EP1095885A2 - Device for separating flat products with suction unit - Google Patents

Device for separating flat products with suction unit Download PDF

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Publication number
EP1095885A2
EP1095885A2 EP00123307A EP00123307A EP1095885A2 EP 1095885 A2 EP1095885 A2 EP 1095885A2 EP 00123307 A EP00123307 A EP 00123307A EP 00123307 A EP00123307 A EP 00123307A EP 1095885 A2 EP1095885 A2 EP 1095885A2
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EP
European Patent Office
Prior art keywords
openings
suction
rotor
conveyed
separating flat
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
EP00123307A
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German (de)
French (fr)
Other versions
EP1095885B1 (en
EP1095885A3 (en
Inventor
Wilhelm Mitzel
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
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Giesecke and Devrient GmbH
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Publication of EP1095885A2 publication Critical patent/EP1095885A2/en
Publication of EP1095885A3 publication Critical patent/EP1095885A3/en
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Publication of EP1095885B1 publication Critical patent/EP1095885B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00—Separating articles from piles
    • B65H3/08—Separating articles from piles using pneumatic force
    • B65H3/10—Suction rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/30—Suction means
    • B65H2406/33—Rotary suction means, e.g. roller, cylinder or drum
    • B65H2406/332—Details on suction openings
    • 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
    • B65H2406/36—Means for producing, distributing or controlling suction
    • B65H2406/361—Means for producing, distributing or controlling suction distributing vacuum from stationary element to movable element
    • B65H2406/3614—Means for producing, distributing or controlling suction distributing vacuum from stationary element to movable element involving a shoe in sliding contact with an inner section of the periphery of a rotating element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/19—Specific article or web
    • B65H2701/1912—Banknotes, bills and cheques or the like

Definitions

  • the present invention relates to a device for separating flat goods with a suction device, with openings in the Suction device an area is defined within the suction device conveyed goods to be separated.
  • Devices for separating flat goods with a suction drum as a suction device exist in essentially from a stator and a rotor.
  • the stator has sectoral, in the circumferential direction of the suction chambers, which with a negative pressure are acted upon.
  • the rotor has suction openings that the suction spaces of the stator are assigned and the material to be conveyed individually by one Pull off the stack of conveyed goods and feed them to a downstream transport system.
  • the material to be separated is within a rotation angle of the rotating rotor, within which the suction spaces of the Cover stator and the associated suction openings of the rotor, d. H.
  • the stator and rotor work on the so-called rotary vane principle.
  • the Suction openings of the rotor usually lie along a surface line of the rotor and are activated at the same time.
  • the suction openings can also have a slight offset to the surface line, so that they with little time delay in succession when rotating the rotor can be opened, causing an inclination of the material to be separated can be avoided.
  • Banknotes, receipts and record carriers are particularly important under flat goods understood as well as paper sheets.
  • the known separating devices in particular have the Disadvantage that a high noise level due to the operation of the suction device is generated, which is perceived as very uncomfortable.
  • the Noise generated by the suction device is mainly activated which causes suction openings. Further noise components arise from the impact or clap of the material to be conveyed onto the suction device, if this is subtracted from the stack of goods to be separated.
  • the object of the present invention is therefore to provide a device for Specify flat goods to be conveyed with a suction device, at the at least that generated by the suction openings during operation Noise is reduced so that the resulting noise level is reduced becomes.
  • the invention is based on the consideration that it is offset Arrangement of the suction openings of the suction device to at least one partial cancellation of the noise when the activation of the Suction openings comes.
  • FIG. 1 shows a device for separating flat goods to be conveyed a suction drum in a simplified schematic diagram.
  • the suction drum is formed by a stator 10 and a rotor 11. Moreover there are a guide device 15 and a restraint device 16.
  • a stack of conveyed goods, not shown, is placed on the guide device 15 and the material to be conveyed is separated by means of the suction drum into the conveyed by arrow 17 and to a direction not shown Transport device passed on, which the separated goods to further processing in the direction indicated by arrow 18.
  • the retaining device 16 serves for conveyed goods from the stack of conveyed goods.
  • the stator 10 has an opening 30 through which the stator 10 is connected to a vacuum system can be connected.
  • the stator 10 has a suction chamber which is delimited by an opening edge 13 and a closing edge 14 is. To illustrate the structure of the stator 10, this is again in Figure 2 a) and c), in plan view of the suction chamber and as a section shown.
  • the rotor 11, which runs along surface lines 20, 21, 22, 23 suction openings has, rotates in the direction indicated by arrow 12.
  • suction openings along the surface lines 20, 21, 22, 23 of the rotor 11 in Figure 3 a) shown in a plan view of the suction openings.
  • the suction openings in the rotor 11 arranged as shown in Figure 3 c).
  • the surface lines 20, 21, 22, 23 is opposite the other suction openings the respective surface line shifted by a distance d, so that the shifted Suction openings also lie on surface lines 20 ', 21', 22 ', 23', which are shifted from the surface lines 20, 21, 22, 23 by the distance d.
  • Deviating from the shift shown is also a sectoral one Shift in the other direction possible. It is also possible that other suction openings compared to the second suction openings move.
  • the distance d from the Geometric sizes of the suction drum such as the circumference of the stator or the inner circumference of the rotor and size of the suction openings and in particular the Rotation speed of the rotor results.
  • a further reduction of those in the device for separation noise generated by flat conveyed material is by activating the suction openings of the individual at different times To reach generatrices.
  • One possibility is, as in Figure 2 b) shown, the opening edge 13 and the closing edge 14 of the suction chamber to arrange the stator at an angle, d. H. not along surface lines.
  • the individual suction openings along the respective Surface lines 20, 21, 22, 23 or 20 ', 21', 22 ', 23' activated one after the other, which is a pulling apart of the remaining negative and positive pressure half-waves corresponds.
  • This measure also has the advantage that a Sloping the flat conveyed goods when pulling them off the stack can be prevented because the material to be conveyed is directed against a guide device can be directed.
  • FIG. 5 a is the opening edge 13 of the stator 10, the one marked with the reference symbol K. Is of particular interest. By breaking the edge K becomes a softer when activating the suction openings of the rotor 11 Transition of the pressure ratios reached, whereby less noise is generated become.
  • FIG. 5 b a flattening m of the edge K perpendicular to the opening edge 13, or as in FIG. 5 c) obliquely in a ratio of m: n, with a ratio of 1: 3 as has shown particularly advantageous.
  • suction openings are not individually in the To produce rotor 11 itself. Rather, it is possible to have a recess in the Manufacture area of the suction openings and for example with a To provide dovetail groove. A correspondingly grooved Use with suction openings can then be made of any material, such as. B. made of rubber and introduced into the rotor 11.
  • suction spaces in the stator 10 or the required offset activation of the suction openings, for example due to an offset of the suction chamber or the suction chambers of the stator 10 to realize.
  • Another possibility provides for the required temporal activation of the suction openings by an offset of both the suction openings as well as the suction space or the suction spaces realize.
  • a further improvement in the reduction of noise during separation can be achieved if the generation, as described above, cannot be compensated for of noise through the first and last openings 20 'and 23 in addition is steamed. This can be done, for example, through active sound absorption can be achieved.
  • the generation is under active sound insulation understood by anti-phase sound signals that lead to cancellation of the sound signals causing the noise.
  • this is done in the vicinity of the point of origin of the noise, for example in the vicinity of the auxiliary line 13 ' A loudspeaker attached to the sound signals causing the noise antiphase sound signal generated.
  • An anti-phase sound signal To be able to generate can use a microphone to cause the noise Sound signal for the first and last openings 20 'and 23 detected become.
  • the detected signals mirrored on the signal axis, d. H. the amplitude values of the signal are provided with the opposite sign. This can be done immediately at the Detection of the signal take place or later in the anti-phase playback. Several signals can also be recorded and averaged.
  • the electrical Signals from the microphone can be digitized and the one determined
  • the waveform can then be stored in a memory, e.g. B. an EPROM or EEPROM.
  • the signal stored in the memory can then read out from the memory and converted back into an analog signal become.
  • the analog signal can be amplified by means of an amplifier and are reproduced by means of the loudspeaker.
  • the rotor 11 of the device can be used since this is usually a device for determining the angular position and thus the position of the openings 20 'to 23.
  • the output signal of the device to determine the angular position is used to read out the data of the antiphase signal stored in the memory Taxes.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)

