EP1038812B1 - Method and device for controlling a stream of documents - Google Patents
Method and device for controlling a stream of documents Download PDFInfo
- Publication number
- EP1038812B1 EP1038812B1 EP00250056A EP00250056A EP1038812B1 EP 1038812 B1 EP1038812 B1 EP 1038812B1 EP 00250056 A EP00250056 A EP 00250056A EP 00250056 A EP00250056 A EP 00250056A EP 1038812 B1 EP1038812 B1 EP 1038812B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- area
- singularization
- sensor
- print medium
- transport
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title claims description 13
- 238000011156 evaluation Methods 0.000 claims description 10
- 238000001514 detection method Methods 0.000 claims description 7
- 230000011514 reflex Effects 0.000 claims description 4
- 238000012805 post-processing Methods 0.000 claims 2
- 230000007704 transition Effects 0.000 claims 2
- 238000004891 communication Methods 0.000 claims 1
- 238000000926 separation method Methods 0.000 description 29
- 238000012546 transfer Methods 0.000 description 7
- 238000012545 processing Methods 0.000 description 6
- 230000003287 optical effect Effects 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 239000000969 carrier Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07B—TICKET-ISSUING APPARATUS; FARE-REGISTERING APPARATUS; FRANKING APPARATUS
- G07B17/00—Franking apparatus
- G07B17/00459—Details relating to mailpieces in a franking system
- G07B17/00467—Transporting mailpieces
-
- 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
- B65H3/0653—Rollers or like rotary separators for separating substantially vertically stacked articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H5/00—Feeding articles separated from piles; Feeding articles to machines
- B65H5/34—Varying the phase of feed relative to the receiving machine
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/30—Orientation, displacement, position of the handled material
- B65H2301/32—Orientation of handled material
- B65H2301/321—Standing on edge
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2513/00—Dynamic entities; Timing aspects
- B65H2513/10—Speed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2513/00—Dynamic entities; Timing aspects
- B65H2513/20—Acceleration or deceleration
-
- 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
- B65H2701/1916—Envelopes and articles of mail
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S209/00—Classifying, separating, and assorting solids
- Y10S209/90—Sorting flat-type mail
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S209/00—Classifying, separating, and assorting solids
- Y10S209/91—Feed hopper
Definitions
- the invention relates to a method for flow control of pressure carriers, especially letters, in a separating device of a mail processing system.
- the letters can have different thicknesses as well as the permissible Show formats in irregular order.
- the processing like this any letters that arise are referred to as mixed mail operations.
- a method for operating a high-speed mail processing machine for processing mixed mail with different thicknesses and different dimensions is known, see EP 0 503 502 B1.
- the method includes the steps of moving each piece of mail to a weighing station, weighing it, and then printing the value stamp. These steps are activated and controlled by a drive controller in accordance with several sensors.
- the sensors are distributed across the machine, some of which are optical sensors.
- the method also causes a special sensor processor to access the sensors and to inform the drive control of their state after they have been activated beforehand.
- the access step includes periodically executing a master cycle so as to access each sensor in a first group during each cycle and access each sensor in a second group only for some, but not all, cycles.
- the sensor data are written into a RAM which the control can access.
- An arrangement for pre-separating printing media is also known, see DE 196 05 017 A1, in which letters are placed one behind the other as a stack of letters standing on one edge and the letters are fed laterally away from the stack of letters to a separating device.
- the letters are arranged between a spring-loaded pressure bracket and at least one drive roller and a guide plate inclined slightly backwards.
- the base for the letters and the guide plate are orthogonal to each other.
- a device for separating printing media in particular letters, according to the subsequently published DE 198 36 235.8 and FIGS. 1 to 4 was found.
- the letters A are also stacked one behind the other in the separating device B with an edge on a lower guide plate 2 between a spring-loaded pressure bracket 21 and drive roller combinations 3, 4 and a guide plate 1 which is inclined slightly to the rear.
- the drive rollers with their cylindrical enveloping surfaces protrude through openings in the guide plate 1 and the letters A are individually transported away laterally by the former.
- the separating device B is divided into a pre-separating area I with two drive roller combinations 3, 4 in the start-stop mode and into a separating area II with elements 6, 7, 77 for separating with continuous passage.
- a sensor 10 for printing medium detection and ejection means 9 in the form of a pair of ejection rollers 91, 92.
- the elements 6, 7, 77 for singulation consist of a drive belt combination 6, a driven counter-roller combination 7 adapted to this and an upstream, likewise adapted Slide lever combination 77.
- the sensor 10b is arranged in the area of the counter roller combination 7 and is electrically connected to a drive 5 for the two drive roller combinations 3, 4 in such a way that the drive 5 is switched on in each case when the print carrier end is detected.
- the ejector roller pair 91, 92 consists of a driven ejector roller 91 and an driven ejector roller 92.
- the driven ejector roller 91 is fastened on a rotatable axis 911 behind the guide plate 1 and partially protrudes through an adapted opening thereof.
- the driven ejection roller 92 is fastened on a likewise rotatable axis 921 in front of the guide plate 1, see in particular FIGS. 2 and 3.
- the axis 921 is rotatably supported on a rotatably spring-mounted support lever 93.
- a common drive 8 is provided for the drive belt combination 6, the counter roller combination 7 together with the slide lever combination 77 and the ejection roller pair 91, 92.
- the purpose of the invention is to improve the performance properties.
- the invention has for its object the letter throughput in a Separating device of the type described above to the Throughput of the successor devices, in particular a subsequent one Postage meter to adapt.
