EP0095423B1 - Variable-size offset printing apparatus - Google Patents

Variable-size offset printing apparatus Download PDF

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Publication number
EP0095423B1
EP0095423B1 EP83401042A EP83401042A EP0095423B1 EP 0095423 B1 EP0095423 B1 EP 0095423B1 EP 83401042 A EP83401042 A EP 83401042A EP 83401042 A EP83401042 A EP 83401042A EP 0095423 B1 EP0095423 B1 EP 0095423B1
Authority
EP
European Patent Office
Prior art keywords
cassette
cylinder
frame
horizontal
support
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.)
Expired
Application number
EP83401042A
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German (de)
French (fr)
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EP0095423A1 (en
Inventor
Georges Edouard Armelin
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.)
Machines Chambon SA
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Machines Chambon SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Machines Chambon SA filed Critical Machines Chambon SA
Priority to AT83401042T priority Critical patent/ATE23130T1/en
Publication of EP0095423A1 publication Critical patent/EP0095423A1/en
Application granted granted Critical
Publication of EP0095423B1 publication Critical patent/EP0095423B1/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
    • B41F7/00—Rotary lithographic machines
    • B41F7/02—Rotary lithographic machines for offset printing
    • B41F7/04—Rotary lithographic machines for offset printing using printing units incorporating one forme cylinder, one transfer cylinder, and one impression cylinder, e.g. for printing on webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/44—Arrangements to accommodate interchangeable cylinders of different sizes to enable machine to print on areas of different sizes

Definitions

  • the present invention relates to a variable format offset printing apparatus.
  • offset printing devices include an inking device and a wetting device for applying a layer of ink and a layer of a wetting solution, in general water, to the surface of minus a touch cylinder itself in contact with a plate cylinder.
  • a blanket cylinder is mounted tangent to the plate cylinder for printing on a traveling web between the blanket cylinder and a counter cylinder applied under pressure against the previous one.
  • a printing device of this kind is described in French patent FR-A-2 350 198 of the applicant.
  • This device intended for successive printing in several colors on the same tablecloth, comprises several superimposed printing assemblies, each of these printing assemblies comprising a plate cylinder and a blanket cylinder mounted tangent to each other. other in the same horizontal plane.
  • the pairs of plate and blanket cylinders are thus superimposed and they are all carried by a frame which can be moved in the transverse direction, that is to say perpendicular to the direction of travel of the printed web, to be removed from the frame of the device and be replaced by another similar frame bearing plates corresponding to a new impression.
  • Such an apparatus if it has indisputable advantages as regards the convenience of replacing the plate cylinders, is however not suitable for printing according to different formats which requires relatively frequent replacements of the plate cylinders, depending on the format of the desired print.
  • the present invention aims to remedy these drawbacks by providing a printing device provided with very simple means allowing an easy and rapid change of the plate cylinder and the blanket cylinder in the case of a format change, as well as a easy cleaning of the offset plate, and an easy change of this plate or even of the blanket if the latter is worn.
  • this variable format offset printing apparatus comprising a frame formed by two front and rear longitudinal uprights, this frame carrying at least one touching cylinder receiving a layer of ink from an inking device and a layer of wetting solution from a wetting device, a plate cylinder tangent to the touch cylinder, a blanket cylinder tangent to the plate cylinder and a counter cylinder mounted on a movable support to be able to be applied under pressure against the blanket cylinder, the tablecloth to be printed passing between this blanket cylinder and the counterpart cylinder, the plate cylinder and the blanket cylinder being rotatably mounted between two vertical and longitudinal flanges connected together by crosspieces and forming with these a cassette movable transversely, that is to say perpendicular to the direction of travel of the printed web, and which can be removed from the frame of the device through an opening provided in the front longitudinal upright of the frame, the front longitudinal upright of the frame, two transverse upper rails extending between the two uprights of the frame of the device and to which the cassette is
  • the printing device allows a very easy exit from a cassette provided with a plate cylinder and a blanket cylinder, for a change of format. Once this cassette has been pulled outside the device, it can either be taken over and handled by an appropriate lifting device or else placed on a mobile carriage carrying another cassette which must be substituted for the one previously used.
  • the cassette can also remain on the support, once removed, to allow a quick change of the printing plate and / or the blanket or for cleaning the plate.
  • the apparatus also comprises means ensuring an automatic pressure setting of the plate cylinder of a cassette, when the latter has been introduced inside.
  • the movement is entered into the cassette by means of a drive pinion mounted on the rear upright of the frame and which is connected in engagement with a pinion secured to the shaft. of the blanket cylinder, which is permanently coupled with a pinion secured to the cylinder shaft plate holder.
  • the blanket cylinder operates, as the case may be, in motor or in brake, which would cause, at the location of the coupling between the plate cylinder and the blanket cylinder, a sliding relative to the play between the teeth of the gears in engagement, where an imprecision of the impression.
  • the fact that the movement takes place, in the apparatus according to the invention, from the blanket cylinder, makes it possible to completely avoid such imprecision.
  • this also makes it possible to have a constant sheet speed, for a constant speed of rotation of the drive motor, whatever the format. In other words, the installed motor power is constant for the various printing formats.
  • the pressure setting of the plate cylinder of the cassette against the touching cylinder or cylinders takes place by pivoting the cassette, around one of the upper transverse rails forming a pivot axis, and this under the action of jacks carried by the two uprights of the frame and exerting their forces on the vertical edges of the two longitudinal flanges of the cassette which are adjacent to the other transverse upper rail.
  • the pivoting movement of the cassette is limited by adjustable stops on which the upper edges of the vertical and longitudinal flanges of the cassette bear, these stops defining the key in contact between the plate cylinder and the touching cylinder or cylinders, otherwise said the crushing of these.
  • the offset printing apparatus shown in the drawing comprises a frame consisting essentially of two longitudinal anterior 1 and posterior 2 uprights between which the different cylinders of the printing apparatus extend horizontally.
  • the terms “longitudinal” and “transverse” mean respectively “parallel” and “perpendicular” to the direction of travel of the printed web.
  • the frame 1, 2 carries an inkwell 3 which distributes the ink by means of a number of equalizing and sliding cylinders designated as a whole by 4. These cylinders bring the ink with three touch rollers 5, 6 and 7.
  • a wetting device 10 is also provided for supplying a wetting solution, generally water, to the plate via the touch rolls.
  • the two touch cylinders 5 and 6 are mounted in fixed positions on the frame while the third touch cylinder 7 is mounted mobile on the frame so that, whatever the format, these three touch cylinders are all tangent to the plate cylinder 8.
  • the two plate cylinders 8 and blanket 9 are rotatably mounted on a cassette 11 which forms an independent assembly and which is movable relative to the frame 1, 2 of the device, in the transverse direction.
  • This cassette 11 essentially comprises two vertical and longitudinal flanges, namely an anterior flange 12 and a posterior flange 13 braced by crosspieces 20 (FIG. 3) and between which the plate cylinder 8 and the blanket cylinder 9 extend.
  • the cylinders 8 and 9 are carried by shafts mounted for rotation in bearings carried by the two transverse flanges 12, 13 and respectively integral, at their rear ends, with pinions 14 and 15 situated outside the rear flange 13.
  • Each cassette 11 carries a pair of plate 8 and blanket 9 cylinders corresponding to a determined format.
  • the apparatus according to the invention makes it possible, as will be seen below, to replace one cassette 11 very easily with another when it comes to changing the format of the printing.
  • Figures 1 and 2 there is shown in solid line, two plate cylinders 8 and blanket 9 corresponding to a large format and in phantom two other plate cylinders 8a and blanket 9a corresponding to a small format.
  • an infinite number of other cassettes 11 can be provided carrying cylinders having diameters between those of cylinders 8, 9 of large format and 8a, 9a of small format.
  • the drive pinions 14, 15 have a pitch diameter corresponding substantially to that of the cylinders 8, 9 so that in the views of FIGS. 1 and 2 they are practically coincident with the circles representing the peripheral surfaces of these cylinders.
  • Each cassette 11 carries, on the front face of the plate cylinder 8, a graduated disc allowing an angular pre-setting of the cylinders with each other, whatever the stopping position of the device.
  • the rotary drive of the plate cylinders 8 and blanket 9 is carried out from a pinion 16 which is rotatably mounted on the rear upright 2 of the frame and which is driven in rotation, by means of a mechanism suitable transmission not shown, by a general control motor.
  • This drive pinion 16 is always engaged, whatever the format of the printing, with the pinion 15 secured to the shaft of the blanket cylinder 9, which pinion 15 is in turn engaged with the pinion 14 secured to the shaft of the plate cylinder 8.
  • This pinion 16 is always the same and the pinions 14 and 15 are cut into helicoid corrected so that the pinion 16 always meshes properly.
  • the printing apparatus comprises a counterpart cylinder 17, which is mounted idly and whose shaft extends between two lateral flanges constituting a movable support 18 for the counterpart cylinder 17.
  • This support 18 is mounted at pivoting about a transverse axis 19 ( Figure 1), so that the support 18 and the counter cylinder 17 can occupy several positions depending on the format of the print.
  • the counterpart cylinder is shown in its lowest position, in which it is retracted to allow the outlet or the establishment of the cassette 11 as will be seen later. In this lowest position, it is spaced from the blanket cylinder 9, below the lower edges of the vertical and longitudinal flanges 12 and 13 of the cassette 11.
  • the counterpart cylinder is shown in a slightly higher position. 17a in which it is tangent to the blanket cylinder 9 corresponding to the large format, and in an even higher position 17b in which it is tangent to the blanket cylinder 9a corresponding to the small format.
  • the sheet of paper 21 on which the printing is carried out passes, in the usual manner, between the counter cylinder 17 and the blanket cylinder 9, these two cylinders being tangent and under pressure during printing.
  • the position of the lower counterpart cylinder 17 around its pivot axis 19 is adjusted by means of a pneumatic or hydraulic cylinder 22, for example of the bellows type, placed under the pivoting support 18 and bearing on a base 23 forming part of the device body.
  • a pneumatic or hydraulic cylinder 22 When the jack 22 is supplied with pressurized fluid, it expands and it then causes the pivoting of the support 18 and of the counterpart cylinder 17 in a clockwise direction around the axis 19, as indicated by arrow f in FIG. 2.
  • the counterpart cylinder 17 has raceways mounted on eccentrics and rolling on other raceways of the blanket cylinder 9 in order to adjust the difference between the two cylinders 9 and 17 depending on the material of the printed tablecloth and the work to be done.
  • Each cassette 11 carrying a pair of plate 8 and blanket 9 cylinders can be moved horizontally and transversely, when changing format.
  • the two front 1 and rear 2 uprights of the frame are respectively pierced with openings 1a, 2a whose shape corresponds to that of the vertical flanges 12, 13 of the cassette 11, with however slightly larger dimensions.
  • Each of the vertical flanges 12, 13 carries, in its upper part, two rollers 24, 25 and, in its lower part, two other rollers 26, 27, all these rollers being mounted for rotation on horizontal and longitudinal pivots carried by the two opposite vertical edges of each of the flanges 12, 13.
  • each roller 25 has a biconical shape and is intended to engage and to roll in a throat 29a having a triangular cross section adapted to the shape of the roller 25 and formed in the upper face of the guide support rail 29.
  • Each of the vertical flanges 12, 13 of the cassette 11 has, in its right vertical edge, a notch 31 in an arc of a circle whose radius corresponds to that of the cylindrical part of the right support rail 28.
  • This notch 31 is formed at a height , relative to the lower edge of the flange 12, 13, such that when the cassette 11 is inserted into the device this notch 31 is located substantially at the level of the right support rail 28.
  • each of the flanges 12, 13 has, in its left vertical edge, a V-shaped notch 32, the point of which extends horizontally towards the inside of the flange and whose upper side 32a, inclined relative to the horizontal, constitutes a bearing surface for the end of the rod 33 of a jack 34.
  • Each jack 34 is mounted, on the associated upright 1, 2 of the frame, so as to be inclined and its axis is perpendicular to the surface support 32a of the corresponding flange 12, 13.
  • Each of the flanges 12, 13 has, in its horizontal upper edge, a horizontal groove, such as the groove 13a, with a V-shaped cross section and in which the lower part, also with a V-profile, engages with an adjustable stop. 35.
  • the position of this stopper is adjusted by means of a rod 36 rotatably mounted in a support 43 and the threaded end portion 36a of which is screwed into a tapped hole formed in the stopper 35.
  • the axis of the adjustment rod 36 is slightly inclined relative to the horizontal and the lower edge 35a of the stop 35 is in turn inclined at the same angle relative to the axis of the rod 36 so that this edge 35a extends horizontally.
  • a rotation of the rod 36, in one direction or the other makes it possible to move the stop 35 longitudinally and consequently place the lower edge 35a of the latter more or less far in the groove 13a of the flange 13 , therefore to adjust the position of the cassette 11 and thus the key with the two right and central touching cylinders 5 and 6.
  • only one of the flanges 12, 13 could have a groove with a V-shaped cross section in its upper edge, ensuring a centering function in cooperation with a stop of the same shape, the other flange then having a flat upper edge cooperating with an adjustable flat stop.
  • the printing apparatus comprises, on the front upright 1, two pivoting arms 37 (FIGS. 4 and 5) which are articulated around longitudinal axes 38 carried by support bearings 39 fixed to the front upright 1.
  • Each arm 37 can pivot between a retracted position inside the upright 1, as shown in phantom, and a horizontal position in which the arm 37 extends outwards, perpendicular to the upright 1.
  • the pivoting movement of each arm 37 towards the horizontal position is limited by a finger 41 carried by this arm 37 and engaging in a notch 42 forming a stop.
  • the printing apparatus according to the invention is also provided, in its lower part, with a movable support 44 which extends in the vertical and transverse median plane of the cassette 11.
  • This movable support 44 is constituted by a profile upper 45 with a straight section in 1, the lower wing of which is secured to a horizontal plate 46 (FIG. 2) the edges of which pass between the rollers 47 disposed respectively above and below the plate 46, to ensure horizontal guidance of the support 44.
  • a vertical console 48 which has, in its upper face, a notch 49. In this notch can engage the end part of a link arm 51 which is articulated around a horizontal pivot 52 of transverse axis mounted on the middle lower part of the front vertical flange 12 of the cassette 11.
  • the adjustable stops 35 make it possible to adjust the key in contact with the plate cylinder 8 with the right 5 and central 6 touch cylinders, in other words the more or less great crushing of the flexible surface layer of these touch cylinders. Due to the force F, the upper rollers 24 and 25 are raised relative to the respective upper guide support rails 28 and 29.
  • the supply to the bellows cylinder 22 is cut off so that the lower counterpart cylinder comes into its lowest extreme position, below the lower edges of the flanges 12, 13.
  • the supply to the jacks 34 is then cut off.
  • the cassette 11 falls, under the effect of its own weight, onto the two guide support rails 28, 29.
  • the cassette pivots around the cylindrical part of the right support rail 28 until the roller 25 comes into contact with the groove 29a. Then there is a slight sliding to the left until the roller 25 reaches the bottom of the groove and the right roller 24 comes to bear on the upper flat 28a of the upper right rail 28.
  • the operation of inserting the new cassette 11 into the printing apparatus is carried out in the reverse direction.
  • the mobile assembly is pushed back towards the interior of the device, until the lower mobile support 44 and the cassette 11 are completely retracted inside.
  • a damping cylinder 50 which is carried by the movable support 44, then comes in cotact with a stop 50a carried by the base of the apparatus to avoid any brutal shock during the retraction of the cassette 11.
  • the jacks 34 so as to apply the new plate cylinder 8a against the touching cylinders 6, 7.
  • the flanges 12, 13 are moved in the direction of the upper rail 28, until the notch 31 of each of these flanges comes into contact with the cylindrical surface of the rail.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Presses (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
  • Electrostatic Charge, Transfer And Separation In Electrography (AREA)

