[go: up one dir, main page]

EP1697242B1 - Method and device for separating flat consignments - Google Patents

Method and device for separating flat consignments Download PDF

Info

Publication number
EP1697242B1
EP1697242B1 EP04797983A EP04797983A EP1697242B1 EP 1697242 B1 EP1697242 B1 EP 1697242B1 EP 04797983 A EP04797983 A EP 04797983A EP 04797983 A EP04797983 A EP 04797983A EP 1697242 B1 EP1697242 B1 EP 1697242B1
Authority
EP
European Patent Office
Prior art keywords
take
speed
elements
acceleration stage
acceleration
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
Application number
EP04797983A
Other languages
German (de)
French (fr)
Other versions
EP1697242A1 (en
Inventor
Oliver Kutzer
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.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of EP1697242A1 publication Critical patent/EP1697242A1/en
Application granted granted Critical
Publication of EP1697242B1 publication Critical patent/EP1697242B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00—Separating articles from piles
    • B65H3/02—Separating articles from piles using friction forces between articles and separator
    • B65H3/04—Endless-belt separators
    • B65H3/042—Endless-belt separators separating from the bottom of the pile
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H7/00—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles
    • B65H7/02—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors
    • 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
    • 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
    • B65H3/04—Endless-belt separators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00—Separating articles from piles
    • B65H3/02—Separating articles from piles using friction forces between articles and separator
    • B65H3/04—Endless-belt separators
    • B65H3/045—Endless-belt 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
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/50—Occurence
    • B65H2511/51—Presence
    • B65H2511/514—Particular portion of 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
    • 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
    • B65H2553/00—Sensing or detecting means
    • B65H2553/51—Encoders, e.g. linear
    • 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
    • B65H2701/13—Parts concerned of the handled material
    • B65H2701/131—Edges
    • B65H2701/1311—Edges leading 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
    • 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

Definitions

  • the invention relates to a method and a device for separating flat items by means of a plurality of successive, trigger means having acceleration stages, wherein the withdrawal means act in the withdrawal plane on one side of the mail sides.
  • the efficiency of a sorting system is largely determined by the throughput and the quality (double withdrawal rate and damage rate) of its separating device in the input area.
  • the throughput is limited by the detection of a singular transmission (detection of the trailing edge) and the acceleration of the next transmission. The higher the speed jump between the singular transmission and the subsequent transmissions, the longer the acceleration of the next transmission. The gap between the broadcasts becomes larger.
  • the acceleration stage has extraction means, which act on one side on the shipments.
  • a sensor acting as a tachogenerator driving role is formed and arranged on the side of the trigger, the speed of a voltage applied to the take-off is measured.
  • the trailing edge of this transmission are detected from the measured speed curve and the drives of the extraction means are controlled accordingly.
  • a similar procedure is from the DE 42 01 682 A1 in which a mail item is separated from a stack and transported to an image forming apparatus. The transport speed is measured and from this an optimum mailing time is determined.
  • a multi-stage separation in which the nominal take-off speed of the take-off means in a subsequent acceleration stage is higher than in an upstream acceleration stage (US Pat. DE 102 12 024 A1 ).
  • the invention has for its object to provide a method and a device for separating flat broadcasts are better retained with the overlapped broadcasts.
  • the object is achieved by the features of claims 1 and 6.
  • the nominal take-off speed of the take-off means in each acceleration stage is higher than the nominal take-off speed of the take-off means of the respective acceleration stage in the transport direction.
  • the speed of the transmission applied to the one or more extraction means is measured by means of a sensor T1 arranged on the side of the extraction means.
  • the speed of the transmissions is arranged by means of a sensor T2 which is disposed on the side facing away from the withdrawal means is measured, and as soon as the thus measured speed of the shipments deviates only a fixed small value from the rated speed of this subsequent acceleration stage after reducing the speed of the take-off means in the respective upstream acceleration stage, the speed of the take-off means of the respective preceding acceleration stage back to their Rated speed is increased.
  • the speed of the respective preceding acceleration stage is changed to the value 0.
  • the take-off means of the respectively preceding acceleration stage are accelerated to the nominal take-off speed.
  • the distance between the beginning of the respective acceleration stage and the associated sensor T2 and thus the breakpoint of the leading edge of the subsequent transmission is chosen as a function of the difference between the nominal speeds of the respective acceleration stage and the upstream acceleration stage so that both adjacent transmissions at the end of the respective acceleration stage have a fixed distance from each other.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Attitude Control For Articles On Conveyors (AREA)
  • Controlling Sheets Or Webs (AREA)
  • Container, Conveyance, Adherence, Positioning, Of Wafer (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Sorting Of Articles (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Control Of Conveyors (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)

Abstract

In several successive acceleration stages (1, 2), the nominal take-off speed of the take-off elements in each acceleration stage (2) is higher than the nominal take-off speed of the take-off elements of the respective preceding acceleration stage (1) in the direction of transport. In the respective acceleration stage (1, 2), the speed of the consignment (3) lying on the take-off element(s) is measured by means of a sensor T1 (5), which is positioned on the side of the take-off element. As soon as the speed of the consignment lying on the take-off element, which is measured in the feed region of each acceleration stage by means of the sensor positioned on the side of the take-off element, deviates by a defined negligible value from the nominal speed of the take-off element in said acceleration stage, i.e. as soon as the consignment is received in said acceleration stage practically without slippage, the speed of the take-off element of the preceding acceleration stage in the direction of transport is reduced. This permits overlapping consignments to be withheld.