Abstract

The flat item separation device has a suction drum provided with suction openings (20-23) within a region of the suction drum which is brought into contact with the flat item to be separated. The suction openings are offset so that a time offset is provided between activation of one part of the openings (20'-23'), for partial elimination of the noise generated by the activation of the suction openings.

Description

Die vorliegende Erfindung betrifft eine Vorrichtung zum Vereinzeln von flachem Fördergut mit einer Saugeinrichtung, wobei über Öffnungen in der Saugeinrichtung ein Bereich festgelegt ist, innerhalb die Saugeinrichtung das zu vereinzelnde Fördergut erfaßt.The present invention relates to a device for separating flat goods with a suction device, with openings in the Suction device an area is defined within the suction device conveyed goods to be separated.

Einrichtungen zum Vereinzeln von flachem Fördergut mit einer Saugtrommel als Saugeinrichtung, wie z. B. aus DE 29 05 278 C3 bekannt, bestehen im wesentlichen aus einem Stator und einem Rotor. Der Stator weist sektorielle, in Umfangsrichtung verlaufende Saugräume auf, die mit einem Unterdruck beaufschlagt sind. Der Rotor weist Saugöffnungen auf, die den Saugräumen des Stators jeweils zugeordnet sind und das Fördergut einzeln von einem Fördergutstapel abziehen und einem nachgeschalteten Transportsystem zuführen. Das zu vereinzelnde Fördergut wird dabei innerhalb eines Drehwinkels des rotierenden Rotors erfaßt, innerhalb dessen sich die Saugräume des Stators und die zugeordneten Saugöffnungen des Rotors überdecken, d. h. Stator und Rotor arbeiten nach dem sogenannten Drehschieberprinzip. Die Saugöffnungen des Rotors liegen dabei üblicherweise entlang einer Mantellinie des Rotors und werden gleichzeitig aktiviert. Die Saugöffnungen können auch einen leichten Versatz zu der Mantellinie aufweisen, so daß sie mit geringer zeitlicher Verzögerung nacheinander bei der Drehung des Rotors geöffnet werden, wodurch ein Schrägstellen des zu vereinzelnden Förderguts vermieden werden kann. Ebenso ist es bekannt, in sektorieller Richtung mehrere Saugöffnungen hintereinander anzuordnen, die bei der Drehung des Rotors nacheinander aktiviert werden, wodurch mehrere Saugöffnungen des Rotors in sektorieller Richtung gleichzeitig aktiv sind, solange sie sich im Bereich der Saugräume des Stators befinden.Devices for separating flat goods with a suction drum as a suction device, such as. B. from DE 29 05 278 C3, exist in essentially from a stator and a rotor. The stator has sectoral, in the circumferential direction of the suction chambers, which with a negative pressure are acted upon. The rotor has suction openings that the suction spaces of the stator are assigned and the material to be conveyed individually by one Pull off the stack of conveyed goods and feed them to a downstream transport system. The material to be separated is within a rotation angle of the rotating rotor, within which the suction spaces of the Cover stator and the associated suction openings of the rotor, d. H. The stator and rotor work on the so-called rotary vane principle. The Suction openings of the rotor usually lie along a surface line of the rotor and are activated at the same time. The suction openings can also have a slight offset to the surface line, so that they with little time delay in succession when rotating the rotor can be opened, causing an inclination of the material to be separated can be avoided. It is also known in a sectoral direction arrange several suction openings one after the other, which during rotation of the rotor can be activated one after the other, creating several suction openings of the rotor are simultaneously active in the sectoral direction, as long as they are in the Area of the suction spaces of the stator.

Unter flachem Fördergut werden insbesondere Banknoten, Belege, Aufzeichnungsträger sowie Papierblätter verstanden.Banknotes, receipts and record carriers are particularly important under flat goods understood as well as paper sheets.

