport direction 3. Due to faults in the corrugated cardboard system, it may be that the corrugated cardboard web 2 runs along an actual transport direction 46 which is oblique and not parallel to the target transport direction 3 runs. 5 shows only the cameras 40 arranged above the right edge 9 in the direction of transport 3, two cameras 40 also being arranged in the area of the left edge 9. The cameras 40 are arranged at two known longitudinal positions x S1 and x S2 . The transverse position of the edge 9, which is designated as y S1 and y S2 , is determined by the cameras 40. From this data, ie two known points specified in a Cartesian coordinate system, the position of the edge 9 at any other longitudinal position can be calculated. Any inaccuracies can be eliminated by comparing the determined position data of the left edge 9 and right edge 9 with one another. The measurement data of the cameras 40 are given via lines 42 to the control device 43, which calculates the course of the corrugated cardboard web 2. From the measurement data, the desired transverse positions ySOLL W corresponding to the skew of the corrugated cardboard web 2 are calculated for the stations 5 to 8, which are arranged at a specific longitudinal position x W , for the respective tool 24 to 27 and 35. Subsequently, a corresponding control signal to the corresponding motor 30 is added via the lines 44, which via the threaded spindle 29 of the corresponding tool of the actual transverse position Yist W transverse position setpoint shifts Ysoll W in the. As a rule, all tools 24 to 27 and 35 assigned to a threaded spindle 29 are shifted at once in accordance with the required slip compensation. Since the necessary corrections are usually relatively small displacements, the tools 24 to 27 and 35 can also be moved transversely when they are in engagement with the corrugated cardboard web 2. It is particularly advantageous in the arrangement of the stations 4 to 8 that the edge trimming station 4 is arranged upstream of the creasing stations 5 and 6 from the slitting stations 7 and 8. This makes it possible for the cameras 40 to follow the course of a trimmed edge 9 which has a much clearer and straighter contour than an untrimmed edge 9. The use of the measurement data of two cameras arranged at a height of the corrugated cardboard web 2 is particularly important, if there is a change of format and therefore the outer contour of the edge 9 is not straight but curved. By using the data of the position of the left and right edge 9 of the corrugated cardboard web 2, it is possible to precisely determine the skew of the corrugated cardboard web 2 and the deviation of a desired transverse position from an actual transverse position at any longitudinal position to calculate the corrugated cardboard web 2 in advance. With the skew measuring device, it is also possible to compensate for an offset of the corrugated cardboard web 2. In this case, the actual transport direction 46 of the corrugated cardboard web 2 runs parallel to the desired transport direction 3, but the corrugated cardboard web 2 does not run centrally through the machine 1, but rather is offset transversely. The device according to the invention can also be used to correct a corresponding web offset without changes. The transverse position of the corrugated cardboard web 2 can also take place by means of a marking arranged on the corrugated cardboard web 2, for example a printed line.

Im folgenden wird unter Bezugnahme auf die Fig. 6 und 7 eine zweite Ausführungsform der Erfindung beschrieben. Identische Teile erhalten dieselben Bezugszeichen wie bei der ersten Ausführungsform, auf deren Beschreibung hiermit verwiesen wird. Konstruktiv unterschiedlich, jedoch funktionelle gleichartige Teile erhalten dieselben Bezugszeichen mit einem hochgesetzten Strich. Der zentrale Unterschied gegenüber der ersten Ausführungsform besteht darin, daß die Randbeschnitt-Station 4 den Stationen 5 bis 8 nachgeordnet ist. Entsprechend sind zwei Kameras 40' vor der ersten Station 5 sowie zwischen den Stationen 6 und 7 angeordnet, die, wie bei der ersten Ausführungsform, die Position des Randes 9 der Wellpappebahn 2 erfassen. Die Anordnung der Station 4 hinter den Stationen 5 bis 8 führt dazu, daß die Kameras 40 jeweils einen unbeschnittenen Rand 9 erfassen. Die Anordnung gemäß der zweiten Ausführungsform erfolgt besonders dann, wenn aus betriebstechnischen Gründen der Randbeschnitt nach den Rill-Stationen 5 und 6 und den Längsschneide-Stationen 7 und 8 erfolgen muß.A second embodiment will now be described with reference to Figs described the invention. Identical parts get the same Reference numerals as in the first embodiment, on the description thereof is hereby referred. Structurally different, however Functionally similar parts are given the same reference symbols with a superscript stroke. The main difference from the first embodiment is that the edge trimming station 4 the stations 5 to 8 is subordinate. Accordingly, two cameras 40 'are in front of the first Station 5 and arranged between stations 6 and 7, which, like in the first embodiment, the position of the edge 9 of the corrugated web 2 capture. The arrangement of station 4 behind stations 5 to 8 leads to the cameras 40 each capturing an untrimmed edge 9. The arrangement according to the second embodiment takes place in particular then, for operational reasons, the edge trimming after the creasing stations 5 and 6 and the slitting stations 7 and 8 must be done.

