US3452672A - Rotary offset printing press - Google Patents

Rotary offset printing press Download PDF

Info

Publication number
US3452672A
US3452672A US591626A US3452672DA US3452672A US 3452672 A US3452672 A US 3452672A US 591626 A US591626 A US 591626A US 3452672D A US3452672D A US 3452672DA US 3452672 A US3452672 A US 3452672A
Authority
US
United States
Prior art keywords
cylinder
impression
blanket cylinder
blanket
cylinders
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
US591626A
Other languages
English (en)
Inventor
Hans B Bolza-Schunemann
Albrecht Germann
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.)
Schnellpressenfabrik Koenig and Bauer AG
Original Assignee
Schnellpressenfabrik Koenig and Bauer AG
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 Schnellpressenfabrik Koenig and Bauer AG filed Critical Schnellpressenfabrik Koenig and Bauer AG
Application granted granted Critical
Publication of US3452672A publication Critical patent/US3452672A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B41F13/08—Cylinders
    • B41F13/24—Cylinder-tripping devices; Cylinder-impression adjustments
    • B41F13/26—Arrangement of cylinder bearings
    • B41F13/28—Bearings mounted eccentrically of the cylinder axis
    • 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
    • B41F7/025—Multicolour printing or perfecting on sheets or on one or more webs, in one printing unit

