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EP0101370A2 - Passage device of a post sorting equipment comprising an insertion flap for guiding the letters - Google Patents

Passage device of a post sorting equipment comprising an insertion flap for guiding the letters Download PDF

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Publication number
EP0101370A2
EP0101370A2 EP83401603A EP83401603A EP0101370A2 EP 0101370 A2 EP0101370 A2 EP 0101370A2 EP 83401603 A EP83401603 A EP 83401603A EP 83401603 A EP83401603 A EP 83401603A EP 0101370 A2 EP0101370 A2 EP 0101370A2
Authority
EP
European Patent Office
Prior art keywords
drum
letter
bench
pulses
shutter
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.)
Withdrawn
Application number
EP83401603A
Other languages
German (de)
French (fr)
Other versions
EP0101370A3 (en
Inventor
Claude Pavie
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.)
HBS
Original Assignee
Hotchkiss Brandt Sogeme HBS SA
HBS
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 Hotchkiss Brandt Sogeme HBS SA, HBS filed Critical Hotchkiss Brandt Sogeme HBS SA
Publication of EP0101370A2 publication Critical patent/EP0101370A2/en
Publication of EP0101370A3 publication Critical patent/EP0101370A3/en
Withdrawn legal-status Critical Current

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    • 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
    • B07C1/025—Devices for the temporary stacking of objects provided with a stacking and destacking device (interstack device)

Definitions

  • the invention relates to a mail sorting scrolling bench and an insertion flap intended for guiding letters, more particularly adapted to guiding letters driven by a system of belts and which have to be introduced one by one into each box. a rotating drum before being oriented towards the sorting machine proper.
  • the present invention aims to solve all these problems of guiding the letter during its insertion in the box as well as the problems of frequency control and phase of the arrival and insertion of letters. It more generally relates to a scrolling bench, comprising a conveyor system animated with a proper speed v, receiving letters from a store destacker and injecting them into moving receptacles. It also relates to an insertion component which has the function of widening the time interval available for inserting the letters.
  • the invention relates to a scrolling bench equipped with such a shutter, and comprising a servo system linking the operation of the destacker to the operation of the drum.
  • the present invention therefore essentially relates to an insertion flap intended for guiding the letters, during their insertion in the boxes of a rotating drum, characterized in that this flap has an axis ensuring its pivoting in the direction of rotation of the drum according to a angle o (, during which it accompanies the letter, thus increasing the time interval available for the insertion of this one in the corresponding box of the drum.
  • FIG. 1 schematically represents a scrolling bench B equipped with an insertion flap 1 according to the invention.
  • This bench essentially comprises a destacker 2 of a known type. It may in particular be a perforated wall drum against which the letters are sucked up and rolled up one by one when the drum is placed under vacuum before being driven by a belt conveyor system 100.
  • the destacker 2 is supplied by means of a magazine 3 comprising for example fingers 4 between which the operator deposits the lettes, the fingers 4 advancing as shown by the arrow F I towards the destacker and cooperating in a conventional manner with different systems of jogging rollers (not shown).
  • a control and display console 5 makes it possible to follow the progress of operations.
  • the unstacking rate is set by the drum.
  • the unstacked letters are then taken care of by a belt conveyor system schematically illustrated by a dotted line 100 and the arrow F 2 giving the direction of scrolling of the letters, which drive them along the reading module 6 comprising the stabilization devices of letters, the reject stacker and above all the indexing read head.
  • These elements being known have not been shown. They are grouped inside the reading module 6. At the exit of this module 6, the letters continue their progression towards the drum 7. The latter is divided into a plurality of sectors 8 limited by side walls such as 9 and 10. These are as many sectors as there are boxes. These sectors or boxes have a truncated V-shaped section whose tip would be located on the axis of the drum 7, parallel to the drive axis of the letters 12.
  • An insertion flap 1 is positioned at the interface between the system for conveying the letters 12 and the drum 7. This flap follows the movement of the drum so that each letter is guided by it for a sufficient time. so that it is completely inserted in box 8, itself driven in rotation and this without striking the edge of one or other of the side walls 9 and 10. The insertion is complete, the box continues its trajectory, the flap returns to its initial position to place itself in front of a new box and thus start a new cycle.
  • the direction of rotation of the drum is represented by the arrow R.
  • the letter falls by gravity into a rack 20 driven as symbolized by the arrow F 3 towards a sorting machine not shown.
  • FIG 2 there is shown schematically the mechanical connections connecting the drive means between them.
  • the clutch 21 of the drum 7 is connected by a chain system 22 to a cam 23 which drives the insertion flap 1 in its reciprocating movement defined above and which will be more widely explained below.
  • This chain link system 22 is connected to the drive system 24 of the sorting machine (not shown).
  • the drum is also linked to the drive system 24. This gives synchronism between the different elements constituting the sorting equipment.
  • FIG. 3 is a diagram illustrating the insertion flap 1 according to the invention as well as its cooperation with the drum 7.
  • This flap 1 consists of two flanges 30 and 31 defining a guide rail 32 in which the letter 12 brought by the conveyor system is introduced.
  • This conveying system is for example made up of two belts 33 and 34 driven in movement by means of two motorized pulleys 35 and 36 whose respective directions of rotation are symbolized by the arrows P 1 and P2.
  • the two flanges 30 and 31 are integral with an upper base 40 and a lower base 41 which stiffens the assembly.
  • An axis 45 passes through these two bases so that when it is rotated (arrow P 3 ), it drives the two flanges 30 and 31 in its movement.
  • This axis 45 is also integral with a plate 46 carrying at one of its ends a roller 47 and a return spring 48.
  • a cam 23 is rotated in the direction of the arrow P 4 by the chain 22 (figure 2). The profile of this cam 23 cooperates with the roller 47 and the spring 48 to impart to the shutter 1 the movement back and forth.
  • each box 8 has a section in the form of a truncated V and is delimited on the one hand, by two side walls 9 and 10 adjoining elsewhere respectively with the previous box 8a and the next box 8b, on the other hand by a base 50 whose width is a function of the inside diameter of the drum 7 and the number of boxes distributed around the circumference of this drum 7.
  • the drum is divided into 18 sectors therefore in 18 boxes whose walls make between them an angle ⁇ equal to 20 °.
  • each box in particular of box 8 used to illustrate the operation of the device according to the invention, passes through the intersection O of the two axes (xy) and (x', y ') of the drum 7
  • the profile of the cam 23 is determined so that for a given time the slide 32 delimited by the two flanges 30 and 31 of the flap 1 follow the rotational movement of the drum 7 at the same speed as the latter .
  • the debate of this component 1 is limited to an angle ⁇ , allowing the component to follow the box during most of its passage.
  • the roller 47 is held on the cam 23 by the return spring 48 which returns the flap 1 to its initial position to allow it to take over a new letter for the guide during its insertion in the following box 8b.
  • the axis of the slide 32 substantially follows the axis (aa ') of the box concerned.
  • FIG. 4 illustrates this accompanying movement of the shutter 1.
  • FIG. 4 are shown two time windows corresponding to the time of insertion of the letters in the drum (T 1 ) on the one hand, (T 3 -T 2 ) on the other hand, between which is the time (T 2 -T 1 ) for the shutter to return to its initial position.
  • the cycle repeats as many times as there are boxes to fill.
  • FIG. 5 is a diagram representing the movement of the shutter as a function of time. ⁇ angle through which the shutter in its accompanying phase follows an increasing ramp during the time (T.) ... (T3-T2) etc ... and a descending ramp steeper during the time ( T 2 -T 1 ) ... (T 4 -T 3 ) etc ... corresponding to the return of the shutter to its initial position, position which precedes a new assumption of responsibility.
  • FIG. 6 schematically represents a servo system synchronizing the unstacking with the movement of the drum 7 taking into account the variations in speed of this drum as well as variations in the speed of the conveyor system.
  • the letters 12 are conveyed from the destacker 2 to the drum 7 at a speed v. This speed can be affected by possible slow variations of the order of 5% and rapid variations of plus or minus 1%.
  • the letter / drum synchronization is obtained by optimizing the instant of unstacking letter by letter.
  • the problem consists in calculating the theoretical starting instant of the letter so that the arrival of its front edge at the end of the bench coincides with the passage of a box in front of the slide of the insertion flap 1 in the initial starting position as as defined above.
  • an encoder 24 (said drum encoder) is used which is synchronous with the latter and which supplies pulses called TTAMB (drum pulse) at the rate of 6 pulses per second in the case of the example described.
  • TTAMB drum pulse
  • the unstacking pulses are provided at the same frequency as the TTAMB pulses, namely one pulse per drum sector, these unstacking and drum pulses not necessarily being in phase as will be said below.
  • an encoder 60 (called bench encoder) synchronous with the bench and conveyor belts provides pulses at 4,000 hertz at a speed of 3.6 meters per second; between two pulses from the bench encoder 60, a letter for a fixed distance whatever the speed of the bench. Therefore, the times given by the encoder 60 represent a unit of distance measurement. It follows that the course of the total length L of the bench corresponds to a number N of pulses from the encoder 60. This course takes place approximately during a number k of pulses from the drum encoder 24.
  • each of the drums ensures filling of one of the two compartments of the bin 20 of the sorting machine.
  • the present invention finds its application in any postal sorting equipment or is posed an interface problem between a letter drive system by belt and a system of letter receiving boxes in the form of a rotating drum. .

