EP1584588A1 - Conveyor device with twisted belt and pulley with floating spring member - Google Patents

Conveyor device with twisted belt and pulley with floating spring member Download PDF

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Publication number
EP1584588A1
EP1584588A1 EP05300233A EP05300233A EP1584588A1 EP 1584588 A1 EP1584588 A1 EP 1584588A1 EP 05300233 A EP05300233 A EP 05300233A EP 05300233 A EP05300233 A EP 05300233A EP 1584588 A1 EP1584588 A1 EP 1584588A1
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EP
European Patent Office
Prior art keywords
belt
conveyor
twisted
pulley
main
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Withdrawn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
EP05300233A
Other languages
German (de)
French (fr)
Inventor
Fabrice Eyraud
Raymond Chifflet
Jean Rieu
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.)
Solystic SAS
Original Assignee
Solystic SAS
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Filing date
Publication date
Application filed by Solystic SAS filed Critical Solystic SAS
Publication of EP1584588A1 publication Critical patent/EP1584588A1/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H31/00—Pile receivers
    • B65H31/04—Pile receivers with movable end support arranged to recede as pile accumulates
    • B65H31/06—Pile receivers with movable end support arranged to recede as pile accumulates the articles being piled on edge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/30—Orientation, displacement, position of the handled material
    • B65H2301/32—Orientation of handled material
    • B65H2301/321—Standing on edge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/20—Belts
    • B65H2404/26—Particular arrangement of belt, or belts
    • B65H2404/261—Arrangement of belts, or belt(s) / roller(s) facing each other for forming a transport nip
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/20—Belts
    • B65H2404/26—Particular arrangement of belt, or belts
    • B65H2404/261—Arrangement of belts, or belt(s) / roller(s) facing each other for forming a transport nip
    • B65H2404/2613—Means for changing the transport path, e.g. deforming, lengthening
    • 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 conveying device comprising a main conveyor by which mail items are conveyed by pinch between a conveyor belt and a main belt, and a secondary conveyor to which the mail items are conveyed, after switching, along a secondary belt, said belts main and secondary trains performing the main conveying and secondary conveying being constituted by a single belt Twisted twice.
  • Such a conveying device is known from patent document FR-2555974. It is used for the routing and stacking of postal items in the sorting outlets of a postal sorting machine.
  • a mail piece 1 ' is conveyed by means of a main conveyor 2' and is pointed by a switching flap 3 'towards a stacking conveyor 4 'of a stacker 5' sorting outlet of a postal sorting machine.
  • the main conveyor 2 ' consists of a conveyor belt 6' and a main belt 7 'which extends between two sorting outlets and which runs along the belt 6'. The mail piece is clamped between the two belts 6 'and 7' to be routed to a sorting outlet.
  • the conveyor belt 6 ' is driven in motion by at least one friction pulley P' tr. motorized.
  • the stacking conveyor 4 ' is constituted by a stacking belt 8' which extends in the bottom of the stacker 5 '.
  • the main belt 7 'and the stacking belt 8' are formed by one and the same double twisted endless belt which is generally designated in FIG. 1 by the reference numeral 9 '.
  • This twice twisted belt 9 ' circulates on a path generally shaped "8" to produce two movements of drive mail items 1', in the same direction, substantially parallel and whose speeds are equal.
  • the belt 9 ' is engaged in the example of FIG.
  • the object of the invention is to overcome this disadvantage.
  • the subject of the invention is a conveying device comprising a main conveyor through which mail items are conveyed by pinching between a conveyor belt and a main belt, and a secondary conveyor to which the mail items are forwarded, after switching, along a secondary belt, said main and secondary belts performing the conveying functions main and secondary conveyor being one and same double twisted belt, characterized in that said twisted belt Twice is engaged on a tension pulley which is a floating pulley.
  • the floating pulley has a rotation shaft whose two ends are connected respectively to two tensioners, for example spiral springs mounted in support tubes for control purposes lengthening belt.
  • the floating pulley according to the invention therefore has an axis of rotation floating in a three-dimensional space. With this arrangement, one obtains simple stabilization of the trajectory of the belt twisted twice in the vertical plane by self-centering with in addition a tensioning dynamic of the twisted belt twice that compensates for its lengthening in time.
  • the belt twisted two times follows an "8" shaped path with two loops and has two twisted belt segments superimposed on the intersection of the two loops, these two belt segments being in contact with each other along their length between two pulleys.
