EP1985447A1 - Folding device and corresponding printing press - Google Patents

Folding device and corresponding printing press Download PDF

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Publication number
EP1985447A1
EP1985447A1 EP08103407A EP08103407A EP1985447A1 EP 1985447 A1 EP1985447 A1 EP 1985447A1 EP 08103407 A EP08103407 A EP 08103407A EP 08103407 A EP08103407 A EP 08103407A EP 1985447 A1 EP1985447 A1 EP 1985447A1
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EP
European Patent Office
Prior art keywords
folding
blade
rotor
folding device
blades
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
EP08103407A
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German (de)
French (fr)
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EP1985447B1 (en
Inventor
Jilani Chrigui
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.)
Goss International Montataire SA
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Goss International Montataire SA
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Publication date
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Publication of EP1985447A1 publication Critical patent/EP1985447A1/en
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Publication of EP1985447B1 publication Critical patent/EP1985447B1/en
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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
    • B65H45/00—Folding thin material
    • B65H45/12—Folding articles or webs with application of pressure to define or form crease lines
    • B65H45/16—Rotary folders
    • B65H45/161—Flying tuck folders

Definitions

  • Document is known DE 102 10 030 a rotary folding device comprising a rotor on which is arranged a single folding blade. The only folding blade is rotated around this rotor.
  • a fixed central gear with respect to a frame, an intermediate gear and a toothed gear fixed to the blade serve to drive the blade in rotation with respect to the rotor.
  • the number of revolutions of the rotor of this device must be equal to the number of copies to be folded in a given period of time.
  • the blade is rotated about its own axis between a retracted position and an extended position. This radial position change relative to the rotor leads to a dynamic imbalance of the folding device.
  • the invention aims to overcome these disadvantages and to provide a folding device that increases the production speed of the folding device and thus facilitate dynamic balancing.
  • the invention also relates to a printing press, particularly rotary, comprising a folding device, characterized in that the folding device is a device as defined above.
  • FIG. 1 On the Figure 1 is shown in perspective a folding device according to the invention, designated by the general reference 2.
  • the folding device 2 is used to fold a series of flat products, such as signatures C 1 , C 2 , C 3 , C n .
  • the folding device 2 is part of a printing press, especially rotary, not shown.
  • the folding device 2 comprises a folding table 4 adapted to support the signatures C 1 , C 2 , C 3 , C n to fold in a horizontal position before folding.
  • the folding device 2 further comprises a fixed frame 6 which is fixed with respect to the folding table 4.
  • the folding device 2 is further provided with a conveyor 8 adapted pure convey the succession of signatures C 1 , C 2 , C 3 , C n to the folding table 4.
  • This conveyor 8 consists of a multitude of strips conveying 9.
  • the folding device 2 also comprises a pair of folding rollers 10, 12 arranged below the folding table 4 and defining a slot folding 14 between them. Also, at the location of the folding slot 14, the folding table 4 has an opening 16 for passage. This opening passage 16 allows the signatures C 1 , C 2 , C 3 , C n to cross the folding table 4 during folding.
  • the conveyor 8 is adapted to convey the signatures to fold C 1 , C 2 , C 3 , C n according to a transport direction T.
  • the folding device 2 is provided with a rotor 18 free in rotation with respect to the frame 6 about a central axis XX.
  • the rotor 18 is supported by the frame 6 by means of two shafts 20, 22.
  • the first shaft 20 is housed in two bearings 24, 26, while the second shaft 22 is housed in a connecting sleeve 28.
  • the connecting sleeve 28 is fixed to the rotor of a drive motor 30 adapted to drive the rotor 18 relative to the frame 6 in rotation around the central axis XX.
  • the folding device 2 also comprises a first folding blade 32 and a second folding blade 34 of flat products to be folded.
  • the folding device 2 is provided with first displacement means 36 of the first folding blade 32 with respect to the rotor 18 between a first retracted passage position (see FIG. Figure 3 ) and a first fold out position (see Figure 5 ) passing through an intermediate position ( Figure 4 ).
  • the folding device 2 is also provided with second moving means 38 of the second folding blade 34 with respect to the rotor 18 between a second retracted passage position (see FIG. Figure 3 ) and a second folding output position (see Figure 5 ).
  • the folding blades 32, 34 are arranged vertically.
  • the first folding blade 32 defines a first blade plane P1-P1 while the second folding blade 34 defines a second blade plane P2-P2.
  • the central axis XX extends parallel to the blade planes P1-P1 and P2-P2. In addition, the central axis XX extends parallel to the transport direction T.
  • the first displacement means 36 comprising a first blade holder 40 on which is fixed the first folding blade 32.
  • This first blade holder 40 is rotatable relative to the rotor 18 about a first axis of rotation of the carrier. AR1-AR1 blade.
  • the first blade holder 40 is housed in the rotor 18 by means of two needle bearings 42, 44 and a ball bearing 46.
  • the first moving means 36 further comprises first drive means 48 of the first blade carrier 40 about the axis rotation AR1-AR1.
  • the second displacement means 38 comprise a second blade holder 50 on which is fixed the second folding blade 34, this second blade holder 50 being rotatable relative to the rotor 18 about an axis of rotation AR2-AR2.
  • the second displacement means 38 further comprise drive means 52 of the blade holder 50 about its axis of rotation AR2-AR2.
  • the first drive means 48 are provided with a first blade holder gear 54 which is rotationally fixed relative to the first blade holder 40.
  • the first drive means 48 also comprise a first intermediate gearwheel 56 ( see Figures 3 to 5 ).
  • This first intermediate gearwheel 56 is rotatable about an own axis Al1-Al1 relative to the rotor 18.
  • This first gear 56 meshes with a central gear 58 which is fixed coaxially with the axis XX on the frame 6 .
  • the second drive means 52 comprise a second blade holder toothed wheel 60 fixedly fixed in rotation to the second blade holder 50, and a second intermediate gearwheel 62 rotatable about a second intermediate axis of rotation. AI2-AI2 with respect to the rotor 18. This second intermediate gearwheel 62 meshes with the second toothed wheel of the blade carrier 60 and with the central gear wheel 58.
  • the blades 32, 34, the blade carriers 40, 50 and the intermediate gearwheels 56, 62 are uniformly distributed over the circumference of the rotor 18 around the central axis XX.
  • the associated elements are located diametrically opposite one another. This arrangement leads to a dynamic equilibrium during the rotation of the rotor 18 about its axis XX.
  • the first 36 and second 38 moving means are adapted to move the first 32 and second 34 folding blades synchronously between the associated retracted position and the associated output position. As shown on the Figure 5 when the first folding blade 32 is in its extended position, the second folding blade 34 is also in its extended position. Likewise, when the first folding blade 32 is in its retracted position ( Figure 3 ), the second folding blade 34 is also in its retracted position.
  • This arrangement further increases the dynamic balance of the folding device 2.
  • each blade 32, 34 is less than the distance between the central axis of rotation XX and the associated axis of rotation AR1, AR2.
  • the folding blades 32, 34 do not touch during their rotation about their respective axis of rotation AR1, AR2.
  • the folding device according to the invention operates as follows:
  • the conveyor 8 conveys the signatures to fold C 1 , C 2 , C 3 on the folding table 4, and this with a frequency F.
  • the blades 32, 34 are in their retracted position (see Figure 3 ) allowing the passage of the signature on the table 4.
  • the rotor 18 is driven around its central axis XX by the motor 30 at a frequency which corresponds to half the frequency F.
  • one of the folding blades 32, 34 pushes the signature C 1 , C 2 , C 3, C n through the opening 16 in the folding slot 14 thus folding this signature.
  • the folded signature is driven by the folding rollers 10, 12 downward (see FIG. Figure 5 ).
  • the rotation frequency of the rotor 18 is less than the routing frequency F of the signatures C 1 , C 2 , C 3 , C n .
  • the rotational speed of the rotor 18 is 30,000 t / h.
  • the rotational speed of the rotor 18 may be low.
  • This second embodiment differs from that previously described by the following. Similar elements bear the same references.
  • each of the folding blades 32, 34 In the folding position, each of the folding blades 32, 34 extends horizontally, and in its retracted position, each folding blade 32, 34 extends vertically.
  • the folding device 2 comprises two signature supports to be folded. These supports are unrepresented tables and are of the same design as the folding table 4 with transport cords, but they are arranged vertically to receive the bending signatures horizontally. These supports replace the folding table 4 described above.
  • Each of the signature media is adapted to maintain a signature in a vertical position prior to folding. The signatures to be folded are held facing each other so that the two folding blades 32, 34 can simultaneously come into contact with the associated signature C 1 , C 2 .
  • the folding device further comprises two pairs of folding rollers 10A, 12A, 10B, 12B, each of which delimits a folding slot 14A, 14B.
  • the folding device 2 further comprises switching means 70 adapted to switch the signatures to fold alternately to one and the other of the supports.
  • the folding device 2 with more than two folding blades, for example three folding blades.
  • the folding blades are also evenly distributed on the rotor 18.
  • the folding blades are spaced 120 ° from each other.
  • the means for driving the folding blades between their retracted and extended position can be achieved by means other than toothed wheels, for example by electromagnetic means such as electro-magnets.