Im folgenden wird unter Bezugnahme auf die Fig. 8 und 9 eine dritte Ausführungsform der Erfindung beschrieben. Identische Teile erhalten dieselben Bezugszeichen wie bei der ersten Ausführungsform, auf deren Beschreibung hiermit verwiesen wird. Konstruktiv unterschiedliche, jedoch funktionell gleichartige Teile erhalten dieselben Bezugszeichen mit zwei hochgesetzten Strichen. Wie bei der ersten Ausführungsform sind die Stationen 4 bis 8 entlang der Transportrichtung 3 hintereinander angeordnet. Der zentrale Unterschied gegenüber der ersten Ausführungsform besteht darin, daß das in Transportrichtung 3 erste Paar von Kameras 40 nicht vorgesehen ist. Die Funktion der ersten beiden Positions-Sensoren wird durch die Stell-Antriebe 12 der Randbeschnitt-Station 4 übernommen. Die Stell-Antriebe 12 sind über Leitungen 42 mit der Steuer-Einrichtung 43 verbunden. Die Steuer-Einrichtung 43 verfügt zu jedem Zeitpunkt über Informationen darüber, an welchen Quer-Positionen die Messer 11 angeordnet sind. Die Quer-Positionen der Messer 11 entsprechen somit den Quer-Positionsdaten yS1 des bei der ersten Ausführungsform vorderen Kamerapaars 40. Aus diesen Quer-Positionsdaten sowie den Quer-Positionsdaten des nachgeordneten Kamerapaars 40" wird durch die Steuer-Einrichtung 43 der Schrägverlauf der Wellpappebahn 2 ermittelt. Vorteilhaft an dieser Ausführungsform ist, daß lediglich zwei Kameras", und nicht vier Kameras 40 wie bei der ersten Ausführungsform, erforderlich sind.A third embodiment of the invention will now be described with reference to FIGS. 8 and 9. Identical parts are given the same reference numerals as in the first embodiment, to the description of which reference is hereby made. Structurally different, but functionally similar parts are given the same reference numerals with two prime lines. As in the first embodiment, the stations 4 to 8 are arranged one behind the other along the transport direction 3. The central difference compared to the first embodiment is that the first pair of cameras 40 is not provided in the direction of transport 3. The function of the first two position sensors is taken over by the actuators 12 of the edge trimming station 4. The actuators 12 are connected to the control device 43 via lines 42. The control device 43 has information at all times about the transverse positions of the knives 11. The transverse positions of the knives 11 thus correspond to the transverse position data y S1 of the front camera pair 40 in the first embodiment. From this transverse position data and the transverse position data of the downstream camera pair 40 ", the control device 43 converts the oblique course of the corrugated cardboard web 2. It is advantageous in this embodiment that only two cameras "and not four cameras 40 as in the first embodiment are required.

