EP0803354A2 - Cylindre d'une presse rotative avec un diamètre extérieur modifiable - Google Patents

Cylindre d'une presse rotative avec un diamètre extérieur modifiable Download PDF

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Publication number
EP0803354A2
EP0803354A2 EP97103615A EP97103615A EP0803354A2 EP 0803354 A2 EP0803354 A2 EP 0803354A2 EP 97103615 A EP97103615 A EP 97103615A EP 97103615 A EP97103615 A EP 97103615A EP 0803354 A2 EP0803354 A2 EP 0803354A2
Authority
EP
European Patent Office
Prior art keywords
cylinder
cylinder jacket
jacket
cylinder according
symmetry
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP97103615A
Other languages
German (de)
English (en)
Other versions
EP0803354B1 (fr
EP0803354A3 (fr
Inventor
Rudi Haupenthal
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.)
Heidelberger Druckmaschinen AG
Original Assignee
Heidelberger Druckmaschinen 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 Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP0803354A2 publication Critical patent/EP0803354A2/fr
Publication of EP0803354A3 publication Critical patent/EP0803354A3/fr
Application granted granted Critical
Publication of EP0803354B1 publication Critical patent/EP0803354B1/fr
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
    • B41F13/08—Cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F21/00—Devices for conveying sheets through printing apparatus or machines
    • B41F21/10—Combinations of transfer drums and grippers

