EP0075685B1 - Device for conveying a progression of overlapping sheets of paper - Google Patents

Device for conveying a progression of overlapping sheets of paper Download PDF

Info

Publication number
EP0075685B1
EP0075685B1 EP82107180A EP82107180A EP0075685B1 EP 0075685 B1 EP0075685 B1 EP 0075685B1 EP 82107180 A EP82107180 A EP 82107180A EP 82107180 A EP82107180 A EP 82107180A EP 0075685 B1 EP0075685 B1 EP 0075685B1
Authority
EP
European Patent Office
Prior art keywords
suction
blower
fan
box
stream
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
Application number
EP82107180A
Other languages
German (de)
French (fr)
Other versions
EP0075685A1 (en
Inventor
Helmut Emrich
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.)
Manroland AG
Original Assignee
MAN Roland Druckmaschinen AG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6142769&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0075685(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Priority to AT82107180T priority Critical patent/ATE17561T1/en
Publication of EP0075685A1 publication Critical patent/EP0075685A1/en
Application granted granted Critical
Publication of EP0075685B1 publication Critical patent/EP0075685B1/en
Expired legal-status Critical Current

Links

Images

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
    • 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
    • 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
    • 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
    • B65H2406/00—Means using fluid
    • B65H2406/30—Suction means
    • B65H2406/32—Suction belts
    • B65H2406/322—Suction distributing means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/03—Image reproduction devices
    • B65H2801/21—Industrial-size printers, e.g. rotary printing press

Definitions

  • the invention relates to a device for conveying paper sheets on a conveyor, which is connected to a suction device and is provided with endlessly rotating conveyor belts, the suction device consisting of a single box, on one side of which a fan for generating a suction air flow through the conveyor belts and the suction space of the box is arranged.
  • a relatively simple device of this type is already described in DE-OS 2 456 047 as a sheet conveyor system.
  • a large number of conveyor belts run over two rollers here.
  • a cover is provided around the rollers, which is coupled to a fan.
  • the fan is attached to the underside of the device, while the top is open or only spanned by the conveyor belts.
  • the fan draws air through the conveyor belts to transport individual sheets. The air flows around the sheet and presses it onto the conveyor belts so that the sheet follows the movement of the conveyor belts.
  • a disadvantage of this device is that it is not suitable for the transport of arc streams. Due to the way it works, single sheet transport is required because the air drawn in must completely flow around the sheet. In addition, the sheet is bent due to the relatively large opening area, since there is no fixed contact surface.
  • DE-PS 723 575 describes a sheet conveying device in which a piston pump with suction containers acts on belts provided with suction openings.
  • a sheet feeder is similarly described in DE-AS 1 033 225. which has endless tapes running over vacuum chambers and provided with vacuum openings. which are made of wear-resistant steel.
  • DE-PS 1 123 679 describes a sheet feed device, the conveyor belts of which are assigned in pairs to a row of suction openings in a sheet feed table.
  • the suction openings are connected to a vacuum source via a line system.
  • DE-AS 1 181 240 describes a feed table which has perforated conveyor belts revolving via vacuum sources.
  • the conveyor belts are provided with grooves and webs on their underside in order to effectively shield incorrect air.
  • the object of the invention is therefore to simplify and cheapen the suction device in a device according to the preamble of claim 1 substantially.
  • the sensitivity to external air is to be eliminated and the stress and service life of the conveyor belts are to be improved.
  • the suction device works at a low pressure level with small changes in the pressure differences between the suction side and the delivery side over a wide range of the variable delivery flow. This is achieved with an axial fan, for example.
  • the suction device can be designed as a box, the top of which is closed by a conveyor table provided with openings with endless, rotating and perforated conveyor belts.
  • the axial fan mentioned is arranged on the opposite side of the box, so that a single large flow channel is thus created.
  • the advantage of this device is the construction as a simple box.
  • the suction air does not need to be routed through special channels, even if the number of conveyor belts and thus the number of suction holes is varied. Due to the low pressure level, the conveyor belts are only exposed to slight stresses, even when the holes for sucking up the paper sheets are enlarged. As a result, the conveyor belts rub less on their guide, wear less and also require lower driving forces and therefore less tension for the transmission of the driving force.
  • the suction air flow of the axial fan is at a low pressure level in the case of large flow rates and the pressure difference between the suction and delivery sides against external air, ie. H. is not very sensitive to flow rate increases or pressure drops, such as occur again and again at the beginning or end of the shingled flow or during interruptions.
  • an axial fan is very robust, simple and cheap.
  • the conveyor table 1 has openings 2, over which conveyor belts 3 circulate.
  • the conveyor belts 3 are provided with holes 4 and are driven by shafts 5 and stretched over a third shaft 8.
  • the conveyor table 1 is closed at the bottom by a box 6, 7.
  • the box 6, 7 consists of a cover plate 6 adapted to the conveyor table 1 and a pipe 7 connected to it.
  • the pipe 7 serves to narrow the cross section and to connect the axial fan 9 to the suction chamber 12 delimited by the box 6, 7 and the table 1.
  • the axial fan 9 generates a suction air flow 11 from the conveyor table 1 through the boxes 6, 7 to the delivery side 10 of the axial fan 9.
  • a construction for guiding the emerging air flow can be connected to the delivery side 10.
  • the suction device By combining all openings 2 in a single suction chamber 12, the suction device has a very simple construction.
  • the paper sheets of the shingled stream 13 are sucked in everywhere on the conveyor belts 3 with the same negative pressure.
  • the flow rate is at a maximum when the conveyor table 1 is empty and approximately zero when the scaled stream 13 covers the conveyor table 1.
  • the characteristic curve only drops flat with increasing conveying stream.
  • the low pressure level is compensated for by larger holes 4 in the conveyor belts. Holding forces of around 5N per sheet can be achieved depending on the format.
  • the axial fan 9 In comparison to a radial fan, a lower power is required for maintaining the negative pressure in the suction space 12 when the holes 4 in the conveyor belt 3 are not covered.
  • the axial fan 9 must use the higher power when the suction path is closed, but this is necessary for the radial fan when the suction path is open. Especially with an open or partially open suction path, i.e. H. when the conveyor table 1 is empty or partially empty, the pressure must not drop too much in order to continue to ensure the function of the device.
  • the characteristic curve drops sharply with the radial fan design in the area of large flow rates. To avoid this, a larger fan with higher performance, higher losses, greater heat and noise would have to be used.
  • the axial fan 9 avoids all these disadvantages.
  • the conveyor belts 3 can also be made movable together with the openings 2 in the conveyor table 1, since the conveyor belts are guided around the cover plate 6 on the conveyor table 1. This provides setting options for different sheet widths.
  • the axial fan 9 can be varied in terms of its operating speed and thus its delivery rate via series resistors or other electrical devices, and can thus be adapted to different papers.

