EP0564372B1 - Offsetdruckmaschine - Google Patents

Offsetdruckmaschine Download PDF

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Publication number
EP0564372B1
EP0564372B1 EP93400869A EP93400869A EP0564372B1 EP 0564372 B1 EP0564372 B1 EP 0564372B1 EP 93400869 A EP93400869 A EP 93400869A EP 93400869 A EP93400869 A EP 93400869A EP 0564372 B1 EP0564372 B1 EP 0564372B1
Authority
EP
European Patent Office
Prior art keywords
plate
cylinder
sleeve
axis
bearings
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 - Lifetime
Application number
EP93400869A
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English (en)
French (fr)
Other versions
EP0564372A1 (de
Inventor
Jean-Louis Guarino
Bernard Six
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.)
Komori Chambon SA
Original Assignee
Komori 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 Komori Chambon SA filed Critical Komori Chambon SA
Publication of EP0564372A1 publication Critical patent/EP0564372A1/de
Application granted granted Critical
Publication of EP0564372B1 publication Critical patent/EP0564372B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/08—Cylinders
    • B41F13/24—Cylinder-tripping devices; Cylinder-impression adjustments
    • B41F13/26—Arrangement of cylinder bearings
    • B41F13/28—Bearings mounted eccentrically of the cylinder axis

