EP2332871A1 - Method for cutting and folding a paper strip and corresponding device - Google Patents

Method for cutting and folding a paper strip and corresponding device Download PDF

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Publication number
EP2332871A1
EP2332871A1 EP09290927A EP09290927A EP2332871A1 EP 2332871 A1 EP2332871 A1 EP 2332871A1 EP 09290927 A EP09290927 A EP 09290927A EP 09290927 A EP09290927 A EP 09290927A EP 2332871 A1 EP2332871 A1 EP 2332871A1
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EP
European Patent Office
Prior art keywords
folding
cutting
segments
paper web
web
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Withdrawn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
EP09290927A
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German (de)
French (fr)
Inventor
Guy Decorte
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Individual
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Individual
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Publication date
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Priority to EP09290927A priority Critical patent/EP2332871A1/en
Publication of EP2332871A1 publication Critical patent/EP2332871A1/en
Withdrawn legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H33/00—Forming counted batches in delivery pile or stream of articles
    • B65H33/16—Forming counted batches in delivery pile or stream of articles by depositing articles in batches on moving supports
    • B65H33/18—Forming counted batches in delivery pile or stream of articles by depositing articles in batches on moving supports with separators between adjacent batches
    • 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
    • B65H31/32—Auxiliary devices for receiving articles during removal of a completed pile
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H45/00—Folding thin material
    • B65H45/12—Folding articles or webs with application of pressure to define or form crease lines
    • B65H45/20—Zig-zag folders

