EP0167091B1 - Dispositif séparateur pour articles plats - Google Patents

Dispositif séparateur pour articles plats Download PDF

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Publication number
EP0167091B1
EP0167091B1 EP85107855A EP85107855A EP0167091B1 EP 0167091 B1 EP0167091 B1 EP 0167091B1 EP 85107855 A EP85107855 A EP 85107855A EP 85107855 A EP85107855 A EP 85107855A EP 0167091 B1 EP0167091 B1 EP 0167091B1
Authority
EP
European Patent Office
Prior art keywords
spacing
take
article
taken
corrected
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP85107855A
Other languages
German (de)
English (en)
Other versions
EP0167091A1 (fr
Inventor
Hanno Dr.-Ing. Gillmann
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Publication of EP0167091A1 publication Critical patent/EP0167091A1/fr
Application granted granted Critical
Publication of EP0167091B1 publication Critical patent/EP0167091B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C1/00—Measures preceding sorting according to destination
    • B07C1/02—Forming articles into a stream; Arranging articles in a stream, e.g. spacing, orientating
    • 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
    • B65H7/14—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 by photoelectric 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
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/20—Location in space
    • B65H2511/22—Distance
    • 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
    • B65H2553/40—Sensing or detecting means using optical, e.g. photographic, elements
    • B65H2553/41—Photoelectric detectors
    • B65H2553/416—Array arrangement, i.e. row of emitters 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
    • 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 separating device according to the preamble of patent claim 1.
  • a first sensing device is arranged between the stack exit and the conveyor rollers, which feeds the mail items each into the detection range of a pair of continuously driven conveyor rollers. This is followed by a second sensing device at a predetermined distance.
  • a control circuit controls the drive of the fume cupboard as a function of the signals from the sensing devices.
  • Both sensing devices form measuring sections running along the conveying path, the output signals of which are a measure of the partial section of the relevant measuring section which is covered by the leading edge of the mail item to be delivered or by the reference edge of the previously delivered mail item.
  • the control circuit is designed in such a way that the drive of the take-off device starts as soon as the section of the second measuring section covered by the reference edge of the previously delivered item has become the same size as the section by which the item to be delivered protrudes into the first measuring section.
  • the sensing devices preferably consist of light barriers.
  • the known separating device triggers a deduction if it is determined with the aid of the sensing devices (light barriers) that a predetermined minimum distance has been reached between the rear edge of the leading mail item and the front edge of the subsequent mail item.
  • This predetermined minimum distance must be specified in practice so that the separating device downstream devices, for. B. a letter sorting device can process as many items as possible per time unit. Trouble-free processing requires compliance with minimum gaps between consecutive consignments.
  • the invention is based on the object, in a generic device, to approximate the mean value of the trigger gaps actually achieved as closely as possible to the minimum gap in order to largely achieve a maximum deduction performance.
  • the gap enlargement caused by the respective acceleration process should therefore be avoided.
  • the trigger control triggers a deduction if a gap is determined which corresponds to the desired target minimum gap minus a specification for the acceleration path.
  • the deviation of the gap achieved from the target gap after deduction has been established and the specification for the acceleration path for the subsequent trigger starts is corrected.
  • changes in the acceleration behavior caused by the drive system of the take-off device and / or the separating properties of the items to be separated are automatically corrected; the system adjusts itself.
