EP1513753A1 - Device for separating sheet-type products - Google Patents

Device for separating sheet-type products

Info

Publication number
EP1513753A1
EP1513753A1 EP03732491A EP03732491A EP1513753A1 EP 1513753 A1 EP1513753 A1 EP 1513753A1 EP 03732491 A EP03732491 A EP 03732491A EP 03732491 A EP03732491 A EP 03732491A EP 1513753 A1 EP1513753 A1 EP 1513753A1
Authority
EP
European Patent Office
Prior art keywords
friction
singling
grooves
sliding
retaining
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
EP03732491A
Other languages
German (de)
French (fr)
Other versions
EP1513753B1 (en
Inventor
Rainer Stoll
Alois Wagner
Frank Werner
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.)
Giesecke and Devrient GmbH
Original Assignee
Giesecke and Devrient GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Giesecke and Devrient GmbH filed Critical Giesecke and Devrient GmbH
Publication of EP1513753A1 publication Critical patent/EP1513753A1/en
Application granted granted Critical
Publication of EP1513753B1 publication Critical patent/EP1513753B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B65H3/00—Separating articles from piles
    • B65H3/46—Supplementary devices or measures to assist separation or prevent double feed
    • B65H3/52—Friction retainers acting on under or rear side of article being separated
    • B65H3/5207—Non-driven retainers, e.g. movable retainers being moved by the motion of the article
    • B65H3/523—Non-driven retainers, e.g. movable retainers being moved by the motion of the article the retainers positioned over articles separated from the bottom of the pile
    • B65H3/5238—Retainers of the pad-type, e.g. friction pads
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D3/00—Sorting a mixed bulk of coins into denominations
    • 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
    • B65H3/02—Separating articles from piles using friction forces between articles and separator
    • B65H3/06—Rollers or like rotary separators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/50—Surface of the elements in contact with the forwarded or guided material
    • B65H2404/53—Surface of the elements in contact with the forwarded or guided material with particular mechanical, physical properties
    • B65H2404/531—Surface of the elements in contact with the forwarded or guided material with particular mechanical, physical properties particular coefficient of friction
    • B65H2404/5311—Surface with different coefficients of friction

