EP0148074A2 - Device for turning paper webs in a perfecting printing machine - Google Patents

Device for turning paper webs in a perfecting printing machine Download PDF

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Publication number
EP0148074A2
EP0148074A2 EP84402655A EP84402655A EP0148074A2 EP 0148074 A2 EP0148074 A2 EP 0148074A2 EP 84402655 A EP84402655 A EP 84402655A EP 84402655 A EP84402655 A EP 84402655A EP 0148074 A2 EP0148074 A2 EP 0148074A2
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EP
European Patent Office
Prior art keywords
frame
paper
support
slide
turning
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
EP84402655A
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German (de)
French (fr)
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EP0148074B1 (en
EP0148074A3 (en
Inventor
Raymond François Flaujac
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.)
SEAILLES ET TISON SA
SEAILLES AND TISON
Original Assignee
SEAILLES ET TISON SA
SEAILLES AND TISON
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Publication date
Application filed by SEAILLES ET TISON SA, SEAILLES AND TISON filed Critical SEAILLES ET TISON SA
Publication of EP0148074A2 publication Critical patent/EP0148074A2/en
Publication of EP0148074A3 publication Critical patent/EP0148074A3/en
Application granted granted Critical
Publication of EP0148074B1 publication Critical patent/EP0148074B1/en
Expired legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/02—Conveying or guiding webs through presses or machines
    • B41F13/06—Turning-bar arrangements