- the invention is based on the consideration that there must be a minimum distance from the leading edge of the letter to the leading edge of the letter in the franking machine, which corresponds to the longest franking impression plus print head width plus a security measure. This is at least the distance for small, short letters. For larger or longer letters, the distance from the leading edge to the leading edge is necessarily greater than this minimum distance. In this case it is important to keep the distance between the long letter and the following letter as small as possible or to achieve the greatest possible throughput.
- the invention solves this problem by controlling the transport speed in the individual passage areas of the letters in the separating device. Depending on the transport speed of the successor device, the transfer speed is adapted to this. This prevents congestion in the downstream device from this side.
- the transport speed in the separation area is set higher than the transfer speed until a letter has reached the ejection area. This corresponds to the accelerated transport in the separation area. This serves to increase the throughput in general and in particular to reduce the distance between successive letters.
- the transport speed in the separating area is set to less than or equal to the transfer speed as long as a letter is in the ejection area. This corresponds to normal transport in the separation area. This prevents the formation of jams in front of the discharge area.
- the transport speed in the pre-separation area is set greater than the transfer speed and greater than the increased transport speed in the separation area, as long as there is no letter in the entrance area of the separation area. This corresponds to the accelerated transport in the pre-separation area.
- the transport speed in the pre-separation area is set to less than or equal to the normal transport speed in the separation area when a letter has reached the entrance area of the separation area and there is no further letter in front of the ejection area. This corresponds to normal transport in the pre-separation area. This prevents the formation of jams in the entrance area of the separation area.
- the transport speed is set to zero in the pre-separation area as long as there is a letter in the entrance area and in the other areas of the separation area. This corresponds to the stop or idle operation in the pre-separation area. This prevents jamming or multiple deductions.
- the transfer speed to the successor device that is the transport speed that is generated with the pair of ejection rollers, is continuously monitored. It is always kept lower than or equal to the transport speed set in the successor device, but somewhat higher - approximately 10% - than the transport speed in the initial area of the separation area, that is the transport speed generated with the elements for separation. Furthermore, in the pre-separation area the transport speed, which is generated with the drive rollers during accelerated transport, is set correspondingly higher - approximately 30% - than the transfer speed in the separation area.
- the letter is scanned in the entrance area of the singling area and immediately after the singling in order to derive corresponding control signals for the drive in the pre-singling area and in the singling area in connection with further scanning results.
- the letter is scanned in the ejection area of the separating device in order to derive corresponding control signals for the pre-separating area, the separating area and the successor device.
- the sensor 10a is expediently used as a reflex sensor executed. With this sensor 10a it is determined whether the letter A in this area has penetrated or is still in it Area.
- an optical sensor 10b is arranged in a correspondingly adapted opening of the rear guide plate 1 immediately after the drive belt combination 6 or counter roller combination 7.
- the sensor 10b is also expediently designed as a reflex sensor. This sensor 10b determines whether a letter A is present in this area.
- the ejection roller pair 91, 92 is arranged at such a distance after the counter roller combination 7 that the shortest possible letter A is already detected by the former before the latter has left the latter.
- a sensor 13 for measuring the transport speed of the letter A is arranged on the rotatable axis 921 for the driven ejection roller 92 at this point.
- the sensor 13 is designed as an encoder, the output signal of which is compared by means of the evaluation circuit 15 with a signal corresponding to the transport speed in the downstream device 16 and from which a signal for controlling the common drive 8 in the separation area II and the drive 5 in the pre-separation area I is derived, see also Fig. 4 and 5.
- a letter A which passes the ejection roller pair 91, 92, is linearly moved by the driven ejection roller 91 by frictional engagement and also transmits its movement synchronously by frictional engagement to the resiliently adjustable driven ejection roller 92 as a rotary movement.
- the driven ejection roller 92 is firmly seated on the axis 921.
- a sensor 14 is also provided, which is arranged in the ejection area for the letters A immediately before or after the line of contact between the ejection roller pair 91, 92 in the guide plate 1.
- the sensor 14 is advantageously also designed as a reflex sensor. With the help of this sensor 14, it is recognized whether a letter A has reached or left the ejection area and, in addition, the current transport speed in the subsequent device 16 is queried via the evaluation circuit 15.
- the sensors 10a, 10b, 14 for letter scanning are connected to the evaluation circuit 15, the core of which is a microprocessor and a comparison circuit.
- the evaluation circuit 15 is bidirectionally connected to the successor device (s) 16, in particular its control processor (s).
- the follow-up device 16 can be a dynamic scale or / and a franking machine. Furthermore, the evaluation circuit 15 is connected to the drive 5 of the pre-separation area I and to the drive 8 of the separation area II for the purpose of emitting corresponding control signals.
- the output signals of the sensors 10a, 10b, 14 are linked in the evaluation circuit 15 in such a way that that the drive 5 in the pre-separation area I is set to accelerated transport when the sensor 10a does not recognize a letter A, that the drive 5 in the pre-separation area I is set to normal transport when the sensor 10a recognizes a letter A and the sensor 10b does not recognize a letter A.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Controlling Sheets Or Webs (AREA)
- Sorting Of Articles (AREA)
- Conveying Record Carriers (AREA)
- Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
Description
Die Erfindung betrifft ein Verfahren zur Durchlaufsteuerung von Druckträgem, insbesondere von Briefen, in einer Vereinzelungsvorrichtung eines Briefpostverarbeitungssystems.The invention relates to a method for flow control of pressure carriers, especially letters, in a separating device of a mail processing system.
Die Briefe können dabei unterschiedliche Dicke sowie die zulässigen Formate in unregelmäßiger Folge aufweisen. Die Verarbeitung derartig anfallender Briefe wird als Mischpostbetrieb bezeichnet.The letters can have different thicknesses as well as the permissible Show formats in irregular order. The processing like this any letters that arise are referred to as mixed mail operations.