Landscapes

  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)

Abstract

The device (2) has a rotor (18) freely rotating around a central axis (XX), and a flat product folding blade placed on the rotor. A displacement unit (36) displaces the folding blade with respect to the rotor between a retracted passage position and a folding outlet position. Another flat product folding blade (34) is mounted on the rotor. Another displacement unit (38) displaces the folding blade (34) with respect to rotor between the retracted passage position and the folding outlet position.

Description

La présente invention concerne un dispositif de pliage de produits plats, notamment de signatures, comprenant

  • un rotor libre en rotation autour d'un axe central,
  • une première lame de pliage d'un des produits plats disposés sur le rotor,
  • des premiers moyens de déplacement de la première lame de pliage par rapport au rotor entre une première position rétractée de passage et une première position sortie de pliage.
The present invention relates to a device for folding flat products, particularly signatures, comprising
  • a free rotor rotating about a central axis,
  • a first folding blade of one of the flat products arranged on the rotor,
  • first means for moving the first folding blade with respect to the rotor between a first retracted position of passage and a first folded out position.

On connaît du document DE 102 10 030 un dispositif de pliage rotatif comprenant un rotor sur lequel est disposée une seule lame de pliage. La seule lame de pliage est montée en rotation autour de ce rotor. Une roue dentée centrale fixe par rapport à un bâti, une roue dentée intermédiaire et une roue dentée fixée à la lame servent à entraîner la lame en rotation par rapport au rotor.Document is known DE 102 10 030 a rotary folding device comprising a rotor on which is arranged a single folding blade. The only folding blade is rotated around this rotor. A fixed central gear with respect to a frame, an intermediate gear and a toothed gear fixed to the blade serve to drive the blade in rotation with respect to the rotor.

Le nombre de tours du rotor de ce dispositif doit être égal au nombre des exemplaires à plier dans un laps de temps donné.The number of revolutions of the rotor of this device must be equal to the number of copies to be folded in a given period of time.

En outre, la lame est entraînée en rotation autour de son axe propre entre une position rétractée et une position sortie. Ce changement de position radial par rapport au rotor conduit à un déséquilibre dynamique du dispositif de pliage.In addition, the blade is rotated about its own axis between a retracted position and an extended position. This radial position change relative to the rotor leads to a dynamic imbalance of the folding device.