Abstract

A conveyor for sheets fed to or from a printing press in an overlapped stream, the table having longitudinal slots formed therein laterally spaced from one another. A perforated endless conveyor belt is trained over the table. An enclosed chamber extending substantially the length of the table communicates directly with the slots, the chamber being convergently shaped terminating at its lower end in a throat. An axial flow fan in the throat draws air through the perforations so that a stream of overlapped sheets on the belt will be held in contact therewith for transport from one end of the table to the other. The fan is chosen to have a flow characteristic such as to maintain the pressure differential across the fan approximately constant notwithstanding variations in the rate of air flow resulting from gaps in the stream. The belt is in two narrow, laterally spaced sections dimensioned to fit into the slots.

Description

Die Erfindung bezieht sich auf eine Vorrichtung zum Fördern von Papierbogen auf einer Fördereinrichtung, die mit einer Absaugeinrichtung verbunden und mit endlos umlaufenden Förderbändern versehen ist, wobei die Absaugeinrichtung aus einem einzigen Kasten besteht, auf dessen einer Seite ein Gebläse zur Erzeugung eines Saugluftstroms durch die Transportbänder und den Saugraum des Kastens angeordnet ist.The invention relates to a device for conveying paper sheets on a conveyor, which is connected to a suction device and is provided with endlessly rotating conveyor belts, the suction device consisting of a single box, on one side of which a fan for generating a suction air flow through the conveyor belts and the suction space of the box is arranged.

Eine relativ einfache Vorrichtung dieser Art wird bereits in der DE-OS 2 456 047 als ein Blattfördersystem beschrieben. Hier laufen eine Vielzahl von Transportbändern über zwei Walzen. Um die Walzen ist eine Verkleidung vorgesehen, die mit einem Ventilator gekoppelt ist. Der Ventilator ist an der Unterseite der Vorrichtung angebracht, während die Oberseite offen bzw. lediglich von den Transportbändern überspannt ist. Zum Transport von einzelnen Blättern saugt der Ventilator Luft durch die Transportbänder an. Die Luft strömt dabei um das Blatt herum und drückt dieses so auf die Transportbänder, so daß das Blatt die Bewegung der Transportbänder mitmacht.A relatively simple device of this type is already described in DE-OS 2 456 047 as a sheet conveyor system. A large number of conveyor belts run over two rollers here. A cover is provided around the rollers, which is coupled to a fan. The fan is attached to the underside of the device, while the top is open or only spanned by the conveyor belts. The fan draws air through the conveyor belts to transport individual sheets. The air flows around the sheet and presses it onto the conveyor belts so that the sheet follows the movement of the conveyor belts.