Definitions

  • the present invention relates to a method and a device for cutting and folding a multi-sheet paper web including, but not limited to, a method and a device for cutting and folding a printed paper web, in particular for the constitution of newspapers.
  • figure 1 is a schematic representation of a folding machine of the prior art
  • a folder comprising a cutting cylinder 1 equipped with a cutting blade 2 mounted opposite a transfer cylinder 3 comprising rows of retractable pins 4 and a corresponding number of engaging blades 5, with grooved gripping cylinders 6 being mounted adjacent to the transfer cylinder 3.
  • An object of the invention is to provide a method and a device for cutting and folding a multifibre paper web capable of operating at a very high rate.
  • the assembled paper sheets do not undergo any reversal of movement so that the whiplash phenomenon is eliminated and the accordion folding rate can be very high without risk of deterioration of the tape. paper.
  • the cutting of a stack of accordion band segments can be performed continuously, so that the cutting operation in no way affects the bending rate.
  • the cutting of the segments of band is performed between fold lines of the band preferably midway between them.
  • two identical copies are simultaneously produced so that the rate of production of the copies is improved.
  • this relates to a device for cutting and folding a paper web
  • a folding member comprising two contrarotating folding cylinders adjacent to each other and each comprising at least one an engaging blade and at least one set of gripping jaws, the cylinders being mounted relative to each other so that alternatively an engaging blade of one of the cylinders engages between the gripping jaws of the another folding cylinder during a rotation of the folding rolls, the paper web being arranged to extend between the folding rolls; a cutting member disposed downstream of the folding member with reference to a direction of movement of the paper web between the folding rolls; inserts mounted to be engaged between folds of the paper web downstream of the folding member with reference to a movement of the paper web between the folding rolls, characterized in that the inserts are controlled to bow downstream of the cutting member and upstream of the outlet of the device.
  • the device is intended to cut and fold a paper web 7, for example a paper web having a plurality of sheets 30 superimposed and folded in a first fold 31.
  • a paper web 7 for example a paper web having a plurality of sheets 30 superimposed and folded in a first fold 31.
  • the device comprises a folding member generally designated 8 comprising two folding cylinders 9 rotated in counter-rotating directions towards the paper strip 7.
  • the folding cylinders 9 are identical and each comprise four grooves 10 arranged at 90 ° to each other and in which are alternately mounted an engaging blade 11 or a jaw clearance 12.
  • the two folding cylinders 9 are wedged relative to each other so that during the rotation of the folding cylinders one of the engaging blades 11 comes opposite a set of jaws 12.
  • the paper strip 7 is folded in a stack 13 of strip segments 14 interconnected by a folding accordion.
  • the device further comprises a cutting member 15, for example a reciprocating saw extending in a direction perpendicular to the band segments 14 and parallel to the fold lines 16.
  • a cutting member 15 for example a reciprocating saw extending in a direction perpendicular to the band segments 14 and parallel to the fold lines 16.
  • the band segments 14 extend in a vertical stack so that when cutting by a vertical cutting member, the notebooks 17 obtained fall by gravity towards the exit of the cutting and folding device.
  • the device comprises a member for inserting inserts 18 which are disengageably mounted on a flexible support 19 driven in the same direction of travel as the stack of strip segments 14 and ordered to fit into the stack of tape segments to delimit a handful of copies of notebooks depending on the number of copies to form a package of size determined for each recipient.
  • the drive mode of the inserts 18 is configured so that upstream of the cutting member 15 the stack 13 of band segments 14 is subjected to compression, for example by realizing below the cutting member 15 a disengagement of the inserts 18 relative to the drive members 19 and a simultaneous retention of these inserts relative to the frame of the device while the inserts extending above the body of the device cutting remain attached to the drive member 19.
  • the inserts 18 are inclined downstream immediately downstream of the cutting member 15, which facilitates their release from the cutting member, then they are instead inclined upwards to promote a support of the line bending against guides 20 just before the fall of copies cut and folded in baskets 21 of a stacker counter 22 associated with each column of cut copies.
  • each stacker counter 22 comprises four baskets 21 each mounted for pivoting relative to a cross platform 23 itself mounted to pivot about a vertical axis in order to be able to pivot on the one hand basket 21 around its axis for making packages from handles arranged in different orientations to balance the thicknesses resulting from the fold, and to rotate the platform to have a new basket under the folder while the package contained in a defined basket is evacuated to a packaging machine.
  • the device according to the invention may also be equipped with inserting devices 24 arranged to introduce documents to insert directly at the exit of the folding member.
  • the device illustrated by the figure 2 comprises a single cutting member 15 providing a cutting band segments 14 equidistant from the fold lines 16, which corresponds to a nominal format of the books finally made.
  • the device preferably comprises two cutting members 15 spaced from one another as illustrated by the figure 4 , the structure of the cutting and folding device being otherwise identical to that of the figure 2 .
  • the two cutting members 15 thus make two cutting lines spaced from one another. With a very low adaptation of the initial device, it is thus possible to produce notebooks of similar formats by eliminating the excess paper portion.
  • the figure 5 illustrates a third embodiment of the device according to the invention wherein the folding cylinders 25 each comprise eight grooves 10 of which four are arranged at 90 ° from each other while the other four are arranged in pairs at 120 ° the one of the other.
  • the folding cylinders 25 each comprise eight grooves 10 of which four are arranged at 90 ° from each other while the other four are arranged in pairs at 120 ° the one of the other.
  • the four grooves 10 at 90 ° to each other are equipped with engaging blades 11 and jaw sets 12 as illustrated by FIG. figure 2 the other grooves 10 being covered by a cover.
  • the operation is identical to that of the figure 2 and we obtain notebooks of a nominal size.
  • band segments 26 having a width equal to two thirds of the nominal width illustrated on FIG. figure 2 .
  • the inserts 18 are then replaced by inserts 27 of smaller width than the inserts 18 and the guides 20 are brought together to provide guidance of notebooks of reduced size.
  • the invention has been described with folding rolls each having four or more grooves 10, the invention may be realized with folding rolls each having two grooves only, arranged diametrically opposite one another. to the other, one of them receiving an engaging blade while the other receives a set of jaws 12.
  • the cylinders with two grooves 10 only make it possible to produce only two notebooks per revolution. For a given rate, it is therefore necessary to rotate the cylinders twice as fast.
  • the cutting member has been placed at a distance from the fold lines, it is also possible to produce the device according to the invention by arranging the cutting member on one side of the stack of segments. band.
  • a single copy of the notebook is formed by each fold, which is a disadvantage from the point of view of the production rate of the notebooks, but may constitute an advantage from the point of view of the size, the dimensions of the device. being then smaller than in the illustrated embodiments.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)

Abstract

The method involves folding a paper strip (7) in an alternating manner along a folding direction for forming a stack of strip segments (14) connected with each other along an accordion folding. The strip segments are cut in a direction perpendicular to the strip segments and between folding lines (16) of the strip segments, where the cutting is carried out in equidistant from the folding lines. The strip segments are compressed during cutting the segments. An independent claim is also included for a device for folding and cutting a paper strip.

Description

La présente invention concerne un procédé et un dispositif de découpage et de pliage d'une bande de papier multifeuille notamment, bien que non exclusivement, un procédé et un dispositif pour effectuer un découpage et un pliage d'une bande de papier imprimé, en particulier pour la constitution de journaux.The present invention relates to a method and a device for cutting and folding a multi-sheet paper web including, but not limited to, a method and a device for cutting and folding a printed paper web, in particular for the constitution of newspapers.