L'invention a pour but de pallier ces inconvénients et de proposer un dispositif de pliage qui permette d'augmenter la vitesse de production du dispositif de pliage et de faciliter ainsi l'équilibrage dynamique.The invention aims to overcome these disadvantages and to provide a folding device that increases the production speed of the folding device and thus facilitate dynamic balancing.

A cet effet, l'invention a pour objet un dispositif de pliage du type précité, caractérisé en ce que le dispositif de pliage comporte

  • une deuxième lame de pliage d'un des produits plats disposée sur le rotor et
  • des deuxièmes moyens de déplacement de la deuxième lame de pliage par rapport au rotor entre une deuxième position rétractée de passage et une deuxième position sortie de pliage.
Selon des modes particuliers de réalisation, le dispositif de pliage selon l'invention comporte l'une ou plusieurs des caractéristiques suivantes :
  • toutes les lames de pliage sont réparties uniformément autour de l'axe central ;
  • les premier et deuxième moyens de déplacement sont adaptés pour déplacer les première et deuxième lames de pliage de manière synchrone entre la position rétractée et la position sortie de la lame associée, de telle sorte que, lorsque l'une des lames de pliage est dans sa position rétractée, chacune des lames de pliage est dans sa position rétractée et lorsque l'une des lames de pliage est dans sa position sortie, chacune des lames de pliage est dans sa positon sortie ;
  • chaque lame de pliage s'étend selon un plan de lame et l'axe central s'étend parallèlement aux plans de lame ;
  • chacun des moyens de déplacement comprend
  • un porte-lame sur lequel est fixée la lame de pliage associée, le porte-lame étant mobile en rotation par rapport au rotor autour d'un axe de rotation de porte-lame et
  • des moyens d'entraînement du porte-lame autour de l'axe de rotation de porte-lame ;
  • les moyens d'entraînement du ou de chaque porte-lame comprennent
    • . une roue dentée centrale fixe, et
    • . une roue dentée de porte-lame fixée sur le porte-lame associé et en liaison d'entraînement avec la roue dentée centrale ;
  • les moyens d'entraînement du ou de chaque porte-lame comprennent une roue dentée intermédiaire disposée sur le rotor et étant mobile en rotation autour d'un axe intermédiaire, cette roue dentée intermédiaire étant en prise avec le porte-lame associé ;
  • le dispositif de pliage comprend un bâti fixe, et le rotor est mobile en rotation par rapport à ce bâti ;
  • le dispositif de pliage comprend une table de pliage adaptée pour supporter les produits plats à plier avant le pliage dans une position horizontale, et, dans leur position de pliage, les première et deuxième lames de pliage sont disposées verticalement ;
  • chaque lame de pliage s'étend dans sa position de pliage horizontalement, et le dispositif de pliage comprend deux supports d'un produit à plier, chaque support étant adapté pour maintenir le produit plat à plier dans une position verticale avant le pliage ; et
  • le dispositif de pliage comprend des moyens d'aiguillage adaptés pour aiguiller des produits à plier alternativement vers l'un et l'autre des deux supports.
For this purpose, the subject of the invention is a folding device of the aforementioned type, characterized in that the folding device comprises
  • a second folding blade of one of the flat products disposed on the rotor and
  • second means for moving the second folding blade with respect to the rotor between a second retracted passage position and a second folded exit position.
According to particular embodiments, the folding device according to the invention comprises one or more of the following characteristics:
  • all the folding blades are uniformly distributed around the central axis;
  • the first and second moving means are adapted to move the first and second folding blades synchronously between the retracted position and the extended position of the associated blade, so that when one of the folding blades is in its retracted position, each of the folding blades is in its retracted position and when one of the folding blades is in its extended position, each of the folding blades is in its output position;
  • each folding blade extends along a blade plane and the central axis extends parallel to the blade planes;
  • each of the means of displacement comprises
  • a blade holder on which is fixed the associated folding blade, the blade holder being rotatable relative to the rotor about a blade holder rotation axis and
  • means for driving the blade holder around the axis of rotation of the blade holder;
  • the drive means of the or each blade holder comprise
    • . a stationary center gear, and
    • . a blade holder toothed wheel fixed to the associated blade holder and drivingly connected to the central gear;
  • the drive means of the or each blade holder comprises an intermediate gear disposed on the rotor and being rotatable about an intermediate axis, the intermediate gear being engaged with the associated blade holder;
  • the folding device comprises a fixed frame, and the rotor is rotatable relative to this frame;
  • the folding device comprises a folding table adapted to support the flat products to be folded before folding in a horizontal position, and in their folding position the first and second folding blades are arranged vertically;
  • each folding blade extends in its folding position horizontally, and the folding device comprises two supports of a product to be folded, each support being adapted to hold the flat product to be folded in a vertical position before folding; and
  • the folding device comprises switching means adapted to switch products to fold alternately to one and the other of the two supports.

L'invention concerne également une presse d'impression, notamment rotative, comprenant un dispositif de pliage, caractérisé en ce que le dispositif de pliage est un dispositif tel que défini ci-dessus.The invention also relates to a printing press, particularly rotary, comprising a folding device, characterized in that the folding device is a device as defined above.