Definitions

  • the invention relates to a friction decoration for separating sheet-shaped documents of value, such as banknotes, checks or the like.
  • the friction decoration comprises a sheet storage for receiving a stack of sheets, a take-off device with a separating element, which has one or more friction elements with grooves running in the transport direction of the sheets to be separated, for contacting and conveying the sheets to be separated from the sheet storage, and a retaining device which forms a singling gap with the singling element, through which the sheets to be singled are conveyed out of the sheet material storage, and which has friction areas with a high coefficient of friction and sliding areas with a low coefficient of friction interacting with the grooves of the singling element.
  • the present application deals with the concept of the friction decoration.
  • the friction elements of a singler roller act on the surface of a banknote of a stack of banknotes, the banknote contacted in this way being conveyed in a transport direction by rotation of the singler roller, while the remaining banknotes of the stack of banknotes are retained by a retaining device.
  • the retaining device and the singling roller form a singling gap through which the banknote is conveyed.
  • the singling roller has in
  • the retaining device can be implemented, for example, as a retaining roller or as a retaining block or skid, which can be mounted either rigidly or rotatably against the direction of transport.
  • the singling roller can be provided with friction elements, the friction linings of which have a significantly higher coefficient of friction than the corresponding friction linings of the retention device, the friction ratio being approximately 2: 1, for example.
  • the contact area between the sheet material and the The friction elements of the singling roller is considerably larger than the contact area between the sheet material and the friction areas of the retaining device. This is achieved by the retaining roller engaging in adjacent circumferential grooves of the singling roller alternately with a material with a high coefficient of friction (“friction range”) and with a material with a low coefficient of friction (“sliding range”). If the coefficient of friction of the sliding areas of the retaining device is negligibly low, then the friction coefficient ratio of approximately 2: 1 again results because of the otherwise identical friction materials of the retaining device and the singling roller.
  • the friction wheel decoration according to DE 100 08 135 AI is particularly suitable for the cross separation of banknotes, in which the banknotes are separated with their longitudinal edge in advance.
  • twists of the banknotes occasionally occur when they are separated, which can lead to jamming in the separator gap or to a jam in the subsequent transport path.
  • the object of the present invention is to propose a friction decorator of the type mentioned at the outset for separating sheet material, in particular for banknotes, in which the problem of the sheet material being twisted in the separation, especially when using the friction separator as a longitudinal separator, is reduced.
  • a groove of the singling element interacts both with a friction area and with a sliding area of the retaining device.
  • each groove interacts either with a friction area or with a sliding area of the retaining device.
  • the known design leads to a torque acting on the bank note when a bank note is separated, if the bank note is transported, for example, only over two grooves of the separating element. Then only a friction area with the first groove and a sliding area with the second groove act on the bank note at different points from the retaining device. If the feed force responsible for the transport of the banknote does not act centrally on the banknote, it causes a twisting torque which cannot be compensated for by the only effective friction area. This twisting element is made responsible for the twisting and jamming of the sheet material mentioned in the singling gap.
  • the sheet material is guided with friction via two grooves, which reduces the risk of the sheet material twisting.
  • the order of the friction and sliding areas interacting with the individual grooves can be different for different grooves and is preferably opposite for adjacent grooves. In the latter case, the torques acting in each groove on the sheet material being transported essentially cancel each other out due to the torque acting in the opposite direction in the respectively adjacent groove, whereby the guiding properties of the friction separator are additionally improved.
  • the retaining device is preferably formed by one or more retaining wheels which have the friction and sliding areas. This is particularly advantageous if the singling element is also designed as a rotating singling roller, as a result of which the frictional wear on the individual components is kept low.
  • FIG. 1 schematically shows a cross section of a friction wheel singler along the singling direction of the banknotes
  • FIG. 2 shows the friction wheel trim from FIG. 1 schematically in supervision according to the prior art
  • FIG. 3 shows the friction wheel trim from FIG. 1 schematically in supervision according to the invention
  • FIG. 4a shows a detail of a front view of the friction wheel singler according to FIGS. 1 and 2 according to the prior art
  • FIGS. 1 and 3 shows a detail of a front view of the friction wheel singler according to FIGS. 1 and 3 according to the present invention.
  • the friction wheel decoration according to FIG. 1 is essentially constructed as described in DE 100 08 135 AI. Therefore, a detailed description of these components known per se is omitted here.
  • the singling roller 1 and the retaining roller 14 have circumferential grooves 2 in a manner known per se, which are arranged offset to one another and are adjusted in width so that the retaining rollers 14, which are adjustable in height, increase the frictional forces in the grooves of the singling roller 1 can intervene.
  • Two retention rollers 14 each have a friction area 14a and a smooth sliding area 14b of approximately the same size. With the friction areas 14a and sliding areas 14b, the retaining rollers 14 engage in the circumferential grooves 2 of the singling roller 1. This results in the separation of the lowest banknote 5a of the banknote stack 5 in each case two line contacts of the banknote 5a between the retaining rollers 14 and the singling roller 1 in each circumferential groove 2.
  • a contact edge or "sliding edge”.
  • the retaining roller 14 exerts only half the frictional force on the banknote 5a to be separated, as does the friction segment 3 of the singling roller 1, which consists of the same friction material as the friction regions 14a of the retaining roller 14.
  • Cast polyurethane is particularly suitable as the friction material.
  • the separating roller 1 is made from a plastic with a low coefficient of friction, just like the sliding areas 14b of the retaining wheel 14.
  • the banknote stack 5 placed in the input compartment 16 of the friction wheel singler is separated as follows: the bottom banknote 5a to be separated next lies against the singler roll 1 with its front edge.
  • the force with which the stack of banknotes 5 deposited in the sheet material storage 16, which is designed here as an inclined baffle plate, acts on the singling roller 1 is determined solely by gravity and therefore depends on the weight and thus essentially on the height of the bank knot stack 5.
  • the banknotes are preferably pushed to the singling gap 19 at a speed which corresponds to the transport speed of the banknote after separation.
  • the singling gap 19 is formed by the opposing surface areas of the singling roll 1 and the retaining roller 14.
  • FIG. 2 shows the friction wheel decoration with two retaining rollers 14 designed according to the prior art.
  • both retaining rollers 14 act on the sheet 5a to be separated.
  • a torque exerted on the banknote by one retaining roller is compensated for by the other retaining roller.
  • singling in the longitudinal format, in which the banknotes lie with their narrower transverse edges against the singling gap 19, it can happen, however, that the banknotes only abut one of the two retention rollers 14.
  • the feed force acting on it does not act centrally on the banknote to be separated, it also exerts a torque perpendicular to the feed direction on the banknote, which in this case is not compensated for by a second retaining roller. This can result in the banknote jamming in the separating gap 19 or behind it.
  • FIG. 3 shows the schematic view of the friction wheel singler according to FIG. 2, but with retaining rollers 14 modified according to the invention. Accordingly, the retaining rollers 14 still have both friction areas 14a and sliding areas 14b. However, the retaining rollers 14 engage in each groove 2 of the singling roller 1 with both a friction surface 14a and with a sliding surface 14b, so that they form both a friction edge and a sliding edge with each groove 2.
  • FIG. 4b shows in detail in FIG. 4b in comparison to the prior art in accordance with FIG. 4a, FIGS. 4a and 4b each only showing a singling roller 1 with two circumferential grooves 2 and a retaining roller 14 with friction areas 14a and sliding areas 14b, which correspond to the Interact circumferential grooves 2 of the singling roller 1.
  • the friction areas 14a and sliding areas 14b are divided in such a way that both a friction area 14a and a sliding area 14b of the retaining roller 14 interact with each circumferential groove 2 of the singling roller 1.
  • the retaining roller 14 forms either two sliding edges or two friction edges with each of the peripheral grooves 2 of the singling roller 1
  • the retaining roller 14 according to the invention thus forms a sliding edge and a friction edge with each peripheral groove 2 of the singling roller 1.

Abstract

The invention relates to a friction wheel separator for separating bank notes. Said device comprises a separating roller (1) having grooves (2) and retaining wheels (14) which co-operate with said grooves (2). Said retaining wheels (14) are provided with friction regions (14a) and sliding regions (14b), such that both a sliding region (14b) and a friction region (14a) co-operate with each groove (2) of the separating roller (1). One such friction separator is also especially suitable for the longitudinal separation of narrow bank notes and prevents the sheet to be separated from twisting during the separation process.

