EP0381012A2 - Dispositif de retournement de feuille - Google Patents

Dispositif de retournement de feuille Download PDF

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Publication number
EP0381012A2
EP0381012A2 EP90101282A EP90101282A EP0381012A2 EP 0381012 A2 EP0381012 A2 EP 0381012A2 EP 90101282 A EP90101282 A EP 90101282A EP 90101282 A EP90101282 A EP 90101282A EP 0381012 A2 EP0381012 A2 EP 0381012A2
Authority
EP
European Patent Office
Prior art keywords
sheet
turning device
drum
printing
turning
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.)
Withdrawn
Application number
EP90101282A
Other languages
German (de)
English (en)
Other versions
EP0381012A3 (fr
Inventor
Erich Georg Wieland
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.)
Koenig and Bauer AG
Original Assignee
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 Koenig and Bauer AG filed Critical Koenig and Bauer AG
Publication of EP0381012A2 publication Critical patent/EP0381012A2/fr
Publication of EP0381012A3 publication Critical patent/EP0381012A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B41F21/106—Combinations of transfer drums and grippers for reversing sheets, e.g. for perfecting machine

Definitions

  • the invention relates to a sheet turning device for rotary printing presses according to the preamble of claim 1.
  • DE-OS 35 33 081 shows a sheet turning device for rotary printing presses, in which a transfer drum is designed as a reversing drum between two printing units arranged in series.
  • a storage drum is assigned to the transfer drum.
  • the transfer drum has grippers for both the straight printing and the reverse printing operation.
  • Double equipping the transfer drum with face printing and reversing grippers or with turning tongs reduces the performance of a rotary printing press in face printing.
  • Another disadvantage is the fact that when converting from perfecting to perfecting and reverse printing, all sheet-guiding cylinders arranged behind the turning drum must be adjusted to the sheet size length and turn, viewed in the sheet transport direction. The adjustment process is time-consuming and complicated. Expensive equipment is required in the main drive. Changes to the main drive train often lead to registration problems.
  • DE-OS 26 33 183 shows a sheet turning device which is arranged parallel to the straight sheet guide.
  • the sheet turning device consists of a storage drum assigned to a transfer cylinder and a turning system interacting with it.
  • the turning system is designed as a conveyor belt or an oscillating gripper.
  • the bow is turned using the Storage drum removed from the transfer cylinder and returned to the same transfer cylinder, turned by means of the turning device.
  • a disadvantage of the sheet turning device according to DE-OS 26 33 183 is that with heavy material or high speeds, slippage occurs between the sheet and the conveyor belt, which makes it impossible to pass the sheet in register.
  • the invention has for its object to provide a sheet turning device for a rotary printing press, in which the sheet turning is to take place parallel to the straight sheet guide.
  • the turning of the sheet is carried out by a reversible gripper drum known per se, which is arranged parallel to the straight sheet guide and can thus be decoupled from it, so that the straight printing operation is unaffected by turning effects.
  • a reversible gripper drum known per se, which is arranged parallel to the straight sheet guide and can thus be decoupled from it, so that the straight printing operation is unaffected by turning effects.
  • a format adjustment is provided in such a way that all sheet-guiding cylinders or drums downstream of the turning drum do not have to be uncoupled and rotated when the format is changed, so that complicated, lengthy adjustment work and devices for carrying them out are saved.
  • the printing units 1, 2 each consist of a forme cylinder 4 in a known manner; 6, a rubber cylinder 7; 8 and a pressure cylinder 9; 11.
  • the inking units on the forme cylinders 4, 6 are not shown.
  • the sheet transfer between the printing units 1, 2 takes place by means of a transfer drum 12 which interacts with the printing cylinders 9, 11.
  • the printing cylinders 9, 11 and sheet transfer drums 12, 13 which effect sheet transport in straight printing operation are rotatably mounted in side frames 14, 16 of the sheet-fed rotary printing press 3.
  • a sheet turning device 17 In parallel to the straight sheet guide, a sheet turning device 17 is provided, which consists of a storage drum 18 and a turning drum 19.
  • the storage drum 18 has two diametrically opposed gripper rows 21, 22, which interact with gripper rows 23, 24 of the transfer drum 12 in the reversing mode and are provided for holding a leading edge 26 of the sheet are.