Landscapes

  • Sorting Of Articles (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)

Abstract

@ L'invention concerne un volet d'insertion destiné au guidage des lettres durant leur insertion dans les cases d'un tambour tournant.@ The invention relates to an insertion flap for guiding letters during their insertion in the boxes of a rotating drum.

Il s'agit d'injecter axialement dans une case d'un tambour tournant, à vitesse angulaire Ω, une lettre arrivant à la vitresse v. Pour cela, un volet prend en charge la lettre à l'interface entre le système de convoyage et le tambour, le volet pivote dans le sens de rotation du tambour à la même vitesse angulaire que lui et accompagne ainsi la lettre en augmentant le temps disponible d'insertion avant de revenir brusquement à sa position initiale pour recommencer un nouveau cycle ; ceci permet de compenser les fluctuations rapides de vitesse du tambour et du banc tandis qu'un calcul de l'instant de départ de chaque lettre permet de compenser les fluctuations lentes de vitesse du tambour et du banc.It involves injecting axially into a box of a rotating drum, at an angular speed Ω, a letter arriving at the speed v. For this, a flap takes charge of the letter at the interface between the conveyor system and the drum, the flap pivots in the direction of rotation of the drum at the same angular speed as it and thus accompanies the letter by increasing the time available insertion before suddenly returning to its initial position to start a new cycle; this makes it possible to compensate for the rapid fluctuations in speed of the drum and the bench while a calculation of the start time of each letter makes it possible to compensate for the slow fluctuations in speed of the drum and the bench.

L'invention trouve son application dans tous les équipements de tri postal où se recontre un interface entre un système de courroies d'acheminement des lettres et un système de cases de réception en forme de tambour tournant.

Figure imgaf001
The invention finds its application in all postal sorting equipment where there is an interface between a system of letter conveyor belts and a system of receiving boxes in the form of a rotating drum.
Figure imgaf001

Description

L'invention concerne un banc de défilement de tri de courrier ainsi qu'un volet d'insertion destiné au guidage des lettres plus spécialement adapté au guidage des lettres entraînées par un système de courroies et devant être introduites une par une dans chaque case d'un tambour tournant avant d'être orientées vers la machine de tri proprement dite.The invention relates to a mail sorting scrolling bench and an insertion flap intended for guiding letters, more particularly adapted to guiding letters driven by a system of belts and which have to be introduced one by one into each box. a rotating drum before being oriented towards the sorting machine proper.