Definitions

  • the invention relates to a cylinder, in particular sheet guiding cylinder, of a rotary printing press, the outer diameter of which can be changed by means of an adjusting device on account of an elastically deformable, partially circular cylinder jacket.
  • the diameter can be adjusted to the substrate thickness.
  • the known construction has the disadvantage that the cylinder jacket consisting of relatively thin material (for example chrome foil) is only supported locally and in this respect has a polygonal contour. Furthermore, the chrome foil and the associated support plate are dented and damaged in the event of a point load. This can be done with a crumpled sheet, for example.
  • the known design has no roundness in the area of the clamping point.
  • the invention is therefore based on the object of specifying a cylinder of the type mentioned at the outset which is of improved design compared to the disadvantages mentioned above.
  • the adjusting device has an actuator which is radially displaceable relative to an inner cylinder body and is mounted on the latter and which also displaces the essentially inherently rigid cylinder jacket in the same radial direction and that a path derived from the radial displacement adjusts the adjusting path for a force deflecting device belonging to the adjusting device forms, which preferably acts on the end regions of the cylinder jacket for its deformation.
  • the configuration according to the invention creates a cylinder jacket which has essentially its own rigidity, that is to say that it has the roughly part-circular contour without being generated by the supporting measures.
  • the inherent rigidity is designed such that there is sufficient dimensional stability, but a corresponding elasticity remains for a diameter adjustment.
  • This cylinder jacket interacts with an actuator that is radially displaceable relative to an inner cylinder body.
  • the frame part is mounted on the cylinder body so as to be adjustable in the radial direction.
  • a displacement of the control element leads to the cylinder jacket with its area which the control element engages being displaced in the same direction, that is to say in the same radial direction.
  • This radial displacement results in an increase or decrease in diameter for a region of the cylinder jacket, depending on the direction, but the other regions of the cylinder jacket must also be displaced in order to optimize the diameter adjustment.
  • the cylinder jacket is attached to the control element.
  • the cross-sectional contour of the cylinder jacket is preferably symmetrical with respect to a radially running plane of symmetry.
  • the cylinder jacket is preferably attached to the actuating part in the region of this plane of symmetry, so that the region of the cylinder jacket assigned to the plane of symmetry is displaced radially by means of the actuating part when the adjusting device is actuated.
  • the diameter is adjusted in the remaining areas of the cylinder jacket which are symmetrically spaced from the plane of symmetry by the elastic deformation thereof by means of the force deflection device.
  • the cylinder body has a circular cylindrical cross section.
  • it can form the shaft of the cylinder.
  • the actuating part is preferably mounted on the cylinder body by means of sliding blocks which are supported on the latter, whereby the rectilinear radial movement is made possible.
  • the word "in each case” mentioned in the preceding sentence indicates that — viewed over the longitudinal extent of the cylinder — several assemblies of the adjusting device are provided, so that the entire cylinder surface area can be adjusted uniformly.
  • assemblies are provided in the end regions of the cylinder.
  • the force deflection device has double levers which are pivotably mounted on the actuating part and each act on the cylinder jacket with their first lever arm with the cylinder body and with their other, second lever arm. If the actuating part is displaced radially relative to the cylinder body, the double levers pivot due to the support of their first lever arms on the cylinder body. Due to the pivoting movements of the double levers, their second lever arms act on the cylinder jacket, namely on the inside of the cylinder jacket, so that this causes an elastic deformation.
  • the application can take place by means of forces and / or torques, depending on which curve shape the outer contour of the cylinder is to receive.
  • the aim is usually a part-circular contour that best approximates a mathematical part-circle.
  • the double lever can preferably be designed as an angle lever, that is, the two lever arms of each double lever enclose an angle.
  • the cross section of the cylinder jacket is tapered in the direction of its end regions.
  • FIG. 1 shows a schematic side view of a rotary printing press 1 which has two printing units 2, 3.
  • the printing units have a multiplicity of cylinders which have different tasks, at least some of the cylinders forming sheet guide drums which transport the sheets to be printed.
  • the outer diameter of certain cylinders can be changed in order to adapt to paper of different thicknesses.
  • FIG. 2 shows the principle of a cylinder which is adjustable in the outer diameter.