Description

Vorrichtung zum Vereinzeln von Blattgut Device for separating sheet material
Die Erfindung betrifft einen Reibvereinzier zum Vereinzeln vo blattförmigen Wertdokumenten , wie Banknoten, Schecks oder dergleichen. Der Reibvereinzier umfaßt einen Blattgutspeicher zum Aufnehmen eines Blattgutstapels, eine Abzugseinrichtung mit einem Vereinzlerelement, das zur Kontaktierung und Förderung der aus dem Blattgutspeicher zu vereinzelnden Blätter ein oder mehrere Reibelemente mit in Transportrichtung der zu vereinzelnden Blätter verlaufenden Nuten aufweist, und eine Rückhalteein- richtung, die mit dem Vereinzlerelement einen Vereinzlerspalt bildet, durch den die zu vereinzelnden Blätter aus dem Blattgutspeicher gefördert werden, und die mit den Nuten des Vereinzlerelements zusammenwirkende Reibbereiche mit hohem Reibkoeffizienten und Gleitbereiche mit niedrigem Reibkoeffizienten besitzt.The invention relates to a friction decoration for separating sheet-shaped documents of value, such as banknotes, checks or the like. The friction decoration comprises a sheet storage for receiving a stack of sheets, a take-off device with a separating element, which has one or more friction elements with grooves running in the transport direction of the sheets to be separated, for contacting and conveying the sheets to be separated from the sheet storage, and a retaining device which forms a singling gap with the singling element, through which the sheets to be singled are conveyed out of the sheet material storage, and which has friction areas with a high coefficient of friction and sliding areas with a low coefficient of friction interacting with the grooves of the singling element.
Es gibt unterschiedliche technische Konzepte, um Blattgutstapel wie Banknotenbündel so zu vereinzeln, dass die vereinzelten Banknoten einer Prüfsen- sorik zugeführt werden können, die die Echtheit, die qualitative Beschaffenheit, die Denomination oder andere charakteristische Eigenschaften der Banknoten bestimmt.There are various technical concepts for separating stacks of sheets such as bundles of banknotes in such a way that the separated banknotes can be fed to a test sensor which determines the authenticity, the quality, the denomination or other characteristic properties of the banknotes.
Die vorliegende Anmeldung beschäftigt sich dabei mit dem Konzept der Reibvereinzier. Bei einem Reibradvereinzier greifen beispielsweise die Reibelemente einer Vereinzlerwalze an der Oberfläche einer Banknote eines Banknotenstapels an, wobei die so kontaktierte Banknote reibungsbedingt durch Rotation der Vereinzlerwalze in eine Transportrichtung gefördert wird, während die übrigen Banknoten des Banknotenstapels durch eine Rückhalteeinrichtung zurückgehalten werden. Die Rückhalteeinrichtung und die Vereinzlerwalze bilden zu diesem Zweck einen Vereinzlerspalt, durch den die Banknote gefördert wird. Die Vereinzlerwalze besitzt inThe present application deals with the concept of the friction decoration. In the case of a friction wheel decorator, for example, the friction elements of a singler roller act on the surface of a banknote of a stack of banknotes, the banknote contacted in this way being conveyed in a transport direction by rotation of the singler roller, while the remaining banknotes of the stack of banknotes are retained by a retaining device. For this purpose, the retaining device and the singling roller form a singling gap through which the banknote is conveyed. The singling roller has in
Transportrichtung der zu vereinzelnden Banknoten verlaufende Nuten, in welche die Rückhalteeinrichtung geringfügig eingreifen kann. Die Eingrifftiefe ist einstellbar.Direction of transport of the grooves to be separated banknotes, in which the restraining device can engage slightly. The depth of engagement is adjustable.
Um sicherzustellen, dass die von der Vereinzlerwalze kontaktierte Banknote gefördert wird und die übrigen Banknoten des Banknotenstapels zurückgehalten werden, muß im Vereinzlerspalt von der Vereinzlerwalze eine Vereinzelungskraft bzw. Vorschubkraft auf die Banknote ausgeübt werden, die größer ist als die Rückhaltekraft, die von der Rückhalteeinrichtung auf der gegenüberliegenden Seite des Vereinzlerspalts auf die Banknote ausgeübt wird. Die Rückhalteeinrichtung kann beispielsweise als Rückhalterolle oder als Rückhalteklotz oder -kufe realisiert sein, die entweder starr oder gegen die Transportrichtung drehbar gelagert sein kann.In order to ensure that the banknote contacted by the singling roller is conveyed and the remaining banknotes of the stack of banknotes are retained, a singling force or feed force must be exerted on the banknote by the singling roller that is greater than the retaining force exerted by the retaining device the opposite side of the separator gap is exerted on the banknote. The retaining device can be implemented, for example, as a retaining roller or as a retaining block or skid, which can be mounted either rigidly or rotatably against the direction of transport.
Um das Verhältnis der Vorschubkraft zur Rückhaltekraft auf einem ge- wünschten festen Wert einzustellen, kann die Vereinzlerwalze mit Reibelementen versehen sein, deren Reibbeläge einen wesentlich höheren Reibkoeffizienten aufweisen, als die entsprechenden Reibbeläge der Rückhalteeinrichtung, wobei das Reibverhältnis zum Beispiel etwa 2:1 beträgt.In order to set the ratio of the feed force to the retention force to a desired fixed value, the singling roller can be provided with friction elements, the friction linings of which have a significantly higher coefficient of friction than the corresponding friction linings of the retention device, the friction ratio being approximately 2: 1, for example.