  • the twisted belt twice, the noise of friction in the conveying device.
  • FIG. 1 is a schematic representation of a device for conveying the prior art.
  • FIG. 2 is a schematic representation of the device conveying according to the invention.
  • FIG. 3 is a schematic representation in perspective of conveying device according to the invention shown in FIG.
  • FIG. 4 is a schematic representation of a floating pulley according to the invention.
  • Figure 5 schematically shows a postal sorting machine in which can be used a conveying device according to the invention.
  • FIGS. 2 and 3 therefore show a similar embodiment of a conveyor device D with twin twisted belt and tension pulley floating for a stacker of a postal sorting machine.
  • a mail item 1, in particular a letter or other flat postal item, moved by a main conveyor 2 of the conveying device D is switched by a switching flap 3 to a stacking conveyor 4 to be routed to an output stacker 5 of Sorting a postal sorting machine.
  • Turnout flap 3, more visible on the 3, is constituted by a fork-shaped finger 12 mounted rotatably on a sole 13 which has a guide channel of the foot of the article of mail.
  • the main conveyor 2 comprises a conveyor belt 6 driven by friction by a set of motorized pulleys P tr distributed along the sorting outlets of the sorting machine. At each sorting outlet, the belt 6 cooperates by clamping with a first rectilinear segment 7 (forming a main belt) of a double twisted belt 9 which is engaged around return pulleys P1 and P2 arranged in alignment along the 6. As shown in Figure 2, a switching flap 3 is interposed each time between two consecutive sorting outlets. The two belts 6 and 9 along the segment 7 have the same direction of travel.
  • the stacking conveyor 4 comprises a stacking belt (or secondary) constituted by a second segment 8 of the belt twisted two 9 which extends between two pulleys P4 and P5 on which is engaged the belt 9.
  • the stacking conveyor 4 further comprises a guide belt constituted by a segment 14 of another belt twisted twice 9 of another conveying device D adjacent, this other 9 belt being engaged around the pulleys P2 and P3 arranged in alignment with segment 8.
  • a mail item 1 passing through the stacking conveyor 4 is clamped between the stacking belt and the belt guidance to be routed in the S2 scrolling direction to the stacker 5 of the sorting outlet.
  • a twice twisted belt 9 in a conveying device D realizes so both the main conveying functions 2 and conveying Stacking 4.
  • the path of the twice twisted belt 9 in the shape of "8" is defined by the arrangement of a set of return pulleys P1, P2, P3, P4, P5, P6, and a motorized pulley P7.
  • the 8-shaped path of the belt 9 forms a first defined loop by the pulleys P1, P2, P3, P4 and a second loop which crosses the first loop and which is defined by the pulleys P4, P5, P6, Pf and Motorized P7.
  • Twisted Belt Twice Has Two V-Ribbed Belt Segments 10,11 which are superimposed on crossing the two loops of the "8".
  • These two parallel belt segments extend between the two pulleys of P4 and P7 and are in contact (face to face) with each other on their entire length between these two pulleys P4 and P7.
  • the operating noise is considerably reduced in the conveying device because there is no friction between the segments of the belt 9. More particularly, the path of the belt twisted twice 9 is: after going round the P3 pulley, it comes to rest against the pulley P7 from which it is twisted once to be in contact with pulley P4.
  • the belt 9 has a drive face in contact with the pulleys and a friction face in contact with mail items.
  • the training face is the face internal belt, that is to say the face located inside the path of the belt.
  • the friction face is the outer face of the belt, that is to say the face outside the path of the belt. As visible on Figures 2 and 3, the two twisted segments 10, 11 of the belt 9 are in contact against each other on the side of the friction face of the belt.
  • FIGS. 2 and 3 show the tension pulley Pf of FIG. twice twisted belt 9 which is a floating pulley on which is engaged the belt 9.
  • FIG 4 shows in more detail the pulley Pf which is normally a crazy pulley. It comprises a wheel 15 mounted freely rotating on a tree 16 whose ends are mounted floating in a space to three dimensions.
  • the pulley Pf is kept floating by the action of forces of substantially opposite tension exerted on the one hand by the belt 9 on the wheel 15 and secondly by two tensioners 17 which are respectively fixed at both ends of the shaft 16 on either side of the wheel 15.
  • These two turnbuckles 17 are here spiral springs each mounted in a tube support and hung in fork to a base 18.
  • the pulley Pf with the turnbuckles 17 constitutes a dynamic belt tension system capable of compensate for the elongation of the belt 9 in time.
  • FIG. 5 shows a postal sorting machine M comprising a plurality of sorting outlets 19 stacker 5 can be equipped advantageously each of a conveying device D according to the invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
  • Sorting Of Articles (AREA)