  • the length of the preceding program can be measured and the gap to the subsequent program can be controlled as a function thereof. This is interesting if higher transport speeds are used in subsequent facilities of the system (e.g. in sorting facilities) and an almost constant gap is to be achieved there regardless of the length of the shipment.
  • the trigger control is expediently carried out using a microprocessor which continuously queries the state of the light barriers and uses this in its program to calculate the desired trigger times and to trigger the trigger.
  • the same device can also be used when control at constant leading edge spacing is desired.
  • FIG. 1 is fixedly mounted, but a shaft 20, on which a roller 21 is attached, is freely rotatable.
  • the shaft 20 also serves for the pivotable mounting of a rocker arm 22, which carries the axis 23 of a further roller (pull-off roller) 24.
  • a take-off belt 25 is guided as a separating member, the outer surface of which has a high coefficient of friction.
  • the rocker arm 22 is supported by a schematically indicated spring 26, so that its respective position depends on the pressing force of the stack of mail items, of which the foremost mail item 1 'is shown when it is pulled off.
  • the free end of the rocker 22 acts on a microswitch, not shown. If the pressure force of the stack is too low, the microswitch closes a normally closed contact, whereby a gear motor (not shown) is switched on. At the end of the stack, this drives a supporting wall in the direction of the take-off roller 24 until after said position of the rocker corresponding to the intended pressing force the said break contact switches off again.
  • the shaft 20 is controlled by a motor (not shown) that runs continuously during operation by means of a clutch and brake, that is to say intermittently, in the direction of the arrow - dashed in the illustration of the roller 20.
  • Clutch and brake are arranged so that the shaft 20 in the presence of a control signal based on FIG. 2 control circuit 60, explained in more detail, is connected to the drive and, in the absence of the control signal, is braked while disconnecting this connection.
  • a drive amplifier for this drive is designated by 30.
  • edges (leading edges) of the mail items in the stack pointing in the conveying direction lie more or less close to a stop wall 40, which leaves a gap (stack exit) allowing the mail items to pass through to the take-off belt 25.
  • conveyor rollers 43 and 44 Arranged in the conveying path of the mail items is a pair of continuously driven conveyor rollers 43 and 44, by means of which the mail items are forcibly conveyed as soon as they have reached their detection area.
  • These conveyor rollers also serve here as deflection rollers of conveyor belts 48 and 49 which are guided in the conveying direction around further deflection rollers 50 and 51. While the driven conveyor roller 43 is fixed, the conveyor roller 44 is flexible in a known manner, for. B. on a pivotable lever, but this is not shown in the drawing for the sake of simplicity.
  • a measuring path 71/71 ' is then arranged along the conveying path of the mail items at the stack exit (stop wall 40).
  • This measuring section is designed in such a way that its output signals are a measure of the partial section of the measuring section concerned that is swept from the front edge of the mail item 1 'to be delivered or from the reference edge (rear edge) of the previously delivered mail item 1 ".
  • the measuring section 71/71 ' is formed by seven successive light barriers, the light receivers of which are designated by the reference numeral 71 and their associated light sources by 71'. Photodiodes or phototransistors are used as light receivers.
  • a light barrier 73/73 '(with light sources 73') monitoring the detection area of the conveyor rollers 43 and 44 is provided.
  • This light barrier 73/73 ' is the last light barrier in the row of light barriers, it triggers the stop of the take-off belt 25 when the front edge of the mail item delivered has reached the conveyor belts 48, 49.
  • FIG. 2 schematically shows details from FIG. 1.
  • Essential for the control circuit 60 is a microprocessor, which evaluates the light barrier signals and determines the respective positions of the programs 1 ′ and 1 ′′ from the light / dark signals.

