EP0115237A1 - Device for stacking flat objects - Google Patents

Device for stacking flat objects Download PDF

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Publication number
EP0115237A1
EP0115237A1 EP83402528A EP83402528A EP0115237A1 EP 0115237 A1 EP0115237 A1 EP 0115237A1 EP 83402528 A EP83402528 A EP 83402528A EP 83402528 A EP83402528 A EP 83402528A EP 0115237 A1 EP0115237 A1 EP 0115237A1
Authority
EP
European Patent Office
Prior art keywords
objects
drum
stacked
suction
receptacle
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.)
Granted
Application number
EP83402528A
Other languages
German (de)
French (fr)
Other versions
EP0115237B1 (en
Inventor
Michel Divoux
Bernard Constant
Marcel Ranchon
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 EP0115237A1 publication Critical patent/EP0115237A1/en
Application granted granted Critical
Publication of EP0115237B1 publication Critical patent/EP0115237B1/en
Expired 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
    • B65H31/30—Arrangements for removing completed piles
    • B65H31/3072—Arrangements for removing completed piles by moving a surface supporting the pile of articles on edge, e.g. by using belts or carriages
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/24—Delivering or advancing articles from machines; Advancing articles to or into piles by air blast or suction apparatus
    • B65H29/241—Suction devices
    • B65H29/243—Suction rollers
    • 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
    • B65H2301/40—Type of handling process
    • B65H2301/42—Piling, depiling, handling piles
    • B65H2301/422—Handling piles, sets or stacks of articles
    • B65H2301/4226—Delivering, advancing piles
    • B65H2301/42265—Delivering, advancing piles by moving the surface supporting the pile of articles on edge, e.g. conveyor or carriage
    • 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 device for stacking any flat objects and more particularly flat objects such as postal envelopes. It relates more particularly to a stacking device which stores in horizontal stacks flat objects conveyed in a unitary and vertical fashion by a belt conveyor for example.
  • the subject of the present invention is a device for stacking flat objects which remedies these defects by ensuring a permanent maintenance of these objects throughout the stacking operation.
  • the invention relates to a device for stacking flat objects approached on their edge by a conveyor, this device comprising a drum rotating on itself permanently around a fixed and hollow cylindrical body, substantially orthogonal to the direction of arrival. objects and whose generatrices are substantially parallel to the surface of these objects, said drum being provided over its entire periphery with a plurality of regularly distributed openings to allow the passage of air between its outer and inner faces, said body being provided with a suction circuit, one of which end opens onto one end of said body in order to cooperate successively with said openings during their passage in front of this orifice and thus ensure the taking in by suction of the approached objects and their conduct towards a receptacle where they are stacked, characterized in that it comprises mobile means holding objects on edge so that the outer face of the drum is permanently facing the stack of objects stacked in the receptacle, means for inserting said objects arranged to direct each object between said stack and said outer face, means suction control inserted in said circuit, and control means so that the suction is limited in time
  • FIG. 1 shows, top view, a horizontal section of the stacking device of the invention.
  • On this flat objects 1 are approached on edge by a belt conveyor 2.
  • a drum 3 rotating on itself in the direction of the arrow FI is mounted coaxially on a cylindrical body 4 fixed and having a hollow recess 5.
  • the axis of rotation of this drum is orthogonal to the direction of arrival of the objects 1 according to arrow F2 and is substantially parallel to the surface of these flat objects.
  • the drum 3 has a plurality of openings 6 regularly distributed around its periphery. These openings 6 establish a communication for the passage of air between the outer 7 and inner 8 faces of the drum 3. -
  • the recess 5 of the hollow body 4 has an orifice 9 opening onto the surface of this body 4.
  • this orifice 9 has an elongated shape and is collinear with the generatrix of the cylindrical body 4 substantially closest to a receptacle 10.
  • This receptacle 10 comprises a jogging edge 11 and transport means comprising a set of belts 12 and 13 and a guide plate 14. The belts 12, 13 and the guide plate 14 move during the operation stacking in the direction of arrows F3.
  • the recess 5 of the body 4 is permanently connected to a source of suction that is not shown. It has a section substantially in the form of a number 8. It is thus divided into two parts of circular section: the parts 15 and 16 connected together by a channel 17.
  • the orifice 9 is located in the extension of these parts 15 and 16 emerging at the periphery of the body 4.
  • the circular cylindrical part 16 serves as a housing for an elongated plug 18. This bushel acts as a valve. It is shown here in an open position. It allows the passage of air from the outside through the openings 6 in the direction of the suction source. The openings 6 pass in front of the orifice 9.
  • a pedal 20, articulated on an axis 21 parallel to the axis of the drum, comprises a pad 22 flush with the package 23 of flat objects 1 stacked in the receptacle 10.
  • a handle 24 of the pedal 20, located on the same side of the pad 22 relative to the axis 21, comes to request a detector 25.
  • This pedal 20 is held in the equilibrium position by a return spring 26.
  • the detector 25 can be of an electromechanical type.
  • the electrical signals produced by the detectors 25, 27 and 28 are directed on a control circuit 29, for example of an electronic type. In .
  • control circuit 29 controls the commissioning of motors of a set of motors 30. These motors, not shown, in particular control the rotation of the plug 18 as well as the advancement of the means of transport of the receptacle 10.
  • the conveyor 2 is arranged on the side of the drum 3. Its outlet is oriented in an oblique direction relative to the surface of the objects already stacked in the receptacle. He directs the object 1 to be stacked to insert it between the package of objects 23 and the drum 3. On leaving the conveyor 2 the object 1 obscures the photoelectric cell of the detector 27 and this detector 27 sends a pulse to the circuit pilot 29. After a delay corresponding to the time necessary for the front edge of the object 1 to be inserted between the package 23 and the drum 3, the pilot circuit 29 sends an order to the tilting motors of the plug 18 This plug 18 then turns in the direction of arrow F5, from a closed position to the open position shown in FIG. 1. Under these conditions, the suction source connected to the recess 5 sucks the rear face of the front front of the flat object to be stacked. This face is said to be posterior with respect to the direction of advance it will have in the receptacle 10.
  • the orifice 9 has a development on the periphery of the body 4 limited on the order of two to three times the width of the step distribution of the openings 6 on the drum 3. As soon as the openings 6 of the drum 3 having participated in the aspiration of the object to be stacked have exceeded the limit of the orifice 9 they are no longer in connection with the source of aspiration. The front edge of the object 1 which was then pressed into a rolling contact on these active openings of the drum comes off naturally.
  • the drum continues its action until the front edge of the object to be stacked abuts on the jogging edge 11.
  • the duration of this elementary action is limited by a time delay taking into account the speed of rotation of the drum 3 and of the distance separating the jogging edge 11 and the diameter of this drum parallel to this jogging edge. This time delay is a function of the time taken by the front edge of the object. stack to cross the distance separating the orifice 9 from the jogging edge 11.
  • control circuit sends an order, contrary to the previous one, to the motor actuating the plug 18 so as to interrupt the suction.
  • the adjustment of the duration of the suction action makes it possible to obtain a uniform jogging of all the objects to be stacked.
  • the stacking action exerted by the drum must be short.
  • the invention did it provide, to have the plug 18 directly downstream of the inner face 8 of the drum 3. Under these conditions , the rise time of the suction is reduced to the duration of the evacuation of the interior volume of the plug 18. This volume being small this action is therefore rapid. Furthermore, when the valve is closed, the interruption of the suction is likewise very rapid. It follows from this feature that the setting of the suction time is precise.
  • the pedal 20 and the detector 25 can be eliminated, this assembly being replaced by an additional sequential action produced by the control circuit 29 and initialized by the pulse of the detector 27
  • This sequential action then has the effect of advance the means of transport one notch whose amplitude corresponds to the thickness of the objects to be stacked.
  • Another feature of the invention lies in the fact that the pack of objects 23 is stacked in a receptacle 10 extending substantially horizontally.
  • the vertical maintenance of these objects 1 in the horizontal stack on the side of the stacking members is essentially exerted by the generatrices of the drum in contact with this package.
  • the suction source no longer being connected to the openings 6, the outer face 7 of this drum slides without friction on the stacked objects 1. It realizes their vertical maintenance.
  • this face 7 is preferably smooth.
  • FIG 2 there is a section of the drum 3 and the body 4 of the stacker in a plane perpendicular to the faces of the stacked objects. It is noted that the axis XX 'of rotation of the drum is parallel to the axis YY' of rotation of the plug 18 in its housing 16. The plug 18 thus rotates on itself alternately according to the commands of the control circuit 29 in the direction of the double arrow F5.
  • the openings 6 are slots made along generatrices of the drum around its entire periphery.
  • the openings 6 made in the drum are holes.
  • holes can be distributed over the entire height of the drum in a plurality of alignments, parallel to a certain number of particular generatrices of the drum, these particular generatrices being regularly distributed at a given pitch all around the drum.
  • the holes will be distributed over a plurality of helical alignments offset from one another at a given pitch over the entire periphery of this drum.
  • FIG. 2 finally shows the belt 13 of the means of transport of the receptacle 10. This belt 13 thus serves as a horizontal support for the stacked packages 23.
  • FIG. 3 shows in section an accessory means for holding the invention.
  • This accessory means is a cam 31, it is also visible in FIG. 1 at the outlet of the conveyor 2.
  • This cam 31 comprises two fingers 32 in the form of a comma, secured to a shaft 33 which can rotate around an axis ZZ ' parallel to the axis of the drum. These two fingers are spaced vertically to press in two places on the rear side of the stacked objects. The rotation takes place in the direction of arrow F6 ( Figure 1).
  • the shaft 33 is driven by a motor, not shown, also controlled by the piloting circuit 29.
  • the operation of this cam is as follows: when the front edge of an object obscures the photodetector 28, this photodetector 28 emits a pulse electric in the direction of circuit 29.
  • This circuit actuates the motor of cam 31 so that it performs a revolution on itself.
  • the speed and the instant of passage of this cam 31 are calculated so that its end disappears in front of the front front of the stacking object which arrives, and so that in a continuous rotating movement it comes to press the rear front of the object just stacked on package 23.
  • This cam 31 thus has two functions.
  • a first function it allows the front edge of a newly approached object to come safely between the drum 3 and the package 23 near the orifice 9. Indeed, depending on the nature of the objects and their conformation, the rear edges of stacked objects can spread out in a fan shape in the stack and thus hinder the insertion of a new object.
  • the cam 31 is only necessary when the output of the conveyor 2 is slightly inclined relative to normal to the jogging edge II.
  • a second function consists in helping to maintain the pack of objects 23 in the receptacle 10. On the figure 1 the cam 31 is shown in the working position, this position is not its rest position. The rest position is such that the orientation of the cam is substantially inclined relative to normal to the faces of the objects of the package 23.
  • the distance separating the end of the conveyor 2, being substantially at the height of the detector 27, from the orifice 9 is less than the length of the objects to be stacked. This length being measured perpendicular to the jogging edge 11. The difference between these two lengths is less than the distance separating the orifice 9 from the jogging edge 11. This allows the cam 31 to push back the rear edges of the objects to be stacked without them catching on the outlet of the conveyor 2 and they cannot thus cause jams.
  • the device for stacking flat objects according to the invention has been produced. After an adjustment phase concerning, in particular, the timing settings, it was found that the postal envelopes were stacked in which jamming incidents did not appear and in which the jogging tolerances of the objects stacked against the jogging edge 11 were lower than the tolerances allowable by automatic processing devices for stacked objects such as destackers for example.

