EP1582490B1 - Device for feeding a stream of overlapping sheets - Google Patents

Device for feeding a stream of overlapping sheets Download PDF

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Publication number
EP1582490B1
EP1582490B1 EP05004412A EP05004412A EP1582490B1 EP 1582490 B1 EP1582490 B1 EP 1582490B1 EP 05004412 A EP05004412 A EP 05004412A EP 05004412 A EP05004412 A EP 05004412A EP 1582490 B1 EP1582490 B1 EP 1582490B1
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EP
European Patent Office
Prior art keywords
sheet
suction
last
belt
last sheet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
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EP05004412A
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German (de)
French (fr)
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EP1582490A1 (en
Inventor
Arndt Jentzsch
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Koenig and Bauer AG
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Koenig and Bauer AG
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Publication of EP1582490A1 publication Critical patent/EP1582490A1/en
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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
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/24—Feeding articles in overlapping streams, i.e. by separation of articles from a pile
    • 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
    • B65H11/002—Feed tables incorporating transport belts
    • B65H11/005—Suction belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/30—Suction means
    • B65H2406/32—Suction belts
    • B65H2406/321—Suction belts integral in feed table
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2513/00—Dynamic entities; Timing aspects
    • B65H2513/50—Timing
    • B65H2513/512—Starting; Stopping

Definitions

  • the invention relates to a device for feeding a shingled sheet flow from a stack of sheets of a sheet feeder to a feed table of a sheet-processing machine according to the preamble of claim 1.
  • the sheets separated by a sheet feeder from a stack of sheets are transported as a shingled stream of sheets on a suction belts having belt table, there detected by the suction belts and transported to the feed table.
  • the suction belts are subjected to negative pressure in the area of sheet transfer by a suction box facing the sheet feeder, while in the region of the sheet transfer to the feed table, the suction belts are subjected to negative pressure by a suction box facing the machine.
  • the respective foremost arc of the sheet flow is performed on the feed table with the leading edge against leading brands and so aligned to the leading edge.
  • the bow will be e.g. aligned to the side edge.
  • This device is not applicable in the thin pressure range, since a defined guidance of the last sheet is not given to the leading brands.
  • the object of the invention is to modify a generic device so that regardless of the material reaching for processing and the last arc of a sheet flow is easily aligned.
  • the solution according to the invention makes it possible to create the last sheet of a scaly stream of sheets, independently of the material properties, defined at the front marks. This ensures that the entire material to be processed can be processed trouble-free.
  • a belt table 1 with a downstream feed table 2 is shown schematically in side view.
  • the belt table 1 has at least one suction belt 3, which is guided over an upper deflecting roller 4 and a lower deflecting roller 5 and tensioned by means of two rollers 6.
  • a sheet feeder not shown, facing suction box 7 and a lower, also not shown bow-processing machine facing suction box 8 is arranged.
  • the upper suction box 7 is connected via a suction nozzle 9 with a first vacuum source, not shown, and the lower suction box 8 via a suction nozzle 10 with a second vacuum source, not shown.
  • a suction nozzle 10 opening or closing actuator 11 is arranged at the lower suction box 8, a ventilation flap 12 is further provided, which can be actuated by means of an adjusting device 13.
  • the belt table 1 is followed by the feed table 2, of which a table top 14 is shown. In your position on the feed table 2 leading marks 15 are shown.
  • the front marks 15 can be spent in the working cycle from the position on the feed table 2 in a pivoted-away from the feed table 2 position.
  • a double-sheet control 16 is further provided, while the upper guide roller 4 is assigned a cyclically operating swab roller 23.
  • the drive of the suction belt 3 in a sheet transport direction 25 is effected by a drive unit 20 assigned to the upper deflection roller 5.
  • the drive unit 20 is connected to a control unit 21 which is connected to the setting unit 11, the setting device 13 and the double-sheet control 16 is linked. Also connected to the control unit 21 are the machine controller 22 and an input unit 24.
  • the sheets separated by the sheet feeder are fed to the belt table 1 under suction and are picked up by the suction belt 3, supported by the swab roller 23 guided in the working cycle against the upper deflection roller 4.
  • the holding force acting on the sheet is realized by the negative pressure built up in the upper suction box 7 by means of the vacuum source connected to the suction nozzle 9.
  • the force acting on the sheet 17 to be aligned, initiated by means of the pressure prevailing in the lower suction box 8 negative pressure holding force is minimized by the underlap of the subsequent sheet 18 or completely canceled.
  • the sheet 17 to be aligned can be easily applied to the front marks 15 and subsequently also aligned, if necessary, according to the side edge.
  • the sheet 17 is withdrawn by means not shown and transported to the downstream sheet processing machine.
  • the follower sheet 18 is conveyed in the sheet transport direction 25.
  • double sheet control 16 If a single arc is detected by the double sheet control 16 as a function of the position on the belt table 1 and the stagger spacing of the undercut sheet flow instead of a double or triple arc, this is detected as the last arc of the arc current and generates a signal. It is advantageous to assign the double-sheet control 16 to the belt table 1 in such a way that it detects the sheet 17 / subsequent sheet 18 or another sheet to be aligned with the underlap.
  • the signal generated by the double-sheet control 16 is supplied to the control unit 21.
  • the last sheet 19 is detected and found in the control unit 21, the number of located between the front lays 15 and the last sheet 19 bow or the number of work cycles, which must be realized until the last sheet 19 rests as bow 17 ausuzinder to the front marks 15.
  • the sheet designated in the figurative representation as a follower sheet 18 is identified as the last sheet 19, the follower sheet 18 / last sheet 19 is transported against the leading marks 15 during the removal of the sheet 17 to be aligned by means of a sheet feeder, not shown.
  • the drive unit 20 is stopped, and thus the movement of the suction belt 3 is interrupted when the leading edge of the determined as last sheet 19 subsequent sheet 18 applies to the front marks 15.
  • the drive unit 20 can be stopped so that the last sheet 19 applies with a lower suppression of the front marks 15. Simultaneously or immediately before the application or within the power stroke, in which the transport of the last sheet 19 is carried out, the vacuum supply to the lower suction box 8 is interrupted by the control unit 21 by means of the adjusting unit 11 and the venting flap 12 is opened by the adjusting device 13. Thus, the last sheet 19 can be aligned to the side edge and subsequently withdrawn.
  • the interruption of the vacuum supply by means of the adjusting unit 11 to the lower suction box 8 and the opening of the venting flap 12 by the adjusting device 13 is arbitrarily within the working cycle, in which the last sheet 19 is transported to the front lays 15, via the input unit 24 possible.
  • the release of the last sheet 19 can be adjusted depending on the material to be processed or on the design of the sheet system. So, for example, in a sheet feeder where side edge alignment is provided on the feed table 2 after alignment with respect to the leading edge, the ventilation of the lower suction box 8 is earlier than in a sheet feeder with side edge orientation on a downstream cylinder.
  • the last bend 19 and its position on the belt table are detected by the double-sheet control 16. It is also possible to detect the final arc 19 by additional means. In addition, the last sheet 19 and thus the sheet located on the feed table 1 / belt table 2 before this can be detected by the machine control.