Abstract

The device has a main conveyor (2) by which mail articles e.g. letters, are transported between a conveyor belt (6) and a main belt (7). The belt (7) and a secondary belt (8) are constituted by a twisted belt (9) that is engaged on a floating pulley. The floating pulley has a floating rotational axis in three dimensional space. The belts (7, 8) are in contact with each other on their entire length between deflecting pulleys. The articles are transported along the secondary belt (8), towards a secondary conveyor (4). An independent claim is also included for a postal sorting machine including a conveying device.

Description

L'invention concerne un dispositif de convoyage comprenant un convoyeur principal par lequel des articles de courrier sont acheminés par pincement entre une courroie transporteuse et une courroie principale, et un convoyeur secondaire vers lequel les articles de courrier sont acheminés, après aiguillage, le long d'une courroie secondaire, lesdites courroies principale et secondaire réalisant les fonctions de convoyage principal et de convoyage secondaire étant constituées par une seule et même courroie vrillée deux fois.The invention relates to a conveying device comprising a main conveyor by which mail items are conveyed by pinch between a conveyor belt and a main belt, and a secondary conveyor to which the mail items are conveyed, after switching, along a secondary belt, said belts main and secondary trains performing the main conveying and secondary conveying being constituted by a single belt Twisted twice.

Un tel dispositif de convoyage est connu du document de brevet FR-2555974. Il est utilisé pour l'aiguillage et l'empilage d'envois postaux dans les sorties de tri d'une machine de tri postal. Dans ce dispositif de convoyage connu représenté très schématiquement sur la figure 1, un article de courrier 1' est transporté par l'intermédiaire d'un convoyeur principal 2' et est aiguillé par un volet d'aiguillage 3' vers un convoyeur d'empilage 4' d'un empileur 5' de sortie de tri d'une machine de tri postal. Le convoyeur principal 2' est constitué par une courroie transporteuse 6' et par une courroie principale 7' qui s'étend entre deux sorties de tri et qui longe la courroie 6'. L'article de courrier est pincé entre les deux courroies 6' et 7' pour être acheminé vers une sortie de tri. La courroie transporteuse 6' est entraínée en mouvement par au moins une poulie de friction P'tr. motorisée. Le convoyeur d'empilage 4' est constitué par une courroie d'empilage 8' qui s'étend dans le fond de l'empileur 5'. Comme visible sur la figure 1, la courroie principale 7' et la courroie d'empilage 8' sont formées par une seule et même courroie sans fin vrillée deux fois qui est désignée de façon générale sur la figure 1 par la référence 9'. Cette courroie vrillée deux fois 9' circule sur un trajet en forme générale de "8" pour produire deux mouvements d'entraínement des articles de courrier 1', de même sens, sensiblement parallèles et dont les vitesses sont égales. La courroie 9' est engagée dans l'exemple de la figure 1 sur quatre poulies principales P' qui définissent le trajet en forme de "8" et présente des segments rectilignes 10',11' sensiblement superposés et qui se croisent au niveau de l'intersection des deux boucles du trajet en forme de "8". Les poulies P' peuvent être des poulies folles tandis que la seule poulie motorisée entraíne en mouvement la courroie transporteuse 6' mais aussi la courroie vrillée deux fois 9' qui est en friction avec la courroie 6'. Cet agencement garantit de façon simple une vitesse d'entraínement identique des deux courroies 6' et 9'.Such a conveying device is known from patent document FR-2555974. It is used for the routing and stacking of postal items in the sorting outlets of a postal sorting machine. In this known conveying device shown very schematically in FIG. 1, a mail piece 1 'is conveyed by means of a main conveyor 2' and is pointed by a switching flap 3 'towards a stacking conveyor 4 'of a stacker 5' sorting outlet of a postal sorting