Landscapes

  • Controlling Sheets Or Webs (AREA)
  • Sorting Of Articles (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Control Of Conveyors (AREA)

Claims (4)

1. Dispositif dépileur destiné à acheminer des objets plats (1', 1"), en particulier des plis, prélevés sur une pile à un transporteur, comprenant un circuit de commande (60) destiné à commander l'extraction en fonction de la distance séparant l'objet à extraire (1') du bord avant ou du bord arrière de l'objet (1") qui a déjà été extrait et à calculer cette distance au moyen d'une zone de mesure (71/71'), disposée en aval de la sortie de la pile, qui s'étend le long du trajet de transport, dont les signaux de sortie sont envoyés au circuit de commande (60), la zone de mesure (71, 71') étant composé d'une série de détecteurs photo- électriques et, éventuellement, d'un générateur d'impulsions dont la cadence est fonction du mouvement du transporteur, caractérisé en ce que le circuit de commande (60) possède des moyens par lesquels le résultat de la mesure de la distance est corrigé d'une valeur spécifiée, qui est fonction du trajet d'accélération de l'objet (1') à extraire, et par lequel l'extraction est déclenchée lorsque la grandeur du résultat de mesure de distance ainsi corrigée correspond à une valeur de consigne de la distance.
2. Dispositif dépileur selon la revendication 1, caractérisé en ce que la distance atteinte lors de l'extraction est comparée à la distance désirée, en ce que, dans le cas d'un écart, la valeur spécifiée est corrigée d'une valeur calculée à partir de l'écart et en ce que cette valeur spécifiée ainsi corrigée est utilisée pour le calcul de l'instant d'extraction pour l'objet (1') suivant.
3. Dispositif dépileur selon la revendication 2, caractérisé en ce que, pour la mesure de la distance destinée à la correction de la valeur spécifiée, on analyse uniquement les opérations d'extraction dans lesquelles l'objet à extraire (1') occulte au moins l'un des détecteurs photo-électriques (71/71') à l'instant de l'extraction ou avant cette extraction.
4. Dispositif dépileur selon une des revendications 1 à 3, caractérisé en ce que la valeur de consigne de la distance est modifiée en fonction de la longueur de l'objet (1") qui vient d'être extrait et qu'elle est de préférence réduite avec l'accroissement de la longueur de la valeur de consigne de la distance.
EP85107855A 1984-07-03 1985-06-25 Dispositif séparateur pour articles plats Expired EP0167091B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3424397 1984-07-03
DE19843424397 DE3424397A1 (de) 1984-07-03 1984-07-03 Vereinzelungseinrichtung fuer flache gegenstaende

Publications (2)

Publication Number Publication Date
EP0167091A1 EP0167091A1 (fr) 1986-01-08
EP0167091B1 true EP0167091B1 (fr) 1989-03-15

Family

ID=6239694

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85107855A Expired EP0167091B1 (fr) 1984-07-03 1985-06-25 Dispositif séparateur pour articles plats

Country Status (3)

Country Link
US (1) US4691912A (fr)
EP (1) EP0167091B1 (fr)
DE (2) DE3424397A1 (fr)