Üblicherweise bestehen Briefpostverarbeitungssysteme aus:
- einer Vereinzelungsvorrichtung, in der die Briefe zeitlich nacheinander stapelweise angelegt, vereinzelt und bedarfsweise verschlossen werden,
- einer Frankier- und/oder Adressiermaschine mit optionaler integrierter oder vorgeordneter Waage
- und einer Ablagevorrichtung;
Es ist bei derartigen Briefpostverarbeitungssystemen problematisch, den größtmöglichen Durchsatz pro Zeiteinheit zu erzielen. In der Regel wird die Obergrenze für den Briefdurchsatz durch die Transport- und Druckgeschwindigkeit der Frankiermaschine bestimmt. Demzufolge ist es erstrebenswert, den Durchsatz in den vorgelagerten Einrichtungen dieser Obergrenze anzupassen.Mail processing systems usually consist of:
- a separating device in which the letters are stacked, separated and, if necessary, sealed in succession,
- a franking and / or addressing machine with optional integrated or upstream scale
- and a storage device;
It is problematic with such letter mail processing systems to achieve the highest possible throughput per unit of time. As a rule, the upper limit for letter throughput is determined by the transport and printing speed of the franking machine. As a result, it is desirable to adjust the throughput in the upstream facilities to this upper limit.
Es ist ein Verfahren zum Betreiben einer Hochgeschwindigkeits-Postbearbeitungsmaschine
zum Verarbeiten gemischter Post mit unterschiedlicher
Dicke und unterschiedlichen Abmessungen bekannt, siehe
EP 0 503 502 B1. Das Verfahren umfaßt die Schritte, jedes Postversandstück
zu einer Wägestation zu befördern, zu wiegen und dann den
Wertstempel aufzudrucken. Diese Schritte werden durch eine Antriebssteuerung
entsprechend mehreren Sensoren aktiviert und gesteuert.
Die Sensoren sind über die Maschine verteilt, wobei einige davon optische
Sensoren sind.
Bei dem Verfahren wird darüber hinaus ein spezieller Sensorprozessor
dazu veranlaßt, einen Zugriff auf die Sensoren vorzunehmen und deren
Zustand der Antriebssteuerung mitzuteilen, nachdem diese vorher aktiviert
worden sind. Der Zugriffsschritt umfaßt die periodische Ausführung
eines Hauptzyklusses, um so einen Zugriff auf jeden Sensor einer
ersten Gruppe während jedes Zyklusses vorzunehmen, und einen
Zugriff auf jeden Sensor einer zweiten Gruppe nur während einiger,
jedoch nicht aller Zyklen vorzunehmen. Die Sensordaten werden in ein
RAM eingeschrieben, auf welches die Ansteuerung zugreifen kann.A method for operating a high-speed mail processing machine for processing mixed mail with different thicknesses and different dimensions is known, see EP 0 503 502 B1. The method includes the steps of moving each piece of mail to a weighing station, weighing it, and then printing the value stamp. These steps are activated and controlled by a drive controller in accordance with several sensors. The sensors are distributed across the machine, some of which are optical sensors.
The method also causes a special sensor processor to access the sensors and to inform the drive control of their state after they have been activated beforehand. The access step includes periodically executing a master cycle so as to access each sensor in a first group during each cycle and access each sensor in a second group only for some, but not all, cycles. The sensor data are written into a RAM which the control can access.
Es ist weiterhin eine Anordnung zum Vorvereinzeln von Druckträgem
bekannt, siehe DE 196 05 017 A1, bei der Briefe auf einer Kante stehend
hintereinander als Briefstapel abgelegt sind und die Briefe von
dem Briefstapel seitlich weg einer Vereinzelungsvorrichtung zugeführt
werden.
Die Briefe sind dabei zwischen einem federnd gelagerten Andruckbügel
und mindestens einer Antriebswalze sowie einer leicht nach hinten
geneigten Führungsplatte angeordnet. Die Standfläche für die Briefe
und die Führungsplatte sind zueinander orthogonal. An arrangement for pre-separating printing media is also known, see DE 196 05 017 A1, in which letters are placed one behind the other as a stack of letters standing on one edge and the letters are fed laterally away from the stack of letters to a separating device.
The letters are arranged between a spring-loaded pressure bracket and at least one drive roller and a guide plate inclined slightly backwards. The base for the letters and the guide plate are orthogonal to each other.
Schließlich wurde noch eine Vorrichtung zum Vereinzeln von Druckträgern,
insbesondere von Briefen, entsprechend der nachveröffentlichten DE 198 36 235.8 und
Fig. 1 bis 4 gefunden.
Die Briefe A sind in der Vereinzelungsvorrichtung B gleichfalls mit einer
Kante auf einer unteren Führungsplatte 2 stehend hintereinander gestapelt
zwischen einem federnd gelagerten Andruckbügel 21 und Antriebswalzenkombinationen
3, 4 sowie einer leicht nach hinten geneigten
Führungsplatte 1 angeordnet.
Die Antriebswalzen ragen mit ihren zylinderförmigen Hüllflächen durch
Öffnungen in der Führungsplatte 1 und die Briefe A werden durch
erstere einzeln seitlich wegtransportiert.
Funktionell ist die Vereinzelungvorrichtung B in einen Vorvereinzelungsbereich
I mit zwei Antriebswalzenkombinationen 3, 4 im Start-Stop-Betrieb
und in einen Vereinzelungsbereich II mit Elementen 6, 7,
77 zur Vereinzelung bei kontinuierlichem Durchlauf aufgeteilt.
Im Vereinzelungsbereich II sind außerdem noch ein Sensor 10 zur
Druckträgererkennung und Auswurfmittel 9 in Form eines Auswurfwalzenpaares
91, 92 vorhanden.