ARRIERE PLAN DE L'INVENTIONBACKGROUND OF THE INVENTION

Comme illustré par la figure 1 qui est une représentation schématique d'une plieuse de l'art antérieur, il est connu de réaliser une plieuse comportant un cylindre de coupe 1 équipé d'une lame de coupe 2 montée en regard d'un cylindre de transfert 3 comportant des rangées de picots rétractables 4 et un nombre correspondant de lames engageantes 5, des cylindres de préhension cannelés 6 étant montés adjacents au cylindre de transfert 3.As illustrated by figure 1 which is a schematic representation of a folding machine of the prior art, it is known to make a folder comprising a cutting cylinder 1 equipped with a cutting blade 2 mounted opposite a transfer cylinder 3 comprising rows of retractable pins 4 and a corresponding number of engaging blades 5, with grooved gripping cylinders 6 being mounted adjacent to the transfer cylinder 3.

Lors du fonctionnement de la plieuse, le bord d'attaque d'une bande de papier 7 est saisi par des picots 4 et entraîné par la rotation du cylindre de transfert 3. A chaque passage de la lame de coupe 2, un segment de bande est coupé et la lame engageante 5 correspondante est simultanément commandée pour provoquer une introduction de la partie médiane du segment de bande 8 entre les cylindres cannelés 6 qui assurent un pliage et une éjection du cahier ainsi réalisé.During the operation of the folder, the leading edge of a paper strip 7 is gripped by pins 4 and driven by the rotation of the transfer cylinder 3. At each passage of the cutting blade 2, a web segment is cut and the corresponding engaging blade 5 is simultaneously controlled to cause introduction of the middle portion of the web segment 8 between the corrugated rollers 6 which ensure folding and ejection of the notebook thus produced.

Lors de l'engagement de la partie médiane du segment de bande 8 entre les cylindres cannelés 6, le bord d'attaque du segment de bande subit une brusque inversion de mouvement comme illustré par la flèche en trait épais sur la figure 1. Cette inversion de mouvement provoque un coup de fouet de sorte que la cadence de la plieuse est limitée pour éviter une détérioration de la bande de papier. En outre, à la sortie de la plieuse, le cahier réalisé se présente sur la tranche de sorte que pour le conditionnement ultérieur il est nécessaire que le cahier soit tout d'abord reçu par un moulinet qui le dépose ensuite à plat sur un convoyeur en vue d'être acheminé vers un compteur empileur servant à réaliser des paquets en fonction du nombre d'exemplaires demandé par chaque destinataire.When engaging the middle portion of the web segment 8 between the splined rolls 6, the leading edge of the web segment undergoes a sudden reversal of motion as illustrated by the thick line arrow on the web segment. figure 1 . This inversion of motion causes a whiplash so that the rate of the folder is limited to avoid deterioration of the paper web. In addition, at the exit of the folder, the notebook realized is presented on the slice so that for the subsequent conditioning it is necessary that the notebook is first received by a reel which then deposits it flat on a conveyor to be routed to a stacker counter for making packages according to the number of copies requested by each recipient.

OBJET DE L'INVENTIONOBJECT OF THE INVENTION

Un but de l'invention est de proposer un procédé et un dispositif de découpage et de pliage d'une bande de papier multifeuille pouvant fonctionner à une cadence très élevée.An object of the invention is to provide a method and a device for cutting and folding a multifibre paper web capable of operating at a very high rate.

RESUME DE L'INVENTIONSUMMARY OF THE INVENTION

En vue de la réalisation de ce but, on propose selon l'invention un Procédé de découpage et de pliage d'une bande de papier comportant plusieurs feuilles superposées et repliées selon un premier pli , caractérisé en ce qu'il comporte les étapes suivantes

  • effectuer un pliage de la bande de papier de façon alternée selon une direction de pliage perpendiculaire au premier pli pour réaliser un empilage de segments de bande reliés entre eux selon un pliage en accordéon,
  • effectuer un découpage des segments de bande selon une direction perpendiculaire aux segments de bande
With a view to achieving this object, the invention proposes a method for cutting and folding a paper web comprising a plurality of sheets superposed and folded in a first fold, characterized in that it comprises the following steps
  • folding the strip of paper alternately in a folding direction perpendicular to the first fold to make a stack of strip segments interconnected in accordion folding,
  • cutting the web segments in a direction perpendicular to the web segments

Ainsi, lors du pliage en accordéon, les feuilles de papier assemblées ne subissent aucune inversion de mouvement de sorte que le phénomène de coup de fouet est supprimé et la cadence de pliage en accordéon peut donc être très élevée sans risque de détérioration de la bande de papier. En outre, la découpe d'un empilage de segments de bande en accordéon peut être effectuée de façon continue, de sorte que l'opération de découpage n'affecte en aucune façon la cadence de pliage.Thus, when folding accordion, the assembled paper sheets do not undergo any reversal of movement so that the whiplash phenomenon is eliminated and the accordion folding rate can be very high without risk of deterioration of the tape. paper. In addition, the cutting of a stack of accordion band segments can be performed continuously, so that the cutting operation in no way affects the bending rate.

