EP0405107A1 - Device for separating of stacked sheets of paper - Google Patents

Device for separating of stacked sheets of paper Download PDF

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Publication number
EP0405107A1
EP0405107A1 EP90109082A EP90109082A EP0405107A1 EP 0405107 A1 EP0405107 A1 EP 0405107A1 EP 90109082 A EP90109082 A EP 90109082A EP 90109082 A EP90109082 A EP 90109082A EP 0405107 A1 EP0405107 A1 EP 0405107A1
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EP
European Patent Office
Prior art keywords
rotary feeder
paper
removal conveyor
conveyor
satellites
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
EP90109082A
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German (de)
French (fr)
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EP0405107B1 (en
Inventor
Lüthi Ernst
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.)
Grapha Holding AG
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Grapha Holding AG
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Publication date
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Priority to AT90109082T priority Critical patent/ATE102577T1/en
Publication of EP0405107A1 publication Critical patent/EP0405107A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00—Separating articles from piles
    • B65H3/08—Separating articles from piles using pneumatic force
    • B65H3/0808—Suction grippers
    • B65H3/085—Suction grippers separating from the bottom of 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
    • B65H3/00—Separating articles from piles
    • B65H3/42—Separating articles from piles by two or more separators mounted for movement with, or relative to, rotary or oscillating bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2403/00—Power transmission; Driving means
    • B65H2403/50—Driving mechanisms
    • B65H2403/54—Driving mechanisms other
    • B65H2403/543—Driving mechanisms other producing cycloids
    • 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
    • B65H2406/33—Rotary suction means, e.g. roller, cylinder or drum
    • B65H2406/331—Rotary suction means, e.g. roller, cylinder or drum arranged for rotating while moving along material to be handled, e.g. rolling on material
    • B65H2406/3312—Rotary suction means, e.g. roller, cylinder or drum arranged for rotating while moving along material to be handled, e.g. rolling on material arranged for planetary movement on rotary support means