Definitions

  • the present invention relates to improvements in a rotary offset printing press, and it is an object of this invention to provide a mechanism for engaging the associated printing cylinders of such a machine with each other and disengaging them from each other and for changing-over the blanket cylinder of one of two offset units of such a machine from a common impression cylinder to the blanket cylinder of the other offset unit or vice versa so as to permit multicolor recto printing as well as perfecting work to be carried out alternately on the same machine.
  • the invention provides that for engaging and disengaging the associated cylinders or, to say it in other words, for moving them from the impression-on position to the impression-off position or vice versa, these cylinders are mounted on eccentric bushings which are adapted to be turned by means of toggle levers which are bent by suitable means to different angles relative to each other.
  • the invention provides that the crank arm of the toggle unit of the shiftable blanket cylinder is pivotable to either of two diametrically opposite positions relative to the axis of the crankshaft which rigidly connects this crank arm on one end of the blanket cylinder to the corresponding arm on the other end.
  • the eccentric bushings of the blanket cylinder will therefore be pivoted so as to engage the latter with the impression cylinder, while in the other position these bushings will be pivoted so as to shift the blanket cylinder into engagement with the other blanket cylinder.
  • the invention further provides an additional coupling device which is rotatably mounted on the mentioned crankshaft and connected to the driving means for operating the toggle unit and adapted to lock the crank arm in either of these positions to the mentioned driving means.
  • the adjustment of the blanket cylinder to either of these positions may be carried out independently of the actuation of the toggle unit by its driving means, and the blanket cylinder may therefore be moved in either of these positions to its impression-on or ofl? positions, that is, into or out of engagement with the common impression cylinder or with the other blanket cylinder.
  • This coupling device may be of a very simple and inexpensive construction and the operation of pivoting the crank arm from one position to the diametrically opposite position and thus the movement of the blanket cylinder from one to the other associated cylinder as well as the operation of locking and unlocking the coupling device in either of these positions may be carried out very easily either by hand or by mechanical, hydraulic or electric means.
  • the associated cylinders may, if desired, also be shifted to the impression-on or off positions so as to be either in positive engagement with each other or slightly spaced from each other.
  • FIGURE 1 shows a side view of the mechanism according to the invention in which the machine is adjusted for carrying out multicolor recto printing
  • FIGURE 2 shows a similar side view of the mechanism in which the machine is adjusted for carrying out perfecting work; while FIGURE 3 shows a cross section which is the line IIIIII of FIGURE 1.
  • FIG. 1 illustrate diagrammatically a five-cylinder printing mechanism of an offset machine for multicolor printing, which comprises a common impression cylinder 1 for the two blanket cylinders 2 and 3 of two offset units, each of which further comprises a plate cylinder 4, which is adapted to cooperate with the blanket cylinder 3, while the other plate cylinder which is not illustrated is adapted to cooperate with the blanket cylinder 2.
  • All of the cylinders are provided in a conventional manner at least at one end with gear teeth (not shown) so that, when pure recto printing is to be produced and the two blanket cylinders 2 and 3 are in the position as illustrated in FIGURE 1 and in engagement with the common impression cylinder 1 which is driven in the direction as indicated by its arrow, the teeth of cylinder 1 will mesh with the teeth of the two blanket cylinders 2 and 3 and drive the latter in the directions as indicated by their arrows, while the blanket cylinder 3, in turn, will drive the plate cylinder 4.
  • the impression cylinder 1 When carrying out perfecting work, the impression cylinder 1 therefore operates merely as a sheet-transfer cylinder without taken along any printing function and it feeds the sheet to the blanket cylinder 2 which picks up the sheet by means of grippers thereon (not shown) and passes it along the other blanket cylinder 3 to the printing position where it will be printed on both sides between the blanket cylinders 2 and 3.
  • each of these cylinders is provided with an eccentric bushing 5 or 6 which, in turn, is rotatably mounted on the shaft of the respective cylinder and adapted to be pivoted from one position to the other into or out of engagement with the associated cylinder by means of toggle-lever units.
  • the same toggle-lever unit which consists of the connecting arm 8 and the crank arm and serves for moving the blanket cylinder 3 from the impressionoff position to the impression-on position or vice versa also serves for shifting this cylinder 3 from its recto-printing position in engagement with the impression cylinder 1 to the perfecting-work position in engagement with the other blanket cylinder 2. This is accomplished according to the invention by providing an additional releasable coupling device 16 which connects the crank arm 10 to the driving means of this toggle-lever unit.
  • FIGURE 3 illustrates one of the two eccentric bushings 5 which are mounted on the outer ends of the blanket cylinder 3 and each of which has a flange which carries a pin 8 which is spaced at a radial distance 7 from the axis of rotation of bushing 5, as indicated by the dot-anddash line 7'.
  • This flange of bushing 5 has pivotably mounted thereon one end of the connecting arm 8 of the toggle-lever joint, the other end of which is mounted on a crank pin 9 on one side of a crank arm 10 which is pivotable back and forth and rigidly splined on a crankshaft 11 which transmits its movements to the corresponding crank arm 10 on the other side of the machine (not shown).
  • crank arm 10 is inserted into the bore of a flanged bushing 12 and rigidly connected thereto.
  • This bushing 12 is rotatably mounted in one side wall 27 of the machine and forms one member of a releasable coupling device.
  • crank arm 10 with respect to the crankshaft 11 forms a substantially semicircular segmental rack 13 which engages with a pinion 14 which is rotatably mounted on the side wall 27 of the machine and may when the machine is stopped be driven either by hand or by a motor for the purpose of turning the crank arm 10 to either of two diametrically opposite positions relative to the axis of crankshaft 11 and for thereby turning the bushings 5 of the blanket cylinder 3 so as to shift the latter from its position in engagement with one of the two cylinders 1 or 2 to the other.
  • the crankshaft 11 For moving the blanket cylinder 3 in either of its two positions relative to cylinders 1 and 2 from the impression-on position to the impression-off position or vice versa, that is, either into or out of engagement with the impression cylinder 1 or with the blanket cylinder 2, the crankshaft 11 carries a tubular shaft 15 which is freely rotatable thereon and extends from one side wall 27 of the machine to the other and has a swivel arm 16 rigidly splined on each end thereof.