Abstract

L'invention concerne un dispositif d'empilage d'objets plats dans lequel un convoyeur (2) approche sur chant les objets (1) à empiler. Un tambour (3) tourne en permanence devant l'orifice (9) d'un corps (4) cylindrique creux relié à source d'aspiration. La pile (23) des objets déjà empilés est plaquée contre ce tambour. Un boisseau (18), commandé en rotation par des moyens de pilotage (29), commande la mise en aspiration, au travers des ouvertures (6) du tambour (3), d'un objet inséré entre le tambour (3) et la pile (23). La mise en aspiration est temporisée pour correspondre à un déplacement du front avant de l'objet inséré entre l'orifice (9) et la rive de taquage (11) du réceptacle (10). Application : Tri postal.The invention relates to a device for stacking flat objects in which a conveyor (2) approaches the objects (1) to be stacked on edge. A drum (3) rotates continuously in front of the orifice (9) of a hollow cylindrical body (4) connected to a suction source. The stack (23) of already stacked objects is pressed against this drum. A plug (18), controlled in rotation by control means (29), controls the suction, through the openings (6) of the drum (3), of an object inserted between the drum (3) and the battery (23). The suction is timed to correspond to a displacement of the front front of the object inserted between the orifice (9) and the jogging edge (11) of the receptacle (10). Application: Postal sorting.