Die Elemente 6, 7, 77 zur Vereinzelung bestehen aus einer Antriebsriemenkombination
6, einer dieser angepaßten angetriebenen Gegenrollenkombination
7 sowie einer gleichfalls angepaßten vorgelagerten
Gleithebelkombination 77.
Der Sensor 10b ist im Bereich der Gegenrollenkombination 7 angeordnet
und elektrisch mit einem Antrieb 5 für die beiden Antriebswalzenkombinationen
3, 4 in der Weise verknüpft, daß der Antrieb 5 jeweils
bei Druckträgerendeerkennung eingeschaltet wird.
Das Auswurfwalzenpaar 91, 92 besteht aus einer angetriebenen Auswurfwalze
91 und einer abgetriebenen Auswurfwalze 92. Die angetriebene
Auswurfwalze 91 ist auf einer drehbaren Achse 911 hinter der
Führungsplatte 1 befestigt und ragt teilweise durch eine angepaßte Öffnung
derselben. Die abgetriebene Auswurfwalze 92 ist auf einer gleichfalls
drehbaren Achse 921 vor der Führungsplatte 1 befestigt, siehe insbesondere
Fig. 2 und 3. Finally, a device for separating printing media, in particular letters, according to the subsequently published DE 198 36 235.8 and FIGS. 1 to 4 was found.
The letters A are also stacked one behind the other in the separating device B with an edge on a
The drive rollers with their cylindrical enveloping surfaces protrude through openings in the guide plate 1 and the letters A are individually transported away laterally by the former.
Functionally, the separating device B is divided into a pre-separating area I with two
In the separation area II there are also a sensor 10 for printing medium detection and ejection means 9 in the form of a pair of
The
The
Die Achse 921 ist auf einem drehbar federnd gelagerten Traghebel 93
drehbeweglich gelagert.
Für die Antriebsriemenkombination 6, die Gegenrollenkombination 7
nebst Gleithebelkombination 77 und das Auswurfwalzenpaar 91, 92 ist
ein gemeinsamer Antrieb 8 vorgesehen.The
A
Zweck der Erfindung ist eine Verbesserung der Gebrauchseigenschaften.The purpose of the invention is to improve the performance properties.
Der Erfindung liegt die Aufgabe zugrunde, den Briefdurchsatz in einer Vereinzelungseinrichtung der vorstehend beschriebenen Art an den Durchsatz der Nachfolgeeinrichtungen, insbesondere einer nachfolgenden Frankiermaschine anzupassen.The invention has for its object the letter throughput in a Separating device of the type described above to the Throughput of the successor devices, in particular a subsequent one Postage meter to adapt.
Erfindungsgemäß wird diese Aufgabe gemäß dem Hauptanspruch gelöst. Weitere vorteilhafte Merkmale der Erfindung sind den Unteransprüchen zu entnehmen.According to the invention, this object is achieved according to the main claim solved. Further advantageous features of the invention are the subclaims refer to.
Die Erfindung geht von der Überlegung aus, daß in der Frankiermaschine
ein Mindestabstand von Briefvorderkante zu Briefvorderkante einander
folgender Briefe bestehen muß, der dem längsten Frankierabdruck
plus Druckkopfbreite plus einem Sicherheitsmaß entspricht. Damit ist
zumindest erst einmal der Abstand bei kleinen kurzen Briefen vorgegeben.
Bei größeren beziehungsweise längeren Briefen ist der Abstand
von Vorderkante zu Vorderkante zwangsläufig größer als dieser Mindestabstand.
Es kommt in diesem Fall darauf an, den Abstand zwischen
dem langen Brief und dem folgenden Brief möglichst klein zu
halten beziehungsweise den größtmöglichen Durchsatz zu erzielen.
Durch die Erfindung wird dieses Problem über die Steuerung der
Transportgeschwindigkeit in den einzelnen Durchgangsbereichen der
Briefe in der Vereinzelungseinrichtung gelöst.
In Abhängigkeit von der Transportgeschwindigkeit der Nachfolgeeinrichtung
wird die Übergabegeschwindigkeit an diese angepaßt. Damit
wird von dieser Seite her einer Staubildung in der Nachfolgeeinrichtung
vorgebeugt.
Die Transportgeschwindigkeit wird im Vereinzelungsbereich größer eingestellt
als die Übergabegeschwindigkeit, bis ein Brief in den Auswurfbereich
gelangt ist. Das entspricht dem beschleunigten Transport im
Vereinzelungsbereich. Das dient der Durchsatzerhöhung im allgemeinen
und der Verkleinerung des Abstandes zwischen aufeinanderfolgenden
Briefen im besonderen.
Die Transportgeschwindigkeit wird im Vereinzelungsbereich kleiner bis
gleich wie die Übergabegeschwindigkeit eingestellt, solange sich ein
Brief im Auswurfbereich befindet. Das entspricht dem normalen Transport
im Vereinzelungsbereich. Damit wird eine Staubildung vor dem
Auswurfbereich vermieden.
Die Transportgeschwindigkeit wird im Vorvereinzelungsbereich größer
eingestellt als die Übergabegeschwindigkeit und größer als die erhöhte
Transportgeschwindigkeit im Vereinzelungsbereich, solange sich kein
Brief im Eingangsbereich des Vereinzelungsbereiches befindet. Das
entspricht dem beschleunigten Transport im Vorvereinzelungsbereich.
Das dient gleichfalls der Durchsatzerhöhung im allgemeinen und der
Verkleinerung des Abstandes zwischen aufeinanderfolgenden Briefen
im besonderen.
