EP1721683B1 - Verfahren und Vorrichtung zum Sortieren von Sendungen mit vorhersagbarem Austausch von Sortierendstellenbehältern - Google Patents

Verfahren und Vorrichtung zum Sortieren von Sendungen mit vorhersagbarem Austausch von Sortierendstellenbehältern Download PDF

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Publication number
EP1721683B1
EP1721683B1 EP06113593A EP06113593A EP1721683B1 EP 1721683 B1 EP1721683 B1 EP 1721683B1 EP 06113593 A EP06113593 A EP 06113593A EP 06113593 A EP06113593 A EP 06113593A EP 1721683 B1 EP1721683 B1 EP 1721683B1
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EP
European Patent Office
Prior art keywords
sorting
pass
item
tray
sort
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Expired - Fee Related
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EP06113593A
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English (en)
French (fr)
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EP1721683A1 (de
Inventor
Bruno Cartal
Karim Kara
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Solystic SAS
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Solystic SAS
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07CPOSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C3/00Sorting according to destination
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S209/00Classifying, separating, and assorting solids
    • Y10S209/90Sorting flat-type mail

Definitions

  • the present invention relates to a method for sorting in several passes postal items in a sorting machine, in particular a bucket carousel sorting machine, comprising sorting outlets with removable bins for storing sorted items (cf. WO-A-01/23108 ).
  • bins are part of an automatic bin handling system known as "ATHS" ("Automated Tray Handling System”).
  • the object of the invention is to propose a simple solution for managing situations where a full bin is replaced by an empty bin and which preserves the operational flow of a bucket carousel of a sorting machine.
  • the invention also extends to a postal sorting machine arranged to implement the method described above.
  • the figure 1 is a very schematic view of a bucket carousel postal sorting machine arranged to implement the method according to the invention.
  • the figure 2 is a block diagram illustrating different steps of a first sorting pass of a method for sorting postal items according to the invention.
  • the figure 3 is a block diagram illustrating different steps of a second sorting pass of a method for sorting postal items according to the invention.
  • the figure 4 illustrates the fill level monitoring thresholds of sort output bins.
  • the figure 5 is a block diagram illustrating various steps of a particular implementation of the second sorting pass of the method according to the invention.
  • FIG. 1 there is shown a postal sorting machine 1 with two entry and unstacking devices 2 which serially send postal items to convey them one by one on edge to devices 3 automatic address recognition by OCR, video coding or reading bar code.
  • the postal items are then injected into the buckets of an injection carousel 4 and then injected into the cups 5 of a carousel 6 which circulate in the direction indicated by the arrow 7 above a plurality of sorting outlets provided with removable bins (not shown).
  • Each bucket 5 normally carries a single mailing to a sorting outlet.
  • the filling level of the sorting outlet bins 5 is monitored on the basis of a measurement of the thickness of each item, this thickness measurement being able to be made in the device 3.
  • the figure 2 shows the different steps of a first sorting pass according to the invention.
  • the postal items are unstacked one by one in step 21.
  • the address of the item (step 22) is determined, for example by OCR from the picture of the item. sending with the address information, the thickness of the shipment is measured (step 23) and a logical identifier is assigned to the shipment (step 24) which is for example printed in the form of a barcode on the surface of the shipment.
  • the measurement of the thickness of the shipment can be done by any conventional means and known per se.
  • the address, the thickness and the logical identifier associated with the current item are stored correspondingly in memory in step 25.
  • a logical destination corresponding to a sorting output is determined from a sorting plan 27 and the address of the shipment.
  • the logical destination is, for example, a routing point, a distribution point of a factor tour, or a set of distribution points or routing points.
  • the current mail is then directed (step 28) to the corresponding sorting output to be stored in the bin of this sorting outlet and in step 29 the logical identifier of the mailing is recorded in correspondence with the output of sorting and / or the sorting outlet tray in which it is stored so that after this first sorting pass, we can determine the sequence of passage of the items in the sorting machine for the second sorting pass relying on the sorting plan of the second sorting pass. This sequence of passage of the items for the second sorting pass is stored in memory in step 29.
  • the bins containing the postal items are routed to the input of the sorting machine for the second pass preserving a certain order, dictated by the second pass sorting plan.
  • the delivery of the full bins at the entrance to the machine can be done automatically.
  • the figure 3 now shows the different steps of the second sorting pass of the method according to the invention.
  • step 31 the logical identifier E1 of a current item is read, for example using a barcode reader, and the address and the thickness of the item are recovered in memory.
  • step 32 a sort output is assigned to the current mail on the basis of the second pass sorting plan 33 and the address of the current mail.
  • step 34 the current send E1 is directed by the bucket carousels 4 and 6 to the sorting outlet assigned to it in step 32 to be stored in a bin of this sorting outlet.
  • a monitoring of the filling level of the corresponding sorting outlet tray 5 is carried out.