L'invention sera mieux comprise à la lecture de la description qui va suivre, donnée uniquement à titre d'exemple et faite en se référant aux dessins, sur lesquels :

  • la Figure 1 est une vue schématique en perspective d'un dispositif de pliage selon un premier mode de réalisation de l'invention, le bâti et le rotor étant omis ;
  • la Figure 2 est une vue en coupe verticale du dispositif de pliage selon le plan P-P de la Figure 1 ;
  • la Figure 3 est une vue en coupe axiale du dispositif de la Figure 2 ;
  • les Figures 4 et 5 sont des vues en coupe axiale analogue à celle de la Figure 3, le dispositif étant dans une position intermédiaire et une position de pliage ; et
  • la Figure 6 est une vue schématique en perspective d'un dispositif de pliage selon un deuxième mode de réalisation de l'invention.
The invention will be better understood on reading the description which follows, given solely by way of example and with reference to the drawings, in which:
  • the Figure 1 is a schematic perspective view of a folding device according to a first embodiment of the invention, the frame and the rotor being omitted;
  • the Figure 2 is a vertical sectional view of the folding device according to the plane PP of the Figure 1 ;
  • the Figure 3 is an axial sectional view of the device of the Figure 2 ;
  • the Figures 4 and 5 are views in axial section similar to that of the Figure 3 the device being in an intermediate position and a folding position; and
  • the Figure 6 is a schematic perspective view of a folding device according to a second embodiment of the invention.

Sur la Figure 1 est représenté en perspective un dispositif de pliage selon l'invention, désigné par la référence générale 2.On the Figure 1 is shown in perspective a folding device according to the invention, designated by the general reference 2.

Le dispositif de pliage 2 est utilisé pour plier une succession de produits plats, telles que des signatures C1, C2, C3, Cn. Le dispositif de pliage 2 fait partie d'une presse d'impression, notamment rotative, non représentée.The folding device 2 is used to fold a series of flat products, such as signatures C 1 , C 2 , C 3 , C n . The folding device 2 is part of a printing press, especially rotary, not shown.

Le dispositif de pliage 2 comprend une table de pliage 4 adaptée pour supporter les signatures C1, C2, C3, Cn à plier dans une position horizontale avant le pliage. Le dispositif de pliage 2 comprend en outre un bâti fixe 6 qui est fixé par rapport à la table de pliage 4.The folding device 2 comprises a folding table 4 adapted to support the signatures C 1 , C 2 , C 3 , C n to fold in a horizontal position before folding. The folding device 2 further comprises a fixed frame 6 which is fixed with respect to the folding table 4.

Le dispositif de pliage 2 est en outre muni d'un convoyeur 8 adapté pur acheminer la succession des signatures C1, C2, C3, Cn à la table de pliage 4. Ce convoyeur 8 est constitué d'une multitude de bandes de convoyage 9.The folding device 2 is further provided with a conveyor 8 adapted pure convey the succession of signatures C 1 , C 2 , C 3 , C n to the folding table 4. This conveyor 8 consists of a multitude of strips conveying 9.

Le dispositif de pliage 2 comporte également une paire de rouleaux de pliage 10, 12 disposés en-dessous de la table de pliage 4 et définissant une fente de pliage 14 entre eux. Egalement, à l'emplacement de la fente de pliage 14, la table de pliage 4 comporte une ouverture 16 de passage. Cette ouverture de passage 16 permet aux signatures C1, C2, C3, Cn de traverser la table de pliage 4 lors du pliage.The folding device 2 also comprises a pair of folding rollers 10, 12 arranged below the folding table 4 and defining a slot folding 14 between them. Also, at the location of the folding slot 14, the folding table 4 has an opening 16 for passage. This opening passage 16 allows the signatures C 1 , C 2 , C 3 , C n to cross the folding table 4 during folding.

Le convoyeur 8 est adapté pour acheminer les signatures à plier C1, C2, C3, Cn selon une direction de transport T. Comme ceci ressort plus particulièrement de la Figure 2, le dispositif de pliage 2 est muni d'un rotor 18 libre en rotation par rapport au bâti 6 autour d'un axe central X-X. Le rotor 18 est supporté par le bâti 6 au moyen de deux arbres 20, 22. Le premier arbre 20 est logé dans deux roulements 24, 26, tandis que le deuxième arbre 22 est logé dans une douille de liaison 28. La douille de liaison 28 est fixée au rotor d'un moteur d'entraînement 30 adapté pour entraîner le rotor 18 par rapport au bâti 6 en rotation autour de l'axe central X-X.The conveyor 8 is adapted to convey the signatures to fold C 1 , C 2 , C 3 , C n according to a transport direction T. As this is more particularly apparent from the Figure 2 , the folding device 2 is provided with a rotor 18 free in rotation with respect to the frame 6 about a central axis XX. The rotor 18 is supported by the frame 6 by means of two shafts 20, 22. The first shaft 20 is housed in two bearings 24, 26, while the second shaft 22 is housed in a connecting sleeve 28. The connecting sleeve 28 is fixed to the rotor of a drive motor 30 adapted to drive the rotor 18 relative to the frame 6 in rotation around the central axis XX.

Le dispositif de pliage 2 comporte également une première lame de pliage 32 et une deuxième lame de pliage 34 des produits plats à plier. Le dispositif de pliage 2 est muni de premiers moyens de déplacement 36 de la première lame de pliage 32 par rapport au rotor 18 entre une première position rétractée de passage (voir Figure 3) et une première position sortie de pliage (voir Figure 5) en passant par une position intermédiaire (Figure 4). Le dispositif de pliage 2 est aussi muni de deuxièmes moyens de déplacement 38 de la deuxième lame de pliage 34 par rapport au rotor 18 entre une deuxième position rétractée de passage (voir Figure 3) et une deuxième position de sortie de pliage (voir Figure 5).The folding device 2 also comprises a first folding blade 32 and a second folding blade 34 of flat products to be folded. The folding device 2 is provided with first displacement means 36 of the first folding blade 32 with respect to the rotor 18 between a first retracted passage position (see FIG. Figure 3 ) and a first fold out position (see Figure 5 ) passing through an intermediate position ( Figure 4 ). The folding device 2 is also provided with second moving means 38 of the second folding blade 34 with respect to the rotor 18 between a second retracted passage position (see FIG. Figure 3 ) and a second folding output position (see Figure 5 ).