Description

L'invention concerne un dispositif d'empilage d'objets plats quelconques et plus particulièrement d'objets plats tels que des plis postaux. Elle concerne plus particulièrement un dispositif d'empilage qui range en piles horizontales des objets plats acheminés de façon unitaire et verticale par un convoyeur à courroie par exemple.The invention relates to a device for stacking any flat objects and more particularly flat objects such as postal envelopes. It relates more particularly to a stacking device which stores in horizontal stacks flat objects conveyed in a unitary and vertical fashion by a belt conveyor for example.

De nombreux dispositifs réalisant cette fonction équipent les sorties de machines de tri de plis postaux actuellement en service. De tels équipements ont des performances satisfaisantes pour l'usage qu'il en est fait. En effet la reprise manuelle par un opérateur de la pile d'objets plats constituée autorise quelques défauts aléatoires de rangement de ces objets. Ces défauts sont notamment : variation de l'inclinaison des objets dans la pile, variation d'altitude, détaquage arrière ou léger pliage du front avant de ces objets.Numerous devices performing this function are fitted to the outlets of postal letter sorting machines currently in service. Such equipment has satisfactory performance for the use that is made of it. Indeed, the manual recovery by an operator of the stack of flat objects formed allows some random storage faults of these objects. These faults are in particular: variation in the inclination of objects in the stack, variation in altitude, rear stapling or slight bending of the front edge of these objects.

Par contre lorsqu'on envisage une reprise automatique des objets stockés dans un empileur il s'avère indispensable de disposer d'une pile dans laquelle les défauts précédemment cités sonf mineurs. La présente invention a pour objet un dispositif d'empilage d'objets plats qui porte remède à ces défauts en assurant υn maintien permanent de ces objets tout au long de l'opération d'empilage.By cons when considering an automatic recovery of objects stored in a stacker it is essential to have a battery in which the previously mentioned defects are minor. The subject of the present invention is a device for stacking flat objects which remedies these defects by ensuring a permanent maintenance of these objects throughout the stacking operation.

L'invention concerne un dispositif d'empilage d'objets plats approchés sur leur chant par un convoyeur, ce dispositif comportant un tambour tournant sur lui-même en permanence autour d'un corps cylindrique fixe et creux, sensiblement orthogonal au sens d'arrivée des objets et dont les génératrices sont sensiblement parallèles à la surface de ces objets, ledit tambour étant muni sur toute sa périphérie d'une pluralités d'ouvertures régulièrement réparties pour permettre le passage de l'air entre ses faces extérieure et intérieure, ledit corps étant muni d'un circuit d'aspiration dont une extrémité débouche sur une extrémité dudit corps pour coopérer successivement avec lesdites ouvertures pendant leur passage devant cet orifice et assurer ainsi la prise par aspiration des objets approchés et leur conduite vers un réceptacle ou ils sont empilés, caractérisé en ce qu'il comporte des moyens mobiles de maintien des objets sur chant pour que la face extérieure du tambour soit en regard en permanence de la pile des objets empilés dans le réceptacle, des moyens d'insertion desdits objets agencés pour diriger chaque objet entre ladite pile et ladite face extérieure, des moyens de commande d'aspiration insérés dans ledit circuit, et des moyens de pilotage pour que l'aspiration soit limitée dans le temps entre l'instant d'insertion de chacun de ces objets et l'instant de la fin de mise en place de cet objet dans le réceptacle.The invention relates to a device for stacking flat objects approached on their edge by a conveyor, this device comprising a drum rotating on itself permanently around a fixed and hollow cylindrical body, substantially orthogonal to the direction of arrival. objects and whose generatrices are substantially parallel to the surface of these objects, said drum being provided over its entire periphery with a plurality of regularly distributed openings to allow the passage of air between its outer and inner faces, said body being provided with a suction circuit, one of which end opens onto one end of said body in order to cooperate successively with said openings during their passage in front of this orifice and thus ensure the taking in by suction of the approached objects and their conduct towards a receptacle where they are stacked, characterized in that it comprises mobile means holding objects on edge so that the outer face of the drum is permanently facing the stack of objects stacked in the receptacle, means for inserting said objects arranged to direct each object between said stack and said outer face, means suction control inserted in said circuit, and control means so that the suction is limited in time between the time of insertion of each of these objects and the time of the end of implementation of this object in the receptacle.

L'invention sera mieux comprise à l'aide des explications qui vont suivre faites en référence aux figures annexées dans lesquelles les mêmes repères désignent les mêmes éléments. Ces figures représentent :

  • - figure 1, une vue de dessus d'un dispositif d'empilage conforme à l'invention ;
  • - figure 2, une coupe dans un plan vertical des moyens de commande d'aspiration ;
  • - figure 3, une coupe dans un plan vertical d'un élément accessoire au dispositif de l'invention.
The invention will be better understood with the aid of the explanations which follow made with reference to the appended figures in which the same references designate the same elements. These figures represent:
  • - Figure 1, a top view of a stacking device according to the invention;
  • - Figure 2, a section in a vertical plane of the suction control means;
  • - Figure 3, a section in a vertical plane of an element accessory to the device of the invention.