Die bekannten Vereinzelungseinrichtungen weisen aber insbesondere den Nachteil auf, daß durch den Betrieb der Saugeinrichtung ein hoher Geräuschpegel erzeugt wird, der als sehr unangenehm empfunden wird. Der durch die Saugeinrichtung erzeugte Lärm wird vor allem durch die Aktivierung der Saugöffnungen verursacht. Weitere Lärmanteile entstehen durch das Anschlagen oder Anklatschen des Fördergutes an die Saugeinrichtung, wenn dieses zur Vereinzelung vom Fördergutstapel abgezogen wird.However, the known separating devices in particular have the Disadvantage that a high noise level due to the operation of the suction device is generated, which is perceived as very uncomfortable. The Noise generated by the suction device is mainly activated which causes suction openings. Further noise components arise from the impact or clap of the material to be conveyed onto the suction device, if this is subtracted from the stack of goods to be separated.

Aufgabe der vorliegenden Erfindung ist es deshalb, eine Vorrichtung zum Vereinzeln von flachem Fördergut mit einer Saugeinrichtung anzugeben, bei der mindestens der durch die Saugöffnungen während des Betriebs erzeugte Lärm verringert wird, so daß der resultierende Geräuschpegel reduziert wird.The object of the present invention is therefore to provide a device for Specify flat goods to be conveyed with a suction device, at the at least that generated by the suction openings during operation Noise is reduced so that the resulting noise level is reduced becomes.

Diese Aufgabe wird erfindungsgemäß durch die Merkmale des Anspruchs 1 gelöst.This object is achieved by the features of claim 1 solved.

Die Erfindung geht dabei von der Überlegung aus, daß es durch eine versetzte Anordnung der Saugöffnungen der Saugeinrichtung zu einer zumindest teilweisen Auslöschung des Lärms bei der versetzten Aktivierung der Saugöffnungen kommt. The invention is based on the consideration that it is offset Arrangement of the suction openings of the suction device to at least one partial cancellation of the noise when the activation of the Suction openings comes.

Weitere Vorteile der vorliegenden Erfindung ergeben sich aus den abhängigen Ansprüchen sowie der nachfolgenden Beschreibung von Ausführungsformen anhand von Figuren. In den Figuren sind nur die für das Verständnis der vorliegenden Erfindung relevanten Bestandteile dargestellt. Gleiche Bestandteile in verschiedenen Figuren weisen die gleichen Bezugszeichen auf.Further advantages of the present invention result from the dependent ones Claims and the following description of embodiments based on figures. In the figures there are only those for understanding relevant components of the present invention. Same components in different figures have the same reference numerals.

Es zeigt:

Figur 1
eine Ausführungsform einer Vorrichtung zum Vereinzeln von flachem Fördergut mit einer Saugtrommel, in einer vereinfachten Prinzipdarstellung,
Figur 2
zwei Ausführungsformen eines Stators für die Saugtrommel der Vorrichtung zum Vereinzeln von flachem Fördergut, in einer vereinfachten Prinzipdarstellung,
Figur 3
vier Ausführungsformen von Saugöffnungen für einen Rotor für die Saugtrommel der Vorrichtung zum Vereinzeln von flachem Fördergut, in einer vereinfachten Prinzipdarstellung,
Figur 4
die prinzipiellen Druckverhältnisse an der Saugtrommel im Bereich der Erfassung des flachen Förderguts während des Betriebs der Vorrichtung zum Vereinzeln von flachem Fördergut, und
Figur 5
drei Ausführungsformen von einen Saugraum des Stators begrenzenden Statorkanten.
It shows:
Figure 1
1 shows an embodiment of a device for separating flat goods to be conveyed with a suction drum, in a simplified basic illustration,
Figure 2
two embodiments of a stator for the suction drum of the device for separating flat goods to be conveyed, in a simplified schematic diagram,
Figure 3
four embodiments of suction openings for a rotor for the suction drum of the device for separating flat goods to be conveyed, in a simplified basic illustration,
Figure 4
the basic pressure conditions on the suction drum in the area of detection of the flat conveyed material during operation of the device for separating flat conveyed material, and
Figure 5
three embodiments of stator edges delimiting a suction space of the stator.

Figur 1 zeigt eine Vorrichtung zum Vereinzeln von flachem Fördergut mit einer Saugtrommel in einer vereinfachten Prinzipdarstellung. Die Saugtrommel wird von einem Stator 10 und einem Rotor 11 gebildet. Außerdem sind eine Leiteinrichtung 15 und eine Rückhalteeinrichtung 16 vorhanden. An die Leiteinrichtung 15 wird ein nicht dargestellter Fördergutstapel angelegt und das Fördergut wird mittels der Saugtrommel vereinzelt, in die durch Pfeil 17 angegebene Richtung befördert und an eine nicht dargestellte Transporteinrichtung weitergegeben, welche das vereinzelte Fördergut zur weiteren Bearbeitung in die durch Pfeil 18 angegebene Richtung transportiert. Zur Vermeidung von Doppelabzug oder unbeabsichtigtem Abzug von Fördergut vom Fördergutstapel dient die Rückhalteeinrichtung 16.FIG. 1 shows a device for separating flat goods to be conveyed a suction drum in a simplified schematic diagram. The suction drum is formed by a stator 10 and a rotor 11. Moreover there are a guide device 15 and a restraint device 16. A stack of conveyed goods, not shown, is placed on the guide device 15 and the material to be conveyed is separated by means of the suction drum into the conveyed by arrow 17 and to a direction not shown Transport device passed on, which the separated goods to further processing in the direction indicated by arrow 18. To avoid double or unintentional deduction from The retaining device 16 serves for conveyed goods from the stack of conveyed goods.

Der Stator 10 weist eine Öffnung 30 auf, über die der Stator 10 an ein Unterdrucksystem anschließbar ist. Darüber hinaus weist der Stator 10 eine Saugkammer auf, die durch eine Öffnungskante 13 und eine Schließkante 14 begrenzt ist. Zur Verdeutlichung der Aufbaus des Stators 10 ist dieser nochmals in Figur 2 a) und c), in Draufsicht auf die Saugkammer sowie als Schnitt dargestellt.The stator 10 has an opening 30 through which the stator 10 is connected to a vacuum system can be connected. In addition, the stator 10 has a suction chamber which is delimited by an opening edge 13 and a closing edge 14 is. To illustrate the structure of the stator 10, this is again in Figure 2 a) and c), in plan view of the suction chamber and as a section shown.