Comme ceci est visible sur la Figure 5, dans la position de pliage, les lames de pliage 32, 34 sont disposées verticalement.As this is visible on the Figure 5 in the folding position, the folding blades 32, 34 are arranged vertically.

Comme ceci est visible sur les Figures 3 et 5, la première lame de pliage 32 définit un premier plan de lame P1-P1 tandis que la deuxième lame de pliage 34 définit un deuxième plan de lame P2-P2. L'axe central X-X s'étend parallèlement aux plans de lame P1-P1 et P2-P2. En outre, l'axe central X-X s'étend parallèlement à la direction de transport T.As this is visible on the Figures 3 and 5 the first folding blade 32 defines a first blade plane P1-P1 while the second folding blade 34 defines a second blade plane P2-P2. The central axis XX extends parallel to the blade planes P1-P1 and P2-P2. In addition, the central axis XX extends parallel to the transport direction T.

Les premiers moyens de déplacement 36 comprenant un premier porte-lame 40 sur lequel est fixé la première lame de pliage 32. Ce premier porte-lame 40 est mobile en rotation par rapport au rotor 18 autour d'un premier axe de rotation de porte-lame AR1-AR1. A cet effet, le premier porte-lame 40 est logé dans le rotor 18 au moyen de deux roulements à aiguilles 42, 44 et d'un roulement à billes 46. Les premiers moyens de déplacement 36 comprennent en outre des premiers moyens d'entraînement 48 du premier porte-lame 40 autour de l'axe de rotation AR1-AR1.The first displacement means 36 comprising a first blade holder 40 on which is fixed the first folding blade 32. This first blade holder 40 is rotatable relative to the rotor 18 about a first axis of rotation of the carrier. AR1-AR1 blade. For this purpose, the first blade holder 40 is housed in the rotor 18 by means of two needle bearings 42, 44 and a ball bearing 46. The first moving means 36 further comprises first drive means 48 of the first blade carrier 40 about the axis rotation AR1-AR1.

Les deuxièmes moyens de déplacement 38 comprennent un deuxième porte-lame 50 sur lequel est fixée la deuxième lame de pliage 34, ce deuxième porte-lame 50 étant mobile en rotation par rapport au rotor 18 autour d'un axe de rotation AR2-AR2. Les deuxièmes moyens de déplacement 38 comprennent en outre des moyens d'entraînement 52 du porte-lame 50 autour de son axe de rotation AR2-AR2.The second displacement means 38 comprise a second blade holder 50 on which is fixed the second folding blade 34, this second blade holder 50 being rotatable relative to the rotor 18 about an axis of rotation AR2-AR2. The second displacement means 38 further comprise drive means 52 of the blade holder 50 about its axis of rotation AR2-AR2.

Les premiers moyens d'entraînement 48 sont munis d'une première roue dentée de porte-lame 54 qui est solidaire en rotation par rapport au premier porte-lame 40. Les premiers moyens d'entraînement 48 comprennent aussi une première roue dentée intermédiaire 56 (voir Figures 3 à 5). Cette première roue dentée intermédiaire 56 est mobile en rotation autour d'un axe propre Al1-Al1 par rapport au rotor 18. Cette première roue dentée 56 engrène avec une roue dentée centrale 58 qui est fixée coaxialement à l'axe X-X sur le bâti 6.The first drive means 48 are provided with a first blade holder gear 54 which is rotationally fixed relative to the first blade holder 40. The first drive means 48 also comprise a first intermediate gearwheel 56 ( see Figures 3 to 5 ). This first intermediate gearwheel 56 is rotatable about an own axis Al1-Al1 relative to the rotor 18. This first gear 56 meshes with a central gear 58 which is fixed coaxially with the axis XX on the frame 6 .

De même, les deuxièmes moyens d'entraînement 52 comprennent une deuxième roue dentée de porte-lame 60 fixée solidairement en rotation au deuxième porte-lame 50, et une deuxième roue dentée intermédiaire 62 mobile en rotation autour d'un deuxième axe de rotation intermédiaire AI2-AI2 par rapport au rotor 18. Cette deuxième roue dentée intermédiaire 62 engrène d'une part avec la deuxième roue dentée de porte-lame 60, et d'autre part avec la roue dentée centrale 58.Similarly, the second drive means 52 comprise a second blade holder toothed wheel 60 fixedly fixed in rotation to the second blade holder 50, and a second intermediate gearwheel 62 rotatable about a second intermediate axis of rotation. AI2-AI2 with respect to the rotor 18. This second intermediate gearwheel 62 meshes with the second toothed wheel of the blade carrier 60 and with the central gear wheel 58.