Description

Die Erfindung betrifft ein Verfahren und eine Einrichtung zum Vereinzeln von flachen Sendungen mittels mehrerer aufeinander folgender, Abzugsmittel aufweisende Beschleunigungsstufen, wobei die Abzugsmittel in der Abzugsebene einseitig auf die Sendungsseiten einwirken.The invention relates to a method and a device for separating flat items by means of a plurality of successive, trigger means having acceleration stages, wherein the withdrawal means act in the withdrawal plane on one side of the mail sides.

Die Leistungsfähigkeit einer Sortieranlage wird maßgeblich vom Durchsatz und der Qualität (Doppelabzugsrate und Beschädigungsrate) seiner Vereinzelungseinrichtung im Eingabebereich bestimmt.
Der Durchsatz wird dabei limitiert durch die Erkennung einer vereinzelten Sendung (Detektion der Hinterkante) und der Beschleunigung der nächsten Sendung. Je höher der Geschwindigkeitssprung zwischen der vereinzelten Sendung und den nachfolgenden Sendungen ist, um so länger dauert die Beschleunigung der nächsten Sendung. Die Lücke zwischen den Sendungen wird damit größer.The efficiency of a sorting system is largely determined by the throughput and the quality (double withdrawal rate and damage rate) of its separating device in the input area.
The throughput is limited by the detection of a singular transmission (detection of the trailing edge) and the acceleration of the next transmission. The higher the speed jump between the singular transmission and the subsequent transmissions, the longer the acceleration of the next transmission. The gap between the broadcasts becomes larger.

Bisher wurde die Vereinzelung über Transportmittel, mechanische Rückhalteelemente und Erkennung der Sendungen im Vereinzelungsbereich durch Lichtschranken realisiert. Diese Sensoren können nur die Vorder- und Hinterkante von Sendungen erkennen und mit den Messsignalen die Steuerung der Vereinzelung beeinflussen, wenn die Sendungen schon vereinzelt sind ( DE 198 01 309 C1 , DE 34 24 397 A1 ).So far, the separation was realized by means of transport, mechanical restraint elements and detection of shipments in the separation area by light barriers. These sensors can only detect the leading and trailing edges of programs and influence the control of the separation with the measuring signals if the programs are already isolated ( DE 198 01 309 C1 . DE 34 24 397 A1 ).

Aus der US 5 429 347 A sind ein Verfahren und eine Einrichtung zum Vereinzeln von flachen Sendungen mittels einer einzigen Beschleunigungsstufe bekannt. Die Beschleunigungsstufe weist Abzugsmittel auf, die einseitig auf die Sendungen einwirken. Mittels eines Sensors, der als einen Tachogenerator antreibende Rolle ausgebildet und auf der Seite des Abzugsmittels angeordnet ist, wird die Geschwindigkeit einer an dem Abzugsmittel anliegenden Sendung gemessen. Durch eine Steuerung werden aus dem gemessenen Geschwindigkeitsverlauf die Hinterkante dieser Sendung detektiert und die Antriebe der Abzugsmittel entsprechend angesteuert.From the US 5 429 347 A For example, a method and apparatus for separating flat shipments by means of a single acceleration stage is known. The acceleration stage has extraction means, which act on one side on the shipments. By means of a sensor acting as a tachogenerator driving role is formed and arranged on the side of the trigger, the speed of a voltage applied to the take-off is measured. By a control, the trailing edge of this transmission are detected from the measured speed curve and the drives of the extraction means are controlled accordingly.

Ein ähnliches Verfahren ist aus der DE 42 01 682 A1 bekannt, bei dem eine Sendung aus einem Stapel vereinzelt und zu einer Bilderzeugungsvorrichtung transportiert wird. Die Transportgeschwindigkeit wird gemessen und daraus ein optimaler Sendungszufuhrzeitpunkt bestimmt.A similar procedure is from the DE 42 01 682 A1 in which a mail item is separated from a stack and transported to an image forming apparatus. The transport speed is measured and from this an optimum mailing time is determined.

Neben einer einstufigen Vereinzelung wurde auch eine mehrstufige Vereinzelung bekannt, in der die Nennabzugsgeschwindigkeit der Abzugsmittel in einer nachfolgenden Beschleunigungsstufe höher ist als in einer vorgelagerten Beschleunigungsstufe ( DE 102 12 024 A1 ).In addition to a single-stage separation, a multi-stage separation was also known, in which the nominal take-off speed of the take-off means in a subsequent acceleration stage is higher than in an upstream acceleration stage (US Pat. DE 102 12 024 A1 ).

Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren und eine Einrichtung zum Vereinzeln von flachen Sendungen zu schaffen, mit der überlappte Sendungen besser zurückgehalten werden.The invention has for its object to provide a method and a device for separating flat broadcasts are better retained with the overlapped broadcasts.

Erfindungsgemäß wird die Aufgabe durch die Merkmale der Ansprüche 1 und 6 gelöst.
Bei mehreren aufeinander folgenden Beschleunigungsstufen ist die Nennabzugsgeschwindigkeit der Abzugsmittel in jeder Beschleunigungsstufe höher als die Nennabzugsgeschwindigkeit der Abzugsmittel der jeweils in Transportrichtung vorgelagerten Beschleunigungsstufe.
Im Eingangsbereich der jeweiligen Beschleunigungsstufe, die einer in Transportrichtung vorgelagerten Beschleunigungsstufe nachfolgt, oder zwischen den Beschleunigungsstufen wird mittels eines auf der Seite des Abzugsmittels angeordneten Sensors T1 die Geschwindigkeit der an dem oder den Abzugsmitteln anliegenden Sendung gemessen.According to the invention the object is achieved by the features of claims 1 and 6.
In the case of several successive acceleration stages, the nominal take-off speed of the take-off means in each acceleration stage is higher than the nominal take-off speed of the take-off means of the respective acceleration stage in the transport direction.
In the input region of the respective acceleration stage, which follows an acceleration stage upstream of the transport direction, or between the acceleration stages, the speed of the transmission applied to the one or more extraction means is measured by means of a sensor T1 arranged on the side of the extraction means.

Sobald die im Eingangsbereich der jeweiligen Beschleunigungsstufe oder zwischen den Beschleunigungsstufen mittels des auf der Seite der Abzugsmittel angeordneten Sensors T1 gemessene Geschwindigkeit der an den Abzugsmitteln anliegenden Sendung von der Nenngeschwindigkeit der Abzugsmittel dieser Beschleunigungsstufe nur um einen festgelegten geringen Wert abweicht, d.h. die Sendung wurde von dieser Beschleunigungsstufe annähernd schlupffrei übernommen, wird die Geschwindigkeit der Abzugsmittel der dazu in Transportrichtung vorgelagerten Beschleunigungsstufe reduziert. Dadurch werden dann überlappte Sendungen zurückgehalten.As soon as the speed measured in the input section of the respective acceleration stage or between the acceleration stages by means of the sensor T1 located on the side of the take-off means deviates from the nominal speed of the take-off means of this acceleration stage only by a predetermined small value, i. the consignment was taken over by this acceleration stage almost without slippage, the speed of the take-off means is reduced to the upstream in the transport direction acceleration stage. As a result, overlapped programs are retained.

Vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen dargelegt.Advantageous embodiments of the invention are set forth in the subclaims.

Um auch die Geschwindigkeit von beim Abzugsvorgang zusätzlich mitgerissenen, überlappten Sendungen zu ermitteln, ist es vorteilhaft, zusätzlich mittels im Bereich der jeweils in Transportrichtung nachfolgenden Beschleunigungsstufen auf der von den Abzugsmittel weggewandten Seite angeordneter Sensoren T2 die Geschwindigkeit der von dieser Seite her abtastbaren Sendungen zu messen.In order to determine the speed of additionally entrained during the withdrawal process, overlapped broadcasts, it is advantageous to measure in addition by means of arranged in the transport direction following acceleration stages on the side facing away from the withdrawal means sensors T2, the speed of the scannable from this side transmissions ,

Um festzustellen, wann die Abzugsmittel aufgrund von Abnutzungserscheinungen erneuert werden müssen, ist es vorteilhaft, die Geschwindigkeiten der Abzugsmittel und der von ihnen angetriebenen Sendungen zur Schlupfermittlung miteinander zu vergleichen und bei über einem festgelegten Grenzwert liegenden Abweichungen ein Servicesignal zu erzeugen.In order to determine when the withdrawal means must be renewed due to signs of wear, it is advantageous to compare the speeds of the take-off means and the programs for determining slip driven by them, and to generate a service signal for deviations above a defined limit.

Vorteilhaft ist es, die Geschwindigkeit in den vorgelagerten Beschleunigungsstufen auf 0 zu reduzieren.It is advantageous to reduce the speed in the upstream acceleration stages to 0.