Der Rotor 11, der entlang von Mantellinien 20, 21, 22, 23 Saugöffnungen aufweist, dreht sich in die durch Pfeil 12 angegebene Richtung. Zur Verdeutlichung sind die Saugöffnungen entlang der Mantellinien 20, 21, 22, 23 des Rotors 11 in Figur 3 a) in einer Draufsicht auf die Saugöffnungen dargestellt. Sobald die Saugöffnungen einer Mantellinie 20, 21, 22, 23 die Öffnungskante 13 des Stators 10 passiert haben, werden die Saugöffnungen aktiviert, da sie durch die Saugkammer des Stators 10 mit dem durch das Unterdrucksystem erzeugten Unterdruck beaufschlagt werden; das zu vereinzelnde Fördergut wird erfaßt und von der Saugtrommel vereinzelt. The rotor 11, which runs along surface lines 20, 21, 22, 23 suction openings has, rotates in the direction indicated by arrow 12. For clarification are the suction openings along the surface lines 20, 21, 22, 23 of the rotor 11 in Figure 3 a) shown in a plan view of the suction openings. As soon as the suction openings of a surface line 20, 21, 22, 23 the opening edge 13 of the stator 10 have passed, the suction openings are activated, as it passes through the suction chamber of the stator 10 with that through the vacuum system generated negative pressure are applied; the one to be separated Conveyed goods are recorded and separated by the suction drum.

Die bisher beschriebene Funktionsweise der Vorrichtung zum Vereinzeln von flachem Blattgut ist an sich bekannt und wird beispielsweise in der eingangs genannten DE 29 05 278 C3 näher beschrieben.The previously described mode of operation of the separating device of flat sheet material is known per se and is used for example in the beginning DE 29 05 278 C3 described in more detail.

Während des Betriebs der Vorrichtung zur Vereinzelung von flachem Fördergut ergibt sich an der Saugtrommel eine Druckverteilung wie in Figur 4 a) im Prinzip dargestellt. Durch die Aktivierung der Saugöffnungen entlang der Mantellienien 20, 21, 22, 23 tritt jeweils zuerst ein Unterdruck auf, der dem durch das Unterdrucksystem erzeugten Unterdruck entspricht. Als physikalisch bedingte Gegenwirkung entsteht ein entgegengesetzter Überdruck, der betragsmäßig in etwa dem Unterdruck entspricht. Die derart erzeugte Schwingung nimmt rasch gegen null hin ab. Für die Saugöffnungen entlang der Mantellinien 20, 21, 22, 23 ist der zeitliche Ablauf der entstehenden Gesamtschwingung, wie sie sich aus der Drehung des Rotors 11 der Saugtrommel ergibt, dargestellt, wobei zur Vereinfachung für jede Reihe von Saugöffnungen entlang der Mantellinien 20, 21, 22, 23 nur jeweils die erste Vollwelle, bestehend aus einer Unterdruck- und einer Überdruckhalbwelle, gezeigt ist. Durch die dargestellte Druckverteilung wird Lärm erzeugt, dessen Pegel von einer Bedienperson als störend empfunden werden kann.During the operation of the device for separating flat conveyed goods there is a pressure distribution on the suction drum as in FIG. 4 a) shown in principle. By activating the suction openings along of the mantellias 20, 21, 22, 23, a vacuum occurs first, the corresponds to the negative pressure generated by the negative pressure system. As counteraction caused by physical factors creates an opposite overpressure, whose amount corresponds approximately to the negative pressure. The so generated Vibration decreases rapidly towards zero. For the suction openings along the surface lines 20, 21, 22, 23 is the chronological sequence of the resulting Total vibration as it results from the rotation of the rotor 11 Suction drum results, shown, being for simplification for each row of Suction openings along the surface lines 20, 21, 22, 23 only the first one Full wave, consisting of a vacuum and an overpressure half wave, is shown. Noise is generated by the pressure distribution shown Level can be perceived as disturbing by an operator.

Zur Reduzierung des Lärmpelgels werden die Saugöffnungen im Rotor 11 wie in Figur 3 c) dargestellt angeordnet. Jede zweite Saugöffnung entlang der Mantellinien 20, 21, 22, 23 wird gegenüber den anderen Saugöffnungen der jeweiligen Mantellinie um einen Abstand d verschoben, so daß die verschobenen Saugöffnungen ebenfalls auf Mantellinien 20', 21', 22', 23' liegen, die von den Mantellinien 20, 21, 22, 23 um den Abstand d verschoben sind. Abweichend von der dargestellten Verschiebung ist auch eine sektorielle Verschiebung in die andere Richtung möglich. Ebenso ist es möglich, die anderen Saugöffnungen gegenüber den jeweils zweiten Saugöffnungen zu verschieben.To reduce the noise level, the suction openings in the rotor 11 arranged as shown in Figure 3 c). Along every second suction opening the surface lines 20, 21, 22, 23 is opposite the other suction openings the respective surface line shifted by a distance d, so that the shifted Suction openings also lie on surface lines 20 ', 21', 22 ', 23', which are shifted from the surface lines 20, 21, 22, 23 by the distance d. Deviating from the shift shown is also a sectoral one Shift in the other direction possible. It is also possible that other suction openings compared to the second suction openings move.

Durch die oben beschriebene Verschiebung jeder zweiten Saugöffnung um den Abstand d ergibt sich an der Saugtrommel eine zeitlich Druckverteilung wie in Figur 4 b) im Prinzip dargestellt, wobei sich der Abstand d aus den geometrischen Größen der Saugtrommel, wie Umfang des Stators bzw. Innenumfang desRotors und Größe der Saugöffungen sowie insbesondere der Drehgeschwindigkeit des Rotors ergibt. Bei einem Innendurchmesser des Rotors bzw. Durchmessers des Stators von 63 mm und bei 20 U/s des Rotors ergibt sich ein Abstand für d von ca. 2 mm.By shifting every second suction opening by the above the distance d results in a temporal pressure distribution on the suction drum as shown in Figure 4 b) in principle, the distance d from the Geometric sizes of the suction drum, such as the circumference of the stator or the inner circumference of the rotor and size of the suction openings and in particular the Rotation speed of the rotor results. With an inner diameter of Rotor or diameter of the stator of 63 mm and at 20 U / s of the rotor there is a distance for d of approx. 2 mm.