Definitions

  • the present invention relates to a device according to the preamble of claim 1.
  • a device of this type is described in Swiss patent application 1017 / 88-6. With this device, paper sheets of different formats can be separated and transported individually without loss of performance.
  • a separating device in which an endless belt-like removal conveyor tangentially connects to the circular path of the rotary feeder in the delivery area and has an opposite direction of movement.
  • the satellites are provided with freely rotatable pressure rollers against which the removal conveyor is pressed, so that after their release by the suction cups, the printed sheets must be accelerated from the relative speed zero to the speed of the removal conveyor. This results in the disadvantage that stripes form on the preceding printing sheet ends.
  • the object of the present invention is to further define a separating device of the type mentioned at the beginning to develop that the sheets are transported lying on the removal conveyor at a uniform mutual distance.
  • the separating device has a rotary feeder 1 and a removal section 2, with the feeder magazine 3 being assigned a feeder magazine 3 for receiving a stack 4 of printed sheets to be separated.
  • a rotary bearing 6 is fixedly arranged in a bearing plate 5, in which a shaft 7 which can be driven by a motor is rotatably mounted.
  • a circular disk 8 is attached to the shaft 7 in a rotationally fixed manner, to which a coaxial ring disk 9 is connected by means of eight hollow shafts 10.
  • the hollow shafts 10 are mounted in corresponding bearings 11 and 12 in the disks 8 and 9 and are closed at their left end in FIG. 2, by means of which they protrude beyond the disk 8.
  • the hollow shafts 10 on the side of the ring disk 9 are open and open into the outer surface 29. is closed at the end and provided against the surface 29 open groove.
  • This groove 31 is connected to a vacuum source 33 by means of a line 32. If there is a hollow shaft 10 in the area of the groove 31, its suction devices 17 are acted upon by vacuum. If it leaves the ring segment 30, it is vented to the outside atmosphere.
  • the removal path 2 adjoins the rotary feeder and takes over the paper sheets delivered by the rotary feeder.
  • It consists of an endless conveyor belt 39 which is guided around two deflection rollers 40, 41 and can consist of a single belt or a plurality of parallel endless belts. The runs closer to the rotary feeder have essentially the same direction of movement as this. Its peripheral speed is greater than that of the rotary feeder 1.
  • the conveyor belt 39 leads to a switch 42 from which a pair of conveyor belts 43, 44 and a pair of conveyor belts 45, 46 branch off. It is further provided with stop cams 47 which are distributed at regular intervals over the circumference and whose mutual distance is greater than the distance A corresponding to the largest sheet format.
  • the rotational position of the deflection roller 40 can be selected and ascertained with reference to its drive shaft 48 (driven synchronously with the rotary feeder 1). It may also be expedient to drive the shaft 48 via a continuously variable transmission gear, so that the ratio of the peripheral speeds, if necessary, of the size and rigidity speed of the paper sheet to be separated can be optimally adjusted.
  • the position of the deflection roller 49 of the endless conveyor belt 46 is adjustable in the direction of the double arrow 50 shown. Together with the conveyor belt 39, it forms an inlet gap into which the leading edges of the incoming printed sheets enter in order to be fed to the switch 42. For the largest sheet format A, it is in the position shown with solid lines and is brought into the dash-dot position for separating the smallest sheet format A '.
  • the described device works as follows.
  • the printed sheets in the stack 4 are peeled off one after the other on the underside of the stack by the satellites 15, which rotate at the same peripheral speed as the rotary layer 1 but in the opposite direction.
  • the printed sheets with the preceding edge are pushed outward tangentially to the circumferential circle of the satellite above the circumferential circle of the rotary feeder 1 until they strike the conveyor belt 39 rotating at a higher speed.
  • the speed at which they move away from the rotary feeder 1 is equal to its peripheral speed.
  • the conveyor belt 39 is timed to the rotary feeder 1 in such a way that the leading edges of the emerging printed sheets are always in the same places, and at The presence of stop cams 47 strike the conveyor belt 39 immediately behind a stop cam.
  • the size of the rotational speed of the conveyor belt 39 is selected such that it is equal to or slightly less than the resulting speed at the preceding printing sheet edge, which is composed of the ejection speed on the one hand and the peripheral speed of the rotary feeder 1 on the other hand. 1, the printed sheet impinging on the conveyor belt 39 can bulge in the opposite direction to the direction of rotation of the rotary feeder 1 and form a compensation loop which flattens to the extent that the preceding sheet edge approaches the deflection roller 49.
  • the leading edge of the printed sheet enters the inlet gap between the conveyor belt 39 and the deflecting roller 49.
  • the trailing end of the frictional engagement between the satellite 15 and the guide belt 38 spanning it halves, so that the sheet does not form any stripes or other damage can be deducted by the conveyor belts 39 and 46.
  • the trailing sheet end is released earlier by the satellites 15.
  • the printed sheet must be captured by the conveyor belts 39, 46 at the preceding end, so that its position, which is determined according to the clock, is retained.
  • the deflection roller 49 is adjusted to an appropriate degree against the dot-dash position.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Discharge By Other Means (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)

Abstract

The device has a rotary feeder (1). Its satellites (37) move on a circular track. A continuous delivery conveyor (2) adjoins the delivery region (28). Said conveyor takes the sheets of paper from the satellites (37) and runs with one side in the delivery region (28) tangentially parallel to and at a distance from the circular track. The delivery conveyor (2) moves on in the delivery region (28) in the same direction as the rotary feeder (1). So that the sheets of paper are delivered lying at regular intervals in succession it is provided that the delivery conveyor (2) is designed in the form of a continuous belt and has a speed which is greater than that of the rotary feeder (1). <IMAGE>

Description

Die vorliegende Erfindung bezieht sich auf eine Vorrichtung gemäss dem Oberbegriff des Anspruchs 1.The present invention relates to a device according to the preamble of claim 1.

Eine Vorrichtung dieser Art ist im schweizerischen Patent­gesuch 1017/88-6 beschrieben. Mit dieser Vorrichtung können Papierbogen unterschiedlichen Formats ohne Leistungseinbusse vereinzelt und einzeln weiter transportiert werden.A device of this type is described in Swiss patent application 1017 / 88-6. With this device, paper sheets of different formats can be separated and transported individually without loss of performance.