Besonders vorteilhaft ist es, wenn zusätzlich im Bereich jeder in Transportrichtung nachfolgenden Beschleunigungsstufe die Geschwindigkeit der Sendungen mittels eines Sensors T2, der auf der von den Abzugsmittel weggewandten Seite angeordnet ist, gemessen wird, und sobald die so gemessene Geschwindigkeit der Sendungen nach der Reduzierung der Geschwindigkeit der Abzugsmittel in der jeweils vorgelagerten Beschleunigungsstufe nur um einen festgelegten geringen Wert von der Nenngeschwindigkeit dieser nachfolgenden Beschleunigungsstufe abweicht, die Geschwindigkeit der Abzugsmittel der jeweils vorgelagerten Beschleunigungsstufe wieder auf ihre Nenngeschwindigkeit erhöht wird. Sobald eine mittels des Sensors T2 der nachfolgenden Beschleunigungsstufe detektierte Sendungsvorderkante als gemessener Geschwindigkeitssprung von der Nenngeschwindigkeit der nachfolgenden Beschleunigungsstufe auf die Nenngeschwindigkeit der vorgelagerten Beschleunigungsstufe registriert wird, wird die Geschwindigkeit der Abzugsmittel der jeweils vorgelagerten Beschleunigungsstufe auf den Wert 0 geändert. Sobald die vom Sensor T1 zwischen den beiden benachbarten Beschleunigungsstufen gemessene Sendungsgeschwindigkeit von der Geschwindigkeit annähernd der Nenngeschwindigkeit der nachfolgenden Beschleunigungsstufe auf den Wert 0 gefallen ist, werden die Abzugsmittel der jeweils vorgelagerten Beschleunigungsstufe auf die Nennabzugsgeschwindigkeit beschleunigt. Der Abstand zwischen dem Beginn der jeweiligen Beschleunigungsstufe und dem zugeordneten Sensor T2 und damit der Haltepunkt der Vorderkante der nachfolgenden Sendung wird in Abhängigkeit von der Differenz zwischen den Nenngeschwindigkeiten der jeweiligen Beschleunigungsstufe und der vorgelagerten Beschleunigungsstufe so gewählt, dass beide benachbarten Sendungen am Ende der jeweiligen Beschleunigungsstufe einen festgelegten Abstand zueinander aufweisen. Durch diesen Ablauf werden trotz starker Größenunterschiede der Sendungen kleine Lücken zwischen den vereinzelten Sendungen erreicht.It is particularly advantageous if, in addition, in the region of each acceleration stage following in the direction of transport, the speed of the transmissions is arranged by means of a sensor T2 which is disposed on the side facing away from the withdrawal means is measured, and as soon as the thus measured speed of the shipments deviates only a fixed small value from the rated speed of this subsequent acceleration stage after reducing the speed of the take-off means in the respective upstream acceleration stage, the speed of the take-off means of the respective preceding acceleration stage back to their Rated speed is increased. As soon as a forward shipment edge detected by means of the sensor T2 of the subsequent acceleration stage is registered as a measured speed jump from the nominal speed of the subsequent acceleration stage to the rated speed of the upstream acceleration stage, the speed of the respective preceding acceleration stage is changed to the value 0. As soon as the transmission speed measured by the sensor T1 between the two adjacent acceleration stages has fallen from the speed approximately the nominal speed of the subsequent acceleration stage to the value 0, the take-off means of the respectively preceding acceleration stage are accelerated to the nominal take-off speed. The distance between the beginning of the respective acceleration stage and the associated sensor T2 and thus the breakpoint of the leading edge of the subsequent transmission is chosen as a function of the difference between the nominal speeds of the respective acceleration stage and the upstream acceleration stage so that both adjacent transmissions at the end of the respective acceleration stage have a fixed distance from each other. Through this process, despite large differences in size of the shipments small gaps between the individual shipments can be achieved.

Anschließend wird die Erfindung in einem Ausführungsbeispiel anhand der Zeichnung erläutert.Subsequently, the invention will be explained in an embodiment with reference to the drawing.

Dabei zeigt

FIG 1
eine schematische Draufsicht auf zwei Beschleunigungsstufen einer Vereinzelungseinrichtung mit zwei Geschwindigkeitssensoren.
It shows
FIG. 1
a schematic plan view of two acceleration stages of a singulator with two speed sensors.