Für die auf den Mantellinien 20, 21, 22, 23 verbliebenen Saugöffnungen entlang der sektoriellen Linien I, III, V, VII ergibt sich eine zeitliche Druckverteilung, die der in Figur 4 a) dargestellten entspricht. Durch die um den Abstand d verschobenen Saugöffnungen auf den Mantellinien 20', 21', 22', 23', die entlang der sektoriellen Linien II, IV, VI, VIII angeordnet sind, ergibt sich eine Druckverteilung, die der Druckverteilung der Saugöffnungen entlang der sektoriellen Linien I, III, V, VII um eine Haibwelle voreilt. Daraus resultiert eine Auslöschung der Druckwellen, bis auf die erste, vorauseilende Unterdruckhalbwelle der um den Abstand d gegenüber der Mantellinie 20 verschobenen Saugöffnungen der Mantellinie 20' und die letzte Überdruckhalbwelle der Saugöffnungen der letzten Mantellinie 23, woraus eine deutliche Reduzierung des Lärmpegels resultiert.For the suction openings remaining on the surface lines 20, 21, 22, 23 along sectorial lines I, III, V, VII result in a temporal pressure distribution, which corresponds to that shown in Figure 4 a). By the distance d shifted suction openings on the surface lines 20 ', 21', 22 ', 23', which are arranged along the sectoral lines II, IV, VI, VIII results a pressure distribution that corresponds to the pressure distribution of the suction openings the sectoral lines I, III, V, VII advanced by a half wave. This results an extinction of the pressure waves, except for the first, leading vacuum half-wave the shifted by the distance d from the surface line 20 Suction openings of the surface line 20 'and the last overpressure half-wave the suction openings of the last surface line 23, from which a clear The result is a reduction in the noise level.

Eine weitere Reduzierung der durch die in der Vorrichtung zur Vereinzelung von flachem Fördergut verwendeten Saugtrommel erzeugten Geräusche ist durch eine zeitlich versetzte Aktivierung der Saugöffnungen der einzelnen Mantellinien zu erreichen. Eine Möglichkeit ist es, wie in Figur 2 b) dargestellt, die Öffnungskante 13 und die Schließkante 14 der Saugkammer des Stators schräg anzuordnen, d. h. nicht entlang von Mantellinien. Bei der Rotation des Rotors werden die einzelnen Saugöffnungen entlang der jeweiligen Mantellinien 20, 21, 22, 23 bzw. 20', 21', 22', 23' nacheinander aktiviert, was einem Auseinanderziehen der verbleibenden Unter- und Überdruckhalbwellen entspricht. Diese Maßnahme hat außerdem den Vorteil, daß ein Schrägstellen des flachen Förderguts beim Abziehen vom Fördergutstapel verhindert werden kann, da das Fördergut gezielt gegen eine Leiteinrichtung gelenkt werden kann.A further reduction of those in the device for separation noise generated by flat conveyed material is by activating the suction openings of the individual at different times To reach generatrices. One possibility is, as in Figure 2 b) shown, the opening edge 13 and the closing edge 14 of the suction chamber to arrange the stator at an angle, d. H. not along surface lines. In the Rotation of the rotor, the individual suction openings along the respective Surface lines 20, 21, 22, 23 or 20 ', 21', 22 ', 23' activated one after the other, which is a pulling apart of the remaining negative and positive pressure half-waves corresponds. This measure also has the advantage that a Sloping the flat conveyed goods when pulling them off the stack can be prevented because the material to be conveyed is directed against a guide device can be directed.

Eine andere Möglichkeit für eine weitere Geräuschreduzierung bietet die Verwendung unterschiedlich großer Saugöffnungen im Rotor 11, wie in den Figuren 3 b) und d) dargestellt. Dies wird beispielsweise dadurch erreicht, daß die beiden zuerst aktivierten Reihen von Saugöffnungen (d. h. Mantellinien 20, 21 bzw. 20', 21') gegenüber den Saugöffnungen entlang der Mantellinien 22, 23 bzw. 22', 23' verkleinert werden. Werden die Saugöffnungen nämlich so groß gewählt, daß ein Abzug des flachen Förderguts vom Fördergutstapel möglich ist, neigt das flache Fördergut dazu, gegen den Rotor 11 zu schlagen, wodurch eine weitere Geräuschkomponente erzeugt wird. Durch die Verkleinerung der zuerst aktivierten Saugöffnungen kann erreicht werden, daß das flache Fördergut sich ohne wesentliche zusätzliche Geräuscherzeugung an den Rotor 11 annähert bzw. sich an diesen anschmiegt. Dies wird auch erreicht, wenn zusätzliche Saugöffnungen von den ersten Saugöffnungen entlang der Mantellinien 20 bzw. 20' angeordnet werden. Dieses zusätzliche Saugöffnungen können beispielsweise auch kleiner sein oder es können weniger zusätzliche Saugöffnungen vorgesehen werden.Another option for further noise reduction is the Use of differently sized suction openings in the rotor 11, as in the Figures 3 b) and d) shown. This is achieved, for example, by that the two rows of suction openings (i.e. surface lines 20, 21 or 20 ', 21') opposite the suction openings along the surface lines 22, 23 or 22 ', 23' can be reduced. Will the suction openings namely chosen so large that a deduction of the flat conveyed goods from the stack of conveyed goods is possible, the flat material to be conveyed tends towards the rotor 11 to strike, whereby another noise component is generated. By reducing the size of the suction ports that were activated first you can achieve be that the flat material is conveyed without significant additional noise approximates to the rotor 11 or clings to it. This is also achieved when there are additional suction openings from the first Suction openings along the surface lines 20 and 20 'are arranged. This additional suction openings can also be smaller, for example or fewer additional suction openings can be provided.