Abstract

An offset printing machine with variable format comprises two upper transverse rails extending between two front and rear longitudianl uprights of the frame of the machine. A cassette carrying the plate and blanket cylinders is suspended from these rails, during a movement of introduction or removal of said cassette, via upper rollers of horizontal and longitudinal axes mounted in the upper part of the cassette. These two upper transverse rails project forwardly with respect to the front upright of the frame. This front upright bears, on its outer face, two lower horizontal arms extending forwardly and on which the cassette rolls, during a movement of introduction or removal, via lower rollers of horizontal and longitudinal axes, mounted in the lower part of the cassette.

Description

La présente invention concerne un appareil d'impression offset à format variable.The present invention relates to a variable format offset printing apparatus.

On sait que les appareils d'impression offset comportent un dispositif d'encrage et un dispositif de mouillage pour appliquer une couche d'encre et une couche d'une solution de mouillage, en général de l'eau, à la surface d'au moins un cylindre toucheur lui-même en contact avec un cylindre porte-plaque. Un cylindre blanchet est monté tangent au cylindre porte-plaque pour effectuer l'impression sur une nappe défilant entre le cylindre blanchet et un cylindre contrepartie appliqué sous pression contre le précédent.It is known that offset printing devices include an inking device and a wetting device for applying a layer of ink and a layer of a wetting solution, in general water, to the surface of minus a touch cylinder itself in contact with a plate cylinder. A blanket cylinder is mounted tangent to the plate cylinder for printing on a traveling web between the blanket cylinder and a counter cylinder applied under pressure against the previous one.

Un appareil d'impression de ce genre est décrit dans le brevet français FR-A- 2 350 198 de la demanderesse. Cet appareil, prévu pour l'impression successive en plusieurs couleurs sur une même nappe, comporte plusieurs ensembles d'impression superposés, chacun de ces ensembles d'impression comprenant un cylindre porte-plaque et un cylindre blanchet montés tangents l'un à l'autre dans un même plan horizontal. Les paires de cylindres porte-plaque et blanchet sont ainsi superposées et elles sont toutes portées par un cadre pouvant être déplacé dans le sens transversal, c'est-à-dire perpendiculairement au sens de défilement de la nappe imprimée, pour être sorti du bâti de l'appareil et être remplacé par un autre cadre similaire portant des plaques correspondant à une nouvelle impression. Un tel appareil, s'il présente des avantages incontestables en ce qui concerne la commodité de remplacement des cylindres porte-plaque, n'est toutefois pas adapté à une impression suivant des formats différents qui exige des remplacements relativement fréquents des cylindres porte-plaque, en fonction du format de l'impression désirée.A printing device of this kind is described in French patent FR-A-2 350 198 of the applicant. This device, intended for successive printing in several colors on the same tablecloth, comprises several superimposed printing assemblies, each of these printing assemblies comprising a plate cylinder and a blanket cylinder mounted tangent to each other. other in the same horizontal plane. The pairs of plate and blanket cylinders are thus superimposed and they are all carried by a frame which can be moved in the transverse direction, that is to say perpendicular to the direction of travel of the printed web, to be removed from the frame of the device and be replaced by another similar frame bearing plates corresponding to a new impression. Such an apparatus, if it has indisputable advantages as regards the convenience of replacing the plate cylinders, is however not suitable for printing according to different formats which requires relatively frequent replacements of the plate cylinders, depending on the format of the desired print.