Definitions

  • the present invention relates to a paper turning device for back-to-front printing.
  • Such devices are generally known and are intended to be arranged on the paper travel path between two printing groups so that the paper is printed on the urea of its faces, for example the back, in the first group of printing, then either returned by the turning device, and finally printed on its opposite side, for example the front, in the second printing group.
  • the reversal of the sheet is carried out by means of a set of reversal bars which are angularly offset from each other. It is most often a set of four bars, offset at 45 ° from each other, which make it possible to subject the plane of the paper to four successive rotations of 45 °.
  • the known devices however have a certain number of drawbacks since they are non-removable, difficult to access and clean, and that they cannot be adjusted according to the width of the paper to be turned over.
  • the present invention relates to a paper turning device for back-to-front printing which precisely makes it possible to avoid the abovementioned drawbacks.
  • the device comprises a fixed support forming a horizontal slide and extending perpendicular to the path of travel of the paper, and a removable vertical frame supporting the set of turning bars and able to be adjusted in position. and secured to the support.
  • the support slide affects an inverted T-shaped section and the frame is provided at its lower part with at least two nipples each movable vertically under the action of a lever for cause the frame to be attached or detached from the support.
  • the slide support extends over a length greater than twice the maximum width of the paper, so that the frame can be moved between a retracting position where it is outside the path of paper movement and a service position, adjustable according to the width of the paper, where the frame is on the paper travel path.
  • the paper turning device 10 is intended to be placed on the running path of a paper 12 between two printing units 14 and 16.
  • the paper 12 which runs next the direction indicated by the arrow F is printed on one of its faces, for example the back, in the first group 14, is then returned by the device 10 and is then printed on its opposite face, for example the front, in the second group 16.
  • the device 10 comprises a fixed support 18, carried by a frame 20, which forms a horizontal slide and which extends perpendicular to the path of travel of the paper, and a removable vertical frame 22 supporting a set of turning bars and able to be adjusted in position and secured to the support 10.
  • the frame 22 is a generally rectangular frame which comprises a lower arm 24, an upper arm 26 and two vertical uprights 28 and 30.
  • the lower arm 24 is provided with means, which will be described later, allowing the frame to slide in the slide of the support 18 and move it between a retracted position ( Figure 2) and a service position which is itself adjustable ( Figure 4 and Figure 5).
  • the upper arm 26 is provided with rings 32 and 34 which make it possible to lift the frame by means of a lifting device 36 to allow the frame to be placed on different supports on the same printing machine or else on a other printing machine of the same type.
  • the set of turning bars supported by the frame 22 includes a first horizontal deflection roller (this roller is not visible in FIG. 2 because it is hidden by the deflection roller 46 described below), a first oblique bar turning 38, a vertical turning 40, a second turning slash 42, a horizontal turning 44 and a second horizontal turning 46.
  • the two horizontal deflection rollers are supported at the level of the lower arm 24, while the oblique bars 38 and 42 are arranged near the diagonals of the rectangle and that the inversion roller 40 is disposed near the upright 30 and that the turning roller 44 is arranged near the arm 26.
  • the two return rollers, such 46, and the turning rollers 40 and 44 are rollers idly mounted on their respective axes.
  • the roller 40 can, as a variant, be driven at the running speed of the sheet of paper.
  • the bars 38 and 42 are blowing bars, that is to say hollow bars provided with holes and connected to a source of compressed air so as to provide an air mattress around the bars to allow the sliding the sheet of paper.
  • the bar 38, the roller 40, the bar 42 and the roller 44 are arranged successively at 45 ° from one another so as to subject the plane of the sheet of paper to four successive rotations of 45 °.
  • the support 18 comprises a slide 48 which affects an inverted T-shaped section and which opens onto the horizontal surface 50 of the support 18.
  • the slide 48 serves to guide two studs 52 which are provided at the lower part of the frame 22 and which are each vertically movable under the action of a lever 54 to cause the soli darization or separation of the frame 22 on the support 1 8.
  • Each of the handles 54 has an internal thread capable of cooperating with an external thread of the corresponding stud 52.
  • the pin 52 is either raised or lowered, which causes the connection and the separation of the frame and the support respectively.
  • the support 18 extends over a length greater than twice the maximum width of the paper (the paper 12 is shown with its maximum width in Figures 2 and 5 ) so that the frame 22 can be moved between a retracting position (FIG. 2) where it is located outside of the paper travel path and a service position (FIG. 4 or FIG. 5) adjustable according to the width paper, where the frame is on the paper path.
  • the support 18 includes a portion located above the frame 20, below the paper 12, that is to say on the normal path of travel of the paper, and a portion located at the door overhang with respect to the frame 20, this cantilever portion being supported by a forestay 56.
  • the support 18 comprises, at one of its ends, a stop 58 limiting the movement of the frame 22 in the retracted position (cf. FIG. 2) and at its opposite end, a position adjusting member 60 capable of acting moving the frame to adjust the service position (see Figures 4 and 5).
  • the adjusting member 60 comprises a threaded rod 62 directed parallel to the slide of the support, capable of being driven in rotation by a lever 64 and cooperating with a nut 66 which can be secured or detached from the frame 22 (cf. FIG. 7).
  • the frame 22 has for this purpose a housing 68 for receiving the nut 66 and a pivoting lever 70 capable of holding the nut in its housing.
  • the inversion device of the invention is used in the following manner.
  • the frame 22 is transported by means of the lifting device 36 from one support to another, either on the same printing machine, or from one printing machine to another.
  • the member 60 can be operated to adjust the frame to a precise position.
  • This adjustment in position can be facilitated by providing a strip (not shown) on the frame and an index (not shown) on the support.
  • the adjustment in the service position is intended to take account of the width of the width, it being understood that the paper must always be centered relative to the frame and that one of the edges of the paper must always have the same alignment.
  • the inversion device of the invention can thus be easily installed between two printing units to then be placed in an adjustable service position as a function of the width of the paper or in a retracting position. This therefore results in a great flexibility of adaptation since the two printing groups can be used either to make the back-front with different widths, or to make two successive front-to-front printing, the turning device being retracted.

Abstract

La présente invention concerne un dispositif de retournement de papier pour impression verso-recto, apte à être disposé sur le trajet de défilement du papier entre deux groupes d'impression et comportant un ensemble de barres de retournement qui sont décalées angulairement les unes des autres. Le dispositif comprend un support fixe (18) formant glissière horizontale et s'étendant perpendiculairement au trajet de défilement du papier (12), et un cadre vertical amovible (22) supportant l'ensemble de barres de retournement (38, 40, 42, 44) et apte à être réglé en position et solidarisé sur le support. Application à l'imprimerie.The present invention relates to a paper turning device for back-to-front printing, capable of being arranged on the paper running path between two printing groups and comprising a set of turning bars which are angularly offset from each other. The device comprises a fixed support (18) forming a horizontal slide and extending perpendicular to the paper travel path (12), and a removable vertical frame (22) supporting the set of turning bars (38, 40, 42, 44) and able to be adjusted in position and secured to the support. Application to printing.

Description

La présente invention concerne un dispositif de retournement de papier pour impression verso-recto.The present invention relates to a paper turning device for back-to-front printing.