Eine zusätzliche Gräuschreduzierung ist möglich, wenn die Öffnungskante 13 des Stators 10 so justiert ist, daß eine Aktivierung der ersten Saugöffnungen des Rotors 11 erst erfolgt, nachdem die Saugöffnungen die Vorderkante der Leiteinrichtung 15 passiert haben. Dadurch können zusätzliche, durch den Unterdruck erzeugte Verwirbelungen vermieden werden, wodurch die erwünschte Geräuschreduzierung erreicht wird. In Figur 1 ist die dazu nötige Stellung der Öffnungskante 13 mittels der Hilfslinie 13' angedeutet.An additional noise reduction is possible if the opening edge 13 of the stator 10 is adjusted so that activation of the first suction openings of the rotor 11 takes place only after the suction openings the front edge have passed the guide device 15. This allows additional, through the turbulence generated by the negative pressure can be avoided, thereby the desired noise reduction is achieved. In Figure 1 is the necessary Position of the opening edge 13 indicated by the auxiliary line 13 '.

Durch die Veränderung insbesondere Öffnungskante 13 des Stators 10 ist eine weitere Geräuschreduzierung möglich. In Figur 5 a) ist die Öffnungskante 13 des Stators 10 dargestellt, wobei die mit dem Bezugszeichen K gekennzeichnete Stelle von besonderem Interesse ist. Durch Brechen der Kante K wird beim Aktivieren der Saugöffnungen des Rotors 11 ein weicherer Übergang der Druckverhältinisse erreicht, wodurch weniger Geräusche erzeugt werden. Dazu kann wie in Figur 5 b) eine Abflachung m der Kante K senkrecht zur Öffnungskante 13 vorgenommen werden, oder wie in Figur 5 c) schräg in einem Verhältnis von m:n, wobei sich ein Verhältnis von 1:3 als besonders vorteilhaft herausgestellt hat.Due to the change in particular the opening edge 13 of the stator 10 further noise reduction possible. In Figure 5 a) is the opening edge 13 of the stator 10, the one marked with the reference symbol K. Is of particular interest. By breaking the edge K becomes a softer when activating the suction openings of the rotor 11 Transition of the pressure ratios reached, whereby less noise is generated become. For this purpose, as in FIG. 5 b), a flattening m of the edge K perpendicular to the opening edge 13, or as in FIG. 5 c) obliquely in a ratio of m: n, with a ratio of 1: 3 as has shown particularly advantageous.

Neben der beispielhaft beschriebenen Ausführungsform sind viele Abwandlungen denkbar und möglich.In addition to the exemplary embodiment described, there are many modifications conceivable and possible.

Beispielsweise kann es vorgesehen sein, die Saugöffnungen nicht einzeln im Rotor 11 selbst zu erzeugen. Vielmehr ist es möglich eine Aussparung im Bereich der Saugöffnungen herzustellen und beispielsweise mit einer Schwalbenschwanznut zu versehen. Ein entsprechend gegenläufig genuteter Einsatz mit Saugöffnungen kann dann aus einem beliebigen Material, wie z. B. aus Gummi, hergestellt werden und in den Rotor 11 eingebracht werden.For example, it can be provided that the suction openings are not individually in the To produce rotor 11 itself. Rather, it is possible to have a recess in the Manufacture area of the suction openings and for example with a To provide dovetail groove. A correspondingly grooved Use with suction openings can then be made of any material, such as. B. made of rubber and introduced into the rotor 11.

Ebenso kann es vorgesehen sein, mehrere Saugräume im Stator 10 anzuordnen oder die benötigte versetzte Aktivierung der Saugöffnungen beispielsweise durch einen Versatz des Saugraums oder der Saugräume des Stators 10 zu realisieren. Bei einer weiteren Möglichkeit ist es vorgesehen, die benötigte zeitliche Aktivierung der Saugöffnungen durch einen Versatz von sowohl der Saugöffnungen als auch des Saugraums bzw. der Saugräume zu realisieren.It can also be provided to arrange a plurality of suction spaces in the stator 10 or the required offset activation of the suction openings, for example due to an offset of the suction chamber or the suction chambers of the stator 10 to realize. Another possibility provides for the required temporal activation of the suction openings by an offset of both the suction openings as well as the suction space or the suction spaces realize.

Es ist offensichtlich, daß das bisher beschriebene Prinzip der Auslöschung von störenden Geräuschen auch für Vorrichtungen zum Vereinzeln von flachem Fördergut geeingnet ist, die statt mit einer Saugtrommel mit einer anderen Saugeinrichtung, wie einem Saugband oder Saugschieber, arbeiten. Bei derartigen Saugeinrichtungen wird statt einer Rotationsbewegung eine Linearbewegung zum Vereinzeln des flachen Förderguts eingesetzt. Entscheidend für die vorliegende Bewegung ist nämlich die im Zusammenhang mit den Figuren 3 und 4 erläuterte Auslöschung der störenden Geräusche aufgurnd der versetzten Anordnung der Saugöffnungen. Ein entsprechender Versatz kann somit auch für die Saugöffnungen eines Saugbands oder eines Saugschiebers vorgesehen werden. Ebenso sind die anderen zur Geräuschreduzierung beschriebenen Maßnahmen, wie die Verwendung von Saugöffnungen mit geringerem Durchmesser, bei Saugeinrichtungen anwendbar, die mit einer Linearbewegung arbeiten.It is obvious that the principle of extinction described so far of disturbing noises also for devices for separating flat Conveyed goods are suitable, instead of one suction drum with another Suction device, such as a suction belt or suction slide, work. In such suction devices instead of a rotational movement Linear movement used to separate the flat material to be conveyed. Crucial for the movement in question is namely related with the figures 3 and 4 explained cancellation of the disturbing noises based on the staggered arrangement of the suction openings. A corresponding one Offset can thus also for the suction openings of a suction belt or Suction slide are provided. The others are also for noise reduction measures described, such as the use of Suction openings with a smaller diameter, applicable for suction devices, that work with a linear movement.