Description

Die Erfindung betrifft eine Vorrichtung zum Zuführen eines geschuppten Bogenstromes von einem Bogenstapel eines Bogenanlegers zu einem Anlegtisch einer bogenverarbeitenden Maschine gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a device for feeding a shingled sheet flow from a stack of sheets of a sheet feeder to a feed table of a sheet-processing machine according to the preamble of claim 1.

Derartige Vorrichtungen sind allgemein bekannt. Die durch einen Bogenanleger von einem Bogenstapel vereinzelten Bogen werden als geschuppter Bogenstrom auf einem Saugbänder aufweisenden Bändertisch transportiert, dort von den Saugbändern erfasst und zum Anlegtisch transportiert. Dabei werden die Saugbänder im Bereich der Bogenübernahme von einem dem Bogenanleger zugewandten Saugkasten unterdruckbeaufschlagt, während im Bereich der Bogenübergabe auf den Anlegtisch die Saugbänder durch einen der Maschine zugewandten Saugkasten mit Unterdruck beaufschlagt werden. Der jeweils vorderste Bogen des Bogenstroms wird auf dem Anlegtisch mit der Vorderkante gegen Vordermarken geführt und so nach der Vorderkante ausgerichtet. Nachfolgend wird der Bogen z.B. nach der Seitenkante ausgerichtet. Beim Ausrichten des jeweils vordersten Bogens darf dieser durch die Saugbänder nur mit einer solchen Haltekraft geführt werden, dass beim Anlegen des Bogens an die Vordermarken die Vorderkante nicht beschädigt wird und eine Seitenausrichtung problemlos möglich ist. Das wird dadurch ermöglicht, dass durch den unterschuppt angeordneten Folgebogen die Saugbänder vollständig oder nahe vollständig abgedeckt werden, so dass der auszurichtende Bogen nur mit einer geringen Haltekraft im Übergabebereich geführt wird. Fehlt ein Folgebogen, wenn z.B. der Bogenstrom unterbrochen wird, wirkt auf den letzten auszurichtenden Bogen eine solche Haltkraft, dass bei der Verarbeitung von Papier die Gefahr einer Beschädigung der Bogenvorderkante besteht bzw. eine exakte Seitenausrichtung nicht möglich ist.Such devices are well known. The sheets separated by a sheet feeder from a stack of sheets are transported as a shingled stream of sheets on a suction belts having belt table, there detected by the suction belts and transported to the feed table. In this case, the suction belts are subjected to negative pressure in the area of sheet transfer by a suction box facing the sheet feeder, while in the region of the sheet transfer to the feed table, the suction belts are subjected to negative pressure by a suction box facing the machine. The respective foremost arc of the sheet flow is performed on the feed table with the leading edge against leading brands and so aligned to the leading edge. Hereinafter, the bow will be e.g. aligned to the side edge. When aligning the respective foremost sheet this may be performed by the suction belts only with such a holding force that when creating the sheet to the front brands, the leading edge is not damaged and a page orientation is easily possible. This is made possible in that the suction belts are completely or almost completely covered by the underflow arranged following sheet, so that the sheet to be aligned is guided only with a small holding force in the transfer area. If a follow-up arc is missing, e.g. the sheet flow is interrupted acts on the last sheet to be aligned such a holding force that there is a risk of damage to the sheet leading edge in the processing of paper or an exact page orientation is not possible.