Comme ceci est particulièrement bien visible sur les Figures 3 à 5, les lames 32, 34, les portes-lames 40, 50 et les roues dentées intermédiaires 56, 62 sont réparties uniformément sur la circonférence du rotor 18 autour de l'axe central X-X. En l'occurrence, les éléments associés sont situés diamétralement opposés l'un par rapport à l'autre. Cette disposition conduit à un équilibre dynamique lors de la rotation du rotor 18 autour de son axe X-X. Aussi, les premier 36 et deuxième 38 moyens de déplacement sont adaptés pour déplacer les première 32 et deuxième 34 lames de pliage de manière synchrone entre la position rétractée associée et la position de sortie associée. Comme représenté sur la Figure 5, lorsque la première lame de pliage 32 est dans sa position sortie, la deuxième lame de pliage 34 est également dans sa position sortie. De même, lorsque la première lame de pliage 32 est dans sa position rétractée (Figure 3), la deuxième lame de pliage 34 est également dans sa position rétractée.As this is particularly visible on the Figures 3 to 5 the blades 32, 34, the blade carriers 40, 50 and the intermediate gearwheels 56, 62 are uniformly distributed over the circumference of the rotor 18 around the central axis XX. In this case, the associated elements are located diametrically opposite one another. This arrangement leads to a dynamic equilibrium during the rotation of the rotor 18 about its axis XX. Also, the first 36 and second 38 moving means are adapted to move the first 32 and second 34 folding blades synchronously between the associated retracted position and the associated output position. As shown on the Figure 5 when the first folding blade 32 is in its extended position, the second folding blade 34 is also in its extended position. Likewise, when the first folding blade 32 is in its retracted position ( Figure 3 ), the second folding blade 34 is also in its retracted position.

Cette disposition augmente encore l'équilibre dynamique du dispositif de pliage 2.This arrangement further increases the dynamic balance of the folding device 2.

Comme ceci est visible sur la Figure 5, la largeur radiale L1, L2 de chaque lame 32, 34 est inférieure à la distance entre l'axe central de rotation X-X et l'axe de rotation associé AR1, AR2. Ainsi les lames de pliage 32, 34 ne se touchent pas lors de leur rotation autour de leur axe de rotation AR1, AR2 respectif.As this is visible on the Figure 5 , the radial width L1, L2 of each blade 32, 34 is less than the distance between the central axis of rotation XX and the associated axis of rotation AR1, AR2. Thus the folding blades 32, 34 do not touch during their rotation about their respective axis of rotation AR1, AR2.

Le dispositif de pliage selon l'invention fonctionne de la manière suivante :The folding device according to the invention operates as follows:

Le convoyeur 8 achemine les signatures à plier C1, C2, C3 sur la table de pliage 4, et ceci avec un fréquence F. Pendant ce temps d'acheminement, les lames 32, 34 se trouvent dans leur position rétractée (voir Figure 3) permettant le passage de la signature sur la table 4. Le rotor 18 est entraîné autour de son axe central X-X par le moteur 30 à une fréquence qui correspond à la moitié de la fréquence F. Lorsqu'une des signatures C1, C2, C3, Cn se trouve sur la table 4 au-dessus de l'ouverture 16, l'une des lames de pliage 32, 34 pousse la signature C1, C2, C3, Cn à travers l'ouverture 16 dans la fente de pliage 14 ainsi pliant cette signature. La signature pliée est entraînée par les rouleaux de pliage 10, 12 vers le bas (voir Figure 5).The conveyor 8 conveys the signatures to fold C 1 , C 2 , C 3 on the folding table 4, and this with a frequency F. During this routing time, the blades 32, 34 are in their retracted position (see Figure 3 ) allowing the passage of the signature on the table 4. The rotor 18 is driven around its central axis XX by the motor 30 at a frequency which corresponds to half the frequency F. When one of the signatures C 1 , C 2 , C 3, C n is on the table 4 above the opening 16, one of the folding blades 32, 34 pushes the signature C 1 , C 2 , C 3, C n through the opening 16 in the folding slot 14 thus folding this signature. The folded signature is driven by the folding rollers 10, 12 downward (see FIG. Figure 5 ).

On conçoit que la fréquence de rotation du rotor 18 est inférieure à la fréquence d'acheminement F des signatures C1, C2, C3, Cn. Par exemple, pour une vitesse de production de 60 000 exemplaires par heure, la vitesse de rotation du rotor 18 est de 30 000 t/h.It is conceivable that the rotation frequency of the rotor 18 is less than the routing frequency F of the signatures C 1 , C 2 , C 3 , C n . For example, for a production speed of 60,000 copies per hour, the rotational speed of the rotor 18 is 30,000 t / h.

Ainsi, pour une vitesse de production donnée, la vitesse de rotation du rotor 18 peut être faible.Thus, for a given production speed, the rotational speed of the rotor 18 may be low.

Sur la Figure 6 est représenté un deuxième mode de réalisation du dispositif de pliage selon l'invention.On the Figure 6 is shown a second embodiment of the folding device according to the invention.

Ce deuxième mode de réalisation diffère de celui précédemment décrit par ce qui suit. Les éléments analogues portent les mêmes références.This second embodiment differs from that previously described by the following. Similar elements bear the same references.

Dans la position de pliage, chacune des lames de pliage 32, 34 s'étend horizontalement, et dans sa position rétractée, chaque lame de pliage 32, 34 s'étend verticalement.In the folding position, each of the folding blades 32, 34 extends horizontally, and in its retracted position, each folding blade 32, 34 extends vertically.

De plus, le dispositif de pliage 2 comprend deux supports de signatures à plier. Ces supports sont des tables non représentées et sont de même conception que la table de pliage 4 avec des cordons de transport, mais elles sont disposées verticalement pour recevoir le pliage des signatures à l'horizontal. Ces supports remplacent la table de pliage 4 précédemment décrite. Chacun des supports de signatures est adapté pour maintenir une signature en position verticale avant le pliage. Les signatures à plier sont maintenues en vis-à-vis de telle sorte que les deux lames de pliage 32, 34 peuvent entrer simultanément en contact avec la signature C1, C2 associée.In addition, the folding device 2 comprises two signature supports to be folded. These supports are unrepresented tables and are of the same design as the folding table 4 with transport cords, but they are arranged vertically to receive the bending signatures horizontally. These supports replace the folding table 4 described above. Each of the signature media is adapted to maintain a signature in a vertical position prior to folding. The signatures to be folded are held facing each other so that the two folding blades 32, 34 can simultaneously come into contact with the associated signature C 1 , C 2 .