La présente invention vise à remédier à ces inconvénients en procurant un appareil d'impression pourvu de moyens très simples permettant un changement aisé et rapide du cylindre porte-plaque et du cylindre blanchet dans le cas d'un changement de format, ainsi qu'un nettoyage facile de la plaque offset, et un changement aisé de cette plaque ou même du blanchet si ce dernier est usé.The present invention aims to remedy these drawbacks by providing a printing device provided with very simple means allowing an easy and rapid change of the plate cylinder and the blanket cylinder in the case of a format change, as well as a easy cleaning of the offset plate, and an easy change of this plate or even of the blanket if the latter is worn.

A cet effet, cet appareil d'impression offset à format variable comprenant un bâti formé de deux montants longitudinaux antérieur et postérieur, ce bâti portant au moins un cylindre toucheur recevant une couche d'encre d'un dispositif d'encrage et une couche de solution de mouillage à partir d'un dispositif de mouillage, un cylindre porte-plaque tangent au cylindre toucheur, un cylindre blanchet tangent au cylindre porte-plaque et un cylindre contrepartie monté sur un support mobile de mainère à pouvoir être appliqué sous pression contre le cylindre blanchet, la nappe à imprimer passant entre ce cylindre blanchet et le cylindre contre-partie, le cylindre porte-plaque et le cylindre blanchet étant montés à rotation entre deux flasques verticaux et longitudinaux reliés entre eux par des traverses et formant avec ceux-ci une cassette mobile transversalement, c'est-à-dire perpendiculairement au sens de défilement de la nappe imprimée, et pouvant être sortie du bâti de l'appareil à travers une ouverture prévue dans le montant longitudinal antérieur du bâti, le montant longitudinal antérieur du bâti, deux rails supérieurs transversaux s'étendant entre les deux montants du bâti de l'appareil et auxquels est suspendue la cassette, lors d'un mouvement d'introduction ou de sortie de celle-ci, par l'intermédiaire de galets supérieurs d'axes horizontaux et longitudinaux montés à la partie supérieure de la cassette et un support inférieur sur lequel roule la cassette, lors d'un mouvement d'introduction ou de sortie, par l'intermédiaire de galets inférieurs d'axes horizontaux et longitudinaux montés à la partie inférieure de la cassette, est caractérisé en ce que les deux rails supérieurs transversaux font saillie vers l'avant par rapport au montant longitudinal antérieur, le support inférieur de la cassette comprend, d'une part, deux bras horizontaux inférieurs qui sont montés à pivotement sur la face externe du montant antérieur du bâti de manière à pouvoir être escamotés le long du montant antérieur, dans une position sensiblement verticale, lorsqu'ils ne sont pas utilisés pour l'introduction ou la sortie d'une cassette, ou au contraire à s'étendre horizontalement vers l'avant, au delà desdits rails supérieurs transversaux, lors de ces opérations, pour supporter le flasque postérieur de la cassette, après que lesdits galets supérieurs ont quitté lesdits rails supérieurs, et d'autre part, un support sur lequel repose le flasque antérieur de la cassette et qui est mobile transversalement sous le cylindre contrepartie, pouvant être tiré vers l'avant conjointement avec ladite cassette de manière à être en porte-à-faux par rapport au montant antérieur de l'appareil, pour supporter le flasque vertical et longitudinal antérieur de la cassette, lorsque celle-ci est tirée totalement à l'extérieur de l'appareil.To this end, this variable format offset printing apparatus comprising a frame formed by two front and rear longitudinal uprights, this frame carrying at least one touching cylinder receiving a layer of ink from an inking device and a layer of wetting solution from a wetting device, a plate cylinder tangent to the touch cylinder, a blanket cylinder tangent to the plate cylinder and a counter cylinder mounted on a movable support to be able to be applied under pressure against the blanket cylinder, the tablecloth to be printed passing between this blanket cylinder and the counterpart cylinder, the plate cylinder and the blanket cylinder being rotatably mounted between two vertical and longitudinal flanges connected together by crosspieces and forming with these a cassette movable transversely, that is to say perpendicular to the direction of travel of the printed web, and which can be removed from the frame of the device through an opening provided in the front longitudinal upright of the frame, the front longitudinal upright of the frame, two transverse upper rails extending between the two uprights of the frame of the device and to which the cassette is suspended, during an insertion movement or from the latter, by means of upper rollers of horizontal and longitudinal axes mounted on the upper part of the cassette and a lower support on which the cassette rolls, during an introduction or exit movement , by means of lower rollers with horizontal and longitudinal axes mounted on the lower part of the cassette, is characterized in that the two upper transverse rails project forward towards the front longitudinal post, the lower support of the cassette comprises, on the one hand, two lower horizontal arms which are pivotally mounted on the external face of the front upright of the frame so as to be able to be retracted the lo ng of the front upright, in a substantially vertical position, when they are not used for the introduction or the exit of a cassette, or on the contrary to extend horizontally forwards, beyond said transverse upper rails, during these operations, to support the rear flange of the cassette, after said upper rollers have left said upper rails, and on the other hand, a support on which the front flange of the cassette rests and which is movable transversely under the cylinder counterpart, which can be pulled forward together with said cassette so as to be cantilevered with respect to the front upright of the device, to support the vertical and longitudinal front flange of the cassette, when the latter is pulled completely outside the device.

L'appareil d'impression suivant l'invention permet une sortie très aisée d'une cassette pourvue d'un cylindre porte-plaque et d'un cylindre blanchet, en vue d'un changement de format. Une fois cette cassette tirée à l'extérieur de l'appareil, elle peut être ou bien prise en charge et manipulée par un appareil de levage approprié ou bien encore placée sur un chariot mobile portant une autre cassette devant être substituée à celle précédemment utilisée. La cassette peut aussi rester sur le support, une fois sortie, pour permettre un changement rapide de la plaque d'impression et/ou du blanchet ou pour un nettoyage de la plaque. L'appareil comprend également des moyens assurant un calage en pression automatique du cylindre porte-plaque d'une cassette, lorsque celle-ci a été introduite à l'intérieur.The printing device according to the invention allows a very easy exit from a cassette provided with a plate cylinder and a blanket cylinder, for a change of format. Once this cassette has been pulled outside the device, it can either be taken over and handled by an appropriate lifting device or else placed on a mobile carriage carrying another cassette which must be substituted for the one previously used. The cassette can also remain on the support, once removed, to allow a quick change of the printing plate and / or the blanket or for cleaning the plate. The apparatus also comprises means ensuring an automatic pressure setting of the plate cylinder of a cassette, when the latter has been introduced inside.

Suivant une autre caractéristique de l'invention, l'entrée du mouvement dans la cassette s'effectue au moyen d'un pignon d'entraînement monté sur le montant postérieur du bâti et qui est relié en prise avec un pignon solidaire de l'arbre du cylindre blanchet, lequel est accouplé en permanence avec un pignon solidaire de l'arbre du cylindre porte-plaque. Grâce à une telle disposition, du fait que le cylindre porte-plaque crée toujours, par rapport au cylindre blanchet, une action de freinage, on obtient un rattrapage du jeu dans les engrenages de transmission qui est toujours situé du même côté et par conséquent une meilleure précision de l'impression. Si l'entraînement avait lieu à partir du cylindre porte-plaque, il pourrait au contraire se produire, par suite du déséquilibre des tensions de la nappe en amont et en aval, que le cylindre blanchet fonctionne, suivant le cas, en moteur ou en frein, ce qui entraînerait, à l'endroit de l'accouplement entre le cylindre porte-plaque et le cylindre blanchet, un glissement relatif au jeu entre les dents des engrenages en prise, d'où une imprécision de l'impression. Le fait que le mouvement se fasse, dans l'appareil suivant l'invention, à partir du cylindre blanchet, permet d'éviter complètement une telle imprécision. Par ailleurs ceci permet également d'avoir une vitesse de nappe constante, pour une vitesse de rotation constante du moteur d'entraînement, quel que soit le format. Autrement dit la puissance du moteur installée est constante pour les divers formats de l'impression.According to another characteristic of the invention, the movement is entered into the cassette by means of a drive pinion mounted on the rear upright of the frame and which is connected in engagement with a pinion secured to the shaft. of the blanket cylinder, which is permanently coupled with a pinion secured to the cylinder shaft plate holder. Thanks to such an arrangement, owing to the fact that the plate cylinder always creates, in relation to the blanket cylinder, a braking action, a play in the transmission gears is taken up which is always located on the same side and consequently a better printing accuracy. If the drive took place from the plate cylinder, it could on the contrary occur, as a result of the imbalance of the tensions of the web upstream and downstream, that the blanket cylinder operates, as the case may be, in motor or in brake, which would cause, at the location of the coupling between the plate cylinder and the blanket cylinder, a sliding relative to the play between the teeth of the gears in engagement, where an imprecision of the impression. The fact that the movement takes place, in the apparatus according to the invention, from the blanket cylinder, makes it possible to completely avoid such imprecision. Furthermore, this also makes it possible to have a constant sheet speed, for a constant speed of rotation of the drive motor, whatever the format. In other words, the installed motor power is constant for the various printing formats.