Als nachteilhaft stellt sich bei dieser Vorgehensweise heraus, dass die unterschiedlichen Reibmaterialien der Vereinzlerwalze und der Rückhalteeinrichtung teilweise ein sehr unterschiedliches Betriebsverhalten aufweisen, beispielsweise in Bezug auf Beständigkeit gegen Umwelteinflüsse, Feuchtigkeitsaufnahme, Temperaturkoeffizient, Alterung und Verschleißfestigkeit. Dies kann zu unterschiedlichen Standzeiten führen und beeinflusst das Reibverhältnis, was zu Vereinzelungsfehlern bis hin zum Mehrfachabzug führen kann, bei dem mehr als ein Blatt von der Vereinzlerwalze erf asst und gefördert werden. Zur Vermeidung dieser Probleme wurde ein Reibradvereinzier entwickelt, bei dem für Vereinzlerwalze und Rückhalteeinrichtung das gleiche Reibmaterial bzw. Reibmaterial mit gleichem Reibwert verwendet wird (DE 100 08 135 AI). Um trotz der Verwendung des im wesentlichen gleichen Reibmate- rials für Rückhaltung und Vereinzlung sicherzustellen, dass die auf das zu vereinzelnde Blattgut wirkende Kraft der Vereinzlerwalze ausreichend weit über der von der Rückhalteeinrichtung ausgeübten Kraft liegt, wird vorgesehen, dass der Kontaktbereich zwischen dem Blattgut und den Reibelementen der Vereinzlerwalze wesentlich größer ist, als der Kontaktbereich zwi- sehen dem Blattgut und den Reibbereichen der Rückhalteeinrichtung. Dies wird erreicht, indem die Rückhalterolle in benachbarte Umf angsnuten der Vereinzlerwalze abwechselnd mit einem Material mit hohem Reibkoeffizienten („Reibbereich") und mit einem Material mit niedrigem Reibkoeffizienten („Gleitbereich") eingreift. Wenn der Reibkoeffizient der Gleitbereiche der Rückhalteeinrichtung vernachlässigbar gering ist, so ergibt sich wegen der im übrigen gleichen Reibmaterialien der Rückhalteeinrichtung und der Vereinzlerwalze wiederum ein Reibwertverhältnis von etwa 2:1.It turns out to be disadvantageous with this procedure that the different friction materials of the separating roller and the retention device sometimes have a very different operating behavior, for example with regard to resistance to environmental influences, moisture absorption, temperature coefficient, aging and wear resistance. This can lead to different downtimes and influences the friction ratio, which can lead to separation errors up to multiple deduction, in which more than one sheet is caught and conveyed by the separating roller. To avoid these problems, a friction wheel decorator has been developed in which the same friction material or friction material with the same coefficient of friction is used for the singler roller and retaining device (DE 100 08 135 AI). In order to ensure that the force of the separating roller acting on the sheet material to be separated is sufficiently far above the force exerted by the retaining device, despite the use of essentially the same friction material for retention and separation, it is provided that the contact area between the sheet material and the The friction elements of the singling roller is considerably larger than the contact area between the sheet material and the friction areas of the retaining device. This is achieved by the retaining roller engaging in adjacent circumferential grooves of the singling roller alternately with a material with a high coefficient of friction (“friction range”) and with a material with a low coefficient of friction (“sliding range”). If the coefficient of friction of the sliding areas of the retaining device is negligibly low, then the friction coefficient ratio of approximately 2: 1 again results because of the otherwise identical friction materials of the retaining device and the singling roller.
Der Reibradvereinzier gemäß DE 100 08 135 AI ist besonders geeignet für die Quervereinzlung von Banknoten, bei der die Banknoten mit ihrer Längskante voraus vereinzelt werden. Bei der Verwendung des Reibradvereinzlers als Längsvereinzler, bei dem die Banknoten mit ihrer schmaleren Querkante voran vereinzelt werden, treten jedoch gelegentlich Verdrehungen der Banknoten bei ihrer Vereinzlung auf, was zur Verklemmung im Vereinzler- spalt oder zu einem Stau im nachfolgendem Transportpfad führen kann.The friction wheel decoration according to DE 100 08 135 AI is particularly suitable for the cross separation of banknotes, in which the banknotes are separated with their longitudinal edge in advance. When using the friction wheel singler as a longitudinal singler, in which the banknotes are separated with their narrower transverse edges, twists of the banknotes occasionally occur when they are separated, which can lead to jamming in the separator gap or to a jam in the subsequent transport path.
Aufgabe der vorliegenden Erfindung ist es, einen Reibvereinzier der eingangs genannten Art zum Vereinzeln von Blattgut, insbesondere für Banknoten, vorzuschlagen, bei dem das Problem der Verdrehung des Blattguts bei der Vereinzlung, insbesondere bei Verwendung des Reibvereinzlers als Längsvereinzler, verringert ist.The object of the present invention is to propose a friction decorator of the type mentioned at the outset for separating sheet material, in particular for banknotes, in which the problem of the sheet material being twisted in the separation, especially when using the friction separator as a longitudinal separator, is reduced.
Diese Aufgabe wird durch einen Reibvereinzier mit den Merkmalen des An- spruchs 1 gelöst. In davon abhängigen Ansprüchen sind vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung angegeben.This object is achieved by a friction decoration with the features of claim 1. Advantageous refinements and developments of the invention are specified in claims dependent thereon.