Eine weitere Verbesserung der Verringerung von Lärm bei der Vereinzelung läßt sich erreichen, wenn die, wie oben beschrieben, nicht ausgleichbare Erzeugung von Lärm durch die ersten und letzten Öffnungen 20' und 23 zusätzlich gedämpft wird. Dies kann beispielsweise durch eine aktive Schalldämpfung erreicht werden. Unter aktiver Schallbedämfpung wird die Erzeugung von gegenphasigen Schallsignalen verstanden, die zu einer Auslöschung der den Lärm verursachenden Schallsignale führen. A further improvement in the reduction of noise during separation can be achieved if the generation, as described above, cannot be compensated for of noise through the first and last openings 20 'and 23 in addition is steamed. This can be done, for example, through active sound absorption can be achieved. The generation is under active sound insulation understood by anti-phase sound signals that lead to cancellation of the sound signals causing the noise.

Bei der erfindungsgemäßen Vorrichtung wird dazu in der Nähe des Entstehungsorts des Lärms, also beispielsweise in der Nähe der Hilfslinie 13', ein Lautsprecher angebracht, der ein zu den den Lärm verursachenden Schallsignalen gegenphasiges Schallsignal erzeugt. Um ein gegenphasiges Schallsignal erzeugen zu können, kann mittels eines Mikrophons das den Lärm verursachende Schallsignal für die ersten und letzten Öffnungen 20' und 23 erfaßt werden. Um die Gegenphasigkeit zu erreichen werden die erfaßten Signale an der Signalachse gespiegelt, d. h. die Amplitudenwerte des Signals werden mit dem umgekehrten Vorzeichen versehen. Dies kann sofort bei der Erfassung des Signals erfolgen oder später bei der gegenphasigen Wiedergabe. Es können auch mehrere Signale erfaßt und gemittelt werden. Die elektrischen Signale des Mikrophons können digitalisiert werden und der so bestimmte Signalverlauf kann dann in einem Speicher, z. B. einem EPROM oder EEPROM, gespeichert werden. Das im Speicher abgelegte Signal kann dann aus dem Speicher ausgelesen werden und in ein analoges Signal rückgewandelt werden. Das analoge Signal kann mittels eines Verstärkers verstärkt werden und mittels des Lautsprechers wiedergegeben werden.In the device according to the invention, this is done in the vicinity of the point of origin of the noise, for example in the vicinity of the auxiliary line 13 ' A loudspeaker attached to the sound signals causing the noise antiphase sound signal generated. An anti-phase sound signal To be able to generate, can use a microphone to cause the noise Sound signal for the first and last openings 20 'and 23 detected become. In order to achieve the opposite phase, the detected signals mirrored on the signal axis, d. H. the amplitude values of the signal are provided with the opposite sign. This can be done immediately at the Detection of the signal take place or later in the anti-phase playback. Several signals can also be recorded and averaged. The electrical Signals from the microphone can be digitized and the one determined The waveform can then be stored in a memory, e.g. B. an EPROM or EEPROM. The signal stored in the memory can then read out from the memory and converted back into an analog signal become. The analog signal can be amplified by means of an amplifier and are reproduced by means of the loudspeaker.

Zur exakten Synchronisierung der Wiedergabe des gegenphasigen Signals kann der Rotor 11 der Vorrichtung verwendet werden, da dieser in der Regel eine Einrichtung zur Bestimmung der Winkelposition und damit der Position der Öffnungen 20' bis 23 aufweist. Das Ausgangssignal der Einrichtung zur Bestimmung der Winkelposition wird verwendet, um den Auslesevorgang der im Speicher gespeicherten Daten des gegenphasigen Signals zu steuern.For exact synchronization of the reproduction of the antiphase signal the rotor 11 of the device can be used since this is usually a device for determining the angular position and thus the position of the openings 20 'to 23. The output signal of the device to determine the angular position is used to read out the data of the antiphase signal stored in the memory Taxes.

Versuche haben gezeigt, daß die Verwendung von gegenphasigen Signalen zur aktiven Schalldämpfung insbesondere bei den ersten Öffnungen 20' zu guten Resultaten führt.Experiments have shown that the use of antiphase signals for active sound absorption, in particular at the first openings 20 ' leads to good results.

Claims (11)