La figure 1 montre, vue de dessus, une coupe horizontale du dispositif d'empilage de l'invention. Sur celle-ci des objets plats 1 sont approchés sur chant par un convoyeur à courroie 2.Un tambour 3 tournant sur lui-même dans le sens de la flèche FI est monté coaxialement sur un corps cylindrique 4 fixe et comportant un évidement creux 5. L'axe de rotation de ce tambour est orthogonal au sens d'arrivée des objets 1 selon la flèche F2 et est sensiblement parallèle à la surface de ces objets plats. Le tambour 3 comporte une pluralité d'ouvertures 6 régulièrement réparties à sa périphérie. Ces ouvertures 6 établissent une communication pour le passage de l'air entre les faces extérieure 7 et intérieure 8 du tambour 3. -Figure 1 shows, top view, a horizontal section of the stacking device of the invention. On this flat objects 1 are approached on edge by a belt conveyor 2. A drum 3 rotating on itself in the direction of the arrow FI is mounted coaxially on a cylindrical body 4 fixed and having a hollow recess 5. The axis of rotation of this drum is orthogonal to the direction of arrival of the objects 1 according to arrow F2 and is substantially parallel to the surface of these flat objects. The drum 3 has a plurality of openings 6 regularly distributed around its periphery. These openings 6 establish a communication for the passage of air between the outer 7 and inner 8 faces of the drum 3. -

L'évidement 5 du corps creux 4 comporte un orifice 9 débouchant sur la surface de ce corps 4. D'une manière préférée cette orifice 9 a une forme allongée et est colinéaire à la génératrice du corps cylindrique 4 sensiblement la plus proche d'un réceptacle 10. Ce réceptacle 10 comporte une rive de taquage 11 et des moyens de transport comportant un jeu de courroies 12 et 13 et une plaque de guidage 14. Les courroies 12, 13 et la plaque de guidage 14 se déplacent lors de l'opération d'empilage dans le sens des flèches F3.The recess 5 of the hollow body 4 has an orifice 9 opening onto the surface of this body 4. In a preferred manner this orifice 9 has an elongated shape and is collinear with the generatrix of the cylindrical body 4 substantially closest to a receptacle 10. This receptacle 10 comprises a jogging edge 11 and transport means comprising a set of belts 12 and 13 and a guide plate 14. The belts 12, 13 and the guide plate 14 move during the operation stacking in the direction of arrows F3.

L'évidement 5 du corps 4 est relié en permanence à une source d'aspiration non figurée. Il a une section sensiblement de la forme d'un chiffre 8. Il est ainsi divisé en deux parties de section circulaire : les parties 15 et 16 reliées entre elles par un canal 17. L'orifice 9 se trouve dans le prolongement de ces parties 15 et 16 débouchant à la périphérie du corps 4. La partie cylindrique circulaire 16 sert de logement à un boisseau 18 allongé. Ce boisseau joue le rôle d'une vanne. Elle est montrée ici dans une position ouverte. Elle permet le passage de l'air en provenance de l'extérieur à travers les ouvertures 6 en direction de la source d'aspiration. Les ouvertures 6 défilent devant l'orifice 9.The recess 5 of the body 4 is permanently connected to a source of suction that is not shown. It has a section substantially in the form of a number 8. It is thus divided into two parts of circular section: the parts 15 and 16 connected together by a channel 17. The orifice 9 is located in the extension of these parts 15 and 16 emerging at the periphery of the body 4. The circular cylindrical part 16 serves as a housing for an elongated plug 18. This bushel acts as a valve. It is shown here in an open position. It allows the passage of air from the outside through the openings 6 in the direction of the suction source. The openings 6 pass in front of the orifice 9.

Une pédale 20, articulée sur un axe 21 parallèle à l'axe du tambour, comporte un patin 22 affleurant le paquet 23 d'objets plats 1 empilés dans le réceptacle 10. Un manche 24 de la pédale 20, situé du même côté du patin 22 par rapport à l'axe 21, vient solliciter un détecteur 25. Cette pédale 20 est maintenue en position d'équilibre par un ressort de rappel 26. Le détecteur 25 peut être d'un type électromécanique. Un jeu de détecteurs 27 et 28, par exemple d'un type photoélectrique, détermine les instants de passage des objets 1 à la sortie du convoyeur 2. Les signaux électriques élaborés par les détecteurs 25, 27 et 28 sont dirigés sur un circuit de pilotage 29, par exemple d'un type électronique. En . fonction des indications reçues, le circuit de pilotage 29 commande la mise en service de moteurs d'un jeu de moteurs 30. Ces moteurs non représentés commandent notamment la rotation du boisseau 18 ainsi que l'avancement des moyens de transport du réceptacle 10.A pedal 20, articulated on an axis 21 parallel to the axis of the drum, comprises a pad 22 flush with the package 23 of flat objects 1 stacked in the receptacle 10. A handle 24 of the pedal 20, located on the same side of the pad 22 relative to the axis 21, comes to request a detector 25. This pedal 20 is held in the equilibrium position by a return spring 26. The detector 25 can be of an electromechanical type. A set of detectors 27 and 28, for example of a photoelectric type, determines the instants of passage of the objects 1 at the exit of the conveyor 2. The electrical signals produced by the detectors 25, 27 and 28 are directed on a control circuit 29, for example of an electronic type. In . as a function of the indications received, the control circuit 29 controls the commissioning of motors of a set of motors 30. These motors, not shown, in particular control the rotation of the plug 18 as well as the advancement of the means of transport of the receptacle 10.

Le fonctionnement du dispositif de l'invention est décrit maintenant. Le convoyeur 2 est disposé sur le côte du tambour 3. Sa sortie est orientée dans une direction oblique par rapport à la surface des objets déjà empilés dans le réceptacle. Il dirige l'objet 1 à empiler pour l'insérer entre le paquet d'objets 23 et le tambour 3. A sa sortie du convoyeur 2 l'objet 1 occulte la cellule photoélectrique du détecteur 27 et ce détecteur 27 envoie une impulsion au circuit de pilotage 29. Après une temporisation correspondant à la durée nécessaire pour que le front avant de l'objet 1 vienne s'insérer entre le paquet 23 et le tambour 3, le circuit de pilotage 29 envoie un ordre aux moteurs de basculement du boisseau 18. Ce boisseau 18 tourne alors dans le sens de la flèche F5, d'une position fermée à la position ouverte présentée sur la figure 1. Dans ces conditions, la source d'aspiration reliée à l'évidement 5 aspire la face postérieure du front avant de l'objet plat à empiler. Cette face est dite postérieure par rapport au sens d'avancement qu'elle aura dans le réceptacle 10.The operation of the device of the invention is now described. The conveyor 2 is arranged on the side of the drum 3. Its outlet is oriented in an oblique direction relative to the surface of the objects already stacked in the receptacle. He directs the object 1 to be stacked to insert it between the package of objects 23 and the drum 3. On leaving the conveyor 2 the object 1 obscures the photoelectric cell of the detector 27 and this detector 27 sends a pulse to the circuit pilot 29. After a delay corresponding to the time necessary for the front edge of the object 1 to be inserted between the package 23 and the drum 3, the pilot circuit 29 sends an order to the tilting motors of the plug 18 This plug 18 then turns in the direction of arrow F5, from a closed position to the open position shown in FIG. 1. Under these conditions, the suction source connected to the recess 5 sucks the rear face of the front front of the flat object to be stacked. This face is said to be posterior with respect to the direction of advance it will have in the receptacle 10.