Definitions

  • the present invention relates to an offset printing apparatus.
  • Offset printing machines generally include a plate cylinder tangent to a blanket cylinder, with a flexible surface layer, which transfers a layer of ink onto a sheet of printing material traveling between the blanket cylinder and a counterpart cylinder applied under pressure. against the previous one, this counterpart cylinder can be constituted by a blanket cylinder in the case of a double-sided printing on the web.
  • the plate cylinder and the blanket cylinder are mounted between the two lateral flanges of a removable cassette which can be moved transversely relative to the printing device, that is to say perpendicular to the direction of travel. of the tablecloth to be printed (EP-A-0 095 423).
  • the various settings necessary for printing are obtained by setting the cylinders either using eccentrics or by applying the cylinders to sloping wedges.
  • the setting between the plate cylinder and the blanket cylinder is carried out by a displacement of the blanket cylinder
  • biasing that is to say the slight relative inclination of the axes of the plate and blanket cylinders
  • the timing between the blanket cylinder and the counter cylinder (or other blanket cylinder) is achieved by the displacement of the counter cylinder.
  • the blanket cylinder must be as rigid as possible and to do this we must produce, with a view to moving the blanket cylinder, eccentrics with clearances of a few micrometers and most often with a supply of a lubricant under pressure in order to have a relatively easy maneuver and minimal wear over time.
  • This type of solution is therefore relatively expensive to have a correct printing function.
  • the present invention aims to remedy this drawback by providing an offset printing device of the removable cassette type with a reduced overall cost due to a great simplification of its mounting.
  • this offset printing apparatus comprising a frame in which can be mounted a removable cassette carrying a plate cylinder and a blanket cylinder with axes parallel and tangent to each other, a tablecloth to be printed scrolling between the blanket cylinder and a counterpart cylinder, mounted movably on the frame of the apparatus and which can be applied against the blanket cylinder, the plate and blanket cylinders being engaged in front bearings and in rear bearings carried respectively by front flanges and rear of the cassette, is characterized in that the bearings of the blanket cylinder are fixedly mounted on the flanges of the cassette, in that the bearings of the plate cylinder comprise means for adjusting the position of the axis of the plate cylinder and in that each of the front and rear flanges of the cassette carries a connection mechanism between mobile control means of the printing apparatus and the means for adjusting the bearings of the plate cylinder, to adjust the position of the axis of this cylinder according to the printing conditions required.
  • the offset printing apparatus which is shown in a simplified form in FIG. 1, comprises a frame 1 consisting essentially of longitudinal and vertical uprights, mutually parallel, connected by cross members not shown and between which extend horizontally and transversely the different cylinders of the printing apparatus.
  • the term “longitudinal” means parallel to the direction of travel of a web 2 to be printed passing through the apparatus, while the term “transverse” means "horizontal and perpendicular to the direction of travel of the web" or "perpendicular to the plane of the drawing figure".
  • this apparatus comprises an upper touch cylinder 3, mounted for rotation on the frame 1 of the apparatus and depositing a film of ink on a cylinder plate holder 4 arranged below it.
  • This plate cylinder 4 is tangent to a lower blanket cylinder 5 and is mounted, together with this blanket cylinder 5, on a removable cassette 6.
  • This cassette 6 essentially comprises two lateral, vertical and longitudinal flanges, namely a front flange 7 and a rear flange 8 braced by suitable horizontal crosspieces, not shown.
  • the two flanges 7,8 constitute supports for respective shafts 9,10 of the plate 4 and blanket 5 cylinders 5.
  • the whole of the cassette 6 can be pulled, in the horizontal and transverse direction, outside the frame 1 of the printing device and set place inside this frame 1, for example by passing through an opening 1 a provided in the front upright of the frame 1.
  • the printing apparatus comprises a counterpart cylinder 11, of axis transverse. It should be noted that, in certain devices allowing double-sided printing on the web 2, the counterpart cylinder 11 also constitutes a second blanket cylinder.
  • the impression cylinder 11 is carried by a movable element vertically so as to be able to occupy a lowermost position indicated in phantom in Figure 1 and in which it is retracted below the lower edge of the opening 1a of the frame 1. In this retracted position, the counterpart cylinder 11 allows the cassette 6 to be removed from the outside of the printing apparatus and reintroduced therein by a movement in the transverse direction. On the other hand, in the printing position it is in the high position, as shown in FIG. 1, and it is tangent to the lower part of the blanket cylinder 5, the sheet to be printed 2 then being clamped between the two cylinders 5 and 11.
  • the mobile assembly carrying the counterpart cylinder 11 can be constituted, for example, by a support oscillating around an axis 11a.
  • the shaft 9 of the plate cylinder 4 is extended at its ends by front pins 9a and rear 9b housed respectively in front bearings 12 and rear 12a.
  • the shaft 10 of the blanket cylinder 5 is extended at its ends by front pins 10a and rear 10b housed respectively in front bearings 13 and rear 13a.
  • the two bearings 13, 13a supporting the shaft 10 of the blanket cylinder 5 are fixedly mounted respectively on the front flanges 7 and rear 8 of the cassette 6, while, the bearings 12,12a supporting the shaft 9 of plate cylinder 4 are mounted adjustable on these flanges.