Vorrichtung zum Vereinzeln von flachem Fördergut mit einer Saugeinrichtung (10,11) weleche Öffnungen (20,21,22,23;13,14,30) aufweist, die einen Bereich festgelegen, innerhalb dessen die Saugeinrichtung (10,11) das zu vereinzelnde Fördergut erfaßt, dadurch gekennzeichnet, daß durch eine versetzte Anordnung der Öffnungen (20',21',22',23';13,14,30) der Saugeinrichtung (10,11) eine zeitlich versetzte Aktivierung eines Teils der Öffnungen (20',21',22',23') der Saugeinrichtung (10,11) erfolgt, wodurch zumindest eine teilweise Auslöschung der bei der Aktivierung der Öffnungen (20,21,22,23) der Saugeinrichtung (10,11) erzeugten Geräusche erreicht wird.Device for separating flat goods to be conveyed with a suction device (10, 11) which has openings (20, 21, 22, 23; 13, 14, 30) which define an area within which the suction device (10, 11) separates the material to be separated Conveyed goods, characterized in that a staggered arrangement of the openings (20 ', 21', 22 ', 23'; 13, 14, 30) of the suction device (10, 11) activates part of the openings (20 ') at different times. , 21 ', 22', 23 ') of the suction device (10, 11) takes place, whereby at least a partial extinction of the noises generated when the openings (20, 21, 22, 23) of the suction device (10, 11) are activated . Vorrichtung zum Vereinzeln von flachem Fördergut nach Anspruch 1, dadurch gekennzeichnet, daß die Saugeinrichtung (10,11) einen Stator (10) und einen eine Saugtrommel bildenden Rotor (11) aufweisen, wobei über Öffnungen (20,21,22,23;13,14,30) in Rotor (11) und Stator (10) ein Bereich festgelegt ist, innerhalb dessen der Rotor (11) das zu vereinzelnde Fördergut erfaßt, wobei durch eine in sektorieller Richtung versetzte Anordnung der Öffnungen (20',21',22',23';13,14,30) des Rotors (11) und/oder des Stators (10) die zeitlich versetzte Aktivierung des Teils der Öffnungen (20',21',22',23') des Rotors (11) erfolgt, wodurch die zumindest teilweise Auslöschung der bei der Aktivierung der Öffnungen (20,21,22,23) des Rotors (11) erzeugten Geräusche erreicht wird.Device for separating flat goods to be conveyed according to Claim 1, characterized in that the suction device (10, 11) has a stator (10) and a rotor (11) forming a suction drum, openings (20, 21, 22, 23; 13 , 14,30) in the rotor (11) and stator (10) an area is defined, within which the rotor (11) detects the material to be separated, whereby the openings (20 ', 21', 22 ', 23'; 13, 14, 30) of the rotor (11) and / or of the stator (10) the activation of the part of the openings (20 ', 21', 22 ', 23') of the rotor (11 ) takes place, whereby the at least partial cancellation of the noises generated when the openings (20, 21, 22, 23) of the rotor (11) are activated. Vorrichtung zum Vereinzeln von flachem Fördergut nach Anspruch 2, dadurch gekennzeichnet, daß die Öffnungen (20',21',22',23';13,14,30) um einen Abstand (d) verschoben sind, der im wesentlichen durch die Geschwindigkeit der Saugeinrichtung (10,11) vorgegeben ist.Device for separating flat goods to be conveyed according to claim 2, characterized in that the openings (20 ', 21', 22 ', 23'; 13, 14, 30) are displaced by a distance (d) which is essentially due to the speed the suction device (10, 11) is specified. Vorrichtung zum Vereinzeln von flachem Fördergut nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß im wesentlichen die Hälfte aller Öffnungen (20,21,22,23) der Saugeinrichtung (10,11) zeitlich versetzt aktiviert werden.Device for separating flat goods to be conveyed according to one of Claims 1 to 3, characterized in that essentially half of all openings (20, 21, 22, 23) of the suction device (10, 11) are activated at different times. Vorrichtung zum Vereinzeln von flachem Fördergut nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß Öffnungen (20,21;20',21') der Saugeinrichtung (10,11), die zuerst aktiviert werden, eine geringere Größe aufweisen als Öffnungen (22,23;22',23') der Saugeinrichtung (10,11), die zu einem späteren Zeitpunkt aktiviert werden.Device for separating flat goods to be conveyed according to one of Claims 1 to 4, characterized in that openings (20, 21; 20 ', 21') of the suction device (10, 11) which are activated first are smaller in size than openings ( 22, 23; 22 ', 23') of the suction device (10, 11), which are activated at a later time. Vorrichtung zum Vereinzeln von flachem Fördergut nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Öffnungen (20,21,22,23; 20',21',22',23') des Saugernrichtung (10,11) einzeln nacheinander aktiviert werden.Device for separating flat goods to be conveyed according to one of claims 1 to 6, characterized in that the openings (20, 21, 22, 23; 20 ', 21', 22 ', 23') of the suction device direction (10, 11) individually one after the other to be activated. Vorrichtung zum Vereinzeln von flachem Fördergut nach den Ansprüchen 2 und 6, dadurch gekennzeichnet, daß die Öffnungen (20,21,22,23;20',21',22',23') des Rotors (11) parallel zu Mantellinien des Rotors (11) angeordnet sind und die Öffnung oder Öffnungen (13,14,30) des Stators (10) schräg zu Mantellinien des Stators (10) angeordnet sind.Device for separating flat conveyed material according to claims 2 and 6, characterized in that the openings (20, 21, 22, 23; 20 ', 21', 22 ', 23') of the rotor (11) are parallel to the surface lines of the rotor (11) are arranged and the opening or openings (13, 14, 30) of the stator (10) are arranged obliquely to the generatrices of the stator (10). Vorrichtung zum Vereinzeln von flachem Fördergut nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß zumindest eine Kante (K) der Öffnung oder Öffnungen (13,14,30) der Saugeinrichtung (10,11) gebrochen ist. Device for separating flat goods to be conveyed according to one of Claims 1 to 7, characterized in that at least one edge (K) of the opening or openings (13, 14, 30) of the suction device (10, 11) is broken. Vorrichtung zum Vereinzeln von flachem Fördergut nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß eine Einrichtung zur aktiven Schallbedämpfung vorgesehen ist.Device for separating flat goods to be conveyed according to one of claims 1 to 8, characterized in that a device for active sound attenuation is provided. Vorrichtung zum Vereinzeln von flachem Fördergut nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß die Einrichtung zur aktiven Schallbedämpfung ein Schallsignal erzeugt, das einen gegenphasigen Verlauf zum durch die ersten Öffnungen (20') verursachten Schallsignal aufweist.Device for separating flat goods to be conveyed according to one of claims 1 to 9, characterized in that the device for active sound attenuation generates a sound signal which has a phase opposite phase to the sound signal caused by the first openings (20 '). Vorrichtung zum Vereinzeln von flachem Fördergut nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß die Einrichtung zur aktiven Schallbedämpfung ein Schallsignal erzeugt, das einen gegenphasigen Verlauf zum durch die letzten Öffnungen (23) verursachten Schallsignal aufweist.Device for separating flat goods to be conveyed according to one of Claims 1 to 10, characterized in that the device for active sound attenuation generates a sound signal which has a phase opposite to the sound signal caused by the last openings (23).
EP00123307A 1999-10-26 2000-10-26 Device for separating flat products with suction unit Expired - Lifetime EP1095885B1 (en)

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DE102009049514A1 (en) * 2009-10-15 2011-04-21 Giesecke & Devrient Gmbh Separator e.g. friction wheel separator, for separating bank notes, has rotatory extraction device whose separating element performs periodic separation of sheet material stacks after two or more rotations of rotatory extraction device
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DE102009049515A1 (en) * 2009-10-15 2011-04-21 Giesecke & Devrient Gmbh Separator e.g. friction wheel separator, for separating bank notes, has separating element cooperating with restraining apparatuses to separate sheet material stacks from input parts during actuation of extraction device in two directions
CN110255233A (en) * 2019-06-14 2019-09-20 国网河北省电力有限公司物资分公司 A kind of two coupon invoice separators
CN110255233B (en) * 2019-06-14 2024-03-22 国网河北省电力有限公司物资分公司 Two-linked invoice separating device

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EP1095885B1 (en) 2006-02-01
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DE19953968A1 (en) 2001-05-03
DE50012156D1 (en) 2006-04-13
ATE316928T1 (en) 2006-02-15

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