Comme le tambour tourne en permanence il entraîne l'objet 1 à empiler en direction de la rive de taquage 11. L'orifice 9 a un développement sur le pourtour du corps 4 limité de l'ordre de deux à trois fois la largeur du pas de répartition des ouvertures 6 sur le tambour 3. Dès que les ouvertures 6 du tambour 3 ayant participé à l'aspiration de l'objet à empiler ont dépassé la limite de l'orifice 9 elles ne sont plus en liaison avec la source d'aspiration. Le front avant de l'objet 1 qui était alors plaqué en un contact roulant sur ces ouvertures actives du tambour se décolle naturellement.As the drum is constantly rotating, it causes the object 1 to be stacked in the direction of the jogging edge 11. The orifice 9 has a development on the periphery of the body 4 limited on the order of two to three times the width of the step distribution of the openings 6 on the drum 3. As soon as the openings 6 of the drum 3 having participated in the aspiration of the object to be stacked have exceeded the limit of the orifice 9 they are no longer in connection with the source of aspiration. The front edge of the object 1 which was then pressed into a rolling contact on these active openings of the drum comes off naturally.

Le tambour continue son action jusqu'à ce que le front avant de l'objet à empiler vienne en butée sur la rive de taquage 11. La durée de cette action élémentaire est limitée par une temporisation tenant compte de la vitesse de rotation du tambour 3 et de la distance séparant la rive de taquage 11 et le diamètre de ce tambour parallèle à cette rive de taquage. Cette temporisation est fonction du temps mis par le front avant de l'objet. à empiler pour franchir la distance séparant l'orifice 9 de la rive de taquage 11.The drum continues its action until the front edge of the object to be stacked abuts on the jogging edge 11. The duration of this elementary action is limited by a time delay taking into account the speed of rotation of the drum 3 and of the distance separating the jogging edge 11 and the diameter of this drum parallel to this jogging edge. This time delay is a function of the time taken by the front edge of the object. stack to cross the distance separating the orifice 9 from the jogging edge 11.

A ce moment le circuit de pilotage envoie un ordre, contraire au précédent, au moteur actionnant le boisseau 18 de manière à interrompre l'aspiration.At this time the control circuit sends an order, contrary to the previous one, to the motor actuating the plug 18 so as to interrupt the suction.

On voit ici les particularités de l'invention. D'une part le réglage de la durée de l'action d'aspiration permet d'obtenir un taquage uniforme de tous les objets à empiler. D'autre part à cet effet, l'action d'empilage exercée par le tambour doit être courte. Aussi, de manière à ne pas être pénalisée par les temps de montée de la mise en aspiration, l'invention a-t-elle prévu , de disposer le boisseau 18 directement en aval de la face intérieure 8 du tambour 3. Dans ces conditions, le temps de montée de la mise en aspiration est réduit à la durée de la mise au vide du volume intérieur du boisseau 18. Ce volume étant faible cette action est donc rapide. Par ailleurs, lors de la fermeture de la vanne, l'interruption de l'aspiration est de même très rapide. Il découle de cette particularité que le réglage de la durée d'aspiration est précis.Here we see the peculiarities of the invention. On the one hand the adjustment of the duration of the suction action makes it possible to obtain a uniform jogging of all the objects to be stacked. On the other hand for this purpose, the stacking action exerted by the drum must be short. Also, so as not to be penalized by the rise times of the suction, the invention did it provide, to have the plug 18 directly downstream of the inner face 8 of the drum 3. Under these conditions , the rise time of the suction is reduced to the duration of the evacuation of the interior volume of the plug 18. This volume being small this action is therefore rapid. Furthermore, when the valve is closed, the interruption of the suction is likewise very rapid. It follows from this feature that the setting of the suction time is precise.

Lors de son avancement le pli 1 empilé vient frotter sous le patin 22 de la pédale 20. Sous cette action cette pédale 20 tourne autour de son axe 21 dans le sens de la flèche F4. L'extrémité du manche 24 de cette pédale vient exciter le détecteur 25. Ce détecteur 25 élabore à cet instant un ordre en direction du circuit de pilotage 29. Ce circuit de pilotage 29 commande alors l'action des moteurs des moyens de transport 12, 13 et 14. Le déplacement de ces moyens de transport provoque la décompression du paquet 23 jusqu'à ce que le frottement exercé par le patin 22 sur le nouvel objet empilé soit insuffisant pour contrer l'effort de rappel du ressort 26. Dans ce cas, la pédale 20 reprend sa position de repos et interrompt l'action des moteurs des moyens de transport. L'asservissement ainsi décrit peut avoir une tout autre allure. Notamment si les objets à empiler sont de dimensions homogènes entre eux, on peut supprimer la pédale 20 ainsi que le détecteur 25, cet ensemble étant remplacé par une action séquentielle supplémentaire produite par le circuit de pilotage 29 et initialisée par l'impulsion du détecteur 27. Cette action séquentielle a alors pour effet de faire avancer les moyens de transport d'un cran dont l'amplitude correspond à l'épaisseur des objets à empiler.During its advancement, the stacked fold 1 rubs under the pad 22 of the pedal 20. Under this action, this pedal 20 rotates about its axis 21 in the direction of the arrow F4. The end of the handle 24 of this pedal excites the detector 25. This detector 25 at this instant develops an order in the direction of the control circuit 29. This control circuit 29 then controls the action of the motors of the transport means 12, 13 and 14. The displacement of these means of transport causes the decompression of the package 23 until the friction exerted by the pad 22 on the new stacked object is insufficient to counter the return force of the spring 26. In this case , the pedal 20 returns to its rest position and interrupts the action of the motors of the means of transport. The enslavement thus described may have a completely different appearance. In particular if the objects to be stacked are of homogeneous dimensions with one another, the pedal 20 and the detector 25 can be eliminated, this assembly being replaced by an additional sequential action produced by the control circuit 29 and initialized by the pulse of the detector 27 This sequential action then has the effect of advance the means of transport one notch whose amplitude corresponds to the thickness of the objects to be stacked.