Um diesen Nachteil zu beseitigen, wird in der EP 0 554 774 B1 vorgeschlagen, die Zufuhr des letzten Bogens des Bogenstroms zu erfassen. Nachdem der vorletzte Bogen abgezogen worden ist, wird die Unterdruckzufuhr zum der Maschine zugewandten Saugkasten unterbrochen und dieser mit einer Überdrückquelle verbunden.To eliminate this disadvantage, is in the EP 0 554 774 B1 proposed to detect the supply of the last arc of the arc current. After the penultimate sheet has been withdrawn, the vacuum supply to the machine facing suction box is interrupted and connected to an overpressure source.

Diese Vorrichtung ist im Dünndruckbereich nicht anwendbar, da eine definierte Führung des letzten Bogens zu den Vordermarken nicht gegeben ist.This device is not applicable in the thin pressure range, since a defined guidance of the last sheet is not given to the leading brands.

Aus der DE 44 42 629 A1 ist ein Saugbändertisch bekannt, dem zum Transport der Bogen drei Saugkammern zugeordnet sind. Zur seitlichen Ausrichtung an den Vordermarken wird die Haltekraft im Bereich der den Vordermarken zugewandten Saugkammer vermindert. Mittels eines Schleberventils wird atmosphärischer Druck über eine Öffnung in die Saugkammer geleitet. Das bewirkt, dass das Druckniveau in dieser Saugkammer gegenüber den anderen Saugkammern verändert wird, d. h. der Unterdruck in dieser Saugkammer ist kleiner als in den anderen Saugkammern. Damit auch der letzte Bogen, der mit seiner gesamten Fläche auf dem Saugbändertisch aufliegt und daher entsprechend stark angesaugt wird, im Bereich der Vordermarken seitlich ausgerichtet werden kann, werden die Saugluftquellen abgeschaltet. Es können gegebenenfalls auch Mittel zur Belüftung der der letzten Saugkammer vorgeordneten Saugkammer vorgesehen werden. Daraus folgt, dass nur im Bereich der beiden letzten Saugkammern noch ein ausreichendes Unterdruckniveau ansteht, welches bewirkt, dass der Bogen während der seitlichen Ausrichtung durch den Unterdruck an das Saugband angelegt wird und einen Vorschub gegen die Vordermarken erfährt.From the DE 44 42 629 A1 is a Saugbändertisch known, which are assigned to transport the sheet three suction chambers. For lateral alignment at the front marks the holding force in the region of the front mark facing suction chamber is reduced. By means of a Schleberventils atmospheric pressure is passed through an opening in the suction chamber. This causes the pressure level in this suction chamber to be changed relative to the other suction chambers, ie the negative pressure in this suction chamber is smaller than in the other suction chambers. So that the last sheet, which rests with its entire surface on the suction belt table and therefore is sucked in accordance strong, can be aligned laterally in the front brands, the Saugluftquellen be switched off. If appropriate, it is also possible to provide means for ventilating the suction chamber arranged upstream of the last suction chamber. It follows that only in the last two suction chambers a sufficient level of vacuum is still present, which causes the sheet is applied during the lateral alignment by the negative pressure to the suction belt and undergoes a feed against the leading brands.