Selon un mode de mise en oeuvre avantageux du procédé selon l'invention, le découpage des segments de bande est effectué entre des lignes de pliage de la bande de préférence à mi-distance de celles-ci. Ainsi, on réalise simultanément deux exemplaires identiques de sorte que la cadence de production des exemplaires se trouve améliorée.According to an advantageous embodiment of the method according to the invention, the cutting of the segments of band is performed between fold lines of the band preferably midway between them. Thus, two identical copies are simultaneously produced so that the rate of production of the copies is improved.

Selon un autre aspect de l'invention, celle-ci concerne un dispositif de découpage et de pliage d'une bande de papier comprenant un organe de pliage comportant deux cylindres de pliage contrarotatifs adjacents l'un à l'autre et comprenant chacun au moins une lame engageante et au moins un jeu de mâchoires de pincement , les cylindres étant montés l'un par rapport à l'autre pour qu'alternativement une lame engageante de l'un des cylindres s'engage entre les mâchoires de pincement de l'autre cylindre de pliage lors d'une rotation des cylindres de pliage, la bande de papier étant disposée pour s'étendre entre les cylindres de pliage ; un organe de découpage disposé en aval de l'organe de pliage par référence à un sens de déplacement de la bande de papier entre les cylindres de pliage ; des inserts montés pour être engagés entre des plis de la bande de papier en aval de l'organe de pliage par référence à un déplacement de la bande de papier entre les cylindres de pliage, caractérisé en ce que les inserts sont commandés pour s'incliner vers le bas en aval de l'organe de découpage et vers le haut en amont de la sortie du dispositif.According to another aspect of the invention, this relates to a device for cutting and folding a paper web comprising a folding member comprising two contrarotating folding cylinders adjacent to each other and each comprising at least one an engaging blade and at least one set of gripping jaws, the cylinders being mounted relative to each other so that alternatively an engaging blade of one of the cylinders engages between the gripping jaws of the another folding cylinder during a rotation of the folding rolls, the paper web being arranged to extend between the folding rolls; a cutting member disposed downstream of the folding member with reference to a direction of movement of the paper web between the folding rolls; inserts mounted to be engaged between folds of the paper web downstream of the folding member with reference to a movement of the paper web between the folding rolls, characterized in that the inserts are controlled to bow downstream of the cutting member and upstream of the outlet of the device.

BREVE DESCRIPTION DES DESSINSBRIEF DESCRIPTION OF THE DRAWINGS

D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture de la description qui suit de différents modes de réalisation particuliers non limitatifs de l'invention, en référence aux figures ci-jointes parmi lesquelles :

  • la figure 2 est une représentation schématique d'un premier mode de réalisation du dispositif de découpage et de pliage selon l'invention,
  • la figure 3 est une vue de dessus du compteur empileur associé au dispositif de découpage et de pliage illustré par la figure 2,
  • la figure 4 est une représentation schématique d'un dispositif comportant un organe de pliage identique à celui de la figure 2, associé à un second mode de réalisation de l'organe de découpage de la figure 2,
  • la figure 5 est une vue schématique analogue à celle de la figure 2 illustrant un autre mode de réalisation de l'organe de pliage.
Other characteristics and advantages of the invention will appear on reading the following description of various particular non-limiting embodiments of the invention, with reference to the attached figures among which:
  • the figure 2 is a schematic representation of a first embodiment of the cutting and folding device according to the invention,
  • the figure 3 is a top view of the stacker counter associated with the cutting and folding device illustrated by the figure 2 ,
  • the figure 4 is a schematic representation of a device comprising a folding member identical to that of the figure 2 , associated with a second embodiment of the cutting member of the figure 2 ,
  • the figure 5 is a schematic view similar to that of the figure 2 illustrating another embodiment of the folding member.