Nachteilig an dieser Vorrichtung ist aber, daß sie nicht zum Transport von Bogenströmen geeignet ist. Durch die Funktionsweise ist Einzelblattransport erforderlich, weil die angesaugte Luft das Blatt vollkommen umströmen muß. Außerdem wird das Blatt durch die relativ große Öffnungsfläche verbogen, da keine feste Auflagefläche vorhanden ist.A disadvantage of this device, however, is that it is not suitable for the transport of arc streams. Due to the way it works, single sheet transport is required because the air drawn in must completely flow around the sheet. In addition, the sheet is bent due to the relatively large opening area, since there is no fixed contact surface.

Es sind bereits Vorrichtungen bekannt, die eine Absaugeeinrichtung für die Förderung eines geschuppten Bogenstroms mit Hilfe von Bändertischen benutzen.Devices are already known which use a suction device for conveying a shingled sheet stream with the aid of belt tables.

So ist in der DE-PS 723 575 eine Bogenfördereinrichtung beschrieben, in der eine Kolbenpumpe mit Saugbehältern auf mit Saugöffnungen versehene Bänder wirkt. Ähnlich ist in der DE-AS 1 033 225 ein Bogenanleger beschrieben. der über Vakuumkammern laufende, endlose und mit Vakuumöffnungen versehene Bänder besitzt. die aus verschleißfestem Stahl bestehen.For example, DE-PS 723 575 describes a sheet conveying device in which a piston pump with suction containers acts on belts provided with suction openings. A sheet feeder is similarly described in DE-AS 1 033 225. which has endless tapes running over vacuum chambers and provided with vacuum openings. which are made of wear-resistant steel.

Die DE-PS 1 123 679 beschreibt eine Bogenzuführvorrichtung, deren Transportbänder paarweise je einer Reihe von Saugöffnungen in einem Bogenanlegetisch zugeordnet sind. Die Saugoffnungen sind dabei über ein Leitungssystem mit einer Vakuumquelle verbunden.DE-PS 1 123 679 describes a sheet feed device, the conveyor belts of which are assigned in pairs to a row of suction openings in a sheet feed table. The suction openings are connected to a vacuum source via a line system.

Weiterhin ist in der DE-AS 1 181 240 ein Anlegetisch beschreiben, der über Vakuumquellen umlaufende, gelochte Förderbänder bestitzt. Die Förderbänder sind auf ihrer Unterseite mit Nuten und Stegen versehen, um Fehlluft wirksam abzuschirmen.Furthermore, DE-AS 1 181 240 describes a feed table which has perforated conveyor belts revolving via vacuum sources. The conveyor belts are provided with grooves and webs on their underside in order to effectively shield incorrect air.

Alle diese Einrichtungen sind kompliziert in ihrem Aufbau. Der Aufwand für die Erzeugung eines Vakuums in den den Förderbändern zugeordneten Saugkammern ist hoch. Eine diskontinuierliche Vakuumquelle, wie die genannte Kolbenpumpe, ist ungünstig bei Anwendung für einen kontinuierlichen Bogenstrom. Durch große Druckdifferenzen und damit auftretende große Belastungen sind außerdem spezielle Bänderführungen, verschleißarme Bändermaterialien oder speziell ausgeführte Bänderquerschnitte notwendig, zudem sind die genannten Systeme generell gegen Fehlluft empfindlich, etwa bei Beginn oder am Ende der Bogenförderung, wenn die Fördereinrichtung nur teilweise von Bogen bedeckt ist.All of these facilities are complex in structure. The effort to create a vacuum in the suction chambers assigned to the conveyor belts is high. A discontinuous vacuum source, such as the piston pump mentioned, is inconvenient when used for a continuous arc flow. Due to the large pressure differences and the resulting high loads, special belt guides, low-wear belt materials or specially designed belt cross-sections are also required, and the systems mentioned are generally sensitive to incorrect air, for example at the beginning or at the end of sheet conveying, if the conveyor is only partially covered by sheets.

Aufgabe der Erfindung ist es deshalb, die Absaugeinrichtung in einer Vorrichtung nach dem Oberbegriff des Patentanspruchs 1 wesentlich zu vereinfachen und zu verbilligen. Außerdem soll die Empfindlichkeit gegen Fremdluft beseitigt werden und die Beanspruchung und Lebensdauer der Transportbänder verbessert werden.The object of the invention is therefore to simplify and cheapen the suction device in a device according to the preamble of claim 1 substantially. In addition, the sensitivity to external air is to be eliminated and the stress and service life of the conveyor belts are to be improved.

Die so gestellte Aufgabe wird erfindungsgemäß durch eine Einrichtung nach dem Kennzeichen des Patentanspruches 1 gelöst.The object is achieved according to the invention by a device according to the characterizing part of patent claim 1.