Suivant une caractère complémentaire de l'invention, le calage en pression du cylindre porte-plaque de la cassette contre le ou les cylindres toucheurs a lieu en faisant pivoter la cassette, autour de l'un des rails transversaux supérieurs formant axe de pivotement, et ce sous l'action de vérins portés par les deux montants du bâti et exerçant leurs efforts sur les bords verticaux des deux flasques longitudinaux de la cassette qui sont voisins de l'autre rail supérieur transversal. Le mouvement de pivotement de la cassette est limité par des butées réglables sur lesquelles prennent appui les bords supérieurs des flasques verticaux et longitudinaux de la cassette, ces butées définissant la touche au contact entre le cylindre porte-plaque et le ou les cylindres toucheurs, autrement dit l'écrasement de ceux-ci. De cette façon, lors d'un changement de cassette correspondant à un changement de format, on obtient automatiquement un calage en pression correct du nouveau cylindre porte-plaque, si les butées réglables n'ont pas été déplacées.According to a complementary characteristic of the invention, the pressure setting of the plate cylinder of the cassette against the touching cylinder or cylinders takes place by pivoting the cassette, around one of the upper transverse rails forming a pivot axis, and this under the action of jacks carried by the two uprights of the frame and exerting their forces on the vertical edges of the two longitudinal flanges of the cassette which are adjacent to the other transverse upper rail. The pivoting movement of the cassette is limited by adjustable stops on which the upper edges of the vertical and longitudinal flanges of the cassette bear, these stops defining the key in contact between the plate cylinder and the touching cylinder or cylinders, otherwise said the crushing of these. In this way, during a change of cassette corresponding to a change of format, a new correct pressure setting of the new plate cylinder is automatically obtained, if the adjustable stops have not been moved.

On décrira ci-après, à titre d'exemple non limitatif, une forme d'exécution de la présente invention, en référence au dessin annexé sur lequel:

  • La figure 1 est une vue en élévation, avec arrachement partiel, d'un appareil d'impression offset suivant l'invention.
  • La figure 2 est une vue simplifiée en coupe verticale et longitudinale, à plus grande échelle, de l'appareil d'impression offset.
  • La figure 3 est une vue en coupe verticale et transversale faite suivant la ligne III-III de la figure 2.
  • La figure 4 est une vue en élévation de la partie inférieure et antérieure d'une cassette et des organes associés montés sur le bâti.
  • La figure 5 est une vue en coupe verticale et transversale de la partie inférieure du montant antérieur du bâti et du flasque antérieur de la cassette.
  • La figure 6 est une vue en coupe verticale et transversale simplifiée de l'appareil illustrant en trait mixte une cassette en position sortie, cette cassette étant destinée à être déplacée au moyen d'un organe de levage.
An embodiment of the present invention will be described below, by way of non-limiting example, with reference to the appended drawing in which:
  • Figure 1 is an elevational view, partially broken away, of an offset printing apparatus according to the invention.
  • Figure 2 is a simplified view in vertical and longitudinal section, on a larger scale, of the offset printing apparatus.
  • Figure 3 is a vertical and cross-sectional view taken along line III-III of Figure 2.
  • Figure 4 is an elevational view of the lower and front part of a cassette and associated members mounted on the frame.
  • Figure 5 is a vertical and cross sectional view of the lower part of the front upright of the frame and the front flange of the cassette.
  • Figure 6 is a simplified vertical and cross-sectional view of the apparatus illustrating in broken lines a cassette in the extended position, this cassette being intended to be moved by means of a lifting member.

L'appareil d'impression offset représenté sur le dessin comprend un bâti constitué essentiellement de deux montants longitudinaux antérieur 1 et postérieur 2 entre lesquels s'étendent horizontalement les différents cylindres de l'appareil d'impression. Dans la présente description les termes «longitudinal» et «transversal» signifient respectivement «parallèle» et «perpendiculaire» au sens de défilement de la nappe imprimée. A la partie supérieure, le bâti 1, 2 porte un encrier 3 qui assure la distribution de l'encre par l'intermédiaire d'un certain nombre de cylindres égali- seurs et baladeurs désignés dans leur ensemble par 4. Ces cylindres amènent l'encre à trois cylindres toucheurs 5, 6 et 7. Un dispositif de mouillage 10 est également prévu pour fournir une solution de mouillage, en général de l'eau, à la plaque par l'intermédiaire des cylindres toucheurs. Avec les trois cylindres toucheurs est en contact un cylindre porte-plaque 8 lui-même tangent à un cylindre blanchet 9. Les deux cylindres toucheurs 5 et 6 sont montés dans des positions fixes sur le bâti tandis que le troisième cylindre toucheur 7 est monté mobile sur le bâti pour que, quelque soit le format, ces trois cylindres toucheurs soient tous tangents au cylindre porte-plaque 8. Les deux cylindres porte-plaque 8 et blanchet 9 sont montés à rotation sur une cassette 11 qui forme un ensemble indépendant et qui est mobile par rapport au bâti 1, 2 de l'appareil, dans le sens transversal. Cette cassette 11 comprend essentiellement deux flasques verticaux et longitudinaux à savoir un flasque antérieur 12 et un flasque postérieur 13 entretoisés par des traverses 20 (fig. 3) et entre lesquels s'étendent le cylindre porte-plaque 8 et le cylindre blanchet 9. La position des traverses 20 sur les différentes cassettes dépend du format de l'impression. Les cylindres 8 et 9 sont portés par des arbres montés à rotation dans des paliers portés par les deux flasques transversaux 12, 13 et respectivement solidaires, à leurs extrémités postérieures, de pignons 14 et 15 situés à l'extérieur du flasque postérieur 13.The offset printing apparatus shown in the drawing comprises a frame consisting essentially of two longitudinal anterior 1 and posterior 2 uprights between which the different cylinders of the printing apparatus extend horizontally. In the present description the terms "longitudinal" and "transverse" mean respectively "parallel" and "perpendicular" to the direction of travel of the printed web. At the upper part, the frame 1, 2 carries an inkwell 3 which distributes the ink by means of a number of equalizing and sliding cylinders designated as a whole by 4. These cylinders bring the ink with three touch rollers 5, 6 and 7. A wetting device 10 is also provided for supplying a wetting solution, generally water, to the plate via the touch rolls. With the three touch cylinders is in contact a plate cylinder 8 itself tangent to a blanket cylinder 9. The two touch cylinders 5 and 6 are mounted in fixed positions on the frame while the third touch cylinder 7 is mounted mobile on the frame so that, whatever the format, these three touch cylinders are all tangent to the plate cylinder 8. The two plate cylinders 8 and blanket 9 are rotatably mounted on a cassette 11 which forms an independent assembly and which is movable relative to the frame 1, 2 of the device, in the transverse direction. This cassette 11 essentially comprises two vertical and longitudinal flanges, namely an anterior flange 12 and a posterior flange 13 braced by crosspieces 20 (FIG. 3) and between which the plate cylinder 8 and the blanket cylinder 9 extend. position of the crosspieces 20 on the different cassettes depends on the format of the print. The cylinders 8 and 9 are carried by shafts mounted for rotation in bearings carried by the two transverse flanges 12, 13 and respectively integral, at their rear ends, with pinions 14 and 15 situated outside the rear flange 13.

Chaque cassette 11 porte une paire de cylindres porte-plaque 8 et blanchet 9 correspondant à un format déterminé. L'appareil suivant l'invention permet, comme on le verra plus loin, de remplacer très aisément une cassette 11 par une autre lorsqu'il s'agit de changer le format de l'impression. Sur les figures 1 et 2 on a représenté en trait plein, deux cylindres porte-plaque 8 et blanchet 9 correspondant à un grand format et en trait mixte deux autres cylindres porte-plaque 8a et blanchet 9a correspondant à un petit format. Naturellement on peut prévoir une infinité d'autres cassettes 11 portant des cylindres ayant des diamètres compris entre ceux des cylindres 8, 9 de grand format et 8a, 9a de petit format. Les pignons d'entraînement 14, 15 ont un diamètre primitif correspondant sensiblement à celui des cylindres 8, 9 si bien que sur les vues des figures 1 et 2 ils sont pratiquement confondus avec les cercles représentant les surfaces périphériques de ces cylindres.Each cassette 11 carries a pair of plate 8 and blanket 9 cylinders corresponding to a determined format. The apparatus according to the invention makes it possible, as will be seen below, to replace one cassette 11 very easily with another when it comes to changing the format of the printing. In Figures 1 and 2 there is shown in solid line, two plate cylinders 8 and blanket 9 corresponding to a large format and in phantom two other plate cylinders 8a and blanket 9a corresponding to a small format. Naturally, an infinite number of other cassettes 11 can be provided carrying cylinders having diameters between those of cylinders 8, 9 of large format and 8a, 9a of small format. The drive pinions 14, 15 have a pitch diameter corresponding substantially to that of the cylinders 8, 9 so that in the views of FIGS. 1 and 2 they are practically coincident with the circles representing the peripheral surfaces of these cylinders.