machine. The main conveyor 2 'consists of a conveyor belt 6' and a main belt 7 'which extends between two sorting outlets and which runs along the belt 6'. The mail piece is clamped between the two belts 6 'and 7' to be routed to a sorting outlet. The conveyor belt 6 'is driven in motion by at least one friction pulley P' tr. motorized. The stacking conveyor 4 'is constituted by a stacking belt 8' which extends in the bottom of the stacker 5 '. As shown in FIG. 1, the main belt 7 'and the stacking belt 8' are formed by one and the same double twisted endless belt which is generally designated in FIG. 1 by the reference numeral 9 '. This twice twisted belt 9 'circulates on a path generally shaped "8" to produce two movements of drive mail items 1', in the same direction, substantially parallel and whose speeds are equal. The belt 9 'is engaged in the example of FIG. 1 on four main pulleys P' which define the path in the form of "8" and has rectilinear segments 10 ', 11' substantially superimposed and which intersect at the level of the intersection of the two loops of the "8" shaped path. The pulleys P 'can be idle pulleys whereas the single motorized pulley causes the conveyor belt 6' but also the double twisted belt 9 'which is in friction with the belt 6' to move. This arrangement guarantees in a simple way an identical drive speed of the two belts 6 'and 9'.

Dans un tel dispositif de convoyage, on a constaté que la trajectoire de la courroie 9' pouvait présenter des variations dans le plan vertical nuisant au bon fonctionnement des empileurs de la machine de tri. Ces déplacements intempestifs de la courroie 9' sont jusqu'à présent éliminés par un recentrage régulier et manuel de la courroie 9' sur les poulies P' ce qui induit des coûts de maintenance non négligeables.In such a conveying device, it has been found that the trajectory of the belt 9 'could show variations in the vertical plane smooth operation of the stackers of the sorting machine. These displacements unintentional belt 9 'are so far eliminated by a regular and manual refocusing of the belt 9 'on the pulleys P' which induces significant maintenance costs.

Le but de l'invention est de palier cet inconvénient.The object of the invention is to overcome this disadvantage.

A cet effet, l'invention a pour objet un dispositif de convoyage comprenant un convoyeur principal par lequel des articles de courrier sont acheminés par pincement entre une courroie transporteuse et une courroie principale, et un convoyeur secondaire vers lequel les articles de courrier sont acheminés, après aiguillage, le long d'une courroie secondaire, lesdites courroies principale et secondaire réalisant les fonctions de convoyage principal et de convoyage secondaire étant constituées par une seule et même courroie vrillée deux fois, caractérisé en ce que ladite courroie vrillée deux fois est engagée sur une poulie de tension qui est une poulie flottante.For this purpose, the subject of the invention is a conveying device comprising a main conveyor through which mail items are conveyed by pinching between a conveyor belt and a main belt, and a secondary conveyor to which the mail items are forwarded, after switching, along a secondary belt, said main and secondary belts performing the conveying functions main and secondary conveyor being one and same double twisted belt, characterized in that said twisted belt Twice is engaged on a tension pulley which is a floating pulley.

Selon un mode de réalisation particulier du dispositif de convoyage selon l'invention, la poulie flottante a un arbre de rotation dont les deux extrémités flottantes sont reliées respectivement à deux tendeurs, par exemple des ressorts spiralés montés dans des tubes support à des fins de contrôle d'allongement de courroie.According to a particular embodiment of the conveying device according to the invention, the floating pulley has a rotation shaft whose two ends are connected respectively to two tensioners, for example spiral springs mounted in support tubes for control purposes lengthening belt.