Aus der DE-P 1 761 506 ist weiter eine Vereinzelungsvorrichtung bekannt, bei der im Abgabebereich ein endlosbandartiger Ab­transportförderer tangential an die Kreisbahn des Rotations­anlegers anschliesst und eine zu diesem entgegengesetzte Be­wegungsrichtung hat. Die Satelliten sind mit frei drehbaren Druckrollen versehen, gegen welche der Abtransportförderer gedrückt ist, so dass die Druckbogen nach ihrer Freigabe durch die Sauger von der Relativgeschwindigkeit Null momentan auf die Geschwindigkeit des Abtransportförderers beschleunigt werden müssen. Daraus ergibt sich der Nachteil, dass sich an den vor­ausgehenden Druckbogenenden Streifen bilden. Zudem besteht die Gefahr, dass die gegenseitigen Abstände der Druckbogen auf dem Abtransportförderer ungleich sind, was einer takt­gebundenen Weiterverarbeitung entgegen steht.From DE-P 1 761 506 a separating device is also known, in which an endless belt-like removal conveyor tangentially connects to the circular path of the rotary feeder in the delivery area and has an opposite direction of movement. The satellites are provided with freely rotatable pressure rollers against which the removal conveyor is pressed, so that after their release by the suction cups, the printed sheets must be accelerated from the relative speed zero to the speed of the removal conveyor. This results in the disadvantage that stripes form on the preceding printing sheet ends. In addition, there is a risk that the mutual spacing of the printed sheets on the removal conveyor will be unequal, which is opposed to further processing based on cycles.

Die vorliegende Erfindung stellt sich die Aufgabe, eine Ver­einzelungsvorrichtung der eingangs erwähnten Art derart weiter zu entwickeln, dass die Bogen mit gleichmässigem gegenseitigen Abstand auf dem Abtransportförderer liegend abgefördert werden.The object of the present invention is to further define a separating device of the type mentioned at the beginning to develop that the sheets are transported lying on the removal conveyor at a uniform mutual distance.

Erfindungsgemäss wird diese Aufgabe gelöst durch die kenn­zeichnenden Merkmale des Anspruchs 1.According to the invention, this object is achieved by the characterizing features of claim 1.

Anhand der beiliegenden schematischen Zeichnung wird die Er­findung beispielsweise erläutert. Es zeigen:

  • Fig. 1 eine Seitenansicht einer Vereinzelungsvorrichtung, wobei Teile weggelassen sind und
  • Fig. 2 einen Schnitt längs der Linie II-II in Fig. 1.
The invention is explained, for example, with the aid of the attached schematic drawing. Show it:
  • Fig. 1 is a side view of a separating device, parts being omitted and
  • 2 shows a section along the line II-II in FIG. 1st