Die Transportgeschwindigkeit wird im Vorvereinzelungsbereich kleiner
bis gleich als die normale Transportgeschwindigkeit im Vereinzelungsbereich
eingestellt, wenn ein Brief den Eingangsbereich des Vereinzelungsbereiches
erreicht hat und kein weiterer Brief vor dem Auswurfbereich
vorhanden ist. Das entspricht dem normalen Transport im Vorvereinzelungsbereich.
Damit wird eine Staubildung im Eingangsbereich
des Vereinzelungsbereiches vermieden.
Die Transportgeschwindigkeit wird im Vorvereinzelungsbereich auf Null
eingestellt, solange ein Brief im Eingangsbereich und in den anderen
Bereichen des Vereinzelungsbereiches vorhanden ist. Das entspricht
dem Stop- oder Leerlaufbetrieb im Vorvereinzelungsbereich. Auf diese
Weise wird eine Staubildung oder ein Mehrfachabzug verhindert. The invention is based on the consideration that there must be a minimum distance from the leading edge of the letter to the leading edge of the letter in the franking machine, which corresponds to the longest franking impression plus print head width plus a security measure. This is at least the distance for small, short letters. For larger or longer letters, the distance from the leading edge to the leading edge is necessarily greater than this minimum distance. In this case it is important to keep the distance between the long letter and the following letter as small as possible or to achieve the greatest possible throughput.
The invention solves this problem by controlling the transport speed in the individual passage areas of the letters in the separating device.
Depending on the transport speed of the successor device, the transfer speed is adapted to this. This prevents congestion in the downstream device from this side.
The transport speed in the separation area is set higher than the transfer speed until a letter has reached the ejection area. This corresponds to the accelerated transport in the separation area. This serves to increase the throughput in general and in particular to reduce the distance between successive letters.
The transport speed in the separating area is set to less than or equal to the transfer speed as long as a letter is in the ejection area. This corresponds to normal transport in the separation area. This prevents the formation of jams in front of the discharge area.
The transport speed in the pre-separation area is set greater than the transfer speed and greater than the increased transport speed in the separation area, as long as there is no letter in the entrance area of the separation area. This corresponds to the accelerated transport in the pre-separation area.
This also serves to increase the throughput in general and to reduce the distance between successive letters in particular.
The transport speed in the pre-separation area is set to less than or equal to the normal transport speed in the separation area when a letter has reached the entrance area of the separation area and there is no further letter in front of the ejection area. This corresponds to normal transport in the pre-separation area. This prevents the formation of jams in the entrance area of the separation area.
The transport speed is set to zero in the pre-separation area as long as there is a letter in the entrance area and in the other areas of the separation area. This corresponds to the stop or idle operation in the pre-separation area. This prevents jamming or multiple deductions.
Die Übergabegeschwindigkeit an die Nachfolgeeinrichtung, das ist die
Transportgeschwindigkeit, die mit dem Auswurfwalzenpaar erzeugt
wird, wird laufend überwacht. Sie wird stets kleiner bis gleich als die in
der Nachfolgeeinrichtung eingestellte Transportgeschwindigkeit aber
etwas größer - ungefähr 10% - gehalten als die Transportgeschwindigkeit
im Anfangsbereich des Vereinzelungsbereiches, das ist die mit
den Elementen zur Vereinzelung erzeugte Transportgeschwindigkeit.
Des weiteren wird im Vorvereinzelungsbereich die Transportgeschwindigkeit,
die mit den Antriebswalzen bei beschleunigtem Transport
erzeugt wird, entsprechend größer - ungefähr 30% - eingestellt, als die
Übergabegeschwindigkeit im Vereinzelungsbereiches.
Der Brief wird im Eingangsbereich des Vereinzelungsbereiches und
unmittelbar nach der Vereinzelung abgetastet, um in Verknüpfung mit
weiteren Abtastergebnissen entsprechende Steuersignale für den Antrieb
im Vorvereinzelungsbereich und im Vereinzelungsbereich abzuleiten.
Der Brief wird im Auswurfbereich der Vereinzelungsvorrichtung abgetastet,
um daraus entsprechend Steuersignale für den Vorvereinzelungsbereich,
den Vereinzelungsbereich und die Nachfolgeeinrichtung
abzuleiten.The transfer speed to the successor device, that is the transport speed that is generated with the pair of ejection rollers, is continuously monitored. It is always kept lower than or equal to the transport speed set in the successor device, but somewhat higher - approximately 10% - than the transport speed in the initial area of the separation area, that is the transport speed generated with the elements for separation.
Furthermore, in the pre-separation area the transport speed, which is generated with the drive rollers during accelerated transport, is set correspondingly higher - approximately 30% - than the transfer speed in the separation area.
The letter is scanned in the entrance area of the singling area and immediately after the singling in order to derive corresponding control signals for the drive in the pre-singling area and in the singling area in connection with further scanning results.
The letter is scanned in the ejection area of the separating device in order to derive corresponding control signals for the pre-separating area, the separating area and the successor device.
Die Erfindung wird nachstehend am Ausführungsbeispiel näher erläutert.
Es zeigen:
- Fig. 1
- Eine Briefvereinzelungsvorrichtung gemäß der nachveröffentlichten DE 198 36 235.8 in perspektivischer Ansicht von vom von links,
- Fig. 2
- eine Ansicht nach Fig. 1 von schräg links,
- Fig. 3
- ein Ansicht nach Fig.1 von vom rechts, teilweise ausgeschnitten beziehungsweise ausgebrochen,
- Fig. 4
- eine teilweise Draufsicht nach Fig. 3,
- Fig. 5
- ein Blockschaltbild zur Steuerung der Antriebe in der Vereinzelungsvorrichtung.