Die Absaugeinrichtung arbeitet auf einem niedrigen Druckniveau mit geringen Änderungen der Druckdifferenzen zwischen Saugseite und Förderseite über einen weiten Bereich des veränderbaren Förderstroms. Das wird etwa durch einen Axiallüfter erreicht. Die Absaugeinrichtung kann als Kasten ausgebildet sein, dessen Oberseite durch einen mit Öffnungen versehenen Fördertisch mit endlosen, umlaufenden und gelochten Transportbändern abgeschlossen wird. Der genannte Axiallüfter ist auf der entgegengesetzten Seite des Kastens angeordnet, so daß damit ein einziger großer Strömungskanal entsteht.The suction device works at a low pressure level with small changes in the pressure differences between the suction side and the delivery side over a wide range of the variable delivery flow. This is achieved with an axial fan, for example. The suction device can be designed as a box, the top of which is closed by a conveyor table provided with openings with endless, rotating and perforated conveyor belts. The axial fan mentioned is arranged on the opposite side of the box, so that a single large flow channel is thus created.

Vorteilhaft an dieser Einrichtung ist der Aufbau als einfacher Kasten. Die Saugluft braucht nicht durch spezielle Kanäle geführt zu werden, auch wenn die Zahl der Transportbänder und damit die Zahl der Ansauglöcher variiert wird. Durch das niedrige Druckniveau sind die Transportbänder, auch bei Vergrößerung der Löcher für das Ansaugen der Papierbogen, nur geringen Beanspruchungen ausgesetzt. Dadurch reiben die Transportbänder auch weniger stark auf ihrer Führung, verschleißen nicht so stark und benötigen außerdem geringere Antriebskräfte und damit geringe Spannung für die Übertragung der Antriebskraft. Schließlich ist von Vorteil, daß der Saugluftstrom des Axiallüfters bei großen Förderströmen auf niedrigem Druckniveau ist und die Druckdifferenz zwischen Saug- und Förderseite gegen Fremdluft, d. h. gegen Förderstromerhöhung bzw. Druckabfall, wie sie am Beginn oder Ende des geschuppten Stroms oder bei Unterbrechungen immer wieder auftritt, wenig empfindlich ist. Zudem ist ein Axiallüfter sehr robust, einfach und billig.The advantage of this device is the construction as a simple box. The suction air does not need to be routed through special channels, even if the number of conveyor belts and thus the number of suction holes is varied. Due to the low pressure level, the conveyor belts are only exposed to slight stresses, even when the holes for sucking up the paper sheets are enlarged. As a result, the conveyor belts rub less on their guide, wear less and also require lower driving forces and therefore less tension for the transmission of the driving force. Finally, it is advantageous that the suction air flow of the axial fan is at a low pressure level in the case of large flow rates and the pressure difference between the suction and delivery sides against external air, ie. H. is not very sensitive to flow rate increases or pressure drops, such as occur again and again at the beginning or end of the shingled flow or during interruptions. In addition, an axial fan is very robust, simple and cheap.

Ein Ausführungsbeispiel ist im Folgenden näher beschrieben. Die beigefügte Zeichnung gibt eine Übersicht über die Gesamtanordnung. Sie beinhaltet den Teilschnitt eines Tisches mit umlaufenden Transportbändern und einer Absaugeinrichtung.An exemplary embodiment is described in more detail below. The attached drawing gives an overview of the overall arrangement. It includes the partial section of a table with rotating conveyor belts and a suction device.

Der Fördertisch 1 besitzt Öffnungen 2, über denen Transportbänder 3 umlaufen. Die Transportbänder 3 sind mit Löchern 4 versehen und laufen von Wellen 5 angetrieben und über eine dritte Welle 8 gespannt. Der Fördertisch 1 wird nach unten von einem Kasten 6, 7 abgeschlossen. Der Kasten 6, 7 besteht aus einem an dem Fördertisch 1 angepaßten Abdeckblech 6 und einem daran anschließenden Rohr 7. Das Rohr 7 dient zur Querschnittsverengung und zum Anschluß des Axiallüfters 9 an den durch den Kasten 6, 7 und den Tisch 1 abgegrenzten Saugraum 12. Der Axiallüfter 9 erzeugt einen Saugluftstrom 11 vom Fördertisch 1 durch den Kasten 6, 7 zur Förderseite 10 des Axiallüfters 9. An die Förderseite 10 kann eine Konstruktion zur Führung des austretenden Luftstroms angeschlossen werden.The conveyor table 1 has openings 2, over which conveyor belts 3 circulate. The conveyor belts 3 are provided with holes 4 and are driven by shafts 5 and stretched over a third shaft 8. The conveyor table 1 is closed at the bottom by a box 6, 7. The box 6, 7 consists of a cover plate 6 adapted to the conveyor table 1 and a pipe 7 connected to it. The pipe 7 serves to narrow the cross section and to connect the axial fan 9 to the suction chamber 12 delimited by the box 6, 7 and the table 1. The axial fan 9 generates a suction air flow 11 from the conveyor table 1 through the boxes 6, 7 to the delivery side 10 of the axial fan 9. A construction for guiding the emerging air flow can be connected to the delivery side 10.