Die Vereinzelungsvorrichtung weist einen Rotationsanleger 1 und eine Abtransportstrecke 2 auf, wobei dem Rotationsanleger 1 ein Anlegermagazin 3 zur Aufnahme eines Stapels 4 von zu vereinzelnden Druckbogen zugeordnet ist. In einem Lagerschild 5 ist fest ein Drehlager 6 angeordnet, in dem eine von einem Motor antreibbare Welle 7 drehbar gelagert ist. Drehfest auf die Welle 7 ist eine kreisrunde Scheibe 8 aufgesetzt mit der eine koachsiale Ringscheibe 9 mittels acht Hohlwellen 10 ver­bunden ist. Die Hohlwellen 10 sind in entsprechenden Lagern 11 und 12 in den Scheiben 8 und 9 gelagert und an ihrem in Fig. 2 linken Ende, mit dem sie die Scheibe 8 überragen, ver­schlossen. Auf den die Scheibe 8 überragenden Teilen der Hohl­wellen 10 haben dadurch eine der Drehrichtung der Scheiben 8 und 9 entgegengesetzte Drehrichtung. Jede Hohlwelle 10 trägt drei drehfest aufgesetzte Trommelscheiben 15 mit einer segment­artigen Ausnehmung 16. Beidseits der Trommelscheiben 15 sind an der Hohlwelle 10 radial wegragende Sauger 17 vorhanden, deren Saugnäpfe 18 mit den Ausnehmungen der Trommelscheiben 15 fluchten. Eine Hohlwelle 10 bildet zusammen mit den daran befestigten Trommelscheiben 15 und den Saugern 17 einen Satelliten 37. Im Bereich der Satelliten 37 sind mit den Trommel­scheiben 15 zusammenwirkende Führungselemente für Papierbogen vorhanden. Diese bestehen aus einem endlosen Führungsband 38, das bei jedem Satellit 37 die mittlere Trommelscheibe 15 über zirka den halben Umfang umschlingt sowie aus Umlenkrollen 19 für das Führungsband 38 sowie aus Führungswalzen 20 und 21. Die letzteren sind gleich ausgebildet und gleich angetrieben. Die Führungsrollen 19 sind am freien Ende von zur Drehachse der Scheibe 8 parallelen Stäben 22 frei drehbar gelagert. Die Stäbe 22 sind fest mit der Scheibe 8 verbunden. Die Führungs­walzen 20 (und in gleicher Weise die Führungswalzen 21) sitzen je auf einer Welle 23, die endseits frei drehbar in der Scheibe 8 und der Ringscheibe 9 gelagert ist. In Fig. 2 links sitzt auf der Welle 23 ein Ritzel 24, das mit dem Innenzahnkranz 14 kämmt. Wird der Rotationsanleger 1 in Richtung des Pfeiles 25 (Fig. 1) gedreht, werden die Wellen 10 und 23 in entgegen­gesetzter Richtung (Pfeil 26) angetrieben.The separating device has a rotary feeder 1 and a removal section 2, with the feeder magazine 3 being assigned a feeder magazine 3 for receiving a stack 4 of printed sheets to be separated. A rotary bearing 6 is fixedly arranged in a bearing plate 5, in which a shaft 7 which can be driven by a motor is rotatably mounted. A circular disk 8 is attached to the shaft 7 in a rotationally fixed manner, to which a coaxial ring disk 9 is connected by means of eight hollow shafts 10. The hollow shafts 10 are mounted in corresponding bearings 11 and 12 in the disks 8 and 9 and are closed at their left end in FIG. 2, by means of which they protrude beyond the disk 8. On the parts of the hollow shafts 10 projecting beyond the disk 8, this has a direction of rotation opposite to the direction of rotation of the disks 8 and 9. Each hollow shaft 10 carries three non-rotatably mounted drum disks 15 with a segment-like recess 16. On both sides of the drum disks 15 there are suction cups 17 projecting radially away on the hollow shaft 10, the suction cups 18 of which are aligned with the recesses of the drum disks 15. A hollow shaft 10 forms, together with the drum disks 15 attached to it and the suction cups 17, a satellite 37. In the region of the satellites 37, guide elements for paper sheets interacting with the drum disks 15 are present. These consist of an endless guide belt 38, which for each satellite 37 wraps around the middle drum disc 15 over approximately half the circumference, and of deflection rollers 19 for the guide belt 38 and of guide rollers 20 and 21. The latter are of the same design and are driven identically. The guide rollers 19 are freely rotatably supported at the free end of rods 22 parallel to the axis of rotation of the disk 8. The rods 22 are firmly connected to the disc 8. The guide rollers 20 (and in the same way the guide rollers 21) each sit on a shaft 23 which is freely rotatably supported in the disk 8 and the annular disk 9 at the ends. In Fig. 2 on the left sits on the shaft 23 a pinion 24 which meshes with the internal ring gear 14. If the rotary feeder 1 is rotated in the direction of arrow 25 (FIG. 1), the shafts 10 and 23 are driven in the opposite direction (arrow 26).

Bei drehendem Rotationsanleger (in Richtung des Pfeiles 25) bewegen sich die Satelliten 37 auf einer Kreisbahn. Dabei durch­laufen sie eine Übernahmestelle 27 und eine Abgabestelle 28. An der Übernahmestelle 27 werden die Sauger 17 des Satelliten mit Vacuum beaufschlagt, so dass sie den untersten Bogen beim Falz ergreifen. Während der weiteren Drehbewegung des Rotations­anlegers 1 wälzen die Trommelscheiben 15 auf dem ergriffenen Papierbogen ab. Der Sauger 17 hält den ergriffenen Falz so lange fest, bis dieser zwischen den Trommelscheiben 15 einer­seits und dem Führungsband 38 reibschlüssig gehalten ist. Liegt der vorangehende Falz des Druckbogens zwischen den Trommel­scheiben 15 und dem Führungsband 38, kann das Vacuum in den Saugern 17 aufgehoben werden. Der Papierbogen wird nun durch das Führungsband 38 in Anlage mit den Trommelscheiben 15 ge­halten und wird von diesen mitgenommen. Darüber hinaus ist er durch die Führungswalzen 20 und 21 soweit erforderlich auf den Abtransportförderer 2 zugeführt.When the rotary feeder rotates (in the direction of arrow 25), the satellites 37 move on a circular path. They pass through a takeover point 27 and a delivery point 28. At the takeover point 27, the suction cups 17 of the satellite vacuumed so that they grip the bottom sheet when folding. During the further rotation of the rotary feeder 1, the drum disks 15 roll on the gripped sheet of paper. The suction device 17 holds the gripped fold until it is held frictionally between the drum disks 15 on the one hand and the guide belt 38. If the preceding fold of the printed sheet lies between the drum disks 15 and the guide belt 38, the vacuum in the suction cups 17 can be released. The paper sheet is now held in contact with the drum disks 15 by the guide belt 38 and is carried by them. In addition, it is fed through the guide rollers 20 and 21 as far as necessary onto the removal conveyor 2.