Beim Abzug von Sendungen 3,4 gemäß FIG 1 aus einem nicht dargestellten Sendungsstapel mittels einer ersten Beschleunigungsstufe 1 wurde nicht nur die an den Abzugsmitteln, z.B. umlaufene Abzugsriemen mit Unterdruckkammerunterstützung, anliegende vorderste Sendung 3 des Sendungsstapels abgezogen, sondern es wurden noch zwei weitere Sendungen 4 mitgerissen. Diese erste Stufe kann auch eine Stufe zur Vorvereinzelung sein, welche die Sendungen 3,4 überlappt verlassen. Mindestens die vorderste Sendung 3 wird mit einer Nenngeschwindigkeit vA1 zur folgenden Beschleunigungsstufe 2 transportiert. Sowie sie dort von den Abzugsmitteln erfasst wird, erfolgt der Weitertransport mit einer höheren Geschwindigkeit vA2. Zwischen den beiden Beschleunigungsstufen 1,2 ist ein die Geschwindigkeit der an den Abzugsmitteln anliegenden Sendungen messender Sensor T1 5 angeordnet. Die ist hier mittels einer auf der Sendungsoberfläche laufenden und einen Tachogenerator antreibenden Rolle realisiert. Das der Drehzahl entsprechende Ausgangssignal des Tachogenerators wird als Messsignal an eine Einrichtung zur Steuerung der Antriebe der Beschleunigungsstufen übertragen. Ist die Lücke zwischen den Beschleunigungsstufen 1,2 sehr klein oder nicht vorhanden, kann dieser Sensor T1 5 im Eingangsbereich der jeweils folgenden Beschleunigungsstufe 2 zwischen den Abzugsriemen angeordnet werden. Verlässt die jeweilige Sendung 3 die vorgelagerte Beschleunigungsstufe 1, so wird ihre Geschwindigkeit vom Sensor T1 5 überwacht. Wenn die Differenz zwischen der Geschwindigkeit des Abzugsmittels der nachfolgenden Beschleunigungsstufe 2 und der Geschwindigkeit der Sendung 3 kleiner als ein definierter kleiner Grenzwert ist, kann von einer annähernd schlupffreien Übernahme der Sendung 3 durch das Abzugsmittel der nachfolgenden Beschleunigungsstufe 2 ausgegangen werden. Ab diesem Zeitpunkt wird die Geschwindigkeit des Abzugsmittels der vorgelagerten Beschleunigungsstufe 1 reduziert (maximal auf den Wert 0), so dass das Abzugsmittel als Rückhalteelement wirkt und den Transport der nachfolgenden Sendungen verhindert oder mindestens erschwert. Im Bereich der in Transportrichtung nachfolgenden Beschleunigungsstufe 2 ist auf der von den Abzugsmitteln weggewandten Seite ein weiterer Sensor T2 6 angeordnet, der die Geschwindigkeit der von dieser Seite her abtastbaren Sendungen 3,4 misst. Während die Sendung 3 annähernd mit der Geschwindigkeit VA2 den Übergang zwischen den beiden Beschleunigungsstufen 1,2 verlässt, wird die vom Sensor T2 6 gemessene Geschwindigkeit VT2 überwacht. Ist die Geschwindigkeitsdifferenz zwischen VA2 und VT2 größer als ein definierter kleiner Grenzwert, so kann man davon ausgehen, dass sich die nachfolgende Sendung 4 mit der Vorderkante noch nicht am Sensor T2 6 befindet und das Abzugsmittel der vorgelagerten Beschleunigungsstufe 1 wird von der reduzierten Geschwindigkeit auf seine Nenngeschwindigkeit beschleunigt. Dadurch werden die nachfolgenden Sendungen mit Nenngeschwindigkeit zum Sensor T2 6 vortransportiert. Erkennt der Sensor T2 6 die Vorderkante der nachfolgenden Sendung 4, indem er einen Geschwindigkeitssprung auf die Nenngeschwindigkeit VA1 des Abzugsmittels der vorgelagerten Beschleunigungsstufe 1 registriert, wird das Abzugsmittel der vorgelagerten Beschleunigungsstufe 1 gestoppt und wirkt wieder als Rückhalteelement.
Liegt die Vorderkante der nachfolgenden Sendung 4 sehr weit zurück, wird eine der folgende Bedingungen erfüllt:

  • Es bildet sich eine Lücke im Übergang zwischen den Abzugsmitteln.
  • Die erste Sendung 3 verlässt mit der Hinterkante den Sensor T1 5.
When deducting shipments 3,4 in accordance with FIG. 1 from a stack of mail, not shown by means of a first acceleration stage 1 not only the triggering means, eg circulating trigger belt with vacuum chamber support, applied foremost program 3 of the mail stack was deducted, but there were two more programs 4 entrained. This first stage may also be a pre-separation stage be left, which overlaps the programs 3.4. At least the foremost consignment 3 is transported at a nominal speed vA1 to the following acceleration stage 2. As it is detected there by the withdrawal means, the further transport takes place at a higher speed vA2. Between the two acceleration stages 1, 2 a sensor T1 5 is arranged which measures the speed of the transmissions which are applied to the take-off means. This is realized here by means of a running on the broadcast surface and a tachogenerator driving role. The output signal of the tachogenerator, which corresponds to the rotational speed, is transmitted as a measuring signal to a device for controlling the drives of the acceleration stages. If the gap between the acceleration stages 1, 2 is very small or absent, this sensor T1 5 can be arranged between the trigger belts in the input area of the respectively following acceleration stage 2. If the respective program 3 leaves the upstream acceleration stage 1, its speed is monitored by the sensor T1 5. If the difference between the speed of the withdrawal means of the subsequent acceleration stage 2 and the speed of the shipment 3 is less than a defined small limit value, it can be assumed that the shipment 3 will be taken over by the removal means of the subsequent acceleration stage 2 with virtually no slip. From this point on, the speed of the withdrawal means of the upstream acceleration stage 1 is reduced (maximum to the value 0), so that the withdrawal means acts as a retaining element and prevents or at least impedes the transport of the subsequent shipments. In the area of the acceleration stage 2 following in the transport direction, a further sensor T2 6 is arranged on the side facing away from the withdrawal means, which sensor measures the speed of the transmissions 3,4 which can be scanned from this side. While the consignment 3 leaves the transition between the two acceleration stages 1, 2 almost at the speed V A2, the speed V T2 measured by the sensor T2 6 is monitored. Is the speed difference between V A2 and V T2 greater as a defined small limit, it can be assumed that the following shipment 4 with the leading edge is not yet on the sensor T2 6 and the take-off means of the upstream acceleration stage 1 is accelerated from the reduced speed to its rated speed. As a result, the subsequent programs are transported forward at nominal speed to the sensor T2 6. If the sensor T2 6 detects the front edge of the following program 4 by registering a speed jump to the rated speed V A1 of the triggering means of the upstream acceleration stage 1, the triggering means of the upstream acceleration stage 1 is stopped and acts again as a retaining element.
If the leading edge of the following program 4 is very far back, one of the following conditions is met:
  • There is a gap in the transition between the withdrawal means.
  • The first shipment 3 leaves the sensor T1 5 with the trailing edge.