Show it:
- Fig. 1
- A letter separating device according to the subsequently published DE 198 36 235.8 in a perspective view from the left,
- Fig. 2
- 1 from obliquely left,
- Fig. 3
- 1 from the right, partially cut out or broken out,
- Fig. 4
- 3 shows a partial top view according to FIG. 3,
- Fig. 5
- a block diagram for controlling the drives in the separating device.
Zur Vereinfachung und zum leichteren Verständnis ist die Darstellung schematisiert ausgeführt. Anstelle des Begriffes "Druckträger" wird im weiteren der Kürze wegen der Begriff "Brief" verwendet.The illustration is for simplification and easier understanding carried out schematically. Instead of the term "print carrier" is in further used for brevity because of the term "letter".
Gemäß Fig. 2 ist im Eingangsbereich der Antriebsriemenkombination 6
und der Gleithebelkombination 77 ein optischer Sensor 10a in einer
entsprechend angepaßten Öffnung der hinteren Führungsplatte 1 angeordnet.
Der Sensor 10a ist zweckmäßigerweise als Reflexsensor
ausgeführt. Mit diesem Sensor 10a wird festgestellt, ob der Brief A in
diesen Bereich eingedrungen ist beziehungsweise sich noch in diesem
Bereich befindet.2 is 6 in the input area of the drive belt combination
and the
Gemäß Fig. 3 ist unmittelbar nach der Antriebsriemenkombination 6 beziehungsweise
Gegenrollenkombination 7 ein optischer Sensor 10b in
einer entsprechend angepaßten Öffnung der hinteren Führungsplatte 1
angeordnet. Der Sensor 10b ist zweckmäßigerweise gleichfalls als
Reflexsensor ausgeführt. Mit diesem Sensor 10b wird festgestellt, ob
ein Brief A in diesem Bereich vorhanden ist.
Das Auswurfwalzenpaar 91, 92 ist in so einem Abstand nach der Gegenrollenkombination
7 angeordnet, daß durch erstere auch der kürzestmögliche
Brief A bereits erfaßt wird, bevor dieser letztere verlassen
hat.
Auf der drehbaren Achse 921 für die abgetriebene Auswurfwalze 92 ist
ein Sensor 13 zur Messung der Transportgeschwindigkeit des Briefes A
an dieser Stelle angeordnet. Der Sensor 13 ist als Encoder ausgeführt,
dessen Ausgangssignal mittels der Auswerteschaltung 15 mit einem
der Transportgeschwindigkeit in der Nachfolgeeinrichtung 16 entsprechenden
Signal verglichen und daraus ein Signal zur Steuerung des
gemeinsamen Antriebes 8 im Vereinzelungsbereich II sowie des Antriebes
5 im Vorvereinzelungsbereich I abgeleitet wird, siehe auch Fig.4
und 5.
Ein Brief A, der das Auswurfwalzenpaar 91, 92 passiert, wird durch die
angetriebene Auswurfwalze 91 durch Reibungsschluß linear bewegt
und überträgt seine Bewegung gleichfalls durch Reibungsschluß synchron
auf die federnd verstellbare abgetriebene Auswurfwalze 92 als
Drehbewegung. Die abgetriebenen Auswurfwalze 92 sitzt fest auf der
Achse 921. Demzufolge wird die Drehbewegung der Auswurfwalze 92
auf die Achse 921 und von dieser auf den Sensor 13 übertragen.
Schließlich ist noch ein Sensor 14 vorgesehen, der im Auswurfbereich
für die Briefe A unmittelbar vor oder nach der Berührungslinie zwischen
dem Auswurfwalzenpaar 91, 92 in der Führungsplatte 1 angeordnet ist.
Der Sensor 14 ist zweckmäßigerweise ebenfalls als Reflexsensor ausgeführt.
Mit Hilfe dieses Sensors 14 wird erkannt, ob ein Brief A den Auswurfbereich
erreicht beziehungsweise diesen verlassen hat und außerdem
die aktuelle Transportgeschwindigkeit in der Nachfolgeeinrichtung 16
über die Auswerteschaltung 15 abgefragt.3, an
The
A
A letter A, which passes the
Finally, a
With the help of this
Gemäß Fig. 5 sind die Sensoren 10a, 10b, 14 zur Briefabtastung mit
der Auswerteschaltung 15 verbunden, deren Kernstück ein Mikroprozessor
sowie eine Vergleichsschaltung ist. Die Auswerteschaltung 15
ist bidirektional mit der/n Nachfolgeeinrichtung/en 16, insbesondere
deren Steuerprozessor/en verbunden. Die Nachfolgeeinrichtung 16
kann eine dynamische Waage oder/und eine Frankiermaschine sein.
Weiterhin ist die Auswerteschaltung 15 zwecks Abgabe entsprechender
Steuersignale mit dem Antrieb 5 des Vorvereinzelungsbereiches I
sowie mit dem Antrieb 8 des Vereinzelungsbereiches II verbunden.
Die Ausgangssignale der Sensoren 10a, 10b, 14 werden in der
Auswerteschaltung 15 so verknüpft,
daß der Antrieb 5 im Vorvereinzelungsbereich I auf beschleunigten
Transport eingestellt wird, wenn der Sensor 10a keinen Brief A erkennt,
daß der Antrieb 5 im Vorvereinzelungsbereich I auf normalen Transport
eingestellt wird, wenn der Sensor 10a einen Brief A erkennt und der
Sensor 10b keinen Brief A erkennt,
daß der Antrieb 5 im Vorvereinzelungsbereich I auf Leerlauf eingestellt
wird, wenn der Sensor 10a und der Sensor 10b einen Brief A erkennt,
daß der Antrieb 8 im Vereinzelungsbereich II auf beschleunigten Transport
eingestellt wird, wenn der Sensor 14 keinen Brief A erkennt,
daß der Antrieb 8 im Vereinzelungsbereich II auf normalen Transport
eingestellt wird, wenn der Sensor 10b einen Brief A erkennt, siehe auch
Fig1 bis 4.