Chaque cassette 11 porte, sur la face avant du cylindre porte-plaque 8, un disque gradué permettant un précalage angulaire des cylindres entre eux et ce quelle que soit la position d'arrêt de l'appareil.Each cassette 11 carries, on the front face of the plate cylinder 8, a graduated disc allowing an angular pre-setting of the cylinders with each other, whatever the stopping position of the device.

L'entraînement en rotation des cylindres porte-plaque 8 et blanchet 9 est réalisé à partir d'un pignon 16 qui est monté à rotation sur le montant postérieur 2 du bâti et qui est entraîné en rotation, par l'intermédiaire d'un mécanisme de transmission approprié non représenté, par un moteur de commande générale. Ce pignon d'entraînement 16 est toujours en prise, quel que soit le format de l'impression, avec le pignon 15 solidaire de l'arbre du cylindre blanchet 9, lequel pignon 15 est à son tour en prise avec le pignon 14 solidaire de l'arbre du cylindre porte-plaque 8. Ce pignon 16 est toujours le même et les pignons 14 et 15 sont tailliés en hélicoïdes corrigés pour que le pignon 16 engrène toujours correctement.The rotary drive of the plate cylinders 8 and blanket 9 is carried out from a pinion 16 which is rotatably mounted on the rear upright 2 of the frame and which is driven in rotation, by means of a mechanism suitable transmission not shown, by a general control motor. This drive pinion 16 is always engaged, whatever the format of the printing, with the pinion 15 secured to the shaft of the blanket cylinder 9, which pinion 15 is in turn engaged with the pinion 14 secured to the shaft of the plate cylinder 8. This pinion 16 is always the same and the pinions 14 and 15 are cut into helicoid corrected so that the pinion 16 always meshes properly.

Dans sa partie inférieure, l'appareil d'impression comporte un cylindre contrepartie 17, qui est monté fou et dont l'arbre s'étand entre deux flasques latéraux constituant un support mobile 18 pour le cylindre contrepartie 17. Ce support 18 est monté à pivotement autour d'un axe transversal 19 (figure 1), si bien que le support 18 et le cylindre contrepartie 17 peuvent occuper plusieurs positions en fonction du format de l'impression. Sur la figure 1, le cylindre contrepartie est représenté dans sa position la plus basse, dans laquelle il est escamoté pour permettre la sortie ou la mise en place de la cassette 11 comme on le verra plus loin. Dans cette position la plus basse, il est écarté du cylindre blanchet 9, en dessous des bords inférieurs des flasques verticaux et longitudinaux 12 et 13 de la cassette 11. Sur la figure 2, le cylindre contrepartie est représentée dans une position un peu plus élevée 17a dans laquelle il est tangent au cylindre blanchet 9 correspondant au grand format, et dans une position encore plus élevée 17b dans laquelle il est tangent au cylindre blanchet 9a correspondant au petit format.In its lower part, the printing apparatus comprises a counterpart cylinder 17, which is mounted idly and whose shaft extends between two lateral flanges constituting a movable support 18 for the counterpart cylinder 17. This support 18 is mounted at pivoting about a transverse axis 19 (Figure 1), so that the support 18 and the counter cylinder 17 can occupy several positions depending on the format of the print. In Figure 1, the counterpart cylinder is shown in its lowest position, in which it is retracted to allow the outlet or the establishment of the cassette 11 as will be seen later. In this lowest position, it is spaced from the blanket cylinder 9, below the lower edges of the vertical and longitudinal flanges 12 and 13 of the cassette 11. In FIG. 2, the counterpart cylinder is shown in a slightly higher position. 17a in which it is tangent to the blanket cylinder 9 corresponding to the large format, and in an even higher position 17b in which it is tangent to the blanket cylinder 9a corresponding to the small format.

La nappe de papier 21 sur laquelle est effectuée l'impression passe, de la manière habituelle, entre le cylindre contrepartie 17 et le cylindre blanchet 9, ces deux cylindres étant tangents et en pression lors de l'impression.The sheet of paper 21 on which the printing is carried out passes, in the usual manner, between the counter cylinder 17 and the blanket cylinder 9, these two cylinders being tangent and under pressure during printing.

La position du cylindre conrepartie inférieur 17 autour de son axe de pivotement 19 est ajustée au moyen d'un vérin pneumatique ou hydraulique 22, par exemple du type à soufflet, disposé sous le support pivotant 18 et prenant appui sur un socle 23 faisant partie du bâti de l'appareil. Lorsque le vérin 22 est alimenté en fluide sous pression, il se dilate et il provoque alors un mouvement du pivotement du support 18 et du cylindre contrepartie 17 dans le sens des aiguilles d'une montre autour de l'axe 19, comme il est indiqué par la flèche f sur la figure 2. Le cylindre contrepartie 17 possède des chemins de roulement montés sur excentriques et roulant sur d'autres chemins de roulement du cylindre blanchet 9 afin de régler l'écart entre les deux cylindres 9 et 17 suivant le matériau de la nappe imprimée et le travail à effectuer.The position of the lower counterpart cylinder 17 around its pivot axis 19 is adjusted by means of a pneumatic or hydraulic cylinder 22, for example of the bellows type, placed under the pivoting support 18 and bearing on a base 23 forming part of the device body. When the jack 22 is supplied with pressurized fluid, it expands and it then causes the pivoting of the support 18 and of the counterpart cylinder 17 in a clockwise direction around the axis 19, as indicated by arrow f in FIG. 2. The counterpart cylinder 17 has raceways mounted on eccentrics and rolling on other raceways of the blanket cylinder 9 in order to adjust the difference between the two cylinders 9 and 17 depending on the material of the printed tablecloth and the work to be done.

Chaque cassette 11 portant une paire de cylindres porte-plaque 8 et blanchet 9 peut être déplacée horizontalement et transversalement, lors d'un changement de format. A cet effet, les deux montants antérieur 1 et postérieur 2 du bâti sont respectivement percés d'ouvertures 1a, 2a dont la forme correspond à celle des flasques verticaux 12,13 de la cassette 11, avec toutefois des dimensions légèrement supérieures. Chacun des flasques verticaux 12, 13 porte, dans sa partie supérieure, deux galets 24, 25 et, dans sa partie inférieure, deux autres galets 26, 27, tous ces galets étant montés à rotation sur des pivots horizontaux et longitudinaux portés par les deux bords verticaux opposés de chacun des flasques 12, 13. Le galet supérieur droit 24, en considérant la figure 2, est situé au-dessus d'un rail transversal supérieur 28 qui s'étand entre les deux montants 1, 2 du bâti et qui fait saillie vers l'avant par rapport au montant antérieur 1. Ce rail 28 est constitué par une portion de barre cylindrique présentant un méplat supérieur horizontal 28a sur lequel peuvent rouler les galets 24. Par ailleurs, les galets supérieurs 25 sont disposés au-dessus d'un autre rail support 29 s'étendant transversalement entre les deux montants 1, 2 et faisant saillie vers l'avant, par rapport au montant antérieur 1. Chaque galet 25 a une forme biconique et il est destiné à s'engager et à rouler dans une gorge 29a présentant une section droite triangulaire adaptée à la forme du galet 25 et ménagée dans la face supérieure du rail support de guidage 29.Each cassette 11 carrying a pair of plate 8 and blanket 9 cylinders can be moved horizontally and transversely, when changing format. To this end, the two front 1 and rear 2 uprights of the frame are respectively pierced with openings 1a, 2a whose shape corresponds to that of the vertical flanges 12, 13 of the cassette 11, with however slightly larger dimensions. Each of the vertical flanges 12, 13 carries, in its upper part, two rollers 24, 25 and, in its lower part, two other rollers 26, 27, all these rollers being mounted for rotation on horizontal and longitudinal pivots carried by the two opposite vertical edges of each of the flanges 12, 13. The right upper roller 24, considering FIG. 2, is located above an upper transverse rail 28 which extends between the two uprights 1, 2 of the frame and which protrudes forward with respect to the anterior upright 1. This rail 28 is constituted by a portion of cylindrical bar having a horizontal upper flat 28a on which the rollers 24 can roll. Furthermore, the upper rollers 25 are arranged above another support rail 29 extending transversely between the two uprights 1, 2 and projecting forward, with respect to the front upright 1. Each roller 25 has a biconical shape and is intended to engage and to roll in a throat 29a having a triangular cross section adapted to the shape of the roller 25 and formed in the upper face of the guide support rail 29.

Chacun des flasques verticaux 12, 13 de la cassette 11 présente, dans son bord vertical droit, une encoche 31 en arc de cercle dont le rayon correspond à celui de la partie cylindrique du rail support droit 28. Cette encoche 31 est ménagée à une hauteur, par rapport au bord inférieur du flasque 12, 13, telle que lorsque la cassette 11 est introduite dans l'appareil cette encoche 31 se trouve sensiblement au niveau du rail support droit 28.Each of the vertical flanges 12, 13 of the cassette 11 has, in its right vertical edge, a notch 31 in an arc of a circle whose radius corresponds to that of the cylindrical part of the right support rail 28. This notch 31 is formed at a height , relative to the lower edge of the flange 12, 13, such that when the cassette 11 is inserted into the device this notch 31 is located substantially at the level of the right support rail 28.