De tels dispositifs sont généralement connus et sont prévus pour être disposés sur le trajet de défilement du papier entre deux groupes d'impression en sorte que le papier soit imprimé sur l'urede ses faces, par exemple le verso, dans le premier groupe d'impression, soit ensuite-retourne par le dispositif de retournement, et soit finalement imprimé sur sa face opposée, par exemple le recto, dans le deuxième groupe d'impression.Such devices are generally known and are intended to be arranged on the paper travel path between two printing groups so that the paper is printed on the urea of its faces, for example the back, in the first group of printing, then either returned by the turning device, and finally printed on its opposite side, for example the front, in the second printing group.

Dans les dispositifs connus, le retournement de la feuille est réalisé au moyen d'un ensemble de barres de retournement qui sont décalées angulairement les unes des autres. Il s'agit le plus souvent d'un ensemble de quatre barres, décalées à 45° les unes des autres, qui permettent de faire subir au plan du papier quatre rotations successives de 45°.In known devices, the reversal of the sheet is carried out by means of a set of reversal bars which are angularly offset from each other. It is most often a set of four bars, offset at 45 ° from each other, which make it possible to subject the plane of the paper to four successive rotations of 45 °.

Les dispositifs connusprésentent toutefois un certain nombre d'inconvénients étant donné qu'ils sont indémontables, d'accès et de nettoyage difficile, et qu'ils ne peuvent pas être réglés en fonction de la largeur du papier à retourner.The known devices however have a certain number of drawbacks since they are non-removable, difficult to access and clean, and that they cannot be adjusted according to the width of the paper to be turned over.

La présente invention concerne un dispositif de retournement de papier pour impression verso-recto qui permet précisément d'éviter les inconvénients précités.The present invention relates to a paper turning device for back-to-front printing which precisely makes it possible to avoid the abovementioned drawbacks.

Selon la caractéristique essentielle de l'invention, le dispositif comprend un support fixe formant glissière horizontale et s'étendant perpendiculairement au trajet de défilement du papier, et un cadre vertical amovible supportant l'ensemble de barres de retournement et apte à être réglé en position et solidarisé sur le support.According to the essential characteristic of the invention, the device comprises a fixed support forming a horizontal slide and extending perpendicular to the path of travel of the paper, and a removable vertical frame supporting the set of turning bars and able to be adjusted in position. and secured to the support.

Dans un mode de réalistion préféré de l'invention, la glissière du support affecte une section en forme de T inversé et le cadre est muni à sa partie inférieure d'au moins deux tétons déplaçables chacun verticalement sous l'action d'une manette pour provoquer la solidarisation ou la désolidarisation du cadre sur le support.In a preferred embodiment of the invention, the support slide affects an inverted T-shaped section and the frame is provided at its lower part with at least two nipples each movable vertically under the action of a lever for cause the frame to be attached or detached from the support.

Dans ce mode de réalisation préféré, le support formant glissière s'étend sur une longueur supérieure au double de la largeur maximale du papier, en sorte que le cadre peut être déplacé entre une position d'escamotage où il se trouve en dehors du trajet de déplacement du papier et une position de service, réglable en fonction de la largeur du papier, où le cadre se trouve sur le trajet de défilement du papier.In this preferred embodiment, the slide support extends over a length greater than twice the maximum width of the paper, so that the frame can be moved between a retracting position where it is outside the path of paper movement and a service position, adjustable according to the width of the paper, where the frame is on the paper travel path.

D'autres caractéristiques et avantages de l'invention seront mieux compris à la lecture de la description détaillée qui suit et qui se réfère aux dessins annexés, sur lesquels :

  • . la figure 1 est une vue schématique de dessus montrant l'implantation du dispositif de l'invention entre deux groupes d'impression successifs ;
  • . la figure 2 est une vue latérale du dispositif de l'invention, ce dernier étant en position d'escamotage;
  • . La figure 3 est une vue de côté du cadre du dispositif de la figure 2 ;
  • . La figure 4 est une vue analogue à la figure 2 montrant le cadre dans la position de service correspondant à la largeur minimale du papier ;
  • . La figure 5 est une vue analogue à celle- de la figure 4 montrant le cadre dans la position de service correspondant à la largeur maximale de papier ;
  • . La figure 6 est une vue en élévation montrant en détail la base du cadre de la figure 3 ; et
  • . La figure 7 est une vue de dessus montrant le réglage en position du cadre sur le support.
Other characteristics and advantages of the invention will be better understood on reading the detailed description which follows and which refers to the appended drawings, in which:
  • . Figure 1 is a schematic top view showing the layout of the device of the invention between two successive printing groups;
  • . Figure 2 is a side view of the device of the invention, the latter being in the retracted position;
  • . Figure 3 is a side view of the frame of the device of Figure 2;
  • . Figure 4 is a view similar to Figure 2 showing the frame in the service position corresponding to the minimum width of the paper;
  • . Figure 5 is a view similar to that of Figure 4 showing the frame in the service position corresponding to the maximum width of paper;
  • . Figure 6 is an elevational view showing in detail the base of the frame of Figure 3; and
  • . Figure 7 is a top view showing the adjustment in position of the frame on the support.