DESCRIPTION DETAILLEE DE L'INVENTIONDETAILED DESCRIPTION OF THE INVENTION

En référence à la figure 2, dans le mode de réalisation illustré, le dispositif est destiné à assurer le découpage et de pliage d'une bande de papier 7, par exemple une bande de papier comportant plusieurs feuilles 30 superposées et repliées selon un premier pli 31.Pour une plus grande clarté du dessin le détail de la structure de la bande 7 n'a été représenté que dans la partie haute de la figure 2. Le dispositif comporte un organe de pliage généralement désigné en 8 comprenant deux cylindres de pliage 9 entraînés en rotation dans des sens contrarotatifs vers la bande de papier 7.With reference to the figure 2 in the illustrated embodiment, the device is intended to cut and fold a paper web 7, for example a paper web having a plurality of sheets 30 superimposed and folded in a first fold 31.For a larger clarity of the drawing the detail of the structure of the strip 7 has been shown only in the upper part of the figure 2 . The device comprises a folding member generally designated 8 comprising two folding cylinders 9 rotated in counter-rotating directions towards the paper strip 7.

Dans le mode de réalisation préféré, les cylindres de pliage 9 sont identiques et comportent chacun quatre gorges 10 disposées à 90° les unes des autres et dans lesquelles sont alternativement montés une lame engageante 11 ou un jeu de mâchoire 12. Les deux cylindres de pliage 9 sont calés l'un par rapport à l'autre pour que lors de la rotation des cylindres de pliage l'une des lames engageantes 11 vienne en regard d'un jeu de mâchoires 12.In the preferred embodiment, the folding cylinders 9 are identical and each comprise four grooves 10 arranged at 90 ° to each other and in which are alternately mounted an engaging blade 11 or a jaw clearance 12. The two folding cylinders 9 are wedged relative to each other so that during the rotation of the folding cylinders one of the engaging blades 11 comes opposite a set of jaws 12.

Lorsqu'une lame engageante 11 passe en regard d'un jeu de mâchoires 12, la bande de papier 7 est repliée sur elle-même perpendiculairement au premier pli 31 et le pli obtenu est introduit entre les mâchoires du jeu de mâchoires 12 qui est simultanément commandé pour pincer le pli au fur et à mesure du retrait de la lame engageante 11.When an engaging blade 11 passes opposite of a set of jaws 12, the paper strip 7 is folded on itself perpendicularly to the first fold 31 and the resulting fold is introduced between the jaws of the jaw set 12 which is simultaneously controlled to pinch the fold as and when measuring engagement blade removal 11.

En raison de l'alternance des plis ainsi réalisés, la bande de papier 7 est donc pliée selon un empilage 13 de segments de bande 14 reliés entre eux selon un pliage en accordéon.Due to the alternation of the folds thus produced, the paper strip 7 is folded in a stack 13 of strip segments 14 interconnected by a folding accordion.

Selon l'invention, le dispositif comporte en outre un organe de découpage 15, par exemple une scie à mouvement alternatif s'étendant selon une direction perpendiculaire aux segments de bande 14 et parallèle aux lignes de pliage 16.According to the invention, the device further comprises a cutting member 15, for example a reciprocating saw extending in a direction perpendicular to the band segments 14 and parallel to the fold lines 16.

Dans le mode de réalisation illustré dans lequel les cylindres de pliage 9 ont un axe horizontal, les segments de bande 14 s'étendent selon un empilage vertical de sorte que lors du découpage par un organe de découpage vertical, les cahiers 17 obtenus tombent par gravité vers la sortie du dispositif de découpage et de pliage.In the illustrated embodiment in which the folding cylinders 9 have a horizontal axis, the band segments 14 extend in a vertical stack so that when cutting by a vertical cutting member, the notebooks 17 obtained fall by gravity towards the exit of the cutting and folding device.

Selon un autre aspect de l'invention, le dispositif comporte un organe de mise en place d'inserts 18 qui sont montés de façon débrayable sur un support flexible 19 entraîné dans le même sens de défilement que l'empilage de segments de bande 14 et commandés pour s'insérer dans l'empilage de segments de bande afin de délimiter une poignée d'exemplaires de cahiers en fonction du nombre d'exemplaires devant former un paquet de taille déterminée pour chaque destinataire.According to another aspect of the invention, the device comprises a member for inserting inserts 18 which are disengageably mounted on a flexible support 19 driven in the same direction of travel as the stack of strip segments 14 and ordered to fit into the stack of tape segments to delimit a handful of copies of notebooks depending on the number of copies to form a package of size determined for each recipient.