Demnach ist vorgesehen, dass eine Nut des Vereinzlerelements sowohl mit einem Reibbereich als auch mit einem Gleitbereich der Rückhalteeinrichtung zusammenwirkt. Beim Stand der Technik war es noch so, dass jede Nut entweder mit einem Reibbereich oder mit einem Gleitbereich der Rückhalteeinrichtung zusammenwirkt. Es wird vermutet, dass die bekannte Ausführung beim Vereinzeln einer Banknote zu einem auf die Banknote wirkenden Drehmoment führt, wenn die Banknote beispielsweise nur über zwei Nuten des Vereinzlerelements transportiert wird. Dann wirken von der Rückhalteeinrichtung lediglich ein Reibbereich mit der ersten Nut und ein Gleitbereich mit der zweiten Nut an unterschiedlichen Stellen auf die Banknote. Sofern die für den Transport der Banknote verantwortliche Vorschubkraft nicht mittig auf die Banknote wirkt, bewirkt sie ein Verdrehmoment, welches von dem einzigen wirksamen Reibbereich nicht kompensiert werden kann. Dieses Verdrehelement wird für die eingangs erwähnte Verdrehung und Verklemmung des Blattguts im Vereinzlerspalt verantwortlich gemacht.Accordingly, it is provided that a groove of the singling element interacts both with a friction area and with a sliding area of the retaining device. In the prior art it was still the case that each groove interacts either with a friction area or with a sliding area of the retaining device. It is assumed that the known design leads to a torque acting on the bank note when a bank note is separated, if the bank note is transported, for example, only over two grooves of the separating element. Then only a friction area with the first groove and a sliding area with the second groove act on the bank note at different points from the retaining device. If the feed force responsible for the transport of the banknote does not act centrally on the banknote, it causes a twisting torque which cannot be compensated for by the only effective friction area. This twisting element is made responsible for the twisting and jamming of the sheet material mentioned in the singling gap.
Indem nun vorgesehen ist, dass zumindest eine, vorzugsweise mindestens zwei der Nuten des Vereinzlerelements sowohl mit einem Reibbereich als auch mit einem Gleitbereich der Rückhalteeinrichtung zusammenwirken, wird erreicht, dass bei gleicher Reibkontaktfläche bzw. gleicher Vorschubkraft eine reibbehaftete Führung des Blattguts über zwei Nuten erfolgt, wodurch die Gefahr des Verdrehens des Blattguts verringert wird. Die Reihenfolge der mit den einzelnen Nuten zusammenwirkenden Reib- und Gleitbereiche kann quer zur Transportrichtung betrachtet für unterschiedliche Nuten unterschiedlich sein und ist vorzugsweise für benachbarte Nuten entgegengesetzt. Im letztgenannten Fall heben sich die in jeder Nut auf das transportierte Blattgut wirkenden Drehmomente durch das in der jeweils benachbarten Nut erzeugte, in entgegengesetzter Richtung wirkende Drehmoment im wesentlichen auf, wodurch die Führungseigenschaften, des Reibvereinzlers zusätzlich verbessert werden.By now providing that at least one, preferably at least two, of the grooves of the singling element interact with both a friction area and with a sliding area of the retaining device, it is achieved that, with the same friction contact surface or the same feed force, the sheet material is guided with friction via two grooves, which reduces the risk of the sheet material twisting. The order of the friction and sliding areas interacting with the individual grooves, viewed transversely to the transport direction, can be different for different grooves and is preferably opposite for adjacent grooves. In the latter case, the torques acting in each groove on the sheet material being transported essentially cancel each other out due to the torque acting in the opposite direction in the respectively adjacent groove, whereby the guiding properties of the friction separator are additionally improved.
Vorzugsweise wird die Rückhalteeinrichtung durch ein oder mehrere Rückhalteräder gebildet, welche die Reib- und Gleitbereiche aufweisen. Dies ist insbesondere vorteilhaft, wenn auch das Vereinzlerelement als rotierende Vereinzlerwalze ausgebildet ist, wodurch der Reibverschleiß an den einzel- nen Bauelementen gering gehalten wird.The retaining device is preferably formed by one or more retaining wheels which have the friction and sliding areas. This is particularly advantageous if the singling element is also designed as a rotating singling roller, as a result of which the frictional wear on the individual components is kept low.
Nachfolgend wird die Erfindung beispielhaft unter Bezugnahme auf die beiliegenden Zeichnungen beschrieben. Dabei zeigt:The invention is described below by way of example with reference to the accompanying drawings. It shows:
Figur 1 in schematischer Weise einen Querschnitt eines Reibradvereinz- lers entlang der Vereinzlungsrichtung der Banknoten,FIG. 1 schematically shows a cross section of a friction wheel singler along the singling direction of the banknotes,
Figur 2 den Reibradvereinzier aus Figur 1 schematisch in Aufsicht nach dem Stand der Technik,FIG. 2 shows the friction wheel trim from FIG. 1 schematically in supervision according to the prior art,
Figur 3 den Reibradvereinzier aus Figur 1 schematisch in Aufsicht entsprechend der Erfindung, Figur 4a ausschnittsweise eine Frontansicht des Reibradvereinzlers gemäß Figuren 1 und 2 nach dem Stand der Technik, undFIG. 3 shows the friction wheel trim from FIG. 1 schematically in supervision according to the invention, FIG. 4a shows a detail of a front view of the friction wheel singler according to FIGS. 1 and 2 according to the prior art, and
Figur 4b ausschnittsweise eine Frontansicht des Reibradvereinzlers gemäß Figuren 1 und 3 nach der vorliegenden Erfindung.4b shows a detail of a front view of the friction wheel singler according to FIGS. 1 and 3 according to the present invention.
Der Reibradvereinzier gemäß Figur 1 ist im wesentlichen so konstruiert, wie es in der DE 100 08 135 AI beschrieben ist. Daher wird auf eine detaillierte Beschreibung dieser an sich bekannten Komponenten hier verzichtet.The friction wheel decoration according to FIG. 1 is essentially constructed as described in DE 100 08 135 AI. Therefore, a detailed description of these components known per se is omitted here.
Insbesondere besitzen die Vereinzlerwalze 1 und die Rückhalterolle 14 in an sich bekannter Weise Umf angsnuten 2, die versetzt zueinander angeordnet und in ihrer Breite so angepasst sind, dass die Rückhalterollen 14, die höhenverstellbar ausgebildet sind, zur Erhöhung der Reibkräfte in die Nuten der Vereinzlerwalze 1 eingreifen können.In particular, the singling roller 1 and the retaining roller 14 have circumferential grooves 2 in a manner known per se, which are arranged offset to one another and are adjusted in width so that the retaining rollers 14, which are adjustable in height, increase the frictional forces in the grooves of the singling roller 1 can intervene.