Zur Erzeugung des Vacuums in den Saugern 17 im Übernahmebereich 27 sind die Hohlwellen 10 auf der Seite der Ringscheibe 9 offen und münden in dessen Aussenfläche 29. An dieser als Dichtfläche gestalteten Aussenfläche liegt vacuumdicht ein Ringsegment 30, das der Fläche 29 zugewandt mit einer kreis­abschnittförmigen, endseits geschlossenen und gegen die Fläche 29 offenen Nut versehen ist. Diese Nut 31 ist mittels einer Leitung 32 an eine Vacuumquelle 33 angeschlossen. Befindet sich eine Hohlwelle 10 im Bereich der Nut 31, sind ihre Sauger 17 mit Vacuum beaufschlagt. Verlässt sie das Ringsegment 30, wird sie gegen die Aussenatmosphäre entlüftet.To generate the vacuum in the suction cups 17 in the take-over area 27, the hollow shafts 10 on the side of the ring disk 9 are open and open into the outer surface 29. is closed at the end and provided against the surface 29 open groove. This groove 31 is connected to a vacuum source 33 by means of a line 32. If there is a hollow shaft 10 in the area of the groove 31, its suction devices 17 are acted upon by vacuum. If it leaves the ring segment 30, it is vented to the outside atmosphere.

Erreicht ein Satellit 37 die Abgabestelle, ist der vom Stapel 4 abgeschälte Papierbogen so weit um die Trommelscheiben 15 herumgeführt, dass der vorangehende Falz des Papierbogens auf einer tangential vom Umfang der Trommelscheiben 15 wegführenden Bahn über den Umfangkreis des Rotationsanlegers 1 hinaus ge­schoben ist.When a satellite 37 reaches the delivery point, the paper sheet peeled off from the stack 4 is guided so far around the drum disks 15 that the preceding fold of the paper sheet is pushed beyond the circumferential circle of the rotary feeder 1 on a path tangentially leading away from the circumference of the drum disks 15.

Bei der Abgabestelle 28 schliesst an den Rotationsanleger die Abtransportstrecke 2 an, welche die vom Rotationsanleger ab­gegebenen Papierbogen übernimmt. Sie besteht aus einem end­losen Förderband 39, das um zwei Umlenkrollen 40, 41 herum­geführt ist und aus einem einzigen Band oder mehreren paral­lelen Endlosriemen bestehen kann. Die dem Rotationsanleger näher liegenden Trums haben im wesentlichen die gleiche Bewegungsrichtung wie dieser. Seine Umfangsgeschwindigkeit ist grösser als jene des Rotationsanlegers 1. Das Förderband 39 führt zu einer Weiche 42 von der ein Förderbandpaar 43, 44 und ein Förderbandpaar 45, 46 abzweigen. Es ist weiter mit Anschlagnocken 47 versehen, die mit regelmässigem Abstand über Umfang verteilt sind und deren gegenseitiger Abstand grösser als der dem grössten Bogenformat entsprechende Abstand A ist. Die Drehlage der Umlenkrolle 40 ist mit Bezug auf ihre (taktsynchron mit dem Rotationsanleger 1 angetriebene) An­triebswelle 48 wähl- und feststellbar. Weiter kann es zweck­mässig sein, die Welle 48 über ein stufenloses Übersetzungs­getriebe anzutreiben, so dass das Verhältnis der Umfangs­geschwindigkeiten erforderlichenfalls der Grösse und Steifig­ keit der zu vereinzelnden Papierbogen optimal angepasst werden kann.At the delivery point 28, the removal path 2 adjoins the rotary feeder and takes over the paper sheets delivered by the rotary feeder. It consists of an endless conveyor belt 39 which is guided around two deflection rollers 40, 41 and can consist of a single belt or a plurality of parallel endless belts. The runs closer to the rotary feeder have essentially the same direction of movement as this. Its peripheral speed is greater than that of the rotary feeder 1. The conveyor belt 39 leads to a switch 42 from which a pair of conveyor belts 43, 44 and a pair of conveyor belts 45, 46 branch off. It is further provided with stop cams 47 which are distributed at regular intervals over the circumference and whose mutual distance is greater than the distance A corresponding to the largest sheet format. The rotational position of the deflection roller 40 can be selected and ascertained with reference to its drive shaft 48 (driven synchronously with the rotary feeder 1). It may also be expedient to drive the shaft 48 via a continuously variable transmission gear, so that the ratio of the peripheral speeds, if necessary, of the size and rigidity speed of the paper sheet to be separated can be optimally adjusted.