De préférence, le mode d'entraînement des inserts 18 est configuré pour qu'en amont de l'organe de découpage 15 l'empilage 13 de segments de bande 14 soit soumis à une compression, par exemple en réalisant en dessous de l'organe de découpage 15 un débrayage des inserts 18 par rapport aux organes d'entraînement 19 et une retenue simultanée de ces mêmes inserts par rapport au châssis du dispositif tandis que les inserts s'étendant au-dessus de l'organe de découpage restent solidaires de l'organe d'entraînement 19.Preferably, the drive mode of the inserts 18 is configured so that upstream of the cutting member 15 the stack 13 of band segments 14 is subjected to compression, for example by realizing below the cutting member 15 a disengagement of the inserts 18 relative to the drive members 19 and a simultaneous retention of these inserts relative to the frame of the device while the inserts extending above the body of the device cutting remain attached to the drive member 19.

De préférence, les inserts 18 sont inclinés vers le bas immédiatement en aval de l'organe de découpage 15, ce qui facilite leur dégagement de l'organe de découpage, puis ils sont au contraire inclinés vers le haut pour favoriser un appui de la ligne de pliage contre des guides 20 juste avant la chute des exemplaires découpés et pliés dans des paniers 21 d'un compteur empileur 22 associé à chaque colonne d'exemplaires découpés.Preferably, the inserts 18 are inclined downstream immediately downstream of the cutting member 15, which facilitates their release from the cutting member, then they are instead inclined upwards to promote a support of the line bending against guides 20 just before the fall of copies cut and folded in baskets 21 of a stacker counter 22 associated with each column of cut copies.

De façon connue en soi, chaque compteur empileur 22 comporte quatre paniers 21 chacun monté pour pivoter par rapport à une plate-forme en croix 23 elle-même montée pour pivoter autour d'un axe vertical afin de pouvoir d'une part faire pivoter chaque panier 21 autour de son axe pour la réalisation de paquets à partir de poignées disposées selon des orientations différentes afin d'équilibrer les épaisseurs résultant du pli, et de faire pivoter la plate-forme afin de disposer un nouveau panier sous la plieuse pendant que le paquet contenu dans un panier défini est évacué vers une machine d'emballage.In a manner known per se, each stacker counter 22 comprises four baskets 21 each mounted for pivoting relative to a cross platform 23 itself mounted to pivot about a vertical axis in order to be able to pivot on the one hand basket 21 around its axis for making packages from handles arranged in different orientations to balance the thicknesses resulting from the fold, and to rotate the platform to have a new basket under the folder while the package contained in a defined basket is evacuated to a packaging machine.

Le dispositif selon l'invention peut également être équipé de dispositifs d'encartage 24 disposés pour introduire des documents à encarter directement à la sortie de l'organe de pliage.The device according to the invention may also be equipped with inserting devices 24 arranged to introduce documents to insert directly at the exit of the folding member.

Le dispositif illustré par la figure 2 comporte un seul organe de découpage 15 assurant une découpe des segments de bande 14 à égale distance des lignes de pliage 16, ce qui correspond à un format nominal des cahiers finalement réalisés. Dans le cas d'un document imprimé selon un format légèrement inférieur au format nominal, le dispositif comporte de préférence deux organes de découpage 15 espacés l'un de l'autre comme illustré par la figure 4, la structure du dispositif de découpage et de pliage étant par ailleurs identique à celle de la figure 2. Les deux organes de découpage 15 réalisent ainsi deux lignes de coupe espacées l'une de l'autre. Moyennant une très faible adaptation du dispositif initial, il est ainsi possible de réaliser des cahiers de formats voisins en éliminant la portion de papier excédentaire.The device illustrated by the figure 2 comprises a single cutting member 15 providing a cutting band segments 14 equidistant from the fold lines 16, which corresponds to a nominal format of the books finally made. In the case of a document printed in a format slightly smaller than the format nominal, the device preferably comprises two cutting members 15 spaced from one another as illustrated by the figure 4 , the structure of the cutting and folding device being otherwise identical to that of the figure 2 . The two cutting members 15 thus make two cutting lines spaced from one another. With a very low adaptation of the initial device, it is thus possible to produce notebooks of similar formats by eliminating the excess paper portion.