  • step 35 it determines the filling level of the tray after storage of the current mail E1.
  • the filling level is obtained in accumulating the thickness information retrieved with each passage of a current item assigned to the tray in question.
  • step 36 the filling level determined in step 35 is compared with a first threshold S1, the value of which is set to correspond to a filling level beyond which a change of tank must be controlled. If the determined filling level is greater than S1, the corresponding sorting outlet is commanded to change the empty bin by an empty bin in step 37 after storing the current mail E1 and the process continues to the next. step 31 for a new current shipment.
  • step 38 is compared with the same fill level at a second fill threshold S2 which is less than S1.
  • S2 is set to correspond to a fill level from which it is conceivable to change the tray to avoid an overflow in the sorting outlet even if this tray is not yet completely full. If the fill level is less than S2, the process continues in step 31 for a new current shipment.
  • step 39 the rank difference in the pass sequence stored in step 29 between the send E1 and the send E2 (indicated by N (E1-E2) ) is determined, as well as the difference between rank between the sending E2 and the sending E3 (indicated by N (E2-E3) ).
  • rank difference is meant the number of items intercalated between items E1 and E2 or items E2 and E3 in the sequence of passage of items.
  • step 40 these deviations are compared with a threshold value N. More particularly if N (E1-E2) is greater than N and if N (E2-E3) is less than N, the replacement of the tray of the sorting outlet by an empty tray (step 37) after the deposit of the current mail E1.
  • the value N is set to correspond to the time required to perform a tray change in a sorting outlet. In step 40, therefore, management is predictive of the ferry change. If not in step 40, the process is continued at 41.
  • step 41 the filling level of the sorting outlet tray is determined by anticipating by adding the thickness of the mailpiece E2 stored in step 25.
  • step 42 the filling level ( determined in step 41) at a third threshold S3 greater than S1. If the filling level is greater than the threshold S3 maximum filling of the tray, it controls the change of the tray in the sorting outlet (step 37) after the deposit of the current mail E1. If not, the process continues in step 31 for a new current send.
  • the sort output bin When performing a bin change following steps 36 and 42, it is possible for the sort output bin to be in an overflow state.
  • the duration during which this injection is suspended can be set according to the number N (E1-E2) and the change time of a sorting output bin.
  • the duration of this suspension is for example inversely proportional to N (E1-E2) . This suspension can only be performed if this suspension period is short enough to generate an advantage greater than the rejection of the shipment.
  • the shipment can direct the shipment to a reserve or overflow outlet.
  • step 39 It is also possible in conjunction with step 39 to calculate the level of filling of the bin if all the shipments of this second pass are sorted. If this filling level does not exceed the maximum filling threshold S3 of the tray, it is not necessary to perform a tray change and the process continues in step 31 for a new current shipment.
  • the filling thresholds S1, S2 and S3 of a sorting outlet pan 8 are represented with the current mail item E1.
  • the filling threshold S2 is less than the filling threshold S1, which itself is less than the filling threshold S3.
  • the threshold S3 corresponds to the maximum filling level of the tray, that is to say which can not be exceeded, and therefore if it is calculated that the filling level after deposit of a shipment exceeds this only S3, this shipment can not be received in this tray.
  • the threshold S1 corresponds to a predetermined limit to make the decision that a bin is full, that is to say that when calculating that after deposit of a shipment this threshold is exceeded, it is decided that this bin can not receive any more shipments after storage of this shipment. Therefore, the threshold S3 is reached only when one wants to deposit a very thick shipment (thicker than the difference in height between S3 and S1), otherwise the threshold S1 would have been crossed beforehand.
  • the threshold S2 corresponds to a partial filling level of the tank considered sufficient so that once exceeded can make the decision to change it in order to avoid an overflow. Thus, once the threshold S2 exceeded, we try to determine the best time to perform a tray change. Once this threshold is exceeded, it is more advantageous not to overflow than to fill the tank to the maximum.
  • the threshold N corresponds to the number of items that have time to be sorted in the sorting machine during the duration of a bin change. At a tray change that lasts 5 seconds equals a value of N equal to 50.
  • step 39 the difference of rank in the passage sequence stored in step 29 between the sending E1 and the sending E2 (indicated by N (E1-E2) ) and the difference in rank between the sending E2 and the sending E3 (indicated by N (E2-E3) ).
  • step 40 these deviations are compared with a threshold value N.
  • N (E1-E2) is greater than N and if N (E2-E3) is less than N
  • it is determined at step 44 by anticipating the filling level of the sorting outlet bin by adding the thickness of the items E2 and E3 stored in step 25.
  • the level of filling is compared with step 45 at the third threshold S3 and if the filling level is greater than S3, the change of the tray in the sorting outlet (step 37) is ordered after the deposit of the current mail E1. If not, the process continues in step 31 for a new current send. In steps 39 ', 40', 44 and 45, therefore, a predictive management of the bin change is carried out.
  • step 40 If not in step 40 ', the process continues in step 31 for a new current send.
  • the method according to the invention is not limited to carousel sorting machines but can be implemented on any postal sorting machine.