Comme représenté schématiquement sur la figure 1, le dispositif de retournement de papier 10 selon l'invention est destiné à être disposé sur le trajet de défilement d'un papier 12 entre deux groupes d'impression 14 et 16. Le papier 12 qui défile suivant la direction indiquée par la flèche F est imprimé sur l'unede ses faces, par exemple le verso, dans le premier groupe 14, est ensuite retourné par le dispositif 10 et est ensuite imprimé sur sa face opposée, par exemple le recto, dans le deuxième groupe 16.As shown diagrammatically in FIG. 1 , the paper turning device 10 according to the invention is intended to be placed on the running path of a paper 12 between two printing units 14 and 16. The paper 12 which runs next the direction indicated by the arrow F is printed on one of its faces, for example the back, in the first group 14, is then returned by the device 10 and is then printed on its opposite face, for example the front, in the second group 16.

Comme représenté plus particulièrement sur les figures 2, 4 et 5, le dispositif 10 comprend un support fixe 18, porté par un bâti 20, qui forme glissière horizontale et qui s'étend perpendiculairement au trajet de défilement du papier, et un cadre vertical amovible 22 supportant un ensemble de barres de retournement et apte à être réglé en position et solidarisé sur le support 10.As shown more particularly in FIGS. 2, 4 and 5, the device 10 comprises a fixed support 18, carried by a frame 20, which forms a horizontal slide and which extends perpendicular to the path of travel of the paper, and a removable vertical frame 22 supporting a set of turning bars and able to be adjusted in position and secured to the support 10.

Le cadre 22 est un cadre généralement rectangulaire qui comporte un bras inférieur 24, un bras supérieur 26 et deux montants verticaux 28 et 30. Le bras inférieur 24 est muni de moyens, qui seront décrits ultérieurement, permettant de faire glisser le cadre dans la glissière du support 18 et de le déplacer entre une position escamotée (figure 2) et une position dé service qui est elle-même réglable (figure 4 et figure 5).The frame 22 is a generally rectangular frame which comprises a lower arm 24, an upper arm 26 and two vertical uprights 28 and 30. The lower arm 24 is provided with means, which will be described later, allowing the frame to slide in the slide of the support 18 and move it between a retracted position (Figure 2) and a service position which is itself adjustable (Figure 4 and Figure 5).

Le bras supérieur 26 est muni d'anneaux 32 et 34 qui permettent de soulever le cadre au moyen d'un dispositif de levage 36 pour permettre de mettre en place le cadre sur des supports différents sur une même machine d'impression ou bien sur une autre machine d'impression du même type.The upper arm 26 is provided with rings 32 and 34 which make it possible to lift the frame by means of a lifting device 36 to allow the frame to be placed on different supports on the same printing machine or else on a other printing machine of the same type.

L'ensemble de barres de retournement supporté par le cadre 22 comprend un premier rouleau horizontal de renvoi (ce rouleau n'est pas visible sur la figure 2 car il est caché par le rouleau de renvoi 46 décrit plus loin), une première barre oblique de retournement 38, un rouleau vertical de retournement 40, une deuxième barre oblique de retournement 42, un rouleau horizontal de retournement 44 et un second rouleau de renvoi horizontal 46.The set of turning bars supported by the frame 22 includes a first horizontal deflection roller (this roller is not visible in FIG. 2 because it is hidden by the deflection roller 46 described below), a first oblique bar turning 38, a vertical turning 40, a second turning slash 42, a horizontal turning 44 and a second horizontal turning 46.