  • the axis of rotation of such a cylinder 5 is identified by 4. It has a cylinder jacket 6, which is part-circular. There is a symmetry of the contour of the cylinder jacket 6 in relation to a plane of symmetry 7, which runs through the axis of rotation 4.
  • a plane of symmetry 8 runs at right angles to the plane of symmetry 7 and also runs through the axis of rotation 4.
  • the cylinder jacket 6 can be displaced in the radial direction along the plane of symmetry 7 (radial displacement R '), so that the dashed line sets the registered position of the cylinder jacket 6.
  • this position is only present mentally, since with the radial displacement an expansion of the cylinder jacket 6 takes place at the same time, that is, it is elastically deformed. According to a first exemplary embodiment of the invention, this can be done by means of a force F which acts in the end regions 10 of the cylinder jacket 6.
  • FIG. 3 shows an embodiment according to the principle of operation of Figure 2.
  • the cylinder 5 has an inner cylinder body 11 which is rotatably mounted in the rotary printing press by means of bearings, not shown.
  • the cylinder body 11 has a circular cross section.
  • An actuating part 12 is designed in the form of an adjusting ring 13 which has an inner bore 14 which has a larger diameter than the cylinder body 11.
  • two sliding blocks 15 are arranged, which are located on both sides of the plane of symmetry 7 and can be adjusted radially by means of threaded screws 16 in their distance from one another.
  • the front end faces 17 of the two sliding blocks 15 receive the cylinder body 11 between them with little play, the central axes of the sliding blocks 15 and the threaded screws 16 lying in the plane of symmetry 8.
  • the adjusting ring 13 is radially displaceably mounted on the cylinder body 11, namely a radial displacement in the direction of the plane of symmetry 7 and perpendicular to the axis of rotation 4 is possible.
  • the radial displacement of the adjusting ring 13 relative to the cylinder body 11 is possible by means of an adjusting device 18 which has a threaded spindle 19 which is screwed into a threaded bore 20 of the cylinder body 11.
  • the threaded spindle 19 and the threaded bore 20 lie in the plane of symmetry 7 and run at a right angle to the axis of rotation 4.
  • the threaded spindle 19 passes through a radial bore 21 of the adjusting ring 13 and has an adjusting knob 23 provided at the end with a scale 22.
  • the adjusting knob 23 has a larger diameter than the radial bore, so that it can be supported on a support surface 24 of the adjusting ring 13.
  • a slide ring 25 is pinned to the threaded spindle 19 and, with little play, lies opposite a support surface 26 of a recess 27, the recess 27 being designed as an open-ended recess starting from the inner bore 14. In this way, by turning the adjusting knob 23, the relative position between the adjusting ring 13 and the cylinder body 11 can be adjusted in the radial direction.
  • the set value can be read from the scale 22 by means of a pointer 28.
  • a gripper support bar 29 and a gripper system 30 are fastened to the cylinder body 11.
  • the cylinder jacket 6 of the cylinder 5 is part-circular, that is, between its ends 31 there is a gap extending over a circumferential angle, in which the adjusting head 23 and the gripper support bar 29 and the gripper system 30 are located.
  • the cylinder jacket 6 is fastened to the adjusting ring 13 by means of fastening screws 32.
  • the cylinder jacket 6 has a support surface 33 which is clamped to the periphery 34 of the adjusting ring 13 by means of the fastening screws 32.
  • a force deflection device 35 is arranged on the adjusting ring 13.
  • Each angle lever 37 has a first lever arm 38, the crowned end region 39 of which cooperates with the lateral surface of the cylinder body 11, that is to say is supported there.
  • the second lever arm 40 which extends at an angle between 0 ° and 180 °, preferably 90 ° to the first lever arm 38, has a roller 42 in the end region 41, which is located on the inner surface 43 of the cylinder jacket 6 in each case in the end region 44 of the cylinder jacket 6 supports.
  • the respective angle lever 37 is pivotally mounted on the adjusting ring 13 in its knee area by means of a bolt 45, this bearing point preferably being above the plane of symmetry 8, that is to say on the side of the adjusting ring 13 having the adjusting device 18.
  • the cylinder jacket 6 is provided with its greatest wall thickness. Starting from the support surface 33, the wall thickness decreases symmetrically to the plane of symmetry 7 in the direction of the ends 31, the outer surface 46 of the cylinder shell having a partial circular shape and the inner surface 43 taking such a course that the cross-sectional taper towards the ends 31 there results.
  • the cylinder jacket 6 is made with the smallest radius, that is, in order to bring about a larger diameter of the cylinder jacket 6, it must be widened by means of an adjusting device 47.
  • This adjusting device 47 includes, among other things, the adjusting device 18, the adjusting part 12 and the force deflection device 35. In the same way, it is possible for the cylinder jacket 6 to be manufactured with the largest radius, the cylinder jacket being contracted by a corresponding adjusting device (not shown) in order to set a smaller diameter.