La poulie flottante selon l'invention a donc un axe de rotation flottant dans un espace à trois dimensions. Avec cet agencement, on obtient de façon simple une stabilisation de la trajectoire de la courroie vrillée deux fois dans le plan vertical par auto-centrage avec en plus une mise en tension dynamique de la courroie vrillée deux fois qui compense son allongement dans le temps.The floating pulley according to the invention therefore has an axis of rotation floating in a three-dimensional space. With this arrangement, one obtains simple stabilization of the trajectory of the belt twisted twice in the vertical plane by self-centering with in addition a tensioning dynamic of the twisted belt twice that compensates for its lengthening in time.

Dans le dispositif de convoyage selon l'invention, la courroie vrillée deux fois suit un trajet en forme de « 8 » à deux boucles et comporte deux segments de courroie vrillés qui se superposent au croisement des deux boucles, ces deux segments de courroie étant en contact l'un avec l'autre sur toute leur longueur entre deux poulies de renvoi. Avec cet agencement de la courroie vrillée deux fois, on réduit considérablement les bruits de frottement dans le dispositif de convoyage. In the conveying device according to the invention, the belt twisted two times follows an "8" shaped path with two loops and has two twisted belt segments superimposed on the intersection of the two loops, these two belt segments being in contact with each other along their length between two pulleys. With this arrangement the twisted belt twice, the noise of friction in the conveying device.

L'invention sera mieux comprise à la lecture de la description qui suit d'un exemple de réalisation illustré par les figures.The invention will be better understood on reading the following description of a exemplary embodiment illustrated by the figures.

La figure 1 est une représentation schématique d'un dispositif de convoyage de l'art antérieur.FIG. 1 is a schematic representation of a device for conveying the prior art.

La figure 2 est une représentation schématique du dispositif de convoyage selon l'invention.FIG. 2 is a schematic representation of the device conveying according to the invention.

La figure 3 est une représentation schématique en perspective du dispositif de convoyage selon l'invention montré sur la figure 2.FIG. 3 is a schematic representation in perspective of conveying device according to the invention shown in FIG.

La figure 4 est une représentation schématique d'une poulie flottante selon l'invention.FIG. 4 is a schematic representation of a floating pulley according to the invention.

La figure 5 montre schématiquement une machine de tri postal dans laquelle peut être utilisé un dispositif de convoyage selon l'invention.Figure 5 schematically shows a postal sorting machine in which can be used a conveying device according to the invention.

Les figures 2 et 3 montrent donc un même exemple de réalisation d'un dispositif de convoyage D à courroie vrillée deux fois et à poulie de tension flottante pour un empileur d'une machine de tri postal.FIGS. 2 and 3 therefore show a similar embodiment of a conveyor device D with twin twisted belt and tension pulley floating for a stacker of a postal sorting machine.

Comme visible sur la figure 2, un article de courrier 1, en particulier une lettre ou tout autre envoi postal plat, déplacé par un convoyeur principal 2 du dispositif de convoyage D est aiguillé par un volet d'aiguillage 3 vers un convoyeur d'empilage 4 afin d'être acheminé vers un empileur 5 de sortie de tri d'une machine de tri postal. Le volet d'aiguillage 3, plus visible sur la figure 3, est constitué par un doigt 12 en forme de fourche monté rotatif sur une sole 13 qui présente un canal de guidage du pied de l'article de courrier.As shown in FIG. 2, a mail item 1, in particular a letter or other flat postal item, moved by a main conveyor 2 of the conveying device D is switched by a switching flap 3 to a stacking conveyor 4 to be routed to an output stacker 5 of Sorting a postal sorting machine. Turnout flap 3, more visible on the 3, is constituted by a fork-shaped finger 12 mounted rotatably on a sole 13 which has a guide channel of the foot of the article of mail.