  • each of the bearings 12, 12a of the shaft 9 comprises a bearing 14, for example with needles, in which the corresponding pin 9a, 9b is engaged and which is housed in an eccentric bore of a sleeve 15.
  • This sleeve 15 is fixed at one end, by means of screws 16, to an operating collar 17 situated, for example, on the internal side of the corresponding flange 7.8. Because the bore of the sleeve 15 which receives the bearing 14, is eccentric relative to the axis of this sleeve 15, a rotation of the sleeve 15 about its axis causes a vertical displacement of the axis of the bearing 14, c that is to say of the shaft 9 of the plate cylinder 4.
  • the assembly constituted by the sleeve 15 and its operating collar 17 will be considered subsequently as constituting an eccentric.
  • the control of the rotational movement of this eccentric is carried out, on each of the flanges 7,8, by the same connection mechanism and we will now describe only, with particular reference to Figures 1 and 3, the connection mechanism 18 which is mounted on the rear flange 8 of the cassette and which controls the adjustment of the rear bearing 12a.
  • This mechanism comprises a vertical bar 19 which is mounted vertically movable and which extends close to the internal face of the rear flange 8, along one of its vertical edges.
  • This operating bar 19 is intended to be actuated, at its lower end, by a control device provided on the frame of the printing apparatus, in order to lift it.
  • the bar 19 may have, in its lower end portion, a notch 20 which can be coupled with an operating member forming part of the control device.
  • the bar 19 is returned to the lower extreme position by a tension spring 21 which extends vertically and which is hooked, at its upper end, to a finger 22 secured to the bar 19 and, at its lower end, to a finger 23 fixed to the flange 8.
  • This finger 23 is engaged through a vertical oblong opening 24 pierced in the bar 19, in order to limit the vertical movement of the latter.
  • the operating bar 19 is articulated around an axis 25, on the end of a branch of a bent return lever 26 pivotally mounted on the flange 8, around a horizontal axis and transverse 27.
  • the other branch of the bent lever 26 is articulated, around an axis 28, on one end of a substantially horizontal rod 29 whose other end is articulated, around an axis 31, on the lower part of the collar 17 forming part of the eccentric 15-17.
  • the vertical operating bar 18 is shown in the extreme upper position in which it is raised by the control device of the printing apparatus and this position corresponds to a position of the eccentric 15-17 for which the axis from the landing 12a and consequently of the shaft 9 is in the lower extreme position.
  • the operating bar 18 is no longer held raised, it is returned downwards by its return spring 21, which causes a rotation of the eccentric 15-17 and an offset of the axis of the bearing 14 and tree 9 upwards.
  • the upper extreme position of the operating bar 19 and consequently the extreme rotational position of the eccentric 15-17 are determined by an adjustable stop 32 with adjusting screw 33.
  • This adjustable stop 32 which determines the position set in pressure, is fixed on the internal face of the flange 8 and the adjusting screw is mounted in this stop so that its end is in contact with a bearing surface 34 provided in the lower part of the flange 17.
  • One of the bearings of the shaft 9 of the plate cylinder 4, in the example described the front bearing 12, is furthermore somewhat adjustable in the horizontal and longitudinal direction, in order to allow adjustment of the bias between the two.
  • cylinders 4 and 5 that is to say of the mutual inclination, in a horizontal plane, of their respective axes.
  • the sleeve 15 of the eccentric 15-17 of the bearing 12a is itself housed in a second bearing 35, for example with needles, disposed inside an eccentric bore of a second sleeve 36 mounted at rotation, about its axis, in the front flange 7 by means of a third bearing 37.
  • the sleeve 36 with an eccentric bore is integral with the outside of the front flange 7, of a flange 38 carrying an operating pin 39. Consequently when the second sleeve 36 is rotated, one causes a horizontal displacement, in one direction or the other, of the first sleeve 15 and the journal 9a of the shaft 9, which thus makes it possible to adjust the bias of this shaft relative to the shaft 10 of the blanket cylinder 5.
  • the two cylinders 4,5 are driven in rotation at the rear of the device.
  • the rear pins 9b, 10b of the two shafts 9 and 10 are respectively secured to two pinions 41 and 42, of the same pitch diameter, engaged with one another.
  • one of the pinions 41, 42 in turn engages a drive pinion, not shown, which is rotatably mounted on the frame 1 of the printing apparatus and which is rotated by a general control device of the apparatus. Therefore the two plate cylinders 4 and blanket 5 are rotated in opposite directions to one another, at the same peripheral speed.
  • the shaft 9 of the plate cylinder 4 is also mounted so that it can slide transversely to allow lateral adjustment of the plate plate that the cylinder 4 carries.
  • the front journal 9a of the shaft 9 is subjected to the action of a compression spring 43 tending to push the shaft 9 towards the rear flange 8.
  • This compression spring can advantageously consist of a stack of Belleville washers contained in a casing 44.
  • the rear pin 9b of the shaft 9 is housed in rotation, by means of a bearing 45, in a thrust bearing 46 mounted at sliding in an opening of a casing 47 fixed to the outside of the rear flange 8.
  • the thrust bearing 46 is intended to cooperate with a movable adjustment arm, not shown, provided at the rear of the device. This arm therefore allows, by sliding more or less the thrust bearing 46 in the opening of the housing 47, to more or less push the shaft 9 forward and thus adjust the plate in the lateral direction.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Presses (AREA)