Par ailleurs, chacun des flasques 12, 13 présente, dans son bord vertical gauche, une encoche en V 32 dont la pointe s'étend horizontalement vers l'intérieur du flasque et dont le côté supérieur 32a, incliné par rapport à l'horizontale, constitue une surface d'appui pour l'extrémité de la tige 33 d'un vérin 34. Chaque vérin 34 est monté, sur le montant associé 1, 2 du bâti, de manière à être incliné et que son axe soit perpendiculaire à la surface d'appui 32a du flasque 12, 13 correspondant.In addition, each of the flanges 12, 13 has, in its left vertical edge, a V-shaped notch 32, the point of which extends horizontally towards the inside of the flange and whose upper side 32a, inclined relative to the horizontal, constitutes a bearing surface for the end of the rod 33 of a jack 34. Each jack 34 is mounted, on the associated upright 1, 2 of the frame, so as to be inclined and its axis is perpendicular to the surface support 32a of the corresponding flange 12, 13.

Chacun des flasques 12, 13 présente, dans son bord supérieur horizontal, une gorge horizontale, telle que la gorge 13a, à section droite en V et dans laquelle s'engage la partie inférieure, également à profil en V, d'une butée réglable 35. Le réglage de la position de cette butée est réalisé au moyen d'une tige 36 montée à rotation dans un support 43 et dont la partie extrême filetée 36a est vissée dans un trou taraudé ménagé dans la butée 35. L'axe de la tige de réglage 36 est légèrement incliné par rapport à l'horizontale et le bord inférieur 35a de la butée 35 est à son tour incliné du même angle par rapport à l'axe de la tige 36 si bien que ce bord 35a s'étend horizontalement. Par conséquent, une rotation de la tige 36, dans un sens ou dans l'autre, permet de déplacer longitudinalement la butée 35 et par conséuent de placer plus ou moins loin le bord inférieur 35a de celle-ci dans la gorge 13a du flasque 13, donc de régler la position de la cassette 11 et ainsi la touche avec les deux cylindres toucheurs droit 5 et central 6. Suivant une variante de réalisation seul d'un des flasques 12, 13 pourrait présenter une gorge à section droite en V dans son bord supérieur, assurant une fonction de centrage en coopération avec une butée de même forme, l'autre flasque présentant alors un bord supérieur plan coopérant avec une butée plane réglable.Each of the flanges 12, 13 has, in its horizontal upper edge, a horizontal groove, such as the groove 13a, with a V-shaped cross section and in which the lower part, also with a V-profile, engages with an adjustable stop. 35. The position of this stopper is adjusted by means of a rod 36 rotatably mounted in a support 43 and the threaded end portion 36a of which is screwed into a tapped hole formed in the stopper 35. The axis of the adjustment rod 36 is slightly inclined relative to the horizontal and the lower edge 35a of the stop 35 is in turn inclined at the same angle relative to the axis of the rod 36 so that this edge 35a extends horizontally. Consequently, a rotation of the rod 36, in one direction or the other, makes it possible to move the stop 35 longitudinally and consequently place the lower edge 35a of the latter more or less far in the groove 13a of the flange 13 , therefore to adjust the position of the cassette 11 and thus the key with the two right and central touching cylinders 5 and 6. According to an alternative embodiment only one of the flanges 12, 13 could have a groove with a V-shaped cross section in its upper edge, ensuring a centering function in cooperation with a stop of the same shape, the other flange then having a flat upper edge cooperating with an adjustable flat stop.

Pour permettre la sortie partielle vers l'avant de la cassette 11, l'appareil d'impression suivant l'invention comprend, sur le montant antérieur 1, deux bras pivotants 37 (figures 4 et 5) qui sont articulés autour d'axes longitudinaux 38 portés par des paliers supports 39 fixés au montant antérieur 1. Chaque bras 37 peut pivoter entre une position escamotée à l'intérieur du montant 1, comme il est indiqué en trait mixte, et une position horizontale dans laquelle le bras 37 s'étend vers l'extérieur, perpendiculairement au montant 1. Le mouvement de pivotement de chaque bras 37 vers la position horizontale est limité par un doigt 41 porté par ce bras 37 et venant s'engager dans une encoche 42 formant arrêt.To allow the partial exit towards the front of the cassette 11, the printing apparatus according to the invention comprises, on the front upright 1, two pivoting arms 37 (FIGS. 4 and 5) which are articulated around longitudinal axes 38 carried by support bearings 39 fixed to the front upright 1. Each arm 37 can pivot between a retracted position inside the upright 1, as shown in phantom, and a horizontal position in which the arm 37 extends outwards, perpendicular to the upright 1. The pivoting movement of each arm 37 towards the horizontal position is limited by a finger 41 carried by this arm 37 and engaging in a notch 42 forming a stop.

L'appareil d'impression suivant l'invention est également pourvu, dans sa partie inférieure, d'un support mobile 44 qui s'étend dans le plan vertical et transversal médian de la cassette 11. Ce support mobile 44 est constitué par un profilé supérieur 45 à section droite en 1 dont l'aile inférieure est solidaire d'une platine horizontale 46 (figure 2) dont les bords passent entre les galets 47 disposés respectivement au-dessus et en dessous de la platine 46, pour assurer le guidage horizontal du support 44. A l'extrémité antérieure du support mobile horizontal 44 est fixée une console verticale 48 qui présente, dans sa face supérieure, une encoche 49. Dans cette encoche peut venir s'engager la partie extrême d'un bras de liaison 51 qui est articulé autour d'un pivot horizontal 52 d'axe transversal monté à la partie inférieure médiane du flasque vertical antérieur 12 de la cassette 11.The printing apparatus according to the invention is also provided, in its lower part, with a movable support 44 which extends in the vertical and transverse median plane of the cassette 11. This movable support 44 is constituted by a profile upper 45 with a straight section in 1, the lower wing of which is secured to a horizontal plate 46 (FIG. 2) the edges of which pass between the rollers 47 disposed respectively above and below the plate 46, to ensure horizontal guidance of the support 44. At the front end of the horizontal movable support 44 is fixed a vertical console 48 which has, in its upper face, a notch 49. In this notch can engage the end part of a link arm 51 which is articulated around a horizontal pivot 52 of transverse axis mounted on the middle lower part of the front vertical flange 12 of the cassette 11.

On décrira maintenant le fonctionnement de l'appareil d'impression suivant l'invention et du dispositif permettant de remplacer aisément une cassette 11 par une autre lors d'un changement de format.We will now describe the operation of the printing apparatus according to the invention and of the device making it possible to easily replace one cassette 11 by another when changing format.

On supposera que l'appareil se trouve en cours d'impression avec des cylindres porte-plaque 8 et blanchet 9 d'un grand format et que ces cylindres doivent être remplacés, en vue d'une impression d'un format plus petit, par des cylindres porte-plaque 8a et blanchet 9a d'un diamètre plus petit. En position d'impression en grand format, le cylindre contrepartie 17 occupe la position 17a de la figure 2. Par ailleurs, les vérins 34 sont alimentés si bien que chacun de ces vérins exerce, par l'intermédiaire de sa tige 33, un effort F dirigé vers le haut et incliné par rapport à la verticala. Cet effort F plaque chacun des flasques verticaux 12, 13 contre le rail support droit 28 et les butées réglables 35 en forme de coin. Dans cette position le cylindre porte-plaque 8a est appliqué contre les cylindres toucheurs 5, 6, 7 qui sont eux montés sur le bâti. Les butées réglables 35 permettent de régler la touche au contact du cylindre porte-plaque 8 avec les cylindres toucheurs droit 5 et central 6, autrement dit l'écrasement plus ou moins grand de la couche superficielle souple de ces cylindres toucheurs. Du fait de l'effort F, les galets supérieurs 24 et 25 sont soulevés par rapport aux rails supports de guidage supérieurs respectifs 28 et 29.It is assumed that the machine is in the process of printing with large-format plate 8 and blanket 9 cylinders and that these cylinders must be replaced, in order to print a smaller format, with plate cylinders 8a and blanket 9a of a smaller diameter. In the large format printing position, the counterpart cylinder 17 occupies position 17a of FIG. 2. Furthermore, the jacks 34 are supplied so that each of these jacks exerts, by means of its rod 33, a force F directed upwards and inclined with respect to the verticala. This force F presses each of the vertical flanges 12, 13 against the right support rail 28 and the adjustable stops 35 in the form of a wedge. In this position the plate cylinder 8a is applied against the touching cylinders 5, 6, 7 which are themselves mounted on the frame. The adjustable stops 35 make it possible to adjust the key in contact with the plate cylinder 8 with the right 5 and central 6 touch cylinders, in other words the more or less great crushing of the flexible surface layer of these touch cylinders. Due to the force F, the upper rollers 24 and 25 are raised relative to the respective upper guide support rails 28 and 29.

On supposera tout d'abord que le changement de cassette est réalisé en utilisant un appareil de levage, tel qu'un palan porté par un chariot mobile sur un chemin de roulement supérieur. Dans ce cas, la sortie de la cassette 12 se fait de la façon illustrée schématiquement sur la figure 6.It will first be assumed that the change of cassette is carried out using a lifting device, such as a hoist carried by a movable carriage on an upper raceway. In this case, the output from the cassette 12 is done as schematically illustrated in FIG. 6.