Le convoyeur principal 2 comprend une courroie transporteuse 6 entraínée par friction par un jeu de poulies motorisées Ptr réparties le long des sorties de tri de la machine de tri. A chaque sortie de tri, la courroie 6 coopère par pincement avec un premier segment rectiligne 7 (formant une courroie principale) d'une courroie vrillée deux fois 9 qui est engagée autour de poulies de renvoi P1 et P2 disposées en alignement le long de la courroie 6. Comme visible sur la figure 2, un volet d'aiguillage 3 est interposé à chaque fois entre deux sorties de tri consécutives. Les deux courroies 6 et 9 ont le long du segment 7 un même sens de défilement.The main conveyor 2 comprises a conveyor belt 6 driven by friction by a set of motorized pulleys P tr distributed along the sorting outlets of the sorting machine. At each sorting outlet, the belt 6 cooperates by clamping with a first rectilinear segment 7 (forming a main belt) of a double twisted belt 9 which is engaged around return pulleys P1 and P2 arranged in alignment along the 6. As shown in Figure 2, a switching flap 3 is interposed each time between two consecutive sorting outlets. The two belts 6 and 9 along the segment 7 have the same direction of travel.

Le convoyeur d'empilage 4 comprend une courroie d'empilage (ou secondaire) constituée par un second segment 8 de la courroie vrillée deux fois 9 qui s'étend entre deux poulies de renvoi P4 et P5 sur lesquelles est engagée la courroie 9. Le convoyeur d'empilage 4 comprend encore une courroie de guidage constituée par un segment 14 d'une autre courroie vrillée deux fois 9 d'un autre dispositif de convoyage D adjacent, cette autre courroie 9 étant engagée autour des poulies P2 et P3 disposées en alignement avec le segment 8. Un article de courrier 1 passant dans le convoyeur d'empilage 4 est pincé entre la courroie d'empilage et la courroie de guidage pour être acheminé suivant le sens de défilement S2 vers l'empileur 5 de la sortie de tri.The stacking conveyor 4 comprises a stacking belt (or secondary) constituted by a second segment 8 of the belt twisted two 9 which extends between two pulleys P4 and P5 on which is engaged the belt 9. The stacking conveyor 4 further comprises a guide belt constituted by a segment 14 of another belt twisted twice 9 of another conveying device D adjacent, this other 9 belt being engaged around the pulleys P2 and P3 arranged in alignment with segment 8. A mail item 1 passing through the stacking conveyor 4 is clamped between the stacking belt and the belt guidance to be routed in the S2 scrolling direction to the stacker 5 of the sorting outlet.

Une courroie vrillée deux fois 9 dans un dispositif de convoyage D réalise donc à la fois les fonctions de convoyage principal 2 et de convoyage d'empilage 4.A twice twisted belt 9 in a conveying device D realizes so both the main conveying functions 2 and conveying Stacking 4.

Le trajet de la courroie vrillée deux fois 9 en forme de « 8 » est défini par la disposition d'un ensemble de poulies de renvoi P1,P2,P3,P4,P5,P6,et d'une poulie de renvoi motorisée P7. Comme visible sur les figures 2 et 3, le trajet en forme de « 8 » de la courroie 9 forme une première boucle définie par les poulies de renvoi P1,P2,P3,P4 et une seconde boucle qui croise la première boucle et qui est définie par les poulies de renvoi P4,P5,P6, Pf et P7 motorisée.The path of the twice twisted belt 9 in the shape of "8" is defined by the arrangement of a set of return pulleys P1, P2, P3, P4, P5, P6, and a motorized pulley P7. As shown in FIGS. 2 and 3, the 8-shaped path of the belt 9 forms a first defined loop by the pulleys P1, P2, P3, P4 and a second loop which crosses the first loop and which is defined by the pulleys P4, P5, P6, Pf and Motorized P7.