Claims (8)

  1. Offsetdruckmaschine mit variablem Format, die einen Rahmen (1) aufweist, in dem eine lösbare Kassette (6) angebracht sein kann, die einen Druckträgerzylinder (4) und einen Drucktuchzylinder (5), die einander berühren und zueinander parallele Achsen aufweisen, trägt, eine zu bedruckende Bahn (2), die zwischen dem Drucktuchzylinder (5) und einem Gegenzylinder (11) läuft, der auf dem Rahmen (1) der Maschine beweglich angebracht ist und gegen den Drucktuchzylinder (5) angelegt werden kann, wobei die Druckträger- (4) und Drucktuchzylinder (5) in vorderen Lagern (12, 13) und in hinteren Lagern (12a, 13a) eingerückt sind, die jeweils mittels vorderer (7) und hinterer Flansche (8) der Kassette (6) getragen sind,
    dadurch gekennzeichnet, daß die Lager (13, 13a) des Drucktuchzylinders (5) auf den Flanschen (7, 8) der Kassette (6) feststehend angebracht sind, daß die Lager (12, 12a) des Druckträgerzylinders (4) Mittel zur Regelung der Position der Achse des Druckträgerzylinders (4) aufweisen, und daß jeder der vorderen (7) und hinteren Flansche (8) der Kassette (6) einen Verbindungsmechanismus (18-31) zwischen beweglichen Steuermitteln der Druckmaschine und den Regelmitteln der Lager (12, 12a) des Druckträgerzylinders (4) trägt, um die Position der Achse dieses Zylinders als Funktion der geforderten Druckbedingungen einzustellen.
  2. Maschine nach Anspruch 1,
    dadurch gekennzeichnet, daß jedes der vorderen und hinteren Lager (12, 12a) des Druckträgerzylinders (4) Mittel zum Regeln der Position der Achse des Druckträgerzylinders (4) in bezug auf die Position der Achse des Drucktuchzylinders (5) aufweist.
  3. Maschine nach Anspruch 2,
    dadurch gekennzeichnet, daß die Mittel zur Regelung der Position der Achse des Druckträgerzylinders (4) in bezug auf die Achse des Drucktuchzylinders (5) in vertikaler Richtung ein erstes Wälzlager (14) aufweisen, in dem der äußerste Teil (9a) der Welle (9) des Druckträgerzylinders (4) eingerückt ist und das in einer exzentrischen Bohrung einer Muffe (15) gelagert ist, die um ihre Achse rotierend im entsprechenden Flansch (7, 8) angebracht ist.
  4. Maschine nach Anspruch 3,
    dadurch gekennzeichnet, daß die erste Muffe (15) an einem Ende mit einem Betätigungskragen (17) fest verbunden ist, der auf einer Seite des entsprechenden Flansches (7, 8) liegt und mit dem Verbindungsmechanismus (18-31) gekoppelt ist.
  5. Maschine nach Anspruch 4,
    dadurch gekennzeichnet, daß der Kragen (17) der Muffe (15) eine Auflagefläche aufweist, die mit einem verstellbaren Anschlag (32) in Kontakt kommt, der mittels des Flansches getragen ist, um die Drehung der Muffe (15) zu begrenzen und die druckverkeilte Position zu bestimmen.
  6. Maschine nach Anspruch 4 oder 5,
    dadurch gekennzeichnet, daß der Verbindungsmechanismus eine Betätigungsstange (19) aufweist, die vertikal beweglich längs des entsprechenden Flansches (7, 8) angebracht ist, mittels einer Feder (21) in die untere Endstellung rückgestellt ist und mittels beweglicher Steuermittel der Druckmaschine angehoben werden kann, wobei diese Betätigungsstange (19) mittels eines abgewinkelten Umlenkhebels (26) und eines Zwischenglieds (29) an den Kragen (17) angekoppelt ist, der mit der ersten Muffe fest verbunden ist.
  7. Maschine nach einem der Ansprüche 3 bis 6,
    dadurch gekennzeichnet, daß die Mittel zur Regelung der Position der Achse des Druckträgerzylinders ein zweites Wälzlager (35) aufweisen, in dem die erste Muffe (15) gelagert ist und das selbst innerhalb einer exzentrischen Bohrung einer zweiten Muffe (36) angeordnet ist, die um ihre Achse sich drehend in dem entsprechenden Flansch (7) angebracht ist, wobei mittels eines dritten Wälzlagers (37) die zweite Muffe (36) mit exzentrischer Bohrung außerhalb des Flansches mit einem Betätigungsorgan (38, 39) fest verbunden ist, das gestattet, sie in Drehung zu versetzen.
  8. Maschine nach einem der vorangehenden Ansprüche,
    dadurch gekennzeichnet, daß die Welle (9) des Druckträgerzylinders (4) derart angebracht ist, daß sie in den Lagern (12, 12a) axial gleiten kann, wobei sie in einer Richtung an einem ihrer Enden axial mittels einer Feder (43) derart beansprucht ist, daß sie ständig in Richtung des anderen Flansches (8) zurückgedrängt ist, und an ihrem anderen Ende außerhalb des anderen Flansches (8) vorspringend ein Drucklager (46) angebracht ist, das mittels eines beweglichen Regelarms, der auf der Maschine angebracht ist, axial betätigt werden kann.
EP93400869A 1992-04-03 1993-04-02 Offsetdruckmaschine Expired - Lifetime EP0564372B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR929204114A FR2689448B1 (fr) 1992-04-03 1992-04-03 Appareil d'impression offset.
FR9204114 1992-04-03