Durch die Zusammenfassung aller Öffnungen 2 in einem einzigen Saugraum 12 ist ein sehr einfacher Aufbau der Absaugeinrichtung entstanden. Die Papierbogen des geschuppten Stroms 13 werden überall mit dem gleichen Unterdruck an die Transportbänder 3 angesaugt. Der Förderstrom ist maximal, wenn der Fördertisch 1 leer ist, und annähernd gleich Null, wenn der geschuppte Strom 13 den Fördertisch 1 bedeckt. Eine Kennlinie, die eine geringe Druckdifferenz zwischen den Betriebszuständen mit maximalem und minimalem Förderstrom d. h. mit leerem Fördertisch 1 und mit voller Belegung durch einen geschuppten Strom 13 von Papierbögen, wird günstig realisiert durch den Axiallüfter 9. Die Kennlinie fällt mit steigendem Förderstrom nur flach ab. Das niedrige Druckniveau wird durch größere Löcher 4 in den Transportbändern ausgeglichen. Haltekräfte von etwa 5N pro Bogen können je nach Format realisiert werden. Im Vergleich zu einem Radialgebläse ist beim Axiallüfter 9 eine geringere Leistung zum aufrechterhalten des Unterdruckes im Saugraum 12 notwendig, wenn die Löcher 4 im Transportband 3 nicht abgedeckt sind. Der Axiallüfter 9 muß bei geschlossenem Ansaugweg die höhere Leistung aufwenden, für das Radialgebläse ist das aber bei offenem Ansaugweg notwendig. Gerade bei offenem bzw. teilweise offenem Ansaugweg, d. h. bei leerem oder teilweise leerem Fördertisch 1, darf aber der Druck nicht zu sehr abfallen, um die Funktion der Vorrichtung auch weiter zu gewährleisten. Die Kennlinie fällt bei der Bauart Radialgebläse im Bereich großer Förderströme aber stark ab. Um das zu vermeiden, müßte ein größeres Gebläse mit höherer Leistung, höheren Verlusten, größerer Wärme- und Geräuschentwicklung verwendet werden. Alle diese Nachteile vermeidet der Axiallüfter 9. Rückwirkungen vom Axiallüfter 9 auf die Ansaugverhältnisse am Fördertisch 1 werden durch einen genügend großen Abstand vermieden. Im Rohr 7 des Gehäuses sind ausgleichsvorgänge für Druckunterschiede und Verwirbelungen möglich, so daß am Fördertisch 1 und damit an den Löchern 4 der Transportbänder 3 wieder eine gleichmäßige Druckverteilung vorhanden ist.By combining all openings 2 in a single suction chamber 12, the suction device has a very simple construction. The paper sheets of the shingled stream 13 are sucked in everywhere on the conveyor belts 3 with the same negative pressure. The flow rate is at a maximum when the conveyor table 1 is empty and approximately zero when the scaled stream 13 covers the conveyor table 1. A characteristic curve that shows a low pressure difference between the operating states with maximum and minimum flow d. H. with empty conveyor table 1 and with full occupancy by a shingled stream 13 of sheets of paper, is cheaply realized by the axial fan 9. The characteristic curve only drops flat with increasing conveying stream. The low pressure level is compensated for by larger holes 4 in the conveyor belts. Holding forces of around 5N per sheet can be achieved depending on the format. In comparison to a radial fan, a lower power is required for maintaining the negative pressure in the suction space 12 when the holes 4 in the conveyor belt 3 are not covered. The axial fan 9 must use the higher power when the suction path is closed, but this is necessary for the radial fan when the suction path is open. Especially with an open or partially open suction path, i.e. H. when the conveyor table 1 is empty or partially empty, the pressure must not drop too much in order to continue to ensure the function of the device. The characteristic curve drops sharply with the radial fan design in the area of large flow rates. To avoid this, a larger fan with higher performance, higher losses, greater heat and noise would have to be used. The axial fan 9 avoids all these disadvantages. Effects of the axial fan 9 on the suction conditions on the conveyor table 1 are avoided by a sufficiently large distance. Compensating processes for pressure differences and eddies are possible in the tube 7 of the housing, so that a uniform pressure distribution is again present at the conveyor table 1 and thus at the holes 4 of the conveyor belts 3.