Dies ist in Figur 2 am Beispiel eines Reibradvereinzlers gemäß dem Stand der Technik in Aufsicht dargestellt. Zwei Rückhalterollen 14 besitzen jeweils einen reibbehafteten Reibbereich 14a und einen glatten Gleitbereich 14b von etwa gleicher Größe. Mit den Reibbereichen 14a und Gleitbereichen 14b greifen die Rückhalterollen 14 in die Umf angsnuten 2 der Vereinzlerwalze 1 ein. Dadurch ergeben sich beim Vereinzeln der jeweils untersten Banknote 5a des Banknotenstapels 5 jeweils zwei Linienkontakte der Banknote 5a zwischen den Rückhalterollen 14 und der Vereinzlerwalze 1 in jeder Umfangsnut 2. Je nachdem, ob es sich um einen Kontakt mit einem Reibbereich oder um einen Kontakt mit einem Gleitbereich handelt, spricht man auch von „Reibkante" bzw. „Gleitkante". Die Rückhalterolle 14 übt aufgrund ihrer Aufteilung in Reibbereiche 14a und Gleitbereiche 14b nur eine halb so große Reibkraft auf die zu vereinzelnde Banknote 5a aus, wie das Reibsegment 3 der Vereinzlerwalze 1, welches aus dem gleichen Reibmaterial besteht, wie die Reibbereiche 14a der Rückhal- terolle 14. Als Reibmaterial eignet sich insbesondere Gieß-Polyurethan. Demgegenüber ist die Vereinzlerwalze 1 im übrigen genau wie die Gleitbereiche 14b des Rückhalterads 14 aus einem Kunststoff mit niedrigem Reibwert gefertigt.This is shown in FIG. 2 using the example of a friction wheel singler according to the prior art in supervision. Two retention rollers 14 each have a friction area 14a and a smooth sliding area 14b of approximately the same size. With the friction areas 14a and sliding areas 14b, the retaining rollers 14 engage in the circumferential grooves 2 of the singling roller 1. This results in the separation of the lowest banknote 5a of the banknote stack 5 in each case two line contacts of the banknote 5a between the retaining rollers 14 and the singling roller 1 in each circumferential groove 2. Depending on whether it is a contact with a friction area or a contact with a Sliding area, one also speaks of "friction edge" or "sliding edge". Due to its division into friction areas 14a and sliding areas 14b, the retaining roller 14 exerts only half the frictional force on the banknote 5a to be separated, as does the friction segment 3 of the singling roller 1, which consists of the same friction material as the friction regions 14a of the retaining roller 14. Cast polyurethane is particularly suitable as the friction material. In contrast, the separating roller 1 is made from a plastic with a low coefficient of friction, just like the sliding areas 14b of the retaining wheel 14.
Die Vereinzelung des in das Eingabefach 16 des Reibradvereinzlers gelegten Banknotenstapels 5 geschieht wie folgt: die unterste, als nächste zu vereinzelnde Banknote 5a liegt mit ihrer Vorderkante an der Vereinzlerwalze 1 an. Die Kraft, mit der der im Blattgutspeicher 16, der hier als schräges Leitblech ausgebildet ist, abgelegte Banknotenstapel 5 auf die Vereinzlerwalze 1 wirkt, wird allein durch die Schwerkraft bestimmt und hängt daher vom Gewicht und damit im wesentlichen von der Höhe des Bankknotenstapels 5 ab.The banknote stack 5 placed in the input compartment 16 of the friction wheel singler is separated as follows: the bottom banknote 5a to be separated next lies against the singler roll 1 with its front edge. The force with which the stack of banknotes 5 deposited in the sheet material storage 16, which is designed here as an inclined baffle plate, acts on the singling roller 1 is determined solely by gravity and therefore depends on the weight and thus essentially on the height of the bank knot stack 5.
Mit Hilfe der ebenfalls mit Reibsegmenten behafteten Vorschubrollen 18 werden die Banknoten vorzugsweise mit einer Geschwindigkeit zum Ver- einzlerspalt 19 geschoben, die der Transportgeschwindigkeit der Banknote nach erfolgter Vereinzelung entspricht. Der Vereinzlerspalt 19 wird dabei durch die sich gegenüberliegenden Oberflächenbereiche der Vereinzlerwalze 1 und der Rückhalterolle 14 gebildet.With the aid of the feed rollers 18, which are also fraught with friction segments, the banknotes are preferably pushed to the singling gap 19 at a speed which corresponds to the transport speed of the banknote after separation. The singling gap 19 is formed by the opposing surface areas of the singling roll 1 and the retaining roller 14.
Wenn die Vereinzlerwalze 1 sich durch die Justiereinrichtung 15 gesteuert soweit gedreht hat, dass der Bereich des Reibsegments 3 in eine wirksame Stellung, das heißt in den Bereich des Vereinzlerspalts 19, gedreht ist, überwiegt die Vorschubkraft deutlich die Rückhaltekraft, so dass ein zu vereinzelndes Blatt 5a durch den Veeinzlerspalt 19 gefördert wird. Wenn sich im Verlauf der weiteren Drehung der Vereinzlerwalze 1 das Reibsegment 3 aus dem Bereich des Vereinzlerspalts 19 herausbewegt, so wird die als nächstes anliegende Banknote zurückgehalten, bis das Reibsegment 3 der Vereinzlerwalze wieder am Vereinzlerspalt 19 wirksam wird.When the singling roller 1 has rotated controlled by the adjusting device 15 to such an extent that the area of the friction segment 3 is turned into an effective position, that is to say in the area of the singling gap 19, the feed force clearly outweighs the retaining force, so that a sheet to be singled out 5a is promoted through the Veeinzlerspalt 19. If in If the further rotation of the singling roller 1 moves the friction segment 3 out of the area of the singling gap 19, the next banknote is held back until the friction segment 3 of the singling roll becomes effective again at the singling gap 19.