Les cadences requises, les dimensions variables des lettres, les tolérances diverses font que cette opération de transfert de chaque lettre, dans une case du tambour qui tourne, est délicate. Il s'agit en effet d'injecter axialement dans une case d'un tambour tournant à la vitesse angulaire Ω, une lettre arrivant à la vitesse v, motorisée entre deux courroies pincées. La lettre a une longueur L et une épaisseur e. Le tambour est divisé en n secteurs circulaires dont les parois font entre elles un angle (a). Les lettres tombent ensuite dans des casiers défilant sous le tambour. Les difficultés sont les suivantes Ω est affectée de variations lentes et de variations plus rapides d'un secteur à l'autre. Les variations lentes ou les dérives ou les défauts de réglage peuvent être estimés à ±5%. Les variations rapides sont estimées à ±10% ; d'autre part v peut être affecté de plus ou moins de variations suivant le soin apporté à la motorisation des courroies ; enfin la lettre doit être synchronisée avec le mouvement du tambour.The required cadences, the variable dimensions of the letters, the various tolerances make this operation of transferring each letter, in a box of the drum that turns, is delicate. It is indeed a question of injecting axially into a box of a drum rotating at the angular speed Ω, a letter arriving at speed v, motorized between two pinched belts. The letter has a length L and a thickness e. The drum is divided into n circular sectors, the walls of which form an angle (a). The letters then fall into lockers scrolling under the drum. The difficulties are as follows Ω is affected by slow variations and faster variations from one sector to another. Slow variations or drifts or adjustment errors can be estimated at ± 5%. Rapid variations are estimated at ± 10%; on the other hand v can be affected by more or less variations depending on the care taken in the motorization of the belts; finally the letter must be synchronized with the movement of the drum.

La présente invention a pour but de résoudre tous ces problèmes de guidage de la lettre durant son insertion dans la case ainsi que les problèmes d'asservissement en fréquence et en phase de l'arrivée et de l'insertion des lettres . Elle concerne plus généralement un banc de défilement, comportant un système de convoyage animé d'une vitesse propre v, recevant les lettres d'un magasin dépileur et les injectant dans des réceptacles en mouvement. Elle concerne de plus un volet d'insertion qui a pour fonction d'élargir l'intervalle de temps disponible pour insérer les lettres. L'invention concerne un banc de défilement équipé d'un tel volet, et comportant un système d'asservissement liant le fonctionnement du dépileur au fonctionnement du tambour.The present invention aims to solve all these problems of guiding the letter during its insertion in the box as well as the problems of frequency control and phase of the arrival and insertion of letters. It more generally relates to a scrolling bench, comprising a conveyor system animated with a proper speed v, receiving letters from a store destacker and injecting them into moving receptacles. It also relates to an insertion component which has the function of widening the time interval available for inserting the letters. The invention relates to a scrolling bench equipped with such a shutter, and comprising a servo system linking the operation of the destacker to the operation of the drum.

La présente invention concerne donc essentiellement un volet d'insertion destiné au guidage des lettres, durant leur insertion dans les cases d'un tambour tournant, caractérisé en ce que ce volet comporte un axe assurant son pivotement dans le sens de rotation du tambour selon un angle o(, durant lequel il accompagne la lettre, augmentant ainsi l'intervalle de temps disponible pour l'insertion de celle-ci dans la case correspondante du tambour.The present invention therefore essentially relates to an insertion flap intended for guiding the letters, during their insertion in the boxes of a rotating drum, characterized in that this flap has an axis ensuring its pivoting in the direction of rotation of the drum according to a angle o (, during which it accompanies the letter, thus increasing the time interval available for the insertion of this one in the corresponding box of the drum.

L'invention sera mieux comprise à l'aide des explications, qui vont suivre et des figures jointes parmi lesquelles :

  • - la figure 1 est un schéma explicatif montrant l'architecture d'une machine d'approvisionnement équipée d'un volet d'insertion selon l'invention ;
  • - la figure 2 est un schéma montrant comment sont reliés les moyens d'entraînement du tambour d'une part et du volet d'insertion d'autre part ;
  • - la figure 3 représente plus en détail un volet d'insertion selon l'invention ;
  • - les figures 4 et 5 sont des schémas explicatifs illustrant le fonctionnement du volet selon l'invention ;
  • - la figure 6 représente schématiquement un système d'asservissement synchronisant le dépilage avec le mouvement de rotation du tambour.
The invention will be better understood with the aid of the explanations which will follow and of the appended figures among which:
  • - Figure 1 is an explanatory diagram showing the architecture of a supply machine equipped with an insertion flap according to the invention;
  • - Figure 2 is a diagram showing how the drive means of the drum are connected on the one hand and the insertion flap on the other hand;
  • - Figure 3 shows in more detail an insertion flap according to the invention;
  • - Figures 4 and 5 are explanatory diagrams illustrating the operation of the shutter according to the invention;
  • - Figure 6 schematically shows a servo system synchronizing the unstacking with the rotary movement of the drum.

Les mêmes éléments portent les mêmes références dans toutes les figures.The same elements have the same references in all the figures.

La figure 1 représente schématiquement un banc de défilement B équipé d'un volet d'insertion 1 conforme à l'invention. Ce banc comporte essentiellement un dépileur 2 d'un type connu. Il peut s'agir notamment d'un tambour à paroi perforée contre laquelle les lettres sont aspirées et s'enroulent une à une quand le tambour est mis en dépression avant d'être entraînées par un système de convoyage à courroies 100.FIG. 1 schematically represents a scrolling bench B equipped with an insertion flap 1 according to the invention. This bench essentially comprises a destacker 2 of a known type. It may in particular be a perforated wall drum against which the letters are sucked up and rolled up one by one when the drum is placed under vacuum before being driven by a belt conveyor system 100.