La figure 5 illustre un troisième mode de réalisation du dispositif selon l'invention dans lequel les cylindres de pliage 25 comportent chacun huit gorges 10 dont quatre sont disposées à 90° les unes des autres tandis que les quatre autres sont disposées selon des paires à 120° l'une de l'autre. Selon une première configuration des cylindres de pliage 25, les quatre gorges 10 à 90° les unes des autres sont équipées de lames engageantes 11 et de jeux de mâchoires 12 comme illustré par la figure 2, les autres gorges 10 étant recouvertes par un couvercle. Dans cette configuration qui n'est pas illustrée sur la figure 5, le fonctionnement est identique à celui de la figure 2 et on obtient des cahiers d'un format nominal.The figure 5 illustrates a third embodiment of the device according to the invention wherein the folding cylinders 25 each comprise eight grooves 10 of which four are arranged at 90 ° from each other while the other four are arranged in pairs at 120 ° the one of the other. According to a first configuration of the folding cylinders 25, the four grooves 10 at 90 ° to each other are equipped with engaging blades 11 and jaw sets 12 as illustrated by FIG. figure 2 the other grooves 10 being covered by a cover. In this configuration that is not illustrated on the figure 5 , the operation is identical to that of the figure 2 and we obtain notebooks of a nominal size.

Selon la configuration illustrée par la figure 5, trois gorges 10 à 120° les unes par rapport aux autres sont équipées d'une lame engageante 11, tandis que trois gorges 10 décalées de 60° par rapport aux premières sont équipées de jeux de mâchoires 12, les deux dernières gorges restantes étant recouvertes d'un couvercle 28. Avec cette configuration, on obtient des segments de bande 26 ayant une largeur égale aux deux tiers de la largeur nominale illustrée sur la figure 2. De préférence, les inserts 18 sont alors remplacés par des inserts 27 de plus faible largeur que les inserts 18 et les guides 20 sont rapprochés pour assurer un guidage des cahiers de format réduit.According to the configuration illustrated by the figure 5 , three grooves 10 to 120 ° relative to each other are equipped with an engaging blade 11, while three grooves 10 offset by 60 ° with respect to the first are equipped with jaw sets 12, the last two remaining grooves being covered With this configuration, band segments 26 having a width equal to two thirds of the nominal width illustrated on FIG. figure 2 . Preferably, the inserts 18 are then replaced by inserts 27 of smaller width than the inserts 18 and the guides 20 are brought together to provide guidance of notebooks of reduced size.

Bien entendu, l'invention n'est pas limitée aux modes de réalisation décrits et on peut procéder à des variantes de réalisation sans sortir du cadre de l'invention tel que défini par les revendications.Of course, the invention is not limited to the embodiments described and alternative embodiments can be made without departing from the scope of the invention as defined by the claims.

En particulier, bien que l'invention ait été décrite avec des cylindres de pliage comportant chacun quatre gorges 10 ou plus, l'invention peut être réalisée avec des cylindres de pliage comportant chacun deux gorges 10 seulement, disposées de façon diamétralement opposée l'une à l'autre, l'une d'entre elle recevant une lame engageante tandis que l'autre reçoit un jeu de mâchoires 12.In particular, although the invention has been described with folding rolls each having four or more grooves 10, the invention may be realized with folding rolls each having two grooves only, arranged diametrically opposite one another. to the other, one of them receiving an engaging blade while the other receives a set of jaws 12.

Contrairement au mode de réalisation réalisé sur la figure 4 pour lequel un tour de cylindre permet de réaliser quatre exemplaires de cahier, les cylindres à deux gorges 10 seulement ne permettent de réaliser que deux cahiers par tour. Pour une cadence donnée, il est donc nécessaire de faire tourner les cylindres deux fois plus vite.Unlike the embodiment realized on the figure 4 for which a cylinder turn makes it possible to produce four copies of a notebook, the cylinders with two grooves 10 only make it possible to produce only two notebooks per revolution. For a given rate, it is therefore necessary to rotate the cylinders twice as fast.

Bien que dans les différents modes de réalisation l'organe de découpage ait été disposé à mi distance des lignes de pliage, on peut également réaliser le dispositif selon l'invention en disposant l'organe de découpage sur un côté de l'empilage de segments de bande. Dans ce cas, un seul exemplaire de cahier est formé par chaque pli, ce qui constitue un inconvénient du point de vue de la cadence de réalisation des cahiers, mais peut constituer un avantage du point de vue de l'encombrement, les dimensions du dispositif étant alors plus réduites que dans les modes de réalisation illustrés.Although in the various embodiments the cutting member has been placed at a distance from the fold lines, it is also possible to produce the device according to the invention by arranging the cutting member on one side of the stack of segments. band. In this case, a single copy of the notebook is formed by each fold, which is a disadvantage from the point of view of the production rate of the notebooks, but may constitute an advantage from the point of view of the size, the dimensions of the device. being then smaller than in the illustrated embodiments.