Comme on peut le voir d'après la figure 2, les deux rouleaux horizontaux de renvoi sont supportés au niveau du bras inférieur 24, tandis que les barres obliques 38 et 42 sont disposées à proximité des diagonales du rectangle et que le rouleau de retournement 40 est disposé à proximité du montant 30 et que le rouleau de retournement 44 est disposé à proximité du bras 26. Les deux rouleaux de renvoi, tels 46, et les rouleaux de retournement 40 et 44 sont des rouleaux montés fous sur leursaxesrespectifs. Le rouleau 40 peut, en variante, être entraîné à la vitesse de défilement de la feuille de papier. En revanche, les barres 38 et 42 sont des barres soufflantes, c'est-à-dire des barres creuses munies de trous et reliées à une source d'air comprimé de manière à ménager un matelas d'air autour des barres pour permettre le glissement de la feuille de papier.As can be seen from FIG. 2, the two horizontal deflection rollers are supported at the level of the lower arm 24, while the oblique bars 38 and 42 are arranged near the diagonals of the rectangle and that the inversion roller 40 is disposed near the upright 30 and that the turning roller 44 is arranged near the arm 26. The two return rollers, such 46, and the turning rollers 40 and 44 are rollers idly mounted on their respective axes. The roller 40 can, as a variant, be driven at the running speed of the sheet of paper. However, the bars 38 and 42 are blowing bars, that is to say hollow bars provided with holes and connected to a source of compressed air so as to provide an air mattress around the bars to allow the sliding the sheet of paper.

La barre 38, le rouleau 40, la barre 42 et le rouleau 44 sont disposés successivement à 45° les uns des autres de manière à faire subir au plan de la feuille de papier quatre rotations successives de 45°.The bar 38, the roller 40, the bar 42 and the roller 44 are arranged successively at 45 ° from one another so as to subject the plane of the sheet of paper to four successive rotations of 45 °.

Comme représenté sur la figure 6, le support 18 comprend une glissière 48 qui affecte une section en forme de T inversé et qui débouche sur la surface horizontale 50 du support 18. La glissière 48 sert de guidage- à deux tétons 52 qui sont prévus à la partie inférieure du cadre 22 et qui sont déplaçables chacun verticalement sous l'action d'une manette 54 pour provoquer la solidarisation ou la désolidarisation du cadre 22 sur le support 18. Chacune des poignées 54 comporte un filetage intérieur apte à coopérer avec un filetage extérieur du téton 52 correspondant. Ainsi, en faisant pivoter la manette 54 dans un sens ou dans l'autre, on fait soit monter, soit descendre le téton 52 ce qui provoque respectivement la solidarisation ou la désolidarisation du cadre et du support.As shown in FIG. 6, the support 18 comprises a slide 48 which affects an inverted T-shaped section and which opens onto the horizontal surface 50 of the support 18. The slide 48 serves to guide two studs 52 which are provided at the lower part of the frame 22 and which are each vertically movable under the action of a lever 54 to cause the soli darization or separation of the frame 22 on the support 1 8. Each of the handles 54 has an internal thread capable of cooperating with an external thread of the corresponding stud 52. Thus, by pivoting the lever 54 in one direction or the other, the pin 52 is either raised or lowered, which causes the connection and the separation of the frame and the support respectively.

Comme on peut le voir d'après les figures 2, 4 et 5, le support 18 s'étend sur une longueur supérieure au double de la largeur maximale du papier (le papier 12 est représenté avec sa largeur maximale sur les figures 2 et 5) en sorte que le cadre 22 peut être déplacé entre une position d'escamotage (figure 2) où il se trouve en dehors du trajet de défilement du papier et une position de service (figure 4 ou figure 5) réglable en fonction de la largeur du papier, où le cadre se trouve sur le trajet de défilemént du papier.As can be seen from Figures 2, 4 and 5, the support 18 extends over a length greater than twice the maximum width of the paper (the paper 12 is shown with its maximum width in Figures 2 and 5 ) so that the frame 22 can be moved between a retracting position (FIG. 2) where it is located outside of the paper travel path and a service position (FIG. 4 or FIG. 5) adjustable according to the width paper, where the frame is on the paper path.

Ainsi, comme le montre la figure 2, le support 18 comporte une portion située au dessus du bâti 20, au dessous du papier 12, c'est-à-dire sur le trajet normal de défilement du papier, et une portion située en porte-à-faux par rapport au bâti 20, cette portion en porte-à-faux étant supportéepar un étai 56.Thus, as shown in FIG. 2, the support 18 includes a portion located above the frame 20, below the paper 12, that is to say on the normal path of travel of the paper, and a portion located at the door overhang with respect to the frame 20, this cantilever portion being supported by a forestay 56.