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  • Sorting Of Articles (AREA)

Claims (6)

  1. Verfahren zum Sortieren von Postsendungen in mehreren Sortierdurchgängen in einer Sortiermaschine (1), umfassend Sortierausgänge mit abnehmbaren Behältern zur Lagerung der Sendungen, umfassend die folgenden Schritte, darin bestehend:
    - nach einem ersten Sortierdurchgang, in dem die sortierten Sendungen in den Behältern (8) gelagert werden, die Durchgangssequenz der Sendungen in der Sortiermaschine für den anschließenden Sortierdurchgang zu bestimmen und zu speichern (29);
    - während dieser anschließenden Sortierdurchgang beim Durchgang einer laufenden Sendung (E1), die zu einem Ausgangssortierbehälter geleitet werden soll, in der Durchgangssequenz den Platzabstand (N(E1-E2)) zwischen der laufenden Sendung (E1) und der unmittelbar auf die laufende Sendung folgenden Sendung (E2), die für denselben Ausgangssortierbehälter wie die laufende Sendung vorgesehen ist, zu bestimmen (39; 39') und diesen Abstand mit einer Schwelle (N) zu vergleichen (40; 40'), um den Ersatz des Ausgangssortierbehälters durch einen leeren Behälter zu bewirken (37).
  2. Verfahren nach Anspruch 1, bei dem beim anschließenden Sortierdurchgang in der Durchgangssequenz der Platzabstand zwischen der auf die laufende Sendung (E1) folgenden Sendung (E2) und einer unmittelbar auf die folgende Sendung (E2) folgenden Sendung (E3) bestimmt wird (39, 39'), die für denselben Ausgangssortierbehälter wie die laufende Sendung (E1) oder die folgende Sendung (E2) vorgesehen ist, und dieser Abstand mit der Schwelle (N) verglichen wird, um den Ersatz des Ausgangssortierbehälters durch einen leeren Behälter zu bewirken (37).
  3. Verfahren nach einem der Ansprüche 1 oder 2, bei dem während des ersten Sortierdurchgangs die Dicke jeder Sendung gemessen (23) und aufgezeichnet (25) wird, und bei dem während des anschließenden Sortierdurchgangs der Füllstand der Behälter (8) auf Basis dieser Dickendaten kontrolliert wird.
  4. Verfahren nach einem der vorhergehenden Ansprüche, bei dem der Füllstand eines Ausgangssortierbehälters beim Durchgang einer laufenden Sendung (E1) bestimmt wird (35), und, wenn (36) der Füllstand über einer ersten Schwelle (S1) liegt, der Ersatz des Ausgangssortierbehälters durch einen leeren Behälter bewirkt wird (37), wenn (38) der Füllstand über einer zweiten Schwelle (S2) liegt, die unter der ersten Schwelle liegt, der Platzabstand zwischen der laufenden Sendung und der auf die laufende Sendung in der Durchgangssequenz folgenden Sendung bestimmt wird.
  5. Verfahren nach Anspruch 4, bei dem ferner der Füllstand des Behälters mit der auf die laufende Sendung (E1) folgenden Sendung (E2) bestimmt wird (44), und dieser Füllstand mit einer dritten Schwelle (S3), die über der ersten Schwelle (S1) liegt, verglichen (45) wird, um den Ersatz des Ausgangssortierbehälters durch einen leeren Behälter zu bewirken (37).
  6. Postsortiermaschine (1) für den Einsatz des Verfahrens nach einem der Ansprüche 1 bis 5, umfassend:
    - Sortierausgänge mit abnehmbaren Behältern für die Lagerung der Sendungen;
    - Mittel, um nach einem ersten Sortierdurchgang, bei dem die sortierten Sendungen in den Behältern gelagert werden, die Durchgangssequenz der Sendungen in der Sortiermaschine für den anschließenden Sortierdurchgang zu bestimmen und speichern;
    - Mittel, um während dieses anschließenden Sortierdurchgangs beim Durchgang einer laufenden Sendung, die zu einem Ausgangssortierbehälter zu leiten ist, in der Durchgangssequenz den Platzabstand (N(E1-E2)) zwischen der laufenden Sendung (E1) und einer unmittelbar auf die laufende Sendung folgenden Sendung (E2) zu bestimmen, die für denselben Ausganssortierbehälter wie die laufende Sendung bestimmt ist; und
    - Mittel, um diesen Abstand mit einer Schwelle (N) zu vergleichen, um den Ersatz des Ausgangssortierbehälters durch einen leeren Behälter zu bewirken.
EP06113593A 2005-05-13 2006-05-05 Verfahren und Vorrichtung zum Sortieren von Sendungen mit vorhersagbarem Austausch von Sortierendstellenbehältern Expired - Fee Related EP1721683B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0551258A FR2885543B1 (fr) 2005-05-13 2005-05-13 Procede pour trier des envois avec une gestion predictive du remplacement des bacs de sortie de tri