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DE3544093A1 (de) * 1985-12-13 1987-06-19 Licentia Gmbh Verfahren zum steuern des abzugsvorganges bei einer vereinzelungseinrichtung und anordnung zur durchfuehrung des verfahrens
US4893804A (en) * 1987-07-01 1990-01-16 Nec Corporation Apparatus for feeding sheet articles
US4934684A (en) * 1988-04-05 1990-06-19 National Computer Systems, Inc. Sheet picking mechanism
US4909499A (en) * 1988-12-28 1990-03-20 Pitney Bowes Inc. Mail singulating apparatus
US4924106A (en) * 1988-12-28 1990-05-08 Pitney Bowes Inc. Envelope flap profiling apparatus
US4886976A (en) * 1988-12-28 1989-12-12 Pitney Bowes Inc. Driver circuitry for multiple sensors
US4953842A (en) * 1988-12-28 1990-09-04 Pitney Bowes Inc. Mail thickness measuring apparatus
US5029304A (en) * 1988-12-28 1991-07-02 Pitney Bowes Inc. Sensor with absolute digital output utilizing Hall Effect devices
US5211387A (en) * 1989-03-31 1993-05-18 De La Rue Systems Limited Method and apparatus for feeding articles
US5056771A (en) * 1989-08-25 1991-10-15 Lexmark International, Inc. Apparatus for controlling interpage gaps in printers and method of interpage gap control
US5121914A (en) * 1989-10-27 1992-06-16 Hargreaves Edward W Apparatus for controlling the spacing, counting and batching of sheets fed by a machine
US5201397A (en) * 1990-10-05 1993-04-13 Electrocom Automation L.P. Method and apparatus for separating a stack of products into a stream of single products for sorting
JP3179226B2 (ja) * 1993-01-13 2001-06-25 株式会社リコー 自動原稿給紙装置
US5321252A (en) * 1993-05-03 1994-06-14 Pitney Bowes Inc. Improved driver circuitry for multiple sensors
JPH072409A (ja) * 1993-05-06 1995-01-06 Licentia Patent Verwalt Gmbh 偏平な発送物の転向装置
US5493104A (en) * 1993-08-19 1996-02-20 The Langston Corporation Method and apparatus for automatically separating boxes in a counter ejector into stacks
DE4419430A1 (de) 1994-06-03 1995-12-07 Licentia Gmbh Verfahren zur Steuerung der Eingabestation für eine Briefsortieranlage
US5516094A (en) * 1994-06-24 1996-05-14 Xerox Corporation Linear array sensor for copy sheet registration
US5575466A (en) * 1994-11-21 1996-11-19 Unisys Corporation Document transport with variable pinch-roll force for gap adjust
DE19528828C1 (de) * 1995-08-05 1996-08-29 Licentia Gmbh Verfahren zur Steuerung einer Briefverteilanlage
DE19607304C1 (de) * 1996-02-27 1997-07-31 Aeg Electrocom Gmbh Verfahren zur Steuerung einer Abzugsvorrichtung für flache Sendungen von einem Stapel
DE19609068A1 (de) * 1996-03-08 1997-09-11 Aeg Electrocom Gmbh Verteilanlage für flache Gegenstände
DE19625044A1 (de) * 1996-06-22 1998-01-02 Siemens Ag Verfahren zum Erkennen von Überlappungen von flachen Sendungen
DE19642350C1 (de) * 1996-10-14 1997-10-09 Aec Electrocom Gmbh Vorrichtung zur Korrektur der Sendungslücken in einem Strom flacher Sendungen
US6499733B1 (en) 1996-10-22 2002-12-31 Oce Printing Systems Gmbh Method and apparatus for feeding sheet material into a printer or copier
US5813327A (en) * 1996-12-26 1998-09-29 Pitney Bowes Inc. Article transport apparatus
US6378859B1 (en) 1998-01-15 2002-04-30 Siemens Aktiengesellschaft Method for controlling a device used to remove packages from a pile
DE19801309C1 (de) * 1998-01-15 1999-08-12 Siemens Ag Verfahren zur Steuerung einer Abzugsvorrichtung für flache Sendungen von einem Stapel
DE19835828C1 (de) * 1998-08-07 1999-08-05 Siemens Ag Verfahren und Vorrichtung zum Abzug flacher Sendungen von einem Stapel
US6076821A (en) * 1998-09-14 2000-06-20 Lexmark International, Inc. Method and apparatus for feeding sheets
US6322069B1 (en) * 1999-03-12 2001-11-27 Xerox Corporation Interpaper spacing control in a media handling system
US6662929B1 (en) * 2000-11-17 2003-12-16 Lockhead Martin Corporation Parcel singulation software control logic
US6817610B2 (en) 2001-12-03 2004-11-16 Siemens Aktiengesellschaft Multiples detect apparatus and method
US6685184B2 (en) * 2002-03-11 2004-02-03 Pitney Bowes Inc Transport method and system for controlling timing of mail pieces being processed by a mailing system
DE10350623B3 (de) * 2003-10-30 2005-04-14 Siemens Ag Vorrichtung zum Vereinzeln von flachen Sendungen in stehender Position aus einem Sendungsstapel
DE10355292B4 (de) * 2003-11-27 2005-11-03 Siemens Ag Verfahren und Einrichtung zum Vereinzeln von flachen Sendungen
US8016282B2 (en) * 2007-12-21 2011-09-13 Pitney Bowes Inc. Transport for singulating items
US7999206B2 (en) * 2008-03-14 2011-08-16 Siemens Industry, Inc. Method and system for sorting of extended capability mail
US20090283963A1 (en) * 2008-05-13 2009-11-19 Bowe Bell+ Howell Company Automatic feeder control system to account for input variations
US8002263B2 (en) * 2008-08-05 2011-08-23 Siemens Industry, Inc. Pickoff mechanism for mail feeder

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Also Published As

Publication number Publication date
DE3424397A1 (de) 1986-01-09
US4691912A (en) 1987-09-08
EP0167091A1 (fr) 1986-01-08
DE3568718D1 (en) 1989-04-20

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