Figur 2 zeigt den Reibradvereinzier mit zwei nach dem Stand der Technik ausgebildeten Rückhalterollen 14. Bei einer Quervereinzelung, bei welcher die Banknoten mit ihren breiteren Längskanten am Vereinzlerspalt 19 anliegen, wirken beide Rückhalterollen 14 auf das zu vereinzelnde Blatt 5a ein. Ein von einer Rückhalterolle auf die Banknote ausgeübtes Drehmoment wird von der anderen Rückhalterolle kompensiert. Bei der Vereinzelung im Längsformat, bei dem die Banknoten mit ihrer schmaleren Querkante am Vereinzlungsspalt 19 anliegen, kann es jedoch vorkommen, dass die Banknoten nur an einer der beiden Rückhalterollen 14 anliegen. Da die dabei wir- kende Vorschubkraft nicht mittig auf die zu vereinzelnde Banknote einwirken wird, übt sie auf die Banknote zusätzlich zur Vorschubkraft auch ein Drehmoment senkrecht zur Vorschubrichtung aus, welches in diesem Falle aber nicht durch eine zweite Rückhalterolle kompensiert wird. Dadurch kann es zum Verklemmen der Banknote im Vereinzlerspalt 19 oder dahinter kommen.FIG. 2 shows the friction wheel decoration with two retaining rollers 14 designed according to the prior art. In the case of a transverse isolation, in which the banknotes lie against the separating gap 19 with their wider longitudinal edges, both retaining rollers 14 act on the sheet 5a to be separated. A torque exerted on the banknote by one retaining roller is compensated for by the other retaining roller. In the case of singling in the longitudinal format, in which the banknotes lie with their narrower transverse edges against the singling gap 19, it can happen, however, that the banknotes only abut one of the two retention rollers 14. Since the feed force acting on it does not act centrally on the banknote to be separated, it also exerts a torque perpendicular to the feed direction on the banknote, which in this case is not compensated for by a second retaining roller. This can result in the banknote jamming in the separating gap 19 or behind it.
Figur 3 zeigt die schematische Ansicht des Reibradvereinzlers gemäß Figur 2, jedoch mit erfindungsgemäß abgewandelten Rückhalterollen 14. Demnach besitzen die Rückhalterollen 14 zwar nach wie vor sowohl Reibbereiche 14a als auch Gleitbereiche 14b. Jedoch greifen die Rückhalterollen 14 in jede Nut 2 der Vereinzlerwalze 1 sowohl mit einer Reibfläche 14a als auch mit einer Gleitfläche 14b ein, so dass sie mit jeder Nut 2 sowohl eine Reibkante als auch eine Gleitkante bilden. Dies ist in Figur 4b im Vergleich zum Stand der Technik gemäß Figur 4a nochmals im Detail herausgestellt, wobei die Figuren 4a und 4b jeweils nur eine Vereinzlerwalze 1 mit zwei Umf angsnuten 2 und eine Rückhalterolle 14 mit Reibbereichen 14a und Gleitbereichen 14b zeigen, die mit den Umfangs- nuten 2 der Vereinzlerwalze 1 zusammenwirken.FIG. 3 shows the schematic view of the friction wheel singler according to FIG. 2, but with retaining rollers 14 modified according to the invention. Accordingly, the retaining rollers 14 still have both friction areas 14a and sliding areas 14b. However, the retaining rollers 14 engage in each groove 2 of the singling roller 1 with both a friction surface 14a and with a sliding surface 14b, so that they form both a friction edge and a sliding edge with each groove 2. This is shown in detail in FIG. 4b in comparison to the prior art in accordance with FIG. 4a, FIGS. 4a and 4b each only showing a singling roller 1 with two circumferential grooves 2 and a retaining roller 14 with friction areas 14a and sliding areas 14b, which correspond to the Interact circumferential grooves 2 of the singling roller 1.
Während die Rückhalterolle 14 gemäß dem Stand der Technik nach Figur 4a einen einzigen Reibbereich aufweist, der mit einer der beiden Umfangsnute 2 der Vereinzlerwalze 1 zusammenwirkt, und einen einzigen Gleitbereich 14b aufweist, der mit der entsprechend anderen der beiden Umfangsnuten 2 der Vereinzlerwalze 1 zusammenwirkt, sind die Reibbereiche 14a und Gleitbereiche 14b bei der Rückhalterolle 14 gemäß der Erfindung nach Figur 4b so aufgeteilt, dass mit jeder Umfangsnut 2 der Vereinzlerwalze 1 sowohl ein Reibbereich 14a als auch ein Gleitbereich 14b der Rückhalterolle 14 zusam- menwirken. Im Gegensatz zum Stand der Technik, bei dem die Rückhalterolle 14 mit jeder der Umfangsnuten 2 der Vereinzlerwalze 1 entweder zwei Gleitkanten oder zwei Reibkanten bildet, bildet somit die erfindungsgemäße Rückhalterolle 14 mit jeder Umfangsnut 2 der Vereinzlerwalze 1 eine Gleitkante und eine Reibkante. Dadurch wird ein etwaiges, senkrecht zur Transportrichtung der Banknoten BN wirkendes Drehmoment kompensiert. Wenn die Reihenfolge Gleitkante/ Reibkante bei zueinander benachbarten Umfangsnuten 2 umgekehrt ist, gleicht sich das erzeugte Drehmoment bezogen auf die zwischen den Umfangsnuten liegende Mittelebene A exakt aus. Bezu szeichenliste4a has a single friction area which interacts with one of the two circumferential grooves 2 of the singling roller 1 and a single sliding area 14b which cooperates with the corresponding other of the two circumferential grooves 2 of the singling roller 1, 4b, the friction areas 14a and sliding areas 14b are divided in such a way that both a friction area 14a and a sliding area 14b of the retaining roller 14 interact with each circumferential groove 2 of the singling roller 1. In contrast to the prior art, in which the retaining roller 14 forms either two sliding edges or two friction edges with each of the peripheral grooves 2 of the singling roller 1, the retaining roller 14 according to the invention thus forms a sliding edge and a friction edge with each peripheral groove 2 of the singling roller 1. This compensates for any torque acting perpendicular to the transport direction of the bank notes BN. If the order of the sliding edge / friction edge is reversed in the case of circumferential grooves 2 which are adjacent to one another, the torque generated is exactly equalized in relation to the central plane A lying between the circumferential grooves. For the list of characters
1 Vereinzlerelement, Vereinzlerwalze1 singling element, singling roller
2 Nut, Umfangsnut 3 Reibelement2 groove, circumferential groove 3 friction element
5 Blattgutstapel5 stacks of sheets
5a zu vereinzelndes Blatt5a sheet to be separated
14 Rückhalteeinrichtung, Rückhalterolle 14a Reibbereich 14b Gleitbereich14 Retaining device, retaining roller 14a friction area 14b sliding area
15 Justier einrichtung15 Adjustment device
16 Blattgutspeicher16 sheets storage
18 Vorschubrolle18 feed roller
19 Vereinzlerspalt19 separator gap
A Mittelebene BN Banknote A middle level BN banknote