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EP1721683A1 EP1721683A1 (de) 2006-11-15
EP1721683B1 true EP1721683B1 (de) 2012-05-02

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US (1) US7439468B2 (de)
EP (1) EP1721683B1 (de)
FR (1) FR2885543B1 (de)

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Publication number Priority date Publication date Assignee Title
US20050107910A1 (en) * 2003-11-19 2005-05-19 Hanson Bruce H. System and method of filling containers
DE102008015313A1 (de) * 2007-09-18 2009-03-19 Siemens Aktiengesellschaft Verfahren und Vorrichtung zum Bearbeiten und Transportieren von Gegenständen in einer Reihenfolge
US8504192B2 (en) * 2007-12-13 2013-08-06 Solystic Method of sorting mailpieces by using a process for dynamically allocating sorting outlets
EP2298457A1 (de) * 2009-09-18 2011-03-23 ELSAG DATAMAT S.p.A. Postsortiervorrichtung
DE102010012069A1 (de) * 2010-03-19 2011-09-22 Siemens Aktiengesellschaft Sortierverfahren und Sortiervorrichtung für ergonomisches Sortieren in zwei Sortierläufen
DE102010012068A1 (de) * 2010-03-19 2011-09-22 Siemens Aktiengesellschaft Sortierverfahren und Sortiervorrichtung für verschiedenartige Gegenstände

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US3573748A (en) * 1969-02-24 1971-04-06 Ibm Postal system
US5414974A (en) * 1993-08-17 1995-05-16 Moore Business Forms, Inc. Automated document handling system
JPH09239325A (ja) * 1996-03-11 1997-09-16 Hitachi Ltd 郵便物配達順並べ替え区分方法および装置
US6316741B1 (en) * 1999-06-04 2001-11-13 Lockheed Martin Corporation Object sortation for delivery sequencing
US6953906B2 (en) * 1999-08-02 2005-10-11 Rapistan Systems Advertising Corp. Delivery point sequencing mail sorting system with flat mail capability
DE19947259C1 (de) * 1999-09-30 2000-09-28 Siemens Ag Verfahren und Vorrichtung zum Sortieren von Sendungen
JP3804540B2 (ja) * 2002-01-28 2006-08-02 日本電気株式会社 薄物郵便物道順組立仕分装置
US6881916B2 (en) * 2003-02-13 2005-04-19 Lockheed Martin Corporation Flats sequencing system and method of use
FR2883778B1 (fr) * 2005-03-29 2007-04-27 Solystic Sas Procede de traitement d'envois postaux avec debordement dynamique

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FR2885543A1 (fr) 2006-11-17
EP1721683A1 (de) 2006-11-15
US20060259186A1 (en) 2006-11-16
US7439468B2 (en) 2008-10-21
FR2885543B1 (fr) 2007-06-15

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