Claims (7)

Procédé de découpage et de pliage d'une bande de papier (7) comportant plusieurs feuilles (30) superposées et repliées selon un premier pli (31), caractérisé en ce qu'il comporte les étapes suivantes - effectuer un pliage de la bande de papier (7) de façon alternée selon une direction de pliage perpendiculaire au premier pli (31) pour réaliser un empilage de segments de bande (14, 26) reliés entre eux selon un pliage en accordéon, - effectuer un découpage des segments de bande selon une direction perpendiculaire aux segments de bande (14, 26). Process for cutting and folding a paper web (7) comprising a plurality of sheets (30) superposed and folded in a first fold (31), characterized in that it comprises the following steps - Folding the paper web (7) alternately in a folding direction perpendicular to the first fold (31) to achieve a stack of strip segments (14, 26) interconnected in accordion folding, - Cutting the band segments in a direction perpendicular to the band segments (14, 26). Procédé selon la revendication 1, caractérisé en ce que le découpage des segments de bande est effectué entre des lignes de pliage (16) des segments de bande.Method according to claim 1, characterized in that the cutting of the web segments is performed between fold lines (16) of the web segments. Procédé selon la revendication 2, caractérisé en ce que le découpage est effectué à égale distance des lignes de pliage (16).Method according to claim 2, characterized in that the cutting is carried out at an equal distance from the fold lines (16). Procédé selon la revendication 2, caractérisé en ce que les segments de bande sont découpés selon deux lignes de coupe espacées l'une de l'autre.Method according to claim 2, characterized in that the web segments are cut in two cut lines spaced from one another. Procédé selon la revendication 1, caractérisé en ce qu'il comporte en outre l'étape d'effectuer une compression des segments de bande pendant le découpage des segments de bande.The method of claim 1, characterized in that it further comprises the step of compressing the tape segments while cutting the tape segments. Dispositif de découpage et de pliage d'une bande de papier (7) comprenant un organe de pliage (8) comportant deux cylindres de pliage (9, 25) contrarotatifs adjacents l'un à l'autre et comprenant chacun au moins une lame engageante (11) et au moins un jeu de mâchoires de pincement (12), les cylindres étant montés l'un par rapport à l'autre pour qu'alternativement une lame engageante de l'un des cylindres s'engage entre les mâchoires de pincement (12) de l'autre cylindre de pliage lors d'une rotation des cylindres de pliage, la bande de papier étant disposée pour s'étendre entre les cylindres de pliage ; un organe de découpage (15) disposé en aval de l'organe de pliage par référence à un sens de déplacement de la bande de papier (7) entre les cylindres de pliage ; des inserts (18, 27) montés pour être engagés entre des plis de la bande de papier en aval de l'organe de pliage (13) par référence à un déplacement de la bande de papier (7) entre les cylindres de pliage, caractérisé en ce que les inserts (18) sont commandés pour s'incliner vers le bas en aval de l'organe de découpage et vers le haut en amont de la sortie du dispositif.Device for cutting and folding a paper web (7) comprising a folding member (8) comprising two contrarotating folding cylinders (9, 25) adjacent to each other and each comprising at least one engaging blade (11) and at least one set of gripping jaws (12), the cylinders being mounted relative to each other so that alternatively an engaging blade of one of the cylinders engages between the gripping jaws (12) of the other folding cylinder during a rotation of the folding cylinders the paper web being arranged to extend between the folding rolls; a cutting member (15) disposed downstream of the folding member with reference to a direction of movement of the paper web (7) between the folding rolls; inserts (18, 27) mounted to be engaged between folds of the paper web downstream of the folding member (13) with reference to a movement of the paper web (7) between the folding rolls, characterized in that the inserts (18) are controlled to tilt downstream of the cutting member and upstream of the outlet of the device. Dispositif selon la revendication 6, caractérisé en ce que les inserts (18) sont commandés pour assurer une compression de segments de bande (14) entre l'organe de pliage et l'organe de découpage.Device according to claim 6, characterized in that the inserts (18) are controlled to provide compression of web segments (14) between the folding member and the cutting member.
EP09290927A 2009-12-10 2009-12-10 Method for cutting and folding a paper strip and corresponding device Withdrawn EP2332871A1 (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0294675A2 (en) * 1987-06-10 1988-12-14 OMET S.r.l. A method and device for separating a predetermined number of flat objects, such as sheets of paper
WO2001062651A1 (en) * 2000-02-23 2001-08-30 Fabio Perini S.P.A. Device for and method of folding sheet material

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0294675A2 (en) * 1987-06-10 1988-12-14 OMET S.r.l. A method and device for separating a predetermined number of flat objects, such as sheets of paper
WO2001062651A1 (en) * 2000-02-23 2001-08-30 Fabio Perini S.P.A. Device for and method of folding sheet material

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