La courroie vrillée deux fois comporte deux segments de courroie vrillée 10,11 qui se superposent au croisement des deux boucles du « 8 ». Ces deux segments de courroie parallèles s'étendent entre les deux poulies de renvoi P4 et P7 et sont en contact (face contre face) l'un avec l'autre sur toute leur longueur entre ces deux poulies de renvoi P4 et P7. Avec cet agencement, on réduit considérablement les bruit de fonctionnement dans le dispositif de convoyage car il n'y a pas de frottement entre les segments de la courroie 9. Plus particulièrement, le trajet de la courroie vrillée deux fois 9 est le suivant : après avoir contourné la poulie P3, elle vient reposer contre la poulie P7 à partir de laquelle elle est vrillée une fois jusqu'à être en contact avec la poulie P4. Après avoir contourné la poulie Pf, elle vient reposer de nouveau contre la poulie P7 et est une nouvelle fois vrillée jusqu'à reposer contre la poulie P4, à partir de laquelle elle retrouve une configuration non vrillée. La courroie 9 est donc vrillée une première fois entre les poulies P7 et P4, puis une seconde fois de nouveau entre les poulies P7 et P4, ce qui correspond au croisement des deux boucles du "8" formé par la courroie 9.Twisted Belt Twice Has Two V-Ribbed Belt Segments 10,11 which are superimposed on crossing the two loops of the "8". These two parallel belt segments extend between the two pulleys of P4 and P7 and are in contact (face to face) with each other on their entire length between these two pulleys P4 and P7. With this arrangement, the operating noise is considerably reduced in the conveying device because there is no friction between the segments of the belt 9. More particularly, the path of the belt twisted twice 9 is: after going round the P3 pulley, it comes to rest against the pulley P7 from which it is twisted once to be in contact with pulley P4. After circling Pf pulley, she comes rest against the P7 pulley again and is twisted again until it rests against the P4 pulley, from which it finds a non-twisted configuration. The belt 9 is twisted a first time between pulleys P7 and P4, then a second time again between pulleys P7 and P4, which corresponds to the crossing of the two loops of the "8" formed by the belt 9.

De façon encore plus précise, on considère que la courroie 9 possède une face d'entraínement en contact avec les poulies et une face de friction en contact avec les articles de courrier. La face d'entraínement est la face interne de la courroie, c'est-à-dire la face située à l'intérieur du trajet de la courroie. La face de friction est la face externe de la courroie, c'est-à-dire la face située à l'extérieur du trajet de la courroie. Comme visible sur les figures 2 et 3, les deux segments vrillés 10, 11 de la courroie 9 sont en contact l'un contre l'autre du côté de la face de friction de la courroie.Even more precisely, it is considered that the belt 9 has a drive face in contact with the pulleys and a friction face in contact with mail items. The training face is the face internal belt, that is to say the face located inside the path of the belt. The friction face is the outer face of the belt, that is to say the face outside the path of the belt. As visible on Figures 2 and 3, the two twisted segments 10, 11 of the belt 9 are in contact against each other on the side of the friction face of the belt.

On a représenté sur les figures 2 et 3, la poulie de tension Pf de la courroie vrillée deux fois 9 qui est une poulie flottante sur laquelle est engagée la courroie 9.FIGS. 2 and 3 show the tension pulley Pf of FIG. twice twisted belt 9 which is a floating pulley on which is engaged the belt 9.

La figure 4 montre plus en détail la poulie Pf qui est normalement une poulie folle. Elle comprend une roue 15 montée librement rotative sur un arbre 16 dont les extrémités sont montées flottantes dans un espace à trois dimensions. La poulie Pf est maintenue flottante par l'action de forces de tension sensiblement contraires exercées d'une part par la courroie 9 sur la roue 15 et d'autre part par deux tendeurs 17 qui sont fixés respectivement aux deux extrémités de l'arbre 16 de part et d'autre de la roue 15. Ces deux tendeurs 17 sont ici des ressorts spiralés montés chacun dans un tube support et accrochés en fourche à un socle 18. La poulie Pf avec les tendeurs 17 constitue un système de tension de courroie dynamique apte à compenser l'allongement de la courroie 9 dans le temps.Figure 4 shows in more detail the pulley Pf which is normally a crazy pulley. It comprises a wheel 15 mounted freely rotating on a tree 16 whose ends are mounted floating in a space to three dimensions. The pulley Pf is kept floating by the action of forces of substantially opposite tension exerted on the one hand by the belt 9 on the wheel 15 and secondly by two tensioners 17 which are respectively fixed at both ends of the shaft 16 on either side of the wheel 15. These two turnbuckles 17 are here spiral springs each mounted in a tube support and hung in fork to a base 18. The pulley Pf with the turnbuckles 17 constitutes a dynamic belt tension system capable of compensate for the elongation of the belt 9 in time.