In Bereichen seitlich vom Rohr 7 des Gehäuses der Absaugeinrichtung können im übrigen die Transportbänder 3 zusammen mit den Öffnungen 2 im Fördertisch 1 beweglich gemacht werden, da die Transportbänder um das Abdeckblech 6 am Fördertisch 1 herumgeführt sind. Damit sind Einstellmöglichkeiten für verschiedene Bogenbreiten gegeben. Schließlich kann über Vorwiderstände oder andere elektrische Einrichtungen der Axiallüfter 9 in seiner Betriebsdrehzahl und damit seiner Förderleistung variiert und damit an unterschiedliche Papiere angepaßt werden.In areas to the side of the tube 7 of the housing of the suction device, the conveyor belts 3 can also be made movable together with the openings 2 in the conveyor table 1, since the conveyor belts are guided around the cover plate 6 on the conveyor table 1. This provides setting options for different sheet widths. Finally, the axial fan 9 can be varied in terms of its operating speed and thus its delivery rate via series resistors or other electrical devices, and can thus be adapted to different papers.

Claims (2)

1. Device for feeding paper sheets (13) on a feeding arrangement which is connected with a suction device and is provided with endlessly circulating transport belts (3), wherein the suction device consists of a single box (6, 7) on one side of which is arranged a blower (9) to generate a suction airstream through the transport belts (3) and the suction space (12) of the box (6, 7) characterised in that the feeding arrangement is constituted by a feeding table (1) which is provided with openings (2) and on which the side of the box (6, 7) lying opposite the blower (9) is arranged, that endless transport belts (3) provided with holes (4) run around the feed table (1) and over the openings (2) and the suction airstream (11) is guided through the holes (4), the openings (2), the suction space (12) and the blower (9), and the blower (9) has a characteristic curve which varies only a little in terms of the reduced pressure on the suction side in the suction space (12) of the box (6, 7) to a low level over the greatest possible range from minimal to the biggest feed streams, wherein the paper sheets (13) are fed towards and away as a continuous stream in such a fashion that the suction airstream (11) is there interrupted by the paper sheets (13) lying overlapped on the feed table (1), where in each case at least the front part of a paper sheet (13) is sucked against the transport belts (3).
2. Device according to claim 1 characterised in that the blower (9) is an axial fan.
EP82107180A 1981-09-28 1982-08-09 Device for conveying a progression of overlapping sheets of paper Expired EP0075685B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82107180T ATE17561T1 (en) 1981-09-28 1982-08-09 DEVICE FOR CONVEYING A SHELLED STREAM OF PAPER SHEETS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3138481A DE3138481C2 (en) 1981-09-28 1981-09-28 Device for conveying a shingled stream of sheets of paper
DE3138481 1981-09-28

Publications (2)

Publication Number Publication Date
EP0075685A1 EP0075685A1 (en) 1983-04-06
EP0075685B1 true EP0075685B1 (en) 1986-01-22

Family

ID=6142769

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82107180A Expired EP0075685B1 (en) 1981-09-28 1982-08-09 Device for conveying a progression of overlapping sheets of paper

Country Status (6)

Country Link
US (1) US4647033A (en)
EP (1) EP0075685B1 (en)
JP (2) JPS5869655A (en)
AT (1) ATE17561T1 (en)
BR (1) BR8205307A (en)
DE (2) DE3138481C2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4203511A1 (en) * 1992-02-07 1993-08-12 Roland Man Druckmasch DEVICE FOR PROMOTING A SCALED FLOW CURRENT TO A BOW PROCESSING MACHINE