Le dépileur 2 est alimenté au moyen d'un magasin 3 comportant par exemple des doigts 4 entre lesquels l'opérateur dépose les lettes, les doigts 4 avançant comme le montre la flèche FI vers le dépileur et coopérant de manière classique avec différents systèmes de rouleaux taqueurs (non représentés). Un pupitre de commande et de visualisation 5 permet de suivre le déroulement des opérations. La cadence de dépilage est fixée par le tambour.The destacker 2 is supplied by means of a magazine 3 comprising for example fingers 4 between which the operator deposits the lettes, the fingers 4 advancing as shown by the arrow F I towards the destacker and cooperating in a conventional manner with different systems of jogging rollers (not shown). A control and display console 5 makes it possible to follow the progress of operations. The unstacking rate is set by the drum.

Les lettres dépilées sont ensuite prises en charge par un système de convoyage à courroies schématiquement illustré par un pointillé 100 et la flèche F 2 donnant le sens de défilement des lettres, qui les entraînent le long du module de lecture 6 comportant les dispositifs de stabilisation de lettres, l'empileur de rejet et surtout la tête de lecture d'indexation. Ces éléments étant connus n'ont pas été représentés. Ils sont groupés à l'intérieur du module de lecture 6. A la sortie de ce module 6, les lettres continuent leur progression vers le tambour 7. Celui-ci est divisé en une pluralité de secteurs 8 limités par des parois latérales telles que 9 et 10. Il s'agit d'autant de secteurs qu'il y a de cases. Ces secteurs ou cases ont une section en forme de V tronqué dont la pointe serait située sur l'axe du tambour 7, parallèle à l'axe d'entraînement des lettres 12.The unstacked letters are then taken care of by a belt conveyor system schematically illustrated by a dotted line 100 and the arrow F 2 giving the direction of scrolling of the letters, which drive them along the reading module 6 comprising the stabilization devices of letters, the reject stacker and above all the indexing read head. These elements being known have not been shown. They are grouped inside the reading module 6. At the exit of this module 6, the letters continue their progression towards the drum 7. The latter is divided into a plurality of sectors 8 limited by side walls such as 9 and 10. These are as many sectors as there are boxes. These sectors or boxes have a truncated V-shaped section whose tip would be located on the axis of the drum 7, parallel to the drive axis of the letters 12.

Un volet d'insertion 1 selon l'invention est positionné à l'interface entre le système de convoyage des lettres 12 et du tambour 7. Ce volet suit le mouvement du tambour de telle sorte que chaque lettre soit guidée par lui durant un temps suffisant pour qu'elle se trouve complètement introduite dans la case 8, elle-même entraînée en rotation et ceci sans heurter l'arête de l'une ou l'autre des parois latérales 9 et 10. L'insertion est terminée, la case poursuit sa trajectoire, le volet revient à sa position initiale pour se placer face à une nouvelle case et recommencer ainsi un nouveau cycle. Le sens de rotation du tambour est figuré par la flèche R. Dès que la case chargée d'une lettre se trouve en position basse (position de déchargement) opposée à sa position de chargement, la lettre tombe par gravité dans un casier 20 entraînée comme le symbolise la flèche F 3 vers une machine de tri non représentée.An insertion flap 1 according to the invention is positioned at the interface between the system for conveying the letters 12 and the drum 7. This flap follows the movement of the drum so that each letter is guided by it for a sufficient time. so that it is completely inserted in box 8, itself driven in rotation and this without striking the edge of one or other of the side walls 9 and 10. The insertion is complete, the box continues its trajectory, the flap returns to its initial position to place itself in front of a new box and thus start a new cycle. The direction of rotation of the drum is represented by the arrow R. As soon as the box loaded with a letter is in the low position (unloading position gement) opposite its loading position, the letter falls by gravity into a rack 20 driven as symbolized by the arrow F 3 towards a sorting machine not shown.

Sur la figure 2, on a représenté schématiquement les liaisons mécaniques reliant les moyens d'entraînement entre eux. D'une part l'embrayage 21 du tambour 7 est relié par un système de chaine 22 à une came 23 qui entraîne le volet d'insertion 1 dans son mouvement de va et vient défini précédemment et qui sera plus largement expliqué plus loin. Ce système de liaison par chaîne 22 est relié au système d'entraînement 24 de la machine de tri (non représenté). Le tambour est également lié au système d'entraînement 24. On obtient ainsi un synchronisme entre les différents éléments constituant l'équipement de tri.In Figure 2, there is shown schematically the mechanical connections connecting the drive means between them. On the one hand, the clutch 21 of the drum 7 is connected by a chain system 22 to a cam 23 which drives the insertion flap 1 in its reciprocating movement defined above and which will be more widely explained below. This chain link system 22 is connected to the drive system 24 of the sorting machine (not shown). The drum is also linked to the drive system 24. This gives synchronism between the different elements constituting the sorting equipment.

La figure 3 est un schéma illustant le volet d'insertion 1 conforme à l'invention ainsi que sa coopération avec le tambour 7. Ce volet 1 est constitué de deux flasques 30 et 31 délimitant une glissière de guidage 32 dans laquelle la lettre 12 amenée par le système de convoyage est introduite. Ce système de convoyage est par exemple constitué de deux courroies 33 et 34 entraînées en mouvement au moyen de deux poulies motorisées 35 et 36 dont les sens de rotation respectifs sont symbolisés par les flèches P1 et P2. Les deux flasques 30 et 31 sont solidaires d'un embase supérieure 40 et d'une embase inférieure 41 qui rigidifie l'ensemble. Un axe 45 traverse ces deux embases de telle sorte que lorqu'il est entraîné en rotation (flèche P3), il entraîne les deux flasques 30 et 31 dans son mouvement. Cet axe 45 est également solidaire d'une platine 46 portant à l'une de ses extrémités un galet 47 et un ressort de rappel 48. Un came 23 est entraînée en rotation dans le sens de la flèche P 4 par la chaîne 22 (figure 2). Le profil de cette came 23 coopère avec le galet 47 et le ressort 48 pour imprimer au volet 1 le mouvement de va et vient.Figure 3 is a diagram illustrating the insertion flap 1 according to the invention as well as its cooperation with the drum 7. This flap 1 consists of two flanges 30 and 31 defining a guide rail 32 in which the letter 12 brought by the conveyor system is introduced. This conveying system is for example made up of two belts 33 and 34 driven in movement by means of two motorized pulleys 35 and 36 whose respective directions of rotation are symbolized by the arrows P 1 and P2. The two flanges 30 and 31 are integral with an upper base 40 and a lower base 41 which stiffens the assembly. An axis 45 passes through these two bases so that when it is rotated (arrow P 3 ), it drives the two flanges 30 and 31 in its movement. This axis 45 is also integral with a plate 46 carrying at one of its ends a roller 47 and a return spring 48. A cam 23 is rotated in the direction of the arrow P 4 by the chain 22 (figure 2). The profile of this cam 23 cooperates with the roller 47 and the spring 48 to impart to the shutter 1 the movement back and forth.