Sur la figure 5, on a représenté une machine de tri postal M comprenant une pluralité de sorties de tri 19 à empileur 5 pouvant être équipées avantageusement chacune d'un dispositif de convoyage D selon l'invention.FIG. 5 shows a postal sorting machine M comprising a plurality of sorting outlets 19 stacker 5 can be equipped advantageously each of a conveying device D according to the invention.

Claims (5)

Dispositif de convoyage (D) comprenant un convoyeur principal (2) par lequel des articles de courrier sont acheminés par pincement entre une courroie transporteuse (6) et une courroie principale (7), et un convoyeur secondaire (4) vers lequel les articles de courrier sont acheminés, après aiguillage, le long d'une courroie secondaire (8), lesdites courroies principale et secondaire réalisant les fonctions de convoyage principal et de convoyage secondaire étant constituées par une seule et même courroie (9) vrillée deux fois, caractérisé en ce que ladite courroie (9) vrillée deux fois est engagée sur une poulie de tension qui est une poulie flottante (Pf).Conveyor device (D) comprising a main conveyor (2) through which mailpieces are pinched between a conveyor belt (6) and a main belt (7), and a secondary conveyor (4) to which the mail are routed, after switching, along a secondary belt (8), said main and secondary belts performing the main conveying and secondary conveying functions being constituted by a single belt (9) twisted twice, characterized in that said belt (9) twisted twice is engaged on a tension pulley which is a floating pulley (Pf). Dispositif de convoyage selon la revendication 1, dans lequel la poulie flottante (Pf) a un arbre (16) de rotation dont les deux extrémités flottantes sont reliées respectivement à deux tendeurs.Conveying device according to claim 1, wherein the pulley floating (PF) has a shaft (16) of rotation whose two floating ends are respectively connected to two tensioners. Dispositif selon la revendication 2, dans lequel les tendeurs sont des ressorts spiralés montés chacun dans un tube support.Device according to claim 2, in which the tensioners are spiral springs each mounted in a support tube. Dispositif selon l'une des revendications précédentes, dans lequel la courroie vrillée deux fois suit un trajet en forme de « 8 » à deux boucles et comporte deux segments de courroie (10,11) vrillée qui se superposent au croisement des deux boucles, ces deux segments de courroie étant en contact l'un avec l'autre sur toute leur longueur entre deux poulies de renvoi (P4,P7).Device according to one of the preceding claims, in which the Twisted strap twice follows an "8" shaped pattern with two loops and has two twisted belt segments (10, 11) which are superimposed on the crossing of the two loops, these two belt segments being in contact with each other along their entire length between two return pulleys (P4, P7). Machine de tri postal (M) pour trier des articles de courrier (1) comportant une pluralité de sorties de tri (19) avec un empileur (5) à chaque sortie de tri, caractérisée en ce qu'elle comprend à chaque sortie de tri un dispositif de convoyage (D) selon l'une des revendications précédentes.Postal sorting machine (M) for sorting mail items (1) comprising a plurality of sorting outlets (19) with a stacker (5) at each sorting outlet, characterized in that it comprises at each sorting outlet a conveying device (D) according to one of the preceding claims.
EP05300233A 2004-04-07 2005-03-31 Conveyor device with twisted belt and pulley with floating spring member Withdrawn EP1584588A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0450703A FR2868760B1 (en) 2004-04-07 2004-04-07 DEVICE FOR CONVEYING A V-BELT TWICE AND A PULLEY OF FLOATING VOLTAGE
FR0450703 2004-04-07

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US7441770B2 (en) 2008-10-28
FR2868760A1 (en) 2005-10-14
US20050225027A1 (en) 2005-10-13
FR2868760B1 (en) 2006-05-26

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