Die Lage der Umlenkrolle 49 des endlosen Förderbandes 46 ist in Richtung des eingezeichneten Doppelpfeiles 50 verstellbar. Sie bildet zusammen mit dem Förderband 39 einen Einlaufspalt, in den die vorangehenden Kanten der ankommenden Druckbogen einlaufen, um der Weiche 42 zugeführt zu werden. Für das grösste Bogenformat A befindet sie sich in der mit ausgezogenen Strichen gezeigten Stellung und wird für das Vereinzeln des kleinsten Bogenformats A′ in die strichpunktierte Lage gebracht.The position of the deflection roller 49 of the endless conveyor belt 46 is adjustable in the direction of the double arrow 50 shown. Together with the conveyor belt 39, it forms an inlet gap into which the leading edges of the incoming printed sheets enter in order to be fed to the switch 42. For the largest sheet format A, it is in the position shown with solid lines and is brought into the dash-dot position for separating the smallest sheet format A '.

Die beschriebene Vorrichtung funktioniert wie folgt. Die im Stapel 4 befindlichen Druckbogen werden auf der Stapelunterseite nacheinander durch die Satelliten 15 abgeschält, welche mit gleicher Umfangsgeschwindigkeit drehen wie der Rotationsleger 1 aber mit entgegengesetztem Drehsinn. Im Bereich der Abgabe­stelle 28 werden die Druckbogen mit der vorangehenden Kante tangential zum Umfangkreis des Satelliten über dem Umfangkreis des Rotationsanlegers 1 nach aussen geschoben bis sie auf das mit grösserer Geschwindigkeit umlaufende Förderband 39 auf­treffen. Die Geschwindigkeit mit der sie sich vom Rotations­anleger 1 wegbewegen ist gleich dessen Umfangsgeschwindigkeit. Dabei ist das Förderband 39 taktmässig derart auf den Rotations­anleger 1 abgestimmt, dass die vorangehenden Kanten der aus­tretenden Druckbogen stets an den gleichen Stellen, und beim Vorhandensein von Anschlagnocken 47 unmittelbar hinter einem Anschlagnocken auf das Förderband 39 auftreffen. Die Grösse der Umlaufgeschwindigkeit des Förderbandes 39 ist derart gewählt, dass sie gleich oder etwas kleiner als die resultierende Ge­schwindigkeit an der vorangehenden Druckbogenkante ist, die aus der Ausstossgeschwindigkeit einerseits und der Umfangs­geschwindigkeit des Rotationsanlegers 1 anderseits zusammen­setzt. Dabei kann sich, wie in Fig. 1 strichpunktiert ange­deutet, der auf das Förderband 39 auftreffende Druckbogen der Drehrichtung des Rotationsanlegers 1 entgegengerichtet aus­bauchen und eine Ausgleichschlaufe bilden, die in dem Masse abflacht, in dem sich die vorangehende Bogenkante der Umlenk­rolle 49 nähert.The described device works as follows. The printed sheets in the stack 4 are peeled off one after the other on the underside of the stack by the satellites 15, which rotate at the same peripheral speed as the rotary layer 1 but in the opposite direction. In the area of the delivery point 28, the printed sheets with the preceding edge are pushed outward tangentially to the circumferential circle of the satellite above the circumferential circle of the rotary feeder 1 until they strike the conveyor belt 39 rotating at a higher speed. The speed at which they move away from the rotary feeder 1 is equal to its peripheral speed. The conveyor belt 39 is timed to the rotary feeder 1 in such a way that the leading edges of the emerging printed sheets are always in the same places, and at The presence of stop cams 47 strike the conveyor belt 39 immediately behind a stop cam. The size of the rotational speed of the conveyor belt 39 is selected such that it is equal to or slightly less than the resulting speed at the preceding printing sheet edge, which is composed of the ejection speed on the one hand and the peripheral speed of the rotary feeder 1 on the other hand. 1, the printed sheet impinging on the conveyor belt 39 can bulge in the opposite direction to the direction of rotation of the rotary feeder 1 and form a compensation loop which flattens to the extent that the preceding sheet edge approaches the deflection roller 49.