Une autre particularité de l'invention réside dans le fait que le paquet d'objets 23 est empilé dans un réceptacle 10 s'étendant sensiblement horizontalement. Le maintien vertical de ces objets 1 dans la pile horizontale du côté des organes d'empilage est essentiellement exercé par les génératrices du tambour en contact avec ce paquet. Lorsqu'aucun objet n'est approché ou entre l'approche de deux objets, la source d'aspiration n'étant plus reliée aux ouvertures 6, la face extérieure 7 de ce tambour glisse sans frottement sur les objets 1 empilés. Elle réalise leur maintien vertical. A cet effet, cette face 7 est préférentiellement lisse.Another feature of the invention lies in the fact that the pack of objects 23 is stacked in a receptacle 10 extending substantially horizontally. The vertical maintenance of these objects 1 in the horizontal stack on the side of the stacking members is essentially exerted by the generatrices of the drum in contact with this package. When no object is approached or between the approach of two objects, the suction source no longer being connected to the openings 6, the outer face 7 of this drum slides without friction on the stacked objects 1. It realizes their vertical maintenance. For this purpose, this face 7 is preferably smooth.

Sur la figure 2 on distingue une coupe du tambour 3 et du corps 4 de l'empileur dans un plan perpendiculaire aux faces des objets empilés. On remarque que l'axe XX' de rotation du tambour est parallèle à l'axe YY' de rotation du boisseau 18 dans son logement 16. Le boisseau 18 tourne ainsi sur lui-même alternativement selon les commandes du circuit de pilotage 29 dans le sens de la double flèche F5. Dans une variante les ouvertures 6 sont des fentes pratiquées selon des génératrices du tambour sur tout son pourtour. Dans une autre variante de l'invention les ouvertures 6 pratiquées dans le tambour sont des trous. Ces trous peuvent être distribués sur toute la hauteur du tambour en une pluralité d'alignements, parallèles à un certain nombre de génératrices particulières du tambour, ces génératrices particulières étant régulièrement réparties selon un pas donné tout autour du tambour. Dans une variante préférée, les trous seront distribués sur une pluralité d'alignements hélicoïdaux décalés les uns des autres selon un pas donné sur toute la périphérie de ce tambour.In Figure 2 there is a section of the drum 3 and the body 4 of the stacker in a plane perpendicular to the faces of the stacked objects. It is noted that the axis XX 'of rotation of the drum is parallel to the axis YY' of rotation of the plug 18 in its housing 16. The plug 18 thus rotates on itself alternately according to the commands of the control circuit 29 in the direction of the double arrow F5. In a variant, the openings 6 are slots made along generatrices of the drum around its entire periphery. In another variant of the invention the openings 6 made in the drum are holes. These holes can be distributed over the entire height of the drum in a plurality of alignments, parallel to a certain number of particular generatrices of the drum, these particular generatrices being regularly distributed at a given pitch all around the drum. In a preferred variant, the holes will be distributed over a plurality of helical alignments offset from one another at a given pitch over the entire periphery of this drum.

La raison de ces distributions particulières des ouvertures réside dans la nécessité de réduire le bruit occasionné par le passage de l'air pendant les durées d'aspiration. La disposition des trous selon des alignements hélicoïdaux décalés a pour effet de casser le rythme d'apparition de ce bruit lié au pas de répartition des trous. Ainsi, en face de l'orifice longitudinal 9, la répartition verticale des trous n'est plus uniforme. Dans ces conditions Il est possible de réduire le développement de l'orifice 9 à une largeur inférieure au pas de décalage des alignements hélicoïdaux. La figure 2 montre enfin la courroie 13 du moyen de transport du réceptacle 10. Cette courroie 13 sert ainsi de support horizontal aux paquets 23 empilés.The reason for these particular distributions of the openings lies in the need to reduce the noise caused by the passage of air during the suction times. The arrangement of the holes according to offset helical alignments has the effect of breaking the rhythm of appearance of this noise linked to the pitch of distribution of the holes. So in opposite the longitudinal orifice 9, the vertical distribution of the holes is no longer uniform. Under these conditions, it is possible to reduce the development of the orifice 9 to a width less than the offset step of the helical alignments. FIG. 2 finally shows the belt 13 of the means of transport of the receptacle 10. This belt 13 thus serves as a horizontal support for the stacked packages 23.

La figure 3 montre en coupe un moyen accessoire de maintien de l'invention. Ce moyen accessoire est une came 31, elle est visible par ailleurs sur la figure 1 à la sortie du convoyeur 2. Cette came 31 comporte deux doigts 32 en forme de virgule, solidarisés sur un arbre 33 pouvant tourner autour d'un axe ZZ' parallèle à l'axe du tambour. Ces deux doigts sont espacés verticalement pour appuyer en deux endroits sur la face postérieure des objets empilés. La rotation s'effectue dans le sens de la flèche F6 (figure 1). L'arbre 33 est entraîné par un moteur, non figuré, également commandé par le circuit de pilotage 29. Le fonctionnement de cette came est le suivant : lorsque le front avant d'un objet occulte le photodétecteur 28, ce photodétecteur 28 émet une impulsion électrique en direction du circuit 29. Ce circuit actionne le moteur de la came 31 pour qu'elle effectue un tour sur elle-même. La vitesse et l'instant de passage de cette came 31 sont calculés pour que son extrémité s'efface devant le front avant de l'objet à empiler qui arrive, et pour que dans un mouvement tournant continu elle vienne plaquer le front arrière de l'objet qui vient d'être empilé sur le paquet 23.Figure 3 shows in section an accessory means for holding the invention. This accessory means is a cam 31, it is also visible in FIG. 1 at the outlet of the conveyor 2. This cam 31 comprises two fingers 32 in the form of a comma, secured to a shaft 33 which can rotate around an axis ZZ ' parallel to the axis of the drum. These two fingers are spaced vertically to press in two places on the rear side of the stacked objects. The rotation takes place in the direction of arrow F6 (Figure 1). The shaft 33 is driven by a motor, not shown, also controlled by the piloting circuit 29. The operation of this cam is as follows: when the front edge of an object obscures the photodetector 28, this photodetector 28 emits a pulse electric in the direction of circuit 29. This circuit actuates the motor of cam 31 so that it performs a revolution on itself. The speed and the instant of passage of this cam 31 are calculated so that its end disappears in front of the front front of the stacking object which arrives, and so that in a continuous rotating movement it comes to press the rear front of the object just stacked on package 23.