Le dispositif de pliage comprend en outre deux paires de rouleaux de pliage 10A, 12A, 10B, 12B dont chacune délimite une fente de pliage 14A, 14B.
Le dispositif de pliage 2 comprend en outre des moyens d'aiguillage 70 adaptés pour aiguiller les signatures à plier alternativement vers l'un et l'autre des supports.The folding device further comprises two pairs of folding rollers 10A, 12A, 10B, 12B, each of which delimits a folding slot 14A, 14B.
The folding device 2 further comprises switching means 70 adapted to switch the signatures to fold alternately to one and the other of the supports.

Ainsi, pour une rotation complète du rotor 18, deux signatures Cn, Cn+1 sont pliées en même temps. La fréquence de rotation du rotor 18 est donc un quart de la fréquence d'acheminement F des signatures. De plus, grâce au pliage simultané, les forces exercées sur le dispositif de pliage 2 sont symétriques, ainsi améliorant la qualité du pliage.Thus, for a complete rotation of the rotor 18, two signatures C n , C n + 1 are folded at the same time. The frequency of rotation of the rotor 18 is therefore a quarter of the routing frequency F of the signatures. Moreover, thanks to the simultaneous folding, the forces exerted on the folding device 2 are symmetrical, thus improving the quality of the folding.

En variante, il est possible de munir le dispositif de pliage 2 avec plus de deux lames de pliage, par exemple de trois lames de pliage. Dans ce cas, les lames de pliage sont également régulièrement réparties sur le rotor 18. Dans le cas d'un dispositif de pliage à trois lames, les lames de pliage sont espacées de 120° les unes des autres.Alternatively, it is possible to provide the folding device 2 with more than two folding blades, for example three folding blades. In this case, the folding blades are also evenly distributed on the rotor 18. In the case of a folding device with three blades, the folding blades are spaced 120 ° from each other.

Egalement, les moyens d'entraînement des lames de pliage entre leur position rétractée et sortie peuvent être réalisés par d'autres moyens que des roues dentées, par exemple par des moyens électromagnétiques tels que des électro-ai mants.Also, the means for driving the folding blades between their retracted and extended position can be achieved by means other than toothed wheels, for example by electromagnetic means such as electro-magnets.

Claims (12)