Le support 18 comporte, à l'une de ses extrémités, une butée 58 limitant le déplacement du cadre 22 dans la position d'escamotage (cf. figure 2) et à son extrémité opposée, un organe de réglage de position 60 apte à agir sur le-déplacement du cadre pour le réglage de la position de service (cf. figures 4 et 5).The support 18 comprises, at one of its ends, a stop 58 limiting the movement of the frame 22 in the retracted position (cf. FIG. 2) and at its opposite end, a position adjusting member 60 capable of acting moving the frame to adjust the service position (see Figures 4 and 5).

L'organe de réglage 60 comporte une tige filetée 62 dirigée parallèlement à la glissière du support, apte à être entraîné en rotation par une manette 64 et coopérant avec un écrou 66 qui peut être solidarisé ou désolidarisé du cadre 22 (cf. figure 7). Le cadre 22 comporte à cet effet un logement 68 pour recevoir l'écrou 66 et un levier pivotant 70 apte à maintenir l'écrou dans son logement.The adjusting member 60 comprises a threaded rod 62 directed parallel to the slide of the support, capable of being driven in rotation by a lever 64 and cooperating with a nut 66 which can be secured or detached from the frame 22 (cf. FIG. 7). The frame 22 has for this purpose a housing 68 for receiving the nut 66 and a pivoting lever 70 capable of holding the nut in its housing.

Le dispositif de retournement de l'invention est utilisé de la manière suivante. On transporte le cadre 22 au moyen du dispositif de levage 36 d'un support à un autre, soit sur une même machine d'impression, soit d'une machine d'impression à une autre. On s'arrange pour faire descendre le cadre sur le support dans une position voisine de la position d'escamotage où les deux tétons 52 peuvent pénétrer dans la glissière 48 grâce à des élargissement prévus à cet effet à des endroits appropriés. Une fois le cadre mis en place sur le support 18 il peut soit être mis dans la position d'escamotage représentée sur la figure 2, soit dans une position de service telle que celle représentée sur les figures 4 et 5. Pour amener le cadre dans la position de service, il suffit de le déplacer dans la glissière en l'amenant sur la gauche (figures 4 et 5) de telle sorte que la tige filetée 62 de l'organe de manoeuvre 60 puisse s'engager dans l'écrcu 66. Lorsque cet engagement est réalisé, on peut manoeuvrer l'organe 60 pour régler le cadre en position précise. Ce réglage en position peut être facilité en prévoyant une réglette (non représentée) sur le cadre et un index(non représenté) sur le support. Le réglage en position de service est destiné à tenir compte de la largeur de la laize étant entendu que le papier doit être toujours centré par rapport au cadre et que l'un des bords du papier doit avoir toujours le même alignement. Ainsi si l'on considère les figures 4 et 5 on remarquera que le bord droit du papier, à savoir le bord 72 du papier de largeur minimale (figure 4) ou le bord 74 du papier de largeur maximale (figure 5) conserve toujours la même position quelle que soit la largeur du papier. Le réglage en position du cadre permet de conserver toujours le parfait alignement du bord droit du papier avec l'alignement prévu. Une fois que le réglage en position est obtenu, on solidarise le cadre et le support en serrant les deux manettes 54.The inversion device of the invention is used in the following manner. The frame 22 is transported by means of the lifting device 36 from one support to another, either on the same printing machine, or from one printing machine to another. We arrange to lower the frame on the support in a position close to the retracting position where the two pins 52 can penetrate the slide 48 by means of widening provided for this purpose at appropriate locations. Once the frame is in place on the support 18, it can either be put in the retracted position shown in FIG. 2, or in a service position such as that shown in FIGS. 4 and 5. To bring the frame into the service position, just move it in the slide by bringing it to the left (Figures 4 and 5) so that the threaded rod 62 of the operating member 60 can engage in the lock 66 When this engagement is achieved, the member 60 can be operated to adjust the frame to a precise position. This adjustment in position can be facilitated by providing a strip (not shown) on the frame and an index (not shown) on the support. The adjustment in the service position is intended to take account of the width of the width, it being understood that the paper must always be centered relative to the frame and that one of the edges of the paper must always have the same alignment. So if we consider Figures 4 and 5 we will notice that the right edge of the paper, namely the edge 72 of the width paper minimum (Figure 4) or the edge 74 of the maximum width paper (Figure 5) always keeps the same position regardless of the width of the paper. Adjusting the frame position allows you to always keep the right edge of the paper perfectly aligned with the intended alignment. Once the position adjustment is obtained, the frame and the support are secured by tightening the two levers 54.