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US4745283A (en) * 1984-10-16 1988-05-17 Fuji Photo Film Co., Ltd. Stimulable phosphor sheet transfer apparatus which includes first and second suction boxes separately connected to a section blower and a pair of buffer tanks
US4598901A (en) * 1984-10-24 1986-07-08 Marquip, Inc. Shingling and stacking of conveyed sheet material with pre-shingling control of sheet feed
DE3525040C2 (en) * 1985-07-13 1994-05-11 Bell & Howell Co Device for redirecting the conveying direction of paper sheets
CH670077A5 (en) * 1985-08-22 1989-05-12 Ferag Ag
DE3838078C3 (en) * 1988-11-10 1998-08-13 Roland Man Druckmasch Device for conveying a flow of sheets
DE4013302A1 (en) * 1990-04-26 1991-10-31 Koenig & Bauer Ag DEVICE FOR PROMOTING A PARTICULAR DIVIDED FLOW FROM ARC
JP2601959B2 (en) * 1990-10-15 1997-04-23 富士写真フイルム株式会社 Sheet transport sorting device
DE4040485C2 (en) * 1990-12-18 1995-05-11 Roland Man Druckmasch Device for conveying a stream of sheets, in particular shingled
DE4112222C2 (en) * 1991-04-15 1994-12-01 Roland Man Druckmasch Device for controlling sheet travel in the area of the application marks of sheet-fed offset printing machines
DE4201411A1 (en) * 1992-01-21 1993-07-22 Blohm Voss Ag Hold down for flat thin paper sheets on processing machines - has perforated endless belt set close in front of delivery station
DE4243486C1 (en) * 1992-12-22 1994-04-07 Heidelberger Druckmasch Ag Setting table for sheet-fed printing press - has preasembled unit of frame with rollers and belt, to move sheets
US5379999A (en) * 1993-07-23 1995-01-10 Eastman Kodak Company Sheet media handling apparatus
DE4430296C2 (en) * 1994-08-26 1997-12-11 Roland Man Druckmasch Device for the lateral alignment of sheets
US5509352A (en) * 1994-09-23 1996-04-23 Ward Holding Company Paperboard processing machine with vacuum transfer system
DE19508866C1 (en) * 1995-03-11 1996-03-21 Roland Man Druckmasch Double sheet detector on paper sheet processing machine, esp. printer
DE69503371D1 (en) * 1995-08-09 1998-08-13 Texo Srl System for re-supplying sheets, in particular sheets made of corrugated cardboard, for use in printing and punching machines
DE19546496A1 (en) * 1995-12-13 1997-06-19 Bielomatik Leuze & Co Sheet handler for paper processing
US6013895A (en) * 1997-09-30 2000-01-11 Eastman Machine Company System and method for perforating sheet material
US6216848B1 (en) * 1999-04-09 2001-04-17 Profold, Inc. Vacuum table conveying apparatus and associated methods
JP3476437B2 (en) * 2001-01-05 2003-12-10 株式会社日本アルミボデーメンテナンス Booth for film painting
DE102004022141A1 (en) * 2004-05-05 2005-11-24 Heidelberger Druckmaschinen Ag Device for conveying and simultaneously aligning sheets
DE202010014946U1 (en) 2010-11-04 2011-01-05 Manroland Ag feed table
DE202010015539U1 (en) 2010-11-18 2011-01-20 Manroland Ag suction belt
DE102012207285A1 (en) * 2012-05-02 2013-11-07 Bdt Media Automation Gmbh Apparatus and method for forming and / or transporting a scale flow of flat, flexible objects
JP6270133B2 (en) * 2014-02-12 2018-01-31 株式会社小森コーポレーション Flexible electronic device manufacturing equipment
DE102015101499A1 (en) 2014-08-08 2016-02-11 manroland sheetfed GmbH feed table
ES1265209Y (en) * 2020-11-05 2021-07-05 Comercial Industrial Maqu Carton Ondulado S L Tank device for the transport of laminar elements and conveyor assembly

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE723575C (en) * 1938-11-05 1942-08-06 Koenig Werk G M B H Maschf Bow conveyor device
DE1033225B (en) * 1953-05-19 1958-07-03 Thekla Lochner Sheet feeder for printing machines with endless suction belts
DE1123679B (en) * 1959-06-30 1962-02-15 Stabilimento Di Arti Grafiche Sheet feeding device for printing machines
GB938500A (en) * 1961-09-23 1963-10-02 Deritend Eng Co Improved suction feed mechanism for cardboard and like blanks
DE1181240B (en) * 1963-10-15 1964-11-12 Mabeg Maschb G M B H Nachf Hen Feed table for sheet feeder
US3722665A (en) * 1971-03-31 1973-03-27 Anchor Hocking Corp Vacuum elevating conveyor
JPS4922844A (en) * 1972-06-20 1974-02-28
US3889801A (en) * 1972-10-26 1975-06-17 Bell & Howell Co Vacuum conveyor belt with air bearing
US3904188A (en) * 1972-10-26 1975-09-09 Itek Corp Printing plate transfer and support apparatus
GB1494325A (en) * 1973-11-23 1977-12-07 Emf Corp Conveyor system
JPS511162A (en) * 1974-06-21 1976-01-07 Hayashi Seiki Seizo Kk UDEDOKEINO TOKEIGAWA
IT1025462B (en) * 1974-11-06 1978-08-10 Cremona Angelo EQUIPMENT SUITABLE FOR THE AUTOMATIC LOADING OF WET SHEETS INTO A DRYER WITH BELTS OT A SHEETS AS WELL AS THE UNLOADING AND STACKING OF THE DRY SHEETS FROM IT
US4157177A (en) * 1975-12-10 1979-06-05 Dr. Otto C. Strecker Kg. Apparatus for converting a stream of partly overlapping sheets into a stack
ES237776Y (en) * 1978-08-16 1979-04-01 STACKER-FEEDER DEVICE.
US4363478A (en) * 1979-07-23 1982-12-14 Yasuhiro Tsukasaki Method and apparatus of feeding corrugated boards
US4295737A (en) * 1980-01-10 1981-10-20 Xerox Corporation Grooved belt document registration system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4203511A1 (en) * 1992-02-07 1993-08-12 Roland Man Druckmasch DEVICE FOR PROMOTING A SCALED FLOW CURRENT TO A BOW PROCESSING MACHINE