Comme cela a été dit précédemment chaque case 8 présente une section en forme de V tronqué et est délimitée d'une part, par deux parois latérales 9 et 10 mitoyennes d'ailleurs respectivement avec la case précédente 8a et la case suivant 8b, d'autre part par une embase 50 dont la largeur est fonction du diamètre intérieur du tambour 7 et du nombre de cases reparties sur la circonférence de ce tambour 7. Dans un exemple de réalisation le tambour est divisé en 18 secteurs donc en 18 cases dont les parois font entre elles un angle β égal à 20°.As has been said previously, each box 8 has a section in the form of a truncated V and is delimited on the one hand, by two side walls 9 and 10 adjoining elsewhere respectively with the previous box 8a and the next box 8b, on the other hand by a base 50 whose width is a function of the inside diameter of the drum 7 and the number of boxes distributed around the circumference of this drum 7. In an exemplary embodiment the drum is divided into 18 sectors therefore in 18 boxes whose walls make between them an angle β equal to 20 °.

L'axe aa' de chaque case, notamment de la case 8 servant à illustrer le fonctionnement du dispositif conforme à l'invention, passe par l'intersection O des deux axes (xy) et (x', y') du tambour 7. Conformément à l'invention le profil de la came 23 est déterminé de manière que pendant un temps donné la glissière 32 délimitée par les deux flasques 30 et 31 du volet 1 suivent le mouvement de rotation du tambour 7 à la même vitesse que ce dernier. Le débatement de ce volet 1 est limité à un angle α, permettant au volet de suivre la case pendant la majeure partie de son passage. A la fin de la trajectoire d'accompagnement du volet 1, le galet 47 est maintenu sur la came 23 par le ressort de rappel 48 ce qui ramène le volet 1 à sa position initiale pour lui permettre de reprendre en charge une nouvelle lettre pour la guider pendant son insertion dans la case suivante 8b. Durant la phase d'accompagnement du volet 1, l'axe de la glissière 32 suit sensiblement l'axe (aa') de la case concernée.The axis aa 'of each box, in particular of box 8 used to illustrate the operation of the device according to the invention, passes through the intersection O of the two axes (xy) and (x', y ') of the drum 7 According to the invention the profile of the cam 23 is determined so that for a given time the slide 32 delimited by the two flanges 30 and 31 of the flap 1 follow the rotational movement of the drum 7 at the same speed as the latter . The debate of this component 1 is limited to an angle α, allowing the component to follow the box during most of its passage. At the end of the flap 1 accompanying trajectory, the roller 47 is held on the cam 23 by the return spring 48 which returns the flap 1 to its initial position to allow it to take over a new letter for the guide during its insertion in the following box 8b. During the support phase of the shutter 1, the axis of the slide 32 substantially follows the axis (aa ') of the box concerned.

Les figures 4 et 5 illustrent ce mouvement d'accompagnement du volet 1. Sur la figure 4 sont figurées deux fenêtres de temps correspondant au temps d'insertion des lettres dans le tambour (T1) d'une part, (T3-T2) d'autre part, entre lesquelles se situent le temps (T2-T1) de retour du volet à sa position initiale. Le cycle se répète autant de fois qu'il y a de cases à remplir. La figure 5 est un diagramme représentant le mouvement du volet en fonction du temps. L'angle α parcouru par le volet dans sa phase d'accompagnement suit une rampe croissante pendant le temps (T.) ... (T3-T 2) etc... et une rampe descendante à pente plus forte pendant le temps (T2-T1) ... (T4-T3) etc... correspondant au retour du volet à sa position initiale, position qui précède une nouvelle prise en charge.Figures 4 and 5 illustrate this accompanying movement of the shutter 1. In Figure 4 are shown two time windows corresponding to the time of insertion of the letters in the drum (T 1 ) on the one hand, (T 3 -T 2 ) on the other hand, between which is the time (T 2 -T 1 ) for the shutter to return to its initial position. The cycle repeats as many times as there are boxes to fill. FIG. 5 is a diagram representing the movement of the shutter as a function of time. Α angle through which the shutter in its accompanying phase follows an increasing ramp during the time (T.) ... (T3-T2) etc ... and a descending ramp steeper during the time ( T 2 -T 1 ) ... (T 4 -T 3 ) etc ... corresponding to the return of the shutter to its initial position, position which precedes a new assumption of responsibility.