Le dispositif de retournement de l'invention peut ainsi être facilement installé entre deux groupes d'impression pour être ensuite mis dans une position de service réglable en fonction de la largeur du papier ou dans une position d'escamotage. Il en résulte ainsi une grande souplesse d'adaptation puisque les deux groupes d'impression peuvent être utilisés soit pour faire du verso-recto avec des largeurs différentes, soit pour faire deux impressions recto recto successives, le dispositif de retournement étant escamoté.The inversion device of the invention can thus be easily installed between two printing units to then be placed in an adjustable service position as a function of the width of the paper or in a retracting position. This therefore results in a great flexibility of adaptation since the two printing groups can be used either to make the back-front with different widths, or to make two successive front-to-front printing, the turning device being retracted.

Claims (7)

1. Dispositif de retournement de papier pour impression verso-recto, apte à être disposé sur le trajet de défilement du papier entre deux groupes d'impression et comportant un ensemble de barres de retournement qui sont décalées angulairement les unes des autres, caractérisé par le fait qu'il comprend un support fixe (18) formant glissière horizontale et s'étendant perpendiculairement au trajet de défilement du papier (12), et un cadre vertical amovible (22) supportant l'ensemble de barres de retournement (38,40,42,44) et apte à être réglé en position et solidarisé sur le support.1. Paper turning device for back-to-front printing, able to be placed on the paper running path between two printing groups and comprising a set of turning bars which are angularly offset from each other, characterized by the that it comprises a fixed support (18) forming a horizontal slide and extending perpendicular to the paper travel path (12), and a removable vertical frame (22) supporting the set of turning bars (38,40, 42,44) and able to be adjusted in position and secured to the support. 2. Dispositif selon la revendication 1, caractérisé par le fait que la glissière (48) du support (18) affecte une section en forme de T inversé et que le cadre (22) est muni à sa partie inférieure d'au moins deux tétons (52) déplaçables chacun verticalement sous l'action d'une manette (54) pour provoquer la solidarisation ou la désolidarisation du cadre (22) sur le support (18).2. Device according to claim 1, characterized in that the slide (48) of the support (18) affects an inverted T-shaped section and that the frame (22) is provided at its lower part with at least two pins (52) each movable vertically under the action of a lever (54) to cause the connection or separation of the frame (22) on the support (18). 3. Dispositif selon l'une des revendications 1 et 2, caractérisé par le fait que le support (18) formant glissière s'étend sur une longueur supérieure au double de la largeur maximale du papier, en sorte que le cadre (22) peut être déplacé entre une position d'escamotage où il se trouve en dehors du trajet de défilement du papier (12) et une position de service, réglableen fonction de la largeur du papier, où le cadre (22) se trouve sur le trajet de défilement du papier.3. Device according to one of claims 1 and 2, characterized in that the support (18) forming a slide extends over a length greater than twice the maximum width of the paper, so that the frame (22) can be moved between a retracting position where it is outside the paper travel path (12) and a service position, adjustable as a function of the width of the paper, where the frame (22) is on the travel path paper. 4. Dispositif selon la revendication 3, caractérisé par le fait que le support (22) formant glissière comporte, à l'une de ses extrémités, une butée (58) limitant le déplacement du cadre (22) dans la position d'escamotage et, à son extrémité opposée, un organe de réglage de position (60) apte à agir sur le déplacement du cadre pour le réglage de la position de service.4. Device according to claim 3, characterized in that the support (22) forming a slide comprises, at one of its ends, a stop (58) limiting the movement of the frame (22) in the retracted position and , at its opposite end, a position adjusting member (60) capable of acting on the displacement of the frame for adjusting the service position. 5. Dispositif selon la revendication 4, caractérisé par le fait que l'organe de réglage de position (60) comporte une tige filetée (62) dirigée parallèlement à la glissière du support (18), apte à être entraînée en rotation par une manette (64) et coopérant avec un écrou (66) qui peut être solidarisé ou désolidarisé du cadre (22).5. Device according to claim 4, characterized in that the position adjustment member (60) comprises a threaded rod (62) directed parallel to the slide of the support (18), capable of being driven in rotation by a lever (64) and cooperating with a nut (66) which can be attached to or detached from the frame (22). 6. Dispositif selon la revendication 5, caractérisé par le fait que le cadre (22) comporte un logement (68) pour recevoir l'écrou (66) et un levier pivotant (70) apte à maintenir l'écrou dans son logement.6. Device according to claim 5, characterized in that the frame (22) comprises a housing (68) for receiving the nut (66) and a pivoting lever (70) capable of holding the nut in its housing. 7. Dispositif selon l'une des revendications 1 à 6, caractérisé par le fait que le cadre (22) est muni d'anneaux de préhension (32, 34) à sa partie supérieure.7. Device according to one of claims 1 to 6, characterized in that the frame (22) is provided with gripping rings (32, 34) at its upper part.
EP84402655A 1984-01-03 1984-12-19 Device for turning paper webs in a perfecting printing machine Expired EP0148074B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8400028 1984-01-03
FR8400028A FR2557504B1 (en) 1984-01-03 1984-01-03 PAPER TURNING DEVICE FOR SIDE-SIDED PRINTING