  • two diametrically opposite holding devices 28, 29 are also provided, which in the exemplary embodiment are designed as suction devices, but can also consist of rows of grippers etc.
  • the holding devices 28, 29 for the trailing edge 27 of the sheet can be adjusted to the respective sheet formats F and cooperate with reversible grippers 31 of the reversing drum 19, which in turn cooperate with rows of grippers 32, 33 of the printing cylinder 11.
  • the storage drum 18 is between the side frames 14, 16 in a first bearing 34; 36 a rocker 37; 38 rotatably mounted.
  • the rockers 37, 38 are each supported by means of a second bearing point 39, 41 within the side frames 14, 16 on projections 42, 43 fixed to the frame, pivotable coaxially about an axis of rotation 44 of the transfer drum 12.
  • the turning drum 19 is also between the side frames 14, 16 in a first bearing 46; 47 a rocker 48, 49 rotatably mounted.
  • the rockers 48, 49 are each supported by means of a second bearing point 51, 52 on projections 53, 54 fixed to the frame, coaxially pivotable about an axis of rotation 56 of the printing cylinder 11.
  • a coupling 57; 58 provided, which in turn each have a first bearing 59; 61 for receiving the shaft journal of the storage drum 18 and a second bearing 62; 63 for receiving the shaft journals of the turning drum 19.
  • the cylinders 9, 11 and drums 12, 13 for the straight sheet guide are driven in a known manner by means of gears 64, 66 of a drive gear train on an outer side 67 of the side frame 14.
  • the drive for the sheet turning device is arranged on an inner side 68 of the side frame 16 and takes place via a double-wide gear wheel 71, which is rotatably mounted on a shaft journal 69 of the printing cylinder 11 and which is used for the counterpressure operation with the shaft journal 69 or the printing cylinder 11 and for the straight printing operation with the side frame 16 by means of a coupling element 15, for example Bolt can be coupled.
  • the gear 71 is in mesh with a gear 72 arranged in plane A.
  • the gear wheel 72 is rotatably mounted on a shaft journal 73 of the transfer drum 12.
  • the gear 71 is in a plane B in meshing engagement with a gear 74 which is rotatably connected to the turning drum 19.
  • the gear 74 is additionally in meshing engagement with a first gear 76 of the storage drum 18 on the plane B.
  • the gear 76 is seated in a rotationally fixed manner on a hollow shaft 77 which carries the holding devices 28, 29 of the storage drum 18.
  • gear 72 is also meshing with a second gear 78 of storage drum 18, which is also arranged on plane A.
  • the gear 78 is seated in a rotationally fixed manner on an inner shaft 79 which carries the rows of grippers 21, 22.
  • the inner shaft 79 or the gear 78 can be coupled to the hollow shaft 77 or the gear 76 by means of a hydraulic coupling, not shown.
  • the gear 71 with the Side frame 16 or the rocker 49 preferably coupled in a position of the storage drum 18 and turning drum 19 in which the sheet holding systems 31; 21, 22, 28, 29 not at a sheet transfer point to the sheet holding systems 32, 33; 23, 24 stand.
  • a sheet 25 can be guided past the shutdown turning device 17 that is decoupled in machine operation in the straight printing mode.
  • a device (not shown) is provided to swing the wings 37, 38; 48, 49 deflect and adjust relative to the side frames 14, 16.
  • the rockers 37, 38 are pivoted about the axis of rotation 44, and the couplers 48, 49 about the axis of rotation 56.
  • Fig. 1 shows the turning device 17 in a position for turning sheets with large formats F.
  • the position of the turning device 17 for turning sheets with small formats F is shown by a dash-dot line. An adjustment between these extreme positions can be made continuously.
  • a radians on the sheet transfer drum 12 between a tangent point 81 of transfer drum 12 and impression cylinder 11 and a tangent point 82 between transfer drum 12 and storage drum 18.
  • b radians on the printing cylinder 11 between the tangent point 81 and a tangent point 83 of the printing cylinder 11 and the turning drum 19, or radians on the storage drum 18 between the tangent point 82 and a tangent point 84 of the turning drum 19 and storage drum 18.
  • c radian measure on the turning drum 19 seen in the direction of rotation between tangent point 84 and tangent point 83.
  • e turning gripper offset, that is the distance on the turning drum 19, which the trailing edge 27 covers relative to the turning drum 19 when turning the sheet against the direction of rotation of the turning drum.
  • n natural number (1, 2, 3 );
  • D diameter of the turning drum 19.
  • F format length (variable).
  • the gripper opening curves (not shown) of the transfer drum 12 and the printing cylinder 11 are adjusted synchronously with the format adjustment by means of the rockers 37, 38, 48, 49.