In der US-A-4,651,984 wird eine Einrichtung vorgestellt, bei der ein Saugbändertisch mit nur einem Saugkasten vorgesehen ist. Vor dem Einlaufen des letzten Bogens auf den Saugbändertisch wird der Saugluftstrom unterbrochen. Durch das relativ große Volumen im Saugkasten baut sich der Unterdruck nur langsam ab. Er ist dann weit genug abgebaut, wenn der letzte Bogen im Bereich der Vordermarken angekommen ist. Der Unterdruck im Saugkasten ist dann so gering, dass die an der Unterseite des Bogens angreifenden Haltekräfte das seitliche Ziehen der Seltenmarke nicht mehr behindern können.In the US-A-4,651,984 a device is presented in which a suction belt table is provided with only a suction box. Before entering the last sheet on the Saugbändertisch the suction air flow is interrupted. Due to the relatively large volume in the suction box, the negative pressure builds up only slowly. He is then dismantled far enough, when the last sheet has arrived in the range of the leading brands. The negative pressure in the suction box is then so small that the forces acting on the underside of the sheet holding forces can no longer hinder the lateral pulling of the rare brand.

Bei den beiden letztgenannten Lösungen Ist es nachteilig, dass die auf den letzten Bogen wirkenden Haltekräfte nur unzureichend einstellbar sind.In the latter two solutions, it is disadvantageous that the holding forces acting on the last sheet are insufficiently adjustable.

Aufgabe der Erfindung ist es, eine gattungsgemäße Vorrichtung so zu verändern, dass unabhängig vom zur Verarbeitung gelangenden Material auch der letzte Bogen eines Bogenstroms problemlos ausgerichtet wird.The object of the invention is to modify a generic device so that regardless of the material reaching for processing and the last arc of a sheet flow is easily aligned.

Erfindungsgemäß wird die Aufgabe durch eine Vorrichtung nach den Merkmalen des Anspruchs 1 gelöst.According to the invention the object is achieved by a device according to the features of claim 1.

Die erfindungsgemäße Lösung ermöglicht es, den letzten Bogen eines geschuppten Bogenstromes unabhängig von der Materialbeschaffenheit definiert an den Vordermarken anzulegen. Damit wird sichergestellt, dass das gesamte zur Verarbeitung gelangende Material störungsfrei verarbeitet werden kann.The solution according to the invention makes it possible to create the last sheet of a scaly stream of sheets, independently of the material properties, defined at the front marks. This ensures that the entire material to be processed can be processed trouble-free.

An einem Ausführungsbeispiel wird die Erfindung näher erläutert. In der zugehörigen Zeichnung ist ein Bändertisch 1 mit einem nachgeordneten Anlegtisch 2 schematisch in Seitenansicht dargestellt. Der Bändertisch 1 weist mindestens ein Saugband 3 auf, das über eine obere Umlenkwalze 4 und eine untere Umlenkwalze 5 geführt sowie mittels zweier Walzen 6 gespannt wird. Im Bändertisch 1 ist ein oberer, einem nicht dargestellten Bogenanleger zugewandter Saugkasten 7 und ein unterer, einer ebenfalls nicht dargestellten bogenverarbeitenden Maschine zugewandter Saugkasten 8 angeordnet. Zwischen den Saugkästen 7, 8 können weitere Saugkästen angeordnet sein. Der obere Saugkasten 7 ist über einen Saugstutzen 9 mit einer nicht dargestellten ersten Unterdruckquelle und der untere Saugkasten 8 über einen Saugstutzen 10 mit einer nicht dargestellten zweiten Unterdruckquelle verbunden. Am Saugstutzen 10 ist eine den Saugstutzen 10 öffnende oder schließende Stelleinheit 11 angeordnet. Am unteren Saugkasten 8 ist weiterhin eine Entlüftungsklappe 12 vorgesehen, die mittels einer Stelleinrichtung 13 betätigt werden kann.In one embodiment, the invention is explained in detail. In the accompanying drawing, a belt table 1 with a downstream feed table 2 is shown schematically in side view. The belt table 1 has at least one suction belt 3, which is guided over an upper deflecting roller 4 and a lower deflecting roller 5 and tensioned by means of two rollers 6. In the belt table 1 is an upper, a sheet feeder, not shown, facing suction box 7 and a lower, also not shown bow-processing machine facing suction box 8 is arranged. Between the suction boxes 7, 8 more suction boxes can be arranged. The upper suction box 7 is connected via a suction nozzle 9 with a first vacuum source, not shown, and the lower suction box 8 via a suction nozzle 10 with a second vacuum source, not shown. At the suction nozzle 10 a suction nozzle 10 opening or closing actuator 11 is arranged. At the lower suction box 8, a ventilation flap 12 is further provided, which can be actuated by means of an adjusting device 13.