Also Published As

Publication number Publication date
DE3268670D1 (en) 1986-03-06
DE3138481C2 (en) 1984-05-10
ATE17561T1 (en) 1986-02-15
JPS63157064U (en) 1988-10-14
BR8205307A (en) 1983-08-16
JPS5869655A (en) 1983-04-25
DE3138481A1 (en) 1983-06-01
EP0075685A1 (en) 1983-04-06
US4647033A (en) 1987-03-03

Similar Documents

Publication Publication Date Title
EP0075685B1 (en) Device for conveying a progression of overlapping sheets of paper
EP0453790B1 (en) Device for conveying sheets
DE2755160C3 (en) Device for decelerating and overlapping sheets or sheets of sheets to be deposited as a stack on a tray
DE3411029C2 (en)
EP0497002B1 (en) Device for forming a gap in a stream of overlapping articles
EP1593628B1 (en) Device for simultaneously feeding and aligning sheets
CH676459A5 (en)
WO1993001115A1 (en) Device for turning a sheet with a simultaneous change in the direction of transport
EP0888992B1 (en) Feed table for the stepwise feeding of sheets to a sheet processing machine
DE2358206C3 (en) Device on printing machines for transporting sheets
DE2453753B2 (en) Sheet brake
DE102004030277B4 (en) Device for conveying sheets by a printing machine
DE2354967C2 (en) Device for the continuous removal of impurities deposited at spinning stations
CH621153A5 (en)
DE4223839C1 (en) Sheet guiding cylinder of a printing machine
CH397727A (en) Sheet dispensing mechanism for a printing press
AT400582B (en) DEVICE FOR PRODUCING A FIBER FABRIC
DE4035985B4 (en) Suction process and suction device in a paper machine
DE2237291C3 (en) Cigarette machine
DE1931208C3 (en) Device for conveying and depositing sheets of paper and other sheet material in stacks
EP0830478B1 (en) Device for stabilizing a continuous strip of paper in a paper-making machine in the vicinity of a roll
EP0806389B1 (en) Device for forwarding a stream of overlapping sheets
DE4421918C1 (en) Paper sheet transporting and alignment mechanism
DE3527277C2 (en) Stacking device for stacking sheets while feeding the sheets at the bottom of the stack
DE8128326U1 (en) Device for conveying a shingled stream of sheets of paper

Legal Events

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

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT CH DE FR GB IT LI NL SE

17P Request for examination filed

Effective date: 19830812

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

ITF It: translation for a ep patent filed

Owner name: DOTT. FRANCO CICOGNA

AK Designated contracting states

Designated state(s): AT CH DE FR GB IT LI NL SE

REF Corresponds to:

Ref document number: 17561

Country of ref document: AT

Date of ref document: 19860215

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3268670

Country of ref document: DE

Date of ref document: 19860306

ET Fr: translation filed
PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

26 Opposition filed

Opponent name: HEIDELBERGER DRUCKMASCHINEN AG

Effective date: 19860920

NLR1 Nl: opposition has been filed with the epo

Opponent name: HEIDELBERGER DRUCKMASCHINEN AG

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

26 Opposition filed

Opponent name: KOENIG & BAUER AKTIENGESELLSCHAFT

Effective date: 19901115

Opponent name: HEIDELBERGER DRUCKMASCHINEN AG

Effective date: 19860920

NLR1 Nl: opposition has been filed with the epo

Opponent name: KOENIG & BAUER AG

PLBN Opposition rejected

Free format text: ORIGINAL CODE: 0009273

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

Free format text: STATUS: OPPOSITION REJECTED

27O Opposition rejected

Effective date: 19920922

NLR2 Nl: decision of opposition
ITTA It: last paid annual fee
EAL Se: european patent in force in sweden

Ref document number: 82107180.0

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19950713

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19950717

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19950726

Year of fee payment: 14

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19960810

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19960831

Ref country code: CH

Effective date: 19960831

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19970301

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 19970301

EUG Se: european patent has lapsed

Ref document number: 82107180.0

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19980723

Year of fee payment: 17

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990809

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20000717

Year of fee payment: 19

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20000801

Year of fee payment: 19

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20010801

Year of fee payment: 20

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010809

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20010809

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020430

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

APAH Appeal reference modified

Free format text: ORIGINAL CODE: EPIDOSCREFNO