Avant de procéder à la sortie de la cassette 11 portant les cylindres porte-plaque 8 et blanchet 9, on coupe l'alimentation du vérin à soufflet 22 de manière que le cylindre contrepartie inférieur vienne dans sa position extrême la plus basse, en dessous des bords inférieurs des flasques 12, 13. On coupe ensuite l'alimentation des vérins 34. De ce fait, la cassette 11 retombe, sous l'effet de son propre poids, sur les deux rails supports de guidage 28, 29. Dans un premier temps, la cassette pivote autour de la partie cylindrique du rail support droit 28 jusqu'à ce que le galet 25 vienne en contact avec la gorge 29a. Ensuite il se produit un léger glissement vers la gauche jusqu'à ce que le galet 25 atteigne le fond de la gorge et que le galet droit 24 vienne en appui sur le méplat supérieur 28a du rail supérieur droit 28. On fait ensuite basculer les deux bras supports antérieurs 37 de leur position verticale escamontée en position horizontale comme il est représenté en trait plein sur la figure 5. Le bras de liaison 51 est toujours dans sa position verticale représentée sur la figure 4, dans laquelle son extrémitée inférieure est engagée dans l'encoche 49. A partir de ce moment, le flasque antérieur 12 et par conséquent l'ensemble de la cassette 11 sont liés en translation à la console 48 et au support mobile inférieur 44. On tire alors vers l'avant sur la cassette 11 pour la sortir du bâti de l'appareil. Ce mouvement entraîne la sortie du support mobile inférieur 44 qui vient occuper, à pleine extension, la position indiquée en trait mixte sur la figure 6. Au début du mouvement, les quatre galets supérieurs 24, 25 sont portés par les deux rails supports de guidage 28, 29 puis peu après seuls les galets 24, 25 portés par le flasque postérieur 13 restent en appui sur ces rails, puisque les galets correspondants 24, 25 portés par le flasque antérieur 12 ont quitté les rails. A partir de ce moment le poids de la cassette est repris en partie par l'extrémité antérieure en porte-à-faux du support mobile inférieur 44. Lorsque la cassette 11 est totalement sortie de l'appareil d'impression, ainsi qu'il est indiqué en trait mixte sur la figure 6, les galets inférieurs 26, 27 portés par le flasque postérieur 13 sont venus en appui sur les bras horizontaux 37 et ils supportent ainsi la cassette 11 à sa partie postérieure. La partie antérieure de la cassette est elle soutenue toujours par la console 48 solidaire de l'extrémité antérieure du support mobile 44. La cassette 11 étant ensuite totalement sortie de l'appareil d'impression, il est facile de la soulever au moyen d'un organe de levage tel qu'un palan et de la remplacer par une autre cassette 11 portant les cylindres porte-plaque 8a et blanchet 9a correspondant au petit format.Before proceeding with the output from the cassette 11 carrying the plate-carrying cylinders 8 and blanket 9, the supply to the bellows cylinder 22 is cut off so that the lower counterpart cylinder comes into its lowest extreme position, below the lower edges of the flanges 12, 13. The supply to the jacks 34 is then cut off. As a result, the cassette 11 falls, under the effect of its own weight, onto the two guide support rails 28, 29. In a first time, the cassette pivots around the cylindrical part of the right support rail 28 until the roller 25 comes into contact with the groove 29a. Then there is a slight sliding to the left until the roller 25 reaches the bottom of the groove and the right roller 24 comes to bear on the upper flat 28a of the upper right rail 28. Then the two are tilted front support arms 37 from their vertical position retracted into a horizontal position as shown in solid lines in FIG. 5. The link arm 51 is still in its vertical position shown in FIG. 4, in which its lower end is engaged in the 'notch 49. From this moment, the front flange 12 and therefore the entire cassette 11 are connected in translation to the console 48 and the lower movable support 44. Then pulls forward on the cassette 11 to remove it from the frame of the device. This movement causes the lower movable support 44 to exit, which comes to occupy, at full extension, the position indicated in phantom in Figure 6. At the start of the movement, the four upper rollers 24, 25 are carried by the two guide support rails. 28, 29 then shortly afterwards only the rollers 24, 25 carried by the rear flange 13 remain in abutment on these rails, since the corresponding rollers 24, 25 carried by the front flange 12 have left the rails. From this moment the weight of the cassette is partially taken up by the front end overhanging the lower movable support 44. When the cassette 11 is completely removed from the appliance. printing reel, as indicated in phantom in FIG. 6, the lower rollers 26, 27 carried by the rear flange 13 have come to bear on the horizontal arms 37 and they thus support the cassette 11 in its part posterior. The front part of the cassette is still supported by the console 48 integral with the front end of the movable support 44. The cassette 11 then being completely removed from the printing apparatus, it is easy to lift it by means of a lifting member such as a hoist and replace it with another cassette 11 carrying the plate-carrying cylinders 8a and blanket 9a corresponding to the small format.

L'opération d'introduction de la nouvelle cassette 11 dans l'appareil d'impression s'effectue en sens inverse. On repousse l'ensemble mobile vers l'intérieur de l'appareil, jusqu'à ce que le support mobile inférieur 44 et la cassette 11 soient totalement escamotés à l'intérieur. Un vérin d'amortissement 50 qui est porté par le support mobile 44, vient alors en cotact avec une butée 50a portée par le socle de l'appareil pour éviter tout choc brutal lors de la rentrée de la cassette 11. Ensuite, on alimente les vérins 34 de manière à appliquer le nouveau cylindre porte-plaque 8a contre les cylindres toucheurs 6, 7. Dans un premier temps, les flasques 12, 13 sont déplacés en direction du rail supérieur 28, jusqu'à ce que l'encoche 31 de chacun de ces flasques vienne en contact avec la surface cylindrique du rail. Ensuite, la poursuite de l'effort F entraîne un mouvement de pivotement de l'ensemble de la cassette 11 autour de l'axe du rail supérieur droit 28 ce qui a pour effet d'appliquer sous pression le nouveau cylindre porte-plaque 8a contre les deux cylindres toucheurs droits 5 et central 6. Le troisième cylindre toucheur 7, situé à gauche des précédents, vient alors se caler, sous la commande d'un vérin non représenté, sur une butée préréglée de la cassette 11 que l'on vient d'introduire. Les cales réglables 35 qui sont restées en position, permettent de retrouver la même touche que celle réglée antérieurement.The operation of inserting the new cassette 11 into the printing apparatus is carried out in the reverse direction. The mobile assembly is pushed back towards the interior of the device, until the lower mobile support 44 and the cassette 11 are completely retracted inside. A damping cylinder 50 which is carried by the movable support 44, then comes in cotact with a stop 50a carried by the base of the apparatus to avoid any brutal shock during the retraction of the cassette 11. Then, the jacks 34 so as to apply the new plate cylinder 8a against the touching cylinders 6, 7. Firstly, the flanges 12, 13 are moved in the direction of the upper rail 28, until the notch 31 of each of these flanges comes into contact with the cylindrical surface of the rail. Then, the continuation of the force F causes a pivoting movement of the assembly of the cassette 11 around the axis of the right upper rail 28 which has the effect of applying under pressure the new plate cylinder 8a against the two right and central touching cylinders 5 and 6. The third touching cylinder 7, located to the left of the preceding ones, then comes to stall, under the control of a jack not shown, on a preset stop of the cassette 11 which has just been to introduce. The adjustable shims 35 which have remained in position allow the same key to be found as that previously adjusted.

Claims (6)