Claims (10)

  1. Method for separating flat consignments by means of a plurality of successive acceleration stages (1, 2) having take-off elements, whereby the take-off elements act on one side on the sides of the consignment in the take-off plane, whereby the nominal take-off speed of the take-off elements in each acceleration stage (2) is higher than the nominal take-off speed of the take-off elements of the acceleration stage (1) upstream in the direction of transport at any one time,
    characterised in that the speed of the consignment (3) lying on the take-off elements is measured in the feed region of the respective acceleration stage (2) which follows an upstream acceleration stage (1) in the direction of transport, or between the acceleration stages (1, 2), by means of a sensor T1 (5) located on the side of the take-off element, and as soon as the speed of the consignment (3) lying on the take-off elements, which is measured in the feed region of the respective acceleration stage (2) or between the acceleration stages (1, 2) by means of the sensor T1 (5) located on the side of the take-off elements, deviates by only a defined low value from the nominal speed of the take-off elements in the subsequent acceleration stage (2), the speed of the take-off elements of the upstream acceleration stage (1) in the direction of transport is reduced.
  2. Method according to claim 1, whereby the speed of the consignments (3, 4) which can be sensed from the side facing away from the take-off elements is additionally measured by means of sensors T2 (6) located on the side facing away from the take-off elements in the region of the subsequent acceleration stages (2) in the direction of transport.
  3. Method according to claim 1, whereby the speeds of the take-off elements and of the consignments (3) driven by them are compared with one another in order to determine slippage and, when deviations lying above a defined limit value are exceeded, a service signal is generated.
  4. Method according to claim 2, whereby
    - as soon as the speed of the consignments (3) lying on the take-off elements, which is measured between the acceleration stages (1, 2) by means of the sensors T1 (5) located on the side of the take-off elements, deviates by only a defined low value from the nominal speed of the take-off elements of the subsequent acceleration stage (2) in the direction of transport at any one time, the speed of the take-off elements of the upstream acceleration stage (1) in the direction of transport is reduced,
    - the speed of the consignments (3, 4) is measured in the region of each subsequent acceleration stage (2) in the direction of transport by means of a sensor T2 (6), which is located on the side facing away from the take-off elements, and as soon as the thus measured speed of the consignments deviates by only a defined low value from the nominal speed of this subsequent acceleration stage (2) after the reduction of the speed of the take-off elements in the respective upstream acceleration stage (1), the speed of the take-off elements of the respective upstream acceleration stage (1) is again increased to its nominal speed, and as soon as the leading edge of a consignment detected by means of the sensor T2 (6) of the subsequent acceleration stage (2) is registered as a measured jump in speed to the nominal speed of the upstream acceleration stage (1), the speed of the take-off elements of the respective upstream acceleration stage (1) is changed to the value 0,
    - as soon as the consignment speed measured by the sensor T1 (5) between the two adjacent acceleration stages (1, 2) has dropped from the speed approximating the nominal speed of the subsequent acceleration stage (2) to the value 0, the take-off elements of the respective upstream acceleration stage (1) are accelerated to the nominal take-off speed and
    - the distance between the beginning of the respective acceleration stage (2) and the associated sensor T2 (6) and thus the holding point for the leading edge of the subsequent consignment (4) is chosen depending on the difference between the nominal speeds of the respective acceleration stage (2) and the upstream acceleration stage (1) such that the two adjacent consignments (3, 4) exhibit a defined distance from one another at the end of the respective acceleration stage (2).
  5. Method according to claim 1 or 4, whereby as soon as the speed of the consignments (3) lying on the take-off elements, which is measured between the acceleration stages (1, 2) by means of the sensors T1 (5) located on the side of the take-off elements, deviates by only a defined low value from the nominal speed of the take-off elements of the subsequent acceleration stage (2) in the direction of transport at any one time, the speed of the take-off elements of the upstream acceleration stage (1) in the direction of transport is reduced to the value 0.
  6. Device for separating flat consignments by means of a plurality of successive acceleration stages (1, 2) having take-off elements, whereby the take-off elements act on one side on the sides of the consignment in the take-off plane, whereby the nominal take-off speed of the take-off elements in each acceleration stage (2) is higher than the nominal take-off speed of the take-off elements of the acceleration stage (1) upstream in the direction of transport at any one time,
    characterised in that a sensor T1 (5) for measuring the speed of the consignment (3) lying on the take-off elements is measured in the feed region of the respective acceleration stage (2) which follows an upstream acceleration stage (1) in the direction of transport, or between the acceleration stages (1, 2), and a control unit is provided which is implemented such that as soon as the speed of the consignment (3) lying on the take-off elements, which is measured in the feed region of the respective acceleration stage (2) or between the acceleration stages (1, 2) by means of the sensor T1 (5) located on the side of the take-off elements, deviates by only a defined low value from the nominal speed of the take-off elements in the subsequent acceleration stage (2), the speed of the take-off elements of the upstream acceleration stage (1) in the direction of transport is reduced.
  7. Device according to claim 6, whereby sensors T2 (6) are additionally located in the region of the subsequent acceleration stages (2) in the direction of transport on the side facing away from the take-off elements which measure the speed of the consignments (3, 4) that can be sensed from this side.
  8. Device according to claim 6, whereby the sensors T1,2 (5, 6) for measuring the consignment speed are implemented as rollers or bands, running on the consignment surfaces, in fixed locations and driving tachogenerators, whereby the rotational speeds or the voltage generated by the tachogenerators serves as a measure of the consignment speed.
  9. Device according to claim 6, whereby controlled powered take-off belts with defined coefficients of friction are provided as take-off elements.
  10. Device according to claim 9, whereby the take-off elements have controllable vacuum chambers in order to draw the consignments onto the take-off belts.
EP04797983A 2003-11-27 2004-11-18 Method and device for separating flat consignments Expired - Lifetime EP1697242B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10355292A DE10355292B4 (en) 2003-11-27 2003-11-27 Method and device for separating flat items
PCT/EP2004/013090 WO2005061354A1 (en) 2003-11-27 2004-11-18 Method and device for separating flat consignments