Dem Bändertisch 1 ist der Anlegtisch 2 nachgeordnet, von dem ein Tischblech 14 gezeigt ist. In Ihrer Position am Anlegtisch 2 sind Vordermarken 15 dargestellt. Die Vordermarken 15 können im Arbeitstakt aus der Position am Anlegtisch 2 in eine vom Anlegtisch 2 abgeschwenkte Position verbracht werden. An den Vordermarken 15 anliegend, ist ein auszurichtender Bogen 17, dem ein Folgebogen 18 als Letztbogen 19 nachgeordnet ist, dargestellt. Vor der unteren Umlenkwalze 5 ist weiterhin eine Doppelbogenkontrolle 16 vorgesehen, während der oberen Umlenkwalze 4 eine taktweise arbeitende Tupferwalze 23 zugeordnet ist. Der Antrieb des Saugbandes 3 in eine Bogentransportrichtung 25 erfolgt durch eine der oberen Umlenkwalze 5 zugeordnete Antriebseinheit 20. Die Antriebseinheit 20 ist verbunden mit einer Steuereinheit 21, die mit der Stelleinheit 11, der Stelleinrichtung 13 und der Doppelbogenkontrolle 16 verknüpft ist. Mit der Steuereinheit 21 sind auch die Maschinensteuerung 22 und eine Eingabeeinheit 24 verbunden.The belt table 1 is followed by the feed table 2, of which a table top 14 is shown. In your position on the feed table 2 leading marks 15 are shown. The front marks 15 can be spent in the working cycle from the position on the feed table 2 in a pivoted-away from the feed table 2 position. Adjacent to the front marks 15, a sheet 17 to be aligned, to which a following sheet 18 is arranged downstream as the last sheet 19, is shown. Before the lower guide roller 5, a double-sheet control 16 is further provided, while the upper guide roller 4 is assigned a cyclically operating swab roller 23. The drive of the suction belt 3 in a sheet transport direction 25 is effected by a drive unit 20 assigned to the upper deflection roller 5. The drive unit 20 is connected to a control unit 21 which is connected to the setting unit 11, the setting device 13 and the double-sheet control 16 is linked. Also connected to the control unit 21 are the machine controller 22 and an input unit 24.

Die vom Bogenanleger vereinzelten Bogen werden unterschuppt dem Bändertisch 1 zugeführt und vom Saugband 3, unterstützt durch die im Arbeitstakt gegen die obere Umlenkwalze 4 geführte Tupferwalze 23, erfasst. Die auf die Bogen wirkende Haltekraft wird realisiert durch den im oberen Saugkasten 7 mittels der mit dem Saugstutzen 9 verbundenen Unterdruckquelle aufgebauten Unterdruck. Die Bogen werden als Bogenstrom von dem Saugband 3, angetrieben durch die Antriebseinheit 20, in Bogentransportrichtung 25 gefördert, wobei der jeweils vorderste Bogen des Bogenstromes als auszurichtender Bogen 17 auf den Anlegtisch 2 und mit der Vorderkante gegen die Vordermarken 15 transportiert wird. Dabei wird die auf den auszurichtenden Bogen 17 wirkende, mit Hilfe des im unteren Saugkastens 8 herrschenden Unterdrucks initiierte Haltekraft durch die Unterlappung des Folgebogens 18 minimiert oder vollständig aufgehoben. Dadurch kann der auszurichtende Bogen 17 problemlos an den Vordermarken 15 angelegt und nachfolgend ebenso ggf. nach der Seitenkante ausgerichtet werden. Nach dem Ausrichten wird der Bogen 17 durch nicht dargestellte Mittel abgezogen und in die nachgeordnete bogenverarbeitende Maschine transportiert. Gleichzeitig mit dem Abziehen des auszurichtenden Bogens 17 wird der Folgebogen 18 in Bogentransportrichtung 25 gefördert.The sheets separated by the sheet feeder are fed to the belt table 1 under suction and are picked up by the suction belt 3, supported by the swab roller 23 guided in the working cycle against the upper deflection roller 4. The holding force acting on the sheet is realized by the negative pressure built up in the upper suction box 7 by means of the vacuum source connected to the suction nozzle 9. The sheets are conveyed as a sheet flow from the suction belt 3, driven by the drive unit 20, in the sheet transport direction 25, wherein the respective foremost sheet of the sheet flow is transported as bow 17 ausurichtender on the feed table 2 and with the front edge against the front marks 15. In this case, the force acting on the sheet 17 to be aligned, initiated by means of the pressure prevailing in the lower suction box 8 negative pressure holding force is minimized by the underlap of the subsequent sheet 18 or completely canceled. As a result, the sheet 17 to be aligned can be easily applied to the front marks 15 and subsequently also aligned, if necessary, according to the side edge. After alignment, the sheet 17 is withdrawn by means not shown and transported to the downstream sheet processing machine. Simultaneously with the removal of the sheet 17 to be aligned, the follower sheet 18 is conveyed in the sheet transport direction 25.