Publications (3)

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EP0148074A2 true EP0148074A2 (en) 1985-07-10
EP0148074A3 EP0148074A3 (en) 1985-08-07
EP0148074B1 EP0148074B1 (en) 1988-06-01

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EP84402655A Expired EP0148074B1 (en) 1984-01-03 1984-12-19 Device for turning paper webs in a perfecting printing machine

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US (1) US4610198A (en)
EP (1) EP0148074B1 (en)
DE (1) DE3471609D1 (en)
ES (1) ES294403Y (en)
FR (1) FR2557504B1 (en)

Cited By (2)

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US4863087A (en) * 1988-08-05 1989-09-05 The Kohler Coating Machinery Corporation Guide apparatus for elongated flexible web
WO1992015513A1 (en) * 1991-03-11 1992-09-17 Siemens Nixdorf Informationssysteme Aktiengesellschaft Deviating device for deviating a printing web between two high-speed printers

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JPH08451B2 (en) * 1992-07-22 1996-01-10 株式会社東京機械製作所 Rotary press and paper feeding unit of the rotary press
DE4335473C2 (en) * 1993-10-18 2001-07-12 Oce Printing Systems Gmbh Turning device for a tape-shaped recording medium
DE59400220D1 (en) * 1994-08-19 1996-05-23 Siemens Nixdorf Inf Syst Turning device for tape-shaped recording media
US5845187A (en) * 1994-10-06 1998-12-01 Oce Printing Systems Gmbh Turn-over means for band-shaped recording media
IL121564A (en) * 1997-08-18 2001-06-14 Scitex Corp Ltd Duplex printing press with a single printing cylinder per color
DE19841171A1 (en) * 1998-09-09 2000-05-25 Koenig & Bauer Ag Turning bar arrangement
EP1299242B1 (en) * 2000-07-11 2011-10-12 Textilma Ag Installation for continuously producing an imprinted textile strip, especially a label strip
US6615717B1 (en) * 2001-06-18 2003-09-09 Xerox Corporation Symmetrical parallel duplex paper path device
US6736350B2 (en) * 2001-10-25 2004-05-18 Energy Saving Products And Sales Corp. Web control matrix with selectable web orientation
US20050127125A1 (en) * 2003-10-16 2005-06-16 Young William O. Method and apparatus for laterally positioning a moving web
US20140230674A1 (en) * 2013-02-20 2014-08-21 Kurt M. Sanger System for mounting a flexographic printing plate
CN103395283A (en) * 2013-08-06 2013-11-20 江阴市汇通包装机械有限公司 Set-off frame

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DE560956C (en) * 1931-02-25 1932-10-08 Heinrich Wolff Rotary printing machine for paper webs
US2283597A (en) * 1940-10-15 1942-05-19 Hoe & Co R Associating mechanism for printing machines
GB726070A (en) * 1952-07-09 1955-03-16 Goss Printing Press Co Ltd Improvements in or relating to angle bar arrangements for printing presses

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4863087A (en) * 1988-08-05 1989-09-05 The Kohler Coating Machinery Corporation Guide apparatus for elongated flexible web
WO1992015513A1 (en) * 1991-03-11 1992-09-17 Siemens Nixdorf Informationssysteme Aktiengesellschaft Deviating device for deviating a printing web between two high-speed printers

Also Published As

Publication number Publication date
ES294403U (en) 1986-10-01
US4610198A (en) 1986-09-09
FR2557504A1 (en) 1985-07-05
ES294403Y (en) 1987-06-16
FR2557504B1 (en) 1987-06-19
DE3471609D1 (en) 1988-07-07
EP0148074B1 (en) 1988-06-01
EP0148074A3 (en) 1985-08-07

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