Dispositif de pliage (2) de produits plats (C1, C2, C3), notamment de signatures, comprenant - un rotor (18) libre en rotation autour d'un axe central (X-X), - une première lame de pliage (32) d'un des produits plats disposée sur le rotor (18), - des premiers moyens de déplacement (36) de la première lame de pliage (32) par rapport au rotor (18) entre une première position rétractée de passage et une première position sortie de pliage, caractérisé en ce que le dispositif de pliage comporte - une deuxième lame de pliage (34) d'un des produits plats disposée sur le rotor (18) et - des deuxièmes moyens de déplacement (38) de la deuxième lame de pliage (34) par rapport au rotor (18) entre une deuxième position rétractée de passage et une deuxième position sortie de pliage. Folding device (2) for flat products (C 1 , C 2 , C 3 ), in particular of signatures, comprising a rotor (18) free to rotate about a central axis (XX), a first folding blade (32) of one of the flat products disposed on the rotor (18), first moving means (36) of the first folding blade (32) with respect to the rotor (18) between a first retracted position of passage and a first folded out position, characterized in that the folding device comprises a second folding blade (34) of one of the flat products disposed on the rotor (18) and - Second moving means (38) of the second folding blade (34) relative to the rotor (18) between a second retracted position of passage and a second folded out position. Dispositif de pliage selon la revendication 1, caractérisé en ce que toutes les lames de pliage (32, 34) sont réparties uniformément autour de l'axe central (X-X).Folding device according to claim 1, characterized in that all the folding blades (32, 34) are uniformly distributed around the central axis (XX). Dispositif de pliage selon la revendication 1 ou 2, caractérisé en ce que les premier (36) et deuxième (38) moyens de déplacement sont adaptés pour déplacer les première (32) et deuxième (34) lames de pliage de manière synchrone entre la position rétractée et la position sortie de la lame (32, 34) associée, de telle sorte que, lorsque l'une des lames de pliage (32, 34) est dans sa position rétractée, chacune des lames de pliage est dans sa position rétractée et lorsque l'une des lames de pliage est dans sa position sortie, chacune des lames de pliage est dans sa positon sortie.Folding device according to claim 1 or 2, characterized in that the first (36) and second (38) moving means are adapted to move the first (32) and second (34) folding blades synchronously between the position retracted and the extended position of the associated blade (32, 34), so that when one of the folding blades (32, 34) is in its retracted position, each of the folding blades is in its retracted position and when one of the folding blades is in its extended position, each of the folding blades is in its output position. Dispositif de pliage selon l'une quelconque des revendications précédentes, caractérisé en ce que chaque lame de pliage (32, 34) s'étend selon un plan de lame (P1-P1, P2-P2) et l'axe central (X-X) s'étend parallèlement aux plans de lame.Folding device according to any one of the preceding claims, characterized in that each folding blade (32, 34) extends along a blade plane (P1-P1, P2-P2) and the central axis (XX) extends parallel to the blade planes. Dispositif de pliage selon l'une quelconque des revendications précédentes, caractérisé en ce que chacun des moyens de déplacement (36, 38) comprend - un porte-lame (40, 50) sur lequel est fixée la lame de pliage (32, 34) associée, le porte-lame (40, 50) étant mobile en rotation par rapport au rotor (18) autour d'un axe de rotation de porte-lame (AR1-AR1, AR2-AR2) et - des moyens d'entraînement (48, 52) du porte-lame (40, 50) autour de l'axe de rotation de porte-lame (AR1-AR1, AR2-AR2). Folding device according to one of the preceding claims, characterized in that each of the displacement means (36, 38) comprises - a blade holder (40, 50) on which is fixed the folding blade (32, 34) associated, the blade holder (40, 50) being rotatable relative to the rotor (18) about an axis blade rotation (AR1-AR1, AR2-AR2) and - Drive means (48, 52) of the blade holder (40, 50) around the blade holder rotation axis (AR1-AR1, AR2-AR2). Dispositif de pliage selon la revendication 5, caractérisé en ce que les moyens d'entraînement (48, 52) du ou de chaque porte-lame (40, 50) comprennent - une roue dentée centrale fixe (58), et - une roue dentée de porte-lame (54, 60) fixée sur le porte-lame (40, 50) associé et en liaison d'entraînement avec la roue dentée centrale (58). Folding device according to claim 5, characterized in that the drive means (48, 52) of the or each blade holder (40, 50) comprises a fixed central gear (58), and - A blade carrier toothed wheel (54, 60) fixed on the associated blade holder (40, 50) and in driving connection with the central gear (58). Dispositif de pliage selon la revendication 6, caractérisé en ce que les moyens d'entraînement (48, 52) du ou de chaque porte-lame (40, 50) comprennent une roue dentée intermédiaire (56, 62) disposée sur le rotor (18) et étant mobile en rotation autour d'un axe intermédiaire (Al1-Al1, Al2-Al2), cette roue dentée intermédiaire étant en prise avec le porte-lame (40, 50) associé.Folding device according to claim 6, characterized in that the drive means (48, 52) of the or each blade holder (40, 50) comprise an intermediate gear (56, 62) disposed on the rotor (18). ) and being rotatable about an intermediate axis (Al1-Al1, Al2-Al2), this intermediate gear being engaged with the associated blade holder (40, 50). Dispositif de pliage selon l'une quelconque des revendications 1 à 7, caractérisé en ce qu'il comprend un bâti fixe (6), et en ce que le rotor (18) est mobile en rotation par rapport à ce bâti (6).Folding device according to any one of claims 1 to 7, characterized in that it comprises a fixed frame (6), and in that the rotor (18) is rotatable relative to this frame (6). Dispositif de pliage selon la revendication 8, caractérisé en ce qu'il comprend une table de pliage (4) adaptée pour supporter les produits plats (C1, C2, C3) à plier avant le pliage dans une position horizontale, et en ce que, dans leur position de pliage, les première et deuxième lames de pliage (32, 34) sont disposées verticalement.A folding device according to claim 8, characterized in that it comprises a folding table (4) adapted to support the flat products (C 1, C 2, C 3) to be folded prior to folding in a horizontal position, and that, in their folding position, the first and second folding blades (32, 34) are arranged vertically. Dispositif de pliage selon la revendication 8, caractérisé en ce que, chaque lame de pliage (32, 34) s'étend dans sa position de pliage horizontalement, et en ce que le dispositif de pliage comprend deux supports d'un produit à plier, chaque support étant adapté pour maintenir le produit plat à plier dans une position verticale avant le pliage.Folding device according to claim 8, characterized in that each folding blade (32, 34) extends in its folding position horizontally, and in that the folding device comprises two supports of a product to be folded, each support being adapted to hold the flat product to fold in a vertical position before folding. Dispositif de pliage selon la revendication 10, caractérisé en ce qu'il comprend des moyens d'aiguillage (70) adaptés pour aiguiller des produits à plier (C1, C2, C3, C4) alternativement vers l'un et l'autre des deux supports.Folding device according to claim 10, characterized in that it comprises switching means (70) adapted to switch products to be folded (C 1 , C 2 , C 3 , C 4 ) alternately to the one and the other of the two supports. Presse d'impression, notamment rotative, comprenant un dispositif de pliage, caractérisé en ce que le dispositif de pliage est un dispositif selon l'une quelconque des revendications précédentes.Printing press, in particular a rotary press, comprising a folding device, characterized in that the folding device is a device according to any one of the preceding claims.
EP08103407A 2007-04-27 2008-04-07 Folding device and corresponding printing press Not-in-force EP1985447B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0754752A FR2915423B1 (en) 2007-04-27 2007-04-27 FOLDING DEVICE AND CORRESPONDING PRINTING PRESS

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EP1985447A1 true EP1985447A1 (en) 2008-10-29
EP1985447B1 EP1985447B1 (en) 2010-12-15

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US (1) US20080272531A1 (en)
EP (1) EP1985447B1 (en)
JP (1) JP2008273740A (en)
CN (1) CN101306775B (en)
DE (1) DE602008003945D1 (en)
FR (1) FR2915423B1 (en)

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Publication number Priority date Publication date Assignee Title
US7850588B2 (en) * 2007-09-26 2010-12-14 Goss International Americas, Inc Folder with common chopper
JP4506836B2 (en) * 2008-01-14 2010-07-21 富士ゼロックス株式会社 Folding device, post-processing apparatus using the same, and recording material processing apparatus

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US5653429A (en) * 1993-12-24 1997-08-05 Koenig & Bauer Aktiengesellschaft Cylinder folding apparatus
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US20050103215A1 (en) * 2002-02-26 2005-05-19 Igor Janzen Folding appliances

Also Published As

Publication number Publication date
FR2915423B1 (en) 2010-12-10
CN101306775B (en) 2013-06-05
DE602008003945D1 (en) 2011-01-27
US20080272531A1 (en) 2008-11-06
FR2915423A1 (en) 2008-10-31
JP2008273740A (en) 2008-11-13
CN101306775A (en) 2008-11-19
EP1985447B1 (en) 2010-12-15

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