  • This swivel arm 16 which forms another member of the coupling device and is operatively associated with the flange on bushing 10 has a bifurcated end 16a to which a connecting rod 17 of a suitable driving device is pivotably connected which may consist, for example, of a hydraulic cylinder-and-piston unit 18, as indicated in dashed lines in FIGURES 1 and 2.
  • This swivel arm 16 may be connected in different angular positions to the bushing 12 by means of an axially slidable coupling pin 19 which is for this purpose adapted to be inserted into one or another of two diametrically opposite bores 20 and 22 in the flange of bushing 12 or into an intermediate bore 21 in this flange.
  • Coupling pin 19 may be moved back and forth either by hand or automatically by mechanical, magnetic or hydraulic means.
  • the crank arm 10 remains locked by the coupling pin 19 to the swivel arm 16 on the tubular shaft 15.
  • Each of the swivel arms 16 which are secured to both ends of the tubular shaft 15 also serves as a crank arm for the toggle-lever unit for moving the plate cylinder 4 into or out of contact with the blanket cylinder 3 when the latter is shifted from its impression-on position to its impression-off position either in cooperation with cylinder 1 or cylinder 2.
  • Plate cylinder 4 is likewise slightly retracted in the same manner from the blanket cylinder 1 to theother blanket cylinder 2 or vice versa.
  • the bifurcated end 16a of each swivel arm 16 is for this purpose provided with a crank pin 23 on which one end of a connecting arm 24 is pivotably mounted, the other end of which is connected to the eccentric bushing 6 of plate cylinder 4.
  • Swivel arm 16 is made of such an effective length and the angle of traverse of the eccentric bushing 6 is made of such a size that, although when the plate cylinder 4 is moved to its impression-off position, its teeth will remain in mesh with those of the blanket cylinder 3, the peripheral surfaces of these two cylinders will then be disengaged from each other.
  • the eccentric bushing 6 is located in such a position that, when plate cylinder 4 is moved from its impression-on position to its impression-oft position, its axis of rotation will move substantially within the plane which intersects this axis with that of cylinder 3, so that only a small turn of bushing 6 will be required to effect a sufficient movement of plate cylinder 4 to disengage it from the blanket cylinder 3.
  • the intermediate bore 21 is disposed at an angle of relative to bores 20 and 22 and determines a neutral position of blanket cylinder 3 in which it is out of contact with both cylinders 1 and 2.
  • This neutral position of cylinder 3 may be used for insuring that, when this cylinder is shifted from cylinder 1 to cylinder 2 or vice versa, its teeth will properly engage with those of the cylinder to which cylinder 3 is shifted.
  • This neutral position of blanket cylinder 3 may further be used for washing and make ready the different cylinders and for the application of ink. Cylinders 3 and 4 may for any of these purposes be rotated either by hand or by auxiliary driving means.
  • the selective adjustment of blanket cylinder 3 from the position according to FIGURE 1 for pure recto printing to the position according to FIGURE 2 for perfecting work or vice versa may be carried out either by hand or by suitable driving means which permit the pinion 14 to be turned only when the coupling pin 19 is retracted.
  • Pinion 14 is then turned so as first to turn the crank arm 10 together with bushing 12 about an angle of 90 until the intermediate bore 21 is in alignment with the coupling pin 19.
  • the rotation of pinion 14 is then stopped and the coupling pin 19 is inserted either by hand or automatically into bore 21 so that the blanket cylinder 3 is locked in its neutral position.
  • cylinder 3 may then be slightly turned while its teeth remain in mesh with those of the plate cylinder 4 so that at the end of the subsequent movement of cylinder 3 toward the cylinder 1 or 2, its teeth will properly engage with those of the latter.
  • Coupling pin 19 is then again retracted and blanket cylinder 3 is further moved until it reaches either the other blanket cylinder 2, as shown in FIGURE 2, or the impression cylinder 1, as shown in FIGURE 1. Cylinder 3 is then locked in this position by the insertion of coupling pin 19 either into the bore 20 or the bore 22.
  • Cylinders 3 and 4 are moved to the impression-off position while the teeth of blanket cylinder 3 remain in mesh with those of the associate cylinders. If imperfectly printed sheets or stoppers occur, cylinders 3 and 4 may be moved to the off-position automatically by means of a photoelectric cell or the like or by hand by the actuation of a pushbutton. In any event, however, the coupling pin 19 then remains in its particular bore 20 or 22 in the flange of bushing 12.
  • the arms 8 and 10 of one toggle-lever unit and also the arms 16 and 24 of the other toggle-lever unit are in straight alignment with each other so that the longitudinal axes of the arms 8 and 24 are substantially in alignment with or intersect the axis of crankshaft 11.
  • No torque will therefore be exerted upon the toggle units when the cylinders 3 and 4 are in the impression-on position, and the hydraulic unit 18 may remain inactive during the printing operation, while it only needs to overcome frictional forces at the beginning of the movement of cylinders 3 and 4 to the impression-off position.
  • the connecting arm 8 is mounted on the crankpin 9 by means of an intermediate eccentric bushing 26 which may be turned on pin 9 so as to vary the elfective length of the connecting arm 8, while the connecting arm 24 is made of two parts which are connected by a screw connection for also varying its effective length.
  • a rotary offset printing press for multicolor printing having a common impression cylinder and two offset units each comprising a blanket cylinder and a plate cylinder adapted to engage upon and rotate with one of said blanket cylinders, at least one of said blanket cylinders having at least one eccentric bushing, and common means for pivoting said bushing so as to move at least a first of said blanket cylinders from the impression-on position to the impression-off position and vice versa and also for shifting said first blanket cylinder from a first position opposite to said impression cylinder to a second position opposite to the second blanket cylinder and vice versa
  • said common means comprising a shaft, rotatable about a fixed axis, a toggle-lever unit having a connecting arm pivotally connected at one end to said bushing and a crank arm secured to said shaft and pivotally connected to the other end of said connecting arm and adapted to be turned with said shaft about said axis to at least two different locking positions for moving said first blanket cylinder to said first and second positions, and a coupling device comprising
  • crank arm forms a segmental rack, and a pinion engaging with said rack and adapted to be rotated for rotating said crank arm from one of said locking positions to the other.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Presses (AREA)
US591626A 1965-11-11 1966-11-02 Rotary offset printing press Expired - Lifetime US3452672A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DESCH38011A DE1238929B (de) 1965-11-11 1965-11-11 Vorrichtung an Fuenfzylinder-Rotationsoffset-bogendruckmaschinen fuer wahlweisen einfarbigen Schoen- und Widerdruck oder zweifarbigen Schoendruck zum An- und Abstellen des einen Gummizylinders an den Druckzylinder oder den anderen Gummizylinder