Publications (2)

Publication Number Publication Date
EP0564372A1 EP0564372A1 (de) 1993-10-06
EP0564372B1 true EP0564372B1 (de) 1996-10-16

Family

ID=9428478

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93400869A Expired - Lifetime EP0564372B1 (de) 1992-04-03 1993-04-02 Offsetdruckmaschine

Country Status (4)

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US (1) US5272974A (de)
EP (1) EP0564372B1 (de)
DE (1) DE69305404T2 (de)
FR (1) FR2689448B1 (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5706728A (en) * 1996-07-30 1998-01-13 Rdp Marathon Inc. Printing apparatus
DE19943027C5 (de) * 1998-10-28 2016-11-17 Heidelberger Druckmaschinen Ag Positioniervorrichtung in einer Druckmaschine
DE19849633A1 (de) * 1998-10-28 2000-05-04 Heidelberger Druckmasch Ag Positioniervorrichtung in einer Druckmaschine
US20080236419A1 (en) * 2005-08-30 2008-10-02 Jose Betes Peruga Roller Cassette for Semi-Rotary Machines, Which Can Be Inserted Into Offset Printing Units
JP4878854B2 (ja) * 2006-01-31 2012-02-15 三菱重工印刷紙工機械株式会社 印刷機
EP1950037A3 (de) * 2007-01-25 2009-12-23 Komori Corporation Überschalt-Verarbeitungsverfahren und Vorrichtung
US20110132216A1 (en) * 2009-12-09 2011-06-09 7242514 Canada Inc. Stack angle compensation arrangement for a skewing adjustment system in an offset printing press
WO2014073852A1 (ko) * 2012-11-06 2014-05-15 주식회사 엘지화학 롤 프린팅 장치 및 이를 이용한 롤 프린팅 방법

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US913119A (en) * 1908-03-23 1909-02-23 Fuchs And Lang Mfg Company Throw-out mechanism.
US1231932A (en) * 1914-05-15 1917-07-03 Corp Of Maschinenfabrik Johannisberg G M B H Rotary printing or embossing machine.
US1330793A (en) * 1916-04-04 1920-02-17 Gustav A Friess Cylinder-adjusting mechanism for printing-presses
US1816796A (en) * 1930-01-16 1931-07-28 Firm Rock Stroh Werke Ag Rotary offset printing machine
DE1436541A1 (de) * 1964-04-02 1969-02-06 Roland Offsetmaschf Rollenrotations-Druckmaschine
DD138866A3 (de) * 1977-05-17 1979-11-28 Heinz Skiera Vorrichtung zum diagonalverstellen der formzylinder,insbesondere einer rollenrotationsdruckmaschine
FR2527519A1 (fr) * 1982-05-25 1983-12-02 Chambon Machines Appareil d'impression offset a format variable
US4458590A (en) * 1982-09-30 1984-07-10 Harris Graphics Corporation Printing press with plate cylinder skew and throw off
US5186103A (en) * 1992-06-12 1993-02-16 Man Roland Druckmaschinen Ag Printing machine system, especially for printing on a web of heavy or thick stock material, with interchangeable printing cylinders

Also Published As

Publication number Publication date
DE69305404T2 (de) 1997-05-15
FR2689448B1 (fr) 1994-06-24
US5272974A (en) 1993-12-28
FR2689448A1 (fr) 1993-10-08
EP0564372A1 (de) 1993-10-06
DE69305404D1 (de) 1996-11-21

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