Cette came 31 a ainsi deux fonctions. Une première fonction : elle permet au front avant d'un objet nouvellement approché de venir sans encombre s'insérer entre le tambour 3 et le paquet 23 à proximité de l'orifice 9. En effet, selon la nature des objets et leur conformation, les fronts arrières des objets empilés peuvent s'écarter en éventail dans la pile et gêner ainsi l'insertion d'un nouvel objet. La came 31 n'est nécessaire que lorsque la sortie du convoyeur 2 est peu inclinée par rapport à la normale à la rive de taquage II.Une deuxième fonction consiste à participer au maintien du paquet d'objets 23 dans le réceptacle 10. Sur la figure 1 la came 31 est représentée en position travail, cette position n'est pas sa position de repos. La position de repos est telle que l'orientation de la came est sensiblement inclinée par rapport à la normale aux faces des objets du paquet 23.This cam 31 thus has two functions. A first function: it allows the front edge of a newly approached object to come safely between the drum 3 and the package 23 near the orifice 9. Indeed, depending on the nature of the objects and their conformation, the rear edges of stacked objects can spread out in a fan shape in the stack and thus hinder the insertion of a new object. The cam 31 is only necessary when the output of the conveyor 2 is slightly inclined relative to normal to the jogging edge II. A second function consists in helping to maintain the pack of objects 23 in the receptacle 10. On the figure 1 the cam 31 is shown in the working position, this position is not its rest position. The rest position is such that the orientation of the cam is substantially inclined relative to normal to the faces of the objects of the package 23.

D'une manière préférée dans l'invention, la distance séparant l'extrémité du convoyeur 2, se trouvant sensiblement à la hauteur du détecteur 27, de l'orifice 9 est inférieure à la longueur des objets à empiler. Cette longueur étant mesurée perpendiculairement à la rive de taquage 11. La différence entre ces deux longueurs est inférieure à la distance séparant l'orifice 9 de la rive de taquage 11. Ceci permet à la came 31 de repousser les fronts arrières des objets à empiler sans qu'ils s'accrochent à la sortie du convoyeur 2 et qu'ils ne puissent pas ainsi provoquer de bourrages.In a preferred manner in the invention, the distance separating the end of the conveyor 2, being substantially at the height of the detector 27, from the orifice 9 is less than the length of the objects to be stacked. This length being measured perpendicular to the jogging edge 11. The difference between these two lengths is less than the distance separating the orifice 9 from the jogging edge 11. This allows the cam 31 to push back the rear edges of the objects to be stacked without them catching on the outlet of the conveyor 2 and they cannot thus cause jams.

Le dispositif d'empilage d'objets plats selon l'invention a été réalisé. Après une phase d'ajustage concernant notamment les réglages des temporisations il a été constaté un fonctionnement en empilage de plis postaux dans lequel des incidents de bourrage ne sont pas apparus et dans lequel les tolérances de taquage des objets empilés contre la rive de taquage 11 était inférieures aux tolérances admissibles par des organes de traitement automatiques d'objets empilés tels que des dépileurs par exemple.The device for stacking flat objects according to the invention has been produced. After an adjustment phase concerning, in particular, the timing settings, it was found that the postal envelopes were stacked in which jamming incidents did not appear and in which the jogging tolerances of the objects stacked against the jogging edge 11 were lower than the tolerances allowable by automatic processing devices for stacked objects such as destackers for example.

Claims (9)