Publications (2)

Publication Number Publication Date
EP1697242A1 EP1697242A1 (en) 2006-09-06
EP1697242B1 true EP1697242B1 (en) 2009-07-01

Family

ID=34683268

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04797983A Expired - Lifetime EP1697242B1 (en) 2003-11-27 2004-11-18 Method and device for separating flat consignments

Country Status (7)

Country Link
US (1) US20070267802A1 (en)
EP (1) EP1697242B1 (en)
JP (1) JP2007512199A (en)
KR (1) KR20060107563A (en)
CN (1) CN100542916C (en)
DE (2) DE10355292B4 (en)
WO (1) WO2005061354A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4395085B2 (en) * 2005-02-07 2010-01-06 株式会社Ｐｆｕ Sheet feeding device
ITUB20159288A1 (en) * 2015-12-23 2017-06-23 Pirelli Process and apparatus for applying noise reducing elements to tires for vehicle wheels
CN107310951B (en) * 2016-04-26 2020-04-10 广州市粤隆自动化机械设备有限公司 Novel intelligent paging machine and paging method

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3847383A (en) * 1973-11-30 1974-11-12 Burroughs Corp Document feeding device
US3988017A (en) * 1975-03-20 1976-10-26 Lockheed Electronics Co., Inc. Workpiece feeding device
US4030723A (en) * 1975-12-15 1977-06-21 Pitney-Bowes, Inc. Vacuum-controlled, sheet-material separator and feeder system
DE3424397A1 (en) * 1984-07-03 1986-01-09 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt SINGLE DEVICE FOR FLAT OBJECTS
JPH0281845A (en) * 1988-06-14 1990-03-22 Minolta Camera Co Ltd Paper feeding apparatus
ES2085873T3 (en) * 1989-05-08 1996-06-16 Canon Kk PRINTING DEVICE.
JPH04239671A (en) * 1991-01-24 1992-08-27 Konica Corp Paper feeder for image forming apparatus
US5313253A (en) * 1992-08-17 1994-05-17 Xerox Corporation Paper path signature analysis apparatus
FR2697516B1 (en) * 1992-11-05 1995-02-03 Bertin & Cie Unit dispensing device for stacked thin objects.
FR2707188B1 (en) * 1993-05-06 1997-02-21 Licentia Patent Verwaltungs Gmbh DEVICE FOR REVERSE DIRECTION OF FLAT ARTICLES
JPH09278231A (en) * 1996-04-11 1997-10-28 Moritetsuku:Kk Envelope carrying device
DE19801309C1 (en) * 1998-01-15 1999-08-12 Siemens Ag Method for controlling a take-off device for flat consignments from a stack
NL1015266C2 (en) * 2000-05-23 2001-12-14 Koninkl Kpn Nv Apparatus and method for detecting overlapping objects.
US6572096B1 (en) * 2001-11-30 2003-06-03 Hewlett-Packard Development Company, L.P Image forming device having a closed-loop feedback system
DE10212024A1 (en) * 2002-03-19 2003-10-16 Interroll Holding Ag S Antonin Device to separate flat objects e.g. letters or flat parcels, consists of continuous handling belt with carrier surface and separator belt with separator surface moving in opposite directions, to generate speed differential between letters
US6792332B1 (en) * 2003-06-27 2004-09-14 Pitney Bowes Inc. Method for dynamic acceleration in an article transporting system