Landscapes

  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Rotary Presses (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Registering Or Overturning Sheets (AREA)
EP19900101282 1989-02-02 1990-01-23 Dispositif de retournement de feuille Withdrawn EP0381012A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3903093 1989-02-02
DE19893903093 DE3903093A1 (de) 1989-02-02 1989-02-02 Bogenwendevorrichtung

Publications (2)

Publication Number Publication Date
EP0381012A2 true EP0381012A2 (fr) 1990-08-08
EP0381012A3 EP0381012A3 (fr) 1991-03-27

Family

ID=6373291

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900101282 Withdrawn EP0381012A3 (fr) 1989-02-02 1990-01-23 Dispositif de retournement de feuille

Country Status (4)

Country Link
EP (1) EP0381012A3 (fr)
JP (1) JPH02235637A (fr)
CS (1) CS29890A2 (fr)
DE (1) DE3903093A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997039896A1 (fr) * 1996-04-20 1997-10-30 Heidelberger Druckmaschinen Aktiengesellschaft Dispositif de renversement pour machine a imprimer, notamment machine a imprimer offset rotative a feuilles
US6089156A (en) * 1997-03-21 2000-07-18 Heidelberger Druckmaschinen Aktiengesellschaft Turning device for a printing press
EP1103375A3 (fr) * 1999-11-27 2002-04-10 Koenig & Bauer Aktiengesellschaft Machine à imprimer rotative à feuilles pour l'impression sélective sur une face ou à retiration
EP1225043A3 (fr) * 2001-01-18 2004-04-14 Heidelberger Druckmaschinen Aktiengesellschaft Dispositif pour retourner les feuilles planes dans les machines de traitement de feuilles demi-tour

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10158467B4 (de) * 2000-12-21 2014-05-15 Heidelberger Druckmaschinen Ag Druckmaschine und Verfahren zum Bedrucken eines Bogens
JP4106249B2 (ja) 2001-07-30 2008-06-25 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 シート加工機械においてシート形の材料を裏返す装置
DE102008004811B4 (de) * 2007-02-14 2017-02-23 Heidelberger Druckmaschinen Ag Vorrichtung zum Fördern eines Bogens zwischen zwei Druckwerken einer Druckmaschine in Reihenbauweise

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3884146A (en) * 1972-01-20 1975-05-20 Harris Intertype Corp Printing press with sheet turnover mechanism
IT1040008B (it) * 1975-07-24 1979-12-20 Cigardi Omc Sa Sistema e dispositivo per il rove sciamento sequenziale dei fogli su machine da stampa offset da foglio a piu colori
DE2535113C2 (de) * 1975-08-06 1982-06-03 Western Gear Corp., Pittsburgh, Pa. Bogenübergabetrommel einer Bogen-Rotationsdruckmaschine
DE3533081A1 (de) * 1985-09-17 1987-03-26 Roland Man Druckmasch Bogenwendevorrichtung fuer rotationsdruckmaschinen
DE3535694A1 (de) * 1985-10-05 1987-04-09 Roland Man Druckmasch Bogenoffsetrotationsdruckmaschine in reihenbauweise

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997039896A1 (fr) * 1996-04-20 1997-10-30 Heidelberger Druckmaschinen Aktiengesellschaft Dispositif de renversement pour machine a imprimer, notamment machine a imprimer offset rotative a feuilles
US6089156A (en) * 1997-03-21 2000-07-18 Heidelberger Druckmaschinen Aktiengesellschaft Turning device for a printing press
EP1103375A3 (fr) * 1999-11-27 2002-04-10 Koenig & Bauer Aktiengesellschaft Machine à imprimer rotative à feuilles pour l'impression sélective sur une face ou à retiration
DE19957230B4 (de) * 1999-11-27 2005-08-18 Koenig & Bauer Ag Bogenrotationsdruckmaschine für den wahlweisen Schöndruck oder Schön- und Widerdruck
EP1225043A3 (fr) * 2001-01-18 2004-04-14 Heidelberger Druckmaschinen Aktiengesellschaft Dispositif pour retourner les feuilles planes dans les machines de traitement de feuilles demi-tour

Also Published As

Publication number Publication date
DE3903093A1 (de) 1990-08-09
JPH02235637A (ja) 1990-09-18
EP0381012A3 (fr) 1991-03-27
CS29890A2 (en) 1991-05-14

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