Dans l'exemple de réalisation décrite, sur une période de passage d'un secteur de 1/6 seconde, soit 167 millisecondes, l'accompagnement s'effectue pendant un temps (T1), (T3-T2) égale à 142 millisecondes et le retour pendant un temps (T2-T1) égal à 25 millisecondes. On dispose aussi d'une marge suffisante pour admettre des variations de synchronisation provoquées par les différences de longueur de lettres qui se présentent à l'insertion dans le tambour 7. En effet à la vitesse V choisie de 3,6 mètres par seconde, une lettre de longueur, L = 292 mm met seulement 81 millisecondes pour entrer dans le tambour 7. C'est, face au 142 millisecondes correspondant à l'intervalle de temps disponible pour insérer les lettres grâce à la mise en oeuvre du volet 1 selon l'invention. Un tel dispositif présente un autre avantage, il permet de s'affranchir de l'épaisseur des lettres et des fluctuations rapides de vitesse du tambour. En effet, comme cela a été dit précédemment, l'axe du volet suit le milieu théorique du secteur (case) mais par la même occasion tolère des variations de plus ou moins 30 % de la position réelle de la case par rapport à sa postion théorique. La différence entre ces 30 % et les variations de vitesse du tambour appréciées à plus ou moins 10 % permet largement d'absorber les jeux entre les mouvements du tambour et ceux du volet ainsi que les non-linéarités qui peuvent affecter le mouvement de celui-ci. Dans la mesure donc où la lettre passe dans la glissière 32 du volet 1, elle entre forcément dans le tambour 7.In the example of embodiment described, over a period of passage of a sector of 1/6 second, or 167 milliseconds, the accompaniment takes place for a time (T 1 ), (T3-T2) equal to 142 milliseconds and the return for a time (T 2 -T 1 ) equal to 25 milliseconds. There is also a sufficient margin to admit variations in synchronization caused by the differences in length of letters which arise upon insertion into the drum 7. In fact at the chosen speed V of 3.6 meters per second, a letter of length, L = 292 mm takes only 81 milliseconds to enter the drum 7. That is, facing 142 milliseconds corresponding to the time interval available to insert the letters thanks to the implementation of shutter 1 according to l 'invention. Another advantage of such a device is that it overcomes the thickness of the letters and rapid fluctuations in drum speed. Indeed, as has been said previously, the axis of the shutter follows the theoretical environment of the sector (box) but at the same time tolerates variations of plus or minus 30% of the actual position of the box relative to its position theoretical. The difference between this 30% and the variations in speed of the drum appreciated at more or less 10% largely allows to absorb the clearances between the movements of the drum and those of the shutter as well as the non-linearities which can affect the movement of this one. this. Insofar as the letter passes through the slide 32 of the shutter 1, it necessarily enters the drum 7.

La figure 6 représente schématiquement un système d'asservissement synchronisant le dépilage avec le mouvement du tambour 7 en tenant compte des variations de vitesse de ce tambour ainsi que des variations de vitesse du système de convoyage. Les lettres 12 sont acheminées du dépileur 2 vers le tambour 7 à une vitesse v. Cette vitesse peut être affectée de variations lentes possibles de l'ordre de 5 % et de variations rapides de plus ou moins 1 %. Pour s'affranchir de ces variations et des variations lentes du tambour 7, la synchronisation lettre/tambour est obtenue en optimisant l'instant du dépilage lettre par lettre.FIG. 6 schematically represents a servo system synchronizing the unstacking with the movement of the drum 7 taking into account the variations in speed of this drum as well as variations in the speed of the conveyor system. The letters 12 are conveyed from the destacker 2 to the drum 7 at a speed v. This speed can be affected by possible slow variations of the order of 5% and rapid variations of plus or minus 1%. To overcome these variations and slow variations of the drum 7, the letter / drum synchronization is obtained by optimizing the instant of unstacking letter by letter.

Le problème consiste à calculer l'instant de départ théorique de la lettre pour que l'arrivée de son front avant en bout de banc coïncide avec le passage d'une case devant la glissière du volet d'insertion 1 en position initiale de départ tel que défini précédemment. Pour réaliser cette fonction, on met en oeuvre un codeur 24 (dit codeur de tambour) synchrone de ce dernier et qui fournit des impulsions dites TTAMB (impulsion du tambour) à la cadence de 6 impulsions par secondes dans le cas de l'exemple décrit précédemment. Les impulsions de dépilage sont prévues à la même fréquence que les impulsions TTAMB à savoir une impulsion par secteur de tambour, ces impulsions de dépilage et de tambour n'étant pas forcément en phase comme cela sera dit plus loin. Sur le parcours des lettres un codeur 60 (dit codeur de banc) synchrone du banc et des courroies de convoyage fournit des impulsions à 4 000 hertz pour une vitesse de 3,6 mètres par secondes ; entre deux impulsions du codeur banc 60, une lettre pourcourt une distance fixe quelque soit la vitesse du banc. Donc, les temps donnés par le codeur 60 représentent une unité de mesure de distance. Il en résulte que le parcours de la longueur totale L du banc correspond à un nombre N d'impulsions du codeur 60. Ce parcours a approximativement lieu pendant un nombre k d'impulsions du codeur 24 de tambour.The problem consists in calculating the theoretical starting instant of the letter so that the arrival of its front edge at the end of the bench coincides with the passage of a box in front of the slide of the insertion flap 1 in the initial starting position as as defined above. To perform this function, an encoder 24 (said drum encoder) is used which is synchronous with the latter and which supplies pulses called TTAMB (drum pulse) at the rate of 6 pulses per second in the case of the example described. previously. The unstacking pulses are provided at the same frequency as the TTAMB pulses, namely one pulse per drum sector, these unstacking and drum pulses not necessarily being in phase as will be said below. On the letter path, an encoder 60 (called bench encoder) synchronous with the bench and conveyor belts provides pulses at 4,000 hertz at a speed of 3.6 meters per second; between two pulses from the bench encoder 60, a letter for a fixed distance whatever the speed of the bench. Therefore, the times given by the encoder 60 represent a unit of distance measurement. It follows that the course of the total length L of the bench corresponds to a number N of pulses from the encoder 60. This course takes place approximately during a number k of pulses from the drum encoder 24.