Publications (1)

Publication Number Publication Date
US3452672A true US3452672A (en) 1969-07-01

Family

ID=7434531

Family Applications (1)

Application Number Title Priority Date Filing Date
US591626A Expired - Lifetime US3452672A (en) 1965-11-11 1966-11-02 Rotary offset printing press

Country Status (5)

Country Link
US (1) US3452672A (enExample)
DE (1) DE1238929B (enExample)
FR (1) FR1515028A (enExample)
GB (1) GB1158470A (enExample)
SE (1) SE304523B (enExample)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3785289A (en) * 1972-07-31 1974-01-15 Brown R Jr Copier-duplicator
US4183297A (en) * 1976-05-13 1980-01-15 Veb Polygraph Leipzig Kombinat Fur Polygraphische Maschinen Und Ausrustungen Rotary assembly for two-sided offset printing
US4217823A (en) * 1977-06-03 1980-08-19 Maschinenfabrik Augsburg-Nurnberg Aktiengesellschaft (M.A.N.) Drive arrangement for a changeable satellite printing mechanism
US4290361A (en) * 1980-01-11 1981-09-22 American Newspaper Publishers Association On the fly adjusting mechanism for rotary printing presses
US4369705A (en) * 1980-09-24 1983-01-25 Harris Corporation Printing press
US4526099A (en) * 1983-02-16 1985-07-02 Rockwell International Corporation Reversible color deck for rotary printing presses
US4603631A (en) * 1984-01-30 1986-08-05 M.A.N.-Roland Druckmaschinen Aktiengesellschaft Perfecting printing process and apparatus for a sheet-fed offset press
US4688925A (en) * 1985-12-06 1987-08-25 Eastman Kodak Company Electrographic reproduction apparatus capable of producing duplex copies
US5311817A (en) * 1991-05-15 1994-05-17 Komori Corporation Printing pressure adjusting apparatus of printing cylinders
US6827011B2 (en) * 2000-09-20 2004-12-07 Koenig & Bauer Aktiengesellschaft Printers comprising a drive assembly and a coupling

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55103959A (en) * 1979-02-02 1980-08-08 Tokyo Kikai Seisakusho:Kk Printing mode selector for printing drum of rotary press
JPS55158969A (en) * 1979-05-26 1980-12-10 Tokyo Kikai Seisakusho:Kk Multipurpose offset printing press
DE3614030A1 (de) * 1986-04-25 1987-10-29 Roland Man Druckmasch Druckwerk fuer eine rollenrotationsdruckmaschine
DE3614027A1 (de) * 1986-04-25 1987-10-29 Roland Man Druckmasch Stellvorrichtung fuer fuenfzylinder-druckwerke von offset-rotationsdruckmaschinen
DE4401301A1 (de) * 1994-01-18 1995-07-20 Roland Man Druckmasch Vorrichtung zur Druckeinstellung eines mit einer aufschiebbaren Hülse ausgestatteten Druckzylinders
DE10014040B4 (de) * 1999-11-23 2005-07-21 Koenig & Bauer Ag Welle zum Synchronisieren einer Stellbewegung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US952218A (en) * 1906-05-25 1910-03-15 Walter Scott Printing-machine.
US1108223A (en) * 1913-03-29 1914-08-25 Raymond Percival Payne Rotary lithographic-printing machine.
GB224843A (en) * 1924-04-14 1924-11-20 Linotype Machinery Ltd Improvements in rotary web offset printing machines
US3384011A (en) * 1965-03-17 1968-05-21 Koenig & Bauer Schnellpressfab Rotary sheet-fed offset printing press for perfecting work or recto printing