Wird von der Doppelbogenkontrolle 16 in Abhängigkeit von der Position auf dem Bändertisch 1 sowie des Staffelabstandes des unterlappten Bogenstroms statt eines Doppel- oder Dreifachbogens ein Einfachbogen detektiert, so wird dieser als letzter Bogen des Bogenstromes erkannt und ein Signal generiert. Dabei ist es vorteilhaft, die Doppelbogenkontrolle 16 so dem Bändertisch 1 zuzuordnen, dass diese die Unterlappung auszurichtender Bogen 17/Folgebogen 18 bzw. eines weiteren Bogens erfasst.If a single arc is detected by the double sheet control 16 as a function of the position on the belt table 1 and the stagger spacing of the undercut sheet flow instead of a double or triple arc, this is detected as the last arc of the arc current and generates a signal. It is advantageous to assign the double-sheet control 16 to the belt table 1 in such a way that it detects the sheet 17 / subsequent sheet 18 or another sheet to be aligned with the underlap.

Das von der Doppelbogenkontrolle 16 generierte Signal wird der Steuereinheit 21 zugeführt. Damit wird der Letztbogen 19 erkannt und in der Steuereinheit 21 die Anzahl der zwischen den Vordermarken 15 und dem Letztbogen 19 befindlichen Bogen bzw. die Anzahl Arbeitstakte festgestellt, die realisiert werden müssen, bis der Letztbogen 19 als auszurichtender Bogen 17 an den Vordermarken 15 anliegt. Wird der in der figürlichen Darstellung als Folgebogen 18 bezeichnete Bogen als Letztbogen 19 festgestellt, wird während des Abziehens des auszurichtenden Bogens 17 mittels einer nicht dargestellten Bogenzuführeinrichtung der Folgebogen 18/Letztbogen 19 gegen die Vordermarken 15 transportiert. Dabei wird, gesteuert durch die Steuereinheit 21, die Antriebseinheit 20 gestoppt und damit die Bewegung des Saugbandes 3 unterbrochen, wenn die Vorderkante des als Letztbogen 19 ermittelten Folgebogens 18 an den Vordermarken 15 anlegt. Dabei kann die Antriebseinheit 20 so gestoppt werden, dass der Letztbogen 19 mit einer geringeren Überdrückung an den Vordermarken 15 anlegt. Gleichzeitig oder unmittelbar vor dem Anlegen bzw. innerhalb des Arbeitstaktes, in dem der Transport des Letztbogens 19 erfolgt, wird über die Steuereinheit 21 die Unterdruckzufuhr zum unteren Saugkasten 8 mittels der Stelleinheit 11 unterbrochen und die Entlüftungsklappe 12 durch die Stelleinrichtung 13 geöffnet. Damit kann der Letztbogen 19 nach der Seitenkante ausgerichtet und nachfolgend abgezogen werden.The signal generated by the double-sheet control 16 is supplied to the control unit 21. Thus, the last sheet 19 is detected and found in the control unit 21, the number of located between the front lays 15 and the last sheet 19 bow or the number of work cycles, which must be realized until the last sheet 19 rests as bow 17 ausurichtender to the front marks 15. If the sheet designated in the figurative representation as a follower sheet 18 is identified as the last sheet 19, the follower sheet 18 / last sheet 19 is transported against the leading marks 15 during the removal of the sheet 17 to be aligned by means of a sheet feeder, not shown. In this case, controlled by the control unit 21, the drive unit 20 is stopped, and thus the movement of the suction belt 3 is interrupted when the leading edge of the determined as last sheet 19 subsequent sheet 18 applies to the front marks 15. In this case, the drive unit 20 can be stopped so that the last sheet 19 applies with a lower suppression of the front marks 15. Simultaneously or immediately before the application or within the power stroke, in which the transport of the last sheet 19 is carried out, the vacuum supply to the lower suction box 8 is interrupted by the control unit 21 by means of the adjusting unit 11 and the venting flap 12 is opened by the adjusting device 13. Thus, the last sheet 19 can be aligned to the side edge and subsequently withdrawn.