A la distance pourcourue par une lettre entre 2 TTAMB correspond un nombre d'impulsions du codeur 60 : ce nombre p est appelé "pas" dans la suite de la description. Entre deux impulsions du codeur 24 de tambour, on peut compter un nombre d'impulsions p c'est-à-dire le nombre de pas. Si pour le parcours L le nombre total de pas, kp, était égal au nombre N, il n'y aurait aucun problème de synchronisme en fréquence et en phase. En fait il existe toujours un décalage dont l'expression est :

  • d = kp - N

k étant un nombre entier pouvant être égal à 4,5 ou 6 compte tenu des fluctuations possibles de vitesse et de longueur du banc ; d doit toujours être égal ou supérieur à O. Les calculs de d sont effectués par un microprocesseur 70 pendant la période d'un sixième de seconde précédant le départ de la lettre si l'on se tient aux hypothèses retenues dans l'exemple décrit. L'impulsion déclenchant le dépilage d'une lettre est décalée par rapport à l'impulsion du tambour en fonction de la valeur de d calculée. Dans ces conditions, la lettre dépilée se présente face à la case de réception dans une position optimale pour que le volet d'insertion conforme à l'invention joue parfaitement son rôle d'accompagnement de la lettre de telle sorte que celle-ci se trouve toujours sensiblement centrée par rapport à la case durant son passage face au chemin de convoyage.The distance followed by a letter between 2 TTAMB corresponds to a number of pulses from the encoder 60: this number p is called "step" in the following description. Between two pulses of the drum encoder 24, a number of pulses p can be counted, that is to say the number of steps. If for the path L the total number of steps, kp, were equal to the number N, there would be no problem of synchronism in frequency and in phase. In fact, there is always a lag whose expression is:
  • d = kp - N

k being an integer which may be equal to 4.5 or 6 taking into account possible fluctuations in speed and length of the bank; d must always be equal to or greater than O. The calculations of d are carried out by a microprocessor 70 during the period of one sixth of second preceding the start of the letter if we stick to the assumptions used in the example described. The pulse triggering the unstacking of a letter is offset from the drum pulse according to the calculated value of d. Under these conditions, the unstacked letter is facing the reception box in an optimal position so that the insertion flap according to the invention perfectly plays its role of accompanying the letter so that it is always substantially centered in relation to the box during its passage opposite the conveying path.

On a décrit un exemple de réalisation mettant en oeuvre un seul banc, équipé de son volet d'insertion coopérant avec un seul tambour, mais pour augmenter les cadences, on peut également mettre en parallèle au moins un second banc de défilement. Dans ce cas, chacun des tambours assure le remplissage d'une case sur deux du casier 20 de la machine de tri.We have described an embodiment using a single bench, equipped with its insertion flap cooperating with a single drum, but to increase the rates, it is also possible to parallel at least one second scroll bench. In this case, each of the drums ensures filling of one of the two compartments of the bin 20 of the sorting machine.

La présente invention trouve son application dans tout équipement de tri postal ou se trouve posé un problème d'interface entre un système d'entraînement de lettre par courroie et un système de cases de réception de lettres se présentant sous la forme d'un tambour tournant.The present invention finds its application in any postal sorting equipment or is posed an interface problem between a letter drive system by belt and a system of letter receiving boxes in the form of a rotating drum. .

Claims (9)