Claims (10)

Vorrichtung zur Kompensation des Schräglaufs einer bewegten Materialbahn (2), insbesondere einer Papierbahn in einer Papierverarbeitungsmaschine, wie einer Wellpappemaschine, a) mit einer entlang einer Soll-Transport-Richtung (3) zu transportierenden und entlang einer Ist-Transport-Richtung (46) transportierten Materialbahn (2), b) mit mindestens einer Bearbeitungs-Einheit (4, 5, 6, 7, 8) zur Bearbeitung der Materialbahn (2), wobei die mindestens eine Bearbeitungs-Einheit (4, 5, 6, 7, 8) mindestens ein Bearbeitungs-Werkzeug (11, 24, 25, 26, 27, 35) aufweist, i) das quer zur Soll-Transport-Richtung (3) durch einen Stell-Antrieb (30) verschiebbar ist, ii) das mit der Materialbahn (2) in Eingriff bringbar ist und iii) das an einer Ist-Quer-Position yISTW und an einer Werkzeug-Längs-Position xW angeordnet ist, c) mit einer Schräglauf-Meßeinrichtung zur Bestimmung der Ist-Transport-Richtung (46) der Materialbahn (2), wobei die Schräglauf-Meßeinrichtung aufweist i) mindestens einen an einer ersten Längs-Position XS1 angeordneten ersten Positions-Sensor (40; 40'; 12) zur Bestimmung einer ersten Quer-Position yS1 der Materialbahn (2) und ii) mindestens einen an einer zweiten Längs-Position xS2 angeordneten zweiten Positions-Sensor (40; 40'; 40") zur Bestimmung einer zweiten Quer-Position yS2 der Materialbahn (2), und d) mit einer Steuer-Einrichtung (43), i) welche mit dem mindestens einen ersten Positions-Sensor (40; 40'; 12), dem mindestens einen zweiten Positions-Sensor (40; 40'; 40") und dem mindestens einen Stell-Antrieb (30) in datenübertragender Weise verbunden ist und ii) welche derart ausgebildet ist, daß aus der ersten Quer-Position yS1 und der zweiten Quer-Position yS2 der Materialbahn (2) deren Ist-Transport-Richtung (46) bestimmt wird, hieraus die Soll-Quer-Position ySOLLW des mindestens einen Bearbeitungs-Werkzeugs (11, 24, 25, 26, 27, 35) bestimmt wird und der mindestens eine Stell-Antrieb (12, 30) zur Verschiebung des entsprechenden Bearbeitungs-Werkzeugs (11, 24, 25, 26, 27, 35) in die Soll-Quer-Position ySOLLW angesteuert wird. Device for compensating the skewing of a moving material web (2), in particular a paper web in a paper processing machine, such as a corrugated cardboard machine, a) with a material web (2) to be transported along a target transport direction (3) and transported along an actual transport direction (46), b) with at least one processing unit (4, 5, 6, 7, 8) for processing the material web (2), the at least one processing unit (4, 5, 6, 7, 8) at least one processing tool (11, 24, 25, 26, 27, 35), i) which can be displaced transversely to the desired transport direction (3) by means of an actuating drive (30), ii) which can be brought into engagement with the material web (2) and iii) which is arranged at an actual transverse position yIST W and at a longitudinal tool position x W , c) with a skew measuring device for determining the actual transport direction (46) of the material web (2), the skew measuring device having i) at least one first position sensor (40; 40 '; 12) arranged at a first longitudinal position X S1 for determining a first transverse position y S1 of the material web (2) and ii) at least one second position sensor (40; 40 '; 40 ") arranged at a second longitudinal position x S2 for determining a second transverse position y S2 of the material web (2), and d) with a control device (43), i) which is connected to the at least one first position sensor (40; 40 '; 12), the at least one second position sensor (40; 40'; 40 ") and the at least one actuating drive (30) in a data-transmitting manner is and ii) which is designed such that the actual transport direction (46) is determined from the first transverse position y S1 and the second transverse position y S2 of the material web (2), from this the desired transverse position ySOLL W of the at least one machining tool (11, 24, 25, 26, 27, 35) is determined and the at least one actuator (12, 30) for displacing the corresponding machining tool (11, 24, 25, 26, 27 , 35) is driven into the desired transverse position ySOLL W. Vorrichtung gemäß Anspruch 1, dadurch gekennzeichnet, daß die Materialbahn (2) zwei seitliche Ränder (9) aufweist.Device according to claim 1, characterized in that the material web (2) has two lateral edges (9). Vorrichtung gemäß Anspruch 2, dadurch gekennzeichnet, daß die Positions-Sensoren (40; 40'; 12, 40") derart ausgebildet sind, daß sie die Quer-Position mindestens eines Randes (9) der Materialbahn (2) ermitteln.Apparatus according to claim 2, characterized in that the position sensors (40; 40 '; 12, 40 ") are designed such that they determine the transverse position of at least one edge (9) of the material web (2). Vorrichtung gemäß Anspruch 3, dadurch gekennzeichnet, daß die Positions-Sensoren (40; 40'; 12, 40") die Quer-Position beider Ränder (9) der Materialbahn (2) erfassen.Device according to claim 3, characterized in that the position sensors (40; 40 '; 12, 40 ") detect the transverse position of both edges (9) of the material web (2). Vorrichtung gemäß einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß der Stell-Antrieb (30) eine antreibbare Gewindespindel (29) aufweist. Device according to one of the preceding claims, characterized in that the actuating drive (30) has a drivable threaded spindle (29). Vorrichtung gemäß Anspruch 5, dadurch gekennzeichnet, daß das mindestens eine Bearbeitungs-Werkzeug (11, 24, 25, 26, 27, 35) zur Querverschiebung desselben an die Gewindespindel (29) kuppelbar ist.Device according to claim 5, characterized in that the at least one machining tool (11, 24, 25, 26, 27, 35) can be coupled to the threaded spindle (29) for transverse displacement thereof. Vorrichtung gemäß Anspruch 2, dadurch gekennzeichnet, daß eine Bearbeitungs-Einheit (4) als Einheit zum Beschneiden der Ränder (9) der Materialbahn (2) ausgebildet ist.Apparatus according to claim 2, characterized in that a processing unit (4) is designed as a unit for trimming the edges (9) of the material web (2). Vorrichtung gemäß Anspruch 7, dadurch gekennzeichnet, daß die Einheit zum Beschneiden der Ränder (9) Messer (11) aufweist, die durch einen Messer-Stell-Antrieb (12) in eine vorbestimmte Messer-Quer-Position yM positionierbar sind.Apparatus according to claim 7, characterized in that the unit for trimming the edges (9) has knives (11) which can be positioned in a predetermined transverse knife position y M by a knife actuator (12). Vorrichtung gemäß Anspruch 8, dadurch gekennzeichnet, daß der Messer-Stell-Antrieb (12) den mindestens einen ersten Positions-Sensors (12) bildet.Device according to claim 8, characterized in that the knife actuating drive (12) forms the at least one first position sensor (12). Vorrichtung gemäß einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß der mindestens eine erste Positions-Sensor (40; 40'; 12) und der mindestens eine zweite Positions-Sensor (40; 40'; 40") an verschiedenen Längs-Positionen xS1 bzw. xS2der Materialbahn (2) angeordnet sind.Device according to one of the preceding claims, characterized in that the at least one first position sensor (40; 40 '; 12) and the at least one second position sensor (40; 40'; 40 ") at different longitudinal positions x S1 or x S2 of the material web (2) are arranged.
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CN103171918A (en) * 2013-03-01 2013-06-26 东莞科视自动化科技有限公司 Method and device for correcting composite type fully automatic platform bridge deflection
CN103171918B (en) * 2013-03-01 2015-10-28 东莞科视自动化科技有限公司 A kind of combined type full automaticity overline bridge method for correcting error and equipment
WO2015184081A1 (en) * 2014-05-29 2015-12-03 Corning Incorporated Apparatuses for steering flexible glass webs and methods for using the same
CN106586665A (en) * 2016-12-02 2017-04-26 宝钢工程技术集团有限公司 Device and method for detecting folding head of steel coil
CN110549686A (en) * 2018-05-30 2019-12-10 青岛开拓数控设备有限公司 Corrugated container board automated inspection deviation correcting device, rip cutting wire pressing machine and production line
CN113023443A (en) * 2021-03-02 2021-06-25 福建钰辰微电子有限公司 Coiled material mechanism of rectifying for flexible circuit board production

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DE10131833A1 (en) 2003-01-16
EP1270473A3 (en) 2005-09-14

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