Am Ende der Abgabestelle 28 tritt die vorangehende Kante des Druckbogens in den Einlaufspalt zwischen dem Förderband 39 und der Umlenkrolle 49. Gleichzeitig löst sich an seinem nachlaufenden Ende der Reibschluss zwischen dem Satelliten 15 und dem ihn hälftig umspannenden Führungsband 38, so dass der Bogen ohne Streifenbildung oder andere Schäden durch die Förderbänder 39 und 46 abgezogen werden kann.At the end of the delivery point 28, the leading edge of the printed sheet enters the inlet gap between the conveyor belt 39 and the deflecting roller 49. At the same time, the trailing end of the frictional engagement between the satellite 15 and the guide belt 38 spanning it halves, so that the sheet does not form any stripes or other damage can be deducted by the conveyor belts 39 and 46.

Beim Vereinzeln kleinerer Bogenformate erfolgt die Freigabe des nachlaufenden Bogenendes durch die Satelliten 15 früher. Zu diesem Zeitpunkt muss der Druckbogen am vorangehenden Ende durch die Förderbänder 39, 46 erfasst werden, damit seine takt­gemäss bestimmte Lage erhalten bleibt. Zu diesem Zweck wird die Umlenkrolle 49 in entsprechendem Mass gegen die strich­punktierte Lage verstellt.When separating smaller sheet formats, the trailing sheet end is released earlier by the satellites 15. At this point in time, the printed sheet must be captured by the conveyor belts 39, 46 at the preceding end, so that its position, which is determined according to the clock, is retained. For this purpose, the deflection roller 49 is adjusted to an appropriate degree against the dot-dash position.

Claims (5)

1. Vorrichtung zum Vereinzeln gestapelter Papier­bogen mit einem Rotationsanleger (1), dessen Satelliten (37) auf einer Kreisbahn von einem Übernahmebereich (3) zu einem Abgabebereich (28) bewegbar sind, wobei an den Abgabebereich (28) ein endloser Abtransportförderer (2) anschliesst, der die Papierbogen von den Satelliten (37) übernimmt, wobei der Abtransportförderer (2) mit einem Trum im Abgabebereich (28) tangentenparallel und mit Abstand zur Kreisbahn verläuft und sich gleichsinnig mit dem Rotationsanleger (1) bewegt, dadurch gekennzeichnet, dass der Abtransportförderer (2) endlosbandartig gestaltet ist und eine Geschwindigkeit aufweist, die grösser ist als die des Rotationsanlegers (1).1. Device for separating stacked sheets of paper with a rotary feeder (1), the satellites (37) of which can be moved on a circular path from a takeover area (3) to a delivery area (28), an endless removal conveyor (2) at the delivery area (28) connects, which takes over the paper sheets from the satellites (37), the removal conveyor (2) with a strand in the delivery area (28) running tangentially parallel and at a distance from the circular path and moving in the same direction with the rotary feeder (1), characterized in that the Removal conveyor (2) is designed like an endless belt and has a speed that is greater than that of the rotary feeder (1). 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Geschwindigkeit des Abtransportförderers (2) wähl- und einstellbar ist.2. Device according to claim 1, characterized in that the speed of the removal conveyor (2) is selectable and adjustable. 3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass der Abtransportförderer (2) mit Anschlägen (47) für die vorangehende Kante eines Papierbogens versehen ist und dass der Abstand der Anschläge (47) regelmässig ist und mindestens dem grösseren Bogenformat (A) entspricht.3. Apparatus according to claim 2, characterized in that the removal conveyor (2) is provided with stops (47) for the leading edge of a sheet of paper and that the distance between the stops (47) is regular and corresponds at least to the larger sheet format (A). 4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass der Rotationsanleger (1) und der Abtransportförderer (2) taktsynchron angetrieben sind.4. The device according to claim 3, characterized in that the rotary feeder (1) and the removal conveyor (2) are driven isochronously. 5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass die relative Lage des Abtransportförderers (2) mit Bezug auf seinen taktsynchronen Antrieb ein- und feststellbar ist.5. The device according to claim 4, characterized in that the relative position of the removal conveyor (2) with respect to its isochronous drive can be set and locked.
EP90109082A 1989-06-28 1990-05-15 Device for separating of stacked sheets of paper Expired - Lifetime EP0405107B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90109082T ATE102577T1 (en) 1989-06-28 1990-05-15 DEVICE FOR SEPARATING STACKED PAPER SHEETS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2404/89 1989-06-28
CH2404/89A CH679478A5 (en) 1989-06-28 1989-06-28

Publications (2)