  • the diameter or the radius r of the cylinder 5 is to be increased, for example to be set to the largest radius R, in order to adapt to the printing material thickness, this is done by turning the adjusting knob 23. While the smallest diameter of the cylinder 5 is shown in FIG 4, the largest possible diameter of this cylinder results.
  • the threaded spindle 19 is screwed deeper into the threaded bore 20, as a result of which the adjusting ring 13 is displaced relative to the cylinder body 11 in a radial way, namely in the plane of symmetry 7.
  • the two angle levers 37 pivot about their bolts 45, since they are supported with their end regions 39 on the lateral surface of the cylinder body 11 and their bearing points (bolts 45) move downward through the aforementioned displacement movement, so that the left side of the plane of symmetry 7 located angle lever 37 a pivoting movement counterclockwise and the right side of the plane of symmetry 7 located lever 37 a pivoting movement in Clockwise direction. Due to the symmetrical relationships, both pivot angles of the angle lever 37 are the same size.
  • the rollers 42 push the respective end regions 44 of the cylinder jacket 6 outwards, an elastic deformation occurring due to the choice of the cross-sectional configuration of the cylinder jacket, the materials selected and so on, such that the outer jacket surface 46 of the cylinder jacket 6 continues to be as possible as possible Has the shape of a pitch circle. It is possible to keep the deviation from a mathematical pitch circle within very narrow limits. For example, a diameter difference of und 0.04 and a roundness of 0.07 to 0.1 can be realized in the area around the outermost point 48.
  • a linear adjustment is preferably implemented, that is to say, in the case of a radial offset along the plane of symmetry 7 by a specific path, there is a corresponding widening of the diameter, the radial adjustment path and the widening of diameter having a constant ratio over the entire adjustment range.
  • the adjusting knob 23 is turned in the opposite direction, whereby the slide ring 25, according to the position shown in FIG. 4, raises the adjusting ring 13 relative to the cylinder body 11. On the one hand, this leads to an "upward migration" of the outermost point 48 and to corresponding pivoting movements of the two angle levers 37.
  • FIG. 5 shows a side view of the embodiment according to FIGS. 3 and 4, it being clear that the adjusting device 47 is located at the front end of the cylinder 5.
  • 5 also shows a center line 49 of the cylinder 5, the center line 49 also forming the center line of the rotary printing press.
  • FIG. 6 shows, in a schematic representation, a further exemplary embodiment of the invention, only the differences from the exemplary embodiment of the preceding figures being explained for the sake of simplicity.
  • the cylinder body 11 has a relatively large diameter, it is almost as large as the outer diameter of the adjusting ring 13.
  • the two parts are arranged one behind the other — viewed in the longitudinal direction of the axis of rotation 4.
  • the adjusting ring 13 has an open-edge recess 50 in each of the two upper quadrants of the arrangement formed by the planes of symmetry 7 and 8, a control groove 51 of the adjusting ring 13 opening into the open-edge recess 50.
  • a toggle lever 53 is pivotably mounted on the cylinder body 11 by means of a bolt 52, which carries in its one end region 54 a roller 55 which engages in the control groove 51 and in its other end region 56 has a spherical contact surface 57 which is located on a projection 58 of the cylinder jacket 6 supports.
  • the projection 58 starts from the inner lateral surface 43 of the cylinder jacket 6 and extends in the radial direction.
  • the angle lever 53 is pivoted about the bolt 52 by the engagement of the roller 55 in the control groove 51, so that the end region 56 adjusts to the approximately radially extending outer surface of the projection 58 acts in such a way that, in accordance with the illustration in FIG. 2-, a moment M is transmitted, that is to say in FIGS. 3 and 4, forces were exerted on the cylinder jacket 6 and in the exemplary embodiment in FIG. 6 there is none Application of force, but a moment, which leads to a different bending line of the cylinder jacket 6.
  • all necessary surfaces of the cylinder 5 can be produced by, for example, attaching chrome foil, super blue, glass bead cloth and so on to the cylinder jacket 6 with appropriate clamping and tensioning devices.
  • the invention also makes it possible to create cylinder surfaces that deviate from the ideal circular shape, for example spherical cylinder surfaces. This is possible in that further adjusting mechanisms are provided in the axial direction of the cylinder 5, that is to say not only in the end regions. A plurality of adjusting devices can preferably be coupled to one another by means of suitable gears, so that all adjusting mechanisms are set automatically at the same time.
  • stiffening ribs can be arranged on the inner jacket surface 43.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
EP97103615A 1996-04-27 1997-03-05 Cylindre d'une presse rotative avec un diamètre extérieur modifiable Expired - Lifetime EP0803354B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19617021A DE19617021A1 (de) 1996-04-27 1996-04-27 Zylinder einer Rotationsdruckmaschine mit veränderbarem Außendurchmesser
DE19617021 1996-04-27