Das Unterbrechen der Unterdruckzufuhr mittels der Stelleinheit 11 zum unteren Saugkasten 8 und das öffnen der Entlüftungsklappe 12 durch die Stelleinrichtung 13 ist beliebig innerhalb des Arbeitstaktes, in dem der Letztbogen 19 zu den Vordermarken 15 transportiert wird, über die Eingabeeinheit 24 möglich. Damit kann die Freigabe des Letztbogens 19 in Abhängigkeit vom zur Verarbeitung gelangenden Material oder von der Ausgestaltung der Bogenanlage angepasst werden. So muss z.B. in einer Bogenanlage, bei der nach dem Ausrichten bezüglich der Vorderkante eine Seitenkantenausrichtung auf dem Anlegtisch 2 vorgesehen ist, die Belüftung des unteren Saugkastens 8 früher erfolgen als bei einer Bogenanlage mit einer Seitenkantenausrichtung auf einem nachgeordneten Zylinder.The interruption of the vacuum supply by means of the adjusting unit 11 to the lower suction box 8 and the opening of the venting flap 12 by the adjusting device 13 is arbitrarily within the working cycle, in which the last sheet 19 is transported to the front lays 15, via the input unit 24 possible. Thus, the release of the last sheet 19 can be adjusted depending on the material to be processed or on the design of the sheet system. So, for example, in a sheet feeder where side edge alignment is provided on the feed table 2 after alignment with respect to the leading edge, the ventilation of the lower suction box 8 is earlier than in a sheet feeder with side edge orientation on a downstream cylinder.

Im Ausführungsbeispiel wird beschrieben, dass der Letztbogen 19 sowie seine Position auf dem Bändertisch durch die Doppelbogenkontrolle 16 erfasst wird. Es ist auch möglich, durch zusätzliche Mittel den Letztbogen 19 zu erfassen. Außerdem können die Letztbogen 19 und damit die auf dem Anlegtisch 1/Bändertisch 2 vor diesem befindlichen Bogen durch die Maschinensteuerung erfasst werden.In the exemplary embodiment, it is described that the last bend 19 and its position on the belt table are detected by the double-sheet control 16. It is also possible to detect the final arc 19 by additional means. In addition, the last sheet 19 and thus the sheet located on the feed table 1 / belt table 2 before this can be detected by the machine control.

Aufstellung der verwendeten BezugszeichenList of used reference numbers

11
Bändertischbelt table
22
Anlegtischfeed table
33
Saugbandsuction belt
44
obere Umlenkwalzeupper guide roller
55
untere Umlenkwalzelower deflection roller
66
Walzeroller
77
oberer Saugkastenupper suction box
88th
unterer Saugkastenlower suction box
99
Saugstutzensuction
1010
Saugstutzensuction
1111
Stelleinheitactuator
1212
Entlüftungsklappevent flap
1313
Stelleinrichtungsetting device
1414
Tischblechtable sheet
1515
Vordermarkefront lay
1616
DoppelbogenkontrolleDouble sheet control
1717
Auszurichtender BogenBow to be straightened
1818
Folgebogenepisode arc
1919
Letztbogenlast bow
2020
Antriebseinheitdrive unit
2121
Steuereinheitcontrol unit
2222
Maschinensteuerungmachine control
2323
Tupferwalzeswab roll
2424
Eingabeeinheitinput unit
2525
BogentransportrichtungSheet transport direction

Claims (9)