Auf diese einfache Weise wird eine zuverlässige Steuerung lediglich
über eine Briefabtastung und Messung der Briefgeschwindigkeit im
Auswurfbereich eine Durchlaufsteuerung in der Vereinzelungsvorrichtung
B realisiert. 5, the
The output signals of the
that the
that the
that the
that the
In this simple manner, a reliable control is implemented only by letter scanning and measurement of the letter speed in the ejection area, a flow control in the separating device B.
- AA
- Druckträger, BriefPrint carrier, letter
- BB
- Vereinzelungsvorrichtungseparating device
- 11
- hintere Führungsplatte in Vereinzelungsvorrichtung Brear guide plate in separating device B
- 22
- untere Führungsplatte in Vereinzelungsvorrichtung Blower guide plate in separating device B
- 2121
- AndruckbügelPress Arm
- 33
- erste Antriebswalzenkombinationfirst drive roller combination
- 44
- zweite Antriebswalzenkombinationsecond drive roller combination
- 55
-
separater gemeinsamer Antrieb für Antriebswalzenkombinationen
3 und 4separate common drive for
3 and 4drive roller combinations - 66
- AntriebsriemenkombinationDrive belt combination
- 77
- GegenrollenkombinationCounter-roller combination
- 7777
- GleithebelkombinationGleithebelkombination
- 88th
-
separater gemeinsamer Antrieb für Antriebsriemenkombination
6, Gegenrollenkombination 7, Gleithebelkombination
77 und Auswurfwalze 91separate common drive for
drive belt combination 6,counter roller combination 7,slide lever combination 77 andejection roller 91 - 99
- Auswurfmittelejection means
- 9191
- angetriebene Auswurfwalzedriven ejection roller
- 911911
-
Achse der Auswurfwalze 91
Ejection roller axis 91 - 9292
- abgetriebene Auswurfwalzedriven ejection roller
- 921921
-
Achse der Auswurfwalze 92
Ejection roller axis 92 - 9393
-
Traghebel für Auswurfwalze 92Support lever for
ejection roller 92 - 10a10a
- Sensor zur BrieferkennungLetter detection sensor
- 10b10b
- Sensor zur BrieferkennungLetter detection sensor
- 1313
- Sensor zur Messung der ÜbergabegeschwindigkeitSensor for measuring the transfer speed
- 1414
- Sensor zur BrieferkennungLetter detection sensor
- 1515
- Auswerteschaltungevaluation
- 1616
- Nachfolgeeinrichtungsuccessor to
- II
- Vorvereinzelungsbereichpre-singularization
- IIII
- Vereinzelungsbereichseparating region
Claims (13)
- A method for the control of the passage of print media (A), in particular of letters, in a singularization device (B) of a letter post processing system involving a pre-singularization area (I) followed by a singularization area (II) in which the print media (A) are transported laterally away from a stack and are delivered to a subsequent device (16),
characterized in that the print media (A) are transported faster in the respective area preceding the subsequent area than in the transition area from the one area to the other until a print medium (A) has reached that transition area, the delivery speed being adjusted to the transport speed of the respective subsequent device (16). - A method for passage control according to claim 1, characterized in that the singularization device (B) is functionally divided into a pre-singularization area (I) having a separate drive (5) with start-stop operation and a singularization area (II) having a separate drive (8) with continuous operation and in which the print media (A) are delivered to the subsequent device (16) by an ejection means (9),
that the transport speed in the singularization area (II) is set higher - corresponding to an accelerated transport - than the delivery speed until a print medium (A) has reached the ejection area,
that the transport speed in the singularization area (II) is set to a speed that is lower to equal to the delivery speed - corresponding to a normal transport - as long as a print medium (A) is in the ejection area,
that the transport speed in the pre-singularization area (I) is set higher - corresponding to an accelerated transport - than the delivery speed and higher than the transport speed in the singularization area (II) as long as there is no print medium (A) in the entry area of the singularization area (II),
that the transport speed in the pre-singularization area (I) is set to a speed that is lower to equal to the transport speed in the singularization area (II) - corresponding to a normal transport - when a print medium (A) has reached the entry area of the singularization area (II) and there is no other print medium (A) present before the ejection area,
that the transport speed in the pre-singularization area (I) is set to zero - corresponding to idle or stop operation - by means of an open-circuit setting as long as a print medium (A) is present in the entry area and in the other areas of the singularization area (II). - A method according to claims 1 to 2, characterized in that the delivery speed is constantly measured and compared and coordinated with the transport speed of the subsequent device (16) and that the result serves as a control signal for the drive (8) in the singularization area (II) as well as for the drive (5) in the pre-singularization area (I).
- A method according to claim 2, characterized in that the print medium (A) is scanned in the entry area of the singularization area (II) in order to deduce, in connection with further scanning results, respective control signals for the drive (5) in the pre-singularization area (I).
- A method according to claim 2, characterized in that the print medium (A) is scanned immediately after the singularization in order to deduce, in connection with further scanning results, respective control signals for the drives (5, 8) in the pre-singularization area (I) and in the singularization area (II), respectively.
- A method according to claim 2, characterized in that the print medium (A) is scanned in the ejection area of the singularization device (B) in order to deduce respective control signals for the pre-singularization area (I), the singularization area (II) and the subsequent device (16).