Publications (3)

Publication Number Publication Date
EP0803354A2 true EP0803354A2 (fr) 1997-10-29
EP0803354A3 EP0803354A3 (fr) 1998-01-07
EP0803354B1 EP0803354B1 (fr) 1999-06-02

Family

ID=7792729

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97103615A Expired - Lifetime EP0803354B1 (fr) 1996-04-27 1997-03-05 Cylindre d'une presse rotative avec un diamètre extérieur modifiable

Country Status (5)

Country Link
US (1) US5862755A (fr)
EP (1) EP0803354B1 (fr)
JP (1) JPH1034883A (fr)
CZ (1) CZ291414B6 (fr)
DE (2) DE19617021A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10120952A1 (de) * 2000-05-17 2001-11-22 Heidelberger Druckmasch Ag An- und abstellbare Leitelemente für das Auswechseln eines Druckträgers
DE10324677B4 (de) * 2002-06-26 2017-02-16 Heidelberger Druckmaschinen Ag Zylinder einer Bedruckstoff verarbeitenden Maschine mit einer Einrichtung zur Einstellung eines Durchmessers des Zylinders
DE10355045B4 (de) * 2002-12-20 2018-09-06 Heidelberger Druckmaschinen Ag Verfahren zur Variation eines Trommelprofils einer Vario-Trommel und Vario-Trommel zur Durchführung des Verfahrens
JP2008142905A (ja) * 2006-12-06 2008-06-26 Shinohara Machinery Co Ltd 枚葉印刷機の爪座機構
JP2008114592A (ja) * 2006-11-06 2008-05-22 Heidelberger Druckmas Ag 枚葉紙をフィードするための渡し胴
DE102009019020B4 (de) * 2008-05-23 2021-05-20 Heidelberger Druckmaschinen Ag Vorrichtung zum Wenden eines Bogen während des Förderns durch eine Druckmaschine
JP6018221B2 (ja) 2012-11-27 2016-11-02 リケンテクノス株式会社 化粧フィルム

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH499388A (fr) * 1968-03-01 1970-11-30 Miller Printing Machinery Co Cylindre de transfert de feuilles de presse à imprimer
GB1230314A (fr) * 1969-10-23 1971-04-28
GB2166388A (en) * 1984-09-28 1986-05-08 Rotaprint Plc Expandable work cylinder
EP0185965B1 (fr) * 1984-12-28 1989-03-15 Heidelberger Druckmaschinen Aktiengesellschaft Cylindre de transfert pour machine à imprimer des feuilles
DE4434828C1 (de) * 1994-09-29 1995-11-16 Roland Man Druckmasch Bogenführungstrommel mit verstellbarem Außendurchmesser

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2558689A (en) * 1948-03-05 1951-06-26 Murray D J Mfg Co Variable diameter winder shaft
US3602140A (en) * 1970-02-09 1971-08-31 Ralph E Sudduth Rotary antismut device having radially adjustable sheet-supporting wheels
US3654861A (en) * 1970-04-06 1972-04-11 Planeta Veb Druckmasch Werke Sheet carrier cylinder for use in a polychrome rotary printing press adapted for both one-side and two-side printing
DE2824733C2 (de) * 1978-06-06 1984-03-15 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Umführtrommel für Schön- und Widerdruckmaschinen
DE3902923C2 (de) * 1988-03-16 1994-06-01 Heidelberger Druckmasch Ag Bogenführungstrommel für Bogenrotationsdruckmaschinen
DE4315513C2 (de) * 1993-05-10 2001-11-08 Heidelberger Druckmasch Ag Einrichtung zur Formatanpassung einer Bogenübergabetrommel
JP3629321B2 (ja) * 1994-12-20 2005-03-16 ハイデルベルガー ドルツクマシーネン アクチエンゲゼルシヤフト 多色刷り枚葉紙輪転印刷機の枚葉紙引渡し胴

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH499388A (fr) * 1968-03-01 1970-11-30 Miller Printing Machinery Co Cylindre de transfert de feuilles de presse à imprimer
GB1230314A (fr) * 1969-10-23 1971-04-28
GB2166388A (en) * 1984-09-28 1986-05-08 Rotaprint Plc Expandable work cylinder
EP0185965B1 (fr) * 1984-12-28 1989-03-15 Heidelberger Druckmaschinen Aktiengesellschaft Cylindre de transfert pour machine à imprimer des feuilles
DE4434828C1 (de) * 1994-09-29 1995-11-16 Roland Man Druckmasch Bogenführungstrommel mit verstellbarem Außendurchmesser

Also Published As

Publication number Publication date
EP0803354B1 (fr) 1999-06-02
EP0803354A3 (fr) 1998-01-07
US5862755A (en) 1999-01-26
JPH1034883A (ja) 1998-02-10
CZ64997A3 (en) 1997-11-12
DE59700181D1 (de) 1999-07-08
CZ291414B6 (cs) 2003-03-12
DE19617021A1 (de) 1997-11-06

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