  1. Device for feeding an imbricated sheet flow from a sheet stack of a sheet feeder to a feed table (2), which is equipped with front marks, of a sheet processing machine, with a belt table (1) provided with at least one suction belt (3), which is driven to circulate and guides the sheets and which is disposed in operative connection with at least two suction boxes (7; 8) which are arranged in series and can be loaded independently of one another with suction air by way of a respective suction air feed (9, 10), as well as with means for detection and recognition of a last sheet (19) of the sheet flow, with a control unit (21) and with a drive unit (20) associated with the suction belt (3), wherein a ventilating device is associated with the lower suction box (8), characterised in that the control unit (21) controls the drive unit (20) and means for stopping the drive unit (20) of the suction belt (3) after detection and recognition of the last sheet (19) of the sheet flow and after laying of the last sheet (19) by the front edge against the front marks (15) are provided.
  2. Device according to claim 1, characterised in that the suction air feed to the lower suction box (8) can be regulated by means of a setting unit (11).
  3. Device according to claim 2, characterised in that the setting unit (11) is actuable during the working cycle, which leads the last sheet (19) to the front marks (15), for interrupting the suction air feed.
  4. Device according to claim 1, characterised in that a ventilating flap (12) actuable by a setting device (13) is provided as ventilating device.
  5. Device according to claims 2 and 4, characterised in that both the actuation of the setting unit (11) and the actuation of the setting device (13) are possible within one working cycle.
  6. Device according to claim 1, characterised in that a double sheet checking device (16) is provided as means for detecting and recognising the last sheet (19).
  7. Device according to claim 6, characterised in that a signal can be generated and fed to the control unit (21) in the detection of the last sheet (19) by the double sheet checking device (16).
  8. Device according to preceding claims 2 and 4, characterised in that the control unit (21) is connected with the setting unit (11) and the setting device (13).
  9. Device according to claim 1, characterised in that laying of the last sheet (19) is carried out with a slight excess pressing.
EP05004412A 2004-03-30 2005-03-01 Device for feeding a stream of overlapping sheets Expired - Fee Related EP1582490B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004015335 2004-03-30
DE102004015335A DE102004015335A1 (en) 2004-03-30 2004-03-30 Apparatus for feeding a scaly arc stream

Publications (2)

Publication Number Publication Date
EP1582490A1 EP1582490A1 (en) 2005-10-05
EP1582490B1 true EP1582490B1 (en) 2008-05-07

Family

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Application Number Title Priority Date Filing Date
EP05004412A Expired - Fee Related EP1582490B1 (en) 2004-03-30 2005-03-01 Device for feeding a stream of overlapping sheets

Country Status (3)

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US (1) US7401777B2 (en)
EP (1) EP1582490B1 (en)
DE (2) DE102004015335A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005057361A1 (en) * 2005-12-01 2007-06-06 Koenig & Bauer Ag Under-lapped sheet flow conveying device, has suction belt drivable in speed characteristics during transport of last sheet of sequence of sheets on feed table, where speed characteristics exhibit rest with transport speed equal to zero
DE102007036134B4 (en) * 2007-08-01 2019-01-17 Koenig & Bauer Ag Adaptable to the substrate device for feeding sheets in a shingled sequence
JP6147922B2 (en) * 2013-10-15 2017-06-14 バーゼル・ポリオレフィン・ゲーエムベーハー Polyethylene for injection molding
DE102016212712B4 (en) 2016-07-13 2019-01-31 Koenig & Bauer Ag sheet feeder
DE102016015729A1 (en) 2016-07-13 2018-01-18 Koenig & Bauer Ag sheet feeder
DE102022112361B3 (en) 2022-05-17 2023-04-06 Koenig & Bauer Ag Sheet feeder for a sheet processing machine

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3826487A (en) * 1972-01-24 1974-07-30 Polygraph Leipzig Control apparatus and method for transporting sheets
DE3331662A1 (en) * 1983-09-02 1985-03-28 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach METHOD AND DEVICE FOR FITTING A CUSTOM SHEET INTO A PRINTING MACHINE
DE4203511A1 (en) * 1992-02-07 1993-08-12 Roland Man Druckmasch DEVICE FOR PROMOTING A SCALED FLOW CURRENT TO A BOW PROCESSING MACHINE
DE4416286C2 (en) * 1994-05-07 1999-10-28 Heidelberger Druckmasch Ag Device for adjusting the negative pressure in a suction belt feed table of a sheet feeder
DE4442629C2 (en) * 1994-12-01 1998-05-07 Heidelberger Druckmasch Ag Suction belt table
DE19505560C2 (en) * 1995-02-18 1998-07-02 Roland Man Druckmasch Procedure for controlling sheet feeding
DE19618870A1 (en) * 1996-05-10 1997-11-13 Heidelberger Druckmasch Ag Device for conveying an in particular flaky stream of sheets to a sheet processing machine
DE19817175A1 (en) * 1997-09-19 1999-03-25 Heidelberger Druckmasch Ag Device to deliver especially ragged flow of paper sheets to processing machine
DE10021629A1 (en) * 1999-05-28 2000-11-30 Heidelberger Druckmasch Ag Multi sheet feed unit has a contact roller that is adjustable and includes a tripped switch
DE10017259B4 (en) * 2000-04-06 2006-10-26 LTG Mailänder GmbH & Co. KG Method for feeding objects

Also Published As

Publication number Publication date
US20050230905A1 (en) 2005-10-20
DE502005003941D1 (en) 2008-06-19
US7401777B2 (en) 2008-07-22
DE102004015335A1 (en) 2005-10-20
EP1582490A1 (en) 2005-10-05

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