1. Banc de défilement (B) d'un équipement de tri de courrier comportant un dépileur (2) associé à un magasin d'alimentation (3), un système de convoyage (100) et un ensemble (7) de réceptacles en mouvement, caractérisé en ce qu'il comporte un système d'asservissement synchronisant le dépilage avec le mouvement des réceptacles (7) pour tenir compte des variations de vitesse de ces réceptacles (7) ainsi que des variations de vitesse du système de convoyage (100).1. Scrolling bench (B) of a mail sorting equipment comprising a destacker (2) associated with a food store (3), a conveyor system (100) and a set (7) of moving receptacles , characterized in that it comprises a servo system synchronizing the unstacking with the movement of the receptacles (7) to take account of the variations in speed of these receptacles (7) as well as variations in the speed of the conveyor system (100) . 2. Banc de défilement selon la revendication 1, caractérisé en ce que ce système d'asservissement met en oeuvre d'une part un premier codeur (24) synchrone de la vitesse des réceptacles fournissant des impulsions dites "impulsions TTAMB" et un second codeur (60) synchrone du système de convoyage (100) fournissant des impulsions dites "impulsions de banc".2. Scrolling bench according to claim 1, characterized in that this control system implements on the one hand a first encoder (24) synchronous with the speed of the receptacles supplying pulses called "TTAMB pulses" and a second encoder (60) synchronous with the conveyor system (100) providing pulses called "bench pulses". 3. Banc de défilement selon la revendication 2, caractérisé en ce que le parcours par une lettre (12) de la longueur total (Lt) du banc correspondant à un nombre (N) d'impulsions de banc, la distance parcourue par cette lettre (12) entre deux impulsions TTAMB correspondant à un nombre (p) d'impulsions de banc, dit "pas", le décalage de synchronisation entre le système de convoyage et les réceptacles (70) est obtenu par l'expression d = kp - N.3. Scrolling bench according to claim 2, characterized in that the travel by a letter (12) of the total length (L t ) of the bench corresponding to a number (N) of bench pulses, the distance traveled by this letter (12) between two TTAMB pulses corresponding to a number (p) of bench pulses, called "step", the synchronization offset between the conveyor system and the receptacles (70) is obtained by the expression d = kp - NOT. 4. Banc de défilement selon la revendication 3, caractérisé en ce que les impulsions de déclenchement du dépilage d'une lettres étant émises à la même fréquence que les impulsions du premier codeur, ces impulsions de déclenchement sont décalées par rapport à l'impulsion du premier codeur en fonction de la valeur de d.4. Scrolling bench according to claim 3, characterized in that the trigger pulses for unstacking a letter being emitted at the same frequency as the pulses of the first encoder, these trigger pulses are offset from the pulse of the first encoder according to the value of d. 5. Banc de défilement selon l'une quelconque des revendications 1 à 4, caractérisé en ce qu'il comporte un volet d'insertion disposé à l'interface du système de convoyage et de l'ensemble de réceptacles.5. Scroll bench according to any one of claims 1 to 4, characterized in that it comprises an insertion flap disposed at the interface of the conveying system and the set of receptacles. 6. Volet d'insertion (1) selon la revendication 5 destiné au guidage des lettres, durant leur insertion dans les case (8) d'un tambour tournant (7), caractérisé en ce que ce volet comporte un axe (45) assurant son pivotement dans le sens perpendiculaire à l'axe de rotation du tambour (7) selon un angle durant lequel il accompagne la lettre (12), augmentant ainsi l'intervalle de temps disponible pour l'insertion de celle-ci dans la case (8) correspondante, du tambour (7).6. Insertion shutter (1) according to claim 5 intended for guiding the letters, during their insertion in the boxes (8) of a rotating drum (7), characterized in that this shutter comprises an axis (45) ensuring its pivoting in the direction perpendicular to the axis of rotation of the drum (7) at an angle during which it accompanies the letter (12), thus increasing the time interval available for the insertion of the latter in the box ( 8) corresponding, of the drum (7). 7. Volet d'insertion selon la revendication 6, caractérisé en ce que dès que l'axe (45) du volet (1) a terminé sa course d'accompagnement, un moyen de rappel (48) assure son rappel à sa position initiale.7. Insertion shutter according to claim 6, characterized in that as soon as the axis (45) of the shutter (1) has completed its accompanying stroke, a return means (48) ensures its return to its initial position . 8. Volet d'insertion selon l'une des revendications 6 ou 7, caractérisé en ce que ce volet est constitué de deux flasques (30 et 31) délimitant une glissière (32) destinée à guider la lettre (12) durant sa trajectoire d'accompagnement.8. Insertion shutter according to one of claims 6 or 7, characterized in that this shutter consists of two flanges (30 and 31) defining a slide (32) intended to guide the letter (12) during its trajectory d support. 9. Volet d'insertion selon l'une des revendications 6 à 8, caractérisé en ce que la rotation de l'axe (45) selon l'angle et son retour à sa position initiale sont obtenus grâce à l'action d'une came dont l'entraînement est synchronisé mécaniquement avec l'entraînement du tambour.9. Insertion shutter according to one of claims 6 to 8, characterized in that the rotation of the axis (45) according to the angle and its return to its initial position are obtained by the action of a cam whose drive is mechanically synchronized with the drive of the drum.
EP83401603A 1982-08-13 1983-08-02 Passage device of a post sorting equipment comprising an insertion flap for guiding the letters Withdrawn EP0101370A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8214102A FR2531637A1 (en) 1982-08-13 1982-08-13 FLOOR BENCH OF A COURIER SORTING EQUIPMENT AND INSERTION FLAP FOR GUIDING LETTERS EQUIPPED WITH SUCH A BENCH
FR8214102 1982-08-13

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EP0101370A2 true EP0101370A2 (en) 1984-02-22
EP0101370A3 EP0101370A3 (en) 1984-03-21

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EP83401603A Withdrawn EP0101370A3 (en) 1982-08-13 1983-08-02 Passage device of a post sorting equipment comprising an insertion flap for guiding the letters

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US (1) US4542818A (en)
EP (1) EP0101370A3 (en)
JP (1) JPS5946178A (en)
FR (1) FR2531637A1 (en)

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WO1995017267A1 (en) * 1993-12-23 1995-06-29 Siemens Aktiengesellschaft Transfer device for piece-goods, especially for postal items
WO1996034703A1 (en) * 1995-05-05 1996-11-07 Siemens Aktiengesellschaft Transfer device for unit loads, especially postal items
WO1996039261A1 (en) * 1995-06-06 1996-12-12 Siemens Aktiengesellschaft Transfer device for piece goods, especially items of mail
WO1997010904A1 (en) * 1995-09-22 1997-03-27 Siemens Aktiengesellschaft Sorting device
EP0761321A3 (en) * 1995-09-04 1998-11-25 Grapha-Holding Ag Supplying device for mail items
WO2007022881A1 (en) * 2005-08-25 2007-03-01 Siemens Aktiengesellschaft Loading device for loading retaining containers with objects
WO2015145000A1 (en) * 2014-03-25 2015-10-01 Solystic Device for supplying flat items for a bucket conveyor

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2708488A1 (en) * 1993-08-03 1995-02-10 Thieriot Didier Device for inserting objects into a postal sorting machine
WO1995017267A1 (en) * 1993-12-23 1995-06-29 Siemens Aktiengesellschaft Transfer device for piece-goods, especially for postal items
US5782338A (en) * 1993-12-23 1998-07-21 Siemens Aktiengesellschaft Transfer device for mail and the like
WO1996034703A1 (en) * 1995-05-05 1996-11-07 Siemens Aktiengesellschaft Transfer device for unit loads, especially postal items
WO1996039261A1 (en) * 1995-06-06 1996-12-12 Siemens Aktiengesellschaft Transfer device for piece goods, especially items of mail
EP0761321A3 (en) * 1995-09-04 1998-11-25 Grapha-Holding Ag Supplying device for mail items
WO1997010904A1 (en) * 1995-09-22 1997-03-27 Siemens Aktiengesellschaft Sorting device
WO2007022881A1 (en) * 2005-08-25 2007-03-01 Siemens Aktiengesellschaft Loading device for loading retaining containers with objects
WO2015145000A1 (en) * 2014-03-25 2015-10-01 Solystic Device for supplying flat items for a bucket conveyor
US9868138B2 (en) 2014-03-25 2018-01-16 Solystic Device for supplying flat items for a bucket conveyor

Also Published As

Publication number Publication date
JPS5946178A (en) 1984-03-15
US4542818A (en) 1985-09-24
EP0101370A3 (en) 1984-03-21
FR2531637A1 (en) 1984-02-17
FR2531637B1 (en) 1985-01-18

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