1. Offset printing machine with variable format comprising a frame formed by two front and rear longitudinal uprights (1) and (2), this frame bearing at least one inking roller (5, 6, 7) receiving a layer of ink from an inking device (3, 4) and a layer of damping solution from a damping device (10), a plate-holder cylinder (8) tangential to the inking roller (5, 6, 7), a blanket cylinder (9) tangential to the plate-holder cylinder (9) and an impression cylinder (17) mounted on a mobile support (18) so as to be able to be applied under pressure against the blanket cylinder (9), the sheet to be printed passing between this blanket cylinder (9) and the impression cylinder (17), the plate-holder cylinder (8) and the blanket cylinder (9) being mounted to rotate between two vertical and longitudinal side elements (12, 13) connected together by crosspieces (20) and forming therewith a cassette (11) which is transversely mobile, i.e. perpendicularly to the direction of advance of the printed sheet, and being able to be removed from the frame of the machine through an opening (1a) provided in the front longitudinal upright (1) of the frame, two upper transverse rails (28, 29) extending between the two uprights (1, 2) of the frame of the machine and from which is suspended the cassette (11), during a movement of introduction or of removal thereof, via upper rollers (24, 25) of horizontal and longitudinal axes mounted in the upper part of the cassette (11) and a lower support (37; 44, 54) on which the cassette (11) rolls during a movement of introduction or removal vial lower rollers (26, 27) of horizontal and longitudinal axes mounted in the lower part of the cassette (11), characterized in that the two upper transverse rails (28, 29) project forwardly with respect to the front longitudinal upright (1), the lower support of the cassette (11) comprises, on the one hand, two lower horizontal arms (37) which are mounted to pivot on the outer face of the front upright (1) of the frame so as to be able to be retracted along the front upright (1), in a substantially vertical position, when they are not used for the introduction or removal of a cassette (11), or on the contrary to extend horizontally forwardly, beyond said upper transverse rails (28, 29), during these operations, in order to support the rear side element (13) of the cassette (11), after said upper rollers (24, 25) have left said upper rails (28, 29) and, on the ather hand, a support (44) on which rests the front side element (12) of the cassette (11) and which is (44) mobile transversely under the impression cylinder (17), being able to be pulled forwardly jointly with said cassette (11) so as to be overhang with respect to the front upright (1) of the machine, in order to support the front vertical and longitudinal side element (12) of the cassette (11), when the latter is pulled totally outside the machine.
2. Machine according to Claim 1, characterized in that a drive pinion (16), rotated by a general control motor, is mounted to rotate on the rear upright (2) of the frame of the machine and this drive pinion (16) is always in mesh, whatever the format of the print, with a pinion (15) fast with the shaft of the blanket cylinder (9), which pinion (15) is in turn in mesh with a pinion (14) fast with the shaft of the plate-holder cylinder (8) mounted on the same cassette (11).
3. Machine according to either one of the preceding Claims, characterized in that the impression cylinder (17) is mounted idly between two side elements constituting a mobile support (18) mounted to pivot about a transverse axis (19) and of which the position is adjusted by means of a jack (22) disposed beneath the pivoting support (18) and abutting on a base (23) forming part of the frame of the machine.
4. Machine according to any one of the preceding Claims, characterized in that a first upper transverse rail (28) is constituted by a portion of cylindrical bar presenting an upper horizontal flat portion (28a) on which the upper rollers (24) located above the rail may roll, each of the vertical side elements (12, 13) of the cassette (11) presents, in its vertical edge facing the first rail (28), a notch (31) in the form of an arc of circle of which the radius correspondens to that of the cylindrical part of the first rail (28) and made at a height, with respect to the lower edge of the side element (12, 13) such that, when the cassette (11) is introduced into the machine, this notch (31) lies substantially at the level of the first rail (28), the second upper transverse rail (29) presents in its upper face, a groove (29a) presenting a triangular cross section and each upper roller (25) disposed above the second rail (29) has a biconical form, and each of the side element (12, 13) of the cassette (11) presents, in its vertical edge close to the second rail (29), a notch (32) of which the upper side (32a), inclined with respect to the horizontal, constitutes a support surface for the end of the rod (33) of a jack (34), each jack (34) being mounted, on the associated upright (1, 2) of the frame, so as to be inclined and its axis is perpendicular to the support surface (32a) of the corresponding side element (12, 13).
5. Machine according to any one of the preceding Claims, characterized in that each of the side elements (12, 13) of the cassette (11) is in abutment, by its upper horizontal edge, against an adjustable stop (35) whose position may be adjusted by means of a rod (36) of which the threaded end part (36a) is screwed in a tapped hole made in the stop (35).
6. Machine according to Claim 4, characterized in that at least one of the side elements (12, 13) of the cassette (11) presents, in its upper horizontal edge, a horizontal groove (13a) of V-cross section in which is engaged the lower part, likewise of V-section, of the adjustable stop (35), the axis of the adjusting rod (36) is slightly inclined with respect to the horizontal and the lower edge (35a) of the stop (35) is in turn inclined by the same angle with respect to the axis of the rod (36) so that this edge (35a) extends horizontally.
EP83401042A 1982-05-25 1983-05-25 Variable-size offset printing apparatus Expired EP0095423B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83401042T ATE23130T1 (en) 1982-05-25 1983-05-25 OFFSET PRINTING MACHINE FOR DIFFERENT FORMATS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8209006 1982-05-25
FR8209006A FR2527519A1 (en) 1982-05-25 1982-05-25 OFFSET PRINTING APPARATUS WITH VARIABLE FORMAT

Publications (2)

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EP0095423A1 EP0095423A1 (en) 1983-11-30
EP0095423B1 true EP0095423B1 (en) 1986-10-29

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EP83401042A Expired EP0095423B1 (en) 1982-05-25 1983-05-25 Variable-size offset printing apparatus

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US (1) US4462311A (en)
EP (1) EP0095423B1 (en)
JP (1) JPS5931162A (en)
AT (1) ATE23130T1 (en)
DE (1) DE3367185D1 (en)
FR (1) FR2527519A1 (en)
SU (1) SU1384191A3 (en)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8602561D0 (en) * 1986-02-03 1986-03-12 Morgan J H Printing apparatus
US5074205A (en) * 1986-02-03 1991-12-24 Morgan John H Printing apparatus
GB8611722D0 (en) * 1986-05-14 1986-06-25 Drg Uk Ltd Processing paper & other webs
USRE34483E (en) * 1986-05-14 1993-12-21 Strachan Henshaw Machinery Limited Processing paper and other webs
FR2633871B1 (en) * 1988-07-07 1991-05-17 Sarda Jean MULTI-COLORED OFFSET PRINTS, VARIABLE FORMAT, FOR PRINTING CONTINUOUS TAPES
US5421258A (en) * 1992-03-17 1995-06-06 John Marozzi Flexographic printing system
US5224422A (en) * 1992-03-17 1993-07-06 John Marozzi Flexographic printing system
FR2689448B1 (en) * 1992-04-03 1994-06-24 Komori Chambon OFFSET PRINTING APPARATUS.
IT1255333B (en) * 1992-07-10 1995-10-31 PRINTING ELEMENT FOR A ROTARY MACHINE, EQUIPPED WITH MORE TROLLEYS SUPPORTING A PRINT CYLINDER
US5400709A (en) * 1992-09-21 1995-03-28 Comco Machinery, Inc. Rotary print head module and impression bar
US5540149A (en) * 1993-10-26 1996-07-30 Magnum Manufacturing Limited Rotary printing machines
EP0757627B1 (en) * 1994-04-28 1998-07-08 Nilpeter A/S A printing apparatus comprising at least one printing module
NL1000306C2 (en) * 1995-05-04 1996-11-05 Stork X Cel Bv Rotary screen printing machine.
DE19611559A1 (en) * 1996-03-23 1997-09-25 Koenig & Bauer Albert Ag Sheet processing machine
US5706728A (en) * 1996-07-30 1998-01-13 Rdp Marathon Inc. Printing apparatus
US5806427A (en) * 1997-08-29 1998-09-15 Goss Graphic Systems, Inc. Printing press having carriage mounted interchangeable plate cylinders
US5868071A (en) * 1997-09-02 1999-02-09 Goss Graphic Systems, Inc. Variable cutoff printing press
DE19849633A1 (en) * 1998-10-28 2000-05-04 Heidelberger Druckmasch Ag Positioning device in a printing press
US6038972A (en) * 1998-12-29 2000-03-21 Paper Converting Machine Company Quick change system for a press
US6289811B1 (en) 2000-01-11 2001-09-18 Paper Converting Machine Co. Method and apparatus for sampling and inspecting ink for a printing press
DE10028476A1 (en) 2000-06-08 2001-12-13 Roland Man Druckmasch Doctor blade device for clearing water from soft surface of printer roller has blade edge radius of 2 to 10 millimetres
FR2843070B1 (en) * 2002-07-31 2005-02-18 Komori Chambon PRINTING MACHINE
EP1559546A1 (en) * 2004-01-28 2005-08-03 RDP Marathon Inc. Printing unit convertible between at least two printing modes
US7270057B2 (en) 2004-01-28 2007-09-18 Rdp Marathon Inc. Rolling element adjustment system
EP1775124A1 (en) * 2005-10-13 2007-04-18 Kba-Giori S.A. Printing machine with modulator additional printing group
WO2010059842A1 (en) * 2008-11-21 2010-05-27 Goss International Americas, Inc. Variable cutoff alignment apparatus and method of aligning printing cylinders during a cutoff change
JP5791209B2 (en) * 2014-02-28 2015-10-07 西研グラフィックス株式会社 1x version cylinder replacement method and 2x version cylinder press

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH210618A (en) * 1938-06-01 1940-07-31 Vomag Maschinenfabrik Ag Storage of the forme cylinder in rotogravure printing machines.
US3323452A (en) * 1965-01-15 1967-06-06 Miehle Goss Dexter Inc Variable cut-off web offset press
FR1445071A (en) * 1965-08-04 1966-07-08 Thomas De La Rue Engineering L Pressure cylinder mounting device for printing machines
US3611924A (en) * 1969-10-23 1971-10-12 Nat Productive Machines Inc Rotary offset printing press with cylinder interrupter
US3613577A (en) * 1970-06-04 1971-10-19 Halley & Sons Ltd James Rotary web processing machines
CS150840B1 (en) * 1971-05-18 1973-09-17
US4046070A (en) * 1974-04-22 1977-09-06 James Halley & Sons Limited Rotary printing presses
JPS5219481A (en) * 1975-08-04 1977-02-14 Nec Home Electronics Ltd Lighting device for use in a discharge lamp
FR2350198A1 (en) * 1976-05-07 1977-12-02 Chambon Machines MULTI-COLOR ROTARY PRINTER
DE2949872A1 (en) * 1978-12-14 1980-07-03 Didde Glaser Inc PRINTING UNIT FOR A BEAUTIFUL AND REPRINT OFFSET ROLLER ROTATION PRINTING MACHINE WITH HORIZONTAL RAILWAY IMPLEMENTATION
CA1101727A (en) * 1978-12-14 1981-05-26 Didde Graphic Systems Corporation Modular offset lithographic printing tower
FR2451265A1 (en) * 1979-03-15 1980-10-10 Biggar Frank QUICK CHANGE PRINTING DEVICE

Also Published As

Publication number Publication date
SU1384191A3 (en) 1988-03-23
JPS5931162A (en) 1984-02-20
EP0095423A1 (en) 1983-11-30
DE3367185D1 (en) 1986-12-04
US4462311A (en) 1984-07-31
JPH0373465B2 (en) 1991-11-21
FR2527519A1 (en) 1983-12-02
FR2527519B1 (en) 1985-01-18
ATE23130T1 (en) 1986-11-15

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