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE519733C (de) * 1929-09-21 1931-03-04 Vogtlaendische Maschinenfabrik An- und Abstellvorrichtung fuer mehrfarbige Rotationsdruckmaschinen, insbesondere mehrfarbige Rotationsgummidruckmaschinen
GB706997A (en) * 1950-06-30 1954-04-07 Maschf Augsburg Nuernberg Ag Arrangement for raising and lowering the impression cylinder of high-speed cylinder presses
US2874636A (en) * 1953-09-25 1959-02-24 Harris Intertype Corp Cylinder throwoff for rotary offset machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US952218A (en) * 1906-05-25 1910-03-15 Walter Scott Printing-machine.
US1108223A (en) * 1913-03-29 1914-08-25 Raymond Percival Payne Rotary lithographic-printing machine.
GB224843A (en) * 1924-04-14 1924-11-20 Linotype Machinery Ltd Improvements in rotary web offset printing machines
US3384011A (en) * 1965-03-17 1968-05-21 Koenig & Bauer Schnellpressfab Rotary sheet-fed offset printing press for perfecting work or recto printing

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3785289A (en) * 1972-07-31 1974-01-15 Brown R Jr Copier-duplicator
US4183297A (en) * 1976-05-13 1980-01-15 Veb Polygraph Leipzig Kombinat Fur Polygraphische Maschinen Und Ausrustungen Rotary assembly for two-sided offset printing
US4217823A (en) * 1977-06-03 1980-08-19 Maschinenfabrik Augsburg-Nurnberg Aktiengesellschaft (M.A.N.) Drive arrangement for a changeable satellite printing mechanism
US4290361A (en) * 1980-01-11 1981-09-22 American Newspaper Publishers Association On the fly adjusting mechanism for rotary printing presses
US4369705A (en) * 1980-09-24 1983-01-25 Harris Corporation Printing press
US4526099A (en) * 1983-02-16 1985-07-02 Rockwell International Corporation Reversible color deck for rotary printing presses
US4603631A (en) * 1984-01-30 1986-08-05 M.A.N.-Roland Druckmaschinen Aktiengesellschaft Perfecting printing process and apparatus for a sheet-fed offset press
US4688925A (en) * 1985-12-06 1987-08-25 Eastman Kodak Company Electrographic reproduction apparatus capable of producing duplex copies
US5311817A (en) * 1991-05-15 1994-05-17 Komori Corporation Printing pressure adjusting apparatus of printing cylinders
US6827011B2 (en) * 2000-09-20 2004-12-07 Koenig & Bauer Aktiengesellschaft Printers comprising a drive assembly and a coupling

Also Published As

Publication number Publication date
DE1238929B (de) 1967-04-20
SE304523B (enExample) 1968-09-30
FR1515028A (fr) 1968-03-01
GB1158470A (en) 1969-07-16

Similar Documents

Publication Publication Date Title
US3452672A (en) Rotary offset printing press
US4369705A (en) Printing press
US4833982A (en) Printing cylinder positioning system
US3329086A (en) Perfecting or multicolor offset printing press
EP0591792B1 (en) Cylinder throw apparatus
US3796154A (en) Sheet handling apparatus for a multi-color perfector press
US2874636A (en) Cylinder throwoff for rotary offset machine
GB2309668A (en) Printing unit for flying plate exchange
US5081927A (en) Rotary printing press with device for engaging or disengaging a rubber-covered cylinder with an impression cylinder and/or a plate cylinder
GB1559870A (en) Rotatable drum for printing presses
US4362098A (en) Rotary printing press using flexible plates
US5076164A (en) Sheet-fed rotary printing press with a plurality of printing units convertible from single-page printing to first form and perfector printing
JPH0751348B2 (ja) 巻取り紙輪転・オフセツト印刷機
JP2524289Y2 (ja) 印刷胴の印圧調整装置
US3724368A (en) Harmonic drive register adjustment device for a printing press
US3633503A (en) Drive and interrupter arrangement for rotary offset press
US4217823A (en) Drive arrangement for a changeable satellite printing mechanism
EP0311924B1 (de) Bogenrotationsdruckmachine, die von Schöndruck auf Schön- und Widerdruck umstellbar ist
US3358595A (en) Rotary printing press register clutch
US3641933A (en) Registry mechanism for printing units
US6546865B2 (en) Drive for a distributor roller in a printing machine
US4444106A (en) Arrangement for selectively connecting coaxial gear wheels of a gear train of a dual mode printing machine
JPH0339252A (ja) 周方向レジスタ装置
US3094067A (en) Cylinders for printing machines
US5421257A (en) Sheet transferring machine for printing machine