- A method according to claims 2 to 3, characterized in that the delivery speed is smaller than or equal to the transport speed in the subsequent device (16),
that the transport speed in the starting area of the singularization area (II) preferably is 10 % lower than the delivery speed as long as a print medium (A) is present in the ejection area, and
that, in case of accelerated transport, the transport speed in the pre-singularization area (I) is preferably set 30 % higher than the delivery speed. - An arrangement for carrying out the method according to claims 1 to 2 referring to a singularization device (B) of a letter post processing system divided into a pre-singularization area (I) and a singularization area (II), the latter being connected with a subsequent device (16), characterized in that, in the ejection area ofthe singularization device (B), there are provided a sensor (13) having the form of an encoder for measuring the speed of delivery to the subsequent device (16) and a sensor (14) for letter scanning,
that, in the entry area of the singularization area (II), there is provided a sensor (10a) for letter detection and
that, after the singularization in the singularization area (II), there is provided a sensor (10b) for letter detection,
that the sensors (10a, 10b, 13, 14) are connected to an evaluation circuit (15) that, for the purpose of sending control signals, is connected to the drive (5) of the pre-singularization area (I) and to the drive (8) of the singularization area (II) on the one hand and is bidirectionally connected to the subsequent device (16) on the other hand. - An arrangement according to claim 8, characterized in that, as an ejection means (9), there is provided a pair of ejection rollers (91, 92) comprising a fixed driving ejection roller (91) and a spring-mounted adjustable driven ejection roller (92),
that the driven ejection roller (92) is synchronously connected to sensor (13) the output signal of which is compared, in the evaluation circuit (15), with a value corresponding to the transport speed in the subsequent device (16), the result being sent as a control signal to the assigned drives (5, 8) in the pre-singularization area (I) and in the singularization area (II), respectively. - An arrangement according to claim 8, characterized in that sensor (14) is arranged either directly before or after the line of contact between the ejection rollers (91, 92).
- An arrangement according to claim 8, characterized in that the sensors (10a, 10b, 14) preferably have the form of reflex sensors.
- An arrangement according to claim 8, characterized in that the output signals of the sensors (10a, 10b, 14) for letter detection are linked with each other in the evaluation circuit (15) in such a manner
that the drive (5) in the pre-singularization area (I) is set to accelerated transport when sensor (10a) does not detect a print medium (A),
that the drive (5) in the pre-singularization area (I) is set to normal transport when sensor (10a) detects a print medium (A) and sensor (10b) does not detect a print medium (A),
that the drive (5) in the pre-singularization area is set to idle operation when sensor (10a) and sensor (10b) detect a print medium (A),
that the drive (8) in the singularization area (II) is set to accelerated transport when sensor (14) does not detect a print medium (A),
that the drive (8) in the singularization area (II) is set to normal transport when sensor (10b) detects a print medium (A). - An arrangement according to claims 8 and 12, characterized in that the output signal of sensor (14) moreover serves the communication with the subsequent device (16).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19913065 | 1999-03-17 | ||
DE19913065A DE19913065C2 (en) | 1999-03-17 | 1999-03-17 | Method and arrangement for flow control of print media |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1038812A2 EP1038812A2 (en) | 2000-09-27 |
EP1038812A3 EP1038812A3 (en) | 2001-08-16 |
EP1038812B1 true EP1038812B1 (en) | 2004-05-26 |
Family
ID=7902076
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00250056A Expired - Lifetime EP1038812B1 (en) | 1999-03-17 | 2000-02-21 | Method and device for controlling a stream of documents |
Country Status (3)
Country | Link |
---|---|
US (1) | US6378863B1 (en) |
EP (1) | EP1038812B1 (en) |
DE (2) | DE19913065C2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10046205C2 (en) * | 2000-09-13 | 2002-09-12 | Francotyp Postalia Ag | Process for controlling a fast dynamic balance |
DE20314910U1 (en) | 2003-09-26 | 2003-12-24 | Francotyp-Postalia Ag & Co. Kg | Arrangement for generating a print image for franking and postmark machines |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH650995A5 (en) | 1981-02-10 | 1985-08-30 | Frama Ag | FEEDING DEVICE FOR SINGLE FLAT MATERIAL PIECES. |
US4787311A (en) * | 1987-08-19 | 1988-11-29 | Pitney Bowes Inc. | Mailing machine envelope transport system |
US5154246A (en) * | 1991-03-08 | 1992-10-13 | Pitney Bowes Inc. | Sensor processor for high-speed mail-handling machine |
WO1992016444A1 (en) * | 1991-03-21 | 1992-10-01 | Bell & Howell Phillipsburg Company | Constant gap document feeder and method of operation thereof |
DE19605017C2 (en) * | 1996-01-31 | 1998-07-23 | Francotyp Postalia Gmbh | Arrangement for pre-separating print media |
FR2759069B1 (en) * | 1997-01-31 | 1999-04-23 | Neopost Ind | DEVICE FOR FEEDING MAIL ITEMS OF VARIABLE DIMENSIONS |
-
1999
- 1999-03-17 DE DE19913065A patent/DE19913065C2/en not_active Expired - Fee Related
-
2000
- 2000-02-21 DE DE50006548T patent/DE50006548D1/en not_active Expired - Lifetime
- 2000-02-21 EP EP00250056A patent/EP1038812B1/en not_active Expired - Lifetime
- 2000-03-17 US US09/528,421 patent/US6378863B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP1038812A2 (en) | 2000-09-27 |
EP1038812A3 (en) | 2001-08-16 |
DE19913065C2 (en) | 2001-02-22 |
US6378863B1 (en) | 2002-04-30 |
DE50006548D1 (en) | 2004-07-01 |
DE19913065A1 (en) | 2000-10-12 |
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