Publication Number Publication Date
EP0405107A1 true EP0405107A1 (en) 1991-01-02
EP0405107B1 EP0405107B1 (en) 1994-03-09

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ID=4232999

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Application Number Title Priority Date Filing Date
EP90109082A Expired - Lifetime EP0405107B1 (en) 1989-06-28 1990-05-15 Device for separating of stacked sheets of paper

Country Status (6)

Country Link
US (1) US5080341A (en)
EP (1) EP0405107B1 (en)
JP (1) JPH0331142A (en)
AT (1) ATE102577T1 (en)
CH (1) CH679478A5 (en)
DE (1) DE59004864D1 (en)

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WO1998042604A2 (en) * 1997-03-26 1998-10-01 Molins Plc Blank handling apparatus
EP1020385A1 (en) * 1998-12-28 2000-07-19 Grapha-Holding Ag Device for charging a processing line with printed products
US6279894B1 (en) * 1999-01-29 2001-08-28 Windmöller & Hölscher Device for separating stacked flat bag pieces provided with socalled side folds
EP1479626A2 (en) * 2003-05-14 2004-11-24 Goss International Americas, Inc. Feed for sheet material
EP1488916A3 (en) * 2003-06-20 2006-09-06 Windmöller &amp; Hölscher KG Device for applying bag bottoms
EP1780155A3 (en) * 2004-10-14 2008-02-06 Muller Martini Mailroom Systems, Inc. Product feeder with accelerator and decelerator devices
US11472204B2 (en) 2018-09-26 2022-10-18 Heidelberger Druckmaschinen Ag Printing substrate transport device and printing machine

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US5265858A (en) * 1992-11-02 1993-11-30 Am International, Inc. Apparatus for converting a sheet material feeder from on edge to bottom feed
CH688141A5 (en) * 1994-05-20 1997-05-30 Ferag Ag Apparatus for processing printing products.
US5511769A (en) * 1994-10-31 1996-04-30 Am International, Inc. Sheet material collating apparatus
US5730436A (en) * 1995-02-17 1998-03-24 R. R. Donnelley & Sons Company Signature conveyor system with automatic phase adjustment
IT1288191B1 (en) * 1995-07-11 1998-09-11 Windmoeller & Hoelscher DEVICE FOR SINGULARIZING STACKED FLAT OBJECTS.
IT1321149B1 (en) * 2000-03-15 2003-12-30 Baumer Srl METHOD AND SYSTEM FOR TRANSFERRING DIE CUTS IN SINGLE SUCCESSION.
DE50007305D1 (en) 2000-10-05 2004-09-09 Grapha Holding Ag Device for loading a processing line with folded or unfolded printed sheets

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998042604A2 (en) * 1997-03-26 1998-10-01 Molins Plc Blank handling apparatus
WO1998042604A3 (en) * 1997-03-26 1999-01-21 Molins Plc Blank handling apparatus
US6325201B1 (en) * 1997-03-26 2001-12-04 Molins Plc Blank handling apparatus
EP1020385A1 (en) * 1998-12-28 2000-07-19 Grapha-Holding Ag Device for charging a processing line with printed products
US6279894B1 (en) * 1999-01-29 2001-08-28 Windmöller & Hölscher Device for separating stacked flat bag pieces provided with socalled side folds
EP1479626A2 (en) * 2003-05-14 2004-11-24 Goss International Americas, Inc. Feed for sheet material
EP1479626A3 (en) * 2003-05-14 2005-02-02 Goss International Americas, Inc. Feed for sheet material
US7306222B2 (en) 2003-05-14 2007-12-11 Goss International Americas, Inc. Sheet material feeder
EP1488916A3 (en) * 2003-06-20 2006-09-06 Windmöller &amp; Hölscher KG Device for applying bag bottoms
EP1780155A3 (en) * 2004-10-14 2008-02-06 Muller Martini Mailroom Systems, Inc. Product feeder with accelerator and decelerator devices
US7578501B2 (en) 2004-10-14 2009-08-25 Muller Martini Mailroom Systems, Inc. Product feeder with accelerator and decelerator devices
US11472204B2 (en) 2018-09-26 2022-10-18 Heidelberger Druckmaschinen Ag Printing substrate transport device and printing machine

Also Published As

Publication number Publication date
EP0405107B1 (en) 1994-03-09
JPH0331142A (en) 1991-02-08
US5080341A (en) 1992-01-14
CH679478A5 (en) 1992-02-28
ATE102577T1 (en) 1994-03-15
DE59004864D1 (en) 1994-04-14

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