EP0095423B1 - Appareil d'impression offset à format variable - Google Patents

Appareil d'impression offset à format variable 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
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0095423A1 (fr
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
Original Assignee
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/de
Publication of EP0095423A1 publication Critical patent/EP0095423A1/fr
Application granted granted Critical
Publication of EP0095423B1 publication Critical patent/EP0095423B1/fr
Expired legal-status Critical Current

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Classifications

    • 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.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Presses (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Electrostatic Charge, Transfer And Separation In Electrography (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
EP83401042A 1982-05-25 1983-05-25 Appareil d'impression offset à format variable Expired EP0095423B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83401042T ATE23130T1 (de) 1982-05-25 1983-05-25 Offset-druckapparat fuer verschiedene formate.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8209006 1982-05-25
FR8209006A FR2527519A1 (fr) 1982-05-25 1982-05-25 Appareil d'impression offset a format variable

Publications (2)

Publication Number Publication Date
EP0095423A1 EP0095423A1 (fr) 1983-11-30
EP0095423B1 true EP0095423B1 (fr) 1986-10-29

Family

ID=9274279

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83401042A Expired EP0095423B1 (fr) 1982-05-25 1983-05-25 Appareil d'impression offset à format variable

Country Status (7)

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

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
USRE34483E (en) * 1986-05-14 1993-12-21 Strachan Henshaw Machinery Limited Processing paper and other webs
GB8611722D0 (en) * 1986-05-14 1986-06-25 Drg Uk Ltd Processing paper & other webs
FR2633871B1 (fr) * 1988-07-07 1991-05-17 Sarda Jean Presses a imprimer offset multicolores, a format variable, pour impression de bandes continues
US5224422A (en) * 1992-03-17 1993-07-06 John Marozzi Flexographic printing system
US5421258A (en) * 1992-03-17 1995-06-06 John Marozzi Flexographic printing system
FR2689448B1 (fr) * 1992-04-03 1994-06-24 Komori Chambon Appareil d'impression offset.
IT1255333B (it) * 1992-07-10 1995-10-31 Elemento stampa per una macchina rotativa, munito di piu' carrelli supportanti un cilindro stampa
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
AU2405795A (en) * 1994-04-28 1995-11-29 Nilpeter A/S A printing apparatus comprising at least one printing module
NL1000306C2 (nl) * 1995-05-04 1996-11-05 Stork X Cel Bv Rotatiezeefdrukmachine.
DE19611559A1 (de) * 1996-03-23 1997-09-25 Koenig & Bauer Albert Ag Bogenverarbeitungsmaschine
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 (de) * 1998-10-28 2000-05-04 Heidelberger Druckmasch Ag Positioniervorrichtung in einer Druckmaschine
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 (de) 2000-06-08 2001-12-13 Roland Man Druckmasch Rakelvorrichtung
FR2843070B1 (fr) * 2002-07-31 2005-02-18 Komori Chambon Machine a imprimer
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 (ja) * 2014-02-28 2015-10-07 西研グラフィックス株式会社 ２倍版胴輪転機の１倍版胴取替方法及び輪転機

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CH210618A (de) * 1938-06-01 1940-07-31 Vomag Maschinenfabrik Ag Lagerung des Formzylinders bei Rotationstiefdruckmaschinen.
US3323452A (en) * 1965-01-15 1967-06-06 Miehle Goss Dexter Inc Variable cut-off web offset press
FR1445071A (fr) * 1965-08-04 1966-07-08 Thomas De La Rue Engineering L Dispositif de montage des cylindres de pression pour machines d'impression
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 (ru) * 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 (fr) * 1976-05-07 1977-12-02 Chambon Machines Imprimeuse rotative a plusieurs couleurs
DE2949872A1 (de) * 1978-12-14 1980-07-03 Didde Glaser Inc Druckeinheit fuer eine schoen- und widerdruck-offset-rollenrotationsdruckmaschine mit horizontaler bahndurchfuehrung
CA1101727A (en) * 1978-12-14 1981-05-26 Didde Graphic Systems Corporation Modular offset lithographic printing tower
CA1155001A (en) * 1979-03-15 1983-10-11 Frank M. Biggar, Iii Rapid changeover die and print stations

Also Published As

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

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