l. Dispositif d'empilage d'objets plats (1) approchés sur leur chant par un convoyeur (2), ce dispositif comportant un tambour (3) tournant sur lui-même en permanence autour d'un corps (4) cylindrique fixe et creux sensiblement orthogonal au sens d'arrivée des objets et dont les génératrices sont sensiblement parallèles à la surface de ces objets, ledit tambour étant muni sur toute sa périphérie d'une pluralité d'ouvertures (6) régulièrement réparties pour permettre le passage de l'air entre ses faces extérieure (7) et intérieure (8), ledit corps étant muni d'un circuit d'aspiration dont une extrémité débouche sur un orifice (9) dudit corps pour coopérer successivement avec lesdites ouvertures pendant leur passage devant cet orifice et assurer ainsi la prise par aspiration des objets approchés et leur conduite vers un réceptacle (10) où ils. sont empilés, caractérisé en ce qu'il comporte des moyens (12,13,14) mobiles de maintien des objets sur chant pour que la face extérieure (7) du tambour soit en regard en permanence de la pile (23) des objets empilés dans le réceptacle, des moyens (2) d'insertion desdits objets agencés pour diriger chaque objet entre ladite pile et ladite face extérieure du tambour, des moyens de commande (18) d'aspiration insérés dans ledit circuit, et des moyens (29) de pilotage pour que l'aspiration soit limitée dans le temps entre l'instant d'insertion de chacun de ces objets et l'instant de la fin de mise en place de ces objets dans le réceptacle.l. Device for stacking flat objects (1) approached on their edge by a conveyor (2), this device comprising a drum (3) rotating continuously on itself around a cylindrical body (4) fixed and hollow substantially orthogonal to the direction of arrival of the objects and whose generatrices are substantially parallel to the surface of these objects, said drum being provided over its entire periphery with a plurality of openings (6) regularly distributed to allow the passage of air between its outer (7) and inner (8) faces, said body being provided with a suction circuit, one end of which opens onto an orifice (9) of said body to cooperate successively with said openings during their passage in front of this orifice and ensure thus the intake by suction of the approached objects and their conduct towards a receptacle (10) where they. are stacked, characterized in that it includes movable means (12,13,14) for holding objects on edge so that the outer face (7) of the drum is permanently facing the stack (23) of stacked objects in the receptacle, means (2) for inserting said objects arranged to direct each object between said stack and said outside face of the drum, suction control means (18) inserted in said circuit, and means (29) piloting so that the suction is limited in time between the moment of insertion of each of these objects and the moment of the end of placement of these objects in the receptacle. 2. Dispositif selon la revendication 1 caractérisé en ce que les moyens mobiles de maintien comportent des moyens de transport ( 12,13,14)et des moyens (20,21,22,24et 25) de contre-réaction pour asservir en position ces moyens de transport à l'épaisseur de la pile des objets empilés dans le réceptacle.2. Device according to claim 1 characterized in that the movable holding means comprise means of transport (12,13,14) and means (20,21,22,24et 25) for feedback to enslave in position these means of transporting the thickness of the stack of objects stacked in the receptacle. 3. Dispositif selon la revendication 1 caractérisé en ce que les moyens mobiles de maintien comportent des moyens de transport et des moyens de pilotage pour commander séquentiellement le déplacement de ces moyens de transport au rythme de l'arrivée des plis à empiler.3. Device according to claim 1 characterized in that the mobile holding means comprise means of transport and control means for sequentially controlling the movement of these means of transport at the rate of the arrival of the folds to be stacked. 4. Dispositif selon l'une quelconque des revendications 1 à 3 caractérisé en ce que les moyens d'insertion comportent un convoyeur (2) dont la sortie est orientée dans une direction oblique par rapport aux faces des objets empilés dans le réceptacle et comportent une came (31) actionnée par les moyens de pilotage pour coopérer au maintien des objets empilés et pour repousser le front arrière des objets empilés lors de leur empilage.4. Device according to any one of claims 1 to 3 characterized in that the insertion means comprise a conveyor (2) whose outlet is oriented in an oblique direction relative to the faces of the objects stacked in the receptacle and comprise a cam (31) actuated by the control means to cooperate in maintaining the stacked objects and to push the rear edge of the stacked objects when they are stacked. 5. Dispositif selon l'une quelconque des revendications 1 à 4 caractérisé en ce que les moyens de commande d'aspiration comportent une vanne (18) disposée directement en aval de l'orifice du corps creux.5. Device according to any one of claims 1 to 4 characterized in that the suction control means comprise a valve (18) disposed directly downstream of the orifice of the hollow body. 6. Dispositif selon la revendication 5 caractérisé en ce que la vanne comporte un boisseau (18) de forme allongée pouvant basculer dans un logement (16) pratiqué dans ce corps creux.6. Device according to claim 5 characterized in that the valve comprises a plug (18) of elongated shape which can tilt in a housing (16) formed in this hollow body. 7. Dispositif selon l'une quelconque dès revendications 1 à 6 caractérisé en ce que les ouvertures (6) comportent une pluralité de trous distribués sur une pluralité d'alignements hélicoïdaux régulièrement décalés les uns par rapport aux autres selon un pas donné sur le pourtour du tambour pour contribuer ainsi à réduire le bruit d'aspiration.7. Device according to any one from claims 1 to 6 characterized in that the openings (6) comprise a plurality of holes distributed over a plurality of helical alignments regularly offset from each other at a given pitch around the periphery drum to help reduce suction noise. 8. Dispositif selon l'une quelconque des revendications 1 à 6 caractérisé en ce que les ouvertures (6) comportent une pluralité de trous distribués sur une pluralité de génératrices régulièrement réparties les unes par rapport aux autres selon un pas donné sur le pourtour du tambour.8. Device according to any one of claims 1 to 6 characterized in that the openings (6) comprise a plurality of holes distributed over a plurality of generators regularly distributed with respect to each other at a given pitch around the periphery of the drum . 9. Dispositif selon l'une quelconque des revendications 1 à 6 caractérisé en ce que les ouvertures (6) sont des fentes orientées selon les génératrices du tambour.9. Device according to any one of claims 1 to 6 characterized in that the openings (6) are slots oriented along the generatrices of the drum.
EP83402528A 1982-12-30 1983-12-23 Device for stacking flat objects Expired EP0115237B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8222071 1982-12-30
FR8222071A FR2538797B1 (en) 1982-12-30 1982-12-30 DEVICE FOR STACKING FLAT OBJECTS

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EP0115237A1 true EP0115237A1 (en) 1984-08-08
EP0115237B1 EP0115237B1 (en) 1987-04-29

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EP (1) EP0115237B1 (en)
JP (1) JPS59124649A (en)
AU (1) AU557833B2 (en)
CA (1) CA1215401A (en)
DE (1) DE3371189D1 (en)
FR (1) FR2538797B1 (en)

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US3025052A (en) * 1958-02-25 1962-03-13 Ibm Sheet feeding device
BE651187A (en) * 1963-08-02 1964-11-16
US4116430A (en) * 1975-09-16 1978-09-26 De La Rue Crosfield Limited Stacking apparatus for flexible sheets
FR2410619A1 (en) * 1977-12-01 1979-06-29 Ibm DEVICE FOR TRANSPORTING FLEXIBLE SHEETS OF DIFFERENT DIMENSIONS
FR2489798A1 (en) * 1980-09-05 1982-03-12 Hotchkiss Brandt Sogeme DEVICE FOR STACKING THIN AND FLEXIBLE OBJECTS

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US1744814A (en) * 1925-01-02 1930-01-28 Dexter Folder Co Sheet feeder
US3025052A (en) * 1958-02-25 1962-03-13 Ibm Sheet feeding device
BE651187A (en) * 1963-08-02 1964-11-16
US4116430A (en) * 1975-09-16 1978-09-26 De La Rue Crosfield Limited Stacking apparatus for flexible sheets
FR2410619A1 (en) * 1977-12-01 1979-06-29 Ibm DEVICE FOR TRANSPORTING FLEXIBLE SHEETS OF DIFFERENT DIMENSIONS
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EP2724965A1 (en) * 2012-10-24 2014-04-30 Pitney Bowes Inc. Anti-abrasion assembly for mailpiece stacking assembly
EP2724963A1 (en) * 2012-10-24 2014-04-30 Pitney Bowes Inc. Stacking assembly for a mailpiece sorter

Also Published As

Publication number Publication date
AU2297083A (en) 1984-07-05
JPS59124649A (en) 1984-07-18
FR2538797B1 (en) 1986-02-14
EP0115237B1 (en) 1987-04-29
FR2538797A1 (en) 1984-07-06
CA1215401A (en) 1986-12-16
AU557833B2 (en) 1987-01-08
DE3371189D1 (en) 1987-06-04
US4591142A (en) 1986-05-27

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