Claims

P a t e n t a S p r ü c h e P atenta S speech
1. Reibvereinzier zum Vereinzeln von blattförmigen Wertdokumenten (5), insbesondere Banknoten (BN), umfassend:1. Friction decorator for separating sheet-shaped documents of value (5), in particular banknotes (BN), comprising:
einen Blattgutspeicher (16) zum Aufnehmen eines Blattgutstapels (5),a sheet material store (16) for receiving a sheet material stack (5),
eine Abzugseinrichtung mit einem Vereinzlerelement (1), wobei das Vereinzlerelement zur Kontaktierung und Förderung der aus dem Blattgutspeicher (16) zu vereinzelnden Blätter (5a) ein oder mehrerea withdrawal device with a singling element (1), the singling element for contacting and conveying the sheets (5a) to be singled out from the sheet material storage (16)
Reibelemente (3) mit zumindest einer in Transportrichtung der zu vereinzelnden Blätter (5a) verlaufenden Nut (2) aufweist, undHas friction elements (3) with at least one groove (2) running in the transport direction of the sheets (5a) to be separated, and
eine Rückhalteeinrichtung (14), die mit dem Vereinzlerelement (1) einen Vereinzlerspalt (19) bildet, durch den zu vereinzelnde Blättera retaining device (14), which forms a singling gap (19) with the singling element (1), through the sheets to be singled out
(5a) aus dem Blattgutspeicher (16) gefördert werden, und die mit der Nut (2) des Vereinzlerelements (1) zusammenwirkende Reibbereiche (14a) mit hohem Reibkoeffizienten und Gleitbereiche (14b) mit niedrigem Reibkoeffizienten besitzt,(5a) are conveyed out of the sheet material store (16) and have the friction areas (14a) with a high coefficient of friction and sliding areas (14b) with a low coefficient of friction, which cooperate with the groove (2) of the singling element (1),
dadurch gekennzeichnet, dasscharacterized in that
die Nut (2) des Vereinzlerelements (1) sowohl mit einem Reibbereich (14a) als auch mit einem Gleitbereich (14b) der Rückhalteeinrichtung (14) zusammenwirkt.the groove (2) of the singling element (1) interacts both with a friction area (14a) and with a sliding area (14b) of the retaining device (14).
2. Reibvereinzier nach Anspruch 1, dadurch gekennzeichnet, dass das Vereinzlerelement (1) mehrere in Transportrichtung der zu vereinzelnden Blätter (5a) verlaufenden Nuten (2) aufweist, und dass mindestens zwei, insbe- sondere alle Nuten (2) des Vereinzlerelements (1) jeweils sowohl mit einem Reibbereich (14a) als auch mit einem Gleitbereich (14b) der Rückhalteeinrichtung (14) zusammenwirken.2. Friction separator according to claim 1, characterized in that the separating element (1) has a plurality of grooves (2) running in the transport direction of the leaves (5a) to be separated, and that at least two, in particular in particular, all the grooves (2) of the singling element (1) each interact with both a friction area (14a) and a sliding area (14b) of the retaining device (14).
3. Reib vereinzier nach Anspruch 2, dadurch gekennzeichnet, dass die quer zur Transportrichtung betrachtete Reihenfolge von mit den Nuten (2) zusammenwirkenden Reib- und Gleitbereichen (14a, 14b) für unterschiedliche Nuten (2) unterschiedlich ist.3. Friction decorating according to claim 2, characterized in that the transverse to the transport direction considered order of interacting with the grooves (2) friction and sliding areas (14a, 14b) for different grooves (2) is different.
4. Reibvereinzier nach Anspruch 3, dadurch gekennzeichnet, dass die Reihenfolge für benachbarte Nuten (2) entgegengesetzt ist.4. Reibvereinzier according to claim 3, characterized in that the order for adjacent grooves (2) is opposite.
5. Reibvereinzier nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Rückhalteeinrichtung (14) ein oder mehrere Rückhalteräder umfasst, welche die Reibbereiche (14a) und Gleitbereiche (14b) aufweisen.5. Friction decoration according to one of claims 1 to 4, characterized in that the retaining device (14) comprises one or more retaining wheels which have the friction areas (14a) and sliding areas (14b).
6. Reibvereinzier nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass das Ver einzlerelement (1) eine Vereinzlerwalze ist. 6. Reibvereinzier according to any one of claims 1 to 5, characterized in that the United singler element (1) is a singler roll.
EP03732491A 2002-06-03 2003-05-28 Device for separating sheet-type products Expired - Lifetime EP1513753B1 (en)

Applications Claiming Priority (3)

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DE10224486A DE10224486A1 (en) 2002-06-03 2002-06-03 Device for separating sheet material
DE10224486 2002-06-03
PCT/EP2003/005644 WO2003101870A1 (en) 2002-06-03 2003-05-28 Device for separating sheet-type products

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EP1513753B1 EP1513753B1 (en) 2006-06-28

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EP (1) EP1513753B1 (en)
JP (1) JP2005528302A (en)
KR (1) KR100966702B1 (en)
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AT (1) ATE331681T1 (en)
AU (1) AU2003238425A1 (en)
DE (2) DE10224486A1 (en)
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DE50304068D1 (en) 2006-08-10
CN1315706C (en) 2007-05-16
US20060103066A1 (en) 2006-05-18
ATE331681T1 (en) 2006-07-15
KR20040111703A (en) 2004-12-31
JP2005528302A (en) 2005-09-22
CN1659091A (en) 2005-08-24
AU2003238425A1 (en) 2003-12-19
EP1513753B1 (en) 2006-06-28
ES2263001T3 (en) 2006-12-01
KR100966702B1 (en) 2010-06-29
WO2003101870A1 (en) 2003-12-11
US7419155B2 (en) 2008-09-02
DE10224486A1 (en) 2003-12-11

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