Also Published As

Publication number Publication date
KR20060107563A (en) 2006-10-13
CN100542916C (en) 2009-09-23
EP1697242A1 (en) 2006-09-06
JP2007512199A (en) 2007-05-17
DE502004009698D1 (en) 2009-08-13
US20070267802A1 (en) 2007-11-22
WO2005061354A1 (en) 2005-07-07
DE10355292A1 (en) 2005-07-21
CN1886317A (en) 2006-12-27
DE10355292B4 (en) 2005-11-03

Similar Documents

Publication Publication Date Title
EP1678065B1 (en) Device for singulating vertically positioned flat mailings from a stack of mail
EP0928764B1 (en) Device for turning flat mail objects
EP2316580B1 (en) Device and method for processing objects of different dimensions
WO1997031726A1 (en) Method of controlling a device for removing flat items of post from a stack
DE102006001701A1 (en) Sheet feeder and stowage detection method
EP1678064B1 (en) Device for singulating overlapping flat mailings
EP1771368B1 (en) Separating distance for overlapping flat parcels in a vertical position
DE60009726T2 (en) DEVICE FOR PROMOTING FLAT OBJECTS BY MEANS OF A SYNCHRONIZATION SYSTEM
EP1421022B1 (en) Method and device for identifying double feeds
DE69515772T2 (en) METHOD AND DEVICE FOR OVERLAPPING DOCUMENTS
EP1419018A1 (en) Device for separating postal items according to thickness classes
EP1697242B1 (en) Method and device for separating flat consignments
EP1414724B1 (en) Device for the delivery of flat objects
EP0891287B1 (en) Device for orienting flat despatches
DE60007690T2 (en) Method and device for improving synchronization in an inserting system
EP0698573A1 (en) Apparatus and process for feeding sheet-like goods
EP0185959B1 (en) Separating device
EP1507728B1 (en) Method and device for stacking flat mailings
WO2003028908A1 (en) Device for the separation of flat mailings into thickness classes
DE10140497C1 (en) Separation device for mail sorting installation with operation of driven extraction device in reverse direction for returning letter upon failed separation
EP1699719B1 (en) Method and assembly for identifying overlapped flat mail items
DE19743020C2 (en) Device and method for separating printed products
DE60125231T2 (en) APPARATUS AND METHOD FOR DETERMINING OVERLAPPING OBJECTS
DE10127993A1 (en) Separating unit for flat components, e.g. letters, consists of a transport supply belt, rollers, retention members, a separating member and a lock unit
EP2260950B1 (en) Method and device for regulated transport of objects

Legal Events

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

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20060518

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): BE DE FR GB IT

DAX Request for extension of the european patent (deleted)
RBV Designated contracting states (corrected)

Designated state(s): BE DE FR GB IT

17Q First examination report despatched

Effective date: 20080707

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE DE FR GB IT

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REF Corresponds to:

Ref document number: 502004009698

Country of ref document: DE

Date of ref document: 20090813

Kind code of ref document: P

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20100406

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

Ref country code: GB

Payment date: 20101111

Year of fee payment: 7

Ref country code: IT

Payment date: 20101125

Year of fee payment: 7

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

Ref country code: FR

Payment date: 20111201

Year of fee payment: 8

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

Ref country code: BE

Payment date: 20111229

Year of fee payment: 8

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

Ref country code: DE

Payment date: 20120120

Year of fee payment: 8

BERE Be: lapsed

Owner name: SIEMENS A.G.

Effective date: 20121130

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

Effective date: 20121118

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20130731

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

Ref country code: IT

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

Effective date: 20121118

Ref country code: BE

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

Effective date: 20121130

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502004009698

Country of ref document: DE

Effective date: 20130601

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

Ref country code: DE

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

Effective date: 20130601

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

Ref country code: FR

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

Effective date: 20121130